/build/source/clang/lib/AST/ASTContext.cpp

Bug Summary

File:	build/source/clang/lib/AST/ASTContext.cpp
Warning:	line 4089, column 3 Called C++ object pointer is null
Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name ASTContext.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/source/build-llvm -resource-dir /usr/lib/llvm-17/lib/clang/17 -I tools/clang/lib/AST -I /build/source/clang/lib/AST -I /build/source/clang/include -I tools/clang/include -I include -I /build/source/llvm/include -D _DEBUG -D _GLIBCXX_ASSERTIONS -D _GNU_SOURCE -D _LIBCPP_ENABLE_ASSERTIONS -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-17/lib/clang/17/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/source/build-llvm=build-llvm -fmacro-prefix-map=/build/source/= -fcoverage-prefix-map=/build/source/build-llvm=build-llvm -fcoverage-prefix-map=/build/source/= -O3 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -Wno-misleading-indentation -std=c++17 -fdeprecated-macro -fdebug-compilation-dir=/build/source/build-llvm -fdebug-prefix-map=/build/source/build-llvm=build-llvm -fdebug-prefix-map=/build/source/= -fdebug-prefix-map=/build/source/build-llvm=build-llvm -fdebug-prefix-map=/build/source/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2023-05-10-133810-16478-1 -x c++ /build/source/clang/lib/AST/ASTContext.cpp
1//===- ASTContext.cpp - Context to hold long-lived AST nodes --------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9//  This file implements the ASTContext interface.
10//
11//===----------------------------------------------------------------------===//

13#include "clang/AST/ASTContext.h"
14#include "CXXABI.h"
15#include "Interp/Context.h"
16#include "clang/AST/APValue.h"
17#include "clang/AST/ASTConcept.h"
18#include "clang/AST/ASTMutationListener.h"
19#include "clang/AST/ASTTypeTraits.h"
20#include "clang/AST/Attr.h"
21#include "clang/AST/AttrIterator.h"
22#include "clang/AST/CharUnits.h"
23#include "clang/AST/Comment.h"
24#include "clang/AST/Decl.h"
25#include "clang/AST/DeclBase.h"
26#include "clang/AST/DeclCXX.h"
27#include "clang/AST/DeclContextInternals.h"
28#include "clang/AST/DeclObjC.h"
29#include "clang/AST/DeclOpenMP.h"
30#include "clang/AST/DeclTemplate.h"
31#include "clang/AST/DeclarationName.h"
32#include "clang/AST/DependenceFlags.h"
33#include "clang/AST/Expr.h"
34#include "clang/AST/ExprCXX.h"
35#include "clang/AST/ExprConcepts.h"
36#include "clang/AST/ExternalASTSource.h"
37#include "clang/AST/Mangle.h"
38#include "clang/AST/MangleNumberingContext.h"
39#include "clang/AST/NestedNameSpecifier.h"
40#include "clang/AST/ParentMapContext.h"
41#include "clang/AST/RawCommentList.h"
42#include "clang/AST/RecordLayout.h"
43#include "clang/AST/Stmt.h"
44#include "clang/AST/TemplateBase.h"
45#include "clang/AST/TemplateName.h"
46#include "clang/AST/Type.h"
47#include "clang/AST/TypeLoc.h"
48#include "clang/AST/UnresolvedSet.h"
49#include "clang/AST/VTableBuilder.h"
50#include "clang/Basic/AddressSpaces.h"
51#include "clang/Basic/Builtins.h"
52#include "clang/Basic/CommentOptions.h"
53#include "clang/Basic/ExceptionSpecificationType.h"
54#include "clang/Basic/IdentifierTable.h"
55#include "clang/Basic/LLVM.h"
56#include "clang/Basic/LangOptions.h"
57#include "clang/Basic/Linkage.h"
58#include "clang/Basic/Module.h"
59#include "clang/Basic/NoSanitizeList.h"
60#include "clang/Basic/ObjCRuntime.h"
61#include "clang/Basic/SourceLocation.h"
62#include "clang/Basic/SourceManager.h"
63#include "clang/Basic/Specifiers.h"
64#include "clang/Basic/TargetCXXABI.h"
65#include "clang/Basic/TargetInfo.h"
66#include "clang/Basic/XRayLists.h"
67#include "llvm/ADT/APFixedPoint.h"
68#include "llvm/ADT/APInt.h"
69#include "llvm/ADT/APSInt.h"
70#include "llvm/ADT/ArrayRef.h"
71#include "llvm/ADT/DenseMap.h"
72#include "llvm/ADT/DenseSet.h"
73#include "llvm/ADT/FoldingSet.h"
74#include "llvm/ADT/PointerUnion.h"
75#include "llvm/ADT/STLExtras.h"
76#include "llvm/ADT/SmallPtrSet.h"
77#include "llvm/ADT/SmallVector.h"
78#include "llvm/ADT/StringExtras.h"
79#include "llvm/ADT/StringRef.h"
80#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
81#include "llvm/Support/Capacity.h"
82#include "llvm/Support/Casting.h"
83#include "llvm/Support/Compiler.h"
84#include "llvm/Support/ErrorHandling.h"
85#include "llvm/Support/MD5.h"
86#include "llvm/Support/MathExtras.h"
87#include "llvm/Support/raw_ostream.h"
88#include "llvm/TargetParser/RISCVTargetParser.h"
89#include "llvm/TargetParser/Triple.h"
90#include <algorithm>
91#include <cassert>
92#include <cstddef>
93#include <cstdint>
94#include <cstdlib>
95#include <map>
96#include <memory>
97#include <optional>
98#include <string>
99#include <tuple>
100#include <utility>

102using namespace clang;

104enum FloatingRank {
BFloat16Rank,
Float16Rank,
HalfRank,
FloatRank,
DoubleRank,
LongDoubleRank,
Float128Rank,
Ibm128Rank
113};

115/// \returns location that is relevant when searching for Doc comments related
116/// to \p D.
117static SourceLocation getDeclLocForCommentSearch(const Decl *D,
                                               SourceManager &SourceMgr) {
assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "clang/lib/AST/ASTContext.cpp", 119, __extension__ __PRETTY_FUNCTION__
));

// User can not attach documentation to implicit declarations.
if (D->isImplicit())
  return {};

// User can not attach documentation to implicit instantiations.
if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
  if (FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
    return {};
}

if (const auto *VD = dyn_cast<VarDecl>(D)) {
  if (VD->isStaticDataMember() &&
      VD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
    return {};
}

if (const auto *CRD = dyn_cast<CXXRecordDecl>(D)) {
  if (CRD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
    return {};
}

if (const auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
  TemplateSpecializationKind TSK = CTSD->getSpecializationKind();
  if (TSK == TSK_ImplicitInstantiation ||
      TSK == TSK_Undeclared)
    return {};
}

if (const auto *ED = dyn_cast<EnumDecl>(D)) {
  if (ED->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
    return {};
}
if (const auto *TD = dyn_cast<TagDecl>(D)) {
  // When tag declaration (but not definition!) is part of the
  // decl-specifier-seq of some other declaration, it doesn't get comment
  if (TD->isEmbeddedInDeclarator() && !TD->isCompleteDefinition())
    return {};
}
// TODO: handle comments for function parameters properly.
if (isa<ParmVarDecl>(D))
  return {};

// TODO: we could look up template parameter documentation in the template
// documentation.
if (isa<TemplateTypeParmDecl>(D) ||
    isa<NonTypeTemplateParmDecl>(D) ||
    isa<TemplateTemplateParmDecl>(D))
  return {};

// Find declaration location.
// For Objective-C declarations we generally don't expect to have multiple
// declarators, thus use declaration starting location as the "declaration
// location".
// For all other declarations multiple declarators are used quite frequently,
// so we use the location of the identifier as the "declaration location".
if (isa<ObjCMethodDecl>(D) || isa<ObjCContainerDecl>(D) ||
    isa<ObjCPropertyDecl>(D) ||
    isa<RedeclarableTemplateDecl>(D) ||
    isa<ClassTemplateSpecializationDecl>(D) ||
    // Allow association with Y across {} in `typedef struct X {} Y`.
    isa<TypedefDecl>(D))
  return D->getBeginLoc();

const SourceLocation DeclLoc = D->getLocation();
if (DeclLoc.isMacroID()) {
  // There are (at least) three types of macros we care about here.
  //
  // 1. Macros that are used in the definition of a type outside the macro,
  //    with a comment attached at the macro call site.
  //    ```
  //    #define MAKE_NAME(Foo) Name##Foo
  //
  //    /// Comment is here, where we use the macro.
  //    struct MAKE_NAME(Foo) {
  //        int a;
  //        int b;
  //    };
  //    ```
  // 2. Macros that define whole things along with the comment.
  //    ```
  //    #define MAKE_METHOD(name) \
  //      /** Comment is here, inside the macro. */ \
  //      void name() {}
  //
  //    struct S {
  //      MAKE_METHOD(f)
  //    }
  //    ```
  // 3. Macros that both declare a type and name a decl outside the macro.
  //    ```
  //    /// Comment is here, where we use the macro.
  //    typedef NS_ENUM(NSInteger, Size) {
  //        SizeWidth,
  //        SizeHeight
  //    };
  //    ```
  //    In this case NS_ENUM declares am enum type, and uses the same name for
  //    the typedef declaration that appears outside the macro. The comment
  //    here should be applied to both declarations inside and outside the
  //    macro.
  //
  // We have found a Decl name that comes from inside a macro, but
  // Decl::getLocation() returns the place where the macro is being called.
  // If the declaration (and not just the name) resides inside the macro,
  // then we want to map Decl::getLocation() into the macro to where the
  // declaration and its attached comment (if any) were written.
  //
  // This mapping into the macro is done by mapping the location to its
  // spelling location, however even if the declaration is inside a macro,
  // the name's spelling can come from a macro argument (case 2 above). In
  // this case mapping the location to the spelling location finds the
  // argument's position (at `f` in MAKE_METHOD(`f`) above), which is not
  // where the declaration and its comment are located.
  //
  // To avoid this issue, we make use of Decl::getBeginLocation() instead.
  // While the declaration's position is where the name is written, the
  // comment is always attached to the begining of the declaration, not to
  // the name.
  //
  // In the first case, the begin location of the decl is outside the macro,
  // at the location of `typedef`. This is where the comment is found as
  // well. The begin location is not inside a macro, so it's spelling
  // location is the same.
  //
  // In the second case, the begin location of the decl is the call to the
  // macro, at `MAKE_METHOD`. However its spelling location is inside the
  // the macro at the location of `void`. This is where the comment is found
  // again.
  //
  // In the third case, there's no correct single behaviour. We want to use
  // the comment outside the macro for the definition that's inside the macro.
  // There is also a definition outside the macro, and we want the comment to
  // apply to both. The cases we care about here is NS_ENUM() and
  // NS_OPTIONS(). In general, if an enum is defined inside a macro, we should
  // try to find the comment there.

  // This is handling case 3 for NS_ENUM() and NS_OPTIONS(), which define
  // enum types inside the macro.
  if (isa<EnumDecl>(D)) {
    SourceLocation MacroCallLoc = SourceMgr.getExpansionLoc(DeclLoc);
    if (auto BufferRef =
            SourceMgr.getBufferOrNone(SourceMgr.getFileID(MacroCallLoc));
        BufferRef.has_value()) {
      llvm::StringRef buffer = BufferRef->getBuffer().substr(
          SourceMgr.getFileOffset(MacroCallLoc));
      if (buffer.starts_with("NS_ENUM(") ||
          buffer.starts_with("NS_OPTIONS(")) {
        // We want to use the comment on the call to NS_ENUM and NS_OPTIONS
        // macros for the types defined inside the macros, which is at the
        // expansion location.
        return MacroCallLoc;
      }
    }
  }
  return SourceMgr.getSpellingLoc(D->getBeginLoc());
}

return DeclLoc;
279}

281RawComment *ASTContext::getRawCommentForDeclNoCacheImpl(
  const Decl *D, const SourceLocation RepresentativeLocForDecl,
  const std::map<unsigned, RawComment *> &CommentsInTheFile) const {
// If the declaration doesn't map directly to a location in a file, we
// can't find the comment.
if (RepresentativeLocForDecl.isInvalid() ||
    !RepresentativeLocForDecl.isFileID())
  return nullptr;

// If there are no comments anywhere, we won't find anything.
if (CommentsInTheFile.empty())
  return nullptr;

// Decompose the location for the declaration and find the beginning of the
// file buffer.
const std::pair<FileID, unsigned> DeclLocDecomp =
    SourceMgr.getDecomposedLoc(RepresentativeLocForDecl);

// Slow path.
auto OffsetCommentBehindDecl =
    CommentsInTheFile.lower_bound(DeclLocDecomp.second);

// First check whether we have a trailing comment.
if (OffsetCommentBehindDecl != CommentsInTheFile.end()) {
  RawComment *CommentBehindDecl = OffsetCommentBehindDecl->second;
  if ((CommentBehindDecl->isDocumentation() ||
       LangOpts.CommentOpts.ParseAllComments) &&
      CommentBehindDecl->isTrailingComment() &&
      (isa<FieldDecl>(D) || isa<EnumConstantDecl>(D) || isa<VarDecl>(D) ||
       isa<ObjCMethodDecl>(D) || isa<ObjCPropertyDecl>(D))) {

    // Check that Doxygen trailing comment comes after the declaration, starts
    // on the same line and in the same file as the declaration.
    if (SourceMgr.getLineNumber(DeclLocDecomp.first, DeclLocDecomp.second) ==
        Comments.getCommentBeginLine(CommentBehindDecl, DeclLocDecomp.first,
                                     OffsetCommentBehindDecl->first)) {
      return CommentBehindDecl;
    }
  }
}

// The comment just after the declaration was not a trailing comment.
// Let's look at the previous comment.
if (OffsetCommentBehindDecl == CommentsInTheFile.begin())
  return nullptr;

auto OffsetCommentBeforeDecl = --OffsetCommentBehindDecl;
RawComment *CommentBeforeDecl = OffsetCommentBeforeDecl->second;

// Check that we actually have a non-member Doxygen comment.
if (!(CommentBeforeDecl->isDocumentation() ||
      LangOpts.CommentOpts.ParseAllComments) ||
    CommentBeforeDecl->isTrailingComment())
  return nullptr;

// Decompose the end of the comment.
const unsigned CommentEndOffset =
    Comments.getCommentEndOffset(CommentBeforeDecl);

// Get the corresponding buffer.
bool Invalid = false;
const char *Buffer = SourceMgr.getBufferData(DeclLocDecomp.first,
                                             &Invalid).data();
if (Invalid)
  return nullptr;

// Extract text between the comment and declaration.
StringRef Text(Buffer + CommentEndOffset,
               DeclLocDecomp.second - CommentEndOffset);

// There should be no other declarations or preprocessor directives between
// comment and declaration.
if (Text.find_last_of(";{}#@") != StringRef::npos)
  return nullptr;

return CommentBeforeDecl;
357}

359RawComment *ASTContext::getRawCommentForDeclNoCache(const Decl *D) const {
const SourceLocation DeclLoc = getDeclLocForCommentSearch(D, SourceMgr);

// If the declaration doesn't map directly to a location in a file, we
// can't find the comment.
if (DeclLoc.isInvalid() || !DeclLoc.isFileID())
  return nullptr;

if (ExternalSource && !CommentsLoaded) {
  ExternalSource->ReadComments();
  CommentsLoaded = true;
}

if (Comments.empty())
  return nullptr;

const FileID File = SourceMgr.getDecomposedLoc(DeclLoc).first;
if (!File.isValid()) {
  return nullptr;
}
const auto CommentsInThisFile = Comments.getCommentsInFile(File);
if (!CommentsInThisFile || CommentsInThisFile->empty())
  return nullptr;

return getRawCommentForDeclNoCacheImpl(D, DeclLoc, *CommentsInThisFile);
384}

386void ASTContext::addComment(const RawComment &RC) {
assert(LangOpts.RetainCommentsFromSystemHeaders ||(static_cast <bool> (LangOpts.RetainCommentsFromSystemHeaders
 || !SourceMgr.isInSystemHeader(RC.getSourceRange().getBegin(
))) ? void (0) : __assert_fail ("LangOpts.RetainCommentsFromSystemHeaders || !SourceMgr.isInSystemHeader(RC.getSourceRange().getBegin())"
, "clang/lib/AST/ASTContext.cpp", 388, __extension__ __PRETTY_FUNCTION__
))
       !SourceMgr.isInSystemHeader(RC.getSourceRange().getBegin()))(static_cast <bool> (LangOpts.RetainCommentsFromSystemHeaders
 || !SourceMgr.isInSystemHeader(RC.getSourceRange().getBegin(
))) ? void (0) : __assert_fail ("LangOpts.RetainCommentsFromSystemHeaders || !SourceMgr.isInSystemHeader(RC.getSourceRange().getBegin())"
, "clang/lib/AST/ASTContext.cpp", 388, __extension__ __PRETTY_FUNCTION__
));
Comments.addComment(RC, LangOpts.CommentOpts, BumpAlloc);
390}

392/// If we have a 'templated' declaration for a template, adjust 'D' to
393/// refer to the actual template.
394/// If we have an implicit instantiation, adjust 'D' to refer to template.
395static const Decl &adjustDeclToTemplate(const Decl &D) {
if (const auto *FD = dyn_cast<FunctionDecl>(&D)) {
  // Is this function declaration part of a function template?
  if (const FunctionTemplateDecl *FTD = FD->getDescribedFunctionTemplate())
    return *FTD;

  // Nothing to do if function is not an implicit instantiation.
  if (FD->getTemplateSpecializationKind() != TSK_ImplicitInstantiation)
    return D;

  // Function is an implicit instantiation of a function template?
  if (const FunctionTemplateDecl *FTD = FD->getPrimaryTemplate())
    return *FTD;

  // Function is instantiated from a member definition of a class template?
  if (const FunctionDecl *MemberDecl =
          FD->getInstantiatedFromMemberFunction())
    return *MemberDecl;

  return D;
}
if (const auto *VD = dyn_cast<VarDecl>(&D)) {
  // Static data member is instantiated from a member definition of a class
  // template?
  if (VD->isStaticDataMember())
    if (const VarDecl *MemberDecl = VD->getInstantiatedFromStaticDataMember())
      return *MemberDecl;

  return D;
}
if (const auto *CRD = dyn_cast<CXXRecordDecl>(&D)) {
  // Is this class declaration part of a class template?
  if (const ClassTemplateDecl *CTD = CRD->getDescribedClassTemplate())
    return *CTD;

  // Class is an implicit instantiation of a class template or partial
  // specialization?
  if (const auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(CRD)) {
    if (CTSD->getSpecializationKind() != TSK_ImplicitInstantiation)
      return D;
    llvm::PointerUnion<ClassTemplateDecl *,
                       ClassTemplatePartialSpecializationDecl *>
        PU = CTSD->getSpecializedTemplateOrPartial();
    return PU.is<ClassTemplateDecl *>()
               ? *static_cast<const Decl *>(PU.get<ClassTemplateDecl *>())
               : *static_cast<const Decl *>(
                     PU.get<ClassTemplatePartialSpecializationDecl *>());
  }

  // Class is instantiated from a member definition of a class template?
  if (const MemberSpecializationInfo *Info =
          CRD->getMemberSpecializationInfo())
    return *Info->getInstantiatedFrom();

  return D;
}
if (const auto *ED = dyn_cast<EnumDecl>(&D)) {
  // Enum is instantiated from a member definition of a class template?
  if (const EnumDecl *MemberDecl = ED->getInstantiatedFromMemberEnum())
    return *MemberDecl;

  return D;
}
// FIXME: Adjust alias templates?
return D;
460}

462const RawComment *ASTContext::getRawCommentForAnyRedecl(
                                              const Decl *D,
                                              const Decl **OriginalDecl) const {
if (!D) {
  if (OriginalDecl)
    OriginalDecl = nullptr;
  return nullptr;
}

D = &adjustDeclToTemplate(*D);

// Any comment directly attached to D?
{
  auto DeclComment = DeclRawComments.find(D);
  if (DeclComment != DeclRawComments.end()) {
    if (OriginalDecl)
      *OriginalDecl = D;
    return DeclComment->second;
  }
}

// Any comment attached to any redeclaration of D?
const Decl *CanonicalD = D->getCanonicalDecl();
if (!CanonicalD)
  return nullptr;

{
  auto RedeclComment = RedeclChainComments.find(CanonicalD);
  if (RedeclComment != RedeclChainComments.end()) {
    if (OriginalDecl)
      *OriginalDecl = RedeclComment->second;
    auto CommentAtRedecl = DeclRawComments.find(RedeclComment->second);
    assert(CommentAtRedecl != DeclRawComments.end() &&(static_cast <bool> (CommentAtRedecl != DeclRawComments
.end() && "This decl is supposed to have comment attached."
) ? void (0) : __assert_fail ("CommentAtRedecl != DeclRawComments.end() && \"This decl is supposed to have comment attached.\""
, "clang/lib/AST/ASTContext.cpp", 495, __extension__ __PRETTY_FUNCTION__
))
           "This decl is supposed to have comment attached.")(static_cast <bool> (CommentAtRedecl != DeclRawComments
.end() && "This decl is supposed to have comment attached."
) ? void (0) : __assert_fail ("CommentAtRedecl != DeclRawComments.end() && \"This decl is supposed to have comment attached.\""
, "clang/lib/AST/ASTContext.cpp", 495, __extension__ __PRETTY_FUNCTION__
));
    return CommentAtRedecl->second;
  }
}

// Any redeclarations of D that we haven't checked for comments yet?
// We can't use DenseMap::iterator directly since it'd get invalid.
auto LastCheckedRedecl = [this, CanonicalD]() -> const Decl * {
  auto LookupRes = CommentlessRedeclChains.find(CanonicalD);
  if (LookupRes != CommentlessRedeclChains.end())
    return LookupRes->second;
  return nullptr;
}();

for (const auto Redecl : D->redecls()) {
  assert(Redecl)(static_cast <bool> (Redecl) ? void (0) : __assert_fail
 ("Redecl", "clang/lib/AST/ASTContext.cpp", 510, __extension__
 __PRETTY_FUNCTION__));
  // Skip all redeclarations that have been checked previously.
  if (LastCheckedRedecl) {
    if (LastCheckedRedecl == Redecl) {
      LastCheckedRedecl = nullptr;
    }
    continue;
  }
  const RawComment *RedeclComment = getRawCommentForDeclNoCache(Redecl);
  if (RedeclComment) {
    cacheRawCommentForDecl(*Redecl, *RedeclComment);
    if (OriginalDecl)
      *OriginalDecl = Redecl;
    return RedeclComment;
  }
  CommentlessRedeclChains[CanonicalD] = Redecl;
}

if (OriginalDecl)
  *OriginalDecl = nullptr;
return nullptr;
531}

533void ASTContext::cacheRawCommentForDecl(const Decl &OriginalD,
                                      const RawComment &Comment) const {
assert(Comment.isDocumentation() || LangOpts.CommentOpts.ParseAllComments)(static_cast <bool> (Comment.isDocumentation() || LangOpts
.CommentOpts.ParseAllComments) ? void (0) : __assert_fail ("Comment.isDocumentation() || LangOpts.CommentOpts.ParseAllComments"
, "clang/lib/AST/ASTContext.cpp", 535, __extension__ __PRETTY_FUNCTION__
));
DeclRawComments.try_emplace(&OriginalD, &Comment);
const Decl *const CanonicalDecl = OriginalD.getCanonicalDecl();
RedeclChainComments.try_emplace(CanonicalDecl, &OriginalD);
CommentlessRedeclChains.erase(CanonicalDecl);
540}

542static void addRedeclaredMethods(const ObjCMethodDecl *ObjCMethod,
                 SmallVectorImpl<const NamedDecl *> &Redeclared) {
const DeclContext *DC = ObjCMethod->getDeclContext();
if (const auto *IMD = dyn_cast<ObjCImplDecl>(DC)) {
  const ObjCInterfaceDecl *ID = IMD->getClassInterface();
  if (!ID)
    return;
  // Add redeclared method here.
  for (const auto *Ext : ID->known_extensions()) {
    if (ObjCMethodDecl *RedeclaredMethod =
          Ext->getMethod(ObjCMethod->getSelector(),
                                ObjCMethod->isInstanceMethod()))
      Redeclared.push_back(RedeclaredMethod);
  }
}
557}

559void ASTContext::attachCommentsToJustParsedDecls(ArrayRef<Decl *> Decls,
                                               const Preprocessor *PP) {
if (Comments.empty() || Decls.empty())
  return;

FileID File;
for (Decl *D : Decls) {
  SourceLocation Loc = D->getLocation();
  if (Loc.isValid()) {
    // See if there are any new comments that are not attached to a decl.
    // The location doesn't have to be precise - we care only about the file.
    File = SourceMgr.getDecomposedLoc(Loc).first;
    break;
  }
}

if (File.isInvalid())
  return;

auto CommentsInThisFile = Comments.getCommentsInFile(File);
if (!CommentsInThisFile || CommentsInThisFile->empty() ||
    CommentsInThisFile->rbegin()->second->isAttached())
  return;

// There is at least one comment not attached to a decl.
// Maybe it should be attached to one of Decls?
//
// Note that this way we pick up not only comments that precede the
// declaration, but also comments that *follow* the declaration -- thanks to
// the lookahead in the lexer: we've consumed the semicolon and looked
// ahead through comments.

for (const Decl *D : Decls) {
  assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "clang/lib/AST/ASTContext.cpp", 592, __extension__ __PRETTY_FUNCTION__
));
  if (D->isInvalidDecl())
    continue;

  D = &adjustDeclToTemplate(*D);

  const SourceLocation DeclLoc = getDeclLocForCommentSearch(D, SourceMgr);

  if (DeclLoc.isInvalid() || !DeclLoc.isFileID())
    continue;

  if (DeclRawComments.count(D) > 0)
    continue;

  if (RawComment *const DocComment =
          getRawCommentForDeclNoCacheImpl(D, DeclLoc, *CommentsInThisFile)) {
    cacheRawCommentForDecl(*D, *DocComment);
    comments::FullComment *FC = DocComment->parse(*this, PP, D);
    ParsedComments[D->getCanonicalDecl()] = FC;
  }
}
613}

615comments::FullComment *ASTContext::cloneFullComment(comments::FullComment *FC,
                                                  const Decl *D) const {
auto *ThisDeclInfo = new (*this) comments::DeclInfo;
ThisDeclInfo->CommentDecl = D;
ThisDeclInfo->IsFilled = false;
ThisDeclInfo->fill();
ThisDeclInfo->CommentDecl = FC->getDecl();
if (!ThisDeclInfo->TemplateParameters)
  ThisDeclInfo->TemplateParameters = FC->getDeclInfo()->TemplateParameters;
comments::FullComment *CFC =
  new (*this) comments::FullComment(FC->getBlocks(),
                                    ThisDeclInfo);
return CFC;
628}

630comments::FullComment *ASTContext::getLocalCommentForDeclUncached(const Decl *D) const {
const RawComment *RC = getRawCommentForDeclNoCache(D);
return RC ? RC->parse(*this, nullptr, D) : nullptr;
633}

635comments::FullComment *ASTContext::getCommentForDecl(
                                            const Decl *D,
                                            const Preprocessor *PP) const {
if (!D || D->isInvalidDecl())
  return nullptr;
D = &adjustDeclToTemplate(*D);

const Decl *Canonical = D->getCanonicalDecl();
llvm::DenseMap<const Decl *, comments::FullComment *>::iterator Pos =
    ParsedComments.find(Canonical);

if (Pos != ParsedComments.end()) {
  if (Canonical != D) {
    comments::FullComment *FC = Pos->second;
    comments::FullComment *CFC = cloneFullComment(FC, D);
    return CFC;
  }
  return Pos->second;
}

const Decl *OriginalDecl = nullptr;

const RawComment *RC = getRawCommentForAnyRedecl(D, &OriginalDecl);
if (!RC) {
  if (isa<ObjCMethodDecl>(D) || isa<FunctionDecl>(D)) {
    SmallVector<const NamedDecl*, 8> Overridden;
    const auto *OMD = dyn_cast<ObjCMethodDecl>(D);
    if (OMD && OMD->isPropertyAccessor())
      if (const ObjCPropertyDecl *PDecl = OMD->findPropertyDecl())
        if (comments::FullComment *FC = getCommentForDecl(PDecl, PP))
          return cloneFullComment(FC, D);
    if (OMD)
      addRedeclaredMethods(OMD, Overridden);
    getOverriddenMethods(dyn_cast<NamedDecl>(D), Overridden);
    for (unsigned i = 0, e = Overridden.size(); i < e; i++)
      if (comments::FullComment *FC = getCommentForDecl(Overridden[i], PP))
        return cloneFullComment(FC, D);
  }
  else if (const auto *TD = dyn_cast<TypedefNameDecl>(D)) {
    // Attach any tag type's documentation to its typedef if latter
    // does not have one of its own.
    QualType QT = TD->getUnderlyingType();
    if (const auto *TT = QT->getAs<TagType>())
      if (const Decl *TD = TT->getDecl())
        if (comments::FullComment *FC = getCommentForDecl(TD, PP))
          return cloneFullComment(FC, D);
  }
  else if (const auto *IC = dyn_cast<ObjCInterfaceDecl>(D)) {
    while (IC->getSuperClass()) {
      IC = IC->getSuperClass();
      if (comments::FullComment *FC = getCommentForDecl(IC, PP))
        return cloneFullComment(FC, D);
    }
  }
  else if (const auto *CD = dyn_cast<ObjCCategoryDecl>(D)) {
    if (const ObjCInterfaceDecl *IC = CD->getClassInterface())
      if (comments::FullComment *FC = getCommentForDecl(IC, PP))
        return cloneFullComment(FC, D);
  }
  else if (const auto *RD = dyn_cast<CXXRecordDecl>(D)) {
    if (!(RD = RD->getDefinition()))
      return nullptr;
    // Check non-virtual bases.
    for (const auto &I : RD->bases()) {
      if (I.isVirtual() || (I.getAccessSpecifier() != AS_public))
        continue;
      QualType Ty = I.getType();
      if (Ty.isNull())
        continue;
      if (const CXXRecordDecl *NonVirtualBase = Ty->getAsCXXRecordDecl()) {
        if (!(NonVirtualBase= NonVirtualBase->getDefinition()))
          continue;

        if (comments::FullComment *FC = getCommentForDecl((NonVirtualBase), PP))
          return cloneFullComment(FC, D);
      }
    }
    // Check virtual bases.
    for (const auto &I : RD->vbases()) {
      if (I.getAccessSpecifier() != AS_public)
        continue;
      QualType Ty = I.getType();
      if (Ty.isNull())
        continue;
      if (const CXXRecordDecl *VirtualBase = Ty->getAsCXXRecordDecl()) {
        if (!(VirtualBase= VirtualBase->getDefinition()))
          continue;
        if (comments::FullComment *FC = getCommentForDecl((VirtualBase), PP))
          return cloneFullComment(FC, D);
      }
    }
  }
  return nullptr;
}

// If the RawComment was attached to other redeclaration of this Decl, we
// should parse the comment in context of that other Decl.  This is important
// because comments can contain references to parameter names which can be
// different across redeclarations.
if (D != OriginalDecl && OriginalDecl)
  return getCommentForDecl(OriginalDecl, PP);

comments::FullComment *FC = RC->parse(*this, PP, D);
ParsedComments[Canonical] = FC;
return FC;
740}

742void
743ASTContext::CanonicalTemplateTemplateParm::Profile(llvm::FoldingSetNodeID &ID,
                                                 const ASTContext &C,
                                             TemplateTemplateParmDecl *Parm) {
ID.AddInteger(Parm->getDepth());
ID.AddInteger(Parm->getPosition());
ID.AddBoolean(Parm->isParameterPack());

TemplateParameterList *Params = Parm->getTemplateParameters();
ID.AddInteger(Params->size());
for (TemplateParameterList::const_iterator P = Params->begin(),
                                        PEnd = Params->end();
     P != PEnd; ++P) {
  if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(*P)) {
    ID.AddInteger(0);
    ID.AddBoolean(TTP->isParameterPack());
    if (TTP->isExpandedParameterPack()) {
      ID.AddBoolean(true);
      ID.AddInteger(TTP->getNumExpansionParameters());
    } else
      ID.AddBoolean(false);
    continue;
  }

  if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(*P)) {
    ID.AddInteger(1);
    ID.AddBoolean(NTTP->isParameterPack());
    ID.AddPointer(C.getUnconstrainedType(C.getCanonicalType(NTTP->getType()))
                      .getAsOpaquePtr());
    if (NTTP->isExpandedParameterPack()) {
      ID.AddBoolean(true);
      ID.AddInteger(NTTP->getNumExpansionTypes());
      for (unsigned I = 0, N = NTTP->getNumExpansionTypes(); I != N; ++I) {
        QualType T = NTTP->getExpansionType(I);
        ID.AddPointer(T.getCanonicalType().getAsOpaquePtr());
      }
    } else
      ID.AddBoolean(false);
    continue;
  }

  auto *TTP = cast<TemplateTemplateParmDecl>(*P);
  ID.AddInteger(2);
  Profile(ID, C, TTP);
}
787}

789TemplateTemplateParmDecl *
790ASTContext::getCanonicalTemplateTemplateParmDecl(
                                        TemplateTemplateParmDecl *TTP) const {
// Check if we already have a canonical template template parameter.
llvm::FoldingSetNodeID ID;
CanonicalTemplateTemplateParm::Profile(ID, *this, TTP);
void *InsertPos = nullptr;
CanonicalTemplateTemplateParm *Canonical
  = CanonTemplateTemplateParms.FindNodeOrInsertPos(ID, InsertPos);
if (Canonical)
  return Canonical->getParam();

// Build a canonical template parameter list.
TemplateParameterList *Params = TTP->getTemplateParameters();
SmallVector<NamedDecl *, 4> CanonParams;
CanonParams.reserve(Params->size());
for (TemplateParameterList::const_iterator P = Params->begin(),
                                        PEnd = Params->end();
     P != PEnd; ++P) {
  // Note that, per C++20 [temp.over.link]/6, when determining whether
  // template-parameters are equivalent, constraints are ignored.
  if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(*P)) {
    TemplateTypeParmDecl *NewTTP = TemplateTypeParmDecl::Create(
        *this, getTranslationUnitDecl(), SourceLocation(), SourceLocation(),
        TTP->getDepth(), TTP->getIndex(), nullptr, false,
        TTP->isParameterPack(), /*HasTypeConstraint=*/false,
        TTP->isExpandedParameterPack()
            ? std::optional<unsigned>(TTP->getNumExpansionParameters())
            : std::nullopt);
    CanonParams.push_back(NewTTP);
  } else if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(*P)) {
    QualType T = getUnconstrainedType(getCanonicalType(NTTP->getType()));
    TypeSourceInfo *TInfo = getTrivialTypeSourceInfo(T);
    NonTypeTemplateParmDecl *Param;
    if (NTTP->isExpandedParameterPack()) {
      SmallVector<QualType, 2> ExpandedTypes;
      SmallVector<TypeSourceInfo *, 2> ExpandedTInfos;
      for (unsigned I = 0, N = NTTP->getNumExpansionTypes(); I != N; ++I) {
        ExpandedTypes.push_back(getCanonicalType(NTTP->getExpansionType(I)));
        ExpandedTInfos.push_back(
                              getTrivialTypeSourceInfo(ExpandedTypes.back()));
      }

      Param = NonTypeTemplateParmDecl::Create(*this, getTranslationUnitDecl(),
                                              SourceLocation(),
                                              SourceLocation(),
                                              NTTP->getDepth(),
                                              NTTP->getPosition(), nullptr,
                                              T,
                                              TInfo,
                                              ExpandedTypes,
                                              ExpandedTInfos);
    } else {
      Param = NonTypeTemplateParmDecl::Create(*this, getTranslationUnitDecl(),
                                              SourceLocation(),
                                              SourceLocation(),
                                              NTTP->getDepth(),
                                              NTTP->getPosition(), nullptr,
                                              T,
                                              NTTP->isParameterPack(),
                                              TInfo);
    }
    CanonParams.push_back(Param);
  } else
    CanonParams.push_back(getCanonicalTemplateTemplateParmDecl(
                                         cast<TemplateTemplateParmDecl>(*P)));
}

TemplateTemplateParmDecl *CanonTTP = TemplateTemplateParmDecl::Create(
    *this, getTranslationUnitDecl(), SourceLocation(), TTP->getDepth(),
    TTP->getPosition(), TTP->isParameterPack(), nullptr,
    TemplateParameterList::Create(*this, SourceLocation(), SourceLocation(),
                                  CanonParams, SourceLocation(),
                                  /*RequiresClause=*/nullptr));

// Get the new insert position for the node we care about.
Canonical = CanonTemplateTemplateParms.FindNodeOrInsertPos(ID, InsertPos);
assert(!Canonical && "Shouldn't be in the map!")(static_cast <bool> (!Canonical && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!Canonical && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 866, __extension__ __PRETTY_FUNCTION__
));
(void)Canonical;

// Create the canonical template template parameter entry.
Canonical = new (*this) CanonicalTemplateTemplateParm(CanonTTP);
CanonTemplateTemplateParms.InsertNode(Canonical, InsertPos);
return CanonTTP;
873}

875TargetCXXABI::Kind ASTContext::getCXXABIKind() const {
auto Kind = getTargetInfo().getCXXABI().getKind();
return getLangOpts().CXXABI.value_or(Kind);
878}

880CXXABI *ASTContext::createCXXABI(const TargetInfo &T) {
if (!LangOpts.CPlusPlus) return nullptr;

switch (getCXXABIKind()) {
case TargetCXXABI::AppleARM64:
case TargetCXXABI::Fuchsia:
case TargetCXXABI::GenericARM: // Same as Itanium at this level
case TargetCXXABI::iOS:
case TargetCXXABI::WatchOS:
case TargetCXXABI::GenericAArch64:
case TargetCXXABI::GenericMIPS:
case TargetCXXABI::GenericItanium:
case TargetCXXABI::WebAssembly:
case TargetCXXABI::XL:
  return CreateItaniumCXXABI(*this);
case TargetCXXABI::Microsoft:
  return CreateMicrosoftCXXABI(*this);
}
llvm_unreachable("Invalid CXXABI type!")::llvm::llvm_unreachable_internal("Invalid CXXABI type!", "clang/lib/AST/ASTContext.cpp"
, 898);
899}

901interp::Context &ASTContext::getInterpContext() {
if (!InterpContext) {
  InterpContext.reset(new interp::Context(*this));
}
return *InterpContext.get();
906}

908ParentMapContext &ASTContext::getParentMapContext() {
if (!ParentMapCtx)
  ParentMapCtx.reset(new ParentMapContext(*this));
return *ParentMapCtx.get();
912}

914static bool isAddrSpaceMapManglingEnabled(const TargetInfo &TI,
                                        const LangOptions &LangOpts) {
switch (LangOpts.getAddressSpaceMapMangling()) {
case LangOptions::ASMM_Target:
  return TI.useAddressSpaceMapMangling();
case LangOptions::ASMM_On:
  return true;
case LangOptions::ASMM_Off:
  return false;
}
llvm_unreachable("getAddressSpaceMapMangling() doesn't cover anything.")::llvm::llvm_unreachable_internal("getAddressSpaceMapMangling() doesn't cover anything."
, "clang/lib/AST/ASTContext.cpp", 924);
925}

927ASTContext::ASTContext(LangOptions &LOpts, SourceManager &SM,
                     IdentifierTable &idents, SelectorTable &sels,
                     Builtin::Context &builtins, TranslationUnitKind TUKind)
  : ConstantArrayTypes(this_(), ConstantArrayTypesLog2InitSize),
    FunctionProtoTypes(this_(), FunctionProtoTypesLog2InitSize),
    TemplateSpecializationTypes(this_()),
    DependentTemplateSpecializationTypes(this_()), AutoTypes(this_()),
    SubstTemplateTemplateParmPacks(this_()),
    CanonTemplateTemplateParms(this_()), SourceMgr(SM), LangOpts(LOpts),
    NoSanitizeL(new NoSanitizeList(LangOpts.NoSanitizeFiles, SM)),
    XRayFilter(new XRayFunctionFilter(LangOpts.XRayAlwaysInstrumentFiles,
                                      LangOpts.XRayNeverInstrumentFiles,
                                      LangOpts.XRayAttrListFiles, SM)),
    ProfList(new ProfileList(LangOpts.ProfileListFiles, SM)),
    PrintingPolicy(LOpts), Idents(idents), Selectors(sels),
    BuiltinInfo(builtins), TUKind(TUKind), DeclarationNames(*this),
    Comments(SM), CommentCommandTraits(BumpAlloc, LOpts.CommentOpts),
    CompCategories(this_()), LastSDM(nullptr, 0) {
addTranslationUnitDecl();
946}

948void ASTContext::cleanup() {
// Release the DenseMaps associated with DeclContext objects.
// FIXME: Is this the ideal solution?
ReleaseDeclContextMaps();

// Call all of the deallocation functions on all of their targets.
for (auto &Pair : Deallocations)
  (Pair.first)(Pair.second);
Deallocations.clear();

// ASTRecordLayout objects in ASTRecordLayouts must always be destroyed
// because they can contain DenseMaps.
for (llvm::DenseMap<const ObjCContainerDecl*,
     const ASTRecordLayout*>::iterator
     I = ObjCLayouts.begin(), E = ObjCLayouts.end(); I != E; )
  // Increment in loop to prevent using deallocated memory.
  if (auto *R = const_cast<ASTRecordLayout *>((I++)->second))
    R->Destroy(*this);
ObjCLayouts.clear();

for (llvm::DenseMap<const RecordDecl*, const ASTRecordLayout*>::iterator
     I = ASTRecordLayouts.begin(), E = ASTRecordLayouts.end(); I != E; ) {
  // Increment in loop to prevent using deallocated memory.
  if (auto *R = const_cast<ASTRecordLayout *>((I++)->second))
    R->Destroy(*this);
}
ASTRecordLayouts.clear();

for (llvm::DenseMap<const Decl*, AttrVec*>::iterator A = DeclAttrs.begin(),
                                                  AEnd = DeclAttrs.end();
     A != AEnd; ++A)
  A->second->~AttrVec();
DeclAttrs.clear();

for (const auto &Value : ModuleInitializers)
  Value.second->~PerModuleInitializers();
ModuleInitializers.clear();
985}

987ASTContext::~ASTContext() { cleanup(); }

989void ASTContext::setTraversalScope(const std::vector<Decl *> &TopLevelDecls) {
TraversalScope = TopLevelDecls;
getParentMapContext().clear();
992}

994void ASTContext::AddDeallocation(void (*Callback)(void *), void *Data) const {
Deallocations.push_back({Callback, Data});
996}

998void
999ASTContext::setExternalSource(IntrusiveRefCntPtr<ExternalASTSource> Source) {
ExternalSource = std::move(Source);
1001}

1003void ASTContext::PrintStats() const {
llvm::errs() << "\n*** AST Context Stats:\n";
llvm::errs() << "  " << Types.size() << " types total.\n";

unsigned counts[] = {
1008#define TYPE(Name, Parent) 0,
1009#define ABSTRACT_TYPE(Name, Parent)
1010#include "clang/AST/TypeNodes.inc"
  0 // Extra
};

for (unsigned i = 0, e = Types.size(); i != e; ++i) {
  Type *T = Types[i];
  counts[(unsigned)T->getTypeClass()]++;
}

unsigned Idx = 0;
unsigned TotalBytes = 0;
1021#define TYPE(Name, Parent)                                              \
if (counts[Idx])                                                      \
  llvm::errs() << "    " << counts[Idx] << " " << #Name               \
               << " types, " << sizeof(Name##Type) << " each "        \
               << "(" << counts[Idx] * sizeof(Name##Type)             \
               << " bytes)\n";                                        \
TotalBytes += counts[Idx] * sizeof(Name##Type);                       \
++Idx;
1029#define ABSTRACT_TYPE(Name, Parent)
1030#include "clang/AST/TypeNodes.inc"

llvm::errs() << "Total bytes = " << TotalBytes << "\n";

// Implicit special member functions.
llvm::errs() << NumImplicitDefaultConstructorsDeclared << "/"
             << NumImplicitDefaultConstructors
             << " implicit default constructors created\n";
llvm::errs() << NumImplicitCopyConstructorsDeclared << "/"
             << NumImplicitCopyConstructors
             << " implicit copy constructors created\n";
if (getLangOpts().CPlusPlus)
  llvm::errs() << NumImplicitMoveConstructorsDeclared << "/"
               << NumImplicitMoveConstructors
               << " implicit move constructors created\n";
llvm::errs() << NumImplicitCopyAssignmentOperatorsDeclared << "/"
             << NumImplicitCopyAssignmentOperators
             << " implicit copy assignment operators created\n";
if (getLangOpts().CPlusPlus)
  llvm::errs() << NumImplicitMoveAssignmentOperatorsDeclared << "/"
               << NumImplicitMoveAssignmentOperators
               << " implicit move assignment operators created\n";
llvm::errs() << NumImplicitDestructorsDeclared << "/"
             << NumImplicitDestructors
             << " implicit destructors created\n";

if (ExternalSource) {
  llvm::errs() << "\n";
  ExternalSource->PrintStats();
}

BumpAlloc.PrintStats();
1062}

1064void ASTContext::mergeDefinitionIntoModule(NamedDecl *ND, Module *M,
                                         bool NotifyListeners) {
if (NotifyListeners)
  if (auto *Listener = getASTMutationListener())
    Listener->RedefinedHiddenDefinition(ND, M);

MergedDefModules[cast<NamedDecl>(ND->getCanonicalDecl())].push_back(M);
1071}

1073void ASTContext::deduplicateMergedDefinitonsFor(NamedDecl *ND) {
auto It = MergedDefModules.find(cast<NamedDecl>(ND->getCanonicalDecl()));
if (It == MergedDefModules.end())
  return;

auto &Merged = It->second;
llvm::DenseSet<Module*> Found;
for (Module *&M : Merged)
  if (!Found.insert(M).second)
    M = nullptr;
llvm::erase_value(Merged, nullptr);
1084}

1086ArrayRef<Module *>
1087ASTContext::getModulesWithMergedDefinition(const NamedDecl *Def) {
auto MergedIt =
    MergedDefModules.find(cast<NamedDecl>(Def->getCanonicalDecl()));
if (MergedIt == MergedDefModules.end())
  return std::nullopt;
return MergedIt->second;
1093}

1095void ASTContext::PerModuleInitializers::resolve(ASTContext &Ctx) {
if (LazyInitializers.empty())
  return;

auto *Source = Ctx.getExternalSource();
assert(Source && "lazy initializers but no external source")(static_cast <bool> (Source && "lazy initializers but no external source"
) ? void (0) : __assert_fail ("Source && \"lazy initializers but no external source\""
, "clang/lib/AST/ASTContext.cpp", 1100, __extension__ __PRETTY_FUNCTION__
));

auto LazyInits = std::move(LazyInitializers);
LazyInitializers.clear();

for (auto ID : LazyInits)
  Initializers.push_back(Source->GetExternalDecl(ID));

assert(LazyInitializers.empty() &&(static_cast <bool> (LazyInitializers.empty() &&
 "GetExternalDecl for lazy module initializer added more inits"
) ? void (0) : __assert_fail ("LazyInitializers.empty() && \"GetExternalDecl for lazy module initializer added more inits\""
, "clang/lib/AST/ASTContext.cpp", 1109, __extension__ __PRETTY_FUNCTION__
))
       "GetExternalDecl for lazy module initializer added more inits")(static_cast <bool> (LazyInitializers.empty() &&
 "GetExternalDecl for lazy module initializer added more inits"
) ? void (0) : __assert_fail ("LazyInitializers.empty() && \"GetExternalDecl for lazy module initializer added more inits\""
, "clang/lib/AST/ASTContext.cpp", 1109, __extension__ __PRETTY_FUNCTION__
));
1110}

1112void ASTContext::addModuleInitializer(Module *M, Decl *D) {
// One special case: if we add a module initializer that imports another
// module, and that module's only initializer is an ImportDecl, simplify.
if (const auto *ID = dyn_cast<ImportDecl>(D)) {
  auto It = ModuleInitializers.find(ID->getImportedModule());

  // Maybe the ImportDecl does nothing at all. (Common case.)
  if (It == ModuleInitializers.end())
    return;

  // Maybe the ImportDecl only imports another ImportDecl.
  auto &Imported = *It->second;
  if (Imported.Initializers.size() + Imported.LazyInitializers.size() == 1) {
    Imported.resolve(*this);
    auto *OnlyDecl = Imported.Initializers.front();
    if (isa<ImportDecl>(OnlyDecl))
      D = OnlyDecl;
  }
}

auto *&Inits = ModuleInitializers[M];
if (!Inits)
  Inits = new (*this) PerModuleInitializers;
Inits->Initializers.push_back(D);
1136}

1138void ASTContext::addLazyModuleInitializers(Module *M, ArrayRef<uint32_t> IDs) {
auto *&Inits = ModuleInitializers[M];
if (!Inits)
  Inits = new (*this) PerModuleInitializers;
Inits->LazyInitializers.insert(Inits->LazyInitializers.end(),
                               IDs.begin(), IDs.end());
1144}

1146ArrayRef<Decl *> ASTContext::getModuleInitializers(Module *M) {
auto It = ModuleInitializers.find(M);
if (It == ModuleInitializers.end())
  return std::nullopt;

auto *Inits = It->second;
Inits->resolve(*this);
return Inits->Initializers;
1154}

1156void ASTContext::setCurrentNamedModule(Module *M) {
assert(M->isModulePurview())(static_cast <bool> (M->isModulePurview()) ? void (0
) : __assert_fail ("M->isModulePurview()", "clang/lib/AST/ASTContext.cpp"
, 1157, __extension__ __PRETTY_FUNCTION__));
assert(!CurrentCXXNamedModule &&(static_cast <bool> (!CurrentCXXNamedModule && "We should set named module for ASTContext for only once"
) ? void (0) : __assert_fail ("!CurrentCXXNamedModule && \"We should set named module for ASTContext for only once\""
, "clang/lib/AST/ASTContext.cpp", 1159, __extension__ __PRETTY_FUNCTION__
))
       "We should set named module for ASTContext for only once")(static_cast <bool> (!CurrentCXXNamedModule && "We should set named module for ASTContext for only once"
) ? void (0) : __assert_fail ("!CurrentCXXNamedModule && \"We should set named module for ASTContext for only once\""
, "clang/lib/AST/ASTContext.cpp", 1159, __extension__ __PRETTY_FUNCTION__
));
CurrentCXXNamedModule = M;
1161}

1163ExternCContextDecl *ASTContext::getExternCContextDecl() const {
if (!ExternCContext)
  ExternCContext = ExternCContextDecl::Create(*this, getTranslationUnitDecl());

return ExternCContext;
1168}

1170BuiltinTemplateDecl *
1171ASTContext::buildBuiltinTemplateDecl(BuiltinTemplateKind BTK,
                                   const IdentifierInfo *II) const {
auto *BuiltinTemplate =
    BuiltinTemplateDecl::Create(*this, getTranslationUnitDecl(), II, BTK);
BuiltinTemplate->setImplicit();
getTranslationUnitDecl()->addDecl(BuiltinTemplate);

return BuiltinTemplate;
1179}

1181BuiltinTemplateDecl *
1182ASTContext::getMakeIntegerSeqDecl() const {
if (!MakeIntegerSeqDecl)
  MakeIntegerSeqDecl = buildBuiltinTemplateDecl(BTK__make_integer_seq,
                                                getMakeIntegerSeqName());
return MakeIntegerSeqDecl;
1187}

1189BuiltinTemplateDecl *
1190ASTContext::getTypePackElementDecl() const {
if (!TypePackElementDecl)
  TypePackElementDecl = buildBuiltinTemplateDecl(BTK__type_pack_element,
                                                 getTypePackElementName());
return TypePackElementDecl;
1195}

1197RecordDecl *ASTContext::buildImplicitRecord(StringRef Name,
                                          RecordDecl::TagKind TK) const {
SourceLocation Loc;
RecordDecl *NewDecl;
if (getLangOpts().CPlusPlus)
  NewDecl = CXXRecordDecl::Create(*this, TK, getTranslationUnitDecl(), Loc,
                                  Loc, &Idents.get(Name));
else
  NewDecl = RecordDecl::Create(*this, TK, getTranslationUnitDecl(), Loc, Loc,
                               &Idents.get(Name));
NewDecl->setImplicit();
NewDecl->addAttr(TypeVisibilityAttr::CreateImplicit(
    const_cast<ASTContext &>(*this), TypeVisibilityAttr::Default));
return NewDecl;
1211}

1213TypedefDecl *ASTContext::buildImplicitTypedef(QualType T,
                                            StringRef Name) const {
TypeSourceInfo *TInfo = getTrivialTypeSourceInfo(T);
TypedefDecl *NewDecl = TypedefDecl::Create(
    const_cast<ASTContext &>(*this), getTranslationUnitDecl(),
    SourceLocation(), SourceLocation(), &Idents.get(Name), TInfo);
NewDecl->setImplicit();
return NewDecl;
1221}

1223TypedefDecl *ASTContext::getInt128Decl() const {
if (!Int128Decl)
  Int128Decl = buildImplicitTypedef(Int128Ty, "__int128_t");
return Int128Decl;
1227}

1229TypedefDecl *ASTContext::getUInt128Decl() const {
if (!UInt128Decl)
  UInt128Decl = buildImplicitTypedef(UnsignedInt128Ty, "__uint128_t");
return UInt128Decl;
1233}

1235void ASTContext::InitBuiltinType(CanQualType &R, BuiltinType::Kind K) {
auto *Ty = new (*this, TypeAlignment) BuiltinType(K);
R = CanQualType::CreateUnsafe(QualType(Ty, 0));
Types.push_back(Ty);
1239}

1241void ASTContext::InitBuiltinTypes(const TargetInfo &Target,
                                const TargetInfo *AuxTarget) {
assert((!this->Target || this->Target == &Target) &&(static_cast <bool> ((!this->Target || this->Target
 == &Target) && "Incorrect target reinitialization"
) ? void (0) : __assert_fail ("(!this->Target || this->Target == &Target) && \"Incorrect target reinitialization\""
, "clang/lib/AST/ASTContext.cpp", 1244, __extension__ __PRETTY_FUNCTION__
))
       "Incorrect target reinitialization")(static_cast <bool> ((!this->Target || this->Target
 == &Target) && "Incorrect target reinitialization"
) ? void (0) : __assert_fail ("(!this->Target || this->Target == &Target) && \"Incorrect target reinitialization\""
, "clang/lib/AST/ASTContext.cpp", 1244, __extension__ __PRETTY_FUNCTION__
));
assert(VoidTy.isNull() && "Context reinitialized?")(static_cast <bool> (VoidTy.isNull() && "Context reinitialized?"
) ? void (0) : __assert_fail ("VoidTy.isNull() && \"Context reinitialized?\""
, "clang/lib/AST/ASTContext.cpp", 1245, __extension__ __PRETTY_FUNCTION__
));

this->Target = &Target;
this->AuxTarget = AuxTarget;

ABI.reset(createCXXABI(Target));
AddrSpaceMapMangling = isAddrSpaceMapManglingEnabled(Target, LangOpts);

// C99 6.2.5p19.
InitBuiltinType(VoidTy,              BuiltinType::Void);

// C99 6.2.5p2.
InitBuiltinType(BoolTy,              BuiltinType::Bool);
// C99 6.2.5p3.
if (LangOpts.CharIsSigned)
  InitBuiltinType(CharTy,            BuiltinType::Char_S);
else
  InitBuiltinType(CharTy,            BuiltinType::Char_U);
// C99 6.2.5p4.
InitBuiltinType(SignedCharTy,        BuiltinType::SChar);
InitBuiltinType(ShortTy,             BuiltinType::Short);
InitBuiltinType(IntTy,               BuiltinType::Int);
InitBuiltinType(LongTy,              BuiltinType::Long);
InitBuiltinType(LongLongTy,          BuiltinType::LongLong);

// C99 6.2.5p6.
InitBuiltinType(UnsignedCharTy,      BuiltinType::UChar);
InitBuiltinType(UnsignedShortTy,     BuiltinType::UShort);
InitBuiltinType(UnsignedIntTy,       BuiltinType::UInt);
InitBuiltinType(UnsignedLongTy,      BuiltinType::ULong);
InitBuiltinType(UnsignedLongLongTy,  BuiltinType::ULongLong);

// C99 6.2.5p10.
InitBuiltinType(FloatTy,             BuiltinType::Float);
InitBuiltinType(DoubleTy,            BuiltinType::Double);
InitBuiltinType(LongDoubleTy,        BuiltinType::LongDouble);

// GNU extension, __float128 for IEEE quadruple precision
InitBuiltinType(Float128Ty,          BuiltinType::Float128);

// __ibm128 for IBM extended precision
InitBuiltinType(Ibm128Ty, BuiltinType::Ibm128);

// C11 extension ISO/IEC TS 18661-3
InitBuiltinType(Float16Ty,           BuiltinType::Float16);

// ISO/IEC JTC1 SC22 WG14 N1169 Extension
InitBuiltinType(ShortAccumTy,            BuiltinType::ShortAccum);
InitBuiltinType(AccumTy,                 BuiltinType::Accum);
InitBuiltinType(LongAccumTy,             BuiltinType::LongAccum);
InitBuiltinType(UnsignedShortAccumTy,    BuiltinType::UShortAccum);
InitBuiltinType(UnsignedAccumTy,         BuiltinType::UAccum);
InitBuiltinType(UnsignedLongAccumTy,     BuiltinType::ULongAccum);
InitBuiltinType(ShortFractTy,            BuiltinType::ShortFract);
InitBuiltinType(FractTy,                 BuiltinType::Fract);
InitBuiltinType(LongFractTy,             BuiltinType::LongFract);
InitBuiltinType(UnsignedShortFractTy,    BuiltinType::UShortFract);
InitBuiltinType(UnsignedFractTy,         BuiltinType::UFract);
InitBuiltinType(UnsignedLongFractTy,     BuiltinType::ULongFract);
InitBuiltinType(SatShortAccumTy,         BuiltinType::SatShortAccum);
InitBuiltinType(SatAccumTy,              BuiltinType::SatAccum);
InitBuiltinType(SatLongAccumTy,          BuiltinType::SatLongAccum);
InitBuiltinType(SatUnsignedShortAccumTy, BuiltinType::SatUShortAccum);
InitBuiltinType(SatUnsignedAccumTy,      BuiltinType::SatUAccum);
InitBuiltinType(SatUnsignedLongAccumTy,  BuiltinType::SatULongAccum);
InitBuiltinType(SatShortFractTy,         BuiltinType::SatShortFract);
InitBuiltinType(SatFractTy,              BuiltinType::SatFract);
InitBuiltinType(SatLongFractTy,          BuiltinType::SatLongFract);
InitBuiltinType(SatUnsignedShortFractTy, BuiltinType::SatUShortFract);
InitBuiltinType(SatUnsignedFractTy,      BuiltinType::SatUFract);
InitBuiltinType(SatUnsignedLongFractTy,  BuiltinType::SatULongFract);

// GNU extension, 128-bit integers.
InitBuiltinType(Int128Ty,            BuiltinType::Int128);
InitBuiltinType(UnsignedInt128Ty,    BuiltinType::UInt128);

// C++ 3.9.1p5
if (TargetInfo::isTypeSigned(Target.getWCharType()))
  InitBuiltinType(WCharTy,           BuiltinType::WChar_S);
else  // -fshort-wchar makes wchar_t be unsigned.
  InitBuiltinType(WCharTy,           BuiltinType::WChar_U);
if (LangOpts.CPlusPlus && LangOpts.WChar)
  WideCharTy = WCharTy;
else {
  // C99 (or C++ using -fno-wchar).
  WideCharTy = getFromTargetType(Target.getWCharType());
}

WIntTy = getFromTargetType(Target.getWIntType());

// C++20 (proposed)
InitBuiltinType(Char8Ty,              BuiltinType::Char8);

if (LangOpts.CPlusPlus) // C++0x 3.9.1p5, extension for C++
  InitBuiltinType(Char16Ty,           BuiltinType::Char16);
else // C99
  Char16Ty = getFromTargetType(Target.getChar16Type());

if (LangOpts.CPlusPlus) // C++0x 3.9.1p5, extension for C++
  InitBuiltinType(Char32Ty,           BuiltinType::Char32);
else // C99
  Char32Ty = getFromTargetType(Target.getChar32Type());

// Placeholder type for type-dependent expressions whose type is
// completely unknown. No code should ever check a type against
// DependentTy and users should never see it; however, it is here to
// help diagnose failures to properly check for type-dependent
// expressions.
InitBuiltinType(DependentTy,         BuiltinType::Dependent);

// Placeholder type for functions.
InitBuiltinType(OverloadTy,          BuiltinType::Overload);

// Placeholder type for bound members.
InitBuiltinType(BoundMemberTy,       BuiltinType::BoundMember);

// Placeholder type for pseudo-objects.
InitBuiltinType(PseudoObjectTy,      BuiltinType::PseudoObject);

// "any" type; useful for debugger-like clients.
InitBuiltinType(UnknownAnyTy,        BuiltinType::UnknownAny);

// Placeholder type for unbridged ARC casts.
InitBuiltinType(ARCUnbridgedCastTy,  BuiltinType::ARCUnbridgedCast);

// Placeholder type for builtin functions.
InitBuiltinType(BuiltinFnTy,  BuiltinType::BuiltinFn);

// Placeholder type for OMP array sections.
if (LangOpts.OpenMP) {
  InitBuiltinType(OMPArraySectionTy, BuiltinType::OMPArraySection);
  InitBuiltinType(OMPArrayShapingTy, BuiltinType::OMPArrayShaping);
  InitBuiltinType(OMPIteratorTy, BuiltinType::OMPIterator);
}
if (LangOpts.MatrixTypes)
  InitBuiltinType(IncompleteMatrixIdxTy, BuiltinType::IncompleteMatrixIdx);

// Builtin types for 'id', 'Class', and 'SEL'.
InitBuiltinType(ObjCBuiltinIdTy, BuiltinType::ObjCId);
InitBuiltinType(ObjCBuiltinClassTy, BuiltinType::ObjCClass);
InitBuiltinType(ObjCBuiltinSelTy, BuiltinType::ObjCSel);

if (LangOpts.OpenCL) {
1388#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
  InitBuiltinType(SingletonId, BuiltinType::Id);
1390#include "clang/Basic/OpenCLImageTypes.def"

  InitBuiltinType(OCLSamplerTy, BuiltinType::OCLSampler);
  InitBuiltinType(OCLEventTy, BuiltinType::OCLEvent);
  InitBuiltinType(OCLClkEventTy, BuiltinType::OCLClkEvent);
  InitBuiltinType(OCLQueueTy, BuiltinType::OCLQueue);
  InitBuiltinType(OCLReserveIDTy, BuiltinType::OCLReserveID);

1398#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
  InitBuiltinType(Id##Ty, BuiltinType::Id);
1400#include "clang/Basic/OpenCLExtensionTypes.def"
}

if (Target.hasAArch64SVETypes()) {
1404#define SVE_TYPE(Name, Id, SingletonId) \
  InitBuiltinType(SingletonId, BuiltinType::Id);
1406#include "clang/Basic/AArch64SVEACLETypes.def"
}

if (Target.getTriple().isPPC64()) {
1410#define PPC_VECTOR_MMA_TYPE(Name, Id, Size) \
    InitBuiltinType(Id##Ty, BuiltinType::Id);
1412#include "clang/Basic/PPCTypes.def"
1413#define PPC_VECTOR_VSX_TYPE(Name, Id, Size) \
  InitBuiltinType(Id##Ty, BuiltinType::Id);
1415#include "clang/Basic/PPCTypes.def"
}

if (Target.hasRISCVVTypes()) {
1419#define RVV_TYPE(Name, Id, SingletonId)                                        \
InitBuiltinType(SingletonId, BuiltinType::Id);
1421#include "clang/Basic/RISCVVTypes.def"
}

if (Target.getTriple().isWasm() && Target.hasFeature("reference-types")) {
1425#define WASM_TYPE(Name, Id, SingletonId)                                       \
InitBuiltinType(SingletonId, BuiltinType::Id);
1427#include "clang/Basic/WebAssemblyReferenceTypes.def"
}

// Builtin type for __objc_yes and __objc_no
ObjCBuiltinBoolTy = (Target.useSignedCharForObjCBool() ?
                     SignedCharTy : BoolTy);

ObjCConstantStringType = QualType();

ObjCSuperType = QualType();

// void * type
if (LangOpts.OpenCLGenericAddressSpace) {
  auto Q = VoidTy.getQualifiers();
  Q.setAddressSpace(LangAS::opencl_generic);
  VoidPtrTy = getPointerType(getCanonicalType(
      getQualifiedType(VoidTy.getUnqualifiedType(), Q)));
} else {
  VoidPtrTy = getPointerType(VoidTy);
}

// nullptr type (C++0x 2.14.7)
InitBuiltinType(NullPtrTy,           BuiltinType::NullPtr);

// half type (OpenCL 6.1.1.1) / ARM NEON __fp16
InitBuiltinType(HalfTy, BuiltinType::Half);

InitBuiltinType(BFloat16Ty, BuiltinType::BFloat16);

// Builtin type used to help define __builtin_va_list.
VaListTagDecl = nullptr;

// MSVC predeclares struct _GUID, and we need it to create MSGuidDecls.
if (LangOpts.MicrosoftExt || LangOpts.Borland) {
  MSGuidTagDecl = buildImplicitRecord("_GUID");
  getTranslationUnitDecl()->addDecl(MSGuidTagDecl);
}
1464}

1466DiagnosticsEngine &ASTContext::getDiagnostics() const {
return SourceMgr.getDiagnostics();
1468}

1470AttrVec& ASTContext::getDeclAttrs(const Decl *D) {
AttrVec *&Result = DeclAttrs[D];
if (!Result) {
  void *Mem = Allocate(sizeof(AttrVec));
  Result = new (Mem) AttrVec;
}

return *Result;
1478}

1480/// Erase the attributes corresponding to the given declaration.
1481void ASTContext::eraseDeclAttrs(const Decl *D) {
llvm::DenseMap<const Decl*, AttrVec*>::iterator Pos = DeclAttrs.find(D);
if (Pos != DeclAttrs.end()) {
  Pos->second->~AttrVec();
  DeclAttrs.erase(Pos);
}
1487}

1489// FIXME: Remove ?
1490MemberSpecializationInfo *
1491ASTContext::getInstantiatedFromStaticDataMember(const VarDecl *Var) {
assert(Var->isStaticDataMember() && "Not a static data member")(static_cast <bool> (Var->isStaticDataMember() &&
 "Not a static data member") ? void (0) : __assert_fail ("Var->isStaticDataMember() && \"Not a static data member\""
, "clang/lib/AST/ASTContext.cpp", 1492, __extension__ __PRETTY_FUNCTION__
));
return getTemplateOrSpecializationInfo(Var)
    .dyn_cast<MemberSpecializationInfo *>();
1495}

1497ASTContext::TemplateOrSpecializationInfo
1498ASTContext::getTemplateOrSpecializationInfo(const VarDecl *Var) {
llvm::DenseMap<const VarDecl *, TemplateOrSpecializationInfo>::iterator Pos =
    TemplateOrInstantiation.find(Var);
if (Pos == TemplateOrInstantiation.end())
  return {};

return Pos->second;
1505}

1507void
1508ASTContext::setInstantiatedFromStaticDataMember(VarDecl *Inst, VarDecl *Tmpl,
                                              TemplateSpecializationKind TSK,
                                        SourceLocation PointOfInstantiation) {
assert(Inst->isStaticDataMember() && "Not a static data member")(static_cast <bool> (Inst->isStaticDataMember() &&
 "Not a static data member") ? void (0) : __assert_fail ("Inst->isStaticDataMember() && \"Not a static data member\""
, "clang/lib/AST/ASTContext.cpp", 1511, __extension__ __PRETTY_FUNCTION__
));
assert(Tmpl->isStaticDataMember() && "Not a static data member")(static_cast <bool> (Tmpl->isStaticDataMember() &&
 "Not a static data member") ? void (0) : __assert_fail ("Tmpl->isStaticDataMember() && \"Not a static data member\""
, "clang/lib/AST/ASTContext.cpp", 1512, __extension__ __PRETTY_FUNCTION__
));
setTemplateOrSpecializationInfo(Inst, new (*this) MemberSpecializationInfo(
                                          Tmpl, TSK, PointOfInstantiation));
1515}

1517void
1518ASTContext::setTemplateOrSpecializationInfo(VarDecl *Inst,
                                          TemplateOrSpecializationInfo TSI) {
assert(!TemplateOrInstantiation[Inst] &&(static_cast <bool> (!TemplateOrInstantiation[Inst] &&
 "Already noted what the variable was instantiated from") ? void
 (0) : __assert_fail ("!TemplateOrInstantiation[Inst] && \"Already noted what the variable was instantiated from\""
, "clang/lib/AST/ASTContext.cpp", 1521, __extension__ __PRETTY_FUNCTION__
))
       "Already noted what the variable was instantiated from")(static_cast <bool> (!TemplateOrInstantiation[Inst] &&
 "Already noted what the variable was instantiated from") ? void
 (0) : __assert_fail ("!TemplateOrInstantiation[Inst] && \"Already noted what the variable was instantiated from\""
, "clang/lib/AST/ASTContext.cpp", 1521, __extension__ __PRETTY_FUNCTION__
));
TemplateOrInstantiation[Inst] = TSI;
1523}

1525NamedDecl *
1526ASTContext::getInstantiatedFromUsingDecl(NamedDecl *UUD) {
auto Pos = InstantiatedFromUsingDecl.find(UUD);
if (Pos == InstantiatedFromUsingDecl.end())
  return nullptr;

return Pos->second;
1532}

1534void
1535ASTContext::setInstantiatedFromUsingDecl(NamedDecl *Inst, NamedDecl *Pattern) {
assert((isa<UsingDecl>(Pattern) ||(static_cast <bool> ((isa<UsingDecl>(Pattern) || isa
<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl
>(Pattern)) && "pattern decl is not a using decl")
 ? void (0) : __assert_fail ("(isa<UsingDecl>(Pattern) || isa<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl>(Pattern)) && \"pattern decl is not a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1539, __extension__ __PRETTY_FUNCTION__
))
        isa<UnresolvedUsingValueDecl>(Pattern) ||(static_cast <bool> ((isa<UsingDecl>(Pattern) || isa
<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl
>(Pattern)) && "pattern decl is not a using decl")
 ? void (0) : __assert_fail ("(isa<UsingDecl>(Pattern) || isa<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl>(Pattern)) && \"pattern decl is not a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1539, __extension__ __PRETTY_FUNCTION__
))
        isa<UnresolvedUsingTypenameDecl>(Pattern)) &&(static_cast <bool> ((isa<UsingDecl>(Pattern) || isa
<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl
>(Pattern)) && "pattern decl is not a using decl")
 ? void (0) : __assert_fail ("(isa<UsingDecl>(Pattern) || isa<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl>(Pattern)) && \"pattern decl is not a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1539, __extension__ __PRETTY_FUNCTION__
))
       "pattern decl is not a using decl")(static_cast <bool> ((isa<UsingDecl>(Pattern) || isa
<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl
>(Pattern)) && "pattern decl is not a using decl")
 ? void (0) : __assert_fail ("(isa<UsingDecl>(Pattern) || isa<UnresolvedUsingValueDecl>(Pattern) || isa<UnresolvedUsingTypenameDecl>(Pattern)) && \"pattern decl is not a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1539, __extension__ __PRETTY_FUNCTION__
));
assert((isa<UsingDecl>(Inst) ||(static_cast <bool> ((isa<UsingDecl>(Inst) || isa
<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl
>(Inst)) && "instantiation did not produce a using decl"
) ? void (0) : __assert_fail ("(isa<UsingDecl>(Inst) || isa<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl>(Inst)) && \"instantiation did not produce a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1543, __extension__ __PRETTY_FUNCTION__
))
        isa<UnresolvedUsingValueDecl>(Inst) ||(static_cast <bool> ((isa<UsingDecl>(Inst) || isa
<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl
>(Inst)) && "instantiation did not produce a using decl"
) ? void (0) : __assert_fail ("(isa<UsingDecl>(Inst) || isa<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl>(Inst)) && \"instantiation did not produce a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1543, __extension__ __PRETTY_FUNCTION__
))
        isa<UnresolvedUsingTypenameDecl>(Inst)) &&(static_cast <bool> ((isa<UsingDecl>(Inst) || isa
<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl
>(Inst)) && "instantiation did not produce a using decl"
) ? void (0) : __assert_fail ("(isa<UsingDecl>(Inst) || isa<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl>(Inst)) && \"instantiation did not produce a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1543, __extension__ __PRETTY_FUNCTION__
))
       "instantiation did not produce a using decl")(static_cast <bool> ((isa<UsingDecl>(Inst) || isa
<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl
>(Inst)) && "instantiation did not produce a using decl"
) ? void (0) : __assert_fail ("(isa<UsingDecl>(Inst) || isa<UnresolvedUsingValueDecl>(Inst) || isa<UnresolvedUsingTypenameDecl>(Inst)) && \"instantiation did not produce a using decl\""
, "clang/lib/AST/ASTContext.cpp", 1543, __extension__ __PRETTY_FUNCTION__
));
assert(!InstantiatedFromUsingDecl[Inst] && "pattern already exists")(static_cast <bool> (!InstantiatedFromUsingDecl[Inst] &&
 "pattern already exists") ? void (0) : __assert_fail ("!InstantiatedFromUsingDecl[Inst] && \"pattern already exists\""
, "clang/lib/AST/ASTContext.cpp", 1544, __extension__ __PRETTY_FUNCTION__
));
InstantiatedFromUsingDecl[Inst] = Pattern;
1546}

1548UsingEnumDecl *
1549ASTContext::getInstantiatedFromUsingEnumDecl(UsingEnumDecl *UUD) {
auto Pos = InstantiatedFromUsingEnumDecl.find(UUD);
if (Pos == InstantiatedFromUsingEnumDecl.end())
  return nullptr;

return Pos->second;
1555}

1557void ASTContext::setInstantiatedFromUsingEnumDecl(UsingEnumDecl *Inst,
                                                UsingEnumDecl *Pattern) {
assert(!InstantiatedFromUsingEnumDecl[Inst] && "pattern already exists")(static_cast <bool> (!InstantiatedFromUsingEnumDecl[Inst
] && "pattern already exists") ? void (0) : __assert_fail
 ("!InstantiatedFromUsingEnumDecl[Inst] && \"pattern already exists\""
, "clang/lib/AST/ASTContext.cpp", 1559, __extension__ __PRETTY_FUNCTION__
));
InstantiatedFromUsingEnumDecl[Inst] = Pattern;
1561}

1563UsingShadowDecl *
1564ASTContext::getInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst) {
llvm::DenseMap<UsingShadowDecl*, UsingShadowDecl*>::const_iterator Pos
  = InstantiatedFromUsingShadowDecl.find(Inst);
if (Pos == InstantiatedFromUsingShadowDecl.end())
  return nullptr;

return Pos->second;
1571}

1573void
1574ASTContext::setInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst,
                                             UsingShadowDecl *Pattern) {
assert(!InstantiatedFromUsingShadowDecl[Inst] && "pattern already exists")(static_cast <bool> (!InstantiatedFromUsingShadowDecl[Inst
] && "pattern already exists") ? void (0) : __assert_fail
 ("!InstantiatedFromUsingShadowDecl[Inst] && \"pattern already exists\""
, "clang/lib/AST/ASTContext.cpp", 1576, __extension__ __PRETTY_FUNCTION__
));
InstantiatedFromUsingShadowDecl[Inst] = Pattern;
1578}

1580FieldDecl *ASTContext::getInstantiatedFromUnnamedFieldDecl(FieldDecl *Field) {
llvm::DenseMap<FieldDecl *, FieldDecl *>::iterator Pos
  = InstantiatedFromUnnamedFieldDecl.find(Field);
if (Pos == InstantiatedFromUnnamedFieldDecl.end())
  return nullptr;

return Pos->second;
1587}

1589void ASTContext::setInstantiatedFromUnnamedFieldDecl(FieldDecl *Inst,
                                                   FieldDecl *Tmpl) {
assert(!Inst->getDeclName() && "Instantiated field decl is not unnamed")(static_cast <bool> (!Inst->getDeclName() &&
 "Instantiated field decl is not unnamed") ? void (0) : __assert_fail
 ("!Inst->getDeclName() && \"Instantiated field decl is not unnamed\""
, "clang/lib/AST/ASTContext.cpp", 1591, __extension__ __PRETTY_FUNCTION__
));
assert(!Tmpl->getDeclName() && "Template field decl is not unnamed")(static_cast <bool> (!Tmpl->getDeclName() &&
 "Template field decl is not unnamed") ? void (0) : __assert_fail
 ("!Tmpl->getDeclName() && \"Template field decl is not unnamed\""
, "clang/lib/AST/ASTContext.cpp", 1592, __extension__ __PRETTY_FUNCTION__
));
assert(!InstantiatedFromUnnamedFieldDecl[Inst] &&(static_cast <bool> (!InstantiatedFromUnnamedFieldDecl[
Inst] && "Already noted what unnamed field was instantiated from"
) ? void (0) : __assert_fail ("!InstantiatedFromUnnamedFieldDecl[Inst] && \"Already noted what unnamed field was instantiated from\""
, "clang/lib/AST/ASTContext.cpp", 1594, __extension__ __PRETTY_FUNCTION__
))
       "Already noted what unnamed field was instantiated from")(static_cast <bool> (!InstantiatedFromUnnamedFieldDecl[
Inst] && "Already noted what unnamed field was instantiated from"
) ? void (0) : __assert_fail ("!InstantiatedFromUnnamedFieldDecl[Inst] && \"Already noted what unnamed field was instantiated from\""
, "clang/lib/AST/ASTContext.cpp", 1594, __extension__ __PRETTY_FUNCTION__
));

InstantiatedFromUnnamedFieldDecl[Inst] = Tmpl;
1597}

1599ASTContext::overridden_cxx_method_iterator
1600ASTContext::overridden_methods_begin(const CXXMethodDecl *Method) const {
return overridden_methods(Method).begin();
1602}

1604ASTContext::overridden_cxx_method_iterator
1605ASTContext::overridden_methods_end(const CXXMethodDecl *Method) const {
return overridden_methods(Method).end();
1607}

1609unsigned
1610ASTContext::overridden_methods_size(const CXXMethodDecl *Method) const {
auto Range = overridden_methods(Method);
return Range.end() - Range.begin();
1613}

1615ASTContext::overridden_method_range
1616ASTContext::overridden_methods(const CXXMethodDecl *Method) const {
llvm::DenseMap<const CXXMethodDecl *, CXXMethodVector>::const_iterator Pos =
    OverriddenMethods.find(Method->getCanonicalDecl());
if (Pos == OverriddenMethods.end())
  return overridden_method_range(nullptr, nullptr);
return overridden_method_range(Pos->second.begin(), Pos->second.end());
1622}

1624void ASTContext::addOverriddenMethod(const CXXMethodDecl *Method,
                                   const CXXMethodDecl *Overridden) {
assert(Method->isCanonicalDecl() && Overridden->isCanonicalDecl())(static_cast <bool> (Method->isCanonicalDecl() &&
 Overridden->isCanonicalDecl()) ? void (0) : __assert_fail
 ("Method->isCanonicalDecl() && Overridden->isCanonicalDecl()"
, "clang/lib/AST/ASTContext.cpp", 1626, __extension__ __PRETTY_FUNCTION__
));
OverriddenMethods[Method].push_back(Overridden);
1628}

1630void ASTContext::getOverriddenMethods(
                    const NamedDecl *D,
                    SmallVectorImpl<const NamedDecl *> &Overridden) const {
assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "clang/lib/AST/ASTContext.cpp", 1633, __extension__ __PRETTY_FUNCTION__
));

if (const auto *CXXMethod = dyn_cast<CXXMethodDecl>(D)) {
  Overridden.append(overridden_methods_begin(CXXMethod),
                    overridden_methods_end(CXXMethod));
  return;
}

const auto *Method = dyn_cast<ObjCMethodDecl>(D);
if (!Method)
  return;

SmallVector<const ObjCMethodDecl *, 8> OverDecls;
Method->getOverriddenMethods(OverDecls);
Overridden.append(OverDecls.begin(), OverDecls.end());
1648}

1650void ASTContext::addedLocalImportDecl(ImportDecl *Import) {
assert(!Import->getNextLocalImport() &&(static_cast <bool> (!Import->getNextLocalImport() &&
 "Import declaration already in the chain") ? void (0) : __assert_fail
 ("!Import->getNextLocalImport() && \"Import declaration already in the chain\""
, "clang/lib/AST/ASTContext.cpp", 1652, __extension__ __PRETTY_FUNCTION__
))
       "Import declaration already in the chain")(static_cast <bool> (!Import->getNextLocalImport() &&
 "Import declaration already in the chain") ? void (0) : __assert_fail
 ("!Import->getNextLocalImport() && \"Import declaration already in the chain\""
, "clang/lib/AST/ASTContext.cpp", 1652, __extension__ __PRETTY_FUNCTION__
));
assert(!Import->isFromASTFile() && "Non-local import declaration")(static_cast <bool> (!Import->isFromASTFile() &&
 "Non-local import declaration") ? void (0) : __assert_fail (
"!Import->isFromASTFile() && \"Non-local import declaration\""
, "clang/lib/AST/ASTContext.cpp", 1653, __extension__ __PRETTY_FUNCTION__
));
if (!FirstLocalImport) {
  FirstLocalImport = Import;
  LastLocalImport = Import;
  return;
}

LastLocalImport->setNextLocalImport(Import);
LastLocalImport = Import;
1662}

1664//===----------------------------------------------------------------------===//
1665//                         Type Sizing and Analysis
1666//===----------------------------------------------------------------------===//

1668/// getFloatTypeSemantics - Return the APFloat 'semantics' for the specified
1669/// scalar floating point type.
1670const llvm::fltSemantics &ASTContext::getFloatTypeSemantics(QualType T) const {
switch (T->castAs<BuiltinType>()->getKind()) {
default:
  llvm_unreachable("Not a floating point type!")::llvm::llvm_unreachable_internal("Not a floating point type!"
, "clang/lib/AST/ASTContext.cpp", 1673);
case BuiltinType::BFloat16:
  return Target->getBFloat16Format();
case BuiltinType::Float16:
  return Target->getHalfFormat();
case BuiltinType::Half:
  // For HLSL, when the native half type is disabled, half will be treat as
  // float.
  if (getLangOpts().HLSL)
    if (getLangOpts().NativeHalfType)
      return Target->getHalfFormat();
    else
      return Target->getFloatFormat();
  else
    return Target->getHalfFormat();
case BuiltinType::Float:      return Target->getFloatFormat();
case BuiltinType::Double:     return Target->getDoubleFormat();
case BuiltinType::Ibm128:
  return Target->getIbm128Format();
case BuiltinType::LongDouble:
  if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice)
    return AuxTarget->getLongDoubleFormat();
  return Target->getLongDoubleFormat();
case BuiltinType::Float128:
  if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice)
    return AuxTarget->getFloat128Format();
  return Target->getFloat128Format();
}
1701}

1703CharUnits ASTContext::getDeclAlign(const Decl *D, bool ForAlignof) const {
unsigned Align = Target->getCharWidth();

bool UseAlignAttrOnly = false;
if (unsigned AlignFromAttr = D->getMaxAlignment()) {
  Align = AlignFromAttr;

  // __attribute__((aligned)) can increase or decrease alignment
  // *except* on a struct or struct member, where it only increases
  // alignment unless 'packed' is also specified.
  //
  // It is an error for alignas to decrease alignment, so we can
  // ignore that possibility;  Sema should diagnose it.
  if (isa<FieldDecl>(D)) {
    UseAlignAttrOnly = D->hasAttr<PackedAttr>() ||
      cast<FieldDecl>(D)->getParent()->hasAttr<PackedAttr>();
  } else {
    UseAlignAttrOnly = true;
  }
}
else if (isa<FieldDecl>(D))
    UseAlignAttrOnly =
      D->hasAttr<PackedAttr>() ||
      cast<FieldDecl>(D)->getParent()->hasAttr<PackedAttr>();

// If we're using the align attribute only, just ignore everything
// else about the declaration and its type.
if (UseAlignAttrOnly) {
  // do nothing
} else if (const auto *VD = dyn_cast<ValueDecl>(D)) {
  QualType T = VD->getType();
  if (const auto *RT = T->getAs<ReferenceType>()) {
    if (ForAlignof)
      T = RT->getPointeeType();
    else
      T = getPointerType(RT->getPointeeType());
  }
  QualType BaseT = getBaseElementType(T);
  if (T->isFunctionType())
    Align = getTypeInfoImpl(T.getTypePtr()).Align;
  else if (!BaseT->isIncompleteType()) {
    // Adjust alignments of declarations with array type by the
    // large-array alignment on the target.
    if (const ArrayType *arrayType = getAsArrayType(T)) {
      unsigned MinWidth = Target->getLargeArrayMinWidth();
      if (!ForAlignof && MinWidth) {
        if (isa<VariableArrayType>(arrayType))
          Align = std::max(Align, Target->getLargeArrayAlign());
        else if (isa<ConstantArrayType>(arrayType) &&
                 MinWidth <= getTypeSize(cast<ConstantArrayType>(arrayType)))
          Align = std::max(Align, Target->getLargeArrayAlign());
      }
    }
    Align = std::max(Align, getPreferredTypeAlign(T.getTypePtr()));
    if (BaseT.getQualifiers().hasUnaligned())
      Align = Target->getCharWidth();
    if (const auto *VD = dyn_cast<VarDecl>(D)) {
      if (VD->hasGlobalStorage() && !ForAlignof) {
        uint64_t TypeSize = getTypeSize(T.getTypePtr());
        Align = std::max(Align, getTargetInfo().getMinGlobalAlign(TypeSize));
      }
    }
  }

  // Fields can be subject to extra alignment constraints, like if
  // the field is packed, the struct is packed, or the struct has a
  // a max-field-alignment constraint (#pragma pack).  So calculate
  // the actual alignment of the field within the struct, and then
  // (as we're expected to) constrain that by the alignment of the type.
  if (const auto *Field = dyn_cast<FieldDecl>(VD)) {
    const RecordDecl *Parent = Field->getParent();
    // We can only produce a sensible answer if the record is valid.
    if (!Parent->isInvalidDecl()) {
      const ASTRecordLayout &Layout = getASTRecordLayout(Parent);

      // Start with the record's overall alignment.
      unsigned FieldAlign = toBits(Layout.getAlignment());

      // Use the GCD of that and the offset within the record.
      uint64_t Offset = Layout.getFieldOffset(Field->getFieldIndex());
      if (Offset > 0) {
        // Alignment is always a power of 2, so the GCD will be a power of 2,
        // which means we get to do this crazy thing instead of Euclid's.
        uint64_t LowBitOfOffset = Offset & (~Offset + 1);
        if (LowBitOfOffset < FieldAlign)
          FieldAlign = static_cast<unsigned>(LowBitOfOffset);
      }

      Align = std::min(Align, FieldAlign);
    }
  }
}

// Some targets have hard limitation on the maximum requestable alignment in
// aligned attribute for static variables.
const unsigned MaxAlignedAttr = getTargetInfo().getMaxAlignedAttribute();
const auto *VD = dyn_cast<VarDecl>(D);
if (MaxAlignedAttr && VD && VD->getStorageClass() == SC_Static)
  Align = std::min(Align, MaxAlignedAttr);

return toCharUnitsFromBits(Align);
1804}

1806CharUnits ASTContext::getExnObjectAlignment() const {
return toCharUnitsFromBits(Target->getExnObjectAlignment());
1808}

1810// getTypeInfoDataSizeInChars - Return the size of a type, in
1811// chars. If the type is a record, its data size is returned.  This is
1812// the size of the memcpy that's performed when assigning this type
1813// using a trivial copy/move assignment operator.
1814TypeInfoChars ASTContext::getTypeInfoDataSizeInChars(QualType T) const {
TypeInfoChars Info = getTypeInfoInChars(T);

// In C++, objects can sometimes be allocated into the tail padding
// of a base-class subobject.  We decide whether that's possible
// during class layout, so here we can just trust the layout results.
if (getLangOpts().CPlusPlus) {
  if (const auto *RT = T->getAs<RecordType>()) {
    const ASTRecordLayout &layout = getASTRecordLayout(RT->getDecl());
    Info.Width = layout.getDataSize();
  }
}

return Info;
1828}

1830/// getConstantArrayInfoInChars - Performing the computation in CharUnits
1831/// instead of in bits prevents overflowing the uint64_t for some large arrays.
1832TypeInfoChars
1833static getConstantArrayInfoInChars(const ASTContext &Context,
                                 const ConstantArrayType *CAT) {
TypeInfoChars EltInfo = Context.getTypeInfoInChars(CAT->getElementType());
uint64_t Size = CAT->getSize().getZExtValue();
assert((Size == 0 || static_cast<uint64_t>(EltInfo.Width.getQuantity()) <=(static_cast <bool> ((Size == 0 || static_cast<uint64_t
>(EltInfo.Width.getQuantity()) <= (uint64_t)(-1)/Size) &&
 "Overflow in array type char size evaluation") ? void (0) : __assert_fail
 ("(Size == 0 || static_cast<uint64_t>(EltInfo.Width.getQuantity()) <= (uint64_t)(-1)/Size) && \"Overflow in array type char size evaluation\""
, "clang/lib/AST/ASTContext.cpp", 1839, __extension__ __PRETTY_FUNCTION__
))
            (uint64_t)(-1)/Size) &&(static_cast <bool> ((Size == 0 || static_cast<uint64_t
>(EltInfo.Width.getQuantity()) <= (uint64_t)(-1)/Size) &&
 "Overflow in array type char size evaluation") ? void (0) : __assert_fail
 ("(Size == 0 || static_cast<uint64_t>(EltInfo.Width.getQuantity()) <= (uint64_t)(-1)/Size) && \"Overflow in array type char size evaluation\""
, "clang/lib/AST/ASTContext.cpp", 1839, __extension__ __PRETTY_FUNCTION__
))
       "Overflow in array type char size evaluation")(static_cast <bool> ((Size == 0 || static_cast<uint64_t
>(EltInfo.Width.getQuantity()) <= (uint64_t)(-1)/Size) &&
 "Overflow in array type char size evaluation") ? void (0) : __assert_fail
 ("(Size == 0 || static_cast<uint64_t>(EltInfo.Width.getQuantity()) <= (uint64_t)(-1)/Size) && \"Overflow in array type char size evaluation\""
, "clang/lib/AST/ASTContext.cpp", 1839, __extension__ __PRETTY_FUNCTION__
));
uint64_t Width = EltInfo.Width.getQuantity() * Size;
unsigned Align = EltInfo.Align.getQuantity();
if (!Context.getTargetInfo().getCXXABI().isMicrosoft() ||
    Context.getTargetInfo().getPointerWidth(LangAS::Default) == 64)
  Width = llvm::alignTo(Width, Align);
return TypeInfoChars(CharUnits::fromQuantity(Width),
                     CharUnits::fromQuantity(Align),
                     EltInfo.AlignRequirement);
1848}

1850TypeInfoChars ASTContext::getTypeInfoInChars(const Type *T) const {
if (const auto *CAT = dyn_cast<ConstantArrayType>(T))
  return getConstantArrayInfoInChars(*this, CAT);
TypeInfo Info = getTypeInfo(T);
return TypeInfoChars(toCharUnitsFromBits(Info.Width),
                     toCharUnitsFromBits(Info.Align), Info.AlignRequirement);
1856}

1858TypeInfoChars ASTContext::getTypeInfoInChars(QualType T) const {
return getTypeInfoInChars(T.getTypePtr());
1860}

1862bool ASTContext::isPromotableIntegerType(QualType T) const {
// HLSL doesn't promote all small integer types to int, it
// just uses the rank-based promotion rules for all types.
if (getLangOpts().HLSL)
  return false;

if (const auto *BT = T->getAs<BuiltinType>())
  switch (BT->getKind()) {
  case BuiltinType::Bool:
  case BuiltinType::Char_S:
  case BuiltinType::Char_U:
  case BuiltinType::SChar:
  case BuiltinType::UChar:
  case BuiltinType::Short:
  case BuiltinType::UShort:
  case BuiltinType::WChar_S:
  case BuiltinType::WChar_U:
  case BuiltinType::Char8:
  case BuiltinType::Char16:
  case BuiltinType::Char32:
    return true;
  default:
    return false;
  }

// Enumerated types are promotable to their compatible integer types
// (C99 6.3.1.1) a.k.a. its underlying type (C++ [conv.prom]p2).
if (const auto *ET = T->getAs<EnumType>()) {
  if (T->isDependentType() || ET->getDecl()->getPromotionType().isNull() ||
      ET->getDecl()->isScoped())
    return false;

  return true;
}

return false;
1898}

1900bool ASTContext::isAlignmentRequired(const Type *T) const {
return getTypeInfo(T).AlignRequirement != AlignRequirementKind::None;
1902}

1904bool ASTContext::isAlignmentRequired(QualType T) const {
return isAlignmentRequired(T.getTypePtr());
1906}

1908unsigned ASTContext::getTypeAlignIfKnown(QualType T,
                                       bool NeedsPreferredAlignment) const {
// An alignment on a typedef overrides anything else.
if (const auto *TT = T->getAs<TypedefType>())
  if (unsigned Align = TT->getDecl()->getMaxAlignment())
    return Align;

// If we have an (array of) complete type, we're done.
T = getBaseElementType(T);
if (!T->isIncompleteType())
  return NeedsPreferredAlignment ? getPreferredTypeAlign(T) : getTypeAlign(T);

// If we had an array type, its element type might be a typedef
// type with an alignment attribute.
if (const auto *TT = T->getAs<TypedefType>())
  if (unsigned Align = TT->getDecl()->getMaxAlignment())
    return Align;

// Otherwise, see if the declaration of the type had an attribute.
if (const auto *TT = T->getAs<TagType>())
  return TT->getDecl()->getMaxAlignment();

return 0;
1931}

1933TypeInfo ASTContext::getTypeInfo(const Type *T) const {
TypeInfoMap::iterator I = MemoizedTypeInfo.find(T);
if (I != MemoizedTypeInfo.end())
  return I->second;

// This call can invalidate MemoizedTypeInfo[T], so we need a second lookup.
TypeInfo TI = getTypeInfoImpl(T);
MemoizedTypeInfo[T] = TI;
return TI;
1942}

1944/// getTypeInfoImpl - Return the size of the specified type, in bits.  This
1945/// method does not work on incomplete types.
1946///
1947/// FIXME: Pointers into different addr spaces could have different sizes and
1948/// alignment requirements: getPointerInfo should take an AddrSpace, this
1949/// should take a QualType, &c.
1950TypeInfo ASTContext::getTypeInfoImpl(const Type *T) const {
uint64_t Width = 0;
unsigned Align = 8;
AlignRequirementKind AlignRequirement = AlignRequirementKind::None;
LangAS AS = LangAS::Default;
switch (T->getTypeClass()) {
1956#define TYPE(Class, Base)
1957#define ABSTRACT_TYPE(Class, Base)
1958#define NON_CANONICAL_TYPE(Class, Base)
1959#define DEPENDENT_TYPE(Class, Base) case Type::Class:
1960#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base)                       \
case Type::Class:                                                            \
assert(!T->isDependentType() && "should not see dependent types here")(static_cast <bool> (!T->isDependentType() &&
 "should not see dependent types here") ? void (0) : __assert_fail
 ("!T->isDependentType() && \"should not see dependent types here\""
, "clang/lib/AST/ASTContext.cpp", 1962, __extension__ __PRETTY_FUNCTION__
));      \
return getTypeInfo(cast<Class##Type>(T)->desugar().getTypePtr());
1964#include "clang/AST/TypeNodes.inc"
  llvm_unreachable("Should not see dependent types")::llvm::llvm_unreachable_internal("Should not see dependent types"
, "clang/lib/AST/ASTContext.cpp", 1965);

case Type::FunctionNoProto:
case Type::FunctionProto:
  // GCC extension: alignof(function) = 32 bits
  Width = 0;
  Align = 32;
  break;

case Type::IncompleteArray:
case Type::VariableArray:
case Type::ConstantArray: {
  // Model non-constant sized arrays as size zero, but track the alignment.
  uint64_t Size = 0;
  if (const auto *CAT = dyn_cast<ConstantArrayType>(T))
    Size = CAT->getSize().getZExtValue();

  TypeInfo EltInfo = getTypeInfo(cast<ArrayType>(T)->getElementType());
  assert((Size == 0 || EltInfo.Width <= (uint64_t)(-1) / Size) &&(static_cast <bool> ((Size == 0 || EltInfo.Width <= (
uint64_t)(-1) / Size) && "Overflow in array type bit size evaluation"
) ? void (0) : __assert_fail ("(Size == 0 || EltInfo.Width <= (uint64_t)(-1) / Size) && \"Overflow in array type bit size evaluation\""
, "clang/lib/AST/ASTContext.cpp", 1984, __extension__ __PRETTY_FUNCTION__
))
         "Overflow in array type bit size evaluation")(static_cast <bool> ((Size == 0 || EltInfo.Width <= (
uint64_t)(-1) / Size) && "Overflow in array type bit size evaluation"
) ? void (0) : __assert_fail ("(Size == 0 || EltInfo.Width <= (uint64_t)(-1) / Size) && \"Overflow in array type bit size evaluation\""
, "clang/lib/AST/ASTContext.cpp", 1984, __extension__ __PRETTY_FUNCTION__
));
  Width = EltInfo.Width * Size;
  Align = EltInfo.Align;
  AlignRequirement = EltInfo.AlignRequirement;
  if (!getTargetInfo().getCXXABI().isMicrosoft() ||
      getTargetInfo().getPointerWidth(LangAS::Default) == 64)
    Width = llvm::alignTo(Width, Align);
  break;
}

case Type::ExtVector:
case Type::Vector: {
  const auto *VT = cast<VectorType>(T);
  TypeInfo EltInfo = getTypeInfo(VT->getElementType());
  Width = VT->isExtVectorBoolType() ? VT->getNumElements()
                                    : EltInfo.Width * VT->getNumElements();
  // Enforce at least byte size and alignment.
  Width = std::max<unsigned>(8, Width);
  Align = std::max<unsigned>(8, Width);

  // If the alignment is not a power of 2, round up to the next power of 2.
  // This happens for non-power-of-2 length vectors.
  if (Align & (Align-1)) {
    Align = llvm::bit_ceil(Align);
    Width = llvm::alignTo(Width, Align);
  }
  // Adjust the alignment based on the target max.
  uint64_t TargetVectorAlign = Target->getMaxVectorAlign();
  if (TargetVectorAlign && TargetVectorAlign < Align)
    Align = TargetVectorAlign;
  if (VT->getVectorKind() == VectorType::SveFixedLengthDataVector)
    // Adjust the alignment for fixed-length SVE vectors. This is important
    // for non-power-of-2 vector lengths.
    Align = 128;
  else if (VT->getVectorKind() == VectorType::SveFixedLengthPredicateVector)
    // Adjust the alignment for fixed-length SVE predicates.
    Align = 16;
  else if (VT->getVectorKind() == VectorType::RVVFixedLengthDataVector)
    // Adjust the alignment for fixed-length RVV vectors.
    Align = 64;
  break;
}

case Type::ConstantMatrix: {
  const auto *MT = cast<ConstantMatrixType>(T);
  TypeInfo ElementInfo = getTypeInfo(MT->getElementType());
  // The internal layout of a matrix value is implementation defined.
  // Initially be ABI compatible with arrays with respect to alignment and
  // size.
  Width = ElementInfo.Width * MT->getNumRows() * MT->getNumColumns();
  Align = ElementInfo.Align;
  break;
}

case Type::Builtin:
  switch (cast<BuiltinType>(T)->getKind()) {
  default: llvm_unreachable("Unknown builtin type!")::llvm::llvm_unreachable_internal("Unknown builtin type!", "clang/lib/AST/ASTContext.cpp"
, 2040);
  case BuiltinType::Void:
    // GCC extension: alignof(void) = 8 bits.
    Width = 0;
    Align = 8;
    break;
  case BuiltinType::Bool:
    Width = Target->getBoolWidth();
    Align = Target->getBoolAlign();
    break;
  case BuiltinType::Char_S:
  case BuiltinType::Char_U:
  case BuiltinType::UChar:
  case BuiltinType::SChar:
  case BuiltinType::Char8:
    Width = Target->getCharWidth();
    Align = Target->getCharAlign();
    break;
  case BuiltinType::WChar_S:
  case BuiltinType::WChar_U:
    Width = Target->getWCharWidth();
    Align = Target->getWCharAlign();
    break;
  case BuiltinType::Char16:
    Width = Target->getChar16Width();
    Align = Target->getChar16Align();
    break;
  case BuiltinType::Char32:
    Width = Target->getChar32Width();
    Align = Target->getChar32Align();
    break;
  case BuiltinType::UShort:
  case BuiltinType::Short:
    Width = Target->getShortWidth();
    Align = Target->getShortAlign();
    break;
  case BuiltinType::UInt:
  case BuiltinType::Int:
    Width = Target->getIntWidth();
    Align = Target->getIntAlign();
    break;
  case BuiltinType::ULong:
  case BuiltinType::Long:
    Width = Target->getLongWidth();
    Align = Target->getLongAlign();
    break;
  case BuiltinType::ULongLong:
  case BuiltinType::LongLong:
    Width = Target->getLongLongWidth();
    Align = Target->getLongLongAlign();
    break;
  case BuiltinType::Int128:
  case BuiltinType::UInt128:
    Width = 128;
    Align = Target->getInt128Align();
    break;
  case BuiltinType::ShortAccum:
  case BuiltinType::UShortAccum:
  case BuiltinType::SatShortAccum:
  case BuiltinType::SatUShortAccum:
    Width = Target->getShortAccumWidth();
    Align = Target->getShortAccumAlign();
    break;
  case BuiltinType::Accum:
  case BuiltinType::UAccum:
  case BuiltinType::SatAccum:
  case BuiltinType::SatUAccum:
    Width = Target->getAccumWidth();
    Align = Target->getAccumAlign();
    break;
  case BuiltinType::LongAccum:
  case BuiltinType::ULongAccum:
  case BuiltinType::SatLongAccum:
  case BuiltinType::SatULongAccum:
    Width = Target->getLongAccumWidth();
    Align = Target->getLongAccumAlign();
    break;
  case BuiltinType::ShortFract:
  case BuiltinType::UShortFract:
  case BuiltinType::SatShortFract:
  case BuiltinType::SatUShortFract:
    Width = Target->getShortFractWidth();
    Align = Target->getShortFractAlign();
    break;
  case BuiltinType::Fract:
  case BuiltinType::UFract:
  case BuiltinType::SatFract:
  case BuiltinType::SatUFract:
    Width = Target->getFractWidth();
    Align = Target->getFractAlign();
    break;
  case BuiltinType::LongFract:
  case BuiltinType::ULongFract:
  case BuiltinType::SatLongFract:
  case BuiltinType::SatULongFract:
    Width = Target->getLongFractWidth();
    Align = Target->getLongFractAlign();
    break;
  case BuiltinType::BFloat16:
    if (Target->hasBFloat16Type()) {
      Width = Target->getBFloat16Width();
      Align = Target->getBFloat16Align();
    } else if ((getLangOpts().SYCLIsDevice ||
                (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice)) &&
               AuxTarget->hasBFloat16Type()) {
      Width = AuxTarget->getBFloat16Width();
      Align = AuxTarget->getBFloat16Align();
    }
    break;
  case BuiltinType::Float16:
  case BuiltinType::Half:
    if (Target->hasFloat16Type() || !getLangOpts().OpenMP ||
        !getLangOpts().OpenMPIsDevice) {
      Width = Target->getHalfWidth();
      Align = Target->getHalfAlign();
    } else {
      assert(getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice &&(static_cast <bool> (getLangOpts().OpenMP && getLangOpts
().OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/AST/ASTContext.cpp", 2157, __extension__ __PRETTY_FUNCTION__
))
             "Expected OpenMP device compilation.")(static_cast <bool> (getLangOpts().OpenMP && getLangOpts
().OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/AST/ASTContext.cpp", 2157, __extension__ __PRETTY_FUNCTION__
));
      Width = AuxTarget->getHalfWidth();
      Align = AuxTarget->getHalfAlign();
    }
    break;
  case BuiltinType::Float:
    Width = Target->getFloatWidth();
    Align = Target->getFloatAlign();
    break;
  case BuiltinType::Double:
    Width = Target->getDoubleWidth();
    Align = Target->getDoubleAlign();
    break;
  case BuiltinType::Ibm128:
    Width = Target->getIbm128Width();
    Align = Target->getIbm128Align();
    break;
  case BuiltinType::LongDouble:
    if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice &&
        (Target->getLongDoubleWidth() != AuxTarget->getLongDoubleWidth() ||
         Target->getLongDoubleAlign() != AuxTarget->getLongDoubleAlign())) {
      Width = AuxTarget->getLongDoubleWidth();
      Align = AuxTarget->getLongDoubleAlign();
    } else {
      Width = Target->getLongDoubleWidth();
      Align = Target->getLongDoubleAlign();
    }
    break;
  case BuiltinType::Float128:
    if (Target->hasFloat128Type() || !getLangOpts().OpenMP ||
        !getLangOpts().OpenMPIsDevice) {
      Width = Target->getFloat128Width();
      Align = Target->getFloat128Align();
    } else {
      assert(getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice &&(static_cast <bool> (getLangOpts().OpenMP && getLangOpts
().OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/AST/ASTContext.cpp", 2192, __extension__ __PRETTY_FUNCTION__
))
             "Expected OpenMP device compilation.")(static_cast <bool> (getLangOpts().OpenMP && getLangOpts
().OpenMPIsDevice && "Expected OpenMP device compilation."
) ? void (0) : __assert_fail ("getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && \"Expected OpenMP device compilation.\""
, "clang/lib/AST/ASTContext.cpp", 2192, __extension__ __PRETTY_FUNCTION__
));
      Width = AuxTarget->getFloat128Width();
      Align = AuxTarget->getFloat128Align();
    }
    break;
  case BuiltinType::NullPtr:
    // C++ 3.9.1p11: sizeof(nullptr_t) == sizeof(void*)
    Width = Target->getPointerWidth(LangAS::Default);
    Align = Target->getPointerAlign(LangAS::Default);
    break;
  case BuiltinType::ObjCId:
  case BuiltinType::ObjCClass:
  case BuiltinType::ObjCSel:
    Width = Target->getPointerWidth(LangAS::Default);
    Align = Target->getPointerAlign(LangAS::Default);
    break;
  case BuiltinType::OCLSampler:
  case BuiltinType::OCLEvent:
  case BuiltinType::OCLClkEvent:
  case BuiltinType::OCLQueue:
  case BuiltinType::OCLReserveID:
2213#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
  case BuiltinType::Id:
2215#include "clang/Basic/OpenCLImageTypes.def"
2216#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
case BuiltinType::Id:
2218#include "clang/Basic/OpenCLExtensionTypes.def"
    AS = Target->getOpenCLTypeAddrSpace(getOpenCLTypeKind(T));
    Width = Target->getPointerWidth(AS);
    Align = Target->getPointerAlign(AS);
    break;
  // The SVE types are effectively target-specific.  The length of an
  // SVE_VECTOR_TYPE is only known at runtime, but it is always a multiple
  // of 128 bits.  There is one predicate bit for each vector byte, so the
  // length of an SVE_PREDICATE_TYPE is always a multiple of 16 bits.
  //
  // Because the length is only known at runtime, we use a dummy value
  // of 0 for the static length.  The alignment values are those defined
  // by the Procedure Call Standard for the Arm Architecture.
2231#define SVE_VECTOR_TYPE(Name, MangledName, Id, SingletonId, NumEls, ElBits,    \
                      IsSigned, IsFP, IsBF)                                  \
case BuiltinType::Id:                                                        \
  Width = 0;                                                                 \
  Align = 128;                                                               \
  break;
2237#define SVE_PREDICATE_TYPE(Name, MangledName, Id, SingletonId, NumEls)         \
case BuiltinType::Id:                                                        \
  Width = 0;                                                                 \
  Align = 16;                                                                \
  break;
2242#define SVE_OPAQUE_TYPE(Name, MangledName, Id, SingletonId)                    \
case BuiltinType::Id:                                                        \
  Width = 0;                                                                 \
  Align = 16;                                                                \
  break;
2247#include "clang/Basic/AArch64SVEACLETypes.def"
2248#define PPC_VECTOR_TYPE(Name, Id, Size)                                        \
case BuiltinType::Id:                                                        \
  Width = Size;                                                              \
  Align = Size;                                                              \
  break;
2253#include "clang/Basic/PPCTypes.def"
2254#define RVV_VECTOR_TYPE(Name, Id, SingletonId, ElKind, ElBits, NF, IsSigned,   \
                      IsFP)                                                  \
case BuiltinType::Id:                                                        \
  Width = 0;                                                                 \
  Align = ElBits;                                                            \
  break;
2260#define RVV_PREDICATE_TYPE(Name, Id, SingletonId, ElKind)                      \
case BuiltinType::Id:                                                        \
  Width = 0;                                                                 \
  Align = 8;                                                                 \
  break;
2265#include "clang/Basic/RISCVVTypes.def"
2266#define WASM_TYPE(Name, Id, SingletonId)                                       \
case BuiltinType::Id:                                                        \
  Width = 0;                                                                 \
  Align = 8;                                                                 \
  break;
2271#include "clang/Basic/WebAssemblyReferenceTypes.def"
  }
  break;
case Type::ObjCObjectPointer:
  Width = Target->getPointerWidth(LangAS::Default);
  Align = Target->getPointerAlign(LangAS::Default);
  break;
case Type::BlockPointer:
  AS = cast<BlockPointerType>(T)->getPointeeType().getAddressSpace();
  Width = Target->getPointerWidth(AS);
  Align = Target->getPointerAlign(AS);
  break;
case Type::LValueReference:
case Type::RValueReference:
  // alignof and sizeof should never enter this code path here, so we go
  // the pointer route.
  AS = cast<ReferenceType>(T)->getPointeeType().getAddressSpace();
  Width = Target->getPointerWidth(AS);
  Align = Target->getPointerAlign(AS);
  break;
case Type::Pointer:
  AS = cast<PointerType>(T)->getPointeeType().getAddressSpace();
  Width = Target->getPointerWidth(AS);
  Align = Target->getPointerAlign(AS);
  break;
case Type::MemberPointer: {
  const auto *MPT = cast<MemberPointerType>(T);
  CXXABI::MemberPointerInfo MPI = ABI->getMemberPointerInfo(MPT);
  Width = MPI.Width;
  Align = MPI.Align;
  break;
}
case Type::Complex: {
  // Complex types have the same alignment as their elements, but twice the
  // size.
  TypeInfo EltInfo = getTypeInfo(cast<ComplexType>(T)->getElementType());
  Width = EltInfo.Width * 2;
  Align = EltInfo.Align;
  break;
}
case Type::ObjCObject:
  return getTypeInfo(cast<ObjCObjectType>(T)->getBaseType().getTypePtr());
case Type::Adjusted:
case Type::Decayed:
  return getTypeInfo(cast<AdjustedType>(T)->getAdjustedType().getTypePtr());
case Type::ObjCInterface: {
  const auto *ObjCI = cast<ObjCInterfaceType>(T);
  if (ObjCI->getDecl()->isInvalidDecl()) {
    Width = 8;
    Align = 8;
    break;
  }
  const ASTRecordLayout &Layout = getASTObjCInterfaceLayout(ObjCI->getDecl());
  Width = toBits(Layout.getSize());
  Align = toBits(Layout.getAlignment());
  break;
}
case Type::BitInt: {
  const auto *EIT = cast<BitIntType>(T);
  Align = std::clamp<unsigned>(llvm::PowerOf2Ceil(EIT->getNumBits()),
                               getCharWidth(), Target->getLongLongAlign());
  Width = llvm::alignTo(EIT->getNumBits(), Align);
  break;
}
case Type::Record:
case Type::Enum: {
  const auto *TT = cast<TagType>(T);

  if (TT->getDecl()->isInvalidDecl()) {
    Width = 8;
    Align = 8;
    break;
  }

  if (const auto *ET = dyn_cast<EnumType>(TT)) {
    const EnumDecl *ED = ET->getDecl();
    TypeInfo Info =
        getTypeInfo(ED->getIntegerType()->getUnqualifiedDesugaredType());
    if (unsigned AttrAlign = ED->getMaxAlignment()) {
      Info.Align = AttrAlign;
      Info.AlignRequirement = AlignRequirementKind::RequiredByEnum;
    }
    return Info;
  }

  const auto *RT = cast<RecordType>(TT);
  const RecordDecl *RD = RT->getDecl();
  const ASTRecordLayout &Layout = getASTRecordLayout(RD);
  Width = toBits(Layout.getSize());
  Align = toBits(Layout.getAlignment());
  AlignRequirement = RD->hasAttr<AlignedAttr>()
                         ? AlignRequirementKind::RequiredByRecord
                         : AlignRequirementKind::None;
  break;
}

case Type::SubstTemplateTypeParm:
  return getTypeInfo(cast<SubstTemplateTypeParmType>(T)->
                     getReplacementType().getTypePtr());

case Type::Auto:
case Type::DeducedTemplateSpecialization: {
  const auto *A = cast<DeducedType>(T);
  assert(!A->getDeducedType().isNull() &&(static_cast <bool> (!A->getDeducedType().isNull() &&
 "cannot request the size of an undeduced or dependent auto type"
) ? void (0) : __assert_fail ("!A->getDeducedType().isNull() && \"cannot request the size of an undeduced or dependent auto type\""
, "clang/lib/AST/ASTContext.cpp", 2375, __extension__ __PRETTY_FUNCTION__
))
         "cannot request the size of an undeduced or dependent auto type")(static_cast <bool> (!A->getDeducedType().isNull() &&
 "cannot request the size of an undeduced or dependent auto type"
) ? void (0) : __assert_fail ("!A->getDeducedType().isNull() && \"cannot request the size of an undeduced or dependent auto type\""
, "clang/lib/AST/ASTContext.cpp", 2375, __extension__ __PRETTY_FUNCTION__
));
  return getTypeInfo(A->getDeducedType().getTypePtr());
}

case Type::Paren:
  return getTypeInfo(cast<ParenType>(T)->getInnerType().getTypePtr());

case Type::MacroQualified:
  return getTypeInfo(
      cast<MacroQualifiedType>(T)->getUnderlyingType().getTypePtr());

case Type::ObjCTypeParam:
  return getTypeInfo(cast<ObjCTypeParamType>(T)->desugar().getTypePtr());

case Type::Using:
  return getTypeInfo(cast<UsingType>(T)->desugar().getTypePtr());

case Type::Typedef: {
  const auto *TT = cast<TypedefType>(T);
  TypeInfo Info = getTypeInfo(TT->desugar().getTypePtr());
  // If the typedef has an aligned attribute on it, it overrides any computed
  // alignment we have.  This violates the GCC documentation (which says that
  // attribute(aligned) can only round up) but matches its implementation.
  if (unsigned AttrAlign = TT->getDecl()->getMaxAlignment()) {
    Align = AttrAlign;
    AlignRequirement = AlignRequirementKind::RequiredByTypedef;
  } else {
    Align = Info.Align;
    AlignRequirement = Info.AlignRequirement;
  }
  Width = Info.Width;
  break;
}

case Type::Elaborated:
  return getTypeInfo(cast<ElaboratedType>(T)->getNamedType().getTypePtr());

case Type::Attributed:
  return getTypeInfo(
                cast<AttributedType>(T)->getEquivalentType().getTypePtr());

case Type::BTFTagAttributed:
  return getTypeInfo(
      cast<BTFTagAttributedType>(T)->getWrappedType().getTypePtr());

case Type::Atomic: {
  // Start with the base type information.
  TypeInfo Info = getTypeInfo(cast<AtomicType>(T)->getValueType());
  Width = Info.Width;
  Align = Info.Align;

  if (!Width) {
    // An otherwise zero-sized type should still generate an
    // atomic operation.
    Width = Target->getCharWidth();
    assert(Align)(static_cast <bool> (Align) ? void (0) : __assert_fail (
"Align", "clang/lib/AST/ASTContext.cpp", 2430, __extension__ __PRETTY_FUNCTION__
));
  } else if (Width <= Target->getMaxAtomicPromoteWidth()) {
    // If the size of the type doesn't exceed the platform's max
    // atomic promotion width, make the size and alignment more
    // favorable to atomic operations:

    // Round the size up to a power of 2.
    Width = llvm::bit_ceil(Width);

    // Set the alignment equal to the size.
    Align = static_cast<unsigned>(Width);
  }
}
break;

case Type::Pipe:
  Width = Target->getPointerWidth(LangAS::opencl_global);
  Align = Target->getPointerAlign(LangAS::opencl_global);
  break;
}

assert(llvm::isPowerOf2_32(Align) && "Alignment must be power of 2")(static_cast <bool> (llvm::isPowerOf2_32(Align) &&
 "Alignment must be power of 2") ? void (0) : __assert_fail (
"llvm::isPowerOf2_32(Align) && \"Alignment must be power of 2\""
, "clang/lib/AST/ASTContext.cpp", 2451, __extension__ __PRETTY_FUNCTION__
));
return TypeInfo(Width, Align, AlignRequirement);
2453}

2455unsigned ASTContext::getTypeUnadjustedAlign(const Type *T) const {
UnadjustedAlignMap::iterator I = MemoizedUnadjustedAlign.find(T);
if (I != MemoizedUnadjustedAlign.end())
  return I->second;

unsigned UnadjustedAlign;
if (const auto *RT = T->getAs<RecordType>()) {
  const RecordDecl *RD = RT->getDecl();
  const ASTRecordLayout &Layout = getASTRecordLayout(RD);
  UnadjustedAlign = toBits(Layout.getUnadjustedAlignment());
} else if (const auto *ObjCI = T->getAs<ObjCInterfaceType>()) {
  const ASTRecordLayout &Layout = getASTObjCInterfaceLayout(ObjCI->getDecl());
  UnadjustedAlign = toBits(Layout.getUnadjustedAlignment());
} else {
  UnadjustedAlign = getTypeAlign(T->getUnqualifiedDesugaredType());
}

MemoizedUnadjustedAlign[T] = UnadjustedAlign;
return UnadjustedAlign;
2474}

2476unsigned ASTContext::getOpenMPDefaultSimdAlign(QualType T) const {
unsigned SimdAlign = llvm::OpenMPIRBuilder::getOpenMPDefaultSimdAlign(
    getTargetInfo().getTriple(), Target->getTargetOpts().FeatureMap);
return SimdAlign;
2480}

2482/// toCharUnitsFromBits - Convert a size in bits to a size in characters.
2483CharUnits ASTContext::toCharUnitsFromBits(int64_t BitSize) const {
return CharUnits::fromQuantity(BitSize / getCharWidth());
2485}

2487/// toBits - Convert a size in characters to a size in characters.
2488int64_t ASTContext::toBits(CharUnits CharSize) const {
return CharSize.getQuantity() * getCharWidth();
2490}

2492/// getTypeSizeInChars - Return the size of the specified type, in characters.
2493/// This method does not work on incomplete types.
2494CharUnits ASTContext::getTypeSizeInChars(QualType T) const {
return getTypeInfoInChars(T).Width;
2496}
2497CharUnits ASTContext::getTypeSizeInChars(const Type *T) const {
return getTypeInfoInChars(T).Width;
2499}

2501/// getTypeAlignInChars - Return the ABI-specified alignment of a type, in
2502/// characters. This method does not work on incomplete types.
2503CharUnits ASTContext::getTypeAlignInChars(QualType T) const {
return toCharUnitsFromBits(getTypeAlign(T));
2505}
2506CharUnits ASTContext::getTypeAlignInChars(const Type *T) const {
return toCharUnitsFromBits(getTypeAlign(T));
2508}

2510/// getTypeUnadjustedAlignInChars - Return the ABI-specified alignment of a
2511/// type, in characters, before alignment adjustments. This method does
2512/// not work on incomplete types.
2513CharUnits ASTContext::getTypeUnadjustedAlignInChars(QualType T) const {
return toCharUnitsFromBits(getTypeUnadjustedAlign(T));
2515}
2516CharUnits ASTContext::getTypeUnadjustedAlignInChars(const Type *T) const {
return toCharUnitsFromBits(getTypeUnadjustedAlign(T));
2518}

2520/// getPreferredTypeAlign - Return the "preferred" alignment of the specified
2521/// type for the current target in bits.  This can be different than the ABI
2522/// alignment in cases where it is beneficial for performance or backwards
2523/// compatibility preserving to overalign a data type. (Note: despite the name,
2524/// the preferred alignment is ABI-impacting, and not an optimization.)
2525unsigned ASTContext::getPreferredTypeAlign(const Type *T) const {
TypeInfo TI = getTypeInfo(T);
unsigned ABIAlign = TI.Align;

T = T->getBaseElementTypeUnsafe();

// The preferred alignment of member pointers is that of a pointer.
if (T->isMemberPointerType())
  return getPreferredTypeAlign(getPointerDiffType().getTypePtr());

if (!Target->allowsLargerPreferedTypeAlignment())
  return ABIAlign;

if (const auto *RT = T->getAs<RecordType>()) {
  const RecordDecl *RD = RT->getDecl();

  // When used as part of a typedef, or together with a 'packed' attribute,
  // the 'aligned' attribute can be used to decrease alignment. Note that the
  // 'packed' case is already taken into consideration when computing the
  // alignment, we only need to handle the typedef case here.
  if (TI.AlignRequirement == AlignRequirementKind::RequiredByTypedef ||
      RD->isInvalidDecl())
    return ABIAlign;

  unsigned PreferredAlign = static_cast<unsigned>(
      toBits(getASTRecordLayout(RD).PreferredAlignment));
  assert(PreferredAlign >= ABIAlign &&(static_cast <bool> (PreferredAlign >= ABIAlign &&
 "PreferredAlign should be at least as large as ABIAlign.") ?
 void (0) : __assert_fail ("PreferredAlign >= ABIAlign && \"PreferredAlign should be at least as large as ABIAlign.\""
, "clang/lib/AST/ASTContext.cpp", 2552, __extension__ __PRETTY_FUNCTION__
))
         "PreferredAlign should be at least as large as ABIAlign.")(static_cast <bool> (PreferredAlign >= ABIAlign &&
 "PreferredAlign should be at least as large as ABIAlign.") ?
 void (0) : __assert_fail ("PreferredAlign >= ABIAlign && \"PreferredAlign should be at least as large as ABIAlign.\""
, "clang/lib/AST/ASTContext.cpp", 2552, __extension__ __PRETTY_FUNCTION__
));
  return PreferredAlign;
}

// Double (and, for targets supporting AIX `power` alignment, long double) and
// long long should be naturally aligned (despite requiring less alignment) if
// possible.
if (const auto *CT = T->getAs<ComplexType>())
  T = CT->getElementType().getTypePtr();
if (const auto *ET = T->getAs<EnumType>())
  T = ET->getDecl()->getIntegerType().getTypePtr();
if (T->isSpecificBuiltinType(BuiltinType::Double) ||
    T->isSpecificBuiltinType(BuiltinType::LongLong) ||
    T->isSpecificBuiltinType(BuiltinType::ULongLong) ||
    (T->isSpecificBuiltinType(BuiltinType::LongDouble) &&
     Target->defaultsToAIXPowerAlignment()))
  // Don't increase the alignment if an alignment attribute was specified on a
  // typedef declaration.
  if (!TI.isAlignRequired())
    return std::max(ABIAlign, (unsigned)getTypeSize(T));

return ABIAlign;
2574}

2576/// getTargetDefaultAlignForAttributeAligned - Return the default alignment
2577/// for __attribute__((aligned)) on this target, to be used if no alignment
2578/// value is specified.
2579unsigned ASTContext::getTargetDefaultAlignForAttributeAligned() const {
return getTargetInfo().getDefaultAlignForAttributeAligned();
2581}

2583/// getAlignOfGlobalVar - Return the alignment in bits that should be given
2584/// to a global variable of the specified type.
2585unsigned ASTContext::getAlignOfGlobalVar(QualType T) const {
uint64_t TypeSize = getTypeSize(T.getTypePtr());
return std::max(getPreferredTypeAlign(T),
                getTargetInfo().getMinGlobalAlign(TypeSize));
2589}

2591/// getAlignOfGlobalVarInChars - Return the alignment in characters that
2592/// should be given to a global variable of the specified type.
2593CharUnits ASTContext::getAlignOfGlobalVarInChars(QualType T) const {
return toCharUnitsFromBits(getAlignOfGlobalVar(T));
2595}

2597CharUnits ASTContext::getOffsetOfBaseWithVBPtr(const CXXRecordDecl *RD) const {
CharUnits Offset = CharUnits::Zero();
const ASTRecordLayout *Layout = &getASTRecordLayout(RD);
while (const CXXRecordDecl *Base = Layout->getBaseSharingVBPtr()) {
  Offset += Layout->getBaseClassOffset(Base);
  Layout = &getASTRecordLayout(Base);
}
return Offset;
2605}

2607CharUnits ASTContext::getMemberPointerPathAdjustment(const APValue &MP) const {
const ValueDecl *MPD = MP.getMemberPointerDecl();
CharUnits ThisAdjustment = CharUnits::Zero();
ArrayRef<const CXXRecordDecl*> Path = MP.getMemberPointerPath();
bool DerivedMember = MP.isMemberPointerToDerivedMember();
const CXXRecordDecl *RD = cast<CXXRecordDecl>(MPD->getDeclContext());
for (unsigned I = 0, N = Path.size(); I != N; ++I) {
  const CXXRecordDecl *Base = RD;
  const CXXRecordDecl *Derived = Path[I];
  if (DerivedMember)
    std::swap(Base, Derived);
  ThisAdjustment += getASTRecordLayout(Derived).getBaseClassOffset(Base);
  RD = Path[I];
}
if (DerivedMember)
  ThisAdjustment = -ThisAdjustment;
return ThisAdjustment;
2624}

2626/// DeepCollectObjCIvars -
2627/// This routine first collects all declared, but not synthesized, ivars in
2628/// super class and then collects all ivars, including those synthesized for
2629/// current class. This routine is used for implementation of current class
2630/// when all ivars, declared and synthesized are known.
2631void ASTContext::DeepCollectObjCIvars(const ObjCInterfaceDecl *OI,
                                    bool leafClass,
                          SmallVectorImpl<const ObjCIvarDecl*> &Ivars) const {
if (const ObjCInterfaceDecl *SuperClass = OI->getSuperClass())
  DeepCollectObjCIvars(SuperClass, false, Ivars);
if (!leafClass) {
  llvm::append_range(Ivars, OI->ivars());
} else {
  auto *IDecl = const_cast<ObjCInterfaceDecl *>(OI);
  for (const ObjCIvarDecl *Iv = IDecl->all_declared_ivar_begin(); Iv;
       Iv= Iv->getNextIvar())
    Ivars.push_back(Iv);
}
2644}

2646/// CollectInheritedProtocols - Collect all protocols in current class and
2647/// those inherited by it.
2648void ASTContext::CollectInheritedProtocols(const Decl *CDecl,
                        llvm::SmallPtrSet<ObjCProtocolDecl*, 8> &Protocols) {
if (const auto *OI = dyn_cast<ObjCInterfaceDecl>(CDecl)) {
  // We can use protocol_iterator here instead of
  // all_referenced_protocol_iterator since we are walking all categories.
  for (auto *Proto : OI->all_referenced_protocols()) {
    CollectInheritedProtocols(Proto, Protocols);
  }

  // Categories of this Interface.
  for (const auto *Cat : OI->visible_categories())
    CollectInheritedProtocols(Cat, Protocols);

  if (ObjCInterfaceDecl *SD = OI->getSuperClass())
    while (SD) {
      CollectInheritedProtocols(SD, Protocols);
      SD = SD->getSuperClass();
    }
} else if (const auto *OC = dyn_cast<ObjCCategoryDecl>(CDecl)) {
  for (auto *Proto : OC->protocols()) {
    CollectInheritedProtocols(Proto, Protocols);
  }
} else if (const auto *OP = dyn_cast<ObjCProtocolDecl>(CDecl)) {
  // Insert the protocol.
  if (!Protocols.insert(
        const_cast<ObjCProtocolDecl *>(OP->getCanonicalDecl())).second)
    return;

  for (auto *Proto : OP->protocols())
    CollectInheritedProtocols(Proto, Protocols);
}
2679}

2681static bool unionHasUniqueObjectRepresentations(const ASTContext &Context,
                                              const RecordDecl *RD,
                                              bool CheckIfTriviallyCopyable) {
assert(RD->isUnion() && "Must be union type")(static_cast <bool> (RD->isUnion() && "Must be union type"
) ? void (0) : __assert_fail ("RD->isUnion() && \"Must be union type\""
, "clang/lib/AST/ASTContext.cpp", 2684, __extension__ __PRETTY_FUNCTION__
));
CharUnits UnionSize = Context.getTypeSizeInChars(RD->getTypeForDecl());

for (const auto *Field : RD->fields()) {
  if (!Context.hasUniqueObjectRepresentations(Field->getType(),
                                              CheckIfTriviallyCopyable))
    return false;
  CharUnits FieldSize = Context.getTypeSizeInChars(Field->getType());
  if (FieldSize != UnionSize)
    return false;
}
return !RD->field_empty();
2696}

2698static int64_t getSubobjectOffset(const FieldDecl *Field,
                                const ASTContext &Context,
                                const clang::ASTRecordLayout & /*Layout*/) {
return Context.getFieldOffset(Field);
2702}

2704static int64_t getSubobjectOffset(const CXXRecordDecl *RD,
                                const ASTContext &Context,
                                const clang::ASTRecordLayout &Layout) {
return Context.toBits(Layout.getBaseClassOffset(RD));
2708}

2710static std::optional<int64_t>
2711structHasUniqueObjectRepresentations(const ASTContext &Context,
                                   const RecordDecl *RD,
                                   bool CheckIfTriviallyCopyable);

2715static std::optional<int64_t>
2716getSubobjectSizeInBits(const FieldDecl *Field, const ASTContext &Context,
                     bool CheckIfTriviallyCopyable) {
if (Field->getType()->isRecordType()) {
  const RecordDecl *RD = Field->getType()->getAsRecordDecl();
  if (!RD->isUnion())
    return structHasUniqueObjectRepresentations(Context, RD,
                                                CheckIfTriviallyCopyable);
}

// A _BitInt type may not be unique if it has padding bits
// but if it is a bitfield the padding bits are not used.
bool IsBitIntType = Field->getType()->isBitIntType();
if (!Field->getType()->isReferenceType() && !IsBitIntType &&
    !Context.hasUniqueObjectRepresentations(Field->getType(),
                                            CheckIfTriviallyCopyable))
  return std::nullopt;

int64_t FieldSizeInBits =
    Context.toBits(Context.getTypeSizeInChars(Field->getType()));
if (Field->isBitField()) {
  // If we have explicit padding bits, they don't contribute bits
  // to the actual object representation, so return 0.
  if (Field->isUnnamedBitfield())
    return 0;

  int64_t BitfieldSize = Field->getBitWidthValue(Context);
  if (IsBitIntType) {
    if ((unsigned)BitfieldSize >
        cast<BitIntType>(Field->getType())->getNumBits())
      return std::nullopt;
  } else if (BitfieldSize > FieldSizeInBits) {
    return std::nullopt;
  }
  FieldSizeInBits = BitfieldSize;
} else if (IsBitIntType && !Context.hasUniqueObjectRepresentations(
                               Field->getType(), CheckIfTriviallyCopyable)) {
  return std::nullopt;
}
return FieldSizeInBits;
2755}

2757static std::optional<int64_t>
2758getSubobjectSizeInBits(const CXXRecordDecl *RD, const ASTContext &Context,
                     bool CheckIfTriviallyCopyable) {
return structHasUniqueObjectRepresentations(Context, RD,
                                            CheckIfTriviallyCopyable);
2762}

2764template <typename RangeT>
2765static std::optional<int64_t> structSubobjectsHaveUniqueObjectRepresentations(
  const RangeT &Subobjects, int64_t CurOffsetInBits,
  const ASTContext &Context, const clang::ASTRecordLayout &Layout,
  bool CheckIfTriviallyCopyable) {
for (const auto *Subobject : Subobjects) {
  std::optional<int64_t> SizeInBits =
      getSubobjectSizeInBits(Subobject, Context, CheckIfTriviallyCopyable);
  if (!SizeInBits)
    return std::nullopt;
  if (*SizeInBits != 0) {
    int64_t Offset = getSubobjectOffset(Subobject, Context, Layout);
    if (Offset != CurOffsetInBits)
      return std::nullopt;
    CurOffsetInBits += *SizeInBits;
  }
}
return CurOffsetInBits;
2782}

2784static std::optional<int64_t>
2785structHasUniqueObjectRepresentations(const ASTContext &Context,
                                   const RecordDecl *RD,
                                   bool CheckIfTriviallyCopyable) {
assert(!RD->isUnion() && "Must be struct/class type")(static_cast <bool> (!RD->isUnion() && "Must be struct/class type"
) ? void (0) : __assert_fail ("!RD->isUnion() && \"Must be struct/class type\""
, "clang/lib/AST/ASTContext.cpp", 2788, __extension__ __PRETTY_FUNCTION__
));
const auto &Layout = Context.getASTRecordLayout(RD);

int64_t CurOffsetInBits = 0;
if (const auto *ClassDecl = dyn_cast<CXXRecordDecl>(RD)) {
  if (ClassDecl->isDynamicClass())
    return std::nullopt;

  SmallVector<CXXRecordDecl *, 4> Bases;
  for (const auto &Base : ClassDecl->bases()) {
    // Empty types can be inherited from, and non-empty types can potentially
    // have tail padding, so just make sure there isn't an error.
    Bases.emplace_back(Base.getType()->getAsCXXRecordDecl());
  }

  llvm::sort(Bases, [&](const CXXRecordDecl *L, const CXXRecordDecl *R) {
    return Layout.getBaseClassOffset(L) < Layout.getBaseClassOffset(R);
  });

  std::optional<int64_t> OffsetAfterBases =
      structSubobjectsHaveUniqueObjectRepresentations(
          Bases, CurOffsetInBits, Context, Layout, CheckIfTriviallyCopyable);
  if (!OffsetAfterBases)
    return std::nullopt;
  CurOffsetInBits = *OffsetAfterBases;
}

std::optional<int64_t> OffsetAfterFields =
    structSubobjectsHaveUniqueObjectRepresentations(
        RD->fields(), CurOffsetInBits, Context, Layout,
        CheckIfTriviallyCopyable);
if (!OffsetAfterFields)
  return std::nullopt;
CurOffsetInBits = *OffsetAfterFields;

return CurOffsetInBits;
2824}

2826bool ASTContext::hasUniqueObjectRepresentations(
  QualType Ty, bool CheckIfTriviallyCopyable) const {
// C++17 [meta.unary.prop]:
//   The predicate condition for a template specialization
//   has_unique_object_representations<T> shall be
//   satisfied if and only if:
//     (9.1) - T is trivially copyable, and
//     (9.2) - any two objects of type T with the same value have the same
//     object representation, where two objects
//   of array or non-union class type are considered to have the same value
//   if their respective sequences of
//   direct subobjects have the same values, and two objects of union type
//   are considered to have the same
//   value if they have the same active member and the corresponding members
//   have the same value.
//   The set of scalar types for which this condition holds is
//   implementation-defined. [ Note: If a type has padding
//   bits, the condition does not hold; otherwise, the condition holds true
//   for unsigned integral types. -- end note ]
assert(!Ty.isNull() && "Null QualType sent to unique object rep check")(static_cast <bool> (!Ty.isNull() && "Null QualType sent to unique object rep check"
) ? void (0) : __assert_fail ("!Ty.isNull() && \"Null QualType sent to unique object rep check\""
, "clang/lib/AST/ASTContext.cpp", 2845, __extension__ __PRETTY_FUNCTION__
));

// Arrays are unique only if their element type is unique.
if (Ty->isArrayType())
  return hasUniqueObjectRepresentations(getBaseElementType(Ty),
                                        CheckIfTriviallyCopyable);

// (9.1) - T is trivially copyable...
if (CheckIfTriviallyCopyable && !Ty.isTriviallyCopyableType(*this))
  return false;

// All integrals and enums are unique.
if (Ty->isIntegralOrEnumerationType()) {
  // Except _BitInt types that have padding bits.
  if (const auto *BIT = Ty->getAs<BitIntType>())
    return getTypeSize(BIT) == BIT->getNumBits();

  return true;
}

// All other pointers are unique.
if (Ty->isPointerType())
  return true;

if (const auto *MPT = Ty->getAs<MemberPointerType>())
  return !ABI->getMemberPointerInfo(MPT).HasPadding;

if (Ty->isRecordType()) {
  const RecordDecl *Record = Ty->castAs<RecordType>()->getDecl();

  if (Record->isInvalidDecl())
    return false;

  if (Record->isUnion())
    return unionHasUniqueObjectRepresentations(*this, Record,
                                               CheckIfTriviallyCopyable);

  std::optional<int64_t> StructSize = structHasUniqueObjectRepresentations(
      *this, Record, CheckIfTriviallyCopyable);

  return StructSize && *StructSize == static_cast<int64_t>(getTypeSize(Ty));
}

// FIXME: More cases to handle here (list by rsmith):
// vectors (careful about, eg, vector of 3 foo)
// _Complex int and friends
// _Atomic T
// Obj-C block pointers
// Obj-C object pointers
// and perhaps OpenCL's various builtin types (pipe, sampler_t, event_t,
// clk_event_t, queue_t, reserve_id_t)
// There're also Obj-C class types and the Obj-C selector type, but I think it
// makes sense for those to return false here.

return false;
2900}

2902unsigned ASTContext::CountNonClassIvars(const ObjCInterfaceDecl *OI) const {
unsigned count = 0;
// Count ivars declared in class extension.
for (const auto *Ext : OI->known_extensions())
  count += Ext->ivar_size();

// Count ivar defined in this class's implementation.  This
// includes synthesized ivars.
if (ObjCImplementationDecl *ImplDecl = OI->getImplementation())
  count += ImplDecl->ivar_size();

return count;
2914}

2916bool ASTContext::isSentinelNullExpr(const Expr *E) {
if (!E)
  return false;

// nullptr_t is always treated as null.
if (E->getType()->isNullPtrType()) return true;

if (E->getType()->isAnyPointerType() &&
    E->IgnoreParenCasts()->isNullPointerConstant(*this,
                                              Expr::NPC_ValueDependentIsNull))
  return true;

// Unfortunately, __null has type 'int'.
if (isa<GNUNullExpr>(E)) return true;

return false;
2932}

2934/// Get the implementation of ObjCInterfaceDecl, or nullptr if none
2935/// exists.
2936ObjCImplementationDecl *ASTContext::getObjCImplementation(ObjCInterfaceDecl *D) {
llvm::DenseMap<ObjCContainerDecl*, ObjCImplDecl*>::iterator
  I = ObjCImpls.find(D);
if (I != ObjCImpls.end())
  return cast<ObjCImplementationDecl>(I->second);
return nullptr;
2942}

2944/// Get the implementation of ObjCCategoryDecl, or nullptr if none
2945/// exists.
2946ObjCCategoryImplDecl *ASTContext::getObjCImplementation(ObjCCategoryDecl *D) {
llvm::DenseMap<ObjCContainerDecl*, ObjCImplDecl*>::iterator
  I = ObjCImpls.find(D);
if (I != ObjCImpls.end())
  return cast<ObjCCategoryImplDecl>(I->second);
return nullptr;
2952}

2954/// Set the implementation of ObjCInterfaceDecl.
2955void ASTContext::setObjCImplementation(ObjCInterfaceDecl *IFaceD,
                         ObjCImplementationDecl *ImplD) {
assert(IFaceD && ImplD && "Passed null params")(static_cast <bool> (IFaceD && ImplD &&
 "Passed null params") ? void (0) : __assert_fail ("IFaceD && ImplD && \"Passed null params\""
, "clang/lib/AST/ASTContext.cpp", 2957, __extension__ __PRETTY_FUNCTION__
));
ObjCImpls[IFaceD] = ImplD;
2959}

2961/// Set the implementation of ObjCCategoryDecl.
2962void ASTContext::setObjCImplementation(ObjCCategoryDecl *CatD,
                         ObjCCategoryImplDecl *ImplD) {
assert(CatD && ImplD && "Passed null params")(static_cast <bool> (CatD && ImplD && "Passed null params"
) ? void (0) : __assert_fail ("CatD && ImplD && \"Passed null params\""
, "clang/lib/AST/ASTContext.cpp", 2964, __extension__ __PRETTY_FUNCTION__
));
ObjCImpls[CatD] = ImplD;
2966}

2968const ObjCMethodDecl *
2969ASTContext::getObjCMethodRedeclaration(const ObjCMethodDecl *MD) const {
return ObjCMethodRedecls.lookup(MD);
2971}

2973void ASTContext::setObjCMethodRedeclaration(const ObjCMethodDecl *MD,
                                          const ObjCMethodDecl *Redecl) {
assert(!getObjCMethodRedeclaration(MD) && "MD already has a redeclaration")(static_cast <bool> (!getObjCMethodRedeclaration(MD) &&
 "MD already has a redeclaration") ? void (0) : __assert_fail
 ("!getObjCMethodRedeclaration(MD) && \"MD already has a redeclaration\""
, "clang/lib/AST/ASTContext.cpp", 2975, __extension__ __PRETTY_FUNCTION__
));
ObjCMethodRedecls[MD] = Redecl;
2977}

2979const ObjCInterfaceDecl *ASTContext::getObjContainingInterface(
                                            const NamedDecl *ND) const {
if (const auto *ID = dyn_cast<ObjCInterfaceDecl>(ND->getDeclContext()))
  return ID;
if (const auto *CD = dyn_cast<ObjCCategoryDecl>(ND->getDeclContext()))
  return CD->getClassInterface();
if (const auto *IMD = dyn_cast<ObjCImplDecl>(ND->getDeclContext()))
  return IMD->getClassInterface();

return nullptr;
2989}

2991/// Get the copy initialization expression of VarDecl, or nullptr if
2992/// none exists.
2993BlockVarCopyInit ASTContext::getBlockVarCopyInit(const VarDecl *VD) const {
assert(VD && "Passed null params")(static_cast <bool> (VD && "Passed null params"
) ? void (0) : __assert_fail ("VD && \"Passed null params\""
, "clang/lib/AST/ASTContext.cpp", 2994, __extension__ __PRETTY_FUNCTION__
));
assert(VD->hasAttr<BlocksAttr>() &&(static_cast <bool> (VD->hasAttr<BlocksAttr>()
 && "getBlockVarCopyInits - not __block var") ? void (
0) : __assert_fail ("VD->hasAttr<BlocksAttr>() && \"getBlockVarCopyInits - not __block var\""
, "clang/lib/AST/ASTContext.cpp", 2996, __extension__ __PRETTY_FUNCTION__
))
       "getBlockVarCopyInits - not __block var")(static_cast <bool> (VD->hasAttr<BlocksAttr>()
 && "getBlockVarCopyInits - not __block var") ? void (
0) : __assert_fail ("VD->hasAttr<BlocksAttr>() && \"getBlockVarCopyInits - not __block var\""
, "clang/lib/AST/ASTContext.cpp", 2996, __extension__ __PRETTY_FUNCTION__
));
auto I = BlockVarCopyInits.find(VD);
if (I != BlockVarCopyInits.end())
  return I->second;
return {nullptr, false};
3001}

3003/// Set the copy initialization expression of a block var decl.
3004void ASTContext::setBlockVarCopyInit(const VarDecl*VD, Expr *CopyExpr,
                                   bool CanThrow) {
assert(VD && CopyExpr && "Passed null params")(static_cast <bool> (VD && CopyExpr && "Passed null params"
) ? void (0) : __assert_fail ("VD && CopyExpr && \"Passed null params\""
, "clang/lib/AST/ASTContext.cpp", 3006, __extension__ __PRETTY_FUNCTION__
));
assert(VD->hasAttr<BlocksAttr>() &&(static_cast <bool> (VD->hasAttr<BlocksAttr>()
 && "setBlockVarCopyInits - not __block var") ? void (
0) : __assert_fail ("VD->hasAttr<BlocksAttr>() && \"setBlockVarCopyInits - not __block var\""
, "clang/lib/AST/ASTContext.cpp", 3008, __extension__ __PRETTY_FUNCTION__
))
       "setBlockVarCopyInits - not __block var")(static_cast <bool> (VD->hasAttr<BlocksAttr>()
 && "setBlockVarCopyInits - not __block var") ? void (
0) : __assert_fail ("VD->hasAttr<BlocksAttr>() && \"setBlockVarCopyInits - not __block var\""
, "clang/lib/AST/ASTContext.cpp", 3008, __extension__ __PRETTY_FUNCTION__
));
BlockVarCopyInits[VD].setExprAndFlag(CopyExpr, CanThrow);
3010}

3012TypeSourceInfo *ASTContext::CreateTypeSourceInfo(QualType T,
                                               unsigned DataSize) const {
if (!DataSize)
  DataSize = TypeLoc::getFullDataSizeForType(T);
else
  assert(DataSize == TypeLoc::getFullDataSizeForType(T) &&(static_cast <bool> (DataSize == TypeLoc::getFullDataSizeForType
(T) && "incorrect data size provided to CreateTypeSourceInfo!"
) ? void (0) : __assert_fail ("DataSize == TypeLoc::getFullDataSizeForType(T) && \"incorrect data size provided to CreateTypeSourceInfo!\""
, "clang/lib/AST/ASTContext.cpp", 3018, __extension__ __PRETTY_FUNCTION__
))
         "incorrect data size provided to CreateTypeSourceInfo!")(static_cast <bool> (DataSize == TypeLoc::getFullDataSizeForType
(T) && "incorrect data size provided to CreateTypeSourceInfo!"
) ? void (0) : __assert_fail ("DataSize == TypeLoc::getFullDataSizeForType(T) && \"incorrect data size provided to CreateTypeSourceInfo!\""
, "clang/lib/AST/ASTContext.cpp", 3018, __extension__ __PRETTY_FUNCTION__
));

auto *TInfo =
  (TypeSourceInfo*)BumpAlloc.Allocate(sizeof(TypeSourceInfo) + DataSize, 8);
new (TInfo) TypeSourceInfo(T);
return TInfo;
3024}

3026TypeSourceInfo *ASTContext::getTrivialTypeSourceInfo(QualType T,
                                                   SourceLocation L) const {
TypeSourceInfo *DI = CreateTypeSourceInfo(T);
DI->getTypeLoc().initialize(const_cast<ASTContext &>(*this), L);
return DI;
3031}

3033const ASTRecordLayout &
3034ASTContext::getASTObjCInterfaceLayout(const ObjCInterfaceDecl *D) const {
return getObjCLayout(D, nullptr);
3036}

3038const ASTRecordLayout &
3039ASTContext::getASTObjCImplementationLayout(
                                      const ObjCImplementationDecl *D) const {
return getObjCLayout(D->getClassInterface(), D);
3042}

3044static auto getCanonicalTemplateArguments(const ASTContext &C,
                                        ArrayRef<TemplateArgument> Args,
                                        bool &AnyNonCanonArgs) {
SmallVector<TemplateArgument, 16> CanonArgs(Args);
for (auto &Arg : CanonArgs) {
  TemplateArgument OrigArg = Arg;
  Arg = C.getCanonicalTemplateArgument(Arg);
  AnyNonCanonArgs |= !Arg.structurallyEquals(OrigArg);
}
return CanonArgs;
3054}

3056//===----------------------------------------------------------------------===//
3057//                   Type creation/memoization methods
3058//===----------------------------------------------------------------------===//

3060QualType
3061ASTContext::getExtQualType(const Type *baseType, Qualifiers quals) const {
unsigned fastQuals = quals.getFastQualifiers();
quals.removeFastQualifiers();

// Check if we've already instantiated this type.
llvm::FoldingSetNodeID ID;
ExtQuals::Profile(ID, baseType, quals);
void *insertPos = nullptr;
if (ExtQuals *eq = ExtQualNodes.FindNodeOrInsertPos(ID, insertPos)) {
  assert(eq->getQualifiers() == quals)(static_cast <bool> (eq->getQualifiers() == quals) ?
 void (0) : __assert_fail ("eq->getQualifiers() == quals",
 "clang/lib/AST/ASTContext.cpp", 3070, __extension__ __PRETTY_FUNCTION__
));
  return QualType(eq, fastQuals);
}

// If the base type is not canonical, make the appropriate canonical type.
QualType canon;
if (!baseType->isCanonicalUnqualified()) {
  SplitQualType canonSplit = baseType->getCanonicalTypeInternal().split();
  canonSplit.Quals.addConsistentQualifiers(quals);
  canon = getExtQualType(canonSplit.Ty, canonSplit.Quals);

  // Re-find the insert position.
  (void) ExtQualNodes.FindNodeOrInsertPos(ID, insertPos);
}

auto *eq = new (*this, TypeAlignment) ExtQuals(baseType, canon, quals);
ExtQualNodes.InsertNode(eq, insertPos);
return QualType(eq, fastQuals);
3088}

3090QualType ASTContext::getAddrSpaceQualType(QualType T,
                                        LangAS AddressSpace) const {
QualType CanT = getCanonicalType(T);
if (CanT.getAddressSpace() == AddressSpace)
  return T;

// If we are composing extended qualifiers together, merge together
// into one ExtQuals node.
QualifierCollector Quals;
const Type *TypeNode = Quals.strip(T);

// If this type already has an address space specified, it cannot get
// another one.
assert(!Quals.hasAddressSpace() &&(static_cast <bool> (!Quals.hasAddressSpace() &&
 "Type cannot be in multiple addr spaces!") ? void (0) : __assert_fail
 ("!Quals.hasAddressSpace() && \"Type cannot be in multiple addr spaces!\""
, "clang/lib/AST/ASTContext.cpp", 3104, __extension__ __PRETTY_FUNCTION__
))
       "Type cannot be in multiple addr spaces!")(static_cast <bool> (!Quals.hasAddressSpace() &&
 "Type cannot be in multiple addr spaces!") ? void (0) : __assert_fail
 ("!Quals.hasAddressSpace() && \"Type cannot be in multiple addr spaces!\""
, "clang/lib/AST/ASTContext.cpp", 3104, __extension__ __PRETTY_FUNCTION__
));
Quals.addAddressSpace(AddressSpace);

return getExtQualType(TypeNode, Quals);
3108}

3110QualType ASTContext::removeAddrSpaceQualType(QualType T) const {
// If the type is not qualified with an address space, just return it
// immediately.
if (!T.hasAddressSpace())
  return T;

// If we are composing extended qualifiers together, merge together
// into one ExtQuals node.
QualifierCollector Quals;
const Type *TypeNode;

while (T.hasAddressSpace()) {
  TypeNode = Quals.strip(T);

  // If the type no longer has an address space after stripping qualifiers,
  // jump out.
  if (!QualType(TypeNode, 0).hasAddressSpace())
    break;

  // There might be sugar in the way. Strip it and try again.
  T = T.getSingleStepDesugaredType(*this);
}

Quals.removeAddressSpace();

// Removal of the address space can mean there are no longer any
// non-fast qualifiers, so creating an ExtQualType isn't possible (asserts)
// or required.
if (Quals.hasNonFastQualifiers())
  return getExtQualType(TypeNode, Quals);
else
  return QualType(TypeNode, Quals.getFastQualifiers());
3142}

3144QualType ASTContext::getObjCGCQualType(QualType T,
                                     Qualifiers::GC GCAttr) const {
QualType CanT = getCanonicalType(T);
if (CanT.getObjCGCAttr() == GCAttr)
  return T;

if (const auto *ptr = T->getAs<PointerType>()) {
  QualType Pointee = ptr->getPointeeType();
  if (Pointee->isAnyPointerType()) {
    QualType ResultType = getObjCGCQualType(Pointee, GCAttr);
    return getPointerType(ResultType);
  }
}

// If we are composing extended qualifiers together, merge together
// into one ExtQuals node.
QualifierCollector Quals;
const Type *TypeNode = Quals.strip(T);

// If this type already has an ObjCGC specified, it cannot get
// another one.
assert(!Quals.hasObjCGCAttr() &&(static_cast <bool> (!Quals.hasObjCGCAttr() && "Type cannot have multiple ObjCGCs!"
) ? void (0) : __assert_fail ("!Quals.hasObjCGCAttr() && \"Type cannot have multiple ObjCGCs!\""
, "clang/lib/AST/ASTContext.cpp", 3166, __extension__ __PRETTY_FUNCTION__
))
       "Type cannot have multiple ObjCGCs!")(static_cast <bool> (!Quals.hasObjCGCAttr() && "Type cannot have multiple ObjCGCs!"
) ? void (0) : __assert_fail ("!Quals.hasObjCGCAttr() && \"Type cannot have multiple ObjCGCs!\""
, "clang/lib/AST/ASTContext.cpp", 3166, __extension__ __PRETTY_FUNCTION__
));
Quals.addObjCGCAttr(GCAttr);

return getExtQualType(TypeNode, Quals);
3170}

3172QualType ASTContext::removePtrSizeAddrSpace(QualType T) const {
if (const PointerType *Ptr = T->getAs<PointerType>()) {
  QualType Pointee = Ptr->getPointeeType();
  if (isPtrSizeAddressSpace(Pointee.getAddressSpace())) {
    return getPointerType(removeAddrSpaceQualType(Pointee));
  }
}
return T;
3180}

3182const FunctionType *ASTContext::adjustFunctionType(const FunctionType *T,
                                                 FunctionType::ExtInfo Info) {
if (T->getExtInfo() == Info)
  return T;

QualType Result;
if (const auto *FNPT = dyn_cast<FunctionNoProtoType>(T)) {
  Result = getFunctionNoProtoType(FNPT->getReturnType(), Info);
} else {
  const auto *FPT = cast<FunctionProtoType>(T);
  FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo();
  EPI.ExtInfo = Info;
  Result = getFunctionType(FPT->getReturnType(), FPT->getParamTypes(), EPI);
}

return cast<FunctionType>(Result.getTypePtr());
3198}

3200void ASTContext::adjustDeducedFunctionResultType(FunctionDecl *FD,
                                               QualType ResultType) {
FD = FD->getMostRecentDecl();
while (true) {
  const auto *FPT = FD->getType()->castAs<FunctionProtoType>();
  FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo();
  FD->setType(getFunctionType(ResultType, FPT->getParamTypes(), EPI));
  if (FunctionDecl *Next = FD->getPreviousDecl())
    FD = Next;
  else
    break;
}
if (ASTMutationListener *L = getASTMutationListener())
  L->DeducedReturnType(FD, ResultType);
3214}

3216/// Get a function type and produce the equivalent function type with the
3217/// specified exception specification. Type sugar that can be present on a
3218/// declaration of a function with an exception specification is permitted
3219/// and preserved. Other type sugar (for instance, typedefs) is not.
3220QualType ASTContext::getFunctionTypeWithExceptionSpec(
  QualType Orig, const FunctionProtoType::ExceptionSpecInfo &ESI) const {
// Might have some parens.
if (const auto *PT = dyn_cast<ParenType>(Orig))
  return getParenType(
      getFunctionTypeWithExceptionSpec(PT->getInnerType(), ESI));

// Might be wrapped in a macro qualified type.
if (const auto *MQT = dyn_cast<MacroQualifiedType>(Orig))
  return getMacroQualifiedType(
      getFunctionTypeWithExceptionSpec(MQT->getUnderlyingType(), ESI),
      MQT->getMacroIdentifier());

// Might have a calling-convention attribute.
if (const auto *AT = dyn_cast<AttributedType>(Orig))
  return getAttributedType(
      AT->getAttrKind(),
      getFunctionTypeWithExceptionSpec(AT->getModifiedType(), ESI),
      getFunctionTypeWithExceptionSpec(AT->getEquivalentType(), ESI));

// Anything else must be a function type. Rebuild it with the new exception
// specification.
const auto *Proto = Orig->castAs<FunctionProtoType>();
return getFunctionType(
    Proto->getReturnType(), Proto->getParamTypes(),
    Proto->getExtProtoInfo().withExceptionSpec(ESI));
3246}

3248bool ASTContext::hasSameFunctionTypeIgnoringExceptionSpec(QualType T,
                                                        QualType U) const {
return hasSameType(T, U) ||
       (getLangOpts().CPlusPlus17 &&
        hasSameType(getFunctionTypeWithExceptionSpec(T, EST_None),
                    getFunctionTypeWithExceptionSpec(U, EST_None)));
3254}

3256QualType ASTContext::getFunctionTypeWithoutPtrSizes(QualType T) {
if (const auto *Proto = T->getAs<FunctionProtoType>()) {
  QualType RetTy = removePtrSizeAddrSpace(Proto->getReturnType());
  SmallVector<QualType, 16> Args(Proto->param_types().size());
  for (unsigned i = 0, n = Args.size(); i != n; ++i)
    Args[i] = removePtrSizeAddrSpace(Proto->param_types()[i]);
  return getFunctionType(RetTy, Args, Proto->getExtProtoInfo());
}

if (const FunctionNoProtoType *Proto = T->getAs<FunctionNoProtoType>()) {
  QualType RetTy = removePtrSizeAddrSpace(Proto->getReturnType());
  return getFunctionNoProtoType(RetTy, Proto->getExtInfo());
}

return T;
3271}

3273bool ASTContext::hasSameFunctionTypeIgnoringPtrSizes(QualType T, QualType U) {
return hasSameType(T, U) ||
       hasSameType(getFunctionTypeWithoutPtrSizes(T),
                   getFunctionTypeWithoutPtrSizes(U));
3277}

3279void ASTContext::adjustExceptionSpec(
  FunctionDecl *FD, const FunctionProtoType::ExceptionSpecInfo &ESI,
  bool AsWritten) {
// Update the type.
QualType Updated =
    getFunctionTypeWithExceptionSpec(FD->getType(), ESI);
FD->setType(Updated);

if (!AsWritten)
  return;

// Update the type in the type source information too.
if (TypeSourceInfo *TSInfo = FD->getTypeSourceInfo()) {
  // If the type and the type-as-written differ, we may need to update
  // the type-as-written too.
  if (TSInfo->getType() != FD->getType())
    Updated = getFunctionTypeWithExceptionSpec(TSInfo->getType(), ESI);

  // FIXME: When we get proper type location information for exceptions,
  // we'll also have to rebuild the TypeSourceInfo. For now, we just patch
  // up the TypeSourceInfo;
  assert(TypeLoc::getFullDataSizeForType(Updated) ==(static_cast <bool> (TypeLoc::getFullDataSizeForType(Updated
) == TypeLoc::getFullDataSizeForType(TSInfo->getType()) &&
 "TypeLoc size mismatch from updating exception specification"
) ? void (0) : __assert_fail ("TypeLoc::getFullDataSizeForType(Updated) == TypeLoc::getFullDataSizeForType(TSInfo->getType()) && \"TypeLoc size mismatch from updating exception specification\""
, "clang/lib/AST/ASTContext.cpp", 3302, __extension__ __PRETTY_FUNCTION__
))
             TypeLoc::getFullDataSizeForType(TSInfo->getType()) &&(static_cast <bool> (TypeLoc::getFullDataSizeForType(Updated
) == TypeLoc::getFullDataSizeForType(TSInfo->getType()) &&
 "TypeLoc size mismatch from updating exception specification"
) ? void (0) : __assert_fail ("TypeLoc::getFullDataSizeForType(Updated) == TypeLoc::getFullDataSizeForType(TSInfo->getType()) && \"TypeLoc size mismatch from updating exception specification\""
, "clang/lib/AST/ASTContext.cpp", 3302, __extension__ __PRETTY_FUNCTION__
))
         "TypeLoc size mismatch from updating exception specification")(static_cast <bool> (TypeLoc::getFullDataSizeForType(Updated
) == TypeLoc::getFullDataSizeForType(TSInfo->getType()) &&
 "TypeLoc size mismatch from updating exception specification"
) ? void (0) : __assert_fail ("TypeLoc::getFullDataSizeForType(Updated) == TypeLoc::getFullDataSizeForType(TSInfo->getType()) && \"TypeLoc size mismatch from updating exception specification\""
, "clang/lib/AST/ASTContext.cpp", 3302, __extension__ __PRETTY_FUNCTION__
));
  TSInfo->overrideType(Updated);
}
3305}

3307/// getComplexType - Return the uniqued reference to the type for a complex
3308/// number with the specified element type.
3309QualType ASTContext::getComplexType(QualType T) const {
// Unique pointers, to guarantee there is only one pointer of a particular
// structure.
llvm::FoldingSetNodeID ID;
ComplexType::Profile(ID, T);

void *InsertPos = nullptr;
if (ComplexType *CT = ComplexTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(CT, 0);

// If the pointee type isn't canonical, this won't be a canonical type either,
// so fill in the canonical type field.
QualType Canonical;
if (!T.isCanonical()) {
  Canonical = getComplexType(getCanonicalType(T));

  // Get the new insert position for the node we care about.
  ComplexType *NewIP = ComplexTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3327, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment) ComplexType(T, Canonical);
Types.push_back(New);
ComplexTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
3333}

3335/// getPointerType - Return the uniqued reference to the type for a pointer to
3336/// the specified type.
3337QualType ASTContext::getPointerType(QualType T) const {
// Unique pointers, to guarantee there is only one pointer of a particular
// structure.
llvm::FoldingSetNodeID ID;
PointerType::Profile(ID, T);

void *InsertPos = nullptr;
if (PointerType *PT = PointerTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(PT, 0);

// If the pointee type isn't canonical, this won't be a canonical type either,
// so fill in the canonical type field.
QualType Canonical;
if (!T.isCanonical()) {
  Canonical = getPointerType(getCanonicalType(T));

  // Get the new insert position for the node we care about.
  PointerType *NewIP = PointerTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3355, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment) PointerType(T, Canonical);
Types.push_back(New);
PointerTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
3361}

3363QualType ASTContext::getAdjustedType(QualType Orig, QualType New) const {
llvm::FoldingSetNodeID ID;
AdjustedType::Profile(ID, Orig, New);
void *InsertPos = nullptr;
AdjustedType *AT = AdjustedTypes.FindNodeOrInsertPos(ID, InsertPos);
if (AT)
  return QualType(AT, 0);

QualType Canonical = getCanonicalType(New);

// Get the new insert position for the node we care about.
AT = AdjustedTypes.FindNodeOrInsertPos(ID, InsertPos);
assert(!AT && "Shouldn't be in the map!")(static_cast <bool> (!AT && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!AT && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3375, __extension__ __PRETTY_FUNCTION__
));

AT = new (*this, TypeAlignment)
    AdjustedType(Type::Adjusted, Orig, New, Canonical);
Types.push_back(AT);
AdjustedTypes.InsertNode(AT, InsertPos);
return QualType(AT, 0);
3382}

3384QualType ASTContext::getDecayedType(QualType Orig, QualType Decayed) const {
llvm::FoldingSetNodeID ID;
AdjustedType::Profile(ID, Orig, Decayed);
void *InsertPos = nullptr;
AdjustedType *AT = AdjustedTypes.FindNodeOrInsertPos(ID, InsertPos);
if (AT)
  return QualType(AT, 0);

QualType Canonical = getCanonicalType(Decayed);

// Get the new insert position for the node we care about.
AT = AdjustedTypes.FindNodeOrInsertPos(ID, InsertPos);
assert(!AT && "Shouldn't be in the map!")(static_cast <bool> (!AT && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!AT && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3396, __extension__ __PRETTY_FUNCTION__
));

AT = new (*this, TypeAlignment) DecayedType(Orig, Decayed, Canonical);
Types.push_back(AT);
AdjustedTypes.InsertNode(AT, InsertPos);
return QualType(AT, 0);
3402}

3404QualType ASTContext::getDecayedType(QualType T) const {
assert((T->isArrayType() || T->isFunctionType()) && "T does not decay")(static_cast <bool> ((T->isArrayType() || T->isFunctionType
()) && "T does not decay") ? void (0) : __assert_fail
 ("(T->isArrayType() || T->isFunctionType()) && \"T does not decay\""
, "clang/lib/AST/ASTContext.cpp", 3405, __extension__ __PRETTY_FUNCTION__
));

QualType Decayed;

// C99 6.7.5.3p7:
//   A declaration of a parameter as "array of type" shall be
//   adjusted to "qualified pointer to type", where the type
//   qualifiers (if any) are those specified within the [ and ] of
//   the array type derivation.
if (T->isArrayType())
  Decayed = getArrayDecayedType(T);

// C99 6.7.5.3p8:
//   A declaration of a parameter as "function returning type"
//   shall be adjusted to "pointer to function returning type", as
//   in 6.3.2.1.
if (T->isFunctionType())
  Decayed = getPointerType(T);

return getDecayedType(T, Decayed);
3425}

3427/// getBlockPointerType - Return the uniqued reference to the type for
3428/// a pointer to the specified block.
3429QualType ASTContext::getBlockPointerType(QualType T) const {
assert(T->isFunctionType() && "block of function types only")(static_cast <bool> (T->isFunctionType() && "block of function types only"
) ? void (0) : __assert_fail ("T->isFunctionType() && \"block of function types only\""
, "clang/lib/AST/ASTContext.cpp", 3430, __extension__ __PRETTY_FUNCTION__
));
// Unique pointers, to guarantee there is only one block of a particular
// structure.
llvm::FoldingSetNodeID ID;
BlockPointerType::Profile(ID, T);

void *InsertPos = nullptr;
if (BlockPointerType *PT =
      BlockPointerTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(PT, 0);

// If the block pointee type isn't canonical, this won't be a canonical
// type either so fill in the canonical type field.
QualType Canonical;
if (!T.isCanonical()) {
  Canonical = getBlockPointerType(getCanonicalType(T));

  // Get the new insert position for the node we care about.
  BlockPointerType *NewIP =
    BlockPointerTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3450, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment) BlockPointerType(T, Canonical);
Types.push_back(New);
BlockPointerTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
3456}

3458/// getLValueReferenceType - Return the uniqued reference to the type for an
3459/// lvalue reference to the specified type.
3460QualType
3461ASTContext::getLValueReferenceType(QualType T, bool SpelledAsLValue) const {
assert((!T->isPlaceholderType() ||(static_cast <bool> ((!T->isPlaceholderType() || T->
isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&
 "Unresolved placeholder type") ? void (0) : __assert_fail ("(!T->isPlaceholderType() || T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) && \"Unresolved placeholder type\""
, "clang/lib/AST/ASTContext.cpp", 3464, __extension__ __PRETTY_FUNCTION__
))
        T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&(static_cast <bool> ((!T->isPlaceholderType() || T->
isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&
 "Unresolved placeholder type") ? void (0) : __assert_fail ("(!T->isPlaceholderType() || T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) && \"Unresolved placeholder type\""
, "clang/lib/AST/ASTContext.cpp", 3464, __extension__ __PRETTY_FUNCTION__
))
       "Unresolved placeholder type")(static_cast <bool> ((!T->isPlaceholderType() || T->
isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&
 "Unresolved placeholder type") ? void (0) : __assert_fail ("(!T->isPlaceholderType() || T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) && \"Unresolved placeholder type\""
, "clang/lib/AST/ASTContext.cpp", 3464, __extension__ __PRETTY_FUNCTION__
));

// Unique pointers, to guarantee there is only one pointer of a particular
// structure.
llvm::FoldingSetNodeID ID;
ReferenceType::Profile(ID, T, SpelledAsLValue);

void *InsertPos = nullptr;
if (LValueReferenceType *RT =
      LValueReferenceTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(RT, 0);

const auto *InnerRef = T->getAs<ReferenceType>();

// If the referencee type isn't canonical, this won't be a canonical type
// either, so fill in the canonical type field.
QualType Canonical;
if (!SpelledAsLValue || InnerRef || !T.isCanonical()) {
  QualType PointeeType = (InnerRef ? InnerRef->getPointeeType() : T);
  Canonical = getLValueReferenceType(getCanonicalType(PointeeType));

  // Get the new insert position for the node we care about.
  LValueReferenceType *NewIP =
    LValueReferenceTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3488, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}

auto *New = new (*this, TypeAlignment) LValueReferenceType(T, Canonical,
                                                           SpelledAsLValue);
Types.push_back(New);
LValueReferenceTypes.InsertNode(New, InsertPos);

return QualType(New, 0);
3497}

3499/// getRValueReferenceType - Return the uniqued reference to the type for an
3500/// rvalue reference to the specified type.
3501QualType ASTContext::getRValueReferenceType(QualType T) const {
assert((!T->isPlaceholderType() ||(static_cast <bool> ((!T->isPlaceholderType() || T->
isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&
 "Unresolved placeholder type") ? void (0) : __assert_fail ("(!T->isPlaceholderType() || T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) && \"Unresolved placeholder type\""
, "clang/lib/AST/ASTContext.cpp", 3504, __extension__ __PRETTY_FUNCTION__
))
        T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&(static_cast <bool> ((!T->isPlaceholderType() || T->
isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&
 "Unresolved placeholder type") ? void (0) : __assert_fail ("(!T->isPlaceholderType() || T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) && \"Unresolved placeholder type\""
, "clang/lib/AST/ASTContext.cpp", 3504, __extension__ __PRETTY_FUNCTION__
))
       "Unresolved placeholder type")(static_cast <bool> ((!T->isPlaceholderType() || T->
isSpecificPlaceholderType(BuiltinType::UnknownAny)) &&
 "Unresolved placeholder type") ? void (0) : __assert_fail ("(!T->isPlaceholderType() || T->isSpecificPlaceholderType(BuiltinType::UnknownAny)) && \"Unresolved placeholder type\""
, "clang/lib/AST/ASTContext.cpp", 3504, __extension__ __PRETTY_FUNCTION__
));

// Unique pointers, to guarantee there is only one pointer of a particular
// structure.
llvm::FoldingSetNodeID ID;
ReferenceType::Profile(ID, T, false);

void *InsertPos = nullptr;
if (RValueReferenceType *RT =
      RValueReferenceTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(RT, 0);

const auto *InnerRef = T->getAs<ReferenceType>();

// If the referencee type isn't canonical, this won't be a canonical type
// either, so fill in the canonical type field.
QualType Canonical;
if (InnerRef || !T.isCanonical()) {
  QualType PointeeType = (InnerRef ? InnerRef->getPointeeType() : T);
  Canonical = getRValueReferenceType(getCanonicalType(PointeeType));

  // Get the new insert position for the node we care about.
  RValueReferenceType *NewIP =
    RValueReferenceTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3528, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}

auto *New = new (*this, TypeAlignment) RValueReferenceType(T, Canonical);
Types.push_back(New);
RValueReferenceTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
3535}

3537/// getMemberPointerType - Return the uniqued reference to the type for a
3538/// member pointer to the specified type, in the specified class.
3539QualType ASTContext::getMemberPointerType(QualType T, const Type *Cls) const {
// Unique pointers, to guarantee there is only one pointer of a particular
// structure.
llvm::FoldingSetNodeID ID;
MemberPointerType::Profile(ID, T, Cls);

void *InsertPos = nullptr;
if (MemberPointerType *PT =
    MemberPointerTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(PT, 0);

// If the pointee or class type isn't canonical, this won't be a canonical
// type either, so fill in the canonical type field.
QualType Canonical;
if (!T.isCanonical() || !Cls->isCanonicalUnqualified()) {
  Canonical = getMemberPointerType(getCanonicalType(T),getCanonicalType(Cls));

  // Get the new insert position for the node we care about.
  MemberPointerType *NewIP =
    MemberPointerTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3559, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment) MemberPointerType(T, Cls, Canonical);
Types.push_back(New);
MemberPointerTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
3565}

3567/// getConstantArrayType - Return the unique reference to the type for an
3568/// array of the specified element type.
3569QualType ASTContext::getConstantArrayType(QualType EltTy,
                                        const llvm::APInt &ArySizeIn,
                                        const Expr *SizeExpr,
                                        ArrayType::ArraySizeModifier ASM,
                                        unsigned IndexTypeQuals) const {
assert((EltTy->isDependentType() ||(static_cast <bool> ((EltTy->isDependentType() || EltTy
->isIncompleteType() || EltTy->isConstantSizeType()) &&
 "Constant array of VLAs is illegal!") ? void (0) : __assert_fail
 ("(EltTy->isDependentType() || EltTy->isIncompleteType() || EltTy->isConstantSizeType()) && \"Constant array of VLAs is illegal!\""
, "clang/lib/AST/ASTContext.cpp", 3576, __extension__ __PRETTY_FUNCTION__
))
        EltTy->isIncompleteType() || EltTy->isConstantSizeType()) &&(static_cast <bool> ((EltTy->isDependentType() || EltTy
->isIncompleteType() || EltTy->isConstantSizeType()) &&
 "Constant array of VLAs is illegal!") ? void (0) : __assert_fail
 ("(EltTy->isDependentType() || EltTy->isIncompleteType() || EltTy->isConstantSizeType()) && \"Constant array of VLAs is illegal!\""
, "clang/lib/AST/ASTContext.cpp", 3576, __extension__ __PRETTY_FUNCTION__
))
       "Constant array of VLAs is illegal!")(static_cast <bool> ((EltTy->isDependentType() || EltTy
->isIncompleteType() || EltTy->isConstantSizeType()) &&
 "Constant array of VLAs is illegal!") ? void (0) : __assert_fail
 ("(EltTy->isDependentType() || EltTy->isIncompleteType() || EltTy->isConstantSizeType()) && \"Constant array of VLAs is illegal!\""
, "clang/lib/AST/ASTContext.cpp", 3576, __extension__ __PRETTY_FUNCTION__
));

// We only need the size as part of the type if it's instantiation-dependent.
if (SizeExpr && !SizeExpr->isInstantiationDependent())
  SizeExpr = nullptr;

// Convert the array size into a canonical width matching the pointer size for
// the target.
llvm::APInt ArySize(ArySizeIn);
ArySize = ArySize.zextOrTrunc(Target->getMaxPointerWidth());

llvm::FoldingSetNodeID ID;
ConstantArrayType::Profile(ID, *this, EltTy, ArySize, SizeExpr, ASM,
                           IndexTypeQuals);

void *InsertPos = nullptr;
if (ConstantArrayType *ATP =
    ConstantArrayTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(ATP, 0);

// If the element type isn't canonical or has qualifiers, or the array bound
// is instantiation-dependent, this won't be a canonical type either, so fill
// in the canonical type field.
QualType Canon;
// FIXME: Check below should look for qualifiers behind sugar.
if (!EltTy.isCanonical() || EltTy.hasLocalQualifiers() || SizeExpr) {
  SplitQualType canonSplit = getCanonicalType(EltTy).split();
  Canon = getConstantArrayType(QualType(canonSplit.Ty, 0), ArySize, nullptr,
                               ASM, IndexTypeQuals);
  Canon = getQualifiedType(Canon, canonSplit.Quals);

  // Get the new insert position for the node we care about.
  ConstantArrayType *NewIP =
    ConstantArrayTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3610, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}

void *Mem = Allocate(
    ConstantArrayType::totalSizeToAlloc<const Expr *>(SizeExpr ? 1 : 0),
    TypeAlignment);
auto *New = new (Mem)
  ConstantArrayType(EltTy, Canon, ArySize, SizeExpr, ASM, IndexTypeQuals);
ConstantArrayTypes.InsertNode(New, InsertPos);
Types.push_back(New);
return QualType(New, 0);
3621}

3623/// getVariableArrayDecayedType - Turns the given type, which may be
3624/// variably-modified, into the corresponding type with all the known
3625/// sizes replaced with [*].
3626QualType ASTContext::getVariableArrayDecayedType(QualType type) const {
// Vastly most common case.
if (!type->isVariablyModifiedType()) return type;

QualType result;

SplitQualType split = type.getSplitDesugaredType();
const Type *ty = split.Ty;
switch (ty->getTypeClass()) {
3635#define TYPE(Class, Base)
3636#define ABSTRACT_TYPE(Class, Base)
3637#define NON_CANONICAL_TYPE(Class, Base) case Type::Class:
3638#include "clang/AST/TypeNodes.inc"
  llvm_unreachable("didn't desugar past all non-canonical types?")::llvm::llvm_unreachable_internal("didn't desugar past all non-canonical types?"
, "clang/lib/AST/ASTContext.cpp", 3639);

// These types should never be variably-modified.
case Type::Builtin:
case Type::Complex:
case Type::Vector:
case Type::DependentVector:
case Type::ExtVector:
case Type::DependentSizedExtVector:
case Type::ConstantMatrix:
case Type::DependentSizedMatrix:
case Type::DependentAddressSpace:
case Type::ObjCObject:
case Type::ObjCInterface:
case Type::ObjCObjectPointer:
case Type::Record:
case Type::Enum:
case Type::UnresolvedUsing:
case Type::TypeOfExpr:
case Type::TypeOf:
case Type::Decltype:
case Type::UnaryTransform:
case Type::DependentName:
case Type::InjectedClassName:
case Type::TemplateSpecialization:
case Type::DependentTemplateSpecialization:
case Type::TemplateTypeParm:
case Type::SubstTemplateTypeParmPack:
case Type::Auto:
case Type::DeducedTemplateSpecialization:
case Type::PackExpansion:
case Type::BitInt:
case Type::DependentBitInt:
  llvm_unreachable("type should never be variably-modified")::llvm::llvm_unreachable_internal("type should never be variably-modified"
, "clang/lib/AST/ASTContext.cpp", 3672);

// These types can be variably-modified but should never need to
// further decay.
case Type::FunctionNoProto:
case Type::FunctionProto:
case Type::BlockPointer:
case Type::MemberPointer:
case Type::Pipe:
  return type;

// These types can be variably-modified.  All these modifications
// preserve structure except as noted by comments.
// TODO: if we ever care about optimizing VLAs, there are no-op
// optimizations available here.
case Type::Pointer:
  result = getPointerType(getVariableArrayDecayedType(
                            cast<PointerType>(ty)->getPointeeType()));
  break;

case Type::LValueReference: {
  const auto *lv = cast<LValueReferenceType>(ty);
  result = getLValueReferenceType(
               getVariableArrayDecayedType(lv->getPointeeType()),
                                  lv->isSpelledAsLValue());
  break;
}

case Type::RValueReference: {
  const auto *lv = cast<RValueReferenceType>(ty);
  result = getRValueReferenceType(
               getVariableArrayDecayedType(lv->getPointeeType()));
  break;
}

case Type::Atomic: {
  const auto *at = cast<AtomicType>(ty);
  result = getAtomicType(getVariableArrayDecayedType(at->getValueType()));
  break;
}

case Type::ConstantArray: {
  const auto *cat = cast<ConstantArrayType>(ty);
  result = getConstantArrayType(
               getVariableArrayDecayedType(cat->getElementType()),
                                cat->getSize(),
                                cat->getSizeExpr(),
                                cat->getSizeModifier(),
                                cat->getIndexTypeCVRQualifiers());
  break;
}

case Type::DependentSizedArray: {
  const auto *dat = cast<DependentSizedArrayType>(ty);
  result = getDependentSizedArrayType(
               getVariableArrayDecayedType(dat->getElementType()),
                                      dat->getSizeExpr(),
                                      dat->getSizeModifier(),
                                      dat->getIndexTypeCVRQualifiers(),
                                      dat->getBracketsRange());
  break;
}

// Turn incomplete types into [*] types.
case Type::IncompleteArray: {
  const auto *iat = cast<IncompleteArrayType>(ty);
  result = getVariableArrayType(
               getVariableArrayDecayedType(iat->getElementType()),
                                /*size*/ nullptr,
                                ArrayType::Normal,
                                iat->getIndexTypeCVRQualifiers(),
                                SourceRange());
  break;
}

// Turn VLA types into [*] types.
case Type::VariableArray: {
  const auto *vat = cast<VariableArrayType>(ty);
  result = getVariableArrayType(
               getVariableArrayDecayedType(vat->getElementType()),
                                /*size*/ nullptr,
                                ArrayType::Star,
                                vat->getIndexTypeCVRQualifiers(),
                                vat->getBracketsRange());
  break;
}
}

// Apply the top-level qualifiers from the original.
return getQualifiedType(result, split.Quals);
3762}

3764/// getVariableArrayType - Returns a non-unique reference to the type for a
3765/// variable array of the specified element type.
3766QualType ASTContext::getVariableArrayType(QualType EltTy,
                                        Expr *NumElts,
                                        ArrayType::ArraySizeModifier ASM,
                                        unsigned IndexTypeQuals,
                                        SourceRange Brackets) const {
// Since we don't unique expressions, it isn't possible to unique VLA's
// that have an expression provided for their size.
QualType Canon;

// Be sure to pull qualifiers off the element type.
// FIXME: Check below should look for qualifiers behind sugar.
if (!EltTy.isCanonical() || EltTy.hasLocalQualifiers()) {
  SplitQualType canonSplit = getCanonicalType(EltTy).split();
  Canon = getVariableArrayType(QualType(canonSplit.Ty, 0), NumElts, ASM,
                               IndexTypeQuals, Brackets);
  Canon = getQualifiedType(Canon, canonSplit.Quals);
}

auto *New = new (*this, TypeAlignment)
  VariableArrayType(EltTy, Canon, NumElts, ASM, IndexTypeQuals, Brackets);

VariableArrayTypes.push_back(New);
Types.push_back(New);
return QualType(New, 0);
3790}

3792/// getDependentSizedArrayType - Returns a non-unique reference to
3793/// the type for a dependently-sized array of the specified element
3794/// type.
3795QualType ASTContext::getDependentSizedArrayType(QualType elementType,
                                              Expr *numElements,
                                              ArrayType::ArraySizeModifier ASM,
                                              unsigned elementTypeQuals,
                                              SourceRange brackets) const {
assert((!numElements || numElements->isTypeDependent() ||(static_cast <bool> ((!numElements || numElements->isTypeDependent
() || numElements->isValueDependent()) && "Size must be type- or value-dependent!"
) ? void (0) : __assert_fail ("(!numElements || numElements->isTypeDependent() || numElements->isValueDependent()) && \"Size must be type- or value-dependent!\""
, "clang/lib/AST/ASTContext.cpp", 3802, __extension__ __PRETTY_FUNCTION__
))
        numElements->isValueDependent()) &&(static_cast <bool> ((!numElements || numElements->isTypeDependent
() || numElements->isValueDependent()) && "Size must be type- or value-dependent!"
) ? void (0) : __assert_fail ("(!numElements || numElements->isTypeDependent() || numElements->isValueDependent()) && \"Size must be type- or value-dependent!\""
, "clang/lib/AST/ASTContext.cpp", 3802, __extension__ __PRETTY_FUNCTION__
))
       "Size must be type- or value-dependent!")(static_cast <bool> ((!numElements || numElements->isTypeDependent
() || numElements->isValueDependent()) && "Size must be type- or value-dependent!"
) ? void (0) : __assert_fail ("(!numElements || numElements->isTypeDependent() || numElements->isValueDependent()) && \"Size must be type- or value-dependent!\""
, "clang/lib/AST/ASTContext.cpp", 3802, __extension__ __PRETTY_FUNCTION__
));

// Dependently-sized array types that do not have a specified number
// of elements will have their sizes deduced from a dependent
// initializer.  We do no canonicalization here at all, which is okay
// because they can't be used in most locations.
if (!numElements) {
  auto *newType
    = new (*this, TypeAlignment)
        DependentSizedArrayType(*this, elementType, QualType(),
                                numElements, ASM, elementTypeQuals,
                                brackets);
  Types.push_back(newType);
  return QualType(newType, 0);
}

// Otherwise, we actually build a new type every time, but we
// also build a canonical type.

SplitQualType canonElementType = getCanonicalType(elementType).split();

void *insertPos = nullptr;
llvm::FoldingSetNodeID ID;
DependentSizedArrayType::Profile(ID, *this,
                                 QualType(canonElementType.Ty, 0),
                                 ASM, elementTypeQuals, numElements);

// Look for an existing type with these properties.
DependentSizedArrayType *canonTy =
  DependentSizedArrayTypes.FindNodeOrInsertPos(ID, insertPos);

// If we don't have one, build one.
if (!canonTy) {
  canonTy = new (*this, TypeAlignment)
    DependentSizedArrayType(*this, QualType(canonElementType.Ty, 0),
                            QualType(), numElements, ASM, elementTypeQuals,
                            brackets);
  DependentSizedArrayTypes.InsertNode(canonTy, insertPos);
  Types.push_back(canonTy);
}

// Apply qualifiers from the element type to the array.
QualType canon = getQualifiedType(QualType(canonTy,0),
                                  canonElementType.Quals);

// If we didn't need extra canonicalization for the element type or the size
// expression, then just use that as our result.
if (QualType(canonElementType.Ty, 0) == elementType &&
    canonTy->getSizeExpr() == numElements)
  return canon;

// Otherwise, we need to build a type which follows the spelling
// of the element type.
auto *sugaredType
  = new (*this, TypeAlignment)
      DependentSizedArrayType(*this, elementType, canon, numElements,
                              ASM, elementTypeQuals, brackets);
Types.push_back(sugaredType);
return QualType(sugaredType, 0);
3861}

3863QualType ASTContext::getIncompleteArrayType(QualType elementType,
                                          ArrayType::ArraySizeModifier ASM,
                                          unsigned elementTypeQuals) const {
llvm::FoldingSetNodeID ID;
IncompleteArrayType::Profile(ID, elementType, ASM, elementTypeQuals);

void *insertPos = nullptr;
if (IncompleteArrayType *iat =
     IncompleteArrayTypes.FindNodeOrInsertPos(ID, insertPos))
  return QualType(iat, 0);

// If the element type isn't canonical, this won't be a canonical type
// either, so fill in the canonical type field.  We also have to pull
// qualifiers off the element type.
QualType canon;

// FIXME: Check below should look for qualifiers behind sugar.
if (!elementType.isCanonical() || elementType.hasLocalQualifiers()) {
  SplitQualType canonSplit = getCanonicalType(elementType).split();
  canon = getIncompleteArrayType(QualType(canonSplit.Ty, 0),
                                 ASM, elementTypeQuals);
  canon = getQualifiedType(canon, canonSplit.Quals);

  // Get the new insert position for the node we care about.
  IncompleteArrayType *existing =
    IncompleteArrayTypes.FindNodeOrInsertPos(ID, insertPos);
  assert(!existing && "Shouldn't be in the map!")(static_cast <bool> (!existing && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!existing && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 3889, __extension__ __PRETTY_FUNCTION__
)); (void) existing;
}

auto *newType = new (*this, TypeAlignment)
  IncompleteArrayType(elementType, canon, ASM, elementTypeQuals);

IncompleteArrayTypes.InsertNode(newType, insertPos);
Types.push_back(newType);
return QualType(newType, 0);
3898}

3900ASTContext::BuiltinVectorTypeInfo
3901ASTContext::getBuiltinVectorTypeInfo(const BuiltinType *Ty) const {
3902#define SVE_INT_ELTTY(BITS, ELTS, SIGNED, NUMVECTORS){getIntTypeForBitwidth(BITS, SIGNED), llvm::ElementCount::getScalable
(ELTS), NUMVECTORS};                          \
{getIntTypeForBitwidth(BITS, SIGNED), llvm::ElementCount::getScalable(ELTS), \
 NUMVECTORS};

3906#define SVE_ELTTY(ELTTY, ELTS, NUMVECTORS){ELTTY, llvm::ElementCount::getScalable(ELTS), NUMVECTORS};                                     \
{ELTTY, llvm::ElementCount::getScalable(ELTS), NUMVECTORS};

switch (Ty->getKind()) {
default:
  llvm_unreachable("Unsupported builtin vector type")::llvm::llvm_unreachable_internal("Unsupported builtin vector type"
, "clang/lib/AST/ASTContext.cpp", 3911);
case BuiltinType::SveInt8:
  return SVE_INT_ELTTY(8, 16, true, 1){getIntTypeForBitwidth(8, true), llvm::ElementCount::getScalable
(16), 1};;
case BuiltinType::SveUint8:
  return SVE_INT_ELTTY(8, 16, false, 1){getIntTypeForBitwidth(8, false), llvm::ElementCount::getScalable
(16), 1};;
case BuiltinType::SveInt8x2:
  return SVE_INT_ELTTY(8, 16, true, 2){getIntTypeForBitwidth(8, true), llvm::ElementCount::getScalable
(16), 2};;
case BuiltinType::SveUint8x2:
  return SVE_INT_ELTTY(8, 16, false, 2){getIntTypeForBitwidth(8, false), llvm::ElementCount::getScalable
(16), 2};;
case BuiltinType::SveInt8x3:
  return SVE_INT_ELTTY(8, 16, true, 3){getIntTypeForBitwidth(8, true), llvm::ElementCount::getScalable
(16), 3};;
case BuiltinType::SveUint8x3:
  return SVE_INT_ELTTY(8, 16, false, 3){getIntTypeForBitwidth(8, false), llvm::ElementCount::getScalable
(16), 3};;
case BuiltinType::SveInt8x4:
  return SVE_INT_ELTTY(8, 16, true, 4){getIntTypeForBitwidth(8, true), llvm::ElementCount::getScalable
(16), 4};;
case BuiltinType::SveUint8x4:
  return SVE_INT_ELTTY(8, 16, false, 4){getIntTypeForBitwidth(8, false), llvm::ElementCount::getScalable
(16), 4};;
case BuiltinType::SveInt16:
  return SVE_INT_ELTTY(16, 8, true, 1){getIntTypeForBitwidth(16, true), llvm::ElementCount::getScalable
(8), 1};;
case BuiltinType::SveUint16:
  return SVE_INT_ELTTY(16, 8, false, 1){getIntTypeForBitwidth(16, false), llvm::ElementCount::getScalable
(8), 1};;
case BuiltinType::SveInt16x2:
  return SVE_INT_ELTTY(16, 8, true, 2){getIntTypeForBitwidth(16, true), llvm::ElementCount::getScalable
(8), 2};;
case BuiltinType::SveUint16x2:
  return SVE_INT_ELTTY(16, 8, false, 2){getIntTypeForBitwidth(16, false), llvm::ElementCount::getScalable
(8), 2};;
case BuiltinType::SveInt16x3:
  return SVE_INT_ELTTY(16, 8, true, 3){getIntTypeForBitwidth(16, true), llvm::ElementCount::getScalable
(8), 3};;
case BuiltinType::SveUint16x3:
  return SVE_INT_ELTTY(16, 8, false, 3){getIntTypeForBitwidth(16, false), llvm::ElementCount::getScalable
(8), 3};;
case BuiltinType::SveInt16x4:
  return SVE_INT_ELTTY(16, 8, true, 4){getIntTypeForBitwidth(16, true), llvm::ElementCount::getScalable
(8), 4};;
case BuiltinType::SveUint16x4:
  return SVE_INT_ELTTY(16, 8, false, 4){getIntTypeForBitwidth(16, false), llvm::ElementCount::getScalable
(8), 4};;
case BuiltinType::SveInt32:
  return SVE_INT_ELTTY(32, 4, true, 1){getIntTypeForBitwidth(32, true), llvm::ElementCount::getScalable
(4), 1};;
case BuiltinType::SveUint32:
  return SVE_INT_ELTTY(32, 4, false, 1){getIntTypeForBitwidth(32, false), llvm::ElementCount::getScalable
(4), 1};;
case BuiltinType::SveInt32x2:
  return SVE_INT_ELTTY(32, 4, true, 2){getIntTypeForBitwidth(32, true), llvm::ElementCount::getScalable
(4), 2};;
case BuiltinType::SveUint32x2:
  return SVE_INT_ELTTY(32, 4, false, 2){getIntTypeForBitwidth(32, false), llvm::ElementCount::getScalable
(4), 2};;
case BuiltinType::SveInt32x3:
  return SVE_INT_ELTTY(32, 4, true, 3){getIntTypeForBitwidth(32, true), llvm::ElementCount::getScalable
(4), 3};;
case BuiltinType::SveUint32x3:
  return SVE_INT_ELTTY(32, 4, false, 3){getIntTypeForBitwidth(32, false), llvm::ElementCount::getScalable
(4), 3};;
case BuiltinType::SveInt32x4:
  return SVE_INT_ELTTY(32, 4, true, 4){getIntTypeForBitwidth(32, true), llvm::ElementCount::getScalable
(4), 4};;
case BuiltinType::SveUint32x4:
  return SVE_INT_ELTTY(32, 4, false, 4){getIntTypeForBitwidth(32, false), llvm::ElementCount::getScalable
(4), 4};;
case BuiltinType::SveInt64:
  return SVE_INT_ELTTY(64, 2, true, 1){getIntTypeForBitwidth(64, true), llvm::ElementCount::getScalable
(2), 1};;
case BuiltinType::SveUint64:
  return SVE_INT_ELTTY(64, 2, false, 1){getIntTypeForBitwidth(64, false), llvm::ElementCount::getScalable
(2), 1};;
case BuiltinType::SveInt64x2:
  return SVE_INT_ELTTY(64, 2, true, 2){getIntTypeForBitwidth(64, true), llvm::ElementCount::getScalable
(2), 2};;
case BuiltinType::SveUint64x2:
  return SVE_INT_ELTTY(64, 2, false, 2){getIntTypeForBitwidth(64, false), llvm::ElementCount::getScalable
(2), 2};;
case BuiltinType::SveInt64x3:
  return SVE_INT_ELTTY(64, 2, true, 3){getIntTypeForBitwidth(64, true), llvm::ElementCount::getScalable
(2), 3};;
case BuiltinType::SveUint64x3:
  return SVE_INT_ELTTY(64, 2, false, 3){getIntTypeForBitwidth(64, false), llvm::ElementCount::getScalable
(2), 3};;
case BuiltinType::SveInt64x4:
  return SVE_INT_ELTTY(64, 2, true, 4){getIntTypeForBitwidth(64, true), llvm::ElementCount::getScalable
(2), 4};;
case BuiltinType::SveUint64x4:
  return SVE_INT_ELTTY(64, 2, false, 4){getIntTypeForBitwidth(64, false), llvm::ElementCount::getScalable
(2), 4};;
case BuiltinType::SveBool:
  return SVE_ELTTY(BoolTy, 16, 1){BoolTy, llvm::ElementCount::getScalable(16), 1};;
case BuiltinType::SveBoolx2:
  return SVE_ELTTY(BoolTy, 16, 2){BoolTy, llvm::ElementCount::getScalable(16), 2};;
case BuiltinType::SveBoolx4:
  return SVE_ELTTY(BoolTy, 16, 4){BoolTy, llvm::ElementCount::getScalable(16), 4};;
case BuiltinType::SveFloat16:
  return SVE_ELTTY(HalfTy, 8, 1){HalfTy, llvm::ElementCount::getScalable(8), 1};;
case BuiltinType::SveFloat16x2:
  return SVE_ELTTY(HalfTy, 8, 2){HalfTy, llvm::ElementCount::getScalable(8), 2};;
case BuiltinType::SveFloat16x3:
  return SVE_ELTTY(HalfTy, 8, 3){HalfTy, llvm::ElementCount::getScalable(8), 3};;
case BuiltinType::SveFloat16x4:
  return SVE_ELTTY(HalfTy, 8, 4){HalfTy, llvm::ElementCount::getScalable(8), 4};;
case BuiltinType::SveFloat32:
  return SVE_ELTTY(FloatTy, 4, 1){FloatTy, llvm::ElementCount::getScalable(4), 1};;
case BuiltinType::SveFloat32x2:
  return SVE_ELTTY(FloatTy, 4, 2){FloatTy, llvm::ElementCount::getScalable(4), 2};;
case BuiltinType::SveFloat32x3:
  return SVE_ELTTY(FloatTy, 4, 3){FloatTy, llvm::ElementCount::getScalable(4), 3};;
case BuiltinType::SveFloat32x4:
  return SVE_ELTTY(FloatTy, 4, 4){FloatTy, llvm::ElementCount::getScalable(4), 4};;
case BuiltinType::SveFloat64:
  return SVE_ELTTY(DoubleTy, 2, 1){DoubleTy, llvm::ElementCount::getScalable(2), 1};;
case BuiltinType::SveFloat64x2:
  return SVE_ELTTY(DoubleTy, 2, 2){DoubleTy, llvm::ElementCount::getScalable(2), 2};;
case BuiltinType::SveFloat64x3:
  return SVE_ELTTY(DoubleTy, 2, 3){DoubleTy, llvm::ElementCount::getScalable(2), 3};;
case BuiltinType::SveFloat64x4:
  return SVE_ELTTY(DoubleTy, 2, 4){DoubleTy, llvm::ElementCount::getScalable(2), 4};;
case BuiltinType::SveBFloat16:
  return SVE_ELTTY(BFloat16Ty, 8, 1){BFloat16Ty, llvm::ElementCount::getScalable(8), 1};;
case BuiltinType::SveBFloat16x2:
  return SVE_ELTTY(BFloat16Ty, 8, 2){BFloat16Ty, llvm::ElementCount::getScalable(8), 2};;
case BuiltinType::SveBFloat16x3:
  return SVE_ELTTY(BFloat16Ty, 8, 3){BFloat16Ty, llvm::ElementCount::getScalable(8), 3};;
case BuiltinType::SveBFloat16x4:
  return SVE_ELTTY(BFloat16Ty, 8, 4){BFloat16Ty, llvm::ElementCount::getScalable(8), 4};;
4014#define RVV_VECTOR_TYPE_INT(Name, Id, SingletonId, NumEls, ElBits, NF,         \
                          IsSigned)                                          \
case BuiltinType::Id:                                                        \
  return {getIntTypeForBitwidth(ElBits, IsSigned),                           \
          llvm::ElementCount::getScalable(NumEls), NF};
4019#define RVV_VECTOR_TYPE_FLOAT(Name, Id, SingletonId, NumEls, ElBits, NF)       \
case BuiltinType::Id:                                                        \
  return {ElBits == 16 ? Float16Ty : (ElBits == 32 ? FloatTy : DoubleTy),    \
          llvm::ElementCount::getScalable(NumEls), NF};
4023#define RVV_PREDICATE_TYPE(Name, Id, SingletonId, NumEls)                      \
case BuiltinType::Id:                                                        \
  return {BoolTy, llvm::ElementCount::getScalable(NumEls), 1};
4026#include "clang/Basic/RISCVVTypes.def"
}
4028}

4030/// getExternrefType - Return a WebAssembly externref type, which represents an
4031/// opaque reference to a host value.
4032QualType ASTContext::getWebAssemblyExternrefType() const {
if (Target->getTriple().isWasm() && Target->hasFeature("reference-types")) {
4034#define WASM_REF_TYPE(Name, MangledName, Id, SingletonId, AS)                  \
if (BuiltinType::Id == BuiltinType::WasmExternRef)                           \
  return SingletonId;
4037#include "clang/Basic/WebAssemblyReferenceTypes.def"
}
llvm_unreachable(::llvm::llvm_unreachable_internal("shouldn't try to generate type externref outside WebAssembly target"
, "clang/lib/AST/ASTContext.cpp", 4040)
    "shouldn't try to generate type externref outside WebAssembly target")::llvm::llvm_unreachable_internal("shouldn't try to generate type externref outside WebAssembly target"
, "clang/lib/AST/ASTContext.cpp", 4040);
4041}

4043/// getScalableVectorType - Return the unique reference to a scalable vector
4044/// type of the specified element type and size. VectorType must be a built-in
4045/// type.
4046QualType ASTContext::getScalableVectorType(QualType EltTy,
                                         unsigned NumElts) const {
if (Target->hasAArch64SVETypes()) {
  uint64_t EltTySize = getTypeSize(EltTy);
4050#define SVE_VECTOR_TYPE(Name, MangledName, Id, SingletonId, NumEls, ElBits,    \
                      IsSigned, IsFP, IsBF)                                  \
if (!EltTy->isBooleanType() &&                                               \
    ((EltTy->hasIntegerRepresentation() &&                                   \
      EltTy->hasSignedIntegerRepresentation() == IsSigned) ||                \
     (EltTy->hasFloatingRepresentation() && !EltTy->isBFloat16Type() &&      \
      IsFP && !IsBF) ||                                                      \
     (EltTy->hasFloatingRepresentation() && EltTy->isBFloat16Type() &&       \
      IsBF && !IsFP)) &&                                                     \
    EltTySize == ElBits && NumElts == NumEls) {                              \
  return SingletonId;                                                        \
}
4062#define SVE_PREDICATE_TYPE(Name, MangledName, Id, SingletonId, NumEls)         \
if (EltTy->isBooleanType() && NumElts == NumEls)                             \
  return SingletonId;
4065#define SVE_OPAQUE_TYPE(Name, MangledName, Id, SingleTonId)
4066#include "clang/Basic/AArch64SVEACLETypes.def"
} else if (Target->hasRISCVVTypes()) {
  uint64_t EltTySize = getTypeSize(EltTy);
4069#define RVV_VECTOR_TYPE(Name, Id, SingletonId, NumEls, ElBits, NF, IsSigned,   \
                      IsFP)                                                  \
  if (!EltTy->isBooleanType() &&                                             \
      ((EltTy->hasIntegerRepresentation() &&                                 \
        EltTy->hasSignedIntegerRepresentation() == IsSigned) ||              \
       (EltTy->hasFloatingRepresentation() && IsFP)) &&                      \
      EltTySize == ElBits && NumElts == NumEls)                              \
    return SingletonId;
4077#define RVV_PREDICATE_TYPE(Name, Id, SingletonId, NumEls)                      \
  if (EltTy->isBooleanType() && NumElts == NumEls)                           \
    return SingletonId;
4080#include "clang/Basic/RISCVVTypes.def"
}
return QualType();
4083}

4085/// getVectorType - Return the unique reference to a vector type of
4086/// the specified element type and size. VectorType must be a built-in type.
4087QualType ASTContext::getVectorType(QualType vecType, unsigned NumElts,
                                 VectorType::VectorKind VecKind) const {
assert(vecType->isBuiltinType() ||(static_cast <bool> (vecType->isBuiltinType() || (vecType
->isBitIntType() && llvm::isPowerOf2_32(vecType->
getAs<BitIntType>()->getNumBits()) && vecType
->getAs<BitIntType>()->getNumBits() >= 8)) ? void
 (0) : __assert_fail ("vecType->isBuiltinType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4093, __extension__ __PRETTY_FUNCTION__
))
7
←
Assuming the object is not a 'const class clang::BitIntType *'→
8
←
Called C++ object pointer is null
       (vecType->isBitIntType() &&(static_cast <bool> (vecType->isBuiltinType() || (vecType
->isBitIntType() && llvm::isPowerOf2_32(vecType->
getAs<BitIntType>()->getNumBits()) && vecType
->getAs<BitIntType>()->getNumBits() >= 8)) ? void
 (0) : __assert_fail ("vecType->isBuiltinType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4093, __extension__ __PRETTY_FUNCTION__
))
        // Only support _BitInt elements with byte-sized power of 2 NumBits.(static_cast <bool> (vecType->isBuiltinType() || (vecType
->isBitIntType() && llvm::isPowerOf2_32(vecType->
getAs<BitIntType>()->getNumBits()) && vecType
->getAs<BitIntType>()->getNumBits() >= 8)) ? void
 (0) : __assert_fail ("vecType->isBuiltinType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4093, __extension__ __PRETTY_FUNCTION__
))
        llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) &&(static_cast <bool> (vecType->isBuiltinType() || (vecType
->isBitIntType() && llvm::isPowerOf2_32(vecType->
getAs<BitIntType>()->getNumBits()) && vecType
->getAs<BitIntType>()->getNumBits() >= 8)) ? void
 (0) : __assert_fail ("vecType->isBuiltinType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4093, __extension__ __PRETTY_FUNCTION__
))
        vecType->getAs<BitIntType>()->getNumBits() >= 8))(static_cast <bool> (vecType->isBuiltinType() || (vecType
->isBitIntType() && llvm::isPowerOf2_32(vecType->
getAs<BitIntType>()->getNumBits()) && vecType
->getAs<BitIntType>()->getNumBits() >= 8)) ? void
 (0) : __assert_fail ("vecType->isBuiltinType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4093, __extension__ __PRETTY_FUNCTION__
));

// Check if we've already instantiated a vector of this type.
llvm::FoldingSetNodeID ID;
VectorType::Profile(ID, vecType, NumElts, Type::Vector, VecKind);

void *InsertPos = nullptr;
if (VectorType *VTP = VectorTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(VTP, 0);

// If the element type isn't canonical, this won't be a canonical type either,
// so fill in the canonical type field.
QualType Canonical;
if (!vecType.isCanonical()) {
  Canonical = getVectorType(getCanonicalType(vecType), NumElts, VecKind);

  // Get the new insert position for the node we care about.
  VectorType *NewIP = VectorTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 4111, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment)
  VectorType(vecType, NumElts, Canonical, VecKind);
VectorTypes.InsertNode(New, InsertPos);
Types.push_back(New);
return QualType(New, 0);
4118}

4120QualType
4121ASTContext::getDependentVectorType(QualType VecType, Expr *SizeExpr,
                                 SourceLocation AttrLoc,
                                 VectorType::VectorKind VecKind) const {
llvm::FoldingSetNodeID ID;
DependentVectorType::Profile(ID, *this, getCanonicalType(VecType), SizeExpr,
                             VecKind);
void *InsertPos = nullptr;
DependentVectorType *Canon =
    DependentVectorTypes.FindNodeOrInsertPos(ID, InsertPos);
DependentVectorType *New;

if (Canon) {
  New = new (*this, TypeAlignment) DependentVectorType(
      *this, VecType, QualType(Canon, 0), SizeExpr, AttrLoc, VecKind);
} else {
  QualType CanonVecTy = getCanonicalType(VecType);
  if (CanonVecTy == VecType) {
    New = new (*this, TypeAlignment) DependentVectorType(
        *this, VecType, QualType(), SizeExpr, AttrLoc, VecKind);

    DependentVectorType *CanonCheck =
        DependentVectorTypes.FindNodeOrInsertPos(ID, InsertPos);
    assert(!CanonCheck &&(static_cast <bool> (!CanonCheck && "Dependent-sized vector_size canonical type broken"
) ? void (0) : __assert_fail ("!CanonCheck && \"Dependent-sized vector_size canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 4144, __extension__ __PRETTY_FUNCTION__
))
           "Dependent-sized vector_size canonical type broken")(static_cast <bool> (!CanonCheck && "Dependent-sized vector_size canonical type broken"
) ? void (0) : __assert_fail ("!CanonCheck && \"Dependent-sized vector_size canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 4144, __extension__ __PRETTY_FUNCTION__
));
    (void)CanonCheck;
    DependentVectorTypes.InsertNode(New, InsertPos);
  } else {
    QualType CanonTy = getDependentVectorType(CanonVecTy, SizeExpr,
                                              SourceLocation(), VecKind);
    New = new (*this, TypeAlignment) DependentVectorType(
        *this, VecType, CanonTy, SizeExpr, AttrLoc, VecKind);
  }
}

Types.push_back(New);
return QualType(New, 0);
4157}

4159/// getExtVectorType - Return the unique reference to an extended vector type of
4160/// the specified element type and size. VectorType must be a built-in type.
4161QualType ASTContext::getExtVectorType(QualType vecType,
                                    unsigned NumElts) const {
assert(vecType->isBuiltinType() || vecType->isDependentType() ||(static_cast <bool> (vecType->isBuiltinType() || vecType
->isDependentType() || (vecType->isBitIntType() &&
 llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->
getNumBits()) && vecType->getAs<BitIntType>(
)->getNumBits() >= 8)) ? void (0) : __assert_fail ("vecType->isBuiltinType() || vecType->isDependentType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4167, __extension__ __PRETTY_FUNCTION__
))
       (vecType->isBitIntType() &&(static_cast <bool> (vecType->isBuiltinType() || vecType
->isDependentType() || (vecType->isBitIntType() &&
 llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->
getNumBits()) && vecType->getAs<BitIntType>(
)->getNumBits() >= 8)) ? void (0) : __assert_fail ("vecType->isBuiltinType() || vecType->isDependentType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4167, __extension__ __PRETTY_FUNCTION__
))
        // Only support _BitInt elements with byte-sized power of 2 NumBits.(static_cast <bool> (vecType->isBuiltinType() || vecType
->isDependentType() || (vecType->isBitIntType() &&
 llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->
getNumBits()) && vecType->getAs<BitIntType>(
)->getNumBits() >= 8)) ? void (0) : __assert_fail ("vecType->isBuiltinType() || vecType->isDependentType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4167, __extension__ __PRETTY_FUNCTION__
))
        llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) &&(static_cast <bool> (vecType->isBuiltinType() || vecType
->isDependentType() || (vecType->isBitIntType() &&
 llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->
getNumBits()) && vecType->getAs<BitIntType>(
)->getNumBits() >= 8)) ? void (0) : __assert_fail ("vecType->isBuiltinType() || vecType->isDependentType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4167, __extension__ __PRETTY_FUNCTION__
))
        vecType->getAs<BitIntType>()->getNumBits() >= 8))(static_cast <bool> (vecType->isBuiltinType() || vecType
->isDependentType() || (vecType->isBitIntType() &&
 llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->
getNumBits()) && vecType->getAs<BitIntType>(
)->getNumBits() >= 8)) ? void (0) : __assert_fail ("vecType->isBuiltinType() || vecType->isDependentType() || (vecType->isBitIntType() && llvm::isPowerOf2_32(vecType->getAs<BitIntType>()->getNumBits()) && vecType->getAs<BitIntType>()->getNumBits() >= 8)"
, "clang/lib/AST/ASTContext.cpp", 4167, __extension__ __PRETTY_FUNCTION__
));

// Check if we've already instantiated a vector of this type.
llvm::FoldingSetNodeID ID;
VectorType::Profile(ID, vecType, NumElts, Type::ExtVector,
                    VectorType::GenericVector);
void *InsertPos = nullptr;
if (VectorType *VTP = VectorTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(VTP, 0);

// If the element type isn't canonical, this won't be a canonical type either,
// so fill in the canonical type field.
QualType Canonical;
if (!vecType.isCanonical()) {
  Canonical = getExtVectorType(getCanonicalType(vecType), NumElts);

  // Get the new insert position for the node we care about.
  VectorType *NewIP = VectorTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 4185, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment)
  ExtVectorType(vecType, NumElts, Canonical);
VectorTypes.InsertNode(New, InsertPos);
Types.push_back(New);
return QualType(New, 0);
4192}

4194QualType
4195ASTContext::getDependentSizedExtVectorType(QualType vecType,
                                         Expr *SizeExpr,
                                         SourceLocation AttrLoc) const {
llvm::FoldingSetNodeID ID;
DependentSizedExtVectorType::Profile(ID, *this, getCanonicalType(vecType),
                                     SizeExpr);

void *InsertPos = nullptr;
DependentSizedExtVectorType *Canon
  = DependentSizedExtVectorTypes.FindNodeOrInsertPos(ID, InsertPos);
DependentSizedExtVectorType *New;
if (Canon) {
  // We already have a canonical version of this array type; use it as
  // the canonical type for a newly-built type.
  New = new (*this, TypeAlignment)
    DependentSizedExtVectorType(*this, vecType, QualType(Canon, 0),
                                SizeExpr, AttrLoc);
} else {
  QualType CanonVecTy = getCanonicalType(vecType);
  if (CanonVecTy == vecType) {
    New = new (*this, TypeAlignment)
      DependentSizedExtVectorType(*this, vecType, QualType(), SizeExpr,
                                  AttrLoc);

    DependentSizedExtVectorType *CanonCheck
      = DependentSizedExtVectorTypes.FindNodeOrInsertPos(ID, InsertPos);
    assert(!CanonCheck && "Dependent-sized ext_vector canonical type broken")(static_cast <bool> (!CanonCheck && "Dependent-sized ext_vector canonical type broken"
) ? void (0) : __assert_fail ("!CanonCheck && \"Dependent-sized ext_vector canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 4221, __extension__ __PRETTY_FUNCTION__
));
    (void)CanonCheck;
    DependentSizedExtVectorTypes.InsertNode(New, InsertPos);
  } else {
    QualType CanonExtTy = getDependentSizedExtVectorType(CanonVecTy, SizeExpr,
                                                         SourceLocation());
    New = new (*this, TypeAlignment) DependentSizedExtVectorType(
        *this, vecType, CanonExtTy, SizeExpr, AttrLoc);
  }
}

Types.push_back(New);
return QualType(New, 0);
4234}

4236QualType ASTContext::getConstantMatrixType(QualType ElementTy, unsigned NumRows,
                                         unsigned NumColumns) const {
llvm::FoldingSetNodeID ID;
ConstantMatrixType::Profile(ID, ElementTy, NumRows, NumColumns,
                            Type::ConstantMatrix);

assert(MatrixType::isValidElementType(ElementTy) &&(static_cast <bool> (MatrixType::isValidElementType(ElementTy
) && "need a valid element type") ? void (0) : __assert_fail
 ("MatrixType::isValidElementType(ElementTy) && \"need a valid element type\""
, "clang/lib/AST/ASTContext.cpp", 4243, __extension__ __PRETTY_FUNCTION__
))
       "need a valid element type")(static_cast <bool> (MatrixType::isValidElementType(ElementTy
) && "need a valid element type") ? void (0) : __assert_fail
 ("MatrixType::isValidElementType(ElementTy) && \"need a valid element type\""
, "clang/lib/AST/ASTContext.cpp", 4243, __extension__ __PRETTY_FUNCTION__
));
assert(ConstantMatrixType::isDimensionValid(NumRows) &&(static_cast <bool> (ConstantMatrixType::isDimensionValid
(NumRows) && ConstantMatrixType::isDimensionValid(NumColumns
) && "need valid matrix dimensions") ? void (0) : __assert_fail
 ("ConstantMatrixType::isDimensionValid(NumRows) && ConstantMatrixType::isDimensionValid(NumColumns) && \"need valid matrix dimensions\""
, "clang/lib/AST/ASTContext.cpp", 4246, __extension__ __PRETTY_FUNCTION__
))
       ConstantMatrixType::isDimensionValid(NumColumns) &&(static_cast <bool> (ConstantMatrixType::isDimensionValid
(NumRows) && ConstantMatrixType::isDimensionValid(NumColumns
) && "need valid matrix dimensions") ? void (0) : __assert_fail
 ("ConstantMatrixType::isDimensionValid(NumRows) && ConstantMatrixType::isDimensionValid(NumColumns) && \"need valid matrix dimensions\""
, "clang/lib/AST/ASTContext.cpp", 4246, __extension__ __PRETTY_FUNCTION__
))
       "need valid matrix dimensions")(static_cast <bool> (ConstantMatrixType::isDimensionValid
(NumRows) && ConstantMatrixType::isDimensionValid(NumColumns
) && "need valid matrix dimensions") ? void (0) : __assert_fail
 ("ConstantMatrixType::isDimensionValid(NumRows) && ConstantMatrixType::isDimensionValid(NumColumns) && \"need valid matrix dimensions\""
, "clang/lib/AST/ASTContext.cpp", 4246, __extension__ __PRETTY_FUNCTION__
));
void *InsertPos = nullptr;
if (ConstantMatrixType *MTP = MatrixTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(MTP, 0);

QualType Canonical;
if (!ElementTy.isCanonical()) {
  Canonical =
      getConstantMatrixType(getCanonicalType(ElementTy), NumRows, NumColumns);

  ConstantMatrixType *NewIP = MatrixTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Matrix type shouldn't already exist in the map")(static_cast <bool> (!NewIP && "Matrix type shouldn't already exist in the map"
) ? void (0) : __assert_fail ("!NewIP && \"Matrix type shouldn't already exist in the map\""
, "clang/lib/AST/ASTContext.cpp", 4257, __extension__ __PRETTY_FUNCTION__
));
  (void)NewIP;
}

auto *New = new (*this, TypeAlignment)
    ConstantMatrixType(ElementTy, NumRows, NumColumns, Canonical);
MatrixTypes.InsertNode(New, InsertPos);
Types.push_back(New);
return QualType(New, 0);
4266}

4268QualType ASTContext::getDependentSizedMatrixType(QualType ElementTy,
                                               Expr *RowExpr,
                                               Expr *ColumnExpr,
                                               SourceLocation AttrLoc) const {
QualType CanonElementTy = getCanonicalType(ElementTy);
llvm::FoldingSetNodeID ID;
DependentSizedMatrixType::Profile(ID, *this, CanonElementTy, RowExpr,
                                  ColumnExpr);

void *InsertPos = nullptr;
DependentSizedMatrixType *Canon =
    DependentSizedMatrixTypes.FindNodeOrInsertPos(ID, InsertPos);

if (!Canon) {
  Canon = new (*this, TypeAlignment) DependentSizedMatrixType(
      *this, CanonElementTy, QualType(), RowExpr, ColumnExpr, AttrLoc);
4284#ifndef NDEBUG
  DependentSizedMatrixType *CanonCheck =
      DependentSizedMatrixTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!CanonCheck && "Dependent-sized matrix canonical type broken")(static_cast <bool> (!CanonCheck && "Dependent-sized matrix canonical type broken"
) ? void (0) : __assert_fail ("!CanonCheck && \"Dependent-sized matrix canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 4287, __extension__ __PRETTY_FUNCTION__
));
4288#endif
  DependentSizedMatrixTypes.InsertNode(Canon, InsertPos);
  Types.push_back(Canon);
}

// Already have a canonical version of the matrix type
//
// If it exactly matches the requested type, use it directly.
if (Canon->getElementType() == ElementTy && Canon->getRowExpr() == RowExpr &&
    Canon->getRowExpr() == ColumnExpr)
  return QualType(Canon, 0);

// Use Canon as the canonical type for newly-built type.
DependentSizedMatrixType *New = new (*this, TypeAlignment)
    DependentSizedMatrixType(*this, ElementTy, QualType(Canon, 0), RowExpr,
                             ColumnExpr, AttrLoc);
Types.push_back(New);
return QualType(New, 0);
4306}

4308QualType ASTContext::getDependentAddressSpaceType(QualType PointeeType,
                                                Expr *AddrSpaceExpr,
                                                SourceLocation AttrLoc) const {
assert(AddrSpaceExpr->isInstantiationDependent())(static_cast <bool> (AddrSpaceExpr->isInstantiationDependent
()) ? void (0) : __assert_fail ("AddrSpaceExpr->isInstantiationDependent()"
, "clang/lib/AST/ASTContext.cpp", 4311, __extension__ __PRETTY_FUNCTION__
));

QualType canonPointeeType = getCanonicalType(PointeeType);

void *insertPos = nullptr;
llvm::FoldingSetNodeID ID;
DependentAddressSpaceType::Profile(ID, *this, canonPointeeType,
                                   AddrSpaceExpr);

DependentAddressSpaceType *canonTy =
  DependentAddressSpaceTypes.FindNodeOrInsertPos(ID, insertPos);

if (!canonTy) {
  canonTy = new (*this, TypeAlignment)
    DependentAddressSpaceType(*this, canonPointeeType,
                              QualType(), AddrSpaceExpr, AttrLoc);
  DependentAddressSpaceTypes.InsertNode(canonTy, insertPos);
  Types.push_back(canonTy);
}

if (canonPointeeType == PointeeType &&
    canonTy->getAddrSpaceExpr() == AddrSpaceExpr)
  return QualType(canonTy, 0);

auto *sugaredType
  = new (*this, TypeAlignment)
      DependentAddressSpaceType(*this, PointeeType, QualType(canonTy, 0),
                                AddrSpaceExpr, AttrLoc);
Types.push_back(sugaredType);
return QualType(sugaredType, 0);
4341}

4343/// Determine whether \p T is canonical as the result type of a function.
4344static bool isCanonicalResultType(QualType T) {
return T.isCanonical() &&
       (T.getObjCLifetime() == Qualifiers::OCL_None ||
        T.getObjCLifetime() == Qualifiers::OCL_ExplicitNone);
4348}

4350/// getFunctionNoProtoType - Return a K&R style C function type like 'int()'.
4351QualType
4352ASTContext::getFunctionNoProtoType(QualType ResultTy,
                                 const FunctionType::ExtInfo &Info) const {
// FIXME: This assertion cannot be enabled (yet) because the ObjC rewriter
// functionality creates a function without a prototype regardless of
// language mode (so it makes them even in C++). Once the rewriter has been
// fixed, this assertion can be enabled again.
//assert(!LangOpts.requiresStrictPrototypes() &&
//       "strict prototypes are disabled");

// Unique functions, to guarantee there is only one function of a particular
// structure.
llvm::FoldingSetNodeID ID;
FunctionNoProtoType::Profile(ID, ResultTy, Info);

void *InsertPos = nullptr;
if (FunctionNoProtoType *FT =
      FunctionNoProtoTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(FT, 0);

QualType Canonical;
if (!isCanonicalResultType(ResultTy)) {
  Canonical =
    getFunctionNoProtoType(getCanonicalFunctionResultType(ResultTy), Info);

  // Get the new insert position for the node we care about.
  FunctionNoProtoType *NewIP =
    FunctionNoProtoTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 4379, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}

auto *New = new (*this, TypeAlignment)
  FunctionNoProtoType(ResultTy, Canonical, Info);
Types.push_back(New);
FunctionNoProtoTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
4387}

4389CanQualType
4390ASTContext::getCanonicalFunctionResultType(QualType ResultType) const {
CanQualType CanResultType = getCanonicalType(ResultType);

// Canonical result types do not have ARC lifetime qualifiers.
if (CanResultType.getQualifiers().hasObjCLifetime()) {
  Qualifiers Qs = CanResultType.getQualifiers();
  Qs.removeObjCLifetime();
  return CanQualType::CreateUnsafe(
           getQualifiedType(CanResultType.getUnqualifiedType(), Qs));
}

return CanResultType;
4402}

4404static bool isCanonicalExceptionSpecification(
  const FunctionProtoType::ExceptionSpecInfo &ESI, bool NoexceptInType) {
if (ESI.Type == EST_None)
  return true;
if (!NoexceptInType)
  return false;

// C++17 onwards: exception specification is part of the type, as a simple
// boolean "can this function type throw".
if (ESI.Type == EST_BasicNoexcept)
  return true;

// A noexcept(expr) specification is (possibly) canonical if expr is
// value-dependent.
if (ESI.Type == EST_DependentNoexcept)
  return true;

// A dynamic exception specification is canonical if it only contains pack
// expansions (so we can't tell whether it's non-throwing) and all its
// contained types are canonical.
if (ESI.Type == EST_Dynamic) {
  bool AnyPackExpansions = false;
  for (QualType ET : ESI.Exceptions) {
    if (!ET.isCanonical())
      return false;
    if (ET->getAs<PackExpansionType>())
      AnyPackExpansions = true;
  }
  return AnyPackExpansions;
}

return false;
4436}

4438QualType ASTContext::getFunctionTypeInternal(
  QualType ResultTy, ArrayRef<QualType> ArgArray,
  const FunctionProtoType::ExtProtoInfo &EPI, bool OnlyWantCanonical) const {
size_t NumArgs = ArgArray.size();

// Unique functions, to guarantee there is only one function of a particular
// structure.
llvm::FoldingSetNodeID ID;
FunctionProtoType::Profile(ID, ResultTy, ArgArray.begin(), NumArgs, EPI,
                           *this, true);

QualType Canonical;
bool Unique = false;

void *InsertPos = nullptr;
if (FunctionProtoType *FPT =
      FunctionProtoTypes.FindNodeOrInsertPos(ID, InsertPos)) {
  QualType Existing = QualType(FPT, 0);

  // If we find a pre-existing equivalent FunctionProtoType, we can just reuse
  // it so long as our exception specification doesn't contain a dependent
  // noexcept expression, or we're just looking for a canonical type.
  // Otherwise, we're going to need to create a type
  // sugar node to hold the concrete expression.
  if (OnlyWantCanonical || !isComputedNoexcept(EPI.ExceptionSpec.Type) ||
      EPI.ExceptionSpec.NoexceptExpr == FPT->getNoexceptExpr())
    return Existing;

  // We need a new type sugar node for this one, to hold the new noexcept
  // expression. We do no canonicalization here, but that's OK since we don't
  // expect to see the same noexcept expression much more than once.
  Canonical = getCanonicalType(Existing);
  Unique = true;
}

bool NoexceptInType = getLangOpts().CPlusPlus17;
bool IsCanonicalExceptionSpec =
    isCanonicalExceptionSpecification(EPI.ExceptionSpec, NoexceptInType);

// Determine whether the type being created is already canonical or not.
bool isCanonical = !Unique && IsCanonicalExceptionSpec &&
                   isCanonicalResultType(ResultTy) && !EPI.HasTrailingReturn;
for (unsigned i = 0; i != NumArgs && isCanonical; ++i)
  if (!ArgArray[i].isCanonicalAsParam())
    isCanonical = false;

if (OnlyWantCanonical)
  assert(isCanonical &&(static_cast <bool> (isCanonical && "given non-canonical parameters constructing canonical type"
) ? void (0) : __assert_fail ("isCanonical && \"given non-canonical parameters constructing canonical type\""
, "clang/lib/AST/ASTContext.cpp", 4486, __extension__ __PRETTY_FUNCTION__
))
         "given non-canonical parameters constructing canonical type")(static_cast <bool> (isCanonical && "given non-canonical parameters constructing canonical type"
) ? void (0) : __assert_fail ("isCanonical && \"given non-canonical parameters constructing canonical type\""
, "clang/lib/AST/ASTContext.cpp", 4486, __extension__ __PRETTY_FUNCTION__
));

// If this type isn't canonical, get the canonical version of it if we don't
// already have it. The exception spec is only partially part of the
// canonical type, and only in C++17 onwards.
if (!isCanonical && Canonical.isNull()) {
  SmallVector<QualType, 16> CanonicalArgs;
  CanonicalArgs.reserve(NumArgs);
  for (unsigned i = 0; i != NumArgs; ++i)
    CanonicalArgs.push_back(getCanonicalParamType(ArgArray[i]));

  llvm::SmallVector<QualType, 8> ExceptionTypeStorage;
  FunctionProtoType::ExtProtoInfo CanonicalEPI = EPI;
  CanonicalEPI.HasTrailingReturn = false;

  if (IsCanonicalExceptionSpec) {
    // Exception spec is already OK.
  } else if (NoexceptInType) {
    switch (EPI.ExceptionSpec.Type) {
    case EST_Unparsed: case EST_Unevaluated: case EST_Uninstantiated:
      // We don't know yet. It shouldn't matter what we pick here; no-one
      // should ever look at this.
      [[fallthrough]];
    case EST_None: case EST_MSAny: case EST_NoexceptFalse:
      CanonicalEPI.ExceptionSpec.Type = EST_None;
      break;

      // A dynamic exception specification is almost always "not noexcept",
      // with the exception that a pack expansion might expand to no types.
    case EST_Dynamic: {
      bool AnyPacks = false;
      for (QualType ET : EPI.ExceptionSpec.Exceptions) {
        if (ET->getAs<PackExpansionType>())
          AnyPacks = true;
        ExceptionTypeStorage.push_back(getCanonicalType(ET));
      }
      if (!AnyPacks)
        CanonicalEPI.ExceptionSpec.Type = EST_None;
      else {
        CanonicalEPI.ExceptionSpec.Type = EST_Dynamic;
        CanonicalEPI.ExceptionSpec.Exceptions = ExceptionTypeStorage;
      }
      break;
    }

    case EST_DynamicNone:
    case EST_BasicNoexcept:
    case EST_NoexceptTrue:
    case EST_NoThrow:
      CanonicalEPI.ExceptionSpec.Type = EST_BasicNoexcept;
      break;

    case EST_DependentNoexcept:
      llvm_unreachable("dependent noexcept is already canonical")::llvm::llvm_unreachable_internal("dependent noexcept is already canonical"
, "clang/lib/AST/ASTContext.cpp", 4539);
    }
  } else {
    CanonicalEPI.ExceptionSpec = FunctionProtoType::ExceptionSpecInfo();
  }

  // Adjust the canonical function result type.
  CanQualType CanResultTy = getCanonicalFunctionResultType(ResultTy);
  Canonical =
      getFunctionTypeInternal(CanResultTy, CanonicalArgs, CanonicalEPI, true);

  // Get the new insert position for the node we care about.
  FunctionProtoType *NewIP =
    FunctionProtoTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 4553, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}

// Compute the needed size to hold this FunctionProtoType and the
// various trailing objects.
auto ESH = FunctionProtoType::getExceptionSpecSize(
    EPI.ExceptionSpec.Type, EPI.ExceptionSpec.Exceptions.size());
size_t Size = FunctionProtoType::totalSizeToAlloc<
    QualType, SourceLocation, FunctionType::FunctionTypeExtraBitfields,
    FunctionType::ExceptionType, Expr *, FunctionDecl *,
    FunctionProtoType::ExtParameterInfo, Qualifiers>(
    NumArgs, EPI.Variadic, EPI.requiresFunctionProtoTypeExtraBitfields(),
    ESH.NumExceptionType, ESH.NumExprPtr, ESH.NumFunctionDeclPtr,
    EPI.ExtParameterInfos ? NumArgs : 0,
    EPI.TypeQuals.hasNonFastQualifiers() ? 1 : 0);

auto *FTP = (FunctionProtoType *)Allocate(Size, TypeAlignment);
FunctionProtoType::ExtProtoInfo newEPI = EPI;
new (FTP) FunctionProtoType(ResultTy, ArgArray, Canonical, newEPI);
Types.push_back(FTP);
if (!Unique)
  FunctionProtoTypes.InsertNode(FTP, InsertPos);
return QualType(FTP, 0);
4576}

4578QualType ASTContext::getPipeType(QualType T, bool ReadOnly) const {
llvm::FoldingSetNodeID ID;
PipeType::Profile(ID, T, ReadOnly);

void *InsertPos = nullptr;
if (PipeType *PT = PipeTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(PT, 0);

// If the pipe element type isn't canonical, this won't be a canonical type
// either, so fill in the canonical type field.
QualType Canonical;
if (!T.isCanonical()) {
  Canonical = getPipeType(getCanonicalType(T), ReadOnly);

  // Get the new insert position for the node we care about.
  PipeType *NewIP = PipeTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 4594, __extension__ __PRETTY_FUNCTION__
));
  (void)NewIP;
}
auto *New = new (*this, TypeAlignment) PipeType(T, Canonical, ReadOnly);
Types.push_back(New);
PipeTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
4601}

4603QualType ASTContext::adjustStringLiteralBaseType(QualType Ty) const {
// OpenCL v1.1 s6.5.3: a string literal is in the constant address space.
return LangOpts.OpenCL ? getAddrSpaceQualType(Ty, LangAS::opencl_constant)
                       : Ty;
4607}

4609QualType ASTContext::getReadPipeType(QualType T) const {
return getPipeType(T, true);
4611}

4613QualType ASTContext::getWritePipeType(QualType T) const {
return getPipeType(T, false);
4615}

4617QualType ASTContext::getBitIntType(bool IsUnsigned, unsigned NumBits) const {
llvm::FoldingSetNodeID ID;
BitIntType::Profile(ID, IsUnsigned, NumBits);

void *InsertPos = nullptr;
if (BitIntType *EIT = BitIntTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(EIT, 0);

auto *New = new (*this, TypeAlignment) BitIntType(IsUnsigned, NumBits);
BitIntTypes.InsertNode(New, InsertPos);
Types.push_back(New);
return QualType(New, 0);
4629}

4631QualType ASTContext::getDependentBitIntType(bool IsUnsigned,
                                          Expr *NumBitsExpr) const {
assert(NumBitsExpr->isInstantiationDependent() && "Only good for dependent")(static_cast <bool> (NumBitsExpr->isInstantiationDependent
() && "Only good for dependent") ? void (0) : __assert_fail
 ("NumBitsExpr->isInstantiationDependent() && \"Only good for dependent\""
, "clang/lib/AST/ASTContext.cpp", 4633, __extension__ __PRETTY_FUNCTION__
));
llvm::FoldingSetNodeID ID;
DependentBitIntType::Profile(ID, *this, IsUnsigned, NumBitsExpr);

void *InsertPos = nullptr;
if (DependentBitIntType *Existing =
        DependentBitIntTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(Existing, 0);

auto *New = new (*this, TypeAlignment)
    DependentBitIntType(*this, IsUnsigned, NumBitsExpr);
DependentBitIntTypes.InsertNode(New, InsertPos);

Types.push_back(New);
return QualType(New, 0);
4648}

4650#ifndef NDEBUG
4651static bool NeedsInjectedClassNameType(const RecordDecl *D) {
if (!isa<CXXRecordDecl>(D)) return false;
const auto *RD = cast<CXXRecordDecl>(D);
if (isa<ClassTemplatePartialSpecializationDecl>(RD))
  return true;
if (RD->getDescribedClassTemplate() &&
    !isa<ClassTemplateSpecializationDecl>(RD))
  return true;
return false;
4660}
4661#endif

4663/// getInjectedClassNameType - Return the unique reference to the
4664/// injected class name type for the specified templated declaration.
4665QualType ASTContext::getInjectedClassNameType(CXXRecordDecl *Decl,
                                            QualType TST) const {
assert(NeedsInjectedClassNameType(Decl))(static_cast <bool> (NeedsInjectedClassNameType(Decl)) ?
 void (0) : __assert_fail ("NeedsInjectedClassNameType(Decl)"
, "clang/lib/AST/ASTContext.cpp", 4667, __extension__ __PRETTY_FUNCTION__
));
if (Decl->TypeForDecl) {
  assert(isa<InjectedClassNameType>(Decl->TypeForDecl))(static_cast <bool> (isa<InjectedClassNameType>(Decl
->TypeForDecl)) ? void (0) : __assert_fail ("isa<InjectedClassNameType>(Decl->TypeForDecl)"
, "clang/lib/AST/ASTContext.cpp", 4669, __extension__ __PRETTY_FUNCTION__
));
} else if (CXXRecordDecl *PrevDecl = Decl->getPreviousDecl()) {
  assert(PrevDecl->TypeForDecl && "previous declaration has no type")(static_cast <bool> (PrevDecl->TypeForDecl &&
 "previous declaration has no type") ? void (0) : __assert_fail
 ("PrevDecl->TypeForDecl && \"previous declaration has no type\""
, "clang/lib/AST/ASTContext.cpp", 4671, __extension__ __PRETTY_FUNCTION__
));
  Decl->TypeForDecl = PrevDecl->TypeForDecl;
  assert(isa<InjectedClassNameType>(Decl->TypeForDecl))(static_cast <bool> (isa<InjectedClassNameType>(Decl
->TypeForDecl)) ? void (0) : __assert_fail ("isa<InjectedClassNameType>(Decl->TypeForDecl)"
, "clang/lib/AST/ASTContext.cpp", 4673, __extension__ __PRETTY_FUNCTION__
));
} else {
  Type *newType =
    new (*this, TypeAlignment) InjectedClassNameType(Decl, TST);
  Decl->TypeForDecl = newType;
  Types.push_back(newType);
}
return QualType(Decl->TypeForDecl, 0);
4681}

4683/// getTypeDeclType - Return the unique reference to the type for the
4684/// specified type declaration.
4685QualType ASTContext::getTypeDeclTypeSlow(const TypeDecl *Decl) const {
assert(Decl && "Passed null for Decl param")(static_cast <bool> (Decl && "Passed null for Decl param"
) ? void (0) : __assert_fail ("Decl && \"Passed null for Decl param\""
, "clang/lib/AST/ASTContext.cpp", 4686, __extension__ __PRETTY_FUNCTION__
));
assert(!Decl->TypeForDecl && "TypeForDecl present in slow case")(static_cast <bool> (!Decl->TypeForDecl && "TypeForDecl present in slow case"
) ? void (0) : __assert_fail ("!Decl->TypeForDecl && \"TypeForDecl present in slow case\""
, "clang/lib/AST/ASTContext.cpp", 4687, __extension__ __PRETTY_FUNCTION__
));

if (const auto *Typedef = dyn_cast<TypedefNameDecl>(Decl))
  return getTypedefType(Typedef);

assert(!isa<TemplateTypeParmDecl>(Decl) &&(static_cast <bool> (!isa<TemplateTypeParmDecl>(Decl
) && "Template type parameter types are always available."
) ? void (0) : __assert_fail ("!isa<TemplateTypeParmDecl>(Decl) && \"Template type parameter types are always available.\""
, "clang/lib/AST/ASTContext.cpp", 4693, __extension__ __PRETTY_FUNCTION__
))
       "Template type parameter types are always available.")(static_cast <bool> (!isa<TemplateTypeParmDecl>(Decl
) && "Template type parameter types are always available."
) ? void (0) : __assert_fail ("!isa<TemplateTypeParmDecl>(Decl) && \"Template type parameter types are always available.\""
, "clang/lib/AST/ASTContext.cpp", 4693, __extension__ __PRETTY_FUNCTION__
));

if (const auto *Record = dyn_cast<RecordDecl>(Decl)) {
  assert(Record->isFirstDecl() && "struct/union has previous declaration")(static_cast <bool> (Record->isFirstDecl() &&
 "struct/union has previous declaration") ? void (0) : __assert_fail
 ("Record->isFirstDecl() && \"struct/union has previous declaration\""
, "clang/lib/AST/ASTContext.cpp", 4696, __extension__ __PRETTY_FUNCTION__
));
  assert(!NeedsInjectedClassNameType(Record))(static_cast <bool> (!NeedsInjectedClassNameType(Record
)) ? void (0) : __assert_fail ("!NeedsInjectedClassNameType(Record)"
, "clang/lib/AST/ASTContext.cpp", 4697, __extension__ __PRETTY_FUNCTION__
));
  return getRecordType(Record);
} else if (const auto *Enum = dyn_cast<EnumDecl>(Decl)) {
  assert(Enum->isFirstDecl() && "enum has previous declaration")(static_cast <bool> (Enum->isFirstDecl() && "enum has previous declaration"
) ? void (0) : __assert_fail ("Enum->isFirstDecl() && \"enum has previous declaration\""
, "clang/lib/AST/ASTContext.cpp", 4700, __extension__ __PRETTY_FUNCTION__
));
  return getEnumType(Enum);
} else if (const auto *Using = dyn_cast<UnresolvedUsingTypenameDecl>(Decl)) {
  return getUnresolvedUsingType(Using);
} else
  llvm_unreachable("TypeDecl without a type?")::llvm::llvm_unreachable_internal("TypeDecl without a type?",
 "clang/lib/AST/ASTContext.cpp", 4705);

return QualType(Decl->TypeForDecl, 0);
4708}

4710/// getTypedefType - Return the unique reference to the type for the
4711/// specified typedef name decl.
4712QualType ASTContext::getTypedefType(const TypedefNameDecl *Decl,
                                  QualType Underlying) const {
if (!Decl->TypeForDecl) {
  if (Underlying.isNull())
    Underlying = Decl->getUnderlyingType();
  auto *NewType = new (*this, TypeAlignment) TypedefType(
      Type::Typedef, Decl, QualType(), getCanonicalType(Underlying));
  Decl->TypeForDecl = NewType;
  Types.push_back(NewType);
  return QualType(NewType, 0);
}
if (Underlying.isNull() || Decl->getUnderlyingType() == Underlying)
  return QualType(Decl->TypeForDecl, 0);
assert(hasSameType(Decl->getUnderlyingType(), Underlying))(static_cast <bool> (hasSameType(Decl->getUnderlyingType
(), Underlying)) ? void (0) : __assert_fail ("hasSameType(Decl->getUnderlyingType(), Underlying)"
, "clang/lib/AST/ASTContext.cpp", 4725, __extension__ __PRETTY_FUNCTION__
));

llvm::FoldingSetNodeID ID;
TypedefType::Profile(ID, Decl, Underlying);

void *InsertPos = nullptr;
if (TypedefType *T = TypedefTypes.FindNodeOrInsertPos(ID, InsertPos)) {
  assert(!T->typeMatchesDecl() &&(static_cast <bool> (!T->typeMatchesDecl() &&
 "non-divergent case should be handled with TypeDecl") ? void
 (0) : __assert_fail ("!T->typeMatchesDecl() && \"non-divergent case should be handled with TypeDecl\""
, "clang/lib/AST/ASTContext.cpp", 4733, __extension__ __PRETTY_FUNCTION__
))
         "non-divergent case should be handled with TypeDecl")(static_cast <bool> (!T->typeMatchesDecl() &&
 "non-divergent case should be handled with TypeDecl") ? void
 (0) : __assert_fail ("!T->typeMatchesDecl() && \"non-divergent case should be handled with TypeDecl\""
, "clang/lib/AST/ASTContext.cpp", 4733, __extension__ __PRETTY_FUNCTION__
));
  return QualType(T, 0);
}

void *Mem =
    Allocate(TypedefType::totalSizeToAlloc<QualType>(true), TypeAlignment);
auto *NewType = new (Mem) TypedefType(Type::Typedef, Decl, Underlying,
                                      getCanonicalType(Underlying));
TypedefTypes.InsertNode(NewType, InsertPos);
Types.push_back(NewType);
return QualType(NewType, 0);
4744}

4746QualType ASTContext::getUsingType(const UsingShadowDecl *Found,
                                QualType Underlying) const {
llvm::FoldingSetNodeID ID;
UsingType::Profile(ID, Found, Underlying);

void *InsertPos = nullptr;
if (UsingType *T = UsingTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(T, 0);

const Type *TypeForDecl =
    cast<TypeDecl>(Found->getTargetDecl())->getTypeForDecl();

assert(!Underlying.hasLocalQualifiers())(static_cast <bool> (!Underlying.hasLocalQualifiers()) ?
 void (0) : __assert_fail ("!Underlying.hasLocalQualifiers()"
, "clang/lib/AST/ASTContext.cpp", 4758, __extension__ __PRETTY_FUNCTION__
));
QualType Canon = Underlying->getCanonicalTypeInternal();
assert(TypeForDecl->getCanonicalTypeInternal() == Canon)(static_cast <bool> (TypeForDecl->getCanonicalTypeInternal
() == Canon) ? void (0) : __assert_fail ("TypeForDecl->getCanonicalTypeInternal() == Canon"
, "clang/lib/AST/ASTContext.cpp", 4760, __extension__ __PRETTY_FUNCTION__
));

if (Underlying.getTypePtr() == TypeForDecl)
  Underlying = QualType();
void *Mem =
    Allocate(UsingType::totalSizeToAlloc<QualType>(!Underlying.isNull()),
             TypeAlignment);
UsingType *NewType = new (Mem) UsingType(Found, Underlying, Canon);
Types.push_back(NewType);
UsingTypes.InsertNode(NewType, InsertPos);
return QualType(NewType, 0);
4771}

4773QualType ASTContext::getRecordType(const RecordDecl *Decl) const {
if (Decl->TypeForDecl) return QualType(Decl->TypeForDecl, 0);

if (const RecordDecl *PrevDecl = Decl->getPreviousDecl())
  if (PrevDecl->TypeForDecl)
    return QualType(Decl->TypeForDecl = PrevDecl->TypeForDecl, 0);

auto *newType = new (*this, TypeAlignment) RecordType(Decl);
Decl->TypeForDecl = newType;
Types.push_back(newType);
return QualType(newType, 0);
4784}

4786QualType ASTContext::getEnumType(const EnumDecl *Decl) const {
if (Decl->TypeForDecl) return QualType(Decl->TypeForDecl, 0);

if (const EnumDecl *PrevDecl = Decl->getPreviousDecl())
  if (PrevDecl->TypeForDecl)
    return QualType(Decl->TypeForDecl = PrevDecl->TypeForDecl, 0);

auto *newType = new (*this, TypeAlignment) EnumType(Decl);
Decl->TypeForDecl = newType;
Types.push_back(newType);
return QualType(newType, 0);
4797}

4799QualType ASTContext::getUnresolvedUsingType(
  const UnresolvedUsingTypenameDecl *Decl) const {
if (Decl->TypeForDecl)
  return QualType(Decl->TypeForDecl, 0);

if (const UnresolvedUsingTypenameDecl *CanonicalDecl =
        Decl->getCanonicalDecl())
  if (CanonicalDecl->TypeForDecl)
    return QualType(Decl->TypeForDecl = CanonicalDecl->TypeForDecl, 0);

Type *newType = new (*this, TypeAlignment) UnresolvedUsingType(Decl);
Decl->TypeForDecl = newType;
Types.push_back(newType);
return QualType(newType, 0);
4813}

4815QualType ASTContext::getAttributedType(attr::Kind attrKind,
                                     QualType modifiedType,
                                     QualType equivalentType) const {
llvm::FoldingSetNodeID id;
AttributedType::Profile(id, attrKind, modifiedType, equivalentType);

void *insertPos = nullptr;
AttributedType *type = AttributedTypes.FindNodeOrInsertPos(id, insertPos);
if (type) return QualType(type, 0);

QualType canon = getCanonicalType(equivalentType);
type = new (*this, TypeAlignment)
    AttributedType(canon, attrKind, modifiedType, equivalentType);

Types.push_back(type);
AttributedTypes.InsertNode(type, insertPos);

return QualType(type, 0);
4833}

4835QualType ASTContext::getBTFTagAttributedType(const BTFTypeTagAttr *BTFAttr,
                                           QualType Wrapped) {
llvm::FoldingSetNodeID ID;
BTFTagAttributedType::Profile(ID, Wrapped, BTFAttr);

void *InsertPos = nullptr;
BTFTagAttributedType *Ty =
    BTFTagAttributedTypes.FindNodeOrInsertPos(ID, InsertPos);
if (Ty)
  return QualType(Ty, 0);

QualType Canon = getCanonicalType(Wrapped);
Ty = new (*this, TypeAlignment) BTFTagAttributedType(Canon, Wrapped, BTFAttr);

Types.push_back(Ty);
BTFTagAttributedTypes.InsertNode(Ty, InsertPos);

return QualType(Ty, 0);
4853}

4855/// Retrieve a substitution-result type.
4856QualType ASTContext::getSubstTemplateTypeParmType(
  QualType Replacement, Decl *AssociatedDecl, unsigned Index,
  std::optional<unsigned> PackIndex) const {
llvm::FoldingSetNodeID ID;
SubstTemplateTypeParmType::Profile(ID, Replacement, AssociatedDecl, Index,
                                   PackIndex);
void *InsertPos = nullptr;
SubstTemplateTypeParmType *SubstParm =
    SubstTemplateTypeParmTypes.FindNodeOrInsertPos(ID, InsertPos);

if (!SubstParm) {
  void *Mem = Allocate(SubstTemplateTypeParmType::totalSizeToAlloc<QualType>(
                           !Replacement.isCanonical()),
                       TypeAlignment);
  SubstParm = new (Mem) SubstTemplateTypeParmType(Replacement, AssociatedDecl,
                                                  Index, PackIndex);
  Types.push_back(SubstParm);
  SubstTemplateTypeParmTypes.InsertNode(SubstParm, InsertPos);
}

return QualType(SubstParm, 0);
4877}

4879/// Retrieve a
4880QualType
4881ASTContext::getSubstTemplateTypeParmPackType(Decl *AssociatedDecl,
                                           unsigned Index, bool Final,
                                           const TemplateArgument &ArgPack) {
4884#ifndef NDEBUG
for (const auto &P : ArgPack.pack_elements())
  assert(P.getKind() == TemplateArgument::Type && "Pack contains a non-type")(static_cast <bool> (P.getKind() == TemplateArgument::Type
 && "Pack contains a non-type") ? void (0) : __assert_fail
 ("P.getKind() == TemplateArgument::Type && \"Pack contains a non-type\""
, "clang/lib/AST/ASTContext.cpp", 4886, __extension__ __PRETTY_FUNCTION__
));
4887#endif

llvm::FoldingSetNodeID ID;
SubstTemplateTypeParmPackType::Profile(ID, AssociatedDecl, Index, Final,
                                       ArgPack);
void *InsertPos = nullptr;
if (SubstTemplateTypeParmPackType *SubstParm =
        SubstTemplateTypeParmPackTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(SubstParm, 0);

QualType Canon;
{
  TemplateArgument CanonArgPack = getCanonicalTemplateArgument(ArgPack);
  if (!AssociatedDecl->isCanonicalDecl() ||
      !CanonArgPack.structurallyEquals(ArgPack)) {
    Canon = getSubstTemplateTypeParmPackType(
        AssociatedDecl->getCanonicalDecl(), Index, Final, CanonArgPack);
    [[maybe_unused]] const auto *Nothing =
        SubstTemplateTypeParmPackTypes.FindNodeOrInsertPos(ID, InsertPos);
    assert(!Nothing)(static_cast <bool> (!Nothing) ? void (0) : __assert_fail
 ("!Nothing", "clang/lib/AST/ASTContext.cpp", 4906, __extension__
 __PRETTY_FUNCTION__));
  }
}

auto *SubstParm = new (*this, TypeAlignment) SubstTemplateTypeParmPackType(
    Canon, AssociatedDecl, Index, Final, ArgPack);
Types.push_back(SubstParm);
SubstTemplateTypeParmPackTypes.InsertNode(SubstParm, InsertPos);
return QualType(SubstParm, 0);
4915}

4917/// Retrieve the template type parameter type for a template
4918/// parameter or parameter pack with the given depth, index, and (optionally)
4919/// name.
4920QualType ASTContext::getTemplateTypeParmType(unsigned Depth, unsigned Index,
                                           bool ParameterPack,
                                           TemplateTypeParmDecl *TTPDecl) const {
llvm::FoldingSetNodeID ID;
TemplateTypeParmType::Profile(ID, Depth, Index, ParameterPack, TTPDecl);
void *InsertPos = nullptr;
TemplateTypeParmType *TypeParm
  = TemplateTypeParmTypes.FindNodeOrInsertPos(ID, InsertPos);

if (TypeParm)
  return QualType(TypeParm, 0);

if (TTPDecl) {
  QualType Canon = getTemplateTypeParmType(Depth, Index, ParameterPack);
  TypeParm = new (*this, TypeAlignment) TemplateTypeParmType(TTPDecl, Canon);

  TemplateTypeParmType *TypeCheck
    = TemplateTypeParmTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!TypeCheck && "Template type parameter canonical type broken")(static_cast <bool> (!TypeCheck && "Template type parameter canonical type broken"
) ? void (0) : __assert_fail ("!TypeCheck && \"Template type parameter canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 4938, __extension__ __PRETTY_FUNCTION__
));
  (void)TypeCheck;
} else
  TypeParm = new (*this, TypeAlignment)
    TemplateTypeParmType(Depth, Index, ParameterPack);

Types.push_back(TypeParm);
TemplateTypeParmTypes.InsertNode(TypeParm, InsertPos);

return QualType(TypeParm, 0);
4948}

4950TypeSourceInfo *
4951ASTContext::getTemplateSpecializationTypeInfo(TemplateName Name,
                                            SourceLocation NameLoc,
                                      const TemplateArgumentListInfo &Args,
                                            QualType Underlying) const {
assert(!Name.getAsDependentTemplateName() &&(static_cast <bool> (!Name.getAsDependentTemplateName()
 && "No dependent template names here!") ? void (0) :
 __assert_fail ("!Name.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 4956, __extension__ __PRETTY_FUNCTION__
))
       "No dependent template names here!")(static_cast <bool> (!Name.getAsDependentTemplateName()
 && "No dependent template names here!") ? void (0) :
 __assert_fail ("!Name.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 4956, __extension__ __PRETTY_FUNCTION__
));
QualType TST =
    getTemplateSpecializationType(Name, Args.arguments(), Underlying);

TypeSourceInfo *DI = CreateTypeSourceInfo(TST);
TemplateSpecializationTypeLoc TL =
    DI->getTypeLoc().castAs<TemplateSpecializationTypeLoc>();
TL.setTemplateKeywordLoc(SourceLocation());
TL.setTemplateNameLoc(NameLoc);
TL.setLAngleLoc(Args.getLAngleLoc());
TL.setRAngleLoc(Args.getRAngleLoc());
for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
  TL.setArgLocInfo(i, Args[i].getLocInfo());
return DI;
4970}

4972QualType
4973ASTContext::getTemplateSpecializationType(TemplateName Template,
                                        ArrayRef<TemplateArgumentLoc> Args,
                                        QualType Underlying) const {
assert(!Template.getAsDependentTemplateName() &&(static_cast <bool> (!Template.getAsDependentTemplateName
() && "No dependent template names here!") ? void (0)
 : __assert_fail ("!Template.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 4977, __extension__ __PRETTY_FUNCTION__
))
       "No dependent template names here!")(static_cast <bool> (!Template.getAsDependentTemplateName
() && "No dependent template names here!") ? void (0)
 : __assert_fail ("!Template.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 4977, __extension__ __PRETTY_FUNCTION__
));

SmallVector<TemplateArgument, 4> ArgVec;
ArgVec.reserve(Args.size());
for (const TemplateArgumentLoc &Arg : Args)
  ArgVec.push_back(Arg.getArgument());

return getTemplateSpecializationType(Template, ArgVec, Underlying);
4985}

4987#ifndef NDEBUG
4988static bool hasAnyPackExpansions(ArrayRef<TemplateArgument> Args) {
for (const TemplateArgument &Arg : Args)
  if (Arg.isPackExpansion())
    return true;

return true;
4994}
4995#endif

4997QualType
4998ASTContext::getTemplateSpecializationType(TemplateName Template,
                                        ArrayRef<TemplateArgument> Args,
                                        QualType Underlying) const {
assert(!Template.getAsDependentTemplateName() &&(static_cast <bool> (!Template.getAsDependentTemplateName
() && "No dependent template names here!") ? void (0)
 : __assert_fail ("!Template.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 5002, __extension__ __PRETTY_FUNCTION__
))
       "No dependent template names here!")(static_cast <bool> (!Template.getAsDependentTemplateName
() && "No dependent template names here!") ? void (0)
 : __assert_fail ("!Template.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 5002, __extension__ __PRETTY_FUNCTION__
));
// Look through qualified template names.
if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName())
  Template = QTN->getUnderlyingTemplate();

const auto *TD = Template.getAsTemplateDecl();
bool IsTypeAlias = TD && TD->isTypeAlias();
QualType CanonType;
if (!Underlying.isNull())
  CanonType = getCanonicalType(Underlying);
else {
  // We can get here with an alias template when the specialization contains
  // a pack expansion that does not match up with a parameter pack.
  assert((!IsTypeAlias || hasAnyPackExpansions(Args)) &&(static_cast <bool> ((!IsTypeAlias || hasAnyPackExpansions
(Args)) && "Caller must compute aliased type") ? void
 (0) : __assert_fail ("(!IsTypeAlias || hasAnyPackExpansions(Args)) && \"Caller must compute aliased type\""
, "clang/lib/AST/ASTContext.cpp", 5016, __extension__ __PRETTY_FUNCTION__
))
         "Caller must compute aliased type")(static_cast <bool> ((!IsTypeAlias || hasAnyPackExpansions
(Args)) && "Caller must compute aliased type") ? void
 (0) : __assert_fail ("(!IsTypeAlias || hasAnyPackExpansions(Args)) && \"Caller must compute aliased type\""
, "clang/lib/AST/ASTContext.cpp", 5016, __extension__ __PRETTY_FUNCTION__
));
  IsTypeAlias = false;
  CanonType = getCanonicalTemplateSpecializationType(Template, Args);
}

// Allocate the (non-canonical) template specialization type, but don't
// try to unique it: these types typically have location information that
// we don't unique and don't want to lose.
void *Mem = Allocate(sizeof(TemplateSpecializationType) +
                     sizeof(TemplateArgument) * Args.size() +
                     (IsTypeAlias? sizeof(QualType) : 0),
                     TypeAlignment);
auto *Spec
  = new (Mem) TemplateSpecializationType(Template, Args, CanonType,
                                       IsTypeAlias ? Underlying : QualType());

Types.push_back(Spec);
return QualType(Spec, 0);
5034}

5036QualType ASTContext::getCanonicalTemplateSpecializationType(
  TemplateName Template, ArrayRef<TemplateArgument> Args) const {
assert(!Template.getAsDependentTemplateName() &&(static_cast <bool> (!Template.getAsDependentTemplateName
() && "No dependent template names here!") ? void (0)
 : __assert_fail ("!Template.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 5039, __extension__ __PRETTY_FUNCTION__
))
       "No dependent template names here!")(static_cast <bool> (!Template.getAsDependentTemplateName
() && "No dependent template names here!") ? void (0)
 : __assert_fail ("!Template.getAsDependentTemplateName() && \"No dependent template names here!\""
, "clang/lib/AST/ASTContext.cpp", 5039, __extension__ __PRETTY_FUNCTION__
));

// Look through qualified template names.
if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName())
  Template = TemplateName(QTN->getUnderlyingTemplate());

// Build the canonical template specialization type.
TemplateName CanonTemplate = getCanonicalTemplateName(Template);
bool AnyNonCanonArgs = false;
auto CanonArgs =
    ::getCanonicalTemplateArguments(*this, Args, AnyNonCanonArgs);

// Determine whether this canonical template specialization type already
// exists.
llvm::FoldingSetNodeID ID;
TemplateSpecializationType::Profile(ID, CanonTemplate,
                                    CanonArgs, *this);

void *InsertPos = nullptr;
TemplateSpecializationType *Spec
  = TemplateSpecializationTypes.FindNodeOrInsertPos(ID, InsertPos);

if (!Spec) {
  // Allocate a new canonical template specialization type.
  void *Mem = Allocate((sizeof(TemplateSpecializationType) +
                        sizeof(TemplateArgument) * CanonArgs.size()),
                       TypeAlignment);
  Spec = new (Mem) TemplateSpecializationType(CanonTemplate,
                                              CanonArgs,
                                              QualType(), QualType());
  Types.push_back(Spec);
  TemplateSpecializationTypes.InsertNode(Spec, InsertPos);
}

assert(Spec->isDependentType() &&(static_cast <bool> (Spec->isDependentType() &&
 "Non-dependent template-id type must have a canonical type")
 ? void (0) : __assert_fail ("Spec->isDependentType() && \"Non-dependent template-id type must have a canonical type\""
, "clang/lib/AST/ASTContext.cpp", 5074, __extension__ __PRETTY_FUNCTION__
))
       "Non-dependent template-id type must have a canonical type")(static_cast <bool> (Spec->isDependentType() &&
 "Non-dependent template-id type must have a canonical type")
 ? void (0) : __assert_fail ("Spec->isDependentType() && \"Non-dependent template-id type must have a canonical type\""
, "clang/lib/AST/ASTContext.cpp", 5074, __extension__ __PRETTY_FUNCTION__
));
return QualType(Spec, 0);
5076}

5078QualType ASTContext::getElaboratedType(ElaboratedTypeKeyword Keyword,
                                     NestedNameSpecifier *NNS,
                                     QualType NamedType,
                                     TagDecl *OwnedTagDecl) const {
llvm::FoldingSetNodeID ID;
ElaboratedType::Profile(ID, Keyword, NNS, NamedType, OwnedTagDecl);

void *InsertPos = nullptr;
ElaboratedType *T = ElaboratedTypes.FindNodeOrInsertPos(ID, InsertPos);
if (T)
  return QualType(T, 0);

QualType Canon = NamedType;
if (!Canon.isCanonical()) {
  Canon = getCanonicalType(NamedType);
  ElaboratedType *CheckT = ElaboratedTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!CheckT && "Elaborated canonical type broken")(static_cast <bool> (!CheckT && "Elaborated canonical type broken"
) ? void (0) : __assert_fail ("!CheckT && \"Elaborated canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 5094, __extension__ __PRETTY_FUNCTION__
));
  (void)CheckT;
}

void *Mem = Allocate(ElaboratedType::totalSizeToAlloc<TagDecl *>(!!OwnedTagDecl),
                     TypeAlignment);
T = new (Mem) ElaboratedType(Keyword, NNS, NamedType, Canon, OwnedTagDecl);

Types.push_back(T);
ElaboratedTypes.InsertNode(T, InsertPos);
return QualType(T, 0);
5105}

5107QualType
5108ASTContext::getParenType(QualType InnerType) const {
llvm::FoldingSetNodeID ID;
ParenType::Profile(ID, InnerType);

void *InsertPos = nullptr;
ParenType *T = ParenTypes.FindNodeOrInsertPos(ID, InsertPos);
if (T)
  return QualType(T, 0);

QualType Canon = InnerType;
if (!Canon.isCanonical()) {
  Canon = getCanonicalType(InnerType);
  ParenType *CheckT = ParenTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!CheckT && "Paren canonical type broken")(static_cast <bool> (!CheckT && "Paren canonical type broken"
) ? void (0) : __assert_fail ("!CheckT && \"Paren canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 5121, __extension__ __PRETTY_FUNCTION__
));
  (void)CheckT;
}

T = new (*this, TypeAlignment) ParenType(InnerType, Canon);
Types.push_back(T);
ParenTypes.InsertNode(T, InsertPos);
return QualType(T, 0);
5129}

5131QualType
5132ASTContext::getMacroQualifiedType(QualType UnderlyingTy,
                                const IdentifierInfo *MacroII) const {
QualType Canon = UnderlyingTy;
if (!Canon.isCanonical())
  Canon = getCanonicalType(UnderlyingTy);

auto *newType = new (*this, TypeAlignment)
    MacroQualifiedType(UnderlyingTy, Canon, MacroII);
Types.push_back(newType);
return QualType(newType, 0);
5142}

5144QualType ASTContext::getDependentNameType(ElaboratedTypeKeyword Keyword,
                                        NestedNameSpecifier *NNS,
                                        const IdentifierInfo *Name,
                                        QualType Canon) const {
if (Canon.isNull()) {
  NestedNameSpecifier *CanonNNS = getCanonicalNestedNameSpecifier(NNS);
  if (CanonNNS != NNS)
    Canon = getDependentNameType(Keyword, CanonNNS, Name);
}

llvm::FoldingSetNodeID ID;
DependentNameType::Profile(ID, Keyword, NNS, Name);

void *InsertPos = nullptr;
DependentNameType *T
  = DependentNameTypes.FindNodeOrInsertPos(ID, InsertPos);
if (T)
  return QualType(T, 0);

T = new (*this, TypeAlignment) DependentNameType(Keyword, NNS, Name, Canon);
Types.push_back(T);
DependentNameTypes.InsertNode(T, InsertPos);
return QualType(T, 0);
5167}

5169QualType ASTContext::getDependentTemplateSpecializationType(
  ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS,
  const IdentifierInfo *Name, ArrayRef<TemplateArgumentLoc> Args) const {
// TODO: avoid this copy
SmallVector<TemplateArgument, 16> ArgCopy;
for (unsigned I = 0, E = Args.size(); I != E; ++I)
  ArgCopy.push_back(Args[I].getArgument());
return getDependentTemplateSpecializationType(Keyword, NNS, Name, ArgCopy);
5177}

5179QualType
5180ASTContext::getDependentTemplateSpecializationType(
                               ElaboratedTypeKeyword Keyword,
                               NestedNameSpecifier *NNS,
                               const IdentifierInfo *Name,
                               ArrayRef<TemplateArgument> Args) const {
assert((!NNS || NNS->isDependent()) &&(static_cast <bool> ((!NNS || NNS->isDependent()) &&
 "nested-name-specifier must be dependent") ? void (0) : __assert_fail
 ("(!NNS || NNS->isDependent()) && \"nested-name-specifier must be dependent\""
, "clang/lib/AST/ASTContext.cpp", 5186, __extension__ __PRETTY_FUNCTION__
))
       "nested-name-specifier must be dependent")(static_cast <bool> ((!NNS || NNS->isDependent()) &&
 "nested-name-specifier must be dependent") ? void (0) : __assert_fail
 ("(!NNS || NNS->isDependent()) && \"nested-name-specifier must be dependent\""
, "clang/lib/AST/ASTContext.cpp", 5186, __extension__ __PRETTY_FUNCTION__
));

llvm::FoldingSetNodeID ID;
DependentTemplateSpecializationType::Profile(ID, *this, Keyword, NNS,
                                             Name, Args);

void *InsertPos = nullptr;
DependentTemplateSpecializationType *T
  = DependentTemplateSpecializationTypes.FindNodeOrInsertPos(ID, InsertPos);
if (T)
  return QualType(T, 0);

NestedNameSpecifier *CanonNNS = getCanonicalNestedNameSpecifier(NNS);

ElaboratedTypeKeyword CanonKeyword = Keyword;
if (Keyword == ETK_None) CanonKeyword = ETK_Typename;

bool AnyNonCanonArgs = false;
auto CanonArgs =
    ::getCanonicalTemplateArguments(*this, Args, AnyNonCanonArgs);

QualType Canon;
if (AnyNonCanonArgs || CanonNNS != NNS || CanonKeyword != Keyword) {
  Canon = getDependentTemplateSpecializationType(CanonKeyword, CanonNNS,
                                                 Name,
                                                 CanonArgs);

  // Find the insert position again.
  [[maybe_unused]] auto *Nothing =
      DependentTemplateSpecializationTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!Nothing && "canonical type broken")(static_cast <bool> (!Nothing && "canonical type broken"
) ? void (0) : __assert_fail ("!Nothing && \"canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 5216, __extension__ __PRETTY_FUNCTION__
));
}

void *Mem = Allocate((sizeof(DependentTemplateSpecializationType) +
                      sizeof(TemplateArgument) * Args.size()),
                     TypeAlignment);
T = new (Mem) DependentTemplateSpecializationType(Keyword, NNS,
                                                  Name, Args, Canon);
Types.push_back(T);
DependentTemplateSpecializationTypes.InsertNode(T, InsertPos);
return QualType(T, 0);
5227}

5229TemplateArgument ASTContext::getInjectedTemplateArg(NamedDecl *Param) {
TemplateArgument Arg;
if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(Param)) {
  QualType ArgType = getTypeDeclType(TTP);
  if (TTP->isParameterPack())
    ArgType = getPackExpansionType(ArgType, std::nullopt);

  Arg = TemplateArgument(ArgType);
} else if (auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(Param)) {
  QualType T =
      NTTP->getType().getNonPackExpansionType().getNonLValueExprType(*this);
  // For class NTTPs, ensure we include the 'const' so the type matches that
  // of a real template argument.
  // FIXME: It would be more faithful to model this as something like an
  // lvalue-to-rvalue conversion applied to a const-qualified lvalue.
  if (T->isRecordType())
    T.addConst();
  Expr *E = new (*this) DeclRefExpr(
      *this, NTTP, /*RefersToEnclosingVariableOrCapture*/ false, T,
      Expr::getValueKindForType(NTTP->getType()), NTTP->getLocation());

  if (NTTP->isParameterPack())
    E = new (*this)
        PackExpansionExpr(DependentTy, E, NTTP->getLocation(), std::nullopt);
  Arg = TemplateArgument(E);
} else {
  auto *TTP = cast<TemplateTemplateParmDecl>(Param);
  if (TTP->isParameterPack())
    Arg = TemplateArgument(TemplateName(TTP), std::optional<unsigned>());
  else
    Arg = TemplateArgument(TemplateName(TTP));
}

if (Param->isTemplateParameterPack())
  Arg = TemplateArgument::CreatePackCopy(*this, Arg);

return Arg;
5266}

5268void
5269ASTContext::getInjectedTemplateArgs(const TemplateParameterList *Params,
                                  SmallVectorImpl<TemplateArgument> &Args) {
Args.reserve(Args.size() + Params->size());

for (NamedDecl *Param : *Params)
  Args.push_back(getInjectedTemplateArg(Param));
5275}

5277QualType ASTContext::getPackExpansionType(QualType Pattern,
                                        std::optional<unsigned> NumExpansions,
                                        bool ExpectPackInType) {
assert((!ExpectPackInType || Pattern->containsUnexpandedParameterPack()) &&(static_cast <bool> ((!ExpectPackInType || Pattern->
containsUnexpandedParameterPack()) && "Pack expansions must expand one or more parameter packs"
) ? void (0) : __assert_fail ("(!ExpectPackInType || Pattern->containsUnexpandedParameterPack()) && \"Pack expansions must expand one or more parameter packs\""
, "clang/lib/AST/ASTContext.cpp", 5281, __extension__ __PRETTY_FUNCTION__
))
       "Pack expansions must expand one or more parameter packs")(static_cast <bool> ((!ExpectPackInType || Pattern->
containsUnexpandedParameterPack()) && "Pack expansions must expand one or more parameter packs"
) ? void (0) : __assert_fail ("(!ExpectPackInType || Pattern->containsUnexpandedParameterPack()) && \"Pack expansions must expand one or more parameter packs\""
, "clang/lib/AST/ASTContext.cpp", 5281, __extension__ __PRETTY_FUNCTION__
));

llvm::FoldingSetNodeID ID;
PackExpansionType::Profile(ID, Pattern, NumExpansions);

void *InsertPos = nullptr;
PackExpansionType *T = PackExpansionTypes.FindNodeOrInsertPos(ID, InsertPos);
if (T)
  return QualType(T, 0);

QualType Canon;
if (!Pattern.isCanonical()) {
  Canon = getPackExpansionType(getCanonicalType(Pattern), NumExpansions,
                               /*ExpectPackInType=*/false);

  // Find the insert position again, in case we inserted an element into
  // PackExpansionTypes and invalidated our insert position.
  PackExpansionTypes.FindNodeOrInsertPos(ID, InsertPos);
}

T = new (*this, TypeAlignment)
    PackExpansionType(Pattern, Canon, NumExpansions);
Types.push_back(T);
PackExpansionTypes.InsertNode(T, InsertPos);
return QualType(T, 0);
5306}

5308/// CmpProtocolNames - Comparison predicate for sorting protocols
5309/// alphabetically.
5310static int CmpProtocolNames(ObjCProtocolDecl *const *LHS,
                          ObjCProtocolDecl *const *RHS) {
return DeclarationName::compare((*LHS)->getDeclName(), (*RHS)->getDeclName());
5313}

5315static bool areSortedAndUniqued(ArrayRef<ObjCProtocolDecl *> Protocols) {
if (Protocols.empty()) return true;

if (Protocols[0]->getCanonicalDecl() != Protocols[0])
  return false;

for (unsigned i = 1; i != Protocols.size(); ++i)
  if (CmpProtocolNames(&Protocols[i - 1], &Protocols[i]) >= 0 ||
      Protocols[i]->getCanonicalDecl() != Protocols[i])
    return false;
return true;
5326}

5328static void
5329SortAndUniqueProtocols(SmallVectorImpl<ObjCProtocolDecl *> &Protocols) {
// Sort protocols, keyed by name.
llvm::array_pod_sort(Protocols.begin(), Protocols.end(), CmpProtocolNames);

// Canonicalize.
for (ObjCProtocolDecl *&P : Protocols)
  P = P->getCanonicalDecl();

// Remove duplicates.
auto ProtocolsEnd = std::unique(Protocols.begin(), Protocols.end());
Protocols.erase(ProtocolsEnd, Protocols.end());
5340}

5342QualType ASTContext::getObjCObjectType(QualType BaseType,
                                     ObjCProtocolDecl * const *Protocols,
                                     unsigned NumProtocols) const {
return getObjCObjectType(BaseType, {},
                         llvm::ArrayRef(Protocols, NumProtocols),
                         /*isKindOf=*/false);
5348}

5350QualType ASTContext::getObjCObjectType(
         QualType baseType,
         ArrayRef<QualType> typeArgs,
         ArrayRef<ObjCProtocolDecl *> protocols,
         bool isKindOf) const {
// If the base type is an interface and there aren't any protocols or
// type arguments to add, then the interface type will do just fine.
if (typeArgs.empty() && protocols.empty() && !isKindOf &&
    isa<ObjCInterfaceType>(baseType))
  return baseType;

// Look in the folding set for an existing type.
llvm::FoldingSetNodeID ID;
ObjCObjectTypeImpl::Profile(ID, baseType, typeArgs, protocols, isKindOf);
void *InsertPos = nullptr;
if (ObjCObjectType *QT = ObjCObjectTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(QT, 0);

// Determine the type arguments to be used for canonicalization,
// which may be explicitly specified here or written on the base
// type.
ArrayRef<QualType> effectiveTypeArgs = typeArgs;
if (effectiveTypeArgs.empty()) {
  if (const auto *baseObject = baseType->getAs<ObjCObjectType>())
    effectiveTypeArgs = baseObject->getTypeArgs();
}

// Build the canonical type, which has the canonical base type and a
// sorted-and-uniqued list of protocols and the type arguments
// canonicalized.
QualType canonical;
bool typeArgsAreCanonical = llvm::all_of(
    effectiveTypeArgs, [&](QualType type) { return type.isCanonical(); });
bool protocolsSorted = areSortedAndUniqued(protocols);
if (!typeArgsAreCanonical || !protocolsSorted || !baseType.isCanonical()) {
  // Determine the canonical type arguments.
  ArrayRef<QualType> canonTypeArgs;
  SmallVector<QualType, 4> canonTypeArgsVec;
  if (!typeArgsAreCanonical) {
    canonTypeArgsVec.reserve(effectiveTypeArgs.size());
    for (auto typeArg : effectiveTypeArgs)
      canonTypeArgsVec.push_back(getCanonicalType(typeArg));
    canonTypeArgs = canonTypeArgsVec;
  } else {
    canonTypeArgs = effectiveTypeArgs;
  }

  ArrayRef<ObjCProtocolDecl *> canonProtocols;
  SmallVector<ObjCProtocolDecl*, 8> canonProtocolsVec;
  if (!protocolsSorted) {
    canonProtocolsVec.append(protocols.begin(), protocols.end());
    SortAndUniqueProtocols(canonProtocolsVec);
    canonProtocols = canonProtocolsVec;
  } else {
    canonProtocols = protocols;
  }

  canonical = getObjCObjectType(getCanonicalType(baseType), canonTypeArgs,
                                canonProtocols, isKindOf);

  // Regenerate InsertPos.
  ObjCObjectTypes.FindNodeOrInsertPos(ID, InsertPos);
}

unsigned size = sizeof(ObjCObjectTypeImpl);
size += typeArgs.size() * sizeof(QualType);
size += protocols.size() * sizeof(ObjCProtocolDecl *);
void *mem = Allocate(size, TypeAlignment);
auto *T =
  new (mem) ObjCObjectTypeImpl(canonical, baseType, typeArgs, protocols,
                               isKindOf);

Types.push_back(T);
ObjCObjectTypes.InsertNode(T, InsertPos);
return QualType(T, 0);
5425}

5427/// Apply Objective-C protocol qualifiers to the given type.
5428/// If this is for the canonical type of a type parameter, we can apply
5429/// protocol qualifiers on the ObjCObjectPointerType.
5430QualType
5431ASTContext::applyObjCProtocolQualifiers(QualType type,
                ArrayRef<ObjCProtocolDecl *> protocols, bool &hasError,
                bool allowOnPointerType) const {
hasError = false;

if (const auto *objT = dyn_cast<ObjCTypeParamType>(type.getTypePtr())) {
  return getObjCTypeParamType(objT->getDecl(), protocols);
}

// Apply protocol qualifiers to ObjCObjectPointerType.
if (allowOnPointerType) {
  if (const auto *objPtr =
          dyn_cast<ObjCObjectPointerType>(type.getTypePtr())) {
    const ObjCObjectType *objT = objPtr->getObjectType();
    // Merge protocol lists and construct ObjCObjectType.
    SmallVector<ObjCProtocolDecl*, 8> protocolsVec;
    protocolsVec.append(objT->qual_begin(),
                        objT->qual_end());
    protocolsVec.append(protocols.begin(), protocols.end());
    ArrayRef<ObjCProtocolDecl *> protocols = protocolsVec;
    type = getObjCObjectType(
           objT->getBaseType(),
           objT->getTypeArgsAsWritten(),
           protocols,
           objT->isKindOfTypeAsWritten());
    return getObjCObjectPointerType(type);
  }
}

// Apply protocol qualifiers to ObjCObjectType.
if (const auto *objT = dyn_cast<ObjCObjectType>(type.getTypePtr())){
  // FIXME: Check for protocols to which the class type is already
  // known to conform.

  return getObjCObjectType(objT->getBaseType(),
                           objT->getTypeArgsAsWritten(),
                           protocols,
                           objT->isKindOfTypeAsWritten());
}

// If the canonical type is ObjCObjectType, ...
if (type->isObjCObjectType()) {
  // Silently overwrite any existing protocol qualifiers.
  // TODO: determine whether that's the right thing to do.

  // FIXME: Check for protocols to which the class type is already
  // known to conform.
  return getObjCObjectType(type, {}, protocols, false);
}

// id<protocol-list>
if (type->isObjCIdType()) {
  const auto *objPtr = type->castAs<ObjCObjectPointerType>();
  type = getObjCObjectType(ObjCBuiltinIdTy, {}, protocols,
                               objPtr->isKindOfType());
  return getObjCObjectPointerType(type);
}

// Class<protocol-list>
if (type->isObjCClassType()) {
  const auto *objPtr = type->castAs<ObjCObjectPointerType>();
  type = getObjCObjectType(ObjCBuiltinClassTy, {}, protocols,
                               objPtr->isKindOfType());
  return getObjCObjectPointerType(type);
}

hasError = true;
return type;
5499}

5501QualType
5502ASTContext::getObjCTypeParamType(const ObjCTypeParamDecl *Decl,
                               ArrayRef<ObjCProtocolDecl *> protocols) const {
// Look in the folding set for an existing type.
llvm::FoldingSetNodeID ID;
ObjCTypeParamType::Profile(ID, Decl, Decl->getUnderlyingType(), protocols);
void *InsertPos = nullptr;
if (ObjCTypeParamType *TypeParam =
    ObjCTypeParamTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(TypeParam, 0);

// We canonicalize to the underlying type.
QualType Canonical = getCanonicalType(Decl->getUnderlyingType());
if (!protocols.empty()) {
  // Apply the protocol qualifers.
  bool hasError;
  Canonical = getCanonicalType(applyObjCProtocolQualifiers(
      Canonical, protocols, hasError, true /*allowOnPointerType*/));
  assert(!hasError && "Error when apply protocol qualifier to bound type")(static_cast <bool> (!hasError && "Error when apply protocol qualifier to bound type"
) ? void (0) : __assert_fail ("!hasError && \"Error when apply protocol qualifier to bound type\""
, "clang/lib/AST/ASTContext.cpp", 5519, __extension__ __PRETTY_FUNCTION__
));
}

unsigned size = sizeof(ObjCTypeParamType);
size += protocols.size() * sizeof(ObjCProtocolDecl *);
void *mem = Allocate(size, TypeAlignment);
auto *newType = new (mem) ObjCTypeParamType(Decl, Canonical, protocols);

Types.push_back(newType);
ObjCTypeParamTypes.InsertNode(newType, InsertPos);
return QualType(newType, 0);
5530}

5532void ASTContext::adjustObjCTypeParamBoundType(const ObjCTypeParamDecl *Orig,
                                            ObjCTypeParamDecl *New) const {
New->setTypeSourceInfo(getTrivialTypeSourceInfo(Orig->getUnderlyingType()));
// Update TypeForDecl after updating TypeSourceInfo.
auto NewTypeParamTy = cast<ObjCTypeParamType>(New->getTypeForDecl());
SmallVector<ObjCProtocolDecl *, 8> protocols;
protocols.append(NewTypeParamTy->qual_begin(), NewTypeParamTy->qual_end());
QualType UpdatedTy = getObjCTypeParamType(New, protocols);
New->setTypeForDecl(UpdatedTy.getTypePtr());
5541}

5543/// ObjCObjectAdoptsQTypeProtocols - Checks that protocols in IC's
5544/// protocol list adopt all protocols in QT's qualified-id protocol
5545/// list.
5546bool ASTContext::ObjCObjectAdoptsQTypeProtocols(QualType QT,
                                              ObjCInterfaceDecl *IC) {
if (!QT->isObjCQualifiedIdType())
  return false;

if (const auto *OPT = QT->getAs<ObjCObjectPointerType>()) {
  // If both the right and left sides have qualifiers.
  for (auto *Proto : OPT->quals()) {
    if (!IC->ClassImplementsProtocol(Proto, false))
      return false;
  }
  return true;
}
return false;
5560}

5562/// QIdProtocolsAdoptObjCObjectProtocols - Checks that protocols in
5563/// QT's qualified-id protocol list adopt all protocols in IDecl's list
5564/// of protocols.
5565bool ASTContext::QIdProtocolsAdoptObjCObjectProtocols(QualType QT,
                                              ObjCInterfaceDecl *IDecl) {
if (!QT->isObjCQualifiedIdType())
  return false;
const auto *OPT = QT->getAs<ObjCObjectPointerType>();
if (!OPT)
  return false;
if (!IDecl->hasDefinition())
  return false;
llvm::SmallPtrSet<ObjCProtocolDecl *, 8> InheritedProtocols;
CollectInheritedProtocols(IDecl, InheritedProtocols);
if (InheritedProtocols.empty())
  return false;
// Check that if every protocol in list of id<plist> conforms to a protocol
// of IDecl's, then bridge casting is ok.
bool Conforms = false;
for (auto *Proto : OPT->quals()) {
  Conforms = false;
  for (auto *PI : InheritedProtocols) {
    if (ProtocolCompatibleWithProtocol(Proto, PI)) {
      Conforms = true;
      break;
    }
  }
  if (!Conforms)
    break;
}
if (Conforms)
  return true;

for (auto *PI : InheritedProtocols) {
  // If both the right and left sides have qualifiers.
  bool Adopts = false;
  for (auto *Proto : OPT->quals()) {
    // return 'true' if 'PI' is in the inheritance hierarchy of Proto
    if ((Adopts = ProtocolCompatibleWithProtocol(PI, Proto)))
      break;
  }
  if (!Adopts)
    return false;
}
return true;
5607}

5609/// getObjCObjectPointerType - Return a ObjCObjectPointerType type for
5610/// the given object type.
5611QualType ASTContext::getObjCObjectPointerType(QualType ObjectT) const {
llvm::FoldingSetNodeID ID;
ObjCObjectPointerType::Profile(ID, ObjectT);

void *InsertPos = nullptr;
if (ObjCObjectPointerType *QT =
            ObjCObjectPointerTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(QT, 0);

// Find the canonical object type.
QualType Canonical;
if (!ObjectT.isCanonical()) {
  Canonical = getObjCObjectPointerType(getCanonicalType(ObjectT));

  // Regenerate InsertPos.
  ObjCObjectPointerTypes.FindNodeOrInsertPos(ID, InsertPos);
}

// No match.
void *Mem = Allocate(sizeof(ObjCObjectPointerType), TypeAlignment);
auto *QType =
  new (Mem) ObjCObjectPointerType(Canonical, ObjectT);

Types.push_back(QType);
ObjCObjectPointerTypes.InsertNode(QType, InsertPos);
return QualType(QType, 0);
5637}

5639/// getObjCInterfaceType - Return the unique reference to the type for the
5640/// specified ObjC interface decl. The list of protocols is optional.
5641QualType ASTContext::getObjCInterfaceType(const ObjCInterfaceDecl *Decl,
                                        ObjCInterfaceDecl *PrevDecl) const {
if (Decl->TypeForDecl)
  return QualType(Decl->TypeForDecl, 0);

if (PrevDecl) {
  assert(PrevDecl->TypeForDecl && "previous decl has no TypeForDecl")(static_cast <bool> (PrevDecl->TypeForDecl &&
 "previous decl has no TypeForDecl") ? void (0) : __assert_fail
 ("PrevDecl->TypeForDecl && \"previous decl has no TypeForDecl\""
, "clang/lib/AST/ASTContext.cpp", 5647, __extension__ __PRETTY_FUNCTION__
));
  Decl->TypeForDecl = PrevDecl->TypeForDecl;
  return QualType(PrevDecl->TypeForDecl, 0);
}

// Prefer the definition, if there is one.
if (const ObjCInterfaceDecl *Def = Decl->getDefinition())
  Decl = Def;

void *Mem = Allocate(sizeof(ObjCInterfaceType), TypeAlignment);
auto *T = new (Mem) ObjCInterfaceType(Decl);
Decl->TypeForDecl = T;
Types.push_back(T);
return QualType(T, 0);
5661}

5663/// getTypeOfExprType - Unlike many "get<Type>" functions, we can't unique
5664/// TypeOfExprType AST's (since expression's are never shared). For example,
5665/// multiple declarations that refer to "typeof(x)" all contain different
5666/// DeclRefExpr's. This doesn't effect the type checker, since it operates
5667/// on canonical type's (which are always unique).
5668QualType ASTContext::getTypeOfExprType(Expr *tofExpr, TypeOfKind Kind) const {
TypeOfExprType *toe;
if (tofExpr->isTypeDependent()) {
  llvm::FoldingSetNodeID ID;
  DependentTypeOfExprType::Profile(ID, *this, tofExpr,
                                   Kind == TypeOfKind::Unqualified);

  void *InsertPos = nullptr;
  DependentTypeOfExprType *Canon =
      DependentTypeOfExprTypes.FindNodeOrInsertPos(ID, InsertPos);
  if (Canon) {
    // We already have a "canonical" version of an identical, dependent
    // typeof(expr) type. Use that as our canonical type.
    toe = new (*this, TypeAlignment)
        TypeOfExprType(tofExpr, Kind, QualType((TypeOfExprType *)Canon, 0));
  } else {
    // Build a new, canonical typeof(expr) type.
    Canon = new (*this, TypeAlignment)
        DependentTypeOfExprType(*this, tofExpr, Kind);
    DependentTypeOfExprTypes.InsertNode(Canon, InsertPos);
    toe = Canon;
  }
} else {
  QualType Canonical = getCanonicalType(tofExpr->getType());
  toe = new (*this, TypeAlignment) TypeOfExprType(tofExpr, Kind, Canonical);
}
Types.push_back(toe);
return QualType(toe, 0);
5696}

5698/// getTypeOfType -  Unlike many "get<Type>" functions, we don't unique
5699/// TypeOfType nodes. The only motivation to unique these nodes would be
5700/// memory savings. Since typeof(t) is fairly uncommon, space shouldn't be
5701/// an issue. This doesn't affect the type checker, since it operates
5702/// on canonical types (which are always unique).
5703QualType ASTContext::getTypeOfType(QualType tofType, TypeOfKind Kind) const {
QualType Canonical = getCanonicalType(tofType);
auto *tot =
    new (*this, TypeAlignment) TypeOfType(tofType, Canonical, Kind);
Types.push_back(tot);
return QualType(tot, 0);
5709}

5711/// getReferenceQualifiedType - Given an expr, will return the type for
5712/// that expression, as in [dcl.type.simple]p4 but without taking id-expressions
5713/// and class member access into account.
5714QualType ASTContext::getReferenceQualifiedType(const Expr *E) const {
// C++11 [dcl.type.simple]p4:
//   [...]
QualType T = E->getType();
switch (E->getValueKind()) {
//     - otherwise, if e is an xvalue, decltype(e) is T&&, where T is the
//       type of e;
case VK_XValue:
  return getRValueReferenceType(T);
//     - otherwise, if e is an lvalue, decltype(e) is T&, where T is the
//       type of e;
case VK_LValue:
  return getLValueReferenceType(T);
//  - otherwise, decltype(e) is the type of e.
case VK_PRValue:
  return T;
}
llvm_unreachable("Unknown value kind")::llvm::llvm_unreachable_internal("Unknown value kind", "clang/lib/AST/ASTContext.cpp"
, 5731);
5732}

5734/// Unlike many "get<Type>" functions, we don't unique DecltypeType
5735/// nodes. This would never be helpful, since each such type has its own
5736/// expression, and would not give a significant memory saving, since there
5737/// is an Expr tree under each such type.
5738QualType ASTContext::getDecltypeType(Expr *e, QualType UnderlyingType) const {
DecltypeType *dt;

// C++11 [temp.type]p2:
//   If an expression e involves a template parameter, decltype(e) denotes a
//   unique dependent type. Two such decltype-specifiers refer to the same
//   type only if their expressions are equivalent (14.5.6.1).
if (e->isInstantiationDependent()) {
  llvm::FoldingSetNodeID ID;
  DependentDecltypeType::Profile(ID, *this, e);

  void *InsertPos = nullptr;
  DependentDecltypeType *Canon
    = DependentDecltypeTypes.FindNodeOrInsertPos(ID, InsertPos);
  if (!Canon) {
    // Build a new, canonical decltype(expr) type.
    Canon = new (*this, TypeAlignment) DependentDecltypeType(*this, e);
    DependentDecltypeTypes.InsertNode(Canon, InsertPos);
  }
  dt = new (*this, TypeAlignment)
      DecltypeType(e, UnderlyingType, QualType((DecltypeType *)Canon, 0));
} else {
  dt = new (*this, TypeAlignment)
      DecltypeType(e, UnderlyingType, getCanonicalType(UnderlyingType));
}
Types.push_back(dt);
return QualType(dt, 0);
5765}

5767/// getUnaryTransformationType - We don't unique these, since the memory
5768/// savings are minimal and these are rare.
5769QualType ASTContext::getUnaryTransformType(QualType BaseType,
                                         QualType UnderlyingType,
                                         UnaryTransformType::UTTKind Kind)
  const {
UnaryTransformType *ut = nullptr;

if (BaseType->isDependentType()) {
  // Look in the folding set for an existing type.
  llvm::FoldingSetNodeID ID;
  DependentUnaryTransformType::Profile(ID, getCanonicalType(BaseType), Kind);

  void *InsertPos = nullptr;
  DependentUnaryTransformType *Canon
    = DependentUnaryTransformTypes.FindNodeOrInsertPos(ID, InsertPos);

  if (!Canon) {
    // Build a new, canonical __underlying_type(type) type.
    Canon = new (*this, TypeAlignment)
           DependentUnaryTransformType(*this, getCanonicalType(BaseType),
                                       Kind);
    DependentUnaryTransformTypes.InsertNode(Canon, InsertPos);
  }
  ut = new (*this, TypeAlignment) UnaryTransformType (BaseType,
                                                      QualType(), Kind,
                                                      QualType(Canon, 0));
} else {
  QualType CanonType = getCanonicalType(UnderlyingType);
  ut = new (*this, TypeAlignment) UnaryTransformType (BaseType,
                                                      UnderlyingType, Kind,
                                                      CanonType);
}
Types.push_back(ut);
return QualType(ut, 0);
5802}

5804QualType ASTContext::getAutoTypeInternal(
  QualType DeducedType, AutoTypeKeyword Keyword, bool IsDependent,
  bool IsPack, ConceptDecl *TypeConstraintConcept,
  ArrayRef<TemplateArgument> TypeConstraintArgs, bool IsCanon) const {
if (DeducedType.isNull() && Keyword == AutoTypeKeyword::Auto &&
    !TypeConstraintConcept && !IsDependent)
  return getAutoDeductType();

// Look in the folding set for an existing type.
void *InsertPos = nullptr;
llvm::FoldingSetNodeID ID;
AutoType::Profile(ID, *this, DeducedType, Keyword, IsDependent,
                  TypeConstraintConcept, TypeConstraintArgs);
if (AutoType *AT = AutoTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(AT, 0);

QualType Canon;
if (!IsCanon) {
  if (!DeducedType.isNull()) {
    Canon = DeducedType.getCanonicalType();
  } else if (TypeConstraintConcept) {
    bool AnyNonCanonArgs = false;
    ConceptDecl *CanonicalConcept = TypeConstraintConcept->getCanonicalDecl();
    auto CanonicalConceptArgs = ::getCanonicalTemplateArguments(
        *this, TypeConstraintArgs, AnyNonCanonArgs);
    if (CanonicalConcept != TypeConstraintConcept || AnyNonCanonArgs) {
      Canon =
          getAutoTypeInternal(QualType(), Keyword, IsDependent, IsPack,
                              CanonicalConcept, CanonicalConceptArgs, true);
      // Find the insert position again.
      [[maybe_unused]] auto *Nothing =
          AutoTypes.FindNodeOrInsertPos(ID, InsertPos);
      assert(!Nothing && "canonical type broken")(static_cast <bool> (!Nothing && "canonical type broken"
) ? void (0) : __assert_fail ("!Nothing && \"canonical type broken\""
, "clang/lib/AST/ASTContext.cpp", 5836, __extension__ __PRETTY_FUNCTION__
));
    }
  }
}

void *Mem = Allocate(sizeof(AutoType) +
                         sizeof(TemplateArgument) * TypeConstraintArgs.size(),
                     TypeAlignment);
auto *AT = new (Mem) AutoType(
    DeducedType, Keyword,
    (IsDependent ? TypeDependence::DependentInstantiation
                 : TypeDependence::None) |
        (IsPack ? TypeDependence::UnexpandedPack : TypeDependence::None),
    Canon, TypeConstraintConcept, TypeConstraintArgs);
Types.push_back(AT);
AutoTypes.InsertNode(AT, InsertPos);
return QualType(AT, 0);
5853}

5855/// getAutoType - Return the uniqued reference to the 'auto' type which has been
5856/// deduced to the given type, or to the canonical undeduced 'auto' type, or the
5857/// canonical deduced-but-dependent 'auto' type.
5858QualType
5859ASTContext::getAutoType(QualType DeducedType, AutoTypeKeyword Keyword,
                      bool IsDependent, bool IsPack,
                      ConceptDecl *TypeConstraintConcept,
                      ArrayRef<TemplateArgument> TypeConstraintArgs) const {
assert((!IsPack || IsDependent) && "only use IsPack for a dependent pack")(static_cast <bool> ((!IsPack || IsDependent) &&
 "only use IsPack for a dependent pack") ? void (0) : __assert_fail
 ("(!IsPack || IsDependent) && \"only use IsPack for a dependent pack\""
, "clang/lib/AST/ASTContext.cpp", 5863, __extension__ __PRETTY_FUNCTION__
));
assert((!IsDependent || DeducedType.isNull()) &&(static_cast <bool> ((!IsDependent || DeducedType.isNull
()) && "A dependent auto should be undeduced") ? void
 (0) : __assert_fail ("(!IsDependent || DeducedType.isNull()) && \"A dependent auto should be undeduced\""
, "clang/lib/AST/ASTContext.cpp", 5865, __extension__ __PRETTY_FUNCTION__
))
       "A dependent auto should be undeduced")(static_cast <bool> ((!IsDependent || DeducedType.isNull
()) && "A dependent auto should be undeduced") ? void
 (0) : __assert_fail ("(!IsDependent || DeducedType.isNull()) && \"A dependent auto should be undeduced\""
, "clang/lib/AST/ASTContext.cpp", 5865, __extension__ __PRETTY_FUNCTION__
));
return getAutoTypeInternal(DeducedType, Keyword, IsDependent, IsPack,
                           TypeConstraintConcept, TypeConstraintArgs);
5868}

5870QualType ASTContext::getUnconstrainedType(QualType T) const {
QualType CanonT = T.getCanonicalType();

// Remove a type-constraint from a top-level auto or decltype(auto).
if (auto *AT = CanonT->getAs<AutoType>()) {
  if (!AT->isConstrained())
    return T;
  return getQualifiedType(getAutoType(QualType(), AT->getKeyword(), false,
                                      AT->containsUnexpandedParameterPack()),
                          T.getQualifiers());
}

// FIXME: We only support constrained auto at the top level in the type of a
// non-type template parameter at the moment. Once we lift that restriction,
// we'll need to recursively build types containing auto here.
assert(!CanonT->getContainedAutoType() ||(static_cast <bool> (!CanonT->getContainedAutoType()
 || !CanonT->getContainedAutoType()->isConstrained()) ?
 void (0) : __assert_fail ("!CanonT->getContainedAutoType() || !CanonT->getContainedAutoType()->isConstrained()"
, "clang/lib/AST/ASTContext.cpp", 5886, __extension__ __PRETTY_FUNCTION__
))
       !CanonT->getContainedAutoType()->isConstrained())(static_cast <bool> (!CanonT->getContainedAutoType()
 || !CanonT->getContainedAutoType()->isConstrained()) ?
 void (0) : __assert_fail ("!CanonT->getContainedAutoType() || !CanonT->getContainedAutoType()->isConstrained()"
, "clang/lib/AST/ASTContext.cpp", 5886, __extension__ __PRETTY_FUNCTION__
));
return T;
5888}

5890/// Return the uniqued reference to the deduced template specialization type
5891/// which has been deduced to the given type, or to the canonical undeduced
5892/// such type, or the canonical deduced-but-dependent such type.
5893QualType ASTContext::getDeducedTemplateSpecializationType(
  TemplateName Template, QualType DeducedType, bool IsDependent) const {
// Look in the folding set for an existing type.
void *InsertPos = nullptr;
llvm::FoldingSetNodeID ID;
DeducedTemplateSpecializationType::Profile(ID, Template, DeducedType,
                                           IsDependent);
if (DeducedTemplateSpecializationType *DTST =
        DeducedTemplateSpecializationTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(DTST, 0);

auto *DTST = new (*this, TypeAlignment)
    DeducedTemplateSpecializationType(Template, DeducedType, IsDependent);
llvm::FoldingSetNodeID TempID;
DTST->Profile(TempID);
assert(ID == TempID && "ID does not match")(static_cast <bool> (ID == TempID && "ID does not match"
) ? void (0) : __assert_fail ("ID == TempID && \"ID does not match\""
, "clang/lib/AST/ASTContext.cpp", 5908, __extension__ __PRETTY_FUNCTION__
));
Types.push_back(DTST);
DeducedTemplateSpecializationTypes.InsertNode(DTST, InsertPos);
return QualType(DTST, 0);
5912}

5914/// getAtomicType - Return the uniqued reference to the atomic type for
5915/// the given value type.
5916QualType ASTContext::getAtomicType(QualType T) const {
// Unique pointers, to guarantee there is only one pointer of a particular
// structure.
llvm::FoldingSetNodeID ID;
AtomicType::Profile(ID, T);

void *InsertPos = nullptr;
if (AtomicType *AT = AtomicTypes.FindNodeOrInsertPos(ID, InsertPos))
  return QualType(AT, 0);

// If the atomic value type isn't canonical, this won't be a canonical type
// either, so fill in the canonical type field.
QualType Canonical;
if (!T.isCanonical()) {
  Canonical = getAtomicType(getCanonicalType(T));

  // Get the new insert position for the node we care about.
  AtomicType *NewIP = AtomicTypes.FindNodeOrInsertPos(ID, InsertPos);
  assert(!NewIP && "Shouldn't be in the map!")(static_cast <bool> (!NewIP && "Shouldn't be in the map!"
) ? void (0) : __assert_fail ("!NewIP && \"Shouldn't be in the map!\""
, "clang/lib/AST/ASTContext.cpp", 5934, __extension__ __PRETTY_FUNCTION__
)); (void)NewIP;
}
auto *New = new (*this, TypeAlignment) AtomicType(T, Canonical);
Types.push_back(New);
AtomicTypes.InsertNode(New, InsertPos);
return QualType(New, 0);
5940}

5942/// getAutoDeductType - Get type pattern for deducing against 'auto'.
5943QualType ASTContext::getAutoDeductType() const {
if (AutoDeductTy.isNull())
  AutoDeductTy = QualType(new (*this, TypeAlignment)
                              AutoType(QualType(), AutoTypeKeyword::Auto,
                                       TypeDependence::None, QualType(),
                                       /*concept*/ nullptr, /*args*/ {}),
                          0);
return AutoDeductTy;
5951}

5953/// getAutoRRefDeductType - Get type pattern for deducing against 'auto &&'.
5954QualType ASTContext::getAutoRRefDeductType() const {
if (AutoRRefDeductTy.isNull())
  AutoRRefDeductTy = getRValueReferenceType(getAutoDeductType());
assert(!AutoRRefDeductTy.isNull() && "can't build 'auto &&' pattern")(static_cast <bool> (!AutoRRefDeductTy.isNull() &&
 "can't build 'auto &&' pattern") ? void (0) : __assert_fail
 ("!AutoRRefDeductTy.isNull() && \"can't build 'auto &&' pattern\""
, "clang/lib/AST/ASTContext.cpp", 5957, __extension__ __PRETTY_FUNCTION__
));
return AutoRRefDeductTy;
5959}

5961/// getTagDeclType - Return the unique reference to the type for the
5962/// specified TagDecl (struct/union/class/enum) decl.
5963QualType ASTContext::getTagDeclType(const TagDecl *Decl) const {
assert(Decl)(static_cast <bool> (Decl) ? void (0) : __assert_fail (
"Decl", "clang/lib/AST/ASTContext.cpp", 5964, __extension__ __PRETTY_FUNCTION__
));
// FIXME: What is the design on getTagDeclType when it requires casting
// away const?  mutable?
return getTypeDeclType(const_cast<TagDecl*>(Decl));
5968}

5970/// getSizeType - Return the unique type for "size_t" (C99 7.17), the result
5971/// of the sizeof operator (C99 6.5.3.4p4). The value is target dependent and
5972/// needs to agree with the definition in <stddef.h>.
5973CanQualType ASTContext::getSizeType() const {
return getFromTargetType(Target->getSizeType());
5975}

5977/// Return the unique signed counterpart of the integer type
5978/// corresponding to size_t.
5979CanQualType ASTContext::getSignedSizeType() const {
return getFromTargetType(Target->getSignedSizeType());
5981}

5983/// getIntMaxType - Return the unique type for "intmax_t" (C99 7.18.1.5).
5984CanQualType ASTContext::getIntMaxType() const {
return getFromTargetType(Target->getIntMaxType());
5986}

5988/// getUIntMaxType - Return the unique type for "uintmax_t" (C99 7.18.1.5).
5989CanQualType ASTContext::getUIntMaxType() const {
return getFromTargetType(Target->getUIntMaxType());
5991}

5993/// getSignedWCharType - Return the type of "signed wchar_t".
5994/// Used when in C++, as a GCC extension.
5995QualType ASTContext::getSignedWCharType() const {
// FIXME: derive from "Target" ?
return WCharTy;
5998}

6000/// getUnsignedWCharType - Return the type of "unsigned wchar_t".
6001/// Used when in C++, as a GCC extension.
6002QualType ASTContext::getUnsignedWCharType() const {
// FIXME: derive from "Target" ?
return UnsignedIntTy;
6005}

6007QualType ASTContext::getIntPtrType() const {
return getFromTargetType(Target->getIntPtrType());
6009}

6011QualType ASTContext::getUIntPtrType() const {
return getCorrespondingUnsignedType(getIntPtrType());
6013}

6015/// getPointerDiffType - Return the unique type for "ptrdiff_t" (C99 7.17)
6016/// defined in <stddef.h>. Pointer - pointer requires this (C99 6.5.6p9).
6017QualType ASTContext::getPointerDiffType() const {
return getFromTargetType(Target->getPtrDiffType(LangAS::Default));
6019}

6021/// Return the unique unsigned counterpart of "ptrdiff_t"
6022/// integer type. The standard (C11 7.21.6.1p7) refers to this type
6023/// in the definition of %tu format specifier.
6024QualType ASTContext::getUnsignedPointerDiffType() const {
return getFromTargetType(Target->getUnsignedPtrDiffType(LangAS::Default));
6026}

6028/// Return the unique type for "pid_t" defined in
6029/// <sys/types.h>. We need this to compute the correct type for vfork().
6030QualType ASTContext::getProcessIDType() const {
return getFromTargetType(Target->getProcessIDType());
6032}

6034//===----------------------------------------------------------------------===//
6035//                              Type Operators
6036//===----------------------------------------------------------------------===//

6038CanQualType ASTContext::getCanonicalParamType(QualType T) const {
// Push qualifiers into arrays, and then discard any remaining
// qualifiers.
T = getCanonicalType(T);
T = getVariableArrayDecayedType(T);
const Type *Ty = T.getTypePtr();
QualType Result;
if (isa<ArrayType>(Ty)) {
  Result = getArrayDecayedType(QualType(Ty,0));
} else if (isa<FunctionType>(Ty)) {
  Result = getPointerType(QualType(Ty, 0));
} else {
  Result = QualType(Ty, 0);
}

return CanQualType::CreateUnsafe(Result);
6054}

6056QualType ASTContext::getUnqualifiedArrayType(QualType type,
                                           Qualifiers &quals) {
SplitQualType splitType = type.getSplitUnqualifiedType();

// FIXME: getSplitUnqualifiedType() actually walks all the way to
// the unqualified desugared type and then drops it on the floor.
// We then have to strip that sugar back off with
// getUnqualifiedDesugaredType(), which is silly.
const auto *AT =
    dyn_cast<ArrayType>(splitType.Ty->getUnqualifiedDesugaredType());

// If we don't have an array, just use the results in splitType.
if (!AT) {
  quals = splitType.Quals;
  return QualType(splitType.Ty, 0);
}

// Otherwise, recurse on the array's element type.
QualType elementType = AT->getElementType();
QualType unqualElementType = getUnqualifiedArrayType(elementType, quals);

// If that didn't change the element type, AT has no qualifiers, so we
// can just use the results in splitType.
if (elementType == unqualElementType) {
  assert(quals.empty())(static_cast <bool> (quals.empty()) ? void (0) : __assert_fail
 ("quals.empty()", "clang/lib/AST/ASTContext.cpp", 6080, __extension__
 __PRETTY_FUNCTION__)); // from the recursive call
  quals = splitType.Quals;
  return QualType(splitType.Ty, 0);
}

// Otherwise, add in the qualifiers from the outermost type, then
// build the type back up.
quals.addConsistentQualifiers(splitType.Quals);

if (const auto *CAT = dyn_cast<ConstantArrayType>(AT)) {
  return getConstantArrayType(unqualElementType, CAT->getSize(),
                              CAT->getSizeExpr(), CAT->getSizeModifier(), 0);
}

if (const auto *IAT = dyn_cast<IncompleteArrayType>(AT)) {
  return getIncompleteArrayType(unqualElementType, IAT->getSizeModifier(), 0);
}

if (const auto *VAT = dyn_cast<VariableArrayType>(AT)) {
  return getVariableArrayType(unqualElementType,
                              VAT->getSizeExpr(),
                              VAT->getSizeModifier(),
                              VAT->getIndexTypeCVRQualifiers(),
                              VAT->getBracketsRange());
}

const auto *DSAT = cast<DependentSizedArrayType>(AT);
return getDependentSizedArrayType(unqualElementType, DSAT->getSizeExpr(),
                                  DSAT->getSizeModifier(), 0,
                                  SourceRange());
6110}

6112/// Attempt to unwrap two types that may both be array types with the same bound
6113/// (or both be array types of unknown bound) for the purpose of comparing the
6114/// cv-decomposition of two types per C++ [conv.qual].
6115///
6116/// \param AllowPiMismatch Allow the Pi1 and Pi2 to differ as described in
6117///        C++20 [conv.qual], if permitted by the current language mode.
6118void ASTContext::UnwrapSimilarArrayTypes(QualType &T1, QualType &T2,
                                       bool AllowPiMismatch) {
while (true) {
  auto *AT1 = getAsArrayType(T1);
  if (!AT1)
    return;

  auto *AT2 = getAsArrayType(T2);
  if (!AT2)
    return;

  // If we don't have two array types with the same constant bound nor two
  // incomplete array types, we've unwrapped everything we can.
  // C++20 also permits one type to be a constant array type and the other
  // to be an incomplete array type.
  // FIXME: Consider also unwrapping array of unknown bound and VLA.
  if (auto *CAT1 = dyn_cast<ConstantArrayType>(AT1)) {
    auto *CAT2 = dyn_cast<ConstantArrayType>(AT2);
    if (!((CAT2 && CAT1->getSize() == CAT2->getSize()) ||
          (AllowPiMismatch && getLangOpts().CPlusPlus20 &&
           isa<IncompleteArrayType>(AT2))))
      return;
  } else if (isa<IncompleteArrayType>(AT1)) {
    if (!(isa<IncompleteArrayType>(AT2) ||
          (AllowPiMismatch && getLangOpts().CPlusPlus20 &&
           isa<ConstantArrayType>(AT2))))
      return;
  } else {
    return;
  }

  T1 = AT1->getElementType();
  T2 = AT2->getElementType();
}
6152}

6154/// Attempt to unwrap two types that may be similar (C++ [conv.qual]).
6155///
6156/// If T1 and T2 are both pointer types of the same kind, or both array types
6157/// with the same bound, unwraps layers from T1 and T2 until a pointer type is
6158/// unwrapped. Top-level qualifiers on T1 and T2 are ignored.
6159///
6160/// This function will typically be called in a loop that successively
6161/// "unwraps" pointer and pointer-to-member types to compare them at each
6162/// level.
6163///
6164/// \param AllowPiMismatch Allow the Pi1 and Pi2 to differ as described in
6165///        C++20 [conv.qual], if permitted by the current language mode.
6166///
6167/// \return \c true if a pointer type was unwrapped, \c false if we reached a
6168/// pair of types that can't be unwrapped further.
6169bool ASTContext::UnwrapSimilarTypes(QualType &T1, QualType &T2,
                                  bool AllowPiMismatch) {
UnwrapSimilarArrayTypes(T1, T2, AllowPiMismatch);

const auto *T1PtrType = T1->getAs<PointerType>();
const auto *T2PtrType = T2->getAs<PointerType>();
if (T1PtrType && T2PtrType) {
  T1 = T1PtrType->getPointeeType();
  T2 = T2PtrType->getPointeeType();
  return true;
}

const auto *T1MPType = T1->getAs<MemberPointerType>();
const auto *T2MPType = T2->getAs<MemberPointerType>();
if (T1MPType && T2MPType &&
    hasSameUnqualifiedType(QualType(T1MPType->getClass(), 0),
                           QualType(T2MPType->getClass(), 0))) {
  T1 = T1MPType->getPointeeType();
  T2 = T2MPType->getPointeeType();
  return true;
}

if (getLangOpts().ObjC) {
  const auto *T1OPType = T1->getAs<ObjCObjectPointerType>();
  const auto *T2OPType = T2->getAs<ObjCObjectPointerType>();
  if (T1OPType && T2OPType) {
    T1 = T1OPType->getPointeeType();
    T2 = T2OPType->getPointeeType();
    return true;
  }
}

// FIXME: Block pointers, too?

return false;
6204}

6206bool ASTContext::hasSimilarType(QualType T1, QualType T2) {
while (true) {
  Qualifiers Quals;
  T1 = getUnqualifiedArrayType(T1, Quals);
  T2 = getUnqualifiedArrayType(T2, Quals);
  if (hasSameType(T1, T2))
    return true;
  if (!UnwrapSimilarTypes(T1, T2))
    return false;
}
6216}

6218bool ASTContext::hasCvrSimilarType(QualType T1, QualType T2) {
while (true) {
  Qualifiers Quals1, Quals2;
  T1 = getUnqualifiedArrayType(T1, Quals1);
  T2 = getUnqualifiedArrayType(T2, Quals2);

  Quals1.removeCVRQualifiers();
  Quals2.removeCVRQualifiers();
  if (Quals1 != Quals2)
    return false;

  if (hasSameType(T1, T2))
    return true;

  if (!UnwrapSimilarTypes(T1, T2, /*AllowPiMismatch*/ false))
    return false;
}
6235}

6237DeclarationNameInfo
6238ASTContext::getNameForTemplate(TemplateName Name,
                             SourceLocation NameLoc) const {
switch (Name.getKind()) {
case TemplateName::QualifiedTemplate:
case TemplateName::Template:
  // DNInfo work in progress: CHECKME: what about DNLoc?
  return DeclarationNameInfo(Name.getAsTemplateDecl()->getDeclName(),
                             NameLoc);

case TemplateName::OverloadedTemplate: {
  OverloadedTemplateStorage *Storage = Name.getAsOverloadedTemplate();
  // DNInfo work in progress: CHECKME: what about DNLoc?
  return DeclarationNameInfo((*Storage->begin())->getDeclName(), NameLoc);
}

case TemplateName::AssumedTemplate: {
  AssumedTemplateStorage *Storage = Name.getAsAssumedTemplateName();
  return DeclarationNameInfo(Storage->getDeclName(), NameLoc);
}

case TemplateName::DependentTemplate: {
  DependentTemplateName *DTN = Name.getAsDependentTemplateName();
  DeclarationName DName;
  if (DTN->isIdentifier()) {
    DName = DeclarationNames.getIdentifier(DTN->getIdentifier());
    return DeclarationNameInfo(DName, NameLoc);
  } else {
    DName = DeclarationNames.getCXXOperatorName(DTN->getOperator());
    // DNInfo work in progress: FIXME: source locations?
    DeclarationNameLoc DNLoc =
        DeclarationNameLoc::makeCXXOperatorNameLoc(SourceRange());
    return DeclarationNameInfo(DName, NameLoc, DNLoc);
  }
}

case TemplateName::SubstTemplateTemplateParm: {
  SubstTemplateTemplateParmStorage *subst
    = Name.getAsSubstTemplateTemplateParm();
  return DeclarationNameInfo(subst->getParameter()->getDeclName(),
                             NameLoc);
}

case TemplateName::SubstTemplateTemplateParmPack: {
  SubstTemplateTemplateParmPackStorage *subst
    = Name.getAsSubstTemplateTemplateParmPack();
  return DeclarationNameInfo(subst->getParameterPack()->getDeclName(),
                             NameLoc);
}
case TemplateName::UsingTemplate:
  return DeclarationNameInfo(Name.getAsUsingShadowDecl()->getDeclName(),
                             NameLoc);
}

llvm_unreachable("bad template name kind!")::llvm::llvm_unreachable_internal("bad template name kind!", "clang/lib/AST/ASTContext.cpp"
, 6291);
6292}

6294TemplateName
6295ASTContext::getCanonicalTemplateName(const TemplateName &Name) const {
switch (Name.getKind()) {
case TemplateName::UsingTemplate:
case TemplateName::QualifiedTemplate:
case TemplateName::Template: {
  TemplateDecl *Template = Name.getAsTemplateDecl();
  if (auto *TTP  = dyn_cast<TemplateTemplateParmDecl>(Template))
    Template = getCanonicalTemplateTemplateParmDecl(TTP);

  // The canonical template name is the canonical template declaration.
  return TemplateName(cast<TemplateDecl>(Template->getCanonicalDecl()));
}

case TemplateName::OverloadedTemplate:
case TemplateName::AssumedTemplate:
  llvm_unreachable("cannot canonicalize unresolved template")::llvm::llvm_unreachable_internal("cannot canonicalize unresolved template"
, "clang/lib/AST/ASTContext.cpp", 6310);

case TemplateName::DependentTemplate: {
  DependentTemplateName *DTN = Name.getAsDependentTemplateName();
  assert(DTN && "Non-dependent template names must refer to template decls.")(static_cast <bool> (DTN && "Non-dependent template names must refer to template decls."
) ? void (0) : __assert_fail ("DTN && \"Non-dependent template names must refer to template decls.\""
, "clang/lib/AST/ASTContext.cpp", 6314, __extension__ __PRETTY_FUNCTION__
));
  return DTN->CanonicalTemplateName;
}

case TemplateName::SubstTemplateTemplateParm: {
  SubstTemplateTemplateParmStorage *subst
    = Name.getAsSubstTemplateTemplateParm();
  return getCanonicalTemplateName(subst->getReplacement());
}

case TemplateName::SubstTemplateTemplateParmPack: {
  SubstTemplateTemplateParmPackStorage *subst =
      Name.getAsSubstTemplateTemplateParmPack();
  TemplateArgument canonArgPack =
      getCanonicalTemplateArgument(subst->getArgumentPack());
  return getSubstTemplateTemplateParmPack(
      canonArgPack, subst->getAssociatedDecl()->getCanonicalDecl(),
      subst->getFinal(), subst->getIndex());
}
}

llvm_unreachable("bad template name!")::llvm::llvm_unreachable_internal("bad template name!", "clang/lib/AST/ASTContext.cpp"
, 6335);
6336}

6338bool ASTContext::hasSameTemplateName(const TemplateName &X,
                                   const TemplateName &Y) const {
return getCanonicalTemplateName(X).getAsVoidPointer() ==
       getCanonicalTemplateName(Y).getAsVoidPointer();
6342}

6344bool ASTContext::isSameConstraintExpr(const Expr *XCE, const Expr *YCE) const {
if (!XCE != !YCE)
  return false;

if (!XCE)
  return true;

llvm::FoldingSetNodeID XCEID, YCEID;
XCE->Profile(XCEID, *this, /*Canonical=*/true);
YCE->Profile(YCEID, *this, /*Canonical=*/true);
return XCEID == YCEID;
6355}

6357bool ASTContext::isSameTypeConstraint(const TypeConstraint *XTC,
                                    const TypeConstraint *YTC) const {
if (!XTC != !YTC)
  return false;

if (!XTC)
  return true;

auto *NCX = XTC->getNamedConcept();
auto *NCY = YTC->getNamedConcept();
if (!NCX || !NCY || !isSameEntity(NCX, NCY))
  return false;
if (XTC->hasExplicitTemplateArgs() != YTC->hasExplicitTemplateArgs())
  return false;
if (XTC->hasExplicitTemplateArgs())
  if (XTC->getTemplateArgsAsWritten()->NumTemplateArgs !=
      YTC->getTemplateArgsAsWritten()->NumTemplateArgs)
    return false;

// Compare slowly by profiling.
//
// We couldn't compare the profiling result for the template
// args here. Consider the following example in different modules:
//
// template <__integer_like _Tp, C<_Tp> Sentinel>
// constexpr _Tp operator()(_Tp &&__t, Sentinel &&last) const {
//   return __t;
// }
//
// When we compare the profiling result for `C<_Tp>` in different
// modules, it will compare the type of `_Tp` in different modules.
// However, the type of `_Tp` in different modules refer to different
// types here naturally. So we couldn't compare the profiling result
// for the template args directly.
return isSameConstraintExpr(XTC->getImmediatelyDeclaredConstraint(),
                            YTC->getImmediatelyDeclaredConstraint());
6393}

6395bool ASTContext::isSameTemplateParameter(const NamedDecl *X,
                                       const NamedDecl *Y) const {
if (X->getKind() != Y->getKind())
  return false;

if (auto *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
  auto *TY = cast<TemplateTypeParmDecl>(Y);
  if (TX->isParameterPack() != TY->isParameterPack())
    return false;
  if (TX->hasTypeConstraint() != TY->hasTypeConstraint())
    return false;
  return isSameTypeConstraint(TX->getTypeConstraint(),
                              TY->getTypeConstraint());
}

if (auto *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
  auto *TY = cast<NonTypeTemplateParmDecl>(Y);
  return TX->isParameterPack() == TY->isParameterPack() &&
         TX->getASTContext().hasSameType(TX->getType(), TY->getType()) &&
         isSameConstraintExpr(TX->getPlaceholderTypeConstraint(),
                              TY->getPlaceholderTypeConstraint());
}

auto *TX = cast<TemplateTemplateParmDecl>(X);
auto *TY = cast<TemplateTemplateParmDecl>(Y);
return TX->isParameterPack() == TY->isParameterPack() &&
       isSameTemplateParameterList(TX->getTemplateParameters(),
                                   TY->getTemplateParameters());
6423}

6425bool ASTContext::isSameTemplateParameterList(
  const TemplateParameterList *X, const TemplateParameterList *Y) const {
if (X->size() != Y->size())
  return false;

for (unsigned I = 0, N = X->size(); I != N; ++I)
  if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
    return false;

return isSameConstraintExpr(X->getRequiresClause(), Y->getRequiresClause());
6435}

6437bool ASTContext::isSameDefaultTemplateArgument(const NamedDecl *X,
                                             const NamedDecl *Y) const {
// If the type parameter isn't the same already, we don't need to check the
// default argument further.
if (!isSameTemplateParameter(X, Y))
  return false;

if (auto *TTPX = dyn_cast<TemplateTypeParmDecl>(X)) {
  auto *TTPY = cast<TemplateTypeParmDecl>(Y);
  if (!TTPX->hasDefaultArgument() || !TTPY->hasDefaultArgument())
    return false;

  return hasSameType(TTPX->getDefaultArgument(), TTPY->getDefaultArgument());
}

if (auto *NTTPX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
  auto *NTTPY = cast<NonTypeTemplateParmDecl>(Y);
  if (!NTTPX->hasDefaultArgument() || !NTTPY->hasDefaultArgument())
    return false;

  Expr *DefaultArgumentX = NTTPX->getDefaultArgument()->IgnoreImpCasts();
  Expr *DefaultArgumentY = NTTPY->getDefaultArgument()->IgnoreImpCasts();
  llvm::FoldingSetNodeID XID, YID;
  DefaultArgumentX->Profile(XID, *this, /*Canonical=*/true);
  DefaultArgumentY->Profile(YID, *this, /*Canonical=*/true);
  return XID == YID;
}

auto *TTPX = cast<TemplateTemplateParmDecl>(X);
auto *TTPY = cast<TemplateTemplateParmDecl>(Y);

if (!TTPX->hasDefaultArgument() || !TTPY->hasDefaultArgument())
  return false;

const TemplateArgument &TAX = TTPX->getDefaultArgument().getArgument();
const TemplateArgument &TAY = TTPY->getDefaultArgument().getArgument();
return hasSameTemplateName(TAX.getAsTemplate(), TAY.getAsTemplate());
6474}

6476static NamespaceDecl *getNamespace(const NestedNameSpecifier *X) {
if (auto *NS = X->getAsNamespace())
  return NS;
if (auto *NAS = X->getAsNamespaceAlias())
  return NAS->getNamespace();
return nullptr;
6482}

6484static bool isSameQualifier(const NestedNameSpecifier *X,
                          const NestedNameSpecifier *Y) {
if (auto *NSX = getNamespace(X)) {
  auto *NSY = getNamespace(Y);
  if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
    return false;
} else if (X->getKind() != Y->getKind())
  return false;

// FIXME: For namespaces and types, we're permitted to check that the entity
// is named via the same tokens. We should probably do so.
switch (X->getKind()) {
case NestedNameSpecifier::Identifier:
  if (X->getAsIdentifier() != Y->getAsIdentifier())
    return false;
  break;
case NestedNameSpecifier::Namespace:
case NestedNameSpecifier::NamespaceAlias:
  // We've already checked that we named the same namespace.
  break;
case NestedNameSpecifier::TypeSpec:
case NestedNameSpecifier::TypeSpecWithTemplate:
  if (X->getAsType()->getCanonicalTypeInternal() !=
      Y->getAsType()->getCanonicalTypeInternal())
    return false;
  break;
case NestedNameSpecifier::Global:
case NestedNameSpecifier::Super:
  return true;
}

// Recurse into earlier portion of NNS, if any.
auto *PX = X->getPrefix();
auto *PY = Y->getPrefix();
if (PX && PY)
  return isSameQualifier(PX, PY);
return !PX && !PY;
6521}

6523/// Determine whether the attributes we can overload on are identical for A and
6524/// B. Will ignore any overloadable attrs represented in the type of A and B.
6525static bool hasSameOverloadableAttrs(const FunctionDecl *A,
                                   const FunctionDecl *B) {
// Note that pass_object_size attributes are represented in the function's
// ExtParameterInfo, so we don't need to check them here.

llvm::FoldingSetNodeID Cand1ID, Cand2ID;
auto AEnableIfAttrs = A->specific_attrs<EnableIfAttr>();
auto BEnableIfAttrs = B->specific_attrs<EnableIfAttr>();

for (auto Pair : zip_longest(AEnableIfAttrs, BEnableIfAttrs)) {
  std::optional<EnableIfAttr *> Cand1A = std::get<0>(Pair);
  std::optional<EnableIfAttr *> Cand2A = std::get<1>(Pair);

  // Return false if the number of enable_if attributes is different.
  if (!Cand1A || !Cand2A)
    return false;

  Cand1ID.clear();
  Cand2ID.clear();

  (*Cand1A)->getCond()->Profile(Cand1ID, A->getASTContext(), true);
  (*Cand2A)->getCond()->Profile(Cand2ID, B->getASTContext(), true);

  // Return false if any of the enable_if expressions of A and B are
  // different.
  if (Cand1ID != Cand2ID)
    return false;
}
return true;
6554}

6556bool ASTContext::isSameEntity(const NamedDecl *X, const NamedDecl *Y) const {
// Caution: this function is called by the AST reader during deserialization,
// so it cannot rely on AST invariants being met. Non-trivial accessors
// should be avoided, along with any traversal of redeclaration chains.

if (X == Y)
  return true;

if (X->getDeclName() != Y->getDeclName())
  return false;

// Must be in the same context.
//
// Note that we can't use DeclContext::Equals here, because the DeclContexts
// could be two different declarations of the same function. (We will fix the
// semantic DC to refer to the primary definition after merging.)
if (!declaresSameEntity(cast<Decl>(X->getDeclContext()->getRedeclContext()),
                        cast<Decl>(Y->getDeclContext()->getRedeclContext())))
  return false;

// Two typedefs refer to the same entity if they have the same underlying
// type.
if (const auto *TypedefX = dyn_cast<TypedefNameDecl>(X))
  if (const auto *TypedefY = dyn_cast<TypedefNameDecl>(Y))
    return hasSameType(TypedefX->getUnderlyingType(),
                       TypedefY->getUnderlyingType());

// Must have the same kind.
if (X->getKind() != Y->getKind())
  return false;

// Objective-C classes and protocols with the same name always match.
if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
  return true;

if (isa<ClassTemplateSpecializationDecl>(X)) {
  // No need to handle these here: we merge them when adding them to the
  // template.
  return false;
}

// Compatible tags match.
if (const auto *TagX = dyn_cast<TagDecl>(X)) {
  const auto *TagY = cast<TagDecl>(Y);
  return (TagX->getTagKind() == TagY->getTagKind()) ||
         ((TagX->getTagKind() == TTK_Struct ||
           TagX->getTagKind() == TTK_Class ||
           TagX->getTagKind() == TTK_Interface) &&
          (TagY->getTagKind() == TTK_Struct ||
           TagY->getTagKind() == TTK_Class ||
           TagY->getTagKind() == TTK_Interface));
}

// Functions with the same type and linkage match.
// FIXME: This needs to cope with merging of prototyped/non-prototyped
// functions, etc.
if (const auto *FuncX = dyn_cast<FunctionDecl>(X)) {
  const auto *FuncY = cast<FunctionDecl>(Y);
  if (const auto *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
    const auto *CtorY = cast<CXXConstructorDecl>(Y);
    if (CtorX->getInheritedConstructor() &&
        !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
                      CtorY->getInheritedConstructor().getConstructor()))
      return false;
  }

  if (FuncX->isMultiVersion() != FuncY->isMultiVersion())
    return false;

  // Multiversioned functions with different feature strings are represented
  // as separate declarations.
  if (FuncX->isMultiVersion()) {
    const auto *TAX = FuncX->getAttr<TargetAttr>();
    const auto *TAY = FuncY->getAttr<TargetAttr>();
    assert(TAX && TAY && "Multiversion Function without target attribute")(static_cast <bool> (TAX && TAY && "Multiversion Function without target attribute"
) ? void (0) : __assert_fail ("TAX && TAY && \"Multiversion Function without target attribute\""
, "clang/lib/AST/ASTContext.cpp", 6630, __extension__ __PRETTY_FUNCTION__
));

    if (TAX->getFeaturesStr() != TAY->getFeaturesStr())
      return false;
  }

  // Per C++20 [temp.over.link]/4, friends in different classes are sometimes
  // not the same entity if they are constrained.
  if ((FuncX->isMemberLikeConstrainedFriend() ||
       FuncY->isMemberLikeConstrainedFriend()) &&
      !FuncX->getLexicalDeclContext()->Equals(
          FuncY->getLexicalDeclContext())) {
    return false;
  }

  if (!isSameConstraintExpr(FuncX->getTrailingRequiresClause(),
                            FuncY->getTrailingRequiresClause()))
    return false;

  auto GetTypeAsWritten = [](const FunctionDecl *FD) {
    // Map to the first declaration that we've already merged into this one.
    // The TSI of redeclarations might not match (due to calling conventions
    // being inherited onto the type but not the TSI), but the TSI type of
    // the first declaration of the function should match across modules.
    FD = FD->getCanonicalDecl();
    return FD->getTypeSourceInfo() ? FD->getTypeSourceInfo()->getType()
                                   : FD->getType();
  };
  QualType XT = GetTypeAsWritten(FuncX), YT = GetTypeAsWritten(FuncY);
  if (!hasSameType(XT, YT)) {
    // We can get functions with different types on the redecl chain in C++17
    // if they have differing exception specifications and at least one of
    // the excpetion specs is unresolved.
    auto *XFPT = XT->getAs<FunctionProtoType>();
    auto *YFPT = YT->getAs<FunctionProtoType>();
    if (getLangOpts().CPlusPlus17 && XFPT && YFPT &&
        (isUnresolvedExceptionSpec(XFPT->getExceptionSpecType()) ||
         isUnresolvedExceptionSpec(YFPT->getExceptionSpecType())) &&
        hasSameFunctionTypeIgnoringExceptionSpec(XT, YT))
      return true;
    return false;
  }

  return FuncX->getLinkageInternal() == FuncY->getLinkageInternal() &&
         hasSameOverloadableAttrs(FuncX, FuncY);
}

// Variables with the same type and linkage match.
if (const auto *VarX = dyn_cast<VarDecl>(X)) {
  const auto *VarY = cast<VarDecl>(Y);
  if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
    // During deserialization, we might compare variables before we load
    // their types. Assume the types will end up being the same.
    if (VarX->getType().isNull() || VarY->getType().isNull())
      return true;

    if (hasSameType(VarX->getType(), VarY->getType()))
      return true;

    // We can get decls with different types on the redecl chain. Eg.
    // template <typename T> struct S { static T Var[]; }; // #1
    // template <typename T> T S<T>::Var[sizeof(T)]; // #2
    // Only? happens when completing an incomplete array type. In this case
    // when comparing #1 and #2 we should go through their element type.
    const ArrayType *VarXTy = getAsArrayType(VarX->getType());
    const ArrayType *VarYTy = getAsArrayType(VarY->getType());
    if (!VarXTy || !VarYTy)
      return false;
    if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
      return hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
  }
  return false;
}

// Namespaces with the same name and inlinedness match.
if (const auto *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
  const auto *NamespaceY = cast<NamespaceDecl>(Y);
  return NamespaceX->isInline() == NamespaceY->isInline();
}

// Identical template names and kinds match if their template parameter lists
// and patterns match.
if (const auto *TemplateX = dyn_cast<TemplateDecl>(X)) {
  const auto *TemplateY = cast<TemplateDecl>(Y);

  // ConceptDecl wouldn't be the same if their constraint expression differs.
  if (const auto *ConceptX = dyn_cast<ConceptDecl>(X)) {
    const auto *ConceptY = cast<ConceptDecl>(Y);
    const Expr *XCE = ConceptX->getConstraintExpr();
    const Expr *YCE = ConceptY->getConstraintExpr();
    assert(XCE && YCE && "ConceptDecl without constraint expression?")(static_cast <bool> (XCE && YCE && "ConceptDecl without constraint expression?"
) ? void (0) : __assert_fail ("XCE && YCE && \"ConceptDecl without constraint expression?\""
, "clang/lib/AST/ASTContext.cpp", 6720, __extension__ __PRETTY_FUNCTION__
));
    llvm::FoldingSetNodeID XID, YID;
    XCE->Profile(XID, *this, /*Canonical=*/true);
    YCE->Profile(YID, *this, /*Canonical=*/true);
    if (XID != YID)
      return false;
  }

  return isSameEntity(TemplateX->getTemplatedDecl(),
                      TemplateY->getTemplatedDecl()) &&
         isSameTemplateParameterList(TemplateX->getTemplateParameters(),
                                     TemplateY->getTemplateParameters());
}

// Fields with the same name and the same type match.
if (const auto *FDX = dyn_cast<FieldDecl>(X)) {
  const auto *FDY = cast<FieldDecl>(Y);
  // FIXME: Also check the bitwidth is odr-equivalent, if any.
  return hasSameType(FDX->getType(), FDY->getType());
}

// Indirect fields with the same target field match.
if (const auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
  const auto *IFDY = cast<IndirectFieldDecl>(Y);
  return IFDX->getAnonField()->getCanonicalDecl() ==
         IFDY->getAnonField()->getCanonicalDecl();
}

// Enumerators with the same name match.
if (isa<EnumConstantDecl>(X))
  // FIXME: Also check the value is odr-equivalent.
  return true;

// Using shadow declarations with the same target match.
if (const auto *USX = dyn_cast<UsingShadowDecl>(X)) {
  const auto *USY = cast<UsingShadowDecl>(Y);
  return USX->getTargetDecl() == USY->getTargetDecl();
}

// Using declarations with the same qualifier match. (We already know that
// the name matches.)
if (const auto *UX = dyn_cast<UsingDecl>(X)) {
  const auto *UY = cast<UsingDecl>(Y);
  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
         UX->hasTypename() == UY->hasTypename() &&
         UX->isAccessDeclaration() == UY->isAccessDeclaration();
}
if (const auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
  const auto *UY = cast<UnresolvedUsingValueDecl>(Y);
  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
         UX->isAccessDeclaration() == UY->isAccessDeclaration();
}
if (const auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X)) {
  return isSameQualifier(
      UX->getQualifier(),
      cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
}

// Using-pack declarations are only created by instantiation, and match if
// they're instantiated from matching UnresolvedUsing...Decls.
if (const auto *UX = dyn_cast<UsingPackDecl>(X)) {
  return declaresSameEntity(
      UX->getInstantiatedFromUsingDecl(),
      cast<UsingPackDecl>(Y)->getInstantiatedFromUsingDecl());
}

// Namespace alias definitions with the same target match.
if (const auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
  const auto *NAY = cast<NamespaceAliasDecl>(Y);
  return NAX->getNamespace()->Equals(NAY->getNamespace());
}

return false;
6793}

6795TemplateArgument
6796ASTContext::getCanonicalTemplateArgument(const TemplateArgument &Arg) const {
switch (Arg.getKind()) {
  case TemplateArgument::Null:
    return Arg;

  case TemplateArgument::Expression:
    return Arg;

  case TemplateArgument::Declaration: {
    auto *D = cast<ValueDecl>(Arg.getAsDecl()->getCanonicalDecl());
    return TemplateArgument(D, getCanonicalType(Arg.getParamTypeForDecl()),
                            Arg.getIsDefaulted());
  }

  case TemplateArgument::NullPtr:
    return TemplateArgument(getCanonicalType(Arg.getNullPtrType()),
                            /*isNullPtr*/ true, Arg.getIsDefaulted());

  case TemplateArgument::Template:
    return TemplateArgument(getCanonicalTemplateName(Arg.getAsTemplate()),
                            Arg.getIsDefaulted());

  case TemplateArgument::TemplateExpansion:
    return TemplateArgument(
        getCanonicalTemplateName(Arg.getAsTemplateOrTemplatePattern()),
        Arg.getNumTemplateExpansions(), Arg.getIsDefaulted());

  case TemplateArgument::Integral:
    return TemplateArgument(Arg, getCanonicalType(Arg.getIntegralType()));

  case TemplateArgument::Type:
    return TemplateArgument(getCanonicalType(Arg.getAsType()),
                            /*isNullPtr*/ false, Arg.getIsDefaulted());

  case TemplateArgument::Pack: {
    bool AnyNonCanonArgs = false;
    auto CanonArgs = ::getCanonicalTemplateArguments(
        *this, Arg.pack_elements(), AnyNonCanonArgs);
    if (!AnyNonCanonArgs)
      return Arg;
    return TemplateArgument::CreatePackCopy(const_cast<ASTContext &>(*this),
                                            CanonArgs);
  }
}

// Silence GCC warning
llvm_unreachable("Unhandled template argument kind")::llvm::llvm_unreachable_internal("Unhandled template argument kind"
, "clang/lib/AST/ASTContext.cpp", 6842);
6843}

6845NestedNameSpecifier *
6846ASTContext::getCanonicalNestedNameSpecifier(NestedNameSpecifier *NNS) const {
if (!NNS)
  return nullptr;

switch (NNS->getKind()) {
case NestedNameSpecifier::Identifier:
  // Canonicalize the prefix but keep the identifier the same.
  return NestedNameSpecifier::Create(*this,
                       getCanonicalNestedNameSpecifier(NNS->getPrefix()),
                                     NNS->getAsIdentifier());

case NestedNameSpecifier::Namespace:
  // A namespace is canonical; build a nested-name-specifier with
  // this namespace and no prefix.
  return NestedNameSpecifier::Create(*this, nullptr,
                               NNS->getAsNamespace()->getOriginalNamespace());

case NestedNameSpecifier::NamespaceAlias:
  // A namespace is canonical; build a nested-name-specifier with
  // this namespace and no prefix.
  return NestedNameSpecifier::Create(*this, nullptr,
                                  NNS->getAsNamespaceAlias()->getNamespace()
                                                    ->getOriginalNamespace());

// The difference between TypeSpec and TypeSpecWithTemplate is that the
// latter will have the 'template' keyword when printed.
case NestedNameSpecifier::TypeSpec:
case NestedNameSpecifier::TypeSpecWithTemplate: {
  const Type *T = getCanonicalType(NNS->getAsType());

  // If we have some kind of dependent-named type (e.g., "typename T::type"),
  // break it apart into its prefix and identifier, then reconsititute those
  // as the canonical nested-name-specifier. This is required to canonicalize
  // a dependent nested-name-specifier involving typedefs of dependent-name
  // types, e.g.,
  //   typedef typename T::type T1;
  //   typedef typename T1::type T2;
  if (const auto *DNT = T->getAs<DependentNameType>())
    return NestedNameSpecifier::Create(
        *this, DNT->getQualifier(),
        const_cast<IdentifierInfo *>(DNT->getIdentifier()));
  if (const auto *DTST = T->getAs<DependentTemplateSpecializationType>())
    return NestedNameSpecifier::Create(*this, DTST->getQualifier(), true,
                                       const_cast<Type *>(T));

  // TODO: Set 'Template' parameter to true for other template types.
  return NestedNameSpecifier::Create(*this, nullptr, false,
                                     const_cast<Type *>(T));
}

case NestedNameSpecifier::Global:
case NestedNameSpecifier::Super:
  // The global specifier and __super specifer are canonical and unique.
  return NNS;
}

llvm_unreachable("Invalid NestedNameSpecifier::Kind!")::llvm::llvm_unreachable_internal("Invalid NestedNameSpecifier::Kind!"
, "clang/lib/AST/ASTContext.cpp", 6902);
6903}

6905const ArrayType *ASTContext::getAsArrayType(QualType T) const {
// Handle the non-qualified case efficiently.
if (!T.hasLocalQualifiers()) {
  // Handle the common positive case fast.
  if (const auto *AT = dyn_cast<ArrayType>(T))
    return AT;
}

// Handle the common negative case fast.
if (!isa<ArrayType>(T.getCanonicalType()))
  return nullptr;

// Apply any qualifiers from the array type to the element type.  This
// implements C99 6.7.3p8: "If the specification of an array type includes
// any type qualifiers, the element type is so qualified, not the array type."

// If we get here, we either have type qualifiers on the type, or we have
// sugar such as a typedef in the way.  If we have type qualifiers on the type
// we must propagate them down into the element type.

SplitQualType split = T.getSplitDesugaredType();
Qualifiers qs = split.Quals;

// If we have a simple case, just return now.
const auto *ATy = dyn_cast<ArrayType>(split.Ty);
if (!ATy || qs.empty())
  return ATy;

// Otherwise, we have an array and we have qualifiers on it.  Push the
// qualifiers into the array element type and return a new array type.
QualType NewEltTy = getQualifiedType(ATy->getElementType(), qs);

if (const auto *CAT = dyn_cast<ConstantArrayType>(ATy))
  return cast<ArrayType>(getConstantArrayType(NewEltTy, CAT->getSize(),
                                              CAT->getSizeExpr(),
                                              CAT->getSizeModifier(),
                                         CAT->getIndexTypeCVRQualifiers()));
if (const auto *IAT = dyn_cast<IncompleteArrayType>(ATy))
  return cast<ArrayType>(getIncompleteArrayType(NewEltTy,
                                                IAT->getSizeModifier(),
                                         IAT->getIndexTypeCVRQualifiers()));

if (const auto *DSAT = dyn_cast<DependentSizedArrayType>(ATy))
  return cast<ArrayType>(
                   getDependentSizedArrayType(NewEltTy,
                                              DSAT->getSizeExpr(),
                                              DSAT->getSizeModifier(),
                                            DSAT->getIndexTypeCVRQualifiers(),
                                              DSAT->getBracketsRange()));

const auto *VAT = cast<VariableArrayType>(ATy);
return cast<ArrayType>(getVariableArrayType(NewEltTy,
                                            VAT->getSizeExpr(),
                                            VAT->getSizeModifier(),
                                            VAT->getIndexTypeCVRQualifiers(),
                                            VAT->getBracketsRange()));
6961}

6963QualType ASTContext::getAdjustedParameterType(QualType T) const {
if (T->isArrayType() || T->isFunctionType())
  return getDecayedType(T);
return T;
6967}

6969QualType ASTContext::getSignatureParameterType(QualType T) const {
T = getVariableArrayDecayedType(T);
T = getAdjustedParameterType(T);
return T.getUnqualifiedType();
6973}

6975QualType ASTContext::getExceptionObjectType(QualType T) const {
// C++ [except.throw]p3:
//   A throw-expression initializes a temporary object, called the exception
//   object, the type of which is determined by removing any top-level
//   cv-qualifiers from the static type of the operand of throw and adjusting
//   the type from "array of T" or "function returning T" to "pointer to T"
//   or "pointer to function returning T", [...]
T = getVariableArrayDecayedType(T);
if (T->isArrayType() || T->isFunctionType())
  T = getDecayedType(T);
return T.getUnqualifiedType();
6986}

6988/// getArrayDecayedType - Return the properly qualified result of decaying the
6989/// specified array type to a pointer.  This operation is non-trivial when
6990/// handling typedefs etc.  The canonical type of "T" must be an array type,
6991/// this returns a pointer to a properly qualified element of the array.
6992///
6993/// See C99 6.7.5.3p7 and C99 6.3.2.1p3.
6994QualType ASTContext::getArrayDecayedType(QualType Ty) const {
// Get the element type with 'getAsArrayType' so that we don't lose any
// typedefs in the element type of the array.  This also handles propagation
// of type qualifiers from the array type into the element type if present
// (C99 6.7.3p8).
const ArrayType *PrettyArrayType = getAsArrayType(Ty);
assert(PrettyArrayType && "Not an array type!")(static_cast <bool> (PrettyArrayType && "Not an array type!"
) ? void (0) : __assert_fail ("PrettyArrayType && \"Not an array type!\""
, "clang/lib/AST/ASTContext.cpp", 7000, __extension__ __PRETTY_FUNCTION__
));

QualType PtrTy = getPointerType(PrettyArrayType->getElementType());

// int x[restrict 4] ->  int *restrict
QualType Result = getQualifiedType(PtrTy,
                                   PrettyArrayType->getIndexTypeQualifiers());

// int x[_Nullable] -> int * _Nullable
if (auto Nullability = Ty->getNullability()) {
  Result = const_cast<ASTContext *>(this)->getAttributedType(
      AttributedType::getNullabilityAttrKind(*Nullability), Result, Result);
}
return Result;
7014}

7016QualType ASTContext::getBaseElementType(const ArrayType *array) const {
return getBaseElementType(array->getElementType());
7018}

7020QualType ASTContext::getBaseElementType(QualType type) const {
Qualifiers qs;
while (true) {
  SplitQualType split = type.getSplitDesugaredType();
  const ArrayType *array = split.Ty->getAsArrayTypeUnsafe();
  if (!array) break;

  type = array->getElementType();
  qs.addConsistentQualifiers(split.Quals);
}

return getQualifiedType(type, qs);
7032}

7034/// getConstantArrayElementCount - Returns number of constant array elements.
7035uint64_t
7036ASTContext::getConstantArrayElementCount(const ConstantArrayType *CA)  const {
uint64_t ElementCount = 1;
do {
  ElementCount *= CA->getSize().getZExtValue();
  CA = dyn_cast_or_null<ConstantArrayType>(
    CA->getElementType()->getAsArrayTypeUnsafe());
} while (CA);
return ElementCount;
7044}

7046uint64_t ASTContext::getArrayInitLoopExprElementCount(
  const ArrayInitLoopExpr *AILE) const {
if (!AILE)
  return 0;

uint64_t ElementCount = 1;

do {
  ElementCount *= AILE->getArraySize().getZExtValue();
  AILE = dyn_cast<ArrayInitLoopExpr>(AILE->getSubExpr());
} while (AILE);

return ElementCount;
7059}

7061/// getFloatingRank - Return a relative rank for floating point types.
7062/// This routine will assert if passed a built-in type that isn't a float.
7063static FloatingRank getFloatingRank(QualType T) {
if (const auto *CT = T->getAs<ComplexType>())
  return getFloatingRank(CT->getElementType());

switch (T->castAs<BuiltinType>()->getKind()) {
default: llvm_unreachable("getFloatingRank(): not a floating type")::llvm::llvm_unreachable_internal("getFloatingRank(): not a floating type"
, "clang/lib/AST/ASTContext.cpp", 7068);
case BuiltinType::Float16:    return Float16Rank;
case BuiltinType::Half:       return HalfRank;
case BuiltinType::Float:      return FloatRank;
case BuiltinType::Double:     return DoubleRank;
case BuiltinType::LongDouble: return LongDoubleRank;
case BuiltinType::Float128:   return Float128Rank;
case BuiltinType::BFloat16:   return BFloat16Rank;
case BuiltinType::Ibm128:     return Ibm128Rank;
}
7078}

7080/// getFloatingTypeOrder - Compare the rank of the two specified floating
7081/// point types, ignoring the domain of the type (i.e. 'double' ==
7082/// '_Complex double').  If LHS > RHS, return 1.  If LHS == RHS, return 0. If
7083/// LHS < RHS, return -1.
7084int ASTContext::getFloatingTypeOrder(QualType LHS, QualType RHS) const {
FloatingRank LHSR = getFloatingRank(LHS);
FloatingRank RHSR = getFloatingRank(RHS);

if (LHSR == RHSR)
  return 0;
if (LHSR > RHSR)
  return 1;
return -1;
7093}

7095int ASTContext::getFloatingTypeSemanticOrder(QualType LHS, QualType RHS) const {
if (&getFloatTypeSemantics(LHS) == &getFloatTypeSemantics(RHS))
  return 0;
return getFloatingTypeOrder(LHS, RHS);
7099}

7101/// getIntegerRank - Return an integer conversion rank (C99 6.3.1.1p1). This
7102/// routine will assert if passed a built-in type that isn't an integer or enum,
7103/// or if it is not canonicalized.
7104unsigned ASTContext::getIntegerRank(const Type *T) const {
assert(T->isCanonicalUnqualified() && "T should be canonicalized")(static_cast <bool> (T->isCanonicalUnqualified() &&
 "T should be canonicalized") ? void (0) : __assert_fail ("T->isCanonicalUnqualified() && \"T should be canonicalized\""
, "clang/lib/AST/ASTContext.cpp", 7105, __extension__ __PRETTY_FUNCTION__
));

// Results in this 'losing' to any type of the same size, but winning if
// larger.
if (const auto *EIT = dyn_cast<BitIntType>(T))
  return 0 + (EIT->getNumBits() << 3);

switch (cast<BuiltinType>(T)->getKind()) {
default: llvm_unreachable("getIntegerRank(): not a built-in integer")::llvm::llvm_unreachable_internal("getIntegerRank(): not a built-in integer"
, "clang/lib/AST/ASTContext.cpp", 7113);
case BuiltinType::Bool:
  return 1 + (getIntWidth(BoolTy) << 3);
case BuiltinType::Char_S:
case BuiltinType::Char_U:
case BuiltinType::SChar:
case BuiltinType::UChar:
  return 2 + (getIntWidth(CharTy) << 3);
case BuiltinType::Short:
case BuiltinType::UShort:
  return 3 + (getIntWidth(ShortTy) << 3);
case BuiltinType::Int:
case BuiltinType::UInt:
  return 4 + (getIntWidth(IntTy) << 3);
case BuiltinType::Long:
case BuiltinType::ULong:
  return 5 + (getIntWidth(LongTy) << 3);
case BuiltinType::LongLong:
case BuiltinType::ULongLong:
  return 6 + (getIntWidth(LongLongTy) << 3);
case BuiltinType::Int128:
case BuiltinType::UInt128:
  return 7 + (getIntWidth(Int128Ty) << 3);

// "The ranks of char8_t, char16_t, char32_t, and wchar_t equal the ranks of
// their underlying types" [c++20 conv.rank]
case BuiltinType::Char8:
  return getIntegerRank(UnsignedCharTy.getTypePtr());
case BuiltinType::Char16:
  return getIntegerRank(
      getFromTargetType(Target->getChar16Type()).getTypePtr());
case BuiltinType::Char32:
  return getIntegerRank(
      getFromTargetType(Target->getChar32Type()).getTypePtr());
case BuiltinType::WChar_S:
case BuiltinType::WChar_U:
  return getIntegerRank(
      getFromTargetType(Target->getWCharType()).getTypePtr());
}
7152}

7154/// Whether this is a promotable bitfield reference according
7155/// to C99 6.3.1.1p2, bullet 2 (and GCC extensions).
7156///
7157/// \returns the type this bit-field will promote to, or NULL if no
7158/// promotion occurs.
7159QualType ASTContext::isPromotableBitField(Expr *E) const {
if (E->isTypeDependent() || E->isValueDependent())
  return {};

// C++ [conv.prom]p5:
//    If the bit-field has an enumerated type, it is treated as any other
//    value of that type for promotion purposes.
if (getLangOpts().CPlusPlus && E->getType()->isEnumeralType())
  return {};

// FIXME: We should not do this unless E->refersToBitField() is true. This
// matters in C where getSourceBitField() will find bit-fields for various
// cases where the source expression is not a bit-field designator.

FieldDecl *Field = E->getSourceBitField(); // FIXME: conditional bit-fields?
if (!Field)
  return {};

QualType FT = Field->getType();

uint64_t BitWidth = Field->getBitWidthValue(*this);
uint64_t IntSize = getTypeSize(IntTy);
// C++ [conv.prom]p5:
//   A prvalue for an integral bit-field can be converted to a prvalue of type
//   int if int can represent all the values of the bit-field; otherwise, it
//   can be converted to unsigned int if unsigned int can represent all the
//   values of the bit-field. If the bit-field is larger yet, no integral
//   promotion applies to it.
// C11 6.3.1.1/2:
//   [For a bit-field of type _Bool, int, signed int, or unsigned int:]
//   If an int can represent all values of the original type (as restricted by
//   the width, for a bit-field), the value is converted to an int; otherwise,
//   it is converted to an unsigned int.
//
// FIXME: C does not permit promotion of a 'long : 3' bitfield to int.
//        We perform that promotion here to match GCC and C++.
// FIXME: C does not permit promotion of an enum bit-field whose rank is
//        greater than that of 'int'. We perform that promotion to match GCC.
if (BitWidth < IntSize)
  return IntTy;

if (BitWidth == IntSize)
  return FT->isSignedIntegerType() ? IntTy : UnsignedIntTy;

// Bit-fields wider than int are not subject to promotions, and therefore act
// like the base type. GCC has some weird bugs in this area that we
// deliberately do not follow (GCC follows a pre-standard resolution to
// C's DR315 which treats bit-width as being part of the type, and this leaks
// into their semantics in some cases).
return {};
7209}

7211/// getPromotedIntegerType - Returns the type that Promotable will
7212/// promote to: C99 6.3.1.1p2, assuming that Promotable is a promotable
7213/// integer type.
7214QualType ASTContext::getPromotedIntegerType(QualType Promotable) const {
assert(!Promotable.isNull())(static_cast <bool> (!Promotable.isNull()) ? void (0) :
 __assert_fail ("!Promotable.isNull()", "clang/lib/AST/ASTContext.cpp"
, 7215, __extension__ __PRETTY_FUNCTION__));
assert(isPromotableIntegerType(Promotable))(static_cast <bool> (isPromotableIntegerType(Promotable
)) ? void (0) : __assert_fail ("isPromotableIntegerType(Promotable)"
, "clang/lib/AST/ASTContext.cpp", 7216, __extension__ __PRETTY_FUNCTION__
));
if (const auto *ET = Promotable->getAs<EnumType>())
  return ET->getDecl()->getPromotionType();

if (const auto *BT = Promotable->getAs<BuiltinType>()) {
  // C++ [conv.prom]: A prvalue of type char16_t, char32_t, or wchar_t
  // (3.9.1) can be converted to a prvalue of the first of the following
  // types that can represent all the values of its underlying type:
  // int, unsigned int, long int, unsigned long int, long long int, or
  // unsigned long long int [...]
  // FIXME: Is there some better way to compute this?
  if (BT->getKind() == BuiltinType::WChar_S ||
      BT->getKind() == BuiltinType::WChar_U ||
      BT->getKind() == BuiltinType::Char8 ||
      BT->getKind() == BuiltinType::Char16 ||
      BT->getKind() == BuiltinType::Char32) {
    bool FromIsSigned = BT->getKind() == BuiltinType::WChar_S;
    uint64_t FromSize = getTypeSize(BT);
    QualType PromoteTypes[] = { IntTy, UnsignedIntTy, LongTy, UnsignedLongTy,
                                LongLongTy, UnsignedLongLongTy };
    for (const auto &PT : PromoteTypes) {
      uint64_t ToSize = getTypeSize(PT);
      if (FromSize < ToSize ||
          (FromSize == ToSize && FromIsSigned == PT->isSignedIntegerType()))
        return PT;
    }
    llvm_unreachable("char type should fit into long long")::llvm::llvm_unreachable_internal("char type should fit into long long"
, "clang/lib/AST/ASTContext.cpp", 7242);
  }
}

// At this point, we should have a signed or unsigned integer type.
if (Promotable->isSignedIntegerType())
  return IntTy;
uint64_t PromotableSize = getIntWidth(Promotable);
uint64_t IntSize = getIntWidth(IntTy);
assert(Promotable->isUnsignedIntegerType() && PromotableSize <= IntSize)(static_cast <bool> (Promotable->isUnsignedIntegerType
() && PromotableSize <= IntSize) ? void (0) : __assert_fail
 ("Promotable->isUnsignedIntegerType() && PromotableSize <= IntSize"
, "clang/lib/AST/ASTContext.cpp", 7251, __extension__ __PRETTY_FUNCTION__
));
return (PromotableSize != IntSize) ? IntTy : UnsignedIntTy;
7253}

7255/// Recurses in pointer/array types until it finds an objc retainable
7256/// type and returns its ownership.
7257Qualifiers::ObjCLifetime ASTContext::getInnerObjCOwnership(QualType T) const {
while (!T.isNull()) {
  if (T.getObjCLifetime() != Qualifiers::OCL_None)
    return T.getObjCLifetime();
  if (T->isArrayType())
    T = getBaseElementType(T);
  else if (const auto *PT = T->getAs<PointerType>())
    T = PT->getPointeeType();
  else if (const auto *RT = T->getAs<ReferenceType>())
    T = RT->getPointeeType();
  else
    break;
}

return Qualifiers::OCL_None;
7272}

7274static const Type *getIntegerTypeForEnum(const EnumType *ET) {
// Incomplete enum types are not treated as integer types.
// FIXME: In C++, enum types are never integer types.
if (ET->getDecl()->isComplete() && !ET->getDecl()->isScoped())
  return ET->getDecl()->getIntegerType().getTypePtr();
return nullptr;
7280}

7282/// getIntegerTypeOrder - Returns the highest ranked integer type:
7283/// C99 6.3.1.8p1.  If LHS > RHS, return 1.  If LHS == RHS, return 0. If
7284/// LHS < RHS, return -1.
7285int ASTContext::getIntegerTypeOrder(QualType LHS, QualType RHS) const {
const Type *LHSC = getCanonicalType(LHS).getTypePtr();
const Type *RHSC = getCanonicalType(RHS).getTypePtr();

// Unwrap enums to their underlying type.
if (const auto *ET = dyn_cast<EnumType>(LHSC))
  LHSC = getIntegerTypeForEnum(ET);
if (const auto *ET = dyn_cast<EnumType>(RHSC))
  RHSC = getIntegerTypeForEnum(ET);

if (LHSC == RHSC) return 0;

bool LHSUnsigned = LHSC->isUnsignedIntegerType();
bool RHSUnsigned = RHSC->isUnsignedIntegerType();

unsigned LHSRank = getIntegerRank(LHSC);
unsigned RHSRank = getIntegerRank(RHSC);

if (LHSUnsigned == RHSUnsigned) {  // Both signed or both unsigned.
  if (LHSRank == RHSRank) return 0;
  return LHSRank > RHSRank ? 1 : -1;
}

// Otherwise, the LHS is signed and the RHS is unsigned or visa versa.
if (LHSUnsigned) {
  // If the unsigned [LHS] type is larger, return it.
  if (LHSRank >= RHSRank)
    return 1;

  // If the signed type can represent all values of the unsigned type, it
  // wins.  Because we are dealing with 2's complement and types that are
  // powers of two larger than each other, this is always safe.
  return -1;
}

// If the unsigned [RHS] type is larger, return it.
if (RHSRank >= LHSRank)
  return -1;

// If the signed type can represent all values of the unsigned type, it
// wins.  Because we are dealing with 2's complement and types that are
// powers of two larger than each other, this is always safe.
return 1;
7328}

7330TypedefDecl *ASTContext::getCFConstantStringDecl() const {
if (CFConstantStringTypeDecl)
  return CFConstantStringTypeDecl;

assert(!CFConstantStringTagDecl &&(static_cast <bool> (!CFConstantStringTagDecl &&
 "tag and typedef should be initialized together") ? void (0)
 : __assert_fail ("!CFConstantStringTagDecl && \"tag and typedef should be initialized together\""
, "clang/lib/AST/ASTContext.cpp", 7335, __extension__ __PRETTY_FUNCTION__
))
       "tag and typedef should be initialized together")(static_cast <bool> (!CFConstantStringTagDecl &&
 "tag and typedef should be initialized together") ? void (0)
 : __assert_fail ("!CFConstantStringTagDecl && \"tag and typedef should be initialized together\""
, "clang/lib/AST/ASTContext.cpp", 7335, __extension__ __PRETTY_FUNCTION__
));
CFConstantStringTagDecl = buildImplicitRecord("__NSConstantString_tag");
CFConstantStringTagDecl->startDefinition();

struct {
  QualType Type;
  const char *Name;
} Fields[5];
unsigned Count = 0;

/// Objective-C ABI
///
///    typedef struct __NSConstantString_tag {
///      const int *isa;
///      int flags;
///      const char *str;
///      long length;
///    } __NSConstantString;
///
/// Swift ABI (4.1, 4.2)
///
///    typedef struct __NSConstantString_tag {
///      uintptr_t _cfisa;
///      uintptr_t _swift_rc;
///      _Atomic(uint64_t) _cfinfoa;
///      const char *_ptr;
///      uint32_t _length;
///    } __NSConstantString;
///
/// Swift ABI (5.0)
///
///    typedef struct __NSConstantString_tag {
///      uintptr_t _cfisa;
///      uintptr_t _swift_rc;
///      _Atomic(uint64_t) _cfinfoa;
///      const char *_ptr;
///      uintptr_t _length;
///    } __NSConstantString;

const auto CFRuntime = getLangOpts().CFRuntime;
if (static_cast<unsigned>(CFRuntime) <
    static_cast<unsigned>(LangOptions::CoreFoundationABI::Swift)) {
  Fields[Count++] = { getPointerType(IntTy.withConst()), "isa" };
  Fields[Count++] = { IntTy, "flags" };
  Fields[Count++] = { getPointerType(CharTy.withConst()), "str" };
  Fields[Count++] = { LongTy, "length" };
} else {
  Fields[Count++] = { getUIntPtrType(), "_cfisa" };
  Fields[Count++] = { getUIntPtrType(), "_swift_rc" };
  Fields[Count++] = { getFromTargetType(Target->getUInt64Type()), "_swift_rc" };
  Fields[Count++] = { getPointerType(CharTy.withConst()), "_ptr" };
  if (CFRuntime == LangOptions::CoreFoundationABI::Swift4_1 ||
      CFRuntime == LangOptions::CoreFoundationABI::Swift4_2)
    Fields[Count++] = { IntTy, "_ptr" };
  else
    Fields[Count++] = { getUIntPtrType(), "_ptr" };
}

// Create fields
for (unsigned i = 0; i < Count; ++i) {
  FieldDecl *Field =
      FieldDecl::Create(*this, CFConstantStringTagDecl, SourceLocation(),
                        SourceLocation(), &Idents.get(Fields[i].Name),
                        Fields[i].Type, /*TInfo=*/nullptr,
                        /*BitWidth=*/nullptr, /*Mutable=*/false, ICIS_NoInit);
  Field->setAccess(AS_public);
  CFConstantStringTagDecl->addDecl(Field);
}

CFConstantStringTagDecl->completeDefinition();
// This type is designed to be compatible with NSConstantString, but cannot
// use the same name, since NSConstantString is an interface.
auto tagType = getTagDeclType(CFConstantStringTagDecl);
CFConstantStringTypeDecl =
    buildImplicitTypedef(tagType, "__NSConstantString");

return CFConstantStringTypeDecl;
7412}

7414RecordDecl *ASTContext::getCFConstantStringTagDecl() const {
if (!CFConstantStringTagDecl)
  getCFConstantStringDecl(); // Build the tag and the typedef.
return CFConstantStringTagDecl;
7418}

7420// getCFConstantStringType - Return the type used for constant CFStrings.
7421QualType ASTContext::getCFConstantStringType() const {
return getTypedefType(getCFConstantStringDecl());
7423}

7425QualType ASTContext::getObjCSuperType() const {
if (ObjCSuperType.isNull()) {
  RecordDecl *ObjCSuperTypeDecl = buildImplicitRecord("objc_super");
  getTranslationUnitDecl()->addDecl(ObjCSuperTypeDecl);
  ObjCSuperType = getTagDeclType(ObjCSuperTypeDecl);
}
return ObjCSuperType;
7432}

7434void ASTContext::setCFConstantStringType(QualType T) {
const auto *TD = T->castAs<TypedefType>();
CFConstantStringTypeDecl = cast<TypedefDecl>(TD->getDecl());
const auto *TagType =
    CFConstantStringTypeDecl->getUnderlyingType()->castAs<RecordType>();
CFConstantStringTagDecl = TagType->getDecl();
7440}

7442QualType ASTContext::getBlockDescriptorType() const {
if (BlockDescriptorType)
  return getTagDeclType(BlockDescriptorType);

RecordDecl *RD;
// FIXME: Needs the FlagAppleBlock bit.
RD = buildImplicitRecord("__block_descriptor");
RD->startDefinition();

QualType FieldTypes[] = {
  UnsignedLongTy,
  UnsignedLongTy,
};

static const char *const FieldNames[] = {
  "reserved",
  "Size"
};

for (size_t i = 0; i < 2; ++i) {
  FieldDecl *Field = FieldDecl::Create(
      *this, RD, SourceLocation(), SourceLocation(),
      &Idents.get(FieldNames[i]), FieldTypes[i], /*TInfo=*/nullptr,
      /*BitWidth=*/nullptr, /*Mutable=*/false, ICIS_NoInit);
  Field->setAccess(AS_public);
  RD->addDecl(Field);
}

RD->completeDefinition();

BlockDescriptorType = RD;

return getTagDeclType(BlockDescriptorType);
7475}

7477QualType ASTContext::getBlockDescriptorExtendedType() const {
if (BlockDescriptorExtendedType)
  return getTagDeclType(BlockDescriptorExtendedType);

RecordDecl *RD;
// FIXME: Needs the FlagAppleBlock bit.
RD = buildImplicitRecord("__block_descriptor_withcopydispose");
RD->startDefinition();

QualType FieldTypes[] = {
  UnsignedLongTy,
  UnsignedLongTy,
  getPointerType(VoidPtrTy),
  getPointerType(VoidPtrTy)
};

static const char *const FieldNames[] = {
  "reserved",
  "Size",
  "CopyFuncPtr",
  "DestroyFuncPtr"
};

for (size_t i = 0; i < 4; ++i) {
  FieldDecl *Field = FieldDecl::Create(
      *this, RD, SourceLocation(), SourceLocation(),
      &Idents.get(FieldNames[i]), FieldTypes[i], /*TInfo=*/nullptr,
      /*BitWidth=*/nullptr,
      /*Mutable=*/false, ICIS_NoInit);
  Field->setAccess(AS_public);
  RD->addDecl(Field);
}

RD->completeDefinition();

BlockDescriptorExtendedType = RD;
return getTagDeclType(BlockDescriptorExtendedType);
7514}

7516OpenCLTypeKind ASTContext::getOpenCLTypeKind(const Type *T) const {
const auto *BT = dyn_cast<BuiltinType>(T);

if (!BT) {
  if (isa<PipeType>(T))
    return OCLTK_Pipe;

  return OCLTK_Default;
}

switch (BT->getKind()) {
7527#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix)                   \
case BuiltinType::Id:                                                        \
  return OCLTK_Image;
7530#include "clang/Basic/OpenCLImageTypes.def"

case BuiltinType::OCLClkEvent:
  return OCLTK_ClkEvent;

case BuiltinType::OCLEvent:
  return OCLTK_Event;

case BuiltinType::OCLQueue:
  return OCLTK_Queue;

case BuiltinType::OCLReserveID:
  return OCLTK_ReserveID;

case BuiltinType::OCLSampler:
  return OCLTK_Sampler;

default:
  return OCLTK_Default;
}
7550}

7552LangAS ASTContext::getOpenCLTypeAddrSpace(const Type *T) const {
return Target->getOpenCLTypeAddrSpace(getOpenCLTypeKind(T));
7554}

7556/// BlockRequiresCopying - Returns true if byref variable "D" of type "Ty"
7557/// requires copy/dispose. Note that this must match the logic
7558/// in buildByrefHelpers.
7559bool ASTContext::BlockRequiresCopying(QualType Ty,
                                    const VarDecl *D) {
if (const CXXRecordDecl *record = Ty->getAsCXXRecordDecl()) {
  const Expr *copyExpr = getBlockVarCopyInit(D).getCopyExpr();
  if (!copyExpr && record->hasTrivialDestructor()) return false;

  return true;
}

// The block needs copy/destroy helpers if Ty is non-trivial to destructively
// move or destroy.
if (Ty.isNonTrivialToPrimitiveDestructiveMove() || Ty.isDestructedType())
  return true;

if (!Ty->isObjCRetainableType()) return false;

Qualifiers qs = Ty.getQualifiers();

// If we have lifetime, that dominates.
if (Qualifiers::ObjCLifetime lifetime = qs.getObjCLifetime()) {
  switch (lifetime) {
    case Qualifiers::OCL_None: llvm_unreachable("impossible")::llvm::llvm_unreachable_internal("impossible", "clang/lib/AST/ASTContext.cpp"
, 7580);

    // These are just bits as far as the runtime is concerned.
    case Qualifiers::OCL_ExplicitNone:
    case Qualifiers::OCL_Autoreleasing:
      return false;

    // These cases should have been taken care of when checking the type's
    // non-triviality.
    case Qualifiers::OCL_Weak:
    case Qualifiers::OCL_Strong:
      llvm_unreachable("impossible")::llvm::llvm_unreachable_internal("impossible", "clang/lib/AST/ASTContext.cpp"
, 7591);
  }
  llvm_unreachable("fell out of lifetime switch!")::llvm::llvm_unreachable_internal("fell out of lifetime switch!"
, "clang/lib/AST/ASTContext.cpp", 7593);
}
return (Ty->isBlockPointerType() || isObjCNSObjectType(Ty) ||
        Ty->isObjCObjectPointerType());
7597}

7599bool ASTContext::getByrefLifetime(QualType Ty,
                            Qualifiers::ObjCLifetime &LifeTime,
                            bool &HasByrefExtendedLayout) const {
if (!getLangOpts().ObjC ||
    getLangOpts().getGC() != LangOptions::NonGC)
  return false;

HasByrefExtendedLayout = false;
if (Ty->isRecordType()) {
  HasByrefExtendedLayout = true;
  LifeTime = Qualifiers::OCL_None;
} else if ((LifeTime = Ty.getObjCLifetime())) {
  // Honor the ARC qualifiers.
} else if (Ty->isObjCObjectPointerType() || Ty->isBlockPointerType()) {
  // The MRR rule.
  LifeTime = Qualifiers::OCL_ExplicitNone;
} else {
  LifeTime = Qualifiers::OCL_None;
}
return true;
7619}

7621CanQualType ASTContext::getNSUIntegerType() const {
assert(Target && "Expected target to be initialized")(static_cast <bool> (Target && "Expected target to be initialized"
) ? void (0) : __assert_fail ("Target && \"Expected target to be initialized\""
, "clang/lib/AST/ASTContext.cpp", 7622, __extension__ __PRETTY_FUNCTION__
));
const llvm::Triple &T = Target->getTriple();
// Windows is LLP64 rather than LP64
if (T.isOSWindows() && T.isArch64Bit())
  return UnsignedLongLongTy;
return UnsignedLongTy;
7628}

7630CanQualType ASTContext::getNSIntegerType() const {
assert(Target && "Expected target to be initialized")(static_cast <bool> (Target && "Expected target to be initialized"
) ? void (0) : __assert_fail ("Target && \"Expected target to be initialized\""
, "clang/lib/AST/ASTContext.cpp", 7631, __extension__ __PRETTY_FUNCTION__
));
const llvm::Triple &T = Target->getTriple();
// Windows is LLP64 rather than LP64
if (T.isOSWindows() && T.isArch64Bit())
  return LongLongTy;
return LongTy;
7637}

7639TypedefDecl *ASTContext::getObjCInstanceTypeDecl() {
if (!ObjCInstanceTypeDecl)
  ObjCInstanceTypeDecl =
      buildImplicitTypedef(getObjCIdType(), "instancetype");
return ObjCInstanceTypeDecl;
7644}

7646// This returns true if a type has been typedefed to BOOL:
7647// typedef <type> BOOL;
7648static bool isTypeTypedefedAsBOOL(QualType T) {
if (const auto *TT = dyn_cast<TypedefType>(T))
  if (IdentifierInfo *II = TT->getDecl()->getIdentifier())
    return II->isStr("BOOL");

return false;
7654}

7656/// getObjCEncodingTypeSize returns size of type for objective-c encoding
7657/// purpose.
7658CharUnits ASTContext::getObjCEncodingTypeSize(QualType type) const {
if (!type->isIncompleteArrayType() && type->isIncompleteType())
  return CharUnits::Zero();

CharUnits sz = getTypeSizeInChars(type);

// Make all integer and enum types at least as large as an int
if (sz.isPositive() && type->isIntegralOrEnumerationType())
  sz = std::max(sz, getTypeSizeInChars(IntTy));
// Treat arrays as pointers, since that's how they're passed in.
else if (type->isArrayType())
  sz = getTypeSizeInChars(VoidPtrTy);
return sz;
7671}

7673bool ASTContext::isMSStaticDataMemberInlineDefinition(const VarDecl *VD) const {
return getTargetInfo().getCXXABI().isMicrosoft() &&
       VD->isStaticDataMember() &&
       VD->getType()->isIntegralOrEnumerationType() &&
       !VD->getFirstDecl()->isOutOfLine() && VD->getFirstDecl()->hasInit();
7678}

7680ASTContext::InlineVariableDefinitionKind
7681ASTContext::getInlineVariableDefinitionKind(const VarDecl *VD) const {
if (!VD->isInline())
  return InlineVariableDefinitionKind::None;

// In almost all cases, it's a weak definition.
auto *First = VD->getFirstDecl();
if (First->isInlineSpecified() || !First->isStaticDataMember())
  return InlineVariableDefinitionKind::Weak;

// If there's a file-context declaration in this translation unit, it's a
// non-discardable definition.
for (auto *D : VD->redecls())
  if (D->getLexicalDeclContext()->isFileContext() &&
      !D->isInlineSpecified() && (D->isConstexpr() || First->isConstexpr()))
    return InlineVariableDefinitionKind::Strong;

// If we've not seen one yet, we don't know.
return InlineVariableDefinitionKind::WeakUnknown;
7699}

7701static std::string charUnitsToString(const CharUnits &CU) {
return llvm::itostr(CU.getQuantity());
7703}

7705/// getObjCEncodingForBlock - Return the encoded type for this block
7706/// declaration.
7707std::string ASTContext::getObjCEncodingForBlock(const BlockExpr *Expr) const {
std::string S;

const BlockDecl *Decl = Expr->getBlockDecl();
QualType BlockTy =
    Expr->getType()->castAs<BlockPointerType>()->getPointeeType();
QualType BlockReturnTy = BlockTy->castAs<FunctionType>()->getReturnType();
// Encode result type.
if (getLangOpts().EncodeExtendedBlockSig)
  getObjCEncodingForMethodParameter(Decl::OBJC_TQ_None, BlockReturnTy, S,
                                    true /*Extended*/);
else
  getObjCEncodingForType(BlockReturnTy, S);
// Compute size of all parameters.
// Start with computing size of a pointer in number of bytes.
// FIXME: There might(should) be a better way of doing this computation!
CharUnits PtrSize = getTypeSizeInChars(VoidPtrTy);
CharUnits ParmOffset = PtrSize;
for (auto *PI : Decl->parameters()) {
  QualType PType = PI->getType();
  CharUnits sz = getObjCEncodingTypeSize(PType);
  if (sz.isZero())
    continue;
  assert(sz.isPositive() && "BlockExpr - Incomplete param type")(static_cast <bool> (sz.isPositive() && "BlockExpr - Incomplete param type"
) ? void (0) : __assert_fail ("sz.isPositive() && \"BlockExpr - Incomplete param type\""
, "clang/lib/AST/ASTContext.cpp", 7730, __extension__ __PRETTY_FUNCTION__
));
  ParmOffset += sz;
}
// Size of the argument frame
S += charUnitsToString(ParmOffset);
// Block pointer and offset.
S += "@?0";

// Argument types.
ParmOffset = PtrSize;
for (auto *PVDecl : Decl->parameters()) {
  QualType PType = PVDecl->getOriginalType();
  if (const auto *AT =
          dyn_cast<ArrayType>(PType->getCanonicalTypeInternal())) {
    // Use array's original type only if it has known number of
    // elements.
    if (!isa<ConstantArrayType>(AT))
      PType = PVDecl->getType();
  } else if (PType->isFunctionType())
    PType = PVDecl->getType();
  if (getLangOpts().EncodeExtendedBlockSig)
    getObjCEncodingForMethodParameter(Decl::OBJC_TQ_None, PType,
                                    S, true /*Extended*/);
  else
    getObjCEncodingForType(PType, S);
  S += charUnitsToString(ParmOffset);
  ParmOffset += getObjCEncodingTypeSize(PType);
}

return S;
7760}

7762std::string
7763ASTContext::getObjCEncodingForFunctionDecl(const FunctionDecl *Decl) const {
std::string S;
// Encode result type.
getObjCEncodingForType(Decl->getReturnType(), S);
CharUnits ParmOffset;
// Compute size of all parameters.
for (auto *PI : Decl->parameters()) {
  QualType PType = PI->getType();
  CharUnits sz = getObjCEncodingTypeSize(PType);
  if (sz.isZero())
    continue;

  assert(sz.isPositive() &&(static_cast <bool> (sz.isPositive() && "getObjCEncodingForFunctionDecl - Incomplete param type"
) ? void (0) : __assert_fail ("sz.isPositive() && \"getObjCEncodingForFunctionDecl - Incomplete param type\""
, "clang/lib/AST/ASTContext.cpp", 7776, __extension__ __PRETTY_FUNCTION__
))
         "getObjCEncodingForFunctionDecl - Incomplete param type")(static_cast <bool> (sz.isPositive() && "getObjCEncodingForFunctionDecl - Incomplete param type"
) ? void (0) : __assert_fail ("sz.isPositive() && \"getObjCEncodingForFunctionDecl - Incomplete param type\""
, "clang/lib/AST/ASTContext.cpp", 7776, __extension__ __PRETTY_FUNCTION__
));
  ParmOffset += sz;
}
S += charUnitsToString(ParmOffset);
ParmOffset = CharUnits::Zero();

// Argument types.
for (auto *PVDecl : Decl->parameters()) {
  QualType PType = PVDecl->getOriginalType();
  if (const auto *AT =
          dyn_cast<ArrayType>(PType->getCanonicalTypeInternal())) {
    // Use array's original type only if it has known number of
    // elements.
    if (!isa<ConstantArrayType>(AT))
      PType = PVDecl->getType();
  } else if (PType->isFunctionType())
    PType = PVDecl->getType();
  getObjCEncodingForType(PType, S);
  S += charUnitsToString(ParmOffset);
  ParmOffset += getObjCEncodingTypeSize(PType);
}

return S;
7799}

7801/// getObjCEncodingForMethodParameter - Return the encoded type for a single
7802/// method parameter or return type. If Extended, include class names and
7803/// block object types.
7804void ASTContext::getObjCEncodingForMethodParameter(Decl::ObjCDeclQualifier QT,
                                                 QualType T, std::string& S,
                                                 bool Extended) const {
// Encode type qualifier, 'in', 'inout', etc. for the parameter.
getObjCEncodingForTypeQualifier(QT, S);
// Encode parameter type.
ObjCEncOptions Options = ObjCEncOptions()
                             .setExpandPointedToStructures()
                             .setExpandStructures()
                             .setIsOutermostType();
if (Extended)
  Options.setEncodeBlockParameters().setEncodeClassNames();
getObjCEncodingForTypeImpl(T, S, Options, /*Field=*/nullptr);
7817}

7819/// getObjCEncodingForMethodDecl - Return the encoded type for this method
7820/// declaration.
7821std::string ASTContext::getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl,
                                                   bool Extended) const {
// FIXME: This is not very efficient.
// Encode return type.
std::string S;
getObjCEncodingForMethodParameter(Decl->getObjCDeclQualifier(),
                                  Decl->getReturnType(), S, Extended);
// Compute size of all parameters.
// Start with computing size of a pointer in number of bytes.
// FIXME: There might(should) be a better way of doing this computation!
CharUnits PtrSize = getTypeSizeInChars(VoidPtrTy);
// The first two arguments (self and _cmd) are pointers; account for
// their size.
CharUnits ParmOffset = 2 * PtrSize;
for (ObjCMethodDecl::param_const_iterator PI = Decl->param_begin(),
     E = Decl->sel_param_end(); PI != E; ++PI) {
  QualType PType = (*PI)->getType();
  CharUnits sz = getObjCEncodingTypeSize(PType);
  if (sz.isZero())
    continue;

  assert(sz.isPositive() &&(static_cast <bool> (sz.isPositive() && "getObjCEncodingForMethodDecl - Incomplete param type"
) ? void (0) : __assert_fail ("sz.isPositive() && \"getObjCEncodingForMethodDecl - Incomplete param type\""
, "clang/lib/AST/ASTContext.cpp", 7843, __extension__ __PRETTY_FUNCTION__
))
         "getObjCEncodingForMethodDecl - Incomplete param type")(static_cast <bool> (sz.isPositive() && "getObjCEncodingForMethodDecl - Incomplete param type"
) ? void (0) : __assert_fail ("sz.isPositive() && \"getObjCEncodingForMethodDecl - Incomplete param type\""
, "clang/lib/AST/ASTContext.cpp", 7843, __extension__ __PRETTY_FUNCTION__
));
  ParmOffset += sz;
}
S += charUnitsToString(ParmOffset);
S += "@0:";
S += charUnitsToString(PtrSize);

// Argument types.
ParmOffset = 2 * PtrSize;
for (ObjCMethodDecl::param_const_iterator PI = Decl->param_begin(),
     E = Decl->sel_param_end(); PI != E; ++PI) {
  const ParmVarDecl *PVDecl = *PI;
  QualType PType = PVDecl->getOriginalType();
  if (const auto *AT =
          dyn_cast<ArrayType>(PType->getCanonicalTypeInternal())) {
    // Use array's original type only if it has known number of
    // elements.
    if (!isa<ConstantArrayType>(AT))
      PType = PVDecl->getType();
  } else if (PType->isFunctionType())
    PType = PVDecl->getType();
  getObjCEncodingForMethodParameter(PVDecl->getObjCDeclQualifier(),
                                    PType, S, Extended);
  S += charUnitsToString(ParmOffset);
  ParmOffset += getObjCEncodingTypeSize(PType);
}

return S;
7871}

7873ObjCPropertyImplDecl *
7874ASTContext::getObjCPropertyImplDeclForPropertyDecl(
                                    const ObjCPropertyDecl *PD,
                                    const Decl *Container) const {
if (!Container)
  return nullptr;
if (const auto *CID = dyn_cast<ObjCCategoryImplDecl>(Container)) {
  for (auto *PID : CID->property_impls())
    if (PID->getPropertyDecl() == PD)
      return PID;
} else {
  const auto *OID = cast<ObjCImplementationDecl>(Container);
  for (auto *PID : OID->property_impls())
    if (PID->getPropertyDecl() == PD)
      return PID;
}
return nullptr;
7890}

7892/// getObjCEncodingForPropertyDecl - Return the encoded type for this
7893/// property declaration. If non-NULL, Container must be either an
7894/// ObjCCategoryImplDecl or ObjCImplementationDecl; it should only be
7895/// NULL when getting encodings for protocol properties.
7896/// Property attributes are stored as a comma-delimited C string. The simple
7897/// attributes readonly and bycopy are encoded as single characters. The
7898/// parametrized attributes, getter=name, setter=name, and ivar=name, are
7899/// encoded as single characters, followed by an identifier. Property types
7900/// are also encoded as a parametrized attribute. The characters used to encode
7901/// these attributes are defined by the following enumeration:
7902/// @code
7903/// enum PropertyAttributes {
7904/// kPropertyReadOnly = 'R',   // property is read-only.
7905/// kPropertyBycopy = 'C',     // property is a copy of the value last assigned
7906/// kPropertyByref = '&',  // property is a reference to the value last assigned
7907/// kPropertyDynamic = 'D',    // property is dynamic
7908/// kPropertyGetter = 'G',     // followed by getter selector name
7909/// kPropertySetter = 'S',     // followed by setter selector name
7910/// kPropertyInstanceVariable = 'V'  // followed by instance variable  name
7911/// kPropertyType = 'T'              // followed by old-style type encoding.
7912/// kPropertyWeak = 'W'              // 'weak' property
7913/// kPropertyStrong = 'P'            // property GC'able
7914/// kPropertyNonAtomic = 'N'         // property non-atomic
7915/// };
7916/// @endcode
7917std::string
7918ASTContext::getObjCEncodingForPropertyDecl(const ObjCPropertyDecl *PD,
                                         const Decl *Container) const {
// Collect information from the property implementation decl(s).
bool Dynamic = false;
ObjCPropertyImplDecl *SynthesizePID = nullptr;

if (ObjCPropertyImplDecl *PropertyImpDecl =
    getObjCPropertyImplDeclForPropertyDecl(PD, Container)) {
  if (PropertyImpDecl->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
    Dynamic = true;
  else
    SynthesizePID = PropertyImpDecl;
}

// FIXME: This is not very efficient.
std::string S = "T";

// Encode result type.
// GCC has some special rules regarding encoding of properties which
// closely resembles encoding of ivars.
getObjCEncodingForPropertyType(PD->getType(), S);

if (PD->isReadOnly()) {
  S += ",R";
  if (PD->getPropertyAttributes() & ObjCPropertyAttribute::kind_copy)
    S += ",C";
  if (PD->getPropertyAttributes() & ObjCPropertyAttribute::kind_retain)
    S += ",&";
  if (PD->getPropertyAttributes() & ObjCPropertyAttribute::kind_weak)
    S += ",W";
} else {
  switch (PD->getSetterKind()) {
  case ObjCPropertyDecl::Assign: break;
  case ObjCPropertyDecl::Copy:   S += ",C"; break;
  case ObjCPropertyDecl::Retain: S += ",&"; break;
  case ObjCPropertyDecl::Weak:   S += ",W"; break;
  }
}

// It really isn't clear at all what this means, since properties
// are "dynamic by default".
if (Dynamic)
  S += ",D";

if (PD->getPropertyAttributes() & ObjCPropertyAttribute::kind_nonatomic)
  S += ",N";

if (PD->getPropertyAttributes() & ObjCPropertyAttribute::kind_getter) {
  S += ",G";
  S += PD->getGetterName().getAsString();
}

if (PD->getPropertyAttributes() & ObjCPropertyAttribute::kind_setter) {
  S += ",S";
  S += PD->getSetterName().getAsString();
}

if (SynthesizePID) {
  const ObjCIvarDecl *OID = SynthesizePID->getPropertyIvarDecl();
  S += ",V";
  S += OID->getNameAsString();
}

// FIXME: OBJCGC: weak & strong
return S;
7983}

7985/// getLegacyIntegralTypeEncoding -
7986/// Another legacy compatibility encoding: 32-bit longs are encoded as
7987/// 'l' or 'L' , but not always.  For typedefs, we need to use
7988/// 'i' or 'I' instead if encoding a struct field, or a pointer!
7989void ASTContext::getLegacyIntegralTypeEncoding (QualType &PointeeTy) const {
if (PointeeTy->getAs<TypedefType>()) {
  if (const auto *BT = PointeeTy->getAs<BuiltinType>()) {
    if (BT->getKind() == BuiltinType::ULong && getIntWidth(PointeeTy) == 32)
      PointeeTy = UnsignedIntTy;
    else
      if (BT->getKind() == BuiltinType::Long && getIntWidth(PointeeTy) == 32)
        PointeeTy = IntTy;
  }
}
7999}

8001void ASTContext::getObjCEncodingForType(QualType T, std::string& S,
                                      const FieldDecl *Field,
                                      QualType *NotEncodedT) const {
// We follow the behavior of gcc, expanding structures which are
// directly pointed to, and expanding embedded structures. Note that
// these rules are sufficient to prevent recursive encoding of the
// same type.
getObjCEncodingForTypeImpl(T, S,
                           ObjCEncOptions()
                               .setExpandPointedToStructures()
                               .setExpandStructures()
                               .setIsOutermostType(),
                           Field, NotEncodedT);
8014}

8016void ASTContext::getObjCEncodingForPropertyType(QualType T,
                                              std::string& S) const {
// Encode result type.
// GCC has some special rules regarding encoding of properties which
// closely resembles encoding of ivars.
getObjCEncodingForTypeImpl(T, S,
                           ObjCEncOptions()
                               .setExpandPointedToStructures()
                               .setExpandStructures()
                               .setIsOutermostType()
                               .setEncodingProperty(),
                           /*Field=*/nullptr);
8028}

8030static char getObjCEncodingForPrimitiveType(const ASTContext *C,
                                          const BuiltinType *BT) {
  BuiltinType::Kind kind = BT->getKind();
  switch (kind) {
  case BuiltinType::Void:       return 'v';
  case BuiltinType::Bool:       return 'B';
  case BuiltinType::Char8:
  case BuiltinType::Char_U:
  case BuiltinType::UChar:      return 'C';
  case BuiltinType::Char16:
  case BuiltinType::UShort:     return 'S';
  case BuiltinType::Char32:
  case BuiltinType::UInt:       return 'I';
  case BuiltinType::ULong:
      return C->getTargetInfo().getLongWidth() == 32 ? 'L' : 'Q';
  case BuiltinType::UInt128:    return 'T';
  case BuiltinType::ULongLong:  return 'Q';
  case BuiltinType::Char_S:
  case BuiltinType::SChar:      return 'c';
  case BuiltinType::Short:      return 's';
  case BuiltinType::WChar_S:
  case BuiltinType::WChar_U:
  case BuiltinType::Int:        return 'i';
  case BuiltinType::Long:
    return C->getTargetInfo().getLongWidth() == 32 ? 'l' : 'q';
  case BuiltinType::LongLong:   return 'q';
  case BuiltinType::Int128:     return 't';
  case BuiltinType::Float:      return 'f';
  case BuiltinType::Double:     return 'd';
  case BuiltinType::LongDouble: return 'D';
  case BuiltinType::NullPtr:    return '*'; // like char*

  case BuiltinType::BFloat16:
  case BuiltinType::Float16:
  case BuiltinType::Float128:
  case BuiltinType::Ibm128:
  case BuiltinType::Half:
  case BuiltinType::ShortAccum:
  case BuiltinType::Accum:
  case BuiltinType::LongAccum:
  case BuiltinType::UShortAccum:
  case BuiltinType::UAccum:
  case BuiltinType::ULongAccum:
  case BuiltinType::ShortFract:
  case BuiltinType::Fract:
  case BuiltinType::LongFract:
  case BuiltinType::UShortFract:
  case BuiltinType::UFract:
  case BuiltinType::ULongFract:
  case BuiltinType::SatShortAccum:
  case BuiltinType::SatAccum:
  case BuiltinType::SatLongAccum:
  case BuiltinType::SatUShortAccum:
  case BuiltinType::SatUAccum:
  case BuiltinType::SatULongAccum:
  case BuiltinType::SatShortFract:
  case BuiltinType::SatFract:
  case BuiltinType::SatLongFract:
  case BuiltinType::SatUShortFract:
  case BuiltinType::SatUFract:
  case BuiltinType::SatULongFract:
    // FIXME: potentially need @encodes for these!
    return ' ';

8094#define SVE_TYPE(Name, Id, SingletonId) \
  case BuiltinType::Id:
8096#include "clang/Basic/AArch64SVEACLETypes.def"
8097#define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
8098#include "clang/Basic/RISCVVTypes.def"
8099#define WASM_TYPE(Name, Id, SingletonId) case BuiltinType::Id:
8100#include "clang/Basic/WebAssemblyReferenceTypes.def"
    {
      DiagnosticsEngine &Diags = C->getDiagnostics();
      unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
                                              "cannot yet @encode type %0");
      Diags.Report(DiagID) << BT->getName(C->getPrintingPolicy());
      return ' ';
    }

  case BuiltinType::ObjCId:
  case BuiltinType::ObjCClass:
  case BuiltinType::ObjCSel:
    llvm_unreachable("@encoding ObjC primitive type")::llvm::llvm_unreachable_internal("@encoding ObjC primitive type"
, "clang/lib/AST/ASTContext.cpp", 8112);

  // OpenCL and placeholder types don't need @encodings.
8115#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
  case BuiltinType::Id:
8117#include "clang/Basic/OpenCLImageTypes.def"
8118#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
  case BuiltinType::Id:
8120#include "clang/Basic/OpenCLExtensionTypes.def"
  case BuiltinType::OCLEvent:
  case BuiltinType::OCLClkEvent:
  case BuiltinType::OCLQueue:
  case BuiltinType::OCLReserveID:
  case BuiltinType::OCLSampler:
  case BuiltinType::Dependent:
8127#define PPC_VECTOR_TYPE(Name, Id, Size) \
  case BuiltinType::Id:
8129#include "clang/Basic/PPCTypes.def"
8130#define BUILTIN_TYPE(KIND, ID)
8131#define PLACEHOLDER_TYPE(KIND, ID) \
  case BuiltinType::KIND:
8133#include "clang/AST/BuiltinTypes.def"
    llvm_unreachable("invalid builtin type for @encode")::llvm::llvm_unreachable_internal("invalid builtin type for @encode"
, "clang/lib/AST/ASTContext.cpp", 8134);
  }
  llvm_unreachable("invalid BuiltinType::Kind value")::llvm::llvm_unreachable_internal("invalid BuiltinType::Kind value"
, "clang/lib/AST/ASTContext.cpp", 8136);
8137}

8139static char ObjCEncodingForEnumType(const ASTContext *C, const EnumType *ET) {
EnumDecl *Enum = ET->getDecl();

// The encoding of an non-fixed enum type is always 'i', regardless of size.
if (!Enum->isFixed())
  return 'i';

// The encoding of a fixed enum type matches its fixed underlying type.
const auto *BT = Enum->getIntegerType()->castAs<BuiltinType>();
return getObjCEncodingForPrimitiveType(C, BT);
8149}

8151static void EncodeBitField(const ASTContext *Ctx, std::string& S,
                         QualType T, const FieldDecl *FD) {
assert(FD->isBitField() && "not a bitfield - getObjCEncodingForTypeImpl")(static_cast <bool> (FD->isBitField() && "not a bitfield - getObjCEncodingForTypeImpl"
) ? void (0) : __assert_fail ("FD->isBitField() && \"not a bitfield - getObjCEncodingForTypeImpl\""
, "clang/lib/AST/ASTContext.cpp", 8153, __extension__ __PRETTY_FUNCTION__
));
S += 'b';
// The NeXT runtime encodes bit fields as b followed by the number of bits.
// The GNU runtime requires more information; bitfields are encoded as b,
// then the offset (in bits) of the first element, then the type of the
// bitfield, then the size in bits.  For example, in this structure:
//
// struct
// {
//    int integer;
//    int flags:2;
// };
// On a 32-bit system, the encoding for flags would be b2 for the NeXT
// runtime, but b32i2 for the GNU runtime.  The reason for this extra
// information is not especially sensible, but we're stuck with it for
// compatibility with GCC, although providing it breaks anything that
// actually uses runtime introspection and wants to work on both runtimes...
if (Ctx->getLangOpts().ObjCRuntime.isGNUFamily()) {
  uint64_t Offset;

  if (const auto *IVD = dyn_cast<ObjCIvarDecl>(FD)) {
    Offset = Ctx->lookupFieldBitOffset(IVD->getContainingInterface(), nullptr,
                                       IVD);
  } else {
    const RecordDecl *RD = FD->getParent();
    const ASTRecordLayout &RL = Ctx->getASTRecordLayout(RD);
    Offset = RL.getFieldOffset(FD->getFieldIndex());
  }

  S += llvm::utostr(Offset);

  if (const auto *ET = T->getAs<EnumType>())
    S += ObjCEncodingForEnumType(Ctx, ET);
  else {
    const auto *BT = T->castAs<BuiltinType>();
    S += getObjCEncodingForPrimitiveType(Ctx, BT);
  }
}
S += llvm::utostr(FD->getBitWidthValue(*Ctx));
8192}

8194// Helper function for determining whether the encoded type string would include
8195// a template specialization type.
8196static bool hasTemplateSpecializationInEncodedString(const Type *T,
                                                   bool VisitBasesAndFields) {
T = T->getBaseElementTypeUnsafe();

if (auto *PT = T->getAs<PointerType>())
  return hasTemplateSpecializationInEncodedString(
      PT->getPointeeType().getTypePtr(), false);

auto *CXXRD = T->getAsCXXRecordDecl();

if (!CXXRD)
  return false;

if (isa<ClassTemplateSpecializationDecl>(CXXRD))
  return true;

if (!CXXRD->hasDefinition() || !VisitBasesAndFields)
  return false;

for (const auto &B : CXXRD->bases())
  if (hasTemplateSpecializationInEncodedString(B.getType().getTypePtr(),
                                               true))
    return true;

for (auto *FD : CXXRD->fields())
  if (hasTemplateSpecializationInEncodedString(FD->getType().getTypePtr(),
                                               true))
    return true;

return false;
8226}

8228// FIXME: Use SmallString for accumulating string.
8229void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string &S,
                                          const ObjCEncOptions Options,
                                          const FieldDecl *FD,
                                          QualType *NotEncodedT) const {
CanQualType CT = getCanonicalType(T);
switch (CT->getTypeClass()) {
case Type::Builtin:
case Type::Enum:
  if (FD && FD->isBitField())
    return EncodeBitField(this, S, T, FD);
  if (const auto *BT = dyn_cast<BuiltinType>(CT))
    S += getObjCEncodingForPrimitiveType(this, BT);
  else
    S += ObjCEncodingForEnumType(this, cast<EnumType>(CT));
  return;

case Type::Complex:
  S += 'j';
  getObjCEncodingForTypeImpl(T->castAs<ComplexType>()->getElementType(), S,
                             ObjCEncOptions(),
                             /*Field=*/nullptr);
  return;

case Type::Atomic:
  S += 'A';
  getObjCEncodingForTypeImpl(T->castAs<AtomicType>()->getValueType(), S,
                             ObjCEncOptions(),
                             /*Field=*/nullptr);
  return;

// encoding for pointer or reference types.
case Type::Pointer:
case Type::LValueReference:
case Type::RValueReference: {
  QualType PointeeTy;
  if (isa<PointerType>(CT)) {
    const auto *PT = T->castAs<PointerType>();
    if (PT->isObjCSelType()) {
      S += ':';
      return;
    }
    PointeeTy = PT->getPointeeType();
  } else {
    PointeeTy = T->castAs<ReferenceType>()->getPointeeType();
  }

  bool isReadOnly = false;
  // For historical/compatibility reasons, the read-only qualifier of the
  // pointee gets emitted _before_ the '^'.  The read-only qualifier of
  // the pointer itself gets ignored, _unless_ we are looking at a typedef!
  // Also, do not emit the 'r' for anything but the outermost type!
  if (T->getAs<TypedefType>()) {
    if (Options.IsOutermostType() && T.isConstQualified()) {
      isReadOnly = true;
      S += 'r';
    }
  } else if (Options.IsOutermostType()) {
    QualType P = PointeeTy;
    while (auto PT = P->getAs<PointerType>())
      P = PT->getPointeeType();
    if (P.isConstQualified()) {
      isReadOnly = true;
      S += 'r';
    }
  }
  if (isReadOnly) {
    // Another legacy compatibility encoding. Some ObjC qualifier and type
    // combinations need to be rearranged.
    // Rewrite "in const" from "nr" to "rn"
    if (StringRef(S).endswith("nr"))
      S.replace(S.end()-2, S.end(), "rn");
  }

  if (PointeeTy->isCharType()) {
    // char pointer types should be encoded as '*' unless it is a
    // type that has been typedef'd to 'BOOL'.
    if (!isTypeTypedefedAsBOOL(PointeeTy)) {
      S += '*';
      return;
    }
  } else if (const auto *RTy = PointeeTy->getAs<RecordType>()) {
    // GCC binary compat: Need to convert "struct objc_class *" to "#".
    if (RTy->getDecl()->getIdentifier() == &Idents.get("objc_class")) {
      S += '#';
      return;
    }
    // GCC binary compat: Need to convert "struct objc_object *" to "@".
    if (RTy->getDecl()->getIdentifier() == &Idents.get("objc_object")) {
      S += '@';
      return;
    }
    // If the encoded string for the class includes template names, just emit
    // "^v" for pointers to the class.
    if (getLangOpts().CPlusPlus &&
        (!getLangOpts().EncodeCXXClassTemplateSpec &&
         hasTemplateSpecializationInEncodedString(
             RTy, Options.ExpandPointedToStructures()))) {
      S += "^v";
      return;
    }
    // fall through...
  }
  S += '^';
  getLegacyIntegralTypeEncoding(PointeeTy);

  ObjCEncOptions NewOptions;
  if (Options.ExpandPointedToStructures())
    NewOptions.setExpandStructures();
  getObjCEncodingForTypeImpl(PointeeTy, S, NewOptions,
                             /*Field=*/nullptr, NotEncodedT);
  return;
}

case Type::ConstantArray:
case Type::IncompleteArray:
case Type::VariableArray: {
  const auto *AT = cast<ArrayType>(CT);

  if (isa<IncompleteArrayType>(AT) && !Options.IsStructField()) {
    // Incomplete arrays are encoded as a pointer to the array element.
    S += '^';

    getObjCEncodingForTypeImpl(
        AT->getElementType(), S,
        Options.keepingOnly(ObjCEncOptions().setExpandStructures()), FD);
  } else {
    S += '[';

    if (const auto *CAT = dyn_cast<ConstantArrayType>(AT))
      S += llvm::utostr(CAT->getSize().getZExtValue());
    else {
      //Variable length arrays are encoded as a regular array with 0 elements.
      assert((isa<VariableArrayType>(AT) || isa<IncompleteArrayType>(AT)) &&(static_cast <bool> ((isa<VariableArrayType>(AT) ||
 isa<IncompleteArrayType>(AT)) && "Unknown array type!"
) ? void (0) : __assert_fail ("(isa<VariableArrayType>(AT) || isa<IncompleteArrayType>(AT)) && \"Unknown array type!\""
, "clang/lib/AST/ASTContext.cpp", 8362, __extension__ __PRETTY_FUNCTION__
))
             "Unknown array type!")(static_cast <bool> ((isa<VariableArrayType>(AT) ||
 isa<IncompleteArrayType>(AT)) && "Unknown array type!"
) ? void (0) : __assert_fail ("(isa<VariableArrayType>(AT) || isa<IncompleteArrayType>(AT)) && \"Unknown array type!\""
, "clang/lib/AST/ASTContext.cpp", 8362, __extension__ __PRETTY_FUNCTION__
));
      S += '0';
    }

    getObjCEncodingForTypeImpl(
        AT->getElementType(), S,
        Options.keepingOnly(ObjCEncOptions().setExpandStructures()), FD,
        NotEncodedT);
    S += ']';
  }
  return;
}

case Type::FunctionNoProto:
case Type::FunctionProto:
  S += '?';
  return;

case Type::Record: {
  RecordDecl *RDecl = cast<RecordType>(CT)->getDecl();
  S += RDecl->isUnion() ? '(' : '{';
  // Anonymous structures print as '?'
  if (const IdentifierInfo *II = RDecl->getIdentifier()) {
    S += II->getName();
    if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(RDecl)) {
      const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs();
      llvm::raw_string_ostream OS(S);
      printTemplateArgumentList(OS, TemplateArgs.asArray(),
                                getPrintingPolicy());
    }
  } else {
    S += '?';
  }
  if (Options.ExpandStructures()) {
    S += '=';
    if (!RDecl->isUnion()) {
      getObjCEncodingForStructureImpl(RDecl, S, FD, true, NotEncodedT);
    } else {
      for (const auto *Field : RDecl->fields()) {
        if (FD) {
          S += '"';
          S += Field->getNameAsString();
          S += '"';
        }

        // Special case bit-fields.
        if (Field->isBitField()) {
          getObjCEncodingForTypeImpl(Field->getType(), S,
                                     ObjCEncOptions().setExpandStructures(),
                                     Field);
        } else {
          QualType qt = Field->getType();
          getLegacyIntegralTypeEncoding(qt);
          getObjCEncodingForTypeImpl(
              qt, S,
              ObjCEncOptions().setExpandStructures().setIsStructField(), FD,
              NotEncodedT);
        }
      }
    }
  }
  S += RDecl->isUnion() ? ')' : '}';
  return;
}

case Type::BlockPointer: {
  const auto *BT = T->castAs<BlockPointerType>();
  S += "@?"; // Unlike a pointer-to-function, which is "^?".
  if (Options.EncodeBlockParameters()) {
    const auto *FT = BT->getPointeeType()->castAs<FunctionType>();

    S += '<';
    // Block return type
    getObjCEncodingForTypeImpl(FT->getReturnType(), S,
                               Options.forComponentType(), FD, NotEncodedT);
    // Block self
    S += "@?";
    // Block parameters
    if (const auto *FPT = dyn_cast<FunctionProtoType>(FT)) {
      for (const auto &I : FPT->param_types())
        getObjCEncodingForTypeImpl(I, S, Options.forComponentType(), FD,
                                   NotEncodedT);
    }
    S += '>';
  }
  return;
}

case Type::ObjCObject: {
  // hack to match legacy encoding of *id and *Class
  QualType Ty = getObjCObjectPointerType(CT);
  if (Ty->isObjCIdType()) {
    S += "{objc_object=}";
    return;
  }
  else if (Ty->isObjCClassType()) {
    S += "{objc_class=}";
    return;
  }
  // TODO: Double check to make sure this intentionally falls through.
  [[fallthrough]];
}

case Type::ObjCInterface: {
  // Ignore protocol qualifiers when mangling at this level.
  // @encode(class_name)
  ObjCInterfaceDecl *OI = T->castAs<ObjCObjectType>()->getInterface();
  S += '{';
  S += OI->getObjCRuntimeNameAsString();
  if (Options.ExpandStructures()) {
    S += '=';
    SmallVector<const ObjCIvarDecl*, 32> Ivars;
    DeepCollectObjCIvars(OI, true, Ivars);
    for (unsigned i = 0, e = Ivars.size(); i != e; ++i) {
      const FieldDecl *Field = Ivars[i];
      if (Field->isBitField())
        getObjCEncodingForTypeImpl(Field->getType(), S,
                                   ObjCEncOptions().setExpandStructures(),
                                   Field);
      else
        getObjCEncodingForTypeImpl(Field->getType(), S,
                                   ObjCEncOptions().setExpandStructures(), FD,
                                   NotEncodedT);
    }
  }
  S += '}';
  return;
}

case Type::ObjCObjectPointer: {
  const auto *OPT = T->castAs<ObjCObjectPointerType>();
  if (OPT->isObjCIdType()) {
    S += '@';
    return;
  }

  if (OPT->isObjCClassType() || OPT->isObjCQualifiedClassType()) {
    // FIXME: Consider if we need to output qualifiers for 'Class<p>'.
    // Since this is a binary compatibility issue, need to consult with
    // runtime folks. Fortunately, this is a *very* obscure construct.
    S += '#';
    return;
  }

  if (OPT->isObjCQualifiedIdType()) {
    getObjCEncodingForTypeImpl(
        getObjCIdType(), S,
        Options.keepingOnly(ObjCEncOptions()
                                .setExpandPointedToStructures()
                                .setExpandStructures()),
        FD);
    if (FD || Options.EncodingProperty() || Options.EncodeClassNames()) {
      // Note that we do extended encoding of protocol qualifier list
      // Only when doing ivar or property encoding.
      S += '"';
      for (const auto *I : OPT->quals()) {
        S += '<';
        S += I->getObjCRuntimeNameAsString();
        S += '>';
      }
      S += '"';
    }
    return;
  }

  S += '@';
  if (OPT->getInterfaceDecl() &&
      (FD || Options.EncodingProperty() || Options.EncodeClassNames())) {
    S += '"';
    S += OPT->getInterfaceDecl()->getObjCRuntimeNameAsString();
    for (const auto *I : OPT->quals()) {
      S += '<';
      S += I->getObjCRuntimeNameAsString();
      S += '>';
    }
    S += '"';
  }
  return;
}

// gcc just blithely ignores member pointers.
// FIXME: we should do better than that.  'M' is available.
case Type::MemberPointer:
// This matches gcc's encoding, even though technically it is insufficient.
//FIXME. We should do a better job than gcc.
case Type::Vector:
case Type::ExtVector:
// Until we have a coherent encoding of these three types, issue warning.
  if (NotEncodedT)
    *NotEncodedT = T;
  return;

case Type::ConstantMatrix:
  if (NotEncodedT)
    *NotEncodedT = T;
  return;

case Type::BitInt:
  if (NotEncodedT)
    *NotEncodedT = T;
  return;

// We could see an undeduced auto type here during error recovery.
// Just ignore it.
case Type::Auto:
case Type::DeducedTemplateSpecialization:
  return;

case Type::Pipe:
8571#define ABSTRACT_TYPE(KIND, BASE)
8572#define TYPE(KIND, BASE)
8573#define DEPENDENT_TYPE(KIND, BASE) \
case Type::KIND:
8575#define NON_CANONICAL_TYPE(KIND, BASE) \
case Type::KIND:
8577#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(KIND, BASE) \
case Type::KIND:
8579#include "clang/AST/TypeNodes.inc"
  llvm_unreachable("@encode for dependent type!")::llvm::llvm_unreachable_internal("@encode for dependent type!"
, "clang/lib/AST/ASTContext.cpp", 8580);
}
llvm_unreachable("bad type kind!")::llvm::llvm_unreachable_internal("bad type kind!", "clang/lib/AST/ASTContext.cpp"
, 8582);
8583}

8585void ASTContext::getObjCEncodingForStructureImpl(RecordDecl *RDecl,
                                               std::string &S,
                                               const FieldDecl *FD,
                                               bool includeVBases,
                                               QualType *NotEncodedT) const {
assert(RDecl && "Expected non-null RecordDecl")(static_cast <bool> (RDecl && "Expected non-null RecordDecl"
) ? void (0) : __assert_fail ("RDecl && \"Expected non-null RecordDecl\""
, "clang/lib/AST/ASTContext.cpp", 8590, __extension__ __PRETTY_FUNCTION__
));
assert(!RDecl->isUnion() && "Should not be called for unions")(static_cast <bool> (!RDecl->isUnion() && "Should not be called for unions"
) ? void (0) : __assert_fail ("!RDecl->isUnion() && \"Should not be called for unions\""
, "clang/lib/AST/ASTContext.cpp", 8591, __extension__ __PRETTY_FUNCTION__
));
if (!RDecl->getDefinition() || RDecl->getDefinition()->isInvalidDecl())
  return;

const auto *CXXRec = dyn_cast<CXXRecordDecl>(RDecl);
std::multimap<uint64_t, NamedDecl *> FieldOrBaseOffsets;
const ASTRecordLayout &layout = getASTRecordLayout(RDecl);

if (CXXRec) {
  for (const auto &BI : CXXRec->bases()) {
    if (!BI.isVirtual()) {
      CXXRecordDecl *base = BI.getType()->getAsCXXRecordDecl();
      if (base->isEmpty())
        continue;
      uint64_t offs = toBits(layout.getBaseClassOffset(base));
      FieldOrBaseOffsets.insert(FieldOrBaseOffsets.upper_bound(offs),
                                std::make_pair(offs, base));
    }
  }
}

unsigned i = 0;
for (FieldDecl *Field : RDecl->fields()) {
  if (!Field->isZeroLengthBitField(*this) && Field->isZeroSize(*this))
    continue;
  uint64_t offs = layout.getFieldOffset(i);
  FieldOrBaseOffsets.insert(FieldOrBaseOffsets.upper_bound(offs),
                            std::make_pair(offs, Field));
  ++i;
}

if (CXXRec && includeVBases) {
  for (const auto &BI : CXXRec->vbases()) {
    CXXRecordDecl *base = BI.getType()->getAsCXXRecordDecl();
    if (base->isEmpty())
      continue;
    uint64_t offs = toBits(layout.getVBaseClassOffset(base));
    if (offs >= uint64_t(toBits(layout.getNonVirtualSize())) &&
        FieldOrBaseOffsets.find(offs) == FieldOrBaseOffsets.end())
      FieldOrBaseOffsets.insert(FieldOrBaseOffsets.end(),
                                std::make_pair(offs, base));
  }
}

CharUnits size;
if (CXXRec) {
  size = includeVBases ? layout.getSize() : layout.getNonVirtualSize();
} else {
  size = layout.getSize();
}

8642#ifndef NDEBUG
uint64_t CurOffs = 0;
8644#endif
std::multimap<uint64_t, NamedDecl *>::iterator
  CurLayObj = FieldOrBaseOffsets.begin();

if (CXXRec && CXXRec->isDynamicClass() &&
    (CurLayObj == FieldOrBaseOffsets.end() || CurLayObj->first != 0)) {
  if (FD) {
    S += "\"_vptr$";
    std::string recname = CXXRec->getNameAsString();
    if (recname.empty()) recname = "?";
    S += recname;
    S += '"';
  }
  S += "^^?";
8658#ifndef NDEBUG
  CurOffs += getTypeSize(VoidPtrTy);
8660#endif
}

if (!RDecl->hasFlexibleArrayMember()) {
  // Mark the end of the structure.
  uint64_t offs = toBits(size);
  FieldOrBaseOffsets.insert(FieldOrBaseOffsets.upper_bound(offs),
                            std::make_pair(offs, nullptr));
}

for (; CurLayObj != FieldOrBaseOffsets.end(); ++CurLayObj) {
8671#ifndef NDEBUG
  assert(CurOffs <= CurLayObj->first)(static_cast <bool> (CurOffs <= CurLayObj->first)
 ? void (0) : __assert_fail ("CurOffs <= CurLayObj->first"
, "clang/lib/AST/ASTContext.cpp", 8672, __extension__ __PRETTY_FUNCTION__
));
  if (CurOffs < CurLayObj->first) {
    uint64_t padding = CurLayObj->first - CurOffs;
    // FIXME: There doesn't seem to be a way to indicate in the encoding that
    // packing/alignment of members is different that normal, in which case
    // the encoding will be out-of-sync with the real layout.
    // If the runtime switches to just consider the size of types without
    // taking into account alignment, we could make padding explicit in the
    // encoding (e.g. using arrays of chars). The encoding strings would be
    // longer then though.
    CurOffs += padding;
  }
8684#endif

  NamedDecl *dcl = CurLayObj->second;
  if (!dcl)
    break; // reached end of structure.

  if (auto *base = dyn_cast<CXXRecordDecl>(dcl)) {
    // We expand the bases without their virtual bases since those are going
    // in the initial structure. Note that this differs from gcc which
    // expands virtual bases each time one is encountered in the hierarchy,
    // making the encoding type bigger than it really is.
    getObjCEncodingForStructureImpl(base, S, FD, /*includeVBases*/false,
                                    NotEncodedT);
    assert(!base->isEmpty())(static_cast <bool> (!base->isEmpty()) ? void (0) : __assert_fail
 ("!base->isEmpty()", "clang/lib/AST/ASTContext.cpp", 8697
, __extension__ __PRETTY_FUNCTION__));
8698#ifndef NDEBUG
    CurOffs += toBits(getASTRecordLayout(base).getNonVirtualSize());
8700#endif
  } else {
    const auto *field = cast<FieldDecl>(dcl);
    if (FD) {
      S += '"';
      S += field->getNameAsString();
      S += '"';
    }

    if (field->isBitField()) {
      EncodeBitField(this, S, field->getType(), field);
8711#ifndef NDEBUG
      CurOffs += field->getBitWidthValue(*this);
8713#endif
    } else {
      QualType qt = field->getType();
      getLegacyIntegralTypeEncoding(qt);
      getObjCEncodingForTypeImpl(
          qt, S, ObjCEncOptions().setExpandStructures().setIsStructField(),
          FD, NotEncodedT);
8720#ifndef NDEBUG
      CurOffs += getTypeSize(field->getType());
8722#endif
    }
  }
}
8726}

8728void ASTContext::getObjCEncodingForTypeQualifier(Decl::ObjCDeclQualifier QT,
                                               std::string& S) const {
if (QT & Decl::OBJC_TQ_In)
  S += 'n';
if (QT & Decl::OBJC_TQ_Inout)
  S += 'N';
if (QT & Decl::OBJC_TQ_Out)
  S += 'o';
if (QT & Decl::OBJC_TQ_Bycopy)
  S += 'O';
if (QT & Decl::OBJC_TQ_Byref)
  S += 'R';
if (QT & Decl::OBJC_TQ_Oneway)
  S += 'V';
8742}

8744TypedefDecl *ASTContext::getObjCIdDecl() const {
if (!ObjCIdDecl) {
  QualType T = getObjCObjectType(ObjCBuiltinIdTy, {}, {});
  T = getObjCObjectPointerType(T);
  ObjCIdDecl = buildImplicitTypedef(T, "id");
}
return ObjCIdDecl;
8751}

8753TypedefDecl *ASTContext::getObjCSelDecl() const {
if (!ObjCSelDecl) {
  QualType T = getPointerType(ObjCBuiltinSelTy);
  ObjCSelDecl = buildImplicitTypedef(T, "SEL");
}
return ObjCSelDecl;
8759}

8761TypedefDecl *ASTContext::getObjCClassDecl() const {
if (!ObjCClassDecl) {
  QualType T = getObjCObjectType(ObjCBuiltinClassTy, {}, {});
  T = getObjCObjectPointerType(T);
  ObjCClassDecl = buildImplicitTypedef(T, "Class");
}
return ObjCClassDecl;
8768}

8770ObjCInterfaceDecl *ASTContext::getObjCProtocolDecl() const {
if (!ObjCProtocolClassDecl) {
  ObjCProtocolClassDecl
    = ObjCInterfaceDecl::Create(*this, getTranslationUnitDecl(),
                                SourceLocation(),
                                &Idents.get("Protocol"),
                                /*typeParamList=*/nullptr,
                                /*PrevDecl=*/nullptr,
                                SourceLocation(), true);
}

return ObjCProtocolClassDecl;
8782}

8784//===----------------------------------------------------------------------===//
8785// __builtin_va_list Construction Functions
8786//===----------------------------------------------------------------------===//

8788static TypedefDecl *CreateCharPtrNamedVaListDecl(const ASTContext *Context,
                                               StringRef Name) {
// typedef char* __builtin[_ms]_va_list;
QualType T = Context->getPointerType(Context->CharTy);
return Context->buildImplicitTypedef(T, Name);
8793}

8795static TypedefDecl *CreateMSVaListDecl(const ASTContext *Context) {
return CreateCharPtrNamedVaListDecl(Context, "__builtin_ms_va_list");
8797}

8799static TypedefDecl *CreateCharPtrBuiltinVaListDecl(const ASTContext *Context) {
return CreateCharPtrNamedVaListDecl(Context, "__builtin_va_list");
8801}

8803static TypedefDecl *CreateVoidPtrBuiltinVaListDecl(const ASTContext *Context) {
// typedef void* __builtin_va_list;
QualType T = Context->getPointerType(Context->VoidTy);
return Context->buildImplicitTypedef(T, "__builtin_va_list");
8807}

8809static TypedefDecl *
8810CreateAArch64ABIBuiltinVaListDecl(const ASTContext *Context) {
// struct __va_list
RecordDecl *VaListTagDecl = Context->buildImplicitRecord("__va_list");
if (Context->getLangOpts().CPlusPlus) {
  // namespace std { struct __va_list {
  auto *NS = NamespaceDecl::Create(
      const_cast<ASTContext &>(*Context), Context->getTranslationUnitDecl(),
      /*Inline=*/false, SourceLocation(), SourceLocation(),
      &Context->Idents.get("std"),
      /*PrevDecl=*/nullptr, /*Nested=*/false);
  NS->setImplicit();
  VaListTagDecl->setDeclContext(NS);
}

VaListTagDecl->startDefinition();

const size_t NumFields = 5;
QualType FieldTypes[NumFields];
const char *FieldNames[NumFields];

// void *__stack;
FieldTypes[0] = Context->getPointerType(Context->VoidTy);
FieldNames[0] = "__stack";

// void *__gr_top;
FieldTypes[1] = Context->getPointerType(Context->VoidTy);
FieldNames[1] = "__gr_top";

// void *__vr_top;
FieldTypes[2] = Context->getPointerType(Context->VoidTy);
FieldNames[2] = "__vr_top";

// int __gr_offs;
FieldTypes[3] = Context->IntTy;
FieldNames[3] = "__gr_offs";

// int __vr_offs;
FieldTypes[4] = Context->IntTy;
FieldNames[4] = "__vr_offs";

// Create fields
for (unsigned i = 0; i < NumFields; ++i) {
  FieldDecl *Field = FieldDecl::Create(const_cast<ASTContext &>(*Context),
                                       VaListTagDecl,
                                       SourceLocation(),
                                       SourceLocation(),
                                       &Context->Idents.get(FieldNames[i]),
                                       FieldTypes[i], /*TInfo=*/nullptr,
                                       /*BitWidth=*/nullptr,
                                       /*Mutable=*/false,
                                       ICIS_NoInit);
  Field->setAccess(AS_public);
  VaListTagDecl->addDecl(Field);
}
VaListTagDecl->completeDefinition();
Context->VaListTagDecl = VaListTagDecl;
QualType VaListTagType = Context->getRecordType(VaListTagDecl);

// } __builtin_va_list;
return Context->buildImplicitTypedef(VaListTagType, "__builtin_va_list");
8870}

8872static TypedefDecl *CreatePowerABIBuiltinVaListDecl(const ASTContext *Context) {
// typedef struct __va_list_tag {
RecordDecl *VaListTagDecl;

VaListTagDecl = Context->buildImplicitRecord("__va_list_tag");
VaListTagDecl->startDefinition();

const size_t NumFields = 5;
QualType FieldTypes[NumFields];
const char *FieldNames[NumFields];

//   unsigned char gpr;
FieldTypes[0] = Context->UnsignedCharTy;
FieldNames[0] = "gpr";

//   unsigned char fpr;
FieldTypes[1] = Context->UnsignedCharTy;
FieldNames[1] = "fpr";

//   unsigned short reserved;
FieldTypes[2] = Context->UnsignedShortTy;
FieldNames[2] = "reserved";

//   void* overflow_arg_area;
FieldTypes[3] = Context->getPointerType(Context->VoidTy);
FieldNames[3] = "overflow_arg_area";

//   void* reg_save_area;
FieldTypes[4] = Context->getPointerType(Context->VoidTy);
FieldNames[4] = "reg_save_area";

// Create fields
for (unsigned i = 0; i < NumFields; ++i) {
  FieldDecl *Field = FieldDecl::Create(*Context, VaListTagDecl,
                                       SourceLocation(),
                                       SourceLocation(),
                                       &Context->Idents.get(FieldNames[i]),
                                       FieldTypes[i], /*TInfo=*/nullptr,
                                       /*BitWidth=*/nullptr,
                                       /*Mutable=*/false,
                                       ICIS_NoInit);
  Field->setAccess(AS_public);
  VaListTagDecl->addDecl(Field);
}
VaListTagDecl->completeDefinition();
Context->VaListTagDecl = VaListTagDecl;
QualType VaListTagType = Context->getRecordType(VaListTagDecl);

// } __va_list_tag;
TypedefDecl *VaListTagTypedefDecl =
    Context->buildImplicitTypedef(VaListTagType, "__va_list_tag");

QualType VaListTagTypedefType =
  Context->getTypedefType(VaListTagTypedefDecl);

// typedef __va_list_tag __builtin_va_list[1];
llvm::APInt Size(Context->getTypeSize(Context->getSizeType()), 1);
QualType VaListTagArrayType
  = Context->getConstantArrayType(VaListTagTypedefType,
                                  Size, nullptr, ArrayType::Normal, 0);
return Context->buildImplicitTypedef(VaListTagArrayType, "__builtin_va_list");
8933}

8935static TypedefDecl *
8936CreateX86_64ABIBuiltinVaListDecl(const ASTContext *Context) {
// struct __va_list_tag {
RecordDecl *VaListTagDecl;
VaListTagDecl = Context->buildImplicitRecord("__va_list_tag");
VaListTagDecl->startDefinition();

const size_t NumFields = 4;
QualType FieldTypes[NumFields];
const char *FieldNames[NumFields];

//   unsigned gp_offset;
FieldTypes[0] = Context->UnsignedIntTy;
FieldNames[0] = "gp_offset";

//   unsigned fp_offset;
FieldTypes[1] = Context->UnsignedIntTy;
FieldNames[1] = "fp_offset";

//   void* overflow_arg_area;
FieldTypes[2] = Context->getPointerType(Context->VoidTy);
FieldNames[2] = "overflow_arg_area";

//   void* reg_save_area;
FieldTypes[3] = Context->getPointerType(Context->VoidTy);
FieldNames[3] = "reg_save_area";

// Create fields
for (unsigned i = 0; i < NumFields; ++i) {
  FieldDecl *Field = FieldDecl::Create(const_cast<ASTContext &>(*Context),
                                       VaListTagDecl,
                                       SourceLocation(),
                                       SourceLocation(),
                                       &Context->Idents.get(FieldNames[i]),
                                       FieldTypes[i], /*TInfo=*/nullptr,
                                       /*BitWidth=*/nullptr,
                                       /*Mutable=*/false,
                                       ICIS_NoInit);
  Field->setAccess(AS_public);
  VaListTagDecl->addDecl(Field);
}
VaListTagDecl->completeDefinition();
Context->VaListTagDecl = VaListTagDecl;
QualType VaListTagType = Context->getRecordType(VaListTagDecl);

// };

// typedef struct __va_list_tag __builtin_va_list[1];
llvm::APInt Size(Context->getTypeSize(Context->getSizeType()), 1);
QualType VaListTagArrayType = Context->getConstantArrayType(
    VaListTagType, Size, nullptr, ArrayType::Normal, 0);
return Context->buildImplicitTypedef(VaListTagArrayType, "__builtin_va_list");
8987}

8989static TypedefDecl *CreatePNaClABIBuiltinVaListDecl(const ASTContext *Context) {
// typedef int __builtin_va_list[4];
llvm::APInt Size(Context->getTypeSize(Context->getSizeType()), 4);
QualType IntArrayType = Context->getConstantArrayType(
    Context->IntTy, Size, nullptr, ArrayType::Normal, 0);
return Context->buildImplicitTypedef(IntArrayType, "__builtin_va_list");
8995}

8997static TypedefDecl *
8998CreateAAPCSABIBuiltinVaListDecl(const ASTContext *Context) {
// struct __va_list
RecordDecl *VaListDecl = Context->buildImplicitRecord("__va_list");
if (Context->getLangOpts().CPlusPlus) {
  // namespace std { struct __va_list {
  NamespaceDecl *NS;
  NS = NamespaceDecl::Create(const_cast<ASTContext &>(*Context),
                             Context->getTranslationUnitDecl(),
                             /*Inline=*/false, SourceLocation(),
                             SourceLocation(), &Context->Idents.get("std"),
                             /*PrevDecl=*/nullptr, /*Nested=*/false);
  NS->setImplicit();
  VaListDecl->setDeclContext(NS);
}

VaListDecl->startDefinition();

// void * __ap;
FieldDecl *Field = FieldDecl::Create(const_cast<ASTContext &>(*Context),
                                     VaListDecl,
                                     SourceLocation(),
                                     SourceLocation(),
                                     &Context->Idents.get("__ap"),
                                     Context->getPointerType(Context->VoidTy),
                                     /*TInfo=*/nullptr,
                                     /*BitWidth=*/nullptr,
                                     /*Mutable=*/false,
                                     ICIS_NoInit);
Field->setAccess(AS_public);
VaListDecl->addDecl(Field);

// };
VaListDecl->completeDefinition();
Context->VaListTagDecl = VaListDecl;

// typedef struct __va_list __builtin_va_list;
QualType T = Context->getRecordType(VaListDecl);
return Context->buildImplicitTypedef(T, "__builtin_va_list");
9036}

9038static TypedefDecl *
9039CreateSystemZBuiltinVaListDecl(const ASTContext *Context) {
// struct __va_list_tag {
RecordDecl *VaListTagDecl;
VaListTagDecl = Context->buildImplicitRecord("__va_list_tag");
VaListTagDecl->startDefinition();

const size_t NumFields = 4;
QualType FieldTypes[NumFields];
const char *FieldNames[NumFields];

//   long __gpr;
FieldTypes[0] = Context->LongTy;
FieldNames[0] = "__gpr";

//   long __fpr;
FieldTypes[1] = Context->LongTy;
FieldNames[1] = "__fpr";

//   void *__overflow_arg_area;
FieldTypes[2] = Context->getPointerType(Context->VoidTy);
FieldNames[2] = "__overflow_arg_area";

//   void *__reg_save_area;
FieldTypes[3] = Context->getPointerType(Context->VoidTy);
FieldNames[3] = "__reg_save_area";

// Create fields
for (unsigned i = 0; i < NumFields; ++i) {
  FieldDecl *Field = FieldDecl::Create(const_cast<ASTContext &>(*Context),
                                       VaListTagDecl,
                                       SourceLocation(),
                                       SourceLocation(),
                                       &Context->Idents.get(FieldNames[i]),
                                       FieldTypes[i], /*TInfo=*/nullptr,
                                       /*BitWidth=*/nullptr,
                                       /*Mutable=*/false,
                                       ICIS_NoInit);
  Field->setAccess(AS_public);
  VaListTagDecl->addDecl(Field);
}
VaListTagDecl->completeDefinition();
Context->VaListTagDecl = VaListTagDecl;
QualType VaListTagType = Context->getRecordType(VaListTagDecl);

// };

// typedef __va_list_tag __builtin_va_list[1];
llvm::APInt Size(Context->getTypeSize(Context->getSizeType()), 1);
QualType VaListTagArrayType = Context->getConstantArrayType(
    VaListTagType, Size, nullptr, ArrayType::Normal, 0);

return Context->buildImplicitTypedef(VaListTagArrayType, "__builtin_va_list");
9091}

9093static TypedefDecl *CreateHexagonBuiltinVaListDecl(const ASTContext *Context) {
// typedef struct __va_list_tag {
RecordDecl *VaListTagDecl;
VaListTagDecl = Context->buildImplicitRecord("__va_list_tag");
VaListTagDecl->startDefinition();

const size_t NumFields = 3;
QualType FieldTypes[NumFields];
const char *FieldNames[NumFields];

//   void *CurrentSavedRegisterArea;
FieldTypes[0] = Context->getPointerType(Context->VoidTy);
FieldNames[0] = "__current_saved_reg_area_pointer";

//   void *SavedRegAreaEnd;
FieldTypes[1] = Context->getPointerType(Context->VoidTy);
FieldNames[1] = "__saved_reg_area_end_pointer";

//   void *OverflowArea;
FieldTypes[2] = Context->getPointerType(Context->VoidTy);
FieldNames[2] = "__overflow_area_pointer";

// Create fields
for (unsigned i = 0; i < NumFields; ++i) {
  FieldDecl *Field = FieldDecl::Create(
      const_cast<ASTContext &>(*Context), VaListTagDecl, SourceLocation(),
      SourceLocation(), &Context->Idents.get(FieldNames[i]), FieldTypes[i],
      /*TInfo=*/nullptr,
      /*BitWidth=*/nullptr,
      /*Mutable=*/false, ICIS_NoInit);
  Field->setAccess(AS_public);
  VaListTagDecl->addDecl(Field);
}
VaListTagDecl->completeDefinition();
Context->VaListTagDecl = VaListTagDecl;
QualType VaListTagType = Context->getRecordType(VaListTagDecl);

// } __va_list_tag;
TypedefDecl *VaListTagTypedefDecl =
    Context->buildImplicitTypedef(VaListTagType, "__va_list_tag");

QualType VaListTagTypedefType = Context->getTypedefType(VaListTagTypedefDecl);

// typedef __va_list_tag __builtin_va_list[1];
llvm::APInt Size(Context->getTypeSize(Context->getSizeType()), 1);
QualType VaListTagArrayType = Context->getConstantArrayType(
    VaListTagTypedefType, Size, nullptr, ArrayType::Normal, 0);

return Context->buildImplicitTypedef(VaListTagArrayType, "__builtin_va_list");
9142}

9144static TypedefDecl *CreateVaListDecl(const ASTContext *Context,
                                   TargetInfo::BuiltinVaListKind Kind) {
switch (Kind) {
case TargetInfo::CharPtrBuiltinVaList:
  return CreateCharPtrBuiltinVaListDecl(Context);
case TargetInfo::VoidPtrBuiltinVaList:
  return CreateVoidPtrBuiltinVaListDecl(Context);
case TargetInfo::AArch64ABIBuiltinVaList:
  return CreateAArch64ABIBuiltinVaListDecl(Context);
case TargetInfo::PowerABIBuiltinVaList:
  return CreatePowerABIBuiltinVaListDecl(Context);
case TargetInfo::X86_64ABIBuiltinVaList:
  return CreateX86_64ABIBuiltinVaListDecl(Context);
case TargetInfo::PNaClABIBuiltinVaList:
  return CreatePNaClABIBuiltinVaListDecl(Context);
case TargetInfo::AAPCSABIBuiltinVaList:
  return CreateAAPCSABIBuiltinVaListDecl(Context);
case TargetInfo::SystemZBuiltinVaList:
  return CreateSystemZBuiltinVaListDecl(Context);
case TargetInfo::HexagonBuiltinVaList:
  return CreateHexagonBuiltinVaListDecl(Context);
}

llvm_unreachable("Unhandled __builtin_va_list type kind")::llvm::llvm_unreachable_internal("Unhandled __builtin_va_list type kind"
, "clang/lib/AST/ASTContext.cpp", 9167);
9168}

9170TypedefDecl *ASTContext::getBuiltinVaListDecl() const {
if (!BuiltinVaListDecl) {
  BuiltinVaListDecl = CreateVaListDecl(this, Target->getBuiltinVaListKind());
  assert(BuiltinVaListDecl->isImplicit())(static_cast <bool> (BuiltinVaListDecl->isImplicit()
) ? void (0) : __assert_fail ("BuiltinVaListDecl->isImplicit()"
, "clang/lib/AST/ASTContext.cpp", 9173, __extension__ __PRETTY_FUNCTION__
));
}

return BuiltinVaListDecl;
9177}

9179Decl *ASTContext::getVaListTagDecl() const {
// Force the creation of VaListTagDecl by building the __builtin_va_list
// declaration.
if (!VaListTagDecl)
  (void)getBuiltinVaListDecl();

return VaListTagDecl;
9186}

9188TypedefDecl *ASTContext::getBuiltinMSVaListDecl() const {
if (!BuiltinMSVaListDecl)
  BuiltinMSVaListDecl = CreateMSVaListDecl(this);

return BuiltinMSVaListDecl;
9193}

9195bool ASTContext::canBuiltinBeRedeclared(const FunctionDecl *FD) const {
// Allow redecl custom type checking builtin for HLSL.
if (LangOpts.HLSL && FD->getBuiltinID() != Builtin::NotBuiltin &&
    BuiltinInfo.hasCustomTypechecking(FD->getBuiltinID()))
  return true;
return BuiltinInfo.canBeRedeclared(FD->getBuiltinID());
9201}

9203void ASTContext::setObjCConstantStringInterface(ObjCInterfaceDecl *Decl) {
assert(ObjCConstantStringType.isNull() &&(static_cast <bool> (ObjCConstantStringType.isNull() &&
 "'NSConstantString' type already set!") ? void (0) : __assert_fail
 ("ObjCConstantStringType.isNull() && \"'NSConstantString' type already set!\""
, "clang/lib/AST/ASTContext.cpp", 9205, __extension__ __PRETTY_FUNCTION__
))
       "'NSConstantString' type already set!")(static_cast <bool> (ObjCConstantStringType.isNull() &&
 "'NSConstantString' type already set!") ? void (0) : __assert_fail
 ("ObjCConstantStringType.isNull() && \"'NSConstantString' type already set!\""
, "clang/lib/AST/ASTContext.cpp", 9205, __extension__ __PRETTY_FUNCTION__
));

ObjCConstantStringType = getObjCInterfaceType(Decl);
9208}

9210/// Retrieve the template name that corresponds to a non-empty
9211/// lookup.
9212TemplateName
9213ASTContext::getOverloadedTemplateName(UnresolvedSetIterator Begin,
                                    UnresolvedSetIterator End) const {
unsigned size = End - Begin;
assert(size > 1 && "set is not overloaded!")(static_cast <bool> (size > 1 && "set is not overloaded!"
) ? void (0) : __assert_fail ("size > 1 && \"set is not overloaded!\""
, "clang/lib/AST/ASTContext.cpp", 9216, __extension__ __PRETTY_FUNCTION__
));

void *memory = Allocate(sizeof(OverloadedTemplateStorage) +
                        size * sizeof(FunctionTemplateDecl*));
auto *OT = new (memory) OverloadedTemplateStorage(size);

NamedDecl **Storage = OT->getStorage();
for (UnresolvedSetIterator I = Begin; I != End; ++I) {
  NamedDecl *D = *I;
  assert(isa<FunctionTemplateDecl>(D) ||(static_cast <bool> (isa<FunctionTemplateDecl>(D)
 || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl
>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl
()))) ? void (0) : __assert_fail ("isa<FunctionTemplateDecl>(D) || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl()))"
, "clang/lib/AST/ASTContext.cpp", 9228, __extension__ __PRETTY_FUNCTION__
))
         isa<UnresolvedUsingValueDecl>(D) ||(static_cast <bool> (isa<FunctionTemplateDecl>(D)
 || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl
>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl
()))) ? void (0) : __assert_fail ("isa<FunctionTemplateDecl>(D) || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl()))"
, "clang/lib/AST/ASTContext.cpp", 9228, __extension__ __PRETTY_FUNCTION__
))
         (isa<UsingShadowDecl>(D) &&(static_cast <bool> (isa<FunctionTemplateDecl>(D)
 || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl
>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl
()))) ? void (0) : __assert_fail ("isa<FunctionTemplateDecl>(D) || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl()))"
, "clang/lib/AST/ASTContext.cpp", 9228, __extension__ __PRETTY_FUNCTION__
))
          isa<FunctionTemplateDecl>(D->getUnderlyingDecl())))(static_cast <bool> (isa<FunctionTemplateDecl>(D)
 || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl
>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl
()))) ? void (0) : __assert_fail ("isa<FunctionTemplateDecl>(D) || isa<UnresolvedUsingValueDecl>(D) || (isa<UsingShadowDecl>(D) && isa<FunctionTemplateDecl>(D->getUnderlyingDecl()))"
, "clang/lib/AST/ASTContext.cpp", 9228, __extension__ __PRETTY_FUNCTION__
));
  *Storage++ = D;
}

return TemplateName(OT);
9233}

9235/// Retrieve a template name representing an unqualified-id that has been
9236/// assumed to name a template for ADL purposes.
9237TemplateName ASTContext::getAssumedTemplateName(DeclarationName Name) const {
auto *OT = new (*this) AssumedTemplateStorage(Name);
return TemplateName(OT);
9240}

9242/// Retrieve the template name that represents a qualified
9243/// template name such as \c std::vector.
9244TemplateName ASTContext::getQualifiedTemplateName(NestedNameSpecifier *NNS,
                                                bool TemplateKeyword,
                                                TemplateName Template) const {
assert(NNS && "Missing nested-name-specifier in qualified template name")(static_cast <bool> (NNS && "Missing nested-name-specifier in qualified template name"
) ? void (0) : __assert_fail ("NNS && \"Missing nested-name-specifier in qualified template name\""
, "clang/lib/AST/ASTContext.cpp", 9247, __extension__ __PRETTY_FUNCTION__
));

// FIXME: Canonicalization?
llvm::FoldingSetNodeID ID;
QualifiedTemplateName::Profile(ID, NNS, TemplateKeyword, Template);

void *InsertPos = nullptr;
QualifiedTemplateName *QTN =
  QualifiedTemplateNames.FindNodeOrInsertPos(ID, InsertPos);
if (!QTN) {
  QTN = new (*this, alignof(QualifiedTemplateName))
      QualifiedTemplateName(NNS, TemplateKeyword, Template);
  QualifiedTemplateNames.InsertNode(QTN, InsertPos);
}

return TemplateName(QTN);
9263}

9265/// Retrieve the template name that represents a dependent
9266/// template name such as \c MetaFun::template apply.
9267TemplateName
9268ASTContext::getDependentTemplateName(NestedNameSpecifier *NNS,
                                   const IdentifierInfo *Name) const {
assert((!NNS || NNS->isDependent()) &&(static_cast <bool> ((!NNS || NNS->isDependent()) &&
 "Nested name specifier must be dependent") ? void (0) : __assert_fail
 ("(!NNS || NNS->isDependent()) && \"Nested name specifier must be dependent\""
, "clang/lib/AST/ASTContext.cpp", 9271, __extension__ __PRETTY_FUNCTION__
))
       "Nested name specifier must be dependent")(static_cast <bool> ((!NNS || NNS->isDependent()) &&
 "Nested name specifier must be dependent") ? void (0) : __assert_fail
 ("(!NNS || NNS->isDependent()) && \"Nested name specifier must be dependent\""
, "clang/lib/AST/ASTContext.cpp", 9271, __extension__ __PRETTY_FUNCTION__
));

llvm::FoldingSetNodeID ID;
DependentTemplateName::Profile(ID, NNS, Name);

void *InsertPos = nullptr;
DependentTemplateName *QTN =
  DependentTemplateNames.FindNodeOrInsertPos(ID, InsertPos);

if (QTN)
  return TemplateName(QTN);

NestedNameSpecifier *CanonNNS = getCanonicalNestedNameSpecifier(NNS);
if (CanonNNS == NNS) {
  QTN = new (*this, alignof(DependentTemplateName))
      DependentTemplateName(NNS, Name);
} else {
  TemplateName Canon = getDependentTemplateName(CanonNNS, Name);
  QTN = new (*this, alignof(DependentTemplateName))
      DependentTemplateName(NNS, Name, Canon);
  DependentTemplateName *CheckQTN =
    DependentTemplateNames.FindNodeOrInsertPos(ID, InsertPos);
  assert(!CheckQTN && "Dependent type name canonicalization broken")(static_cast <bool> (!CheckQTN && "Dependent type name canonicalization broken"
) ? void (0) : __assert_fail ("!CheckQTN && \"Dependent type name canonicalization broken\""
, "clang/lib/AST/ASTContext.cpp", 9293, __extension__ __PRETTY_FUNCTION__
));
  (void)CheckQTN;
}

DependentTemplateNames.InsertNode(QTN, InsertPos);
return TemplateName(QTN);
9299}

9301/// Retrieve the template name that represents a dependent
9302/// template name such as \c MetaFun::template operator+.
9303TemplateName
9304ASTContext::getDependentTemplateName(NestedNameSpecifier *NNS,
                                   OverloadedOperatorKind Operator) const {
assert((!NNS || NNS->isDependent()) &&(static_cast <bool> ((!NNS || NNS->isDependent()) &&
 "Nested name specifier must be dependent") ? void (0) : __assert_fail
 ("(!NNS || NNS->isDependent()) && \"Nested name specifier must be dependent\""
, "clang/lib/AST/ASTContext.cpp", 9307, __extension__ __PRETTY_FUNCTION__
))
       "Nested name specifier must be dependent")(static_cast <bool> ((!NNS || NNS->isDependent()) &&
 "Nested name specifier must be dependent") ? void (0) : __assert_fail
 ("(!NNS || NNS->isDependent()) && \"Nested name specifier must be dependent\""
, "clang/lib/AST/ASTContext.cpp", 9307, __extension__ __PRETTY_FUNCTION__
));

llvm::FoldingSetNodeID ID;
DependentTemplateName::Profile(ID, NNS, Operator);

void *InsertPos = nullptr;
DependentTemplateName *QTN
  = DependentTemplateNames.FindNodeOrInsertPos(ID, InsertPos);

if (QTN)
  return TemplateName(QTN);

NestedNameSpecifier *CanonNNS = getCanonicalNestedNameSpecifier(NNS);
if (CanonNNS == NNS) {
  QTN = new (*this, alignof(DependentTemplateName))
      DependentTemplateName(NNS, Operator);
} else {
  TemplateName Canon = getDependentTemplateName(CanonNNS, Operator);
  QTN = new (*this, alignof(DependentTemplateName))
      DependentTemplateName(NNS, Operator, Canon);

  DependentTemplateName *CheckQTN
    = DependentTemplateNames.FindNodeOrInsertPos(ID, InsertPos);
  assert(!CheckQTN && "Dependent template name canonicalization broken")(static_cast <bool> (!CheckQTN && "Dependent template name canonicalization broken"
) ? void (0) : __assert_fail ("!CheckQTN && \"Dependent template name canonicalization broken\""
, "clang/lib/AST/ASTContext.cpp", 9330, __extension__ __PRETTY_FUNCTION__
));
  (void)CheckQTN;
}

DependentTemplateNames.InsertNode(QTN, InsertPos);
return TemplateName(QTN);
9336}

9338TemplateName ASTContext::getSubstTemplateTemplateParm(
  TemplateName Replacement, Decl *AssociatedDecl, unsigned Index,
  std::optional<unsigned> PackIndex) const {
llvm::FoldingSetNodeID ID;
SubstTemplateTemplateParmStorage::Profile(ID, Replacement, AssociatedDecl,
                                          Index, PackIndex);

void *insertPos = nullptr;
SubstTemplateTemplateParmStorage *subst
  = SubstTemplateTemplateParms.FindNodeOrInsertPos(ID, insertPos);

if (!subst) {
  subst = new (*this) SubstTemplateTemplateParmStorage(
      Replacement, AssociatedDecl, Index, PackIndex);
  SubstTemplateTemplateParms.InsertNode(subst, insertPos);
}

return TemplateName(subst);
9356}

9358TemplateName
9359ASTContext::getSubstTemplateTemplateParmPack(const TemplateArgument &ArgPack,
                                           Decl *AssociatedDecl,
                                           unsigned Index, bool Final) const {
auto &Self = const_cast<ASTContext &>(*this);
llvm::FoldingSetNodeID ID;
SubstTemplateTemplateParmPackStorage::Profile(ID, Self, ArgPack,
                                              AssociatedDecl, Index, Final);

void *InsertPos = nullptr;
SubstTemplateTemplateParmPackStorage *Subst
  = SubstTemplateTemplateParmPacks.FindNodeOrInsertPos(ID, InsertPos);

if (!Subst) {
  Subst = new (*this) SubstTemplateTemplateParmPackStorage(
      ArgPack.pack_elements(), AssociatedDecl, Index, Final);
  SubstTemplateTemplateParmPacks.InsertNode(Subst, InsertPos);
}

return TemplateName(Subst);
9378}

9380/// getFromTargetType - Given one of the integer types provided by
9381/// TargetInfo, produce the corresponding type. The unsigned @p Type
9382/// is actually a value of type @c TargetInfo::IntType.
9383CanQualType ASTContext::getFromTargetType(unsigned Type) const {
switch (Type) {
case TargetInfo::NoInt: return {};
case TargetInfo::SignedChar: return SignedCharTy;
case TargetInfo::UnsignedChar: return UnsignedCharTy;
case TargetInfo::SignedShort: return ShortTy;
case TargetInfo::UnsignedShort: return UnsignedShortTy;
case TargetInfo::SignedInt: return IntTy;
case TargetInfo::UnsignedInt: return UnsignedIntTy;
case TargetInfo::SignedLong: return LongTy;
case TargetInfo::UnsignedLong: return UnsignedLongTy;
case TargetInfo::SignedLongLong: return LongLongTy;
case TargetInfo::UnsignedLongLong: return UnsignedLongLongTy;
}

llvm_unreachable("Unhandled TargetInfo::IntType value")::llvm::llvm_unreachable_internal("Unhandled TargetInfo::IntType value"
, "clang/lib/AST/ASTContext.cpp", 9398);
9399}

9401//===----------------------------------------------------------------------===//
9402//                        Type Predicates.
9403//===----------------------------------------------------------------------===//

9405/// getObjCGCAttr - Returns one of GCNone, Weak or Strong objc's
9406/// garbage collection attribute.
9407///
9408Qualifiers::GC ASTContext::getObjCGCAttrKind(QualType Ty) const {
if (getLangOpts().getGC() == LangOptions::NonGC)
  return Qualifiers::GCNone;

assert(getLangOpts().ObjC)(static_cast <bool> (getLangOpts().ObjC) ? void (0) : __assert_fail
 ("getLangOpts().ObjC", "clang/lib/AST/ASTContext.cpp", 9412,
 __extension__ __PRETTY_FUNCTION__));
Qualifiers::GC GCAttrs = Ty.getObjCGCAttr();

// Default behaviour under objective-C's gc is for ObjC pointers
// (or pointers to them) be treated as though they were declared
// as __strong.
if (GCAttrs == Qualifiers::GCNone) {
  if (Ty->isObjCObjectPointerType() || Ty->isBlockPointerType())
    return Qualifiers::Strong;
  else if (Ty->isPointerType())
    return getObjCGCAttrKind(Ty->castAs<PointerType>()->getPointeeType());
} else {
  // It's not valid to set GC attributes on anything that isn't a
  // pointer.
9426#ifndef NDEBUG
  QualType CT = Ty->getCanonicalTypeInternal();
  while (const auto *AT = dyn_cast<ArrayType>(CT))
    CT = AT->getElementType();
  assert(CT->isAnyPointerType() || CT->isBlockPointerType())(static_cast <bool> (CT->isAnyPointerType() || CT->
isBlockPointerType()) ? void (0) : __assert_fail ("CT->isAnyPointerType() || CT->isBlockPointerType()"
, "clang/lib/AST/ASTContext.cpp", 9430, __extension__ __PRETTY_FUNCTION__
));
9431#endif
}
return GCAttrs;
9434}

9436//===----------------------------------------------------------------------===//
9437//                        Type Compatibility Testing
9438//===----------------------------------------------------------------------===//

9440/// areCompatVectorTypes - Return true if the two specified vector types are
9441/// compatible.
9442static bool areCompatVectorTypes(const VectorType *LHS,
                               const VectorType *RHS) {
assert(LHS->isCanonicalUnqualified() && RHS->isCanonicalUnqualified())(static_cast <bool> (LHS->isCanonicalUnqualified() &&
 RHS->isCanonicalUnqualified()) ? void (0) : __assert_fail
 ("LHS->isCanonicalUnqualified() && RHS->isCanonicalUnqualified()"
, "clang/lib/AST/ASTContext.cpp", 9444, __extension__ __PRETTY_FUNCTION__
));
return LHS->getElementType() == RHS->getElementType() &&
       LHS->getNumElements() == RHS->getNumElements();
9447}

9449/// areCompatMatrixTypes - Return true if the two specified matrix types are
9450/// compatible.
9451static bool areCompatMatrixTypes(const ConstantMatrixType *LHS,
                               const ConstantMatrixType *RHS) {
assert(LHS->isCanonicalUnqualified() && RHS->isCanonicalUnqualified())(static_cast <bool> (LHS->isCanonicalUnqualified() &&
 RHS->isCanonicalUnqualified()) ? void (0) : __assert_fail
 ("LHS->isCanonicalUnqualified() && RHS->isCanonicalUnqualified()"
, "clang/lib/AST/ASTContext.cpp", 9453, __extension__ __PRETTY_FUNCTION__
));
return LHS->getElementType() == RHS->getElementType() &&
       LHS->getNumRows() == RHS->getNumRows() &&
       LHS->getNumColumns() == RHS->getNumColumns();
9457}

9459bool ASTContext::areCompatibleVectorTypes(QualType FirstVec,
                                        QualType SecondVec) {
assert(FirstVec->isVectorType() && "FirstVec should be a vector type")(static_cast <bool> (FirstVec->isVectorType() &&
 "FirstVec should be a vector type") ? void (0) : __assert_fail
 ("FirstVec->isVectorType() && \"FirstVec should be a vector type\""
, "clang/lib/AST/ASTContext.cpp", 9461, __extension__ __PRETTY_FUNCTION__
));
assert(SecondVec->isVectorType() && "SecondVec should be a vector type")(static_cast <bool> (SecondVec->isVectorType() &&
 "SecondVec should be a vector type") ? void (0) : __assert_fail
 ("SecondVec->isVectorType() && \"SecondVec should be a vector type\""
, "clang/lib/AST/ASTContext.cpp", 9462, __extension__ __PRETTY_FUNCTION__
));

if (hasSameUnqualifiedType(FirstVec, SecondVec))
  return true;

// Treat Neon vector types and most AltiVec vector types as if they are the
// equivalent GCC vector types.
const auto *First = FirstVec->castAs<VectorType>();
const auto *Second = SecondVec->castAs<VectorType>();
if (First->getNumElements() == Second->getNumElements() &&
    hasSameType(First->getElementType(), Second->getElementType()) &&
    First->getVectorKind() != VectorType::AltiVecPixel &&
    First->getVectorKind() != VectorType::AltiVecBool &&
    Second->getVectorKind() != VectorType::AltiVecPixel &&
    Second->getVectorKind() != VectorType::AltiVecBool &&
    First->getVectorKind() != VectorType::SveFixedLengthDataVector &&
    First->getVectorKind() != VectorType::SveFixedLengthPredicateVector &&
    Second->getVectorKind() != VectorType::SveFixedLengthDataVector &&
    Second->getVectorKind() != VectorType::SveFixedLengthPredicateVector &&
    First->getVectorKind() != VectorType::RVVFixedLengthDataVector &&
    Second->getVectorKind() != VectorType::RVVFixedLengthDataVector)
  return true;

return false;
9486}

9488/// getSVETypeSize - Return SVE vector or predicate register size.
9489static uint64_t getSVETypeSize(ASTContext &Context, const BuiltinType *Ty) {
assert(Ty->isVLSTBuiltinType() && "Invalid SVE Type")(static_cast <bool> (Ty->isVLSTBuiltinType() &&
 "Invalid SVE Type") ? void (0) : __assert_fail ("Ty->isVLSTBuiltinType() && \"Invalid SVE Type\""
, "clang/lib/AST/ASTContext.cpp", 9490, __extension__ __PRETTY_FUNCTION__
));
if (Ty->getKind() == BuiltinType::SveBool ||
    Ty->getKind() == BuiltinType::SveCount)
  return (Context.getLangOpts().VScaleMin * 128) / Context.getCharWidth();
return Context.getLangOpts().VScaleMin * 128;
9495}

9497bool ASTContext::areCompatibleSveTypes(QualType FirstType,
                                     QualType SecondType) {
assert((static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9502, __extension__ __PRETTY_FUNCTION__
))
    ((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) ||(static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9502, __extension__ __PRETTY_FUNCTION__
))
     (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) &&(static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9502, __extension__ __PRETTY_FUNCTION__
))
    "Expected SVE builtin type and vector type!")(static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9502, __extension__ __PRETTY_FUNCTION__
));

auto IsValidCast = [this](QualType FirstType, QualType SecondType) {
  if (const auto *BT = FirstType->getAs<BuiltinType>()) {
    if (const auto *VT = SecondType->getAs<VectorType>()) {
      // Predicates have the same representation as uint8 so we also have to
      // check the kind to make these types incompatible.
      if (VT->getVectorKind() == VectorType::SveFixedLengthPredicateVector)
        return BT->getKind() == BuiltinType::SveBool;
      else if (VT->getVectorKind() == VectorType::SveFixedLengthDataVector)
        return VT->getElementType().getCanonicalType() ==
               FirstType->getSveEltType(*this);
      else if (VT->getVectorKind() == VectorType::GenericVector)
        return getTypeSize(SecondType) == getSVETypeSize(*this, BT) &&
               hasSameType(VT->getElementType(),
                           getBuiltinVectorTypeInfo(BT).ElementType);
    }
  }
  return false;
};

return IsValidCast(FirstType, SecondType) ||
       IsValidCast(SecondType, FirstType);
9525}

9527bool ASTContext::areLaxCompatibleSveTypes(QualType FirstType,
                                        QualType SecondType) {
assert((static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9532, __extension__ __PRETTY_FUNCTION__
))
    ((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) ||(static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9532, __extension__ __PRETTY_FUNCTION__
))
     (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) &&(static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9532, __extension__ __PRETTY_FUNCTION__
))
    "Expected SVE builtin type and vector type!")(static_cast <bool> (((FirstType->isSVESizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isSVESizelessBuiltinType
())) && "Expected SVE builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isSVESizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isSVESizelessBuiltinType())) && \"Expected SVE builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9532, __extension__ __PRETTY_FUNCTION__
));

auto IsLaxCompatible = [this](QualType FirstType, QualType SecondType) {
  const auto *BT = FirstType->getAs<BuiltinType>();
  if (!BT)
    return false;

  const auto *VecTy = SecondType->getAs<VectorType>();
  if (VecTy &&
      (VecTy->getVectorKind() == VectorType::SveFixedLengthDataVector ||
       VecTy->getVectorKind() == VectorType::GenericVector)) {
    const LangOptions::LaxVectorConversionKind LVCKind =
        getLangOpts().getLaxVectorConversions();

    // Can not convert between sve predicates and sve vectors because of
    // different size.
    if (BT->getKind() == BuiltinType::SveBool &&
        VecTy->getVectorKind() == VectorType::SveFixedLengthDataVector)
      return false;

    // If __ARM_FEATURE_SVE_BITS != N do not allow GNU vector lax conversion.
    // "Whenever __ARM_FEATURE_SVE_BITS==N, GNUT implicitly
    // converts to VLAT and VLAT implicitly converts to GNUT."
    // ACLE Spec Version 00bet6, 3.7.3.2. Behavior common to vectors and
    // predicates.
    if (VecTy->getVectorKind() == VectorType::GenericVector &&
        getTypeSize(SecondType) != getSVETypeSize(*this, BT))
      return false;

    // If -flax-vector-conversions=all is specified, the types are
    // certainly compatible.
    if (LVCKind == LangOptions::LaxVectorConversionKind::All)
      return true;

    // If -flax-vector-conversions=integer is specified, the types are
    // compatible if the elements are integer types.
    if (LVCKind == LangOptions::LaxVectorConversionKind::Integer)
      return VecTy->getElementType().getCanonicalType()->isIntegerType() &&
             FirstType->getSveEltType(*this)->isIntegerType();
  }

  return false;
};

return IsLaxCompatible(FirstType, SecondType) ||
       IsLaxCompatible(SecondType, FirstType);
9578}

9580/// getRVVTypeSize - Return RVV vector register size.
9581static uint64_t getRVVTypeSize(ASTContext &Context, const BuiltinType *Ty) {
assert(Ty->isRVVVLSBuiltinType() && "Invalid RVV Type")(static_cast <bool> (Ty->isRVVVLSBuiltinType() &&
 "Invalid RVV Type") ? void (0) : __assert_fail ("Ty->isRVVVLSBuiltinType() && \"Invalid RVV Type\""
, "clang/lib/AST/ASTContext.cpp", 9582, __extension__ __PRETTY_FUNCTION__
));
auto VScale = Context.getTargetInfo().getVScaleRange(Context.getLangOpts());
return VScale ? VScale->first * llvm::RISCV::RVVBitsPerBlock : 0;
9585}

9587bool ASTContext::areCompatibleRVVTypes(QualType FirstType,
                                     QualType SecondType) {
assert((static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9592, __extension__ __PRETTY_FUNCTION__
))
    ((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) ||(static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9592, __extension__ __PRETTY_FUNCTION__
))
     (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) &&(static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9592, __extension__ __PRETTY_FUNCTION__
))
    "Expected RVV builtin type and vector type!")(static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9592, __extension__ __PRETTY_FUNCTION__
));

auto IsValidCast = [this](QualType FirstType, QualType SecondType) {
  if (const auto *BT = FirstType->getAs<BuiltinType>()) {
    if (const auto *VT = SecondType->getAs<VectorType>()) {
      // Predicates have the same representation as uint8 so we also have to
      // check the kind to make these types incompatible.
      if (VT->getVectorKind() == VectorType::RVVFixedLengthDataVector)
        return FirstType->isRVVVLSBuiltinType() &&
               VT->getElementType().getCanonicalType() ==
                   FirstType->getRVVEltType(*this);
      if (VT->getVectorKind() == VectorType::GenericVector)
        return getTypeSize(SecondType) == getRVVTypeSize(*this, BT) &&
               hasSameType(VT->getElementType(),
                           getBuiltinVectorTypeInfo(BT).ElementType);
    }
  }
  return false;
};

return IsValidCast(FirstType, SecondType) ||
       IsValidCast(SecondType, FirstType);
9614}

9616bool ASTContext::areLaxCompatibleRVVTypes(QualType FirstType,
                                        QualType SecondType) {
assert((static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9621, __extension__ __PRETTY_FUNCTION__
))
    ((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) ||(static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9621, __extension__ __PRETTY_FUNCTION__
))
     (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) &&(static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9621, __extension__ __PRETTY_FUNCTION__
))
    "Expected RVV builtin type and vector type!")(static_cast <bool> (((FirstType->isRVVSizelessBuiltinType
() && SecondType->isVectorType()) || (FirstType->
isVectorType() && SecondType->isRVVSizelessBuiltinType
())) && "Expected RVV builtin type and vector type!")
 ? void (0) : __assert_fail ("((FirstType->isRVVSizelessBuiltinType() && SecondType->isVectorType()) || (FirstType->isVectorType() && SecondType->isRVVSizelessBuiltinType())) && \"Expected RVV builtin type and vector type!\""
, "clang/lib/AST/ASTContext.cpp", 9621, __extension__ __PRETTY_FUNCTION__
));

auto IsLaxCompatible = [this](QualType FirstType, QualType SecondType) {
  const auto *BT = FirstType->getAs<BuiltinType>();
  if (!BT)
    return false;

  const auto *VecTy = SecondType->getAs<VectorType>();
  if (VecTy &&
      (VecTy->getVectorKind() == VectorType::RVVFixedLengthDataVector ||
       VecTy->getVectorKind() == VectorType::GenericVector)) {
    const LangOptions::LaxVectorConversionKind LVCKind =
        getLangOpts().getLaxVectorConversions();

    // If __riscv_v_fixed_vlen != N do not allow GNU vector lax conversion.
    if (VecTy->getVectorKind() == VectorType::GenericVector &&
        getTypeSize(SecondType) != getRVVTypeSize(*this, BT))
      return false;

    // If -flax-vector-conversions=all is specified, the types are
    // certainly compatible.
    if (LVCKind == LangOptions::LaxVectorConversionKind::All)
      return true;

    // If -flax-vector-conversions=integer is specified, the types are
    // compatible if the elements are integer types.
    if (LVCKind == LangOptions::LaxVectorConversionKind::Integer)
      return VecTy->getElementType().getCanonicalType()->isIntegerType() &&
             FirstType->getRVVEltType(*this)->isIntegerType();
  }

  return false;
};

return IsLaxCompatible(FirstType, SecondType) ||
       IsLaxCompatible(SecondType, FirstType);
9657}

9659bool ASTContext::hasDirectOwnershipQualifier(QualType Ty) const {
while (true) {
  // __strong id
  if (const AttributedType *Attr = dyn_cast<AttributedType>(Ty)) {
    if (Attr->getAttrKind() == attr::ObjCOwnership)
      return true;

    Ty = Attr->getModifiedType();

  // X *__strong (...)
  } else if (const ParenType *Paren = dyn_cast<ParenType>(Ty)) {
    Ty = Paren->getInnerType();

  // We do not want to look through typedefs, typeof(expr),
  // typeof(type), or any other way that the type is somehow
  // abstracted.
  } else {
    return false;
  }
}
9679}

9681//===----------------------------------------------------------------------===//
9682// ObjCQualifiedIdTypesAreCompatible - Compatibility testing for qualified id's.
9683//===----------------------------------------------------------------------===//

9685/// ProtocolCompatibleWithProtocol - return 'true' if 'lProto' is in the
9686/// inheritance hierarchy of 'rProto'.
9687bool
9688ASTContext::ProtocolCompatibleWithProtocol(ObjCProtocolDecl *lProto,
                                         ObjCProtocolDecl *rProto) const {
if (declaresSameEntity(lProto, rProto))
  return true;
for (auto *PI : rProto->protocols())
  if (ProtocolCompatibleWithProtocol(lProto, PI))
    return true;
return false;
9696}

9698/// ObjCQualifiedClassTypesAreCompatible - compare  Class<pr,...> and
9699/// Class<pr1, ...>.
9700bool ASTContext::ObjCQualifiedClassTypesAreCompatible(
  const ObjCObjectPointerType *lhs, const ObjCObjectPointerType *rhs) {
for (auto *lhsProto : lhs->quals()) {
  bool match = false;
  for (auto *rhsProto : rhs->quals()) {
    if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto)) {
      match = true;
      break;
    }
  }
  if (!match)
    return false;
}
return true;
9714}

9716/// ObjCQualifiedIdTypesAreCompatible - We know that one of lhs/rhs is an
9717/// ObjCQualifiedIDType.
9718bool ASTContext::ObjCQualifiedIdTypesAreCompatible(
  const ObjCObjectPointerType *lhs, const ObjCObjectPointerType *rhs,
  bool compare) {
// Allow id<P..> and an 'id' in all cases.
if (lhs->isObjCIdType() || rhs->isObjCIdType())
  return true;

// Don't allow id<P..> to convert to Class or Class<P..> in either direction.
if (lhs->isObjCClassType() || lhs->isObjCQualifiedClassType() ||
    rhs->isObjCClassType() || rhs->isObjCQualifiedClassType())
  return false;

if (lhs->isObjCQualifiedIdType()) {
  if (rhs->qual_empty()) {
    // If the RHS is a unqualified interface pointer "NSString*",
    // make sure we check the class hierarchy.
    if (ObjCInterfaceDecl *rhsID = rhs->getInterfaceDecl()) {
      for (auto *I : lhs->quals()) {
        // when comparing an id<P> on lhs with a static type on rhs,
        // see if static class implements all of id's protocols, directly or
        // through its super class and categories.
        if (!rhsID->ClassImplementsProtocol(I, true))
          return false;
      }
    }
    // If there are no qualifiers and no interface, we have an 'id'.
    return true;
  }
  // Both the right and left sides have qualifiers.
  for (auto *lhsProto : lhs->quals()) {
    bool match = false;

    // when comparing an id<P> on lhs with a static type on rhs,
    // see if static class implements all of id's protocols, directly or
    // through its super class and categories.
    for (auto *rhsProto : rhs->quals()) {
      if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) ||
          (compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) {
        match = true;
        break;
      }
    }
    // If the RHS is a qualified interface pointer "NSString<P>*",
    // make sure we check the class hierarchy.
    if (ObjCInterfaceDecl *rhsID = rhs->getInterfaceDecl()) {
      for (auto *I : lhs->quals()) {
        // when comparing an id<P> on lhs with a static type on rhs,
        // see if static class implements all of id's protocols, directly or
        // through its super class and categories.
        if (rhsID->ClassImplementsProtocol(I, true)) {
          match = true;
          break;
        }
      }
    }
    if (!match)
      return false;
  }

  return true;
}

assert(rhs->isObjCQualifiedIdType() && "One of the LHS/RHS should be id<x>")(static_cast <bool> (rhs->isObjCQualifiedIdType() &&
 "One of the LHS/RHS should be id<x>") ? void (0) : __assert_fail
 ("rhs->isObjCQualifiedIdType() && \"One of the LHS/RHS should be id<x>\""
, "clang/lib/AST/ASTContext.cpp", 9780, __extension__ __PRETTY_FUNCTION__
));

if (lhs->getInterfaceType()) {
  // If both the right and left sides have qualifiers.
  for (auto *lhsProto : lhs->quals()) {
    bool match = false;

    // when comparing an id<P> on rhs with a static type on lhs,
    // see if static class implements all of id's protocols, directly or
    // through its super class and categories.
    // First, lhs protocols in the qualifier list must be found, direct
    // or indirect in rhs's qualifier list or it is a mismatch.
    for (auto *rhsProto : rhs->quals()) {
      if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) ||
          (compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) {
        match = true;
        break;
      }
    }
    if (!match)
      return false;
  }

  // Static class's protocols, or its super class or category protocols
  // must be found, direct or indirect in rhs's qualifier list or it is a mismatch.
  if (ObjCInterfaceDecl *lhsID = lhs->getInterfaceDecl()) {
    llvm::SmallPtrSet<ObjCProtocolDecl *, 8> LHSInheritedProtocols;
    CollectInheritedProtocols(lhsID, LHSInheritedProtocols);
    // This is rather dubious but matches gcc's behavior. If lhs has
    // no type qualifier and its class has no static protocol(s)
    // assume that it is mismatch.
    if (LHSInheritedProtocols.empty() && lhs->qual_empty())
      return false;
    for (auto *lhsProto : LHSInheritedProtocols) {
      bool match = false;
      for (auto *rhsProto : rhs->quals()) {
        if (ProtocolCompatibleWithProtocol(lhsProto, rhsProto) ||
            (compare && ProtocolCompatibleWithProtocol(rhsProto, lhsProto))) {
          match = true;
          break;
        }
      }
      if (!match)
        return false;
    }
  }
  return true;
}
return false;
9829}

9831/// canAssignObjCInterfaces - Return true if the two interface types are
9832/// compatible for assignment from RHS to LHS.  This handles validation of any
9833/// protocol qualifiers on the LHS or RHS.
9834bool ASTContext::canAssignObjCInterfaces(const ObjCObjectPointerType *LHSOPT,
                                       const ObjCObjectPointerType *RHSOPT) {
const ObjCObjectType* LHS = LHSOPT->getObjectType();
const ObjCObjectType* RHS = RHSOPT->getObjectType();

// If either type represents the built-in 'id' type, return true.
if (LHS->isObjCUnqualifiedId() || RHS->isObjCUnqualifiedId())
  return true;

// Function object that propagates a successful result or handles
// __kindof types.
auto finish = [&](bool succeeded) -> bool {
  if (succeeded)
    return true;

  if (!RHS->isKindOfType())
    return false;

  // Strip off __kindof and protocol qualifiers, then check whether
  // we can assign the other way.
  return canAssignObjCInterfaces(RHSOPT->stripObjCKindOfTypeAndQuals(*this),
                                 LHSOPT->stripObjCKindOfTypeAndQuals(*this));
};

// Casts from or to id<P> are allowed when the other side has compatible
// protocols.
if (LHS->isObjCQualifiedId() || RHS->isObjCQualifiedId()) {
  return finish(ObjCQualifiedIdTypesAreCompatible(LHSOPT, RHSOPT, false));
}

// Verify protocol compatibility for casts from Class<P1> to Class<P2>.
if (LHS->isObjCQualifiedClass() && RHS->isObjCQualifiedClass()) {
  return finish(ObjCQualifiedClassTypesAreCompatible(LHSOPT, RHSOPT));
}

// Casts from Class to Class<Foo>, or vice-versa, are allowed.
if (LHS->isObjCClass() && RHS->isObjCClass()) {
  return true;
}

// If we have 2 user-defined types, fall into that path.
if (LHS->getInterface() && RHS->getInterface()) {
  return finish(canAssignObjCInterfaces(LHS, RHS));
}

return false;
9880}

9882/// canAssignObjCInterfacesInBlockPointer - This routine is specifically written
9883/// for providing type-safety for objective-c pointers used to pass/return
9884/// arguments in block literals. When passed as arguments, passing 'A*' where
9885/// 'id' is expected is not OK. Passing 'Sub *" where 'Super *" is expected is
9886/// not OK. For the return type, the opposite is not OK.
9887bool ASTContext::canAssignObjCInterfacesInBlockPointer(
                                       const ObjCObjectPointerType *LHSOPT,
                                       const ObjCObjectPointerType *RHSOPT,
                                       bool BlockReturnType) {

// Function object that propagates a successful result or handles
// __kindof types.
auto finish = [&](bool succeeded) -> bool {
  if (succeeded)
    return true;

  const ObjCObjectPointerType *Expected = BlockReturnType ? RHSOPT : LHSOPT;
  if (!Expected->isKindOfType())
    return false;

  // Strip off __kindof and protocol qualifiers, then check whether
  // we can assign the other way.
  return canAssignObjCInterfacesInBlockPointer(
           RHSOPT->stripObjCKindOfTypeAndQuals(*this),
           LHSOPT->stripObjCKindOfTypeAndQuals(*this),
           BlockReturnType);
};

if (RHSOPT->isObjCBuiltinType() || LHSOPT->isObjCIdType())
  return true;

if (LHSOPT->isObjCBuiltinType()) {
  return finish(RHSOPT->isObjCBuiltinType() ||
                RHSOPT->isObjCQualifiedIdType());
}

if (LHSOPT->isObjCQualifiedIdType() || RHSOPT->isObjCQualifiedIdType()) {
  if (getLangOpts().CompatibilityQualifiedIdBlockParamTypeChecking)
    // Use for block parameters previous type checking for compatibility.
    return finish(ObjCQualifiedIdTypesAreCompatible(LHSOPT, RHSOPT, false) ||
                  // Or corrected type checking as in non-compat mode.
                  (!BlockReturnType &&
                   ObjCQualifiedIdTypesAreCompatible(RHSOPT, LHSOPT, false)));
  else
    return finish(ObjCQualifiedIdTypesAreCompatible(
        (BlockReturnType ? LHSOPT : RHSOPT),
        (BlockReturnType ? RHSOPT : LHSOPT), false));
}

const ObjCInterfaceType* LHS = LHSOPT->getInterfaceType();
const ObjCInterfaceType* RHS = RHSOPT->getInterfaceType();
if (LHS && RHS)  { // We have 2 user-defined types.
  if (LHS != RHS) {
    if (LHS->getDecl()->isSuperClassOf(RHS->getDecl()))
      return finish(BlockReturnType);
    if (RHS->getDecl()->isSuperClassOf(LHS->getDecl()))
      return finish(!BlockReturnType);
  }
  else
    return true;
}
return false;
9944}

9946/// Comparison routine for Objective-C protocols to be used with
9947/// llvm::array_pod_sort.
9948static int compareObjCProtocolsByName(ObjCProtocolDecl * const *lhs,
                                    ObjCProtocolDecl * const *rhs) {
return (*lhs)->getName().compare((*rhs)->getName());
9951}

9953/// getIntersectionOfProtocols - This routine finds the intersection of set
9954/// of protocols inherited from two distinct objective-c pointer objects with
9955/// the given common base.
9956/// It is used to build composite qualifier list of the composite type of
9957/// the conditional expression involving two objective-c pointer objects.
9958static
9959void getIntersectionOfProtocols(ASTContext &Context,
                              const ObjCInterfaceDecl *CommonBase,
                              const ObjCObjectPointerType *LHSOPT,
                              const ObjCObjectPointerType *RHSOPT,
    SmallVectorImpl<ObjCProtocolDecl *> &IntersectionSet) {

const ObjCObjectType* LHS = LHSOPT->getObjectType();
const ObjCObjectType* RHS = RHSOPT->getObjectType();
assert(LHS->getInterface() && "LHS must have an interface base")(static_cast <bool> (LHS->getInterface() && "LHS must have an interface base"
) ? void (0) : __assert_fail ("LHS->getInterface() && \"LHS must have an interface base\""
, "clang/lib/AST/ASTContext.cpp", 9967, __extension__ __PRETTY_FUNCTION__
));
assert(RHS->getInterface() && "RHS must have an interface base")(static_cast <bool> (RHS->getInterface() && "RHS must have an interface base"
) ? void (0) : __assert_fail ("RHS->getInterface() && \"RHS must have an interface base\""
, "clang/lib/AST/ASTContext.cpp", 9968, __extension__ __PRETTY_FUNCTION__
));

// Add all of the protocols for the LHS.
llvm::SmallPtrSet<ObjCProtocolDecl *, 8> LHSProtocolSet;

// Start with the protocol qualifiers.
for (auto *proto : LHS->quals()) {
  Context.CollectInheritedProtocols(proto, LHSProtocolSet);
}

// Also add the protocols associated with the LHS interface.
Context.CollectInheritedProtocols(LHS->getInterface(), LHSProtocolSet);

// Add all of the protocols for the RHS.
llvm::SmallPtrSet<ObjCProtocolDecl *, 8> RHSProtocolSet;

// Start with the protocol qualifiers.
for (auto *proto : RHS->quals()) {
  Context.CollectInheritedProtocols(proto, RHSProtocolSet);
}

// Also add the protocols associated with the RHS interface.
Context.CollectInheritedProtocols(RHS->getInterface(), RHSProtocolSet);

// Compute the intersection of the collected protocol sets.
for (auto *proto : LHSProtocolSet) {
  if (RHSProtocolSet.count(proto))
    IntersectionSet.push_back(proto);
}

// Compute the set of protocols that is implied by either the common type or
// the protocols within the intersection.
llvm::SmallPtrSet<ObjCProtocolDecl *, 8> ImpliedProtocols;
Context.CollectInheritedProtocols(CommonBase, ImpliedProtocols);

// Remove any implied protocols from the list of inherited protocols.
if (!ImpliedProtocols.empty()) {
  llvm::erase_if(IntersectionSet, [&](ObjCProtocolDecl *proto) -> bool {
    return ImpliedProtocols.contains(proto);
  });
}

// Sort the remaining protocols by name.
llvm::array_pod_sort(IntersectionSet.begin(), IntersectionSet.end(),
                     compareObjCProtocolsByName);
10013}

10015/// Determine whether the first type is a subtype of the second.
10016static bool canAssignObjCObjectTypes(ASTContext &ctx, QualType lhs,
                                   QualType rhs) {
// Common case: two object pointers.
const auto *lhsOPT = lhs->getAs<ObjCObjectPointerType>();
const auto *rhsOPT = rhs->getAs<ObjCObjectPointerType>();
if (lhsOPT && rhsOPT)
  return ctx.canAssignObjCInterfaces(lhsOPT, rhsOPT);

// Two block pointers.
const auto *lhsBlock = lhs->getAs<BlockPointerType>();
const auto *rhsBlock = rhs->getAs<BlockPointerType>();
if (lhsBlock && rhsBlock)
  return ctx.typesAreBlockPointerCompatible(lhs, rhs);

// If either is an unqualified 'id' and the other is a block, it's
// acceptable.
if ((lhsOPT && lhsOPT->isObjCIdType() && rhsBlock) ||
    (rhsOPT && rhsOPT->isObjCIdType() && lhsBlock))
  return true;

return false;
10037}

10039// Check that the given Objective-C type argument lists are equivalent.
10040static bool sameObjCTypeArgs(ASTContext &ctx,
                           const ObjCInterfaceDecl *iface,
                           ArrayRef<QualType> lhsArgs,
                           ArrayRef<QualType> rhsArgs,
                           bool stripKindOf) {
if (lhsArgs.size() != rhsArgs.size())
  return false;

ObjCTypeParamList *typeParams = iface->getTypeParamList();
for (unsigned i = 0, n = lhsArgs.size(); i != n; ++i) {
  if (ctx.hasSameType(lhsArgs[i], rhsArgs[i]))
    continue;

  switch (typeParams->begin()[i]->getVariance()) {
  case ObjCTypeParamVariance::Invariant:
    if (!stripKindOf ||
        !ctx.hasSameType(lhsArgs[i].stripObjCKindOfType(ctx),
                         rhsArgs[i].stripObjCKindOfType(ctx))) {
      return false;
    }
    break;

  case ObjCTypeParamVariance::Covariant:
    if (!canAssignObjCObjectTypes(ctx, lhsArgs[i], rhsArgs[i]))
      return false;
    break;

  case ObjCTypeParamVariance::Contravariant:
    if (!canAssignObjCObjectTypes(ctx, rhsArgs[i], lhsArgs[i]))
      return false;
    break;
  }
}

return true;
10075}

10077QualType ASTContext::areCommonBaseCompatible(
         const ObjCObjectPointerType *Lptr,
         const ObjCObjectPointerType *Rptr) {
const ObjCObjectType *LHS = Lptr->getObjectType();
const ObjCObjectType *RHS = Rptr->getObjectType();
const ObjCInterfaceDecl* LDecl = LHS->getInterface();
const ObjCInterfaceDecl* RDecl = RHS->getInterface();

if (!LDecl || !RDecl)
  return {};

// When either LHS or RHS is a kindof type, we should return a kindof type.
// For example, for common base of kindof(ASub1) and kindof(ASub2), we return
// kindof(A).
bool anyKindOf = LHS->isKindOfType() || RHS->isKindOfType();

// Follow the left-hand side up the class hierarchy until we either hit a
// root or find the RHS. Record the ancestors in case we don't find it.
llvm::SmallDenseMap<const ObjCInterfaceDecl *, const ObjCObjectType *, 4>
  LHSAncestors;
while (true) {
  // Record this ancestor. We'll need this if the common type isn't in the
  // path from the LHS to the root.
  LHSAncestors[LHS->getInterface()->getCanonicalDecl()] = LHS;

  if (declaresSameEntity(LHS->getInterface(), RDecl)) {
    // Get the type arguments.
    ArrayRef<QualType> LHSTypeArgs = LHS->getTypeArgsAsWritten();
    bool anyChanges = false;
    if (LHS->isSpecialized() && RHS->isSpecialized()) {
      // Both have type arguments, compare them.
      if (!sameObjCTypeArgs(*this, LHS->getInterface(),
                            LHS->getTypeArgs(), RHS->getTypeArgs(),
                            /*stripKindOf=*/true))
        return {};
    } else if (LHS->isSpecialized() != RHS->isSpecialized()) {
      // If only one has type arguments, the result will not have type
      // arguments.
      LHSTypeArgs = {};
      anyChanges = true;
    }

    // Compute the intersection of protocols.
    SmallVector<ObjCProtocolDecl *, 8> Protocols;
    getIntersectionOfProtocols(*this, LHS->getInterface(), Lptr, Rptr,
                               Protocols);
    if (!Protocols.empty())
      anyChanges = true;

    // If anything in the LHS will have changed, build a new result type.
    // If we need to return a kindof type but LHS is not a kindof type, we
    // build a new result type.
    if (anyChanges || LHS->isKindOfType() != anyKindOf) {
      QualType Result = getObjCInterfaceType(LHS->getInterface());
      Result = getObjCObjectType(Result, LHSTypeArgs, Protocols,
                                 anyKindOf || LHS->isKindOfType());
      return getObjCObjectPointerType(Result);
    }

    return getObjCObjectPointerType(QualType(LHS, 0));
  }

  // Find the superclass.
  QualType LHSSuperType = LHS->getSuperClassType();
  if (LHSSuperType.isNull())
    break;

  LHS = LHSSuperType->castAs<ObjCObjectType>();
}

// We didn't find anything by following the LHS to its root; now check
// the RHS against the cached set of ancestors.
while (true) {
  auto KnownLHS = LHSAncestors.find(RHS->getInterface()->getCanonicalDecl());
  if (KnownLHS != LHSAncestors.end()) {
    LHS = KnownLHS->second;

    // Get the type arguments.
    ArrayRef<QualType> RHSTypeArgs = RHS->getTypeArgsAsWritten();
    bool anyChanges = false;
    if (LHS->isSpecialized() && RHS->isSpecialized()) {
      // Both have type arguments, compare them.
      if (!sameObjCTypeArgs(*this, LHS->getInterface(),
                            LHS->getTypeArgs(), RHS->getTypeArgs(),
                            /*stripKindOf=*/true))
        return {};
    } else if (LHS->isSpecialized() != RHS->isSpecialized()) {
      // If only one has type arguments, the result will not have type
      // arguments.
      RHSTypeArgs = {};
      anyChanges = true;
    }

    // Compute the intersection of protocols.
    SmallVector<ObjCProtocolDecl *, 8> Protocols;
    getIntersectionOfProtocols(*this, RHS->getInterface(), Lptr, Rptr,
                               Protocols);
    if (!Protocols.empty())
      anyChanges = true;

    // If we need to return a kindof type but RHS is not a kindof type, we
    // build a new result type.
    if (anyChanges || RHS->isKindOfType() != anyKindOf) {
      QualType Result = getObjCInterfaceType(RHS->getInterface());
      Result = getObjCObjectType(Result, RHSTypeArgs, Protocols,
                                 anyKindOf || RHS->isKindOfType());
      return getObjCObjectPointerType(Result);
    }

    return getObjCObjectPointerType(QualType(RHS, 0));
  }

  // Find the superclass of the RHS.
  QualType RHSSuperType = RHS->getSuperClassType();
  if (RHSSuperType.isNull())
    break;

  RHS = RHSSuperType->castAs<ObjCObjectType>();
}

return {};
10198}

10200bool ASTContext::canAssignObjCInterfaces(const ObjCObjectType *LHS,
                                       const ObjCObjectType *RHS) {
assert(LHS->getInterface() && "LHS is not an interface type")(static_cast <bool> (LHS->getInterface() && "LHS is not an interface type"
) ? void (0) : __assert_fail ("LHS->getInterface() && \"LHS is not an interface type\""
, "clang/lib/AST/ASTContext.cpp", 10202, __extension__ __PRETTY_FUNCTION__
));
assert(RHS->getInterface() && "RHS is not an interface type")(static_cast <bool> (RHS->getInterface() && "RHS is not an interface type"
) ? void (0) : __assert_fail ("RHS->getInterface() && \"RHS is not an interface type\""
, "clang/lib/AST/ASTContext.cpp", 10203, __extension__ __PRETTY_FUNCTION__
));

// Verify that the base decls are compatible: the RHS must be a subclass of
// the LHS.
ObjCInterfaceDecl *LHSInterface = LHS->getInterface();
bool IsSuperClass = LHSInterface->isSuperClassOf(RHS->getInterface());
if (!IsSuperClass)
  return false;

// If the LHS has protocol qualifiers, determine whether all of them are
// satisfied by the RHS (i.e., the RHS has a superset of the protocols in the
// LHS).
if (LHS->getNumProtocols() > 0) {
  // OK if conversion of LHS to SuperClass results in narrowing of types
  // ; i.e., SuperClass may implement at least one of the protocols
  // in LHS's protocol list. Example, SuperObj<P1> = lhs<P1,P2> is ok.
  // But not SuperObj<P1,P2,P3> = lhs<P1,P2>.
  llvm::SmallPtrSet<ObjCProtocolDecl *, 8> SuperClassInheritedProtocols;
  CollectInheritedProtocols(RHS->getInterface(), SuperClassInheritedProtocols);
  // Also, if RHS has explicit quelifiers, include them for comparing with LHS's
  // qualifiers.
  for (auto *RHSPI : RHS->quals())
    CollectInheritedProtocols(RHSPI, SuperClassInheritedProtocols);
  // If there is no protocols associated with RHS, it is not a match.
  if (SuperClassInheritedProtocols.empty())
    return false;

  for (const auto *LHSProto : LHS->quals()) {
    bool SuperImplementsProtocol = false;
    for (auto *SuperClassProto : SuperClassInheritedProtocols)
      if (SuperClassProto->lookupProtocolNamed(LHSProto->getIdentifier())) {
        SuperImplementsProtocol = true;
        break;
      }
    if (!SuperImplementsProtocol)
      return false;
  }
}

// If the LHS is specialized, we may need to check type arguments.
if (LHS->isSpecialized()) {
  // Follow the superclass chain until we've matched the LHS class in the
  // hierarchy. This substitutes type arguments through.
  const ObjCObjectType *RHSSuper = RHS;
  while (!declaresSameEntity(RHSSuper->getInterface(), LHSInterface))
    RHSSuper = RHSSuper->getSuperClassType()->castAs<ObjCObjectType>();

  // If the RHS is specializd, compare type arguments.
  if (RHSSuper->isSpecialized() &&
      !sameObjCTypeArgs(*this, LHS->getInterface(),
                        LHS->getTypeArgs(), RHSSuper->getTypeArgs(),
                        /*stripKindOf=*/true)) {
    return false;
  }
}

return true;
10260}

10262bool ASTContext::areComparableObjCPointerTypes(QualType LHS, QualType RHS) {
// get the "pointed to" types
const auto *LHSOPT = LHS->getAs<ObjCObjectPointerType>();
const auto *RHSOPT = RHS->getAs<ObjCObjectPointerType>();

if (!LHSOPT || !RHSOPT)
  return false;

return canAssignObjCInterfaces(LHSOPT, RHSOPT) ||
       canAssignObjCInterfaces(RHSOPT, LHSOPT);
10272}

10274bool ASTContext::canBindObjCObjectType(QualType To, QualType From) {
return canAssignObjCInterfaces(
    getObjCObjectPointerType(To)->castAs<ObjCObjectPointerType>(),
    getObjCObjectPointerType(From)->castAs<ObjCObjectPointerType>());
10278}

10280/// typesAreCompatible - C99 6.7.3p9: For two qualified types to be compatible,
10281/// both shall have the identically qualified version of a compatible type.
10282/// C99 6.2.7p1: Two types have compatible types if their types are the
10283/// same. See 6.7.[2,3,5] for additional rules.
10284bool ASTContext::typesAreCompatible(QualType LHS, QualType RHS,
                                  bool CompareUnqualified) {
if (getLangOpts().CPlusPlus)
  return hasSameType(LHS, RHS);

return !mergeTypes(LHS, RHS, false, CompareUnqualified).isNull();
10290}

10292bool ASTContext::propertyTypesAreCompatible(QualType LHS, QualType RHS) {
return typesAreCompatible(LHS, RHS);
10294}

10296bool ASTContext::typesAreBlockPointerCompatible(QualType LHS, QualType RHS) {
return !mergeTypes(LHS, RHS, true).isNull();
10298}

10300/// mergeTransparentUnionType - if T is a transparent union type and a member
10301/// of T is compatible with SubType, return the merged type, else return
10302/// QualType()
10303QualType ASTContext::mergeTransparentUnionType(QualType T, QualType SubType,
                                             bool OfBlockPointer,
                                             bool Unqualified) {
if (const RecordType *UT = T->getAsUnionType()) {
  RecordDecl *UD = UT->getDecl();
  if (UD->hasAttr<TransparentUnionAttr>()) {
    for (const auto *I : UD->fields()) {
      QualType ET = I->getType().getUnqualifiedType();
      QualType MT = mergeTypes(ET, SubType, OfBlockPointer, Unqualified);
      if (!MT.isNull())
        return MT;
    }
  }
}

return {};
10319}

10321/// mergeFunctionParameterTypes - merge two types which appear as function
10322/// parameter types
10323QualType ASTContext::mergeFunctionParameterTypes(QualType lhs, QualType rhs,
                                               bool OfBlockPointer,
                                               bool Unqualified) {
// GNU extension: two types are compatible if they appear as a function
// argument, one of the types is a transparent union type and the other
// type is compatible with a union member
QualType lmerge = mergeTransparentUnionType(lhs, rhs, OfBlockPointer,
                                            Unqualified);
if (!lmerge.isNull())
  return lmerge;

QualType rmerge = mergeTransparentUnionType(rhs, lhs, OfBlockPointer,
                                            Unqualified);
if (!rmerge.isNull())
  return rmerge;

return mergeTypes(lhs, rhs, OfBlockPointer, Unqualified);
10340}

10342QualType ASTContext::mergeFunctionTypes(QualType lhs, QualType rhs,
                                      bool OfBlockPointer, bool Unqualified,
                                      bool AllowCXX,
                                      bool IsConditionalOperator) {
const auto *lbase = lhs->castAs<FunctionType>();
const auto *rbase = rhs->castAs<FunctionType>();
const auto *lproto = dyn_cast<FunctionProtoType>(lbase);
const auto *rproto = dyn_cast<FunctionProtoType>(rbase);
bool allLTypes = true;
bool allRTypes = true;

// Check return type
QualType retType;
if (OfBlockPointer) {
  QualType RHS = rbase->getReturnType();
  QualType LHS = lbase->getReturnType();
  bool UnqualifiedResult = Unqualified;
  if (!UnqualifiedResult)
    UnqualifiedResult = (!RHS.hasQualifiers() && LHS.hasQualifiers());
  retType = mergeTypes(LHS, RHS, true, UnqualifiedResult, true);
}
else
  retType = mergeTypes(lbase->getReturnType(), rbase->getReturnType(), false,
                       Unqualified);
if (retType.isNull())
  return {};

if (Unqualified)
  retType = retType.getUnqualifiedType();

CanQualType LRetType = getCanonicalType(lbase->getReturnType());
CanQualType RRetType = getCanonicalType(rbase->getReturnType());
if (Unqualified) {
  LRetType = LRetType.getUnqualifiedType();
  RRetType = RRetType.getUnqualifiedType();
}

if (getCanonicalType(retType) != LRetType)
  allLTypes = false;
if (getCanonicalType(retType) != RRetType)
  allRTypes = false;

// FIXME: double check this
// FIXME: should we error if lbase->getRegParmAttr() != 0 &&
//                           rbase->getRegParmAttr() != 0 &&
//                           lbase->getRegParmAttr() != rbase->getRegParmAttr()?
FunctionType::ExtInfo lbaseInfo = lbase->getExtInfo();
FunctionType::ExtInfo rbaseInfo = rbase->getExtInfo();

// Compatible functions must have compatible calling conventions
if (lbaseInfo.getCC() != rbaseInfo.getCC())
  return {};

// Regparm is part of the calling convention.
if (lbaseInfo.getHasRegParm() != rbaseInfo.getHasRegParm())
  return {};
if (lbaseInfo.getRegParm() != rbaseInfo.getRegParm())
  return {};

if (lbaseInfo.getProducesResult() != rbaseInfo.getProducesResult())
  return {};
if (lbaseInfo.getNoCallerSavedRegs() != rbaseInfo.getNoCallerSavedRegs())
  return {};
if (lbaseInfo.getNoCfCheck() != rbaseInfo.getNoCfCheck())
  return {};

// When merging declarations, it's common for supplemental information like
// attributes to only be present in one of the declarations, and we generally
// want type merging to preserve the union of information.  So a merged
// function type should be noreturn if it was noreturn in *either* operand
// type.
//
// But for the conditional operator, this is backwards.  The result of the
// operator could be either operand, and its type should conservatively
// reflect that.  So a function type in a composite type is noreturn only
// if it's noreturn in *both* operand types.
//
// Arguably, noreturn is a kind of subtype, and the conditional operator
// ought to produce the most specific common supertype of its operand types.
// That would differ from this rule in contravariant positions.  However,
// neither C nor C++ generally uses this kind of subtype reasoning.  Also,
// as a practical matter, it would only affect C code that does abstraction of
// higher-order functions (taking noreturn callbacks!), which is uncommon to
// say the least.  So we use the simpler rule.
bool NoReturn = IsConditionalOperator
                    ? lbaseInfo.getNoReturn() && rbaseInfo.getNoReturn()
                    : lbaseInfo.getNoReturn() || rbaseInfo.getNoReturn();
if (lbaseInfo.getNoReturn() != NoReturn)
  allLTypes = false;
if (rbaseInfo.getNoReturn() != NoReturn)
  allRTypes = false;

FunctionType::ExtInfo einfo = lbaseInfo.withNoReturn(NoReturn);

if (lproto && rproto) { // two C99 style function prototypes
  assert((AllowCXX ||(static_cast <bool> ((AllowCXX || (!lproto->hasExceptionSpec
() && !rproto->hasExceptionSpec())) && "C++ shouldn't be here"
) ? void (0) : __assert_fail ("(AllowCXX || (!lproto->hasExceptionSpec() && !rproto->hasExceptionSpec())) && \"C++ shouldn't be here\""
, "clang/lib/AST/ASTContext.cpp", 10439, __extension__ __PRETTY_FUNCTION__
))
          (!lproto->hasExceptionSpec() && !rproto->hasExceptionSpec())) &&(static_cast <bool> ((AllowCXX || (!lproto->hasExceptionSpec
() && !rproto->hasExceptionSpec())) && "C++ shouldn't be here"
) ? void (0) : __assert_fail ("(AllowCXX || (!lproto->hasExceptionSpec() && !rproto->hasExceptionSpec())) && \"C++ shouldn't be here\""
, "clang/lib/AST/ASTContext.cpp", 10439, __extension__ __PRETTY_FUNCTION__
))
         "C++ shouldn't be here")(static_cast <bool> ((AllowCXX || (!lproto->hasExceptionSpec
() && !rproto->hasExceptionSpec())) && "C++ shouldn't be here"
) ? void (0) : __assert_fail ("(AllowCXX || (!lproto->hasExceptionSpec() && !rproto->hasExceptionSpec())) && \"C++ shouldn't be here\""
, "clang/lib/AST/ASTContext.cpp", 10439, __extension__ __PRETTY_FUNCTION__
));
  // Compatible functions must have the same number of parameters
  if (lproto->getNumParams() != rproto->getNumParams())
    return {};

  // Variadic and non-variadic functions aren't compatible
  if (lproto->isVariadic() != rproto->isVariadic())
    return {};

  if (lproto->getMethodQuals() != rproto->getMethodQuals())
    return {};

  SmallVector<FunctionProtoType::ExtParameterInfo, 4> newParamInfos;
  bool canUseLeft, canUseRight;
  if (!mergeExtParameterInfo(lproto, rproto, canUseLeft, canUseRight,
                             newParamInfos))
    return {};

  if (!canUseLeft)
    allLTypes = false;
  if (!canUseRight)
    allRTypes = false;

  // Check parameter type compatibility
  SmallVector<QualType, 10> types;
  for (unsigned i = 0, n = lproto->getNumParams(); i < n; i++) {
    QualType lParamType = lproto->getParamType(i).getUnqualifiedType();
    QualType rParamType = rproto->getParamType(i).getUnqualifiedType();
    QualType paramType = mergeFunctionParameterTypes(
        lParamType, rParamType, OfBlockPointer, Unqualified);
    if (paramType.isNull())
      return {};

    if (Unqualified)
      paramType = paramType.getUnqualifiedType();

    types.push_back(paramType);
    if (Unqualified) {
      lParamType = lParamType.getUnqualifiedType();
      rParamType = rParamType.getUnqualifiedType();
    }

    if (getCanonicalType(paramType) != getCanonicalType(lParamType))
      allLTypes = false;
    if (getCanonicalType(paramType) != getCanonicalType(rParamType))
      allRTypes = false;
  }

  if (allLTypes) return lhs;
  if (allRTypes) return rhs;

  FunctionProtoType::ExtProtoInfo EPI = lproto->getExtProtoInfo();
  EPI.ExtInfo = einfo;
  EPI.ExtParameterInfos =
      newParamInfos.empty() ? nullptr : newParamInfos.data();
  return getFunctionType(retType, types, EPI);
}

if (lproto) allRTypes = false;
if (rproto) allLTypes = false;

const FunctionProtoType *proto = lproto ? lproto : rproto;
if (proto) {
  assert((AllowCXX || !proto->hasExceptionSpec()) && "C++ shouldn't be here")(static_cast <bool> ((AllowCXX || !proto->hasExceptionSpec
()) && "C++ shouldn't be here") ? void (0) : __assert_fail
 ("(AllowCXX || !proto->hasExceptionSpec()) && \"C++ shouldn't be here\""
, "clang/lib/AST/ASTContext.cpp", 10502, __extension__ __PRETTY_FUNCTION__
));
  if (proto->isVariadic())
    return {};
  // Check that the types are compatible with the types that
  // would result from default argument promotions (C99 6.7.5.3p15).
  // The only types actually affected are promotable integer
  // types and floats, which would be passed as a different
  // type depending on whether the prototype is visible.
  for (unsigned i = 0, n = proto->getNumParams(); i < n; ++i) {
    QualType paramTy = proto->getParamType(i);

    // Look at the converted type of enum types, since that is the type used
    // to pass enum values.
    if (const auto *Enum = paramTy->getAs<EnumType>()) {
      paramTy = Enum->getDecl()->getIntegerType();
      if (paramTy.isNull())
        return {};
    }

    if (isPromotableIntegerType(paramTy) ||
        getCanonicalType(paramTy).getUnqualifiedType() == FloatTy)
      return {};
  }

  if (allLTypes) return lhs;
  if (allRTypes) return rhs;

  FunctionProtoType::ExtProtoInfo EPI = proto->getExtProtoInfo();
  EPI.ExtInfo = einfo;
  return getFunctionType(retType, proto->getParamTypes(), EPI);
}

if (allLTypes) return lhs;
if (allRTypes) return rhs;
return getFunctionNoProtoType(retType, einfo);
10537}

10539/// Given that we have an enum type and a non-enum type, try to merge them.
10540static QualType mergeEnumWithInteger(ASTContext &Context, const EnumType *ET,
                                   QualType other, bool isBlockReturnType) {
// C99 6.7.2.2p4: Each enumerated type shall be compatible with char,
// a signed integer type, or an unsigned integer type.
// Compatibility is based on the underlying type, not the promotion
// type.
QualType underlyingType = ET->getDecl()->getIntegerType();
if (underlyingType.isNull())
  return {};
if (Context.hasSameType(underlyingType, other))
  return other;

// In block return types, we're more permissive and accept any
// integral type of the same size.
if (isBlockReturnType && other->isIntegerType() &&
    Context.getTypeSize(underlyingType) == Context.getTypeSize(other))
  return other;

return {};
10559}

10561QualType ASTContext::mergeTypes(QualType LHS, QualType RHS, bool OfBlockPointer,
                              bool Unqualified, bool BlockReturnType,
                              bool IsConditionalOperator) {
// For C++ we will not reach this code with reference types (see below),
// for OpenMP variant call overloading we might.
//
// C++ [expr]: If an expression initially has the type "reference to T", the
// type is adjusted to "T" prior to any further analysis, the expression
// designates the object or function denoted by the reference, and the
// expression is an lvalue unless the reference is an rvalue reference and
// the expression is a function call (possibly inside parentheses).
auto *LHSRefTy = LHS->getAs<ReferenceType>();
auto *RHSRefTy = RHS->getAs<ReferenceType>();
if (LangOpts.OpenMP && LHSRefTy && RHSRefTy &&
    LHS->getTypeClass() == RHS->getTypeClass())
  return mergeTypes(LHSRefTy->getPointeeType(), RHSRefTy->getPointeeType(),
                    OfBlockPointer, Unqualified, BlockReturnType);
if (LHSRefTy || RHSRefTy)
  return {};

if (Unqualified) {
  LHS = LHS.getUnqualifiedType();
  RHS = RHS.getUnqualifiedType();
}

QualType LHSCan = getCanonicalType(LHS),
         RHSCan = getCanonicalType(RHS);

// If two types are identical, they are compatible.
if (LHSCan == RHSCan)
  return LHS;

// If the qualifiers are different, the types aren't compatible... mostly.
Qualifiers LQuals = LHSCan.getLocalQualifiers();
Qualifiers RQuals = RHSCan.getLocalQualifiers();
if (LQuals != RQuals) {
  // If any of these qualifiers are different, we have a type
  // mismatch.
  if (LQuals.getCVRQualifiers() != RQuals.getCVRQualifiers() ||
      LQuals.getAddressSpace() != RQuals.getAddressSpace() ||
      LQuals.getObjCLifetime() != RQuals.getObjCLifetime() ||
      LQuals.hasUnaligned() != RQuals.hasUnaligned())
    return {};

  // Exactly one GC qualifier difference is allowed: __strong is
  // okay if the other type has no GC qualifier but is an Objective
  // C object pointer (i.e. implicitly strong by default).  We fix
  // this by pretending that the unqualified type was actually
  // qualified __strong.
  Qualifiers::GC GC_L = LQuals.getObjCGCAttr();
  Qualifiers::GC GC_R = RQuals.getObjCGCAttr();
  assert((GC_L != GC_R) && "unequal qualifier sets had only equal elements")(static_cast <bool> ((GC_L != GC_R) && "unequal qualifier sets had only equal elements"
) ? void (0) : __assert_fail ("(GC_L != GC_R) && \"unequal qualifier sets had only equal elements\""
, "clang/lib/AST/ASTContext.cpp", 10612, __extension__ __PRETTY_FUNCTION__
));

  if (GC_L == Qualifiers::Weak || GC_R == Qualifiers::Weak)
    return {};

  if (GC_L == Qualifiers::Strong && RHSCan->isObjCObjectPointerType()) {
    return mergeTypes(LHS, getObjCGCQualType(RHS, Qualifiers::Strong));
  }
  if (GC_R == Qualifiers::Strong && LHSCan->isObjCObjectPointerType()) {
    return mergeTypes(getObjCGCQualType(LHS, Qualifiers::Strong), RHS);
  }
  return {};
}

// Okay, qualifiers are equal.

Type::TypeClass LHSClass = LHSCan->getTypeClass();
Type::TypeClass RHSClass = RHSCan->getTypeClass();

// We want to consider the two function types to be the same for these
// comparisons, just force one to the other.
if (LHSClass == Type::FunctionProto) LHSClass = Type::FunctionNoProto;
if (RHSClass == Type::FunctionProto) RHSClass = Type::FunctionNoProto;

// Same as above for arrays
if (LHSClass == Type::VariableArray || LHSClass == Type::IncompleteArray)
  LHSClass = Type::ConstantArray;
if (RHSClass == Type::VariableArray || RHSClass == Type::IncompleteArray)
  RHSClass = Type::ConstantArray;

// ObjCInterfaces are just specialized ObjCObjects.
if (LHSClass == Type::ObjCInterface) LHSClass = Type::ObjCObject;
if (RHSClass == Type::ObjCInterface) RHSClass = Type::ObjCObject;

// Canonicalize ExtVector -> Vector.
if (LHSClass == Type::ExtVector) LHSClass = Type::Vector;
if (RHSClass == Type::ExtVector) RHSClass = Type::Vector;

// If the canonical type classes don't match.
if (LHSClass != RHSClass) {
  // Note that we only have special rules for turning block enum
  // returns into block int returns, not vice-versa.
  if (const auto *ETy = LHS->getAs<EnumType>()) {
    return mergeEnumWithInteger(*this, ETy, RHS, false);
  }
  if (const EnumType* ETy = RHS->getAs<EnumType>()) {
    return mergeEnumWithInteger(*this, ETy, LHS, BlockReturnType);
  }
  // allow block pointer type to match an 'id' type.
  if (OfBlockPointer && !BlockReturnType) {
     if (LHS->isObjCIdType() && RHS->isBlockPointerType())
       return LHS;
    if (RHS->isObjCIdType() && LHS->isBlockPointerType())
      return RHS;
  }
  // Allow __auto_type to match anything; it merges to the type with more
  // information.
  if (const auto *AT = LHS->getAs<AutoType>()) {
    if (!AT->isDeduced() && AT->isGNUAutoType())
      return RHS;
  }
  if (const auto *AT = RHS->getAs<AutoType>()) {
    if (!AT->isDeduced() && AT->isGNUAutoType())
      return LHS;
  }
  return {};
}

// The canonical type classes match.
switch (LHSClass) {
10682#define TYPE(Class, Base)
10683#define ABSTRACT_TYPE(Class, Base)
10684#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) case Type::Class:
10685#define NON_CANONICAL_TYPE(Class, Base) case Type::Class:
10686#define DEPENDENT_TYPE(Class, Base) case Type::Class:
10687#include "clang/AST/TypeNodes.inc"
  llvm_unreachable("Non-canonical and dependent types shouldn't get here")::llvm::llvm_unreachable_internal("Non-canonical and dependent types shouldn't get here"
, "clang/lib/AST/ASTContext.cpp", 10688);

case Type::Auto:
case Type::DeducedTemplateSpecialization:
case Type::LValueReference:
case Type::RValueReference:
case Type::MemberPointer:
  llvm_unreachable("C++ should never be in mergeTypes")::llvm::llvm_unreachable_internal("C++ should never be in mergeTypes"
, "clang/lib/AST/ASTContext.cpp", 10695);

case Type::ObjCInterface:
case Type::IncompleteArray:
case Type::VariableArray:
case Type::FunctionProto:
case Type::ExtVector:
  llvm_unreachable("Types are eliminated above")::llvm::llvm_unreachable_internal("Types are eliminated above"
, "clang/lib/AST/ASTContext.cpp", 10702);

case Type::Pointer:
{
  // Merge two pointer types, while trying to preserve typedef info
  QualType LHSPointee = LHS->castAs<PointerType>()->getPointeeType();
  QualType RHSPointee = RHS->castAs<PointerType>()->getPointeeType();
  if (Unqualified) {
    LHSPointee = LHSPointee.getUnqualifiedType();
    RHSPointee = RHSPointee.getUnqualifiedType();
  }
  QualType ResultType = mergeTypes(LHSPointee, RHSPointee, false,
                                   Unqualified);
  if (ResultType.isNull())
    return {};
  if (getCanonicalType(LHSPointee) == getCanonicalType(ResultType))
    return LHS;
  if (getCanonicalType(RHSPointee) == getCanonicalType(ResultType))
    return RHS;
  return getPointerType(ResultType);
}
case Type::BlockPointer:
{
  // Merge two block pointer types, while trying to preserve typedef info
  QualType LHSPointee = LHS->castAs<BlockPointerType>()->getPointeeType();
  QualType RHSPointee = RHS->castAs<BlockPointerType>()->getPointeeType();
  if (Unqualified) {
    LHSPointee = LHSPointee.getUnqualifiedType();
    RHSPointee = RHSPointee.getUnqualifiedType();
  }
  if (getLangOpts().OpenCL) {
    Qualifiers LHSPteeQual = LHSPointee.getQualifiers();
    Qualifiers RHSPteeQual = RHSPointee.getQualifiers();
    // Blocks can't be an expression in a ternary operator (OpenCL v2.0
    // 6.12.5) thus the following check is asymmetric.
    if (!LHSPteeQual.isAddressSpaceSupersetOf(RHSPteeQual))
      return {};
    LHSPteeQual.removeAddressSpace();
    RHSPteeQual.removeAddressSpace();
    LHSPointee =
        QualType(LHSPointee.getTypePtr(), LHSPteeQual.getAsOpaqueValue());
    RHSPointee =
        QualType(RHSPointee.getTypePtr(), RHSPteeQual.getAsOpaqueValue());
  }
  QualType ResultType = mergeTypes(LHSPointee, RHSPointee, OfBlockPointer,
                                   Unqualified);
  if (ResultType.isNull())
    return {};
  if (getCanonicalType(LHSPointee) == getCanonicalType(ResultType))
    return LHS;
  if (getCanonicalType(RHSPointee) == getCanonicalType(ResultType))
    return RHS;
  return getBlockPointerType(ResultType);
}
case Type::Atomic:
{
  // Merge two pointer types, while trying to preserve typedef info
  QualType LHSValue = LHS->castAs<AtomicType>()->getValueType();
  QualType RHSValue = RHS->castAs<AtomicType>()->getValueType();
  if (Unqualified) {
    LHSValue = LHSValue.getUnqualifiedType();
    RHSValue = RHSValue.getUnqualifiedType();
  }
  QualType ResultType = mergeTypes(LHSValue, RHSValue, false,
                                   Unqualified);
  if (ResultType.isNull())
    return {};
  if (getCanonicalType(LHSValue) == getCanonicalType(ResultType))
    return LHS;
  if (getCanonicalType(RHSValue) == getCanonicalType(ResultType))
    return RHS;
  return getAtomicType(ResultType);
}
case Type::ConstantArray:
{
  const ConstantArrayType* LCAT = getAsConstantArrayType(LHS);
  const ConstantArrayType* RCAT = getAsConstantArrayType(RHS);
  if (LCAT && RCAT && RCAT->getSize() != LCAT->getSize())
    return {};

  QualType LHSElem = getAsArrayType(LHS)->getElementType();
  QualType RHSElem = getAsArrayType(RHS)->getElementType();
  if (Unqualified) {
    LHSElem = LHSElem.getUnqualifiedType();
    RHSElem = RHSElem.getUnqualifiedType();
  }

  QualType ResultType = mergeTypes(LHSElem, RHSElem, false, Unqualified);
  if (ResultType.isNull())
    return {};

  const VariableArrayType* LVAT = getAsVariableArrayType(LHS);
  const VariableArrayType* RVAT = getAsVariableArrayType(RHS);

  // If either side is a variable array, and both are complete, check whether
  // the current dimension is definite.
  if (LVAT || RVAT) {
    auto SizeFetch = [this](const VariableArrayType* VAT,
        const ConstantArrayType* CAT)
        -> std::pair<bool,llvm::APInt> {
      if (VAT) {
        std::optional<llvm::APSInt> TheInt;
        Expr *E = VAT->getSizeExpr();
        if (E && (TheInt = E->getIntegerConstantExpr(*this)))
          return std::make_pair(true, *TheInt);
        return std::make_pair(false, llvm::APSInt());
      }
      if (CAT)
        return std::make_pair(true, CAT->getSize());
      return std::make_pair(false, llvm::APInt());
    };

    bool HaveLSize, HaveRSize;
    llvm::APInt LSize, RSize;
    std::tie(HaveLSize, LSize) = SizeFetch(LVAT, LCAT);
    std::tie(HaveRSize, RSize) = SizeFetch(RVAT, RCAT);
    if (HaveLSize && HaveRSize && !llvm::APInt::isSameValue(LSize, RSize))
      return {}; // Definite, but unequal, array dimension
  }

  if (LCAT && getCanonicalType(LHSElem) == getCanonicalType(ResultType))
    return LHS;
  if (RCAT && getCanonicalType(RHSElem) == getCanonicalType(ResultType))
    return RHS;
  if (LCAT)
    return getConstantArrayType(ResultType, LCAT->getSize(),
                                LCAT->getSizeExpr(),
                                ArrayType::ArraySizeModifier(), 0);
  if (RCAT)
    return getConstantArrayType(ResultType, RCAT->getSize(),
                                RCAT->getSizeExpr(),
                                ArrayType::ArraySizeModifier(), 0);
  if (LVAT && getCanonicalType(LHSElem) == getCanonicalType(ResultType))
    return LHS;
  if (RVAT && getCanonicalType(RHSElem) == getCanonicalType(ResultType))
    return RHS;
  if (LVAT) {
    // FIXME: This isn't correct! But tricky to implement because
    // the array's size has to be the size of LHS, but the type
    // has to be different.
    return LHS;
  }
  if (RVAT) {
    // FIXME: This isn't correct! But tricky to implement because
    // the array's size has to be the size of RHS, but the type
    // has to be different.
    return RHS;
  }
  if (getCanonicalType(LHSElem) == getCanonicalType(ResultType)) return LHS;
  if (getCanonicalType(RHSElem) == getCanonicalType(ResultType)) return RHS;
  return getIncompleteArrayType(ResultType,
                                ArrayType::ArraySizeModifier(), 0);
}
case Type::FunctionNoProto:
  return mergeFunctionTypes(LHS, RHS, OfBlockPointer, Unqualified,
                            /*AllowCXX=*/false, IsConditionalOperator);
case Type::Record:
case Type::Enum:
  return {};
case Type::Builtin:
  // Only exactly equal builtin types are compatible, which is tested above.
  return {};
case Type::Complex:
  // Distinct complex types are incompatible.
  return {};
case Type::Vector:
  // FIXME: The merged type should be an ExtVector!
  if (areCompatVectorTypes(LHSCan->castAs<VectorType>(),
                           RHSCan->castAs<VectorType>()))
    return LHS;
  return {};
case Type::ConstantMatrix:
  if (areCompatMatrixTypes(LHSCan->castAs<ConstantMatrixType>(),
                           RHSCan->castAs<ConstantMatrixType>()))
    return LHS;
  return {};
case Type::ObjCObject: {
  // Check if the types are assignment compatible.
  // FIXME: This should be type compatibility, e.g. whether
  // "LHS x; RHS x;" at global scope is legal.
  if (canAssignObjCInterfaces(LHS->castAs<ObjCObjectType>(),
                              RHS->castAs<ObjCObjectType>()))
    return LHS;
  return {};
}
case Type::ObjCObjectPointer:
  if (OfBlockPointer) {
    if (canAssignObjCInterfacesInBlockPointer(
            LHS->castAs<ObjCObjectPointerType>(),
            RHS->castAs<ObjCObjectPointerType>(), BlockReturnType))
      return LHS;
    return {};
  }
  if (canAssignObjCInterfaces(LHS->castAs<ObjCObjectPointerType>(),
                              RHS->castAs<ObjCObjectPointerType>()))
    return LHS;
  return {};
case Type::Pipe:
  assert(LHS != RHS &&(static_cast <bool> (LHS != RHS && "Equivalent pipe types should have already been handled!"
) ? void (0) : __assert_fail ("LHS != RHS && \"Equivalent pipe types should have already been handled!\""
, "clang/lib/AST/ASTContext.cpp", 10901, __extension__ __PRETTY_FUNCTION__
))
         "Equivalent pipe types should have already been handled!")(static_cast <bool> (LHS != RHS && "Equivalent pipe types should have already been handled!"
) ? void (0) : __assert_fail ("LHS != RHS && \"Equivalent pipe types should have already been handled!\""
, "clang/lib/AST/ASTContext.cpp", 10901, __extension__ __PRETTY_FUNCTION__
));
  return {};
case Type::BitInt: {
  // Merge two bit-precise int types, while trying to preserve typedef info.
  bool LHSUnsigned = LHS->castAs<BitIntType>()->isUnsigned();
  bool RHSUnsigned = RHS->castAs<BitIntType>()->isUnsigned();
  unsigned LHSBits = LHS->castAs<BitIntType>()->getNumBits();
  unsigned RHSBits = RHS->castAs<BitIntType>()->getNumBits();

  // Like unsigned/int, shouldn't have a type if they don't match.
  if (LHSUnsigned != RHSUnsigned)
    return {};

  if (LHSBits != RHSBits)
    return {};
  return LHS;
}
}

llvm_unreachable("Invalid Type::Class!")::llvm::llvm_unreachable_internal("Invalid Type::Class!", "clang/lib/AST/ASTContext.cpp"
, 10920);
10921}

10923bool ASTContext::mergeExtParameterInfo(
  const FunctionProtoType *FirstFnType, const FunctionProtoType *SecondFnType,
  bool &CanUseFirst, bool &CanUseSecond,
  SmallVectorImpl<FunctionProtoType::ExtParameterInfo> &NewParamInfos) {
assert(NewParamInfos.empty() && "param info list not empty")(static_cast <bool> (NewParamInfos.empty() && "param info list not empty"
) ? void (0) : __assert_fail ("NewParamInfos.empty() && \"param info list not empty\""
, "clang/lib/AST/ASTContext.cpp", 10927, __extension__ __PRETTY_FUNCTION__
));
CanUseFirst = CanUseSecond = true;
bool FirstHasInfo = FirstFnType->hasExtParameterInfos();
bool SecondHasInfo = SecondFnType->hasExtParameterInfos();

// Fast path: if the first type doesn't have ext parameter infos,
// we match if and only if the second type also doesn't have them.
if (!FirstHasInfo && !SecondHasInfo)
  return true;

bool NeedParamInfo = false;
size_t E = FirstHasInfo ? FirstFnType->getExtParameterInfos().size()
                        : SecondFnType->getExtParameterInfos().size();

for (size_t I = 0; I < E; ++I) {
  FunctionProtoType::ExtParameterInfo FirstParam, SecondParam;
  if (FirstHasInfo)
    FirstParam = FirstFnType->getExtParameterInfo(I);
  if (SecondHasInfo)
    SecondParam = SecondFnType->getExtParameterInfo(I);

  // Cannot merge unless everything except the noescape flag matches.
  if (FirstParam.withIsNoEscape(false) != SecondParam.withIsNoEscape(false))
    return false;

  bool FirstNoEscape = FirstParam.isNoEscape();
  bool SecondNoEscape = SecondParam.isNoEscape();
  bool IsNoEscape = FirstNoEscape && SecondNoEscape;
  NewParamInfos.push_back(FirstParam.withIsNoEscape(IsNoEscape));
  if (NewParamInfos.back().getOpaqueValue())
    NeedParamInfo = true;
  if (FirstNoEscape != IsNoEscape)
    CanUseFirst = false;
  if (SecondNoEscape != IsNoEscape)
    CanUseSecond = false;
}

if (!NeedParamInfo)
  NewParamInfos.clear();

return true;
10968}

10970void ASTContext::ResetObjCLayout(const ObjCContainerDecl *CD) {
ObjCLayouts[CD] = nullptr;
10972}

10974/// mergeObjCGCQualifiers - This routine merges ObjC's GC attribute of 'LHS' and
10975/// 'RHS' attributes and returns the merged version; including for function
10976/// return types.
10977QualType ASTContext::mergeObjCGCQualifiers(QualType LHS, QualType RHS) {
QualType LHSCan = getCanonicalType(LHS),
RHSCan = getCanonicalType(RHS);
// If two types are identical, they are compatible.
if (LHSCan == RHSCan)
  return LHS;
if (RHSCan->isFunctionType()) {
  if (!LHSCan->isFunctionType())
    return {};
  QualType OldReturnType =
      cast<FunctionType>(RHSCan.getTypePtr())->getReturnType();
  QualType NewReturnType =
      cast<FunctionType>(LHSCan.getTypePtr())->getReturnType();
  QualType ResReturnType =
    mergeObjCGCQualifiers(NewReturnType, OldReturnType);
  if (ResReturnType.isNull())
    return {};
  if (ResReturnType == NewReturnType || ResReturnType == OldReturnType) {
    // id foo(); ... __strong id foo(); or: __strong id foo(); ... id foo();
    // In either case, use OldReturnType to build the new function type.
    const auto *F = LHS->castAs<FunctionType>();
    if (const auto *FPT = cast<FunctionProtoType>(F)) {
      FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo();
      EPI.ExtInfo = getFunctionExtInfo(LHS);
      QualType ResultType =
          getFunctionType(OldReturnType, FPT->getParamTypes(), EPI);
      return ResultType;
    }
  }
  return {};
}

// If the qualifiers are different, the types can still be merged.
Qualifiers LQuals = LHSCan.getLocalQualifiers();
Qualifiers RQuals = RHSCan.getLocalQualifiers();
if (LQuals != RQuals) {
  // If any of these qualifiers are different, we have a type mismatch.
  if (LQuals.getCVRQualifiers() != RQuals.getCVRQualifiers() ||
      LQuals.getAddressSpace() != RQuals.getAddressSpace())
    return {};

  // Exactly one GC qualifier difference is allowed: __strong is
  // okay if the other type has no GC qualifier but is an Objective
  // C object pointer (i.e. implicitly strong by default).  We fix
  // this by pretending that the unqualified type was actually
  // qualified __strong.
  Qualifiers::GC GC_L = LQuals.getObjCGCAttr();
  Qualifiers::GC GC_R = RQuals.getObjCGCAttr();
  assert((GC_L != GC_R) && "unequal qualifier sets had only equal elements")(static_cast <bool> ((GC_L != GC_R) && "unequal qualifier sets had only equal elements"
) ? void (0) : __assert_fail ("(GC_L != GC_R) && \"unequal qualifier sets had only equal elements\""
, "clang/lib/AST/ASTContext.cpp", 11025, __extension__ __PRETTY_FUNCTION__
));

  if (GC_L == Qualifiers::Weak || GC_R == Qualifiers::Weak)
    return {};

  if (GC_L == Qualifiers::Strong)
    return LHS;
  if (GC_R == Qualifiers::Strong)
    return RHS;
  return {};
}

if (LHSCan->isObjCObjectPointerType() && RHSCan->isObjCObjectPointerType()) {
  QualType LHSBaseQT = LHS->castAs<ObjCObjectPointerType>()->getPointeeType();
  QualType RHSBaseQT = RHS->castAs<ObjCObjectPointerType>()->getPointeeType();
  QualType ResQT = mergeObjCGCQualifiers(LHSBaseQT, RHSBaseQT);
  if (ResQT == LHSBaseQT)
    return LHS;
  if (ResQT == RHSBaseQT)
    return RHS;
}
return {};
11047}

11049//===----------------------------------------------------------------------===//
11050//                         Integer Predicates
11051//===----------------------------------------------------------------------===//

11053unsigned ASTContext::getIntWidth(QualType T) const {
if (const auto *ET = T->getAs<EnumType>())
  T = ET->getDecl()->getIntegerType();
if (T->isBooleanType())
  return 1;
if (const auto *EIT = T->getAs<BitIntType>())
  return EIT->getNumBits();
// For builtin types, just use the standard type sizing method
return (unsigned)getTypeSize(T);
11062}

11064QualType ASTContext::getCorrespondingUnsignedType(QualType T) const {
assert((T->hasIntegerRepresentation() || T->isEnumeralType() ||(static_cast <bool> ((T->hasIntegerRepresentation() ||
 T->isEnumeralType() || T->isFixedPointType()) &&
 "Unexpected type") ? void (0) : __assert_fail ("(T->hasIntegerRepresentation() || T->isEnumeralType() || T->isFixedPointType()) && \"Unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 11067, __extension__ __PRETTY_FUNCTION__
))
        T->isFixedPointType()) &&(static_cast <bool> ((T->hasIntegerRepresentation() ||
 T->isEnumeralType() || T->isFixedPointType()) &&
 "Unexpected type") ? void (0) : __assert_fail ("(T->hasIntegerRepresentation() || T->isEnumeralType() || T->isFixedPointType()) && \"Unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 11067, __extension__ __PRETTY_FUNCTION__
))
       "Unexpected type")(static_cast <bool> ((T->hasIntegerRepresentation() ||
 T->isEnumeralType() || T->isFixedPointType()) &&
 "Unexpected type") ? void (0) : __assert_fail ("(T->hasIntegerRepresentation() || T->isEnumeralType() || T->isFixedPointType()) && \"Unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 11067, __extension__ __PRETTY_FUNCTION__
));

// Turn <4 x signed int> -> <4 x unsigned int>
if (const auto *VTy = T->getAs<VectorType>())
  return getVectorType(getCorrespondingUnsignedType(VTy->getElementType()),
                       VTy->getNumElements(), VTy->getVectorKind());

// For _BitInt, return an unsigned _BitInt with same width.
if (const auto *EITy = T->getAs<BitIntType>())
  return getBitIntType(/*Unsigned=*/true, EITy->getNumBits());

// For enums, get the underlying integer type of the enum, and let the general
// integer type signchanging code handle it.
if (const auto *ETy = T->getAs<EnumType>())
  T = ETy->getDecl()->getIntegerType();

switch (T->castAs<BuiltinType>()->getKind()) {
case BuiltinType::Char_U:
  // Plain `char` is mapped to `unsigned char` even if it's already unsigned
case BuiltinType::Char_S:
case BuiltinType::SChar:
case BuiltinType::Char8:
  return UnsignedCharTy;
case BuiltinType::Short:
  return UnsignedShortTy;
case BuiltinType::Int:
  return UnsignedIntTy;
case BuiltinType::Long:
  return UnsignedLongTy;
case BuiltinType::LongLong:
  return UnsignedLongLongTy;
case BuiltinType::Int128:
  return UnsignedInt128Ty;
// wchar_t is special. It is either signed or not, but when it's signed,
// there's no matching "unsigned wchar_t". Therefore we return the unsigned
// version of its underlying type instead.
case BuiltinType::WChar_S:
  return getUnsignedWCharType();

case BuiltinType::ShortAccum:
  return UnsignedShortAccumTy;
case BuiltinType::Accum:
  return UnsignedAccumTy;
case BuiltinType::LongAccum:
  return UnsignedLongAccumTy;
case BuiltinType::SatShortAccum:
  return SatUnsignedShortAccumTy;
case BuiltinType::SatAccum:
  return SatUnsignedAccumTy;
case BuiltinType::SatLongAccum:
  return SatUnsignedLongAccumTy;
case BuiltinType::ShortFract:
  return UnsignedShortFractTy;
case BuiltinType::Fract:
  return UnsignedFractTy;
case BuiltinType::LongFract:
  return UnsignedLongFractTy;
case BuiltinType::SatShortFract:
  return SatUnsignedShortFractTy;
case BuiltinType::SatFract:
  return SatUnsignedFractTy;
case BuiltinType::SatLongFract:
  return SatUnsignedLongFractTy;
default:
  assert((T->hasUnsignedIntegerRepresentation() ||(static_cast <bool> ((T->hasUnsignedIntegerRepresentation
() || T->isUnsignedFixedPointType()) && "Unexpected signed integer or fixed point type"
) ? void (0) : __assert_fail ("(T->hasUnsignedIntegerRepresentation() || T->isUnsignedFixedPointType()) && \"Unexpected signed integer or fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 11133, __extension__ __PRETTY_FUNCTION__
))
          T->isUnsignedFixedPointType()) &&(static_cast <bool> ((T->hasUnsignedIntegerRepresentation
() || T->isUnsignedFixedPointType()) && "Unexpected signed integer or fixed point type"
) ? void (0) : __assert_fail ("(T->hasUnsignedIntegerRepresentation() || T->isUnsignedFixedPointType()) && \"Unexpected signed integer or fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 11133, __extension__ __PRETTY_FUNCTION__
))
         "Unexpected signed integer or fixed point type")(static_cast <bool> ((T->hasUnsignedIntegerRepresentation
() || T->isUnsignedFixedPointType()) && "Unexpected signed integer or fixed point type"
) ? void (0) : __assert_fail ("(T->hasUnsignedIntegerRepresentation() || T->isUnsignedFixedPointType()) && \"Unexpected signed integer or fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 11133, __extension__ __PRETTY_FUNCTION__
));
  return T;
}
11136}

11138QualType ASTContext::getCorrespondingSignedType(QualType T) const {
assert((T->hasIntegerRepresentation() || T->isEnumeralType() ||(static_cast <bool> ((T->hasIntegerRepresentation() ||
 T->isEnumeralType() || T->isFixedPointType()) &&
 "Unexpected type") ? void (0) : __assert_fail ("(T->hasIntegerRepresentation() || T->isEnumeralType() || T->isFixedPointType()) && \"Unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 11141, __extension__ __PRETTY_FUNCTION__
))
1
Assuming the condition is false→
2
←
'?' condition is true→
        T->isFixedPointType()) &&(static_cast <bool> ((T->hasIntegerRepresentation() ||
 T->isEnumeralType() || T->isFixedPointType()) &&
 "Unexpected type") ? void (0) : __assert_fail ("(T->hasIntegerRepresentation() || T->isEnumeralType() || T->isFixedPointType()) && \"Unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 11141, __extension__ __PRETTY_FUNCTION__
))
       "Unexpected type")(static_cast <bool> ((T->hasIntegerRepresentation() ||
 T->isEnumeralType() || T->isFixedPointType()) &&
 "Unexpected type") ? void (0) : __assert_fail ("(T->hasIntegerRepresentation() || T->isEnumeralType() || T->isFixedPointType()) && \"Unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 11141, __extension__ __PRETTY_FUNCTION__
));

// Turn <4 x unsigned int> -> <4 x signed int>
if (const auto *VTy = T->getAs<VectorType>())
3
←
Assuming the object is a 'const class clang::VectorType *'→
4
←
Assuming 'VTy' is non-null→
5
←
Taking true branch→
  return getVectorType(getCorrespondingSignedType(VTy->getElementType()),
6
←
Calling 'ASTContext::getVectorType'→
                       VTy->getNumElements(), VTy->getVectorKind());

// For _BitInt, return a signed _BitInt with same width.
if (const auto *EITy = T->getAs<BitIntType>())
  return getBitIntType(/*Unsigned=*/false, EITy->getNumBits());

// For enums, get the underlying integer type of the enum, and let the general
// integer type signchanging code handle it.
if (const auto *ETy = T->getAs<EnumType>())
  T = ETy->getDecl()->getIntegerType();

switch (T->castAs<BuiltinType>()->getKind()) {
case BuiltinType::Char_S:
  // Plain `char` is mapped to `signed char` even if it's already signed
case BuiltinType::Char_U:
case BuiltinType::UChar:
case BuiltinType::Char8:
  return SignedCharTy;
case BuiltinType::UShort:
  return ShortTy;
case BuiltinType::UInt:
  return IntTy;
case BuiltinType::ULong:
  return LongTy;
case BuiltinType::ULongLong:
  return LongLongTy;
case BuiltinType::UInt128:
  return Int128Ty;
// wchar_t is special. It is either unsigned or not, but when it's unsigned,
// there's no matching "signed wchar_t". Therefore we return the signed
// version of its underlying type instead.
case BuiltinType::WChar_U:
  return getSignedWCharType();

case BuiltinType::UShortAccum:
  return ShortAccumTy;
case BuiltinType::UAccum:
  return AccumTy;
case BuiltinType::ULongAccum:
  return LongAccumTy;
case BuiltinType::SatUShortAccum:
  return SatShortAccumTy;
case BuiltinType::SatUAccum:
  return SatAccumTy;
case BuiltinType::SatULongAccum:
  return SatLongAccumTy;
case BuiltinType::UShortFract:
  return ShortFractTy;
case BuiltinType::UFract:
  return FractTy;
case BuiltinType::ULongFract:
  return LongFractTy;
case BuiltinType::SatUShortFract:
  return SatShortFractTy;
case BuiltinType::SatUFract:
  return SatFractTy;
case BuiltinType::SatULongFract:
  return SatLongFractTy;
default:
  assert((static_cast <bool> ((T->hasSignedIntegerRepresentation
() || T->isSignedFixedPointType()) && "Unexpected signed integer or fixed point type"
) ? void (0) : __assert_fail ("(T->hasSignedIntegerRepresentation() || T->isSignedFixedPointType()) && \"Unexpected signed integer or fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 11207, __extension__ __PRETTY_FUNCTION__
))
      (T->hasSignedIntegerRepresentation() || T->isSignedFixedPointType()) &&(static_cast <bool> ((T->hasSignedIntegerRepresentation
() || T->isSignedFixedPointType()) && "Unexpected signed integer or fixed point type"
) ? void (0) : __assert_fail ("(T->hasSignedIntegerRepresentation() || T->isSignedFixedPointType()) && \"Unexpected signed integer or fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 11207, __extension__ __PRETTY_FUNCTION__
))
      "Unexpected signed integer or fixed point type")(static_cast <bool> ((T->hasSignedIntegerRepresentation
() || T->isSignedFixedPointType()) && "Unexpected signed integer or fixed point type"
) ? void (0) : __assert_fail ("(T->hasSignedIntegerRepresentation() || T->isSignedFixedPointType()) && \"Unexpected signed integer or fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 11207, __extension__ __PRETTY_FUNCTION__
));
  return T;
}
11210}

11212ASTMutationListener::~ASTMutationListener() = default;

11214void ASTMutationListener::DeducedReturnType(const FunctionDecl *FD,
                                          QualType ReturnType) {}

11217//===----------------------------------------------------------------------===//
11218//                          Builtin Type Computation
11219//===----------------------------------------------------------------------===//

11221/// DecodeTypeFromStr - This decodes one type descriptor from Str, advancing the
11222/// pointer over the consumed characters.  This returns the resultant type.  If
11223/// AllowTypeModifiers is false then modifier like * are not parsed, just basic
11224/// types.  This allows "v2i*" to be parsed as a pointer to a v2i instead of
11225/// a vector of "i*".
11226///
11227/// RequiresICE is filled in on return to indicate whether the value is required
11228/// to be an Integer Constant Expression.
11229static QualType DecodeTypeFromStr(const char *&Str, const ASTContext &Context,
                                ASTContext::GetBuiltinTypeError &Error,
                                bool &RequiresICE,
                                bool AllowTypeModifiers) {
// Modifiers.
int HowLong = 0;
bool Signed = false, Unsigned = false;
RequiresICE = false;

// Read the prefixed modifiers first.
bool Done = false;
#ifndef NDEBUG
bool IsSpecial = false;
#endif
while (!Done) {
  switch (*Str++) {
  default: Done = true; --Str; break;
  case 'I':
    RequiresICE = true;
    break;
  case 'S':
    assert(!Unsigned && "Can't use both 'S' and 'U' modifiers!")(static_cast <bool> (!Unsigned && "Can't use both 'S' and 'U' modifiers!"
) ? void (0) : __assert_fail ("!Unsigned && \"Can't use both 'S' and 'U' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11250, __extension__ __PRETTY_FUNCTION__
));
    assert(!Signed && "Can't use 'S' modifier multiple times!")(static_cast <bool> (!Signed && "Can't use 'S' modifier multiple times!"
) ? void (0) : __assert_fail ("!Signed && \"Can't use 'S' modifier multiple times!\""
, "clang/lib/AST/ASTContext.cpp", 11251, __extension__ __PRETTY_FUNCTION__
));
    Signed = true;
    break;
  case 'U':
    assert(!Signed && "Can't use both 'S' and 'U' modifiers!")(static_cast <bool> (!Signed && "Can't use both 'S' and 'U' modifiers!"
) ? void (0) : __assert_fail ("!Signed && \"Can't use both 'S' and 'U' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11255, __extension__ __PRETTY_FUNCTION__
));
    assert(!Unsigned && "Can't use 'U' modifier multiple times!")(static_cast <bool> (!Unsigned && "Can't use 'U' modifier multiple times!"
) ? void (0) : __assert_fail ("!Unsigned && \"Can't use 'U' modifier multiple times!\""
, "clang/lib/AST/ASTContext.cpp", 11256, __extension__ __PRETTY_FUNCTION__
));
    Unsigned = true;
    break;
  case 'L':
    assert(!IsSpecial && "Can't use 'L' with 'W', 'N', 'Z' or 'O' modifiers")(static_cast <bool> (!IsSpecial && "Can't use 'L' with 'W', 'N', 'Z' or 'O' modifiers"
) ? void (0) : __assert_fail ("!IsSpecial && \"Can't use 'L' with 'W', 'N', 'Z' or 'O' modifiers\""
, "clang/lib/AST/ASTContext.cpp", 11260, __extension__ __PRETTY_FUNCTION__
));
    assert(HowLong <= 2 && "Can't have LLLL modifier")(static_cast <bool> (HowLong <= 2 && "Can't have LLLL modifier"
) ? void (0) : __assert_fail ("HowLong <= 2 && \"Can't have LLLL modifier\""
, "clang/lib/AST/ASTContext.cpp", 11261, __extension__ __PRETTY_FUNCTION__
));
    ++HowLong;
    break;
  case 'N':
    // 'N' behaves like 'L' for all non LP64 targets and 'int' otherwise.
    assert(!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!")(static_cast <bool> (!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!"
) ? void (0) : __assert_fail ("!IsSpecial && \"Can't use two 'N', 'W', 'Z' or 'O' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11266, __extension__ __PRETTY_FUNCTION__
));
    assert(HowLong == 0 && "Can't use both 'L' and 'N' modifiers!")(static_cast <bool> (HowLong == 0 && "Can't use both 'L' and 'N' modifiers!"
) ? void (0) : __assert_fail ("HowLong == 0 && \"Can't use both 'L' and 'N' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11267, __extension__ __PRETTY_FUNCTION__
));
    #ifndef NDEBUG
    IsSpecial = true;
    #endif
    if (Context.getTargetInfo().getLongWidth() == 32)
      ++HowLong;
    break;
  case 'W':
    // This modifier represents int64 type.
    assert(!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!")(static_cast <bool> (!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!"
) ? void (0) : __assert_fail ("!IsSpecial && \"Can't use two 'N', 'W', 'Z' or 'O' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11276, __extension__ __PRETTY_FUNCTION__
));
    assert(HowLong == 0 && "Can't use both 'L' and 'W' modifiers!")(static_cast <bool> (HowLong == 0 && "Can't use both 'L' and 'W' modifiers!"
) ? void (0) : __assert_fail ("HowLong == 0 && \"Can't use both 'L' and 'W' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11277, __extension__ __PRETTY_FUNCTION__
));
    #ifndef NDEBUG
    IsSpecial = true;
    #endif
    switch (Context.getTargetInfo().getInt64Type()) {
    default:
      llvm_unreachable("Unexpected integer type")::llvm::llvm_unreachable_internal("Unexpected integer type", "clang/lib/AST/ASTContext.cpp"
, 11283);
    case TargetInfo::SignedLong:
      HowLong = 1;
      break;
    case TargetInfo::SignedLongLong:
      HowLong = 2;
      break;
    }
    break;
  case 'Z':
    // This modifier represents int32 type.
    assert(!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!")(static_cast <bool> (!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!"
) ? void (0) : __assert_fail ("!IsSpecial && \"Can't use two 'N', 'W', 'Z' or 'O' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11294, __extension__ __PRETTY_FUNCTION__
));
    assert(HowLong == 0 && "Can't use both 'L' and 'Z' modifiers!")(static_cast <bool> (HowLong == 0 && "Can't use both 'L' and 'Z' modifiers!"
) ? void (0) : __assert_fail ("HowLong == 0 && \"Can't use both 'L' and 'Z' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11295, __extension__ __PRETTY_FUNCTION__
));
    #ifndef NDEBUG
    IsSpecial = true;
    #endif
    switch (Context.getTargetInfo().getIntTypeByWidth(32, true)) {
    default:
      llvm_unreachable("Unexpected integer type")::llvm::llvm_unreachable_internal("Unexpected integer type", "clang/lib/AST/ASTContext.cpp"
, 11301);
    case TargetInfo::SignedInt:
      HowLong = 0;
      break;
    case TargetInfo::SignedLong:
      HowLong = 1;
      break;
    case TargetInfo::SignedLongLong:
      HowLong = 2;
      break;
    }
    break;
  case 'O':
    assert(!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!")(static_cast <bool> (!IsSpecial && "Can't use two 'N', 'W', 'Z' or 'O' modifiers!"
) ? void (0) : __assert_fail ("!IsSpecial && \"Can't use two 'N', 'W', 'Z' or 'O' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11314, __extension__ __PRETTY_FUNCTION__
));
    assert(HowLong == 0 && "Can't use both 'L' and 'O' modifiers!")(static_cast <bool> (HowLong == 0 && "Can't use both 'L' and 'O' modifiers!"
) ? void (0) : __assert_fail ("HowLong == 0 && \"Can't use both 'L' and 'O' modifiers!\""
, "clang/lib/AST/ASTContext.cpp", 11315, __extension__ __PRETTY_FUNCTION__
));
    #ifndef NDEBUG
    IsSpecial = true;
    #endif
    if (Context.getLangOpts().OpenCL)
      HowLong = 1;
    else
      HowLong = 2;
    break;
  }
}

QualType Type;

// Read the base type.
switch (*Str++) {
default: llvm_unreachable("Unknown builtin type letter!")::llvm::llvm_unreachable_internal("Unknown builtin type letter!"
, "clang/lib/AST/ASTContext.cpp", 11331);
case 'x':
  assert(HowLong == 0 && !Signed && !Unsigned &&(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'x'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'x'!\""
, "clang/lib/AST/ASTContext.cpp", 11334, __extension__ __PRETTY_FUNCTION__
))
         "Bad modifiers used with 'x'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'x'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'x'!\""
, "clang/lib/AST/ASTContext.cpp", 11334, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.Float16Ty;
  break;
case 'y':
  assert(HowLong == 0 && !Signed && !Unsigned &&(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'y'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'y'!\""
, "clang/lib/AST/ASTContext.cpp", 11339, __extension__ __PRETTY_FUNCTION__
))
         "Bad modifiers used with 'y'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'y'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'y'!\""
, "clang/lib/AST/ASTContext.cpp", 11339, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.BFloat16Ty;
  break;
case 'v':
  assert(HowLong == 0 && !Signed && !Unsigned &&(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'v'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'v'!\""
, "clang/lib/AST/ASTContext.cpp", 11344, __extension__ __PRETTY_FUNCTION__
))
         "Bad modifiers used with 'v'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'v'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'v'!\""
, "clang/lib/AST/ASTContext.cpp", 11344, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.VoidTy;
  break;
case 'h':
  assert(HowLong == 0 && !Signed && !Unsigned &&(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'h'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'h'!\""
, "clang/lib/AST/ASTContext.cpp", 11349, __extension__ __PRETTY_FUNCTION__
))
         "Bad modifiers used with 'h'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'h'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'h'!\""
, "clang/lib/AST/ASTContext.cpp", 11349, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.HalfTy;
  break;
case 'f':
  assert(HowLong == 0 && !Signed && !Unsigned &&(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'f'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'f'!\""
, "clang/lib/AST/ASTContext.cpp", 11354, __extension__ __PRETTY_FUNCTION__
))
         "Bad modifiers used with 'f'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers used with 'f'!") ? void (
0) : __assert_fail ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers used with 'f'!\""
, "clang/lib/AST/ASTContext.cpp", 11354, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.FloatTy;
  break;
case 'd':
  assert(HowLong < 3 && !Signed && !Unsigned &&(static_cast <bool> (HowLong < 3 && !Signed &&
 !Unsigned && "Bad modifiers used with 'd'!") ? void (
0) : __assert_fail ("HowLong < 3 && !Signed && !Unsigned && \"Bad modifiers used with 'd'!\""
, "clang/lib/AST/ASTContext.cpp", 11359, __extension__ __PRETTY_FUNCTION__
))
         "Bad modifiers used with 'd'!")(static_cast <bool> (HowLong < 3 && !Signed &&
 !Unsigned && "Bad modifiers used with 'd'!") ? void (
0) : __assert_fail ("HowLong < 3 && !Signed && !Unsigned && \"Bad modifiers used with 'd'!\""
, "clang/lib/AST/ASTContext.cpp", 11359, __extension__ __PRETTY_FUNCTION__
));
  if (HowLong == 1)
    Type = Context.LongDoubleTy;
  else if (HowLong == 2)
    Type = Context.Float128Ty;
  else
    Type = Context.DoubleTy;
  break;
case 's':
  assert(HowLong == 0 && "Bad modifiers used with 's'!")(static_cast <bool> (HowLong == 0 && "Bad modifiers used with 's'!"
) ? void (0) : __assert_fail ("HowLong == 0 && \"Bad modifiers used with 's'!\""
, "clang/lib/AST/ASTContext.cpp", 11368, __extension__ __PRETTY_FUNCTION__
));
  if (Unsigned)
    Type = Context.UnsignedShortTy;
  else
    Type = Context.ShortTy;
  break;
case 'i':
  if (HowLong == 3)
    Type = Unsigned ? Context.UnsignedInt128Ty : Context.Int128Ty;
  else if (HowLong == 2)
    Type = Unsigned ? Context.UnsignedLongLongTy : Context.LongLongTy;
  else if (HowLong == 1)
    Type = Unsigned ? Context.UnsignedLongTy : Context.LongTy;
  else
    Type = Unsigned ? Context.UnsignedIntTy : Context.IntTy;
  break;
case 'c':
  assert(HowLong == 0 && "Bad modifiers used with 'c'!")(static_cast <bool> (HowLong == 0 && "Bad modifiers used with 'c'!"
) ? void (0) : __assert_fail ("HowLong == 0 && \"Bad modifiers used with 'c'!\""
, "clang/lib/AST/ASTContext.cpp", 11385, __extension__ __PRETTY_FUNCTION__
));
  if (Signed)
    Type = Context.SignedCharTy;
  else if (Unsigned)
    Type = Context.UnsignedCharTy;
  else
    Type = Context.CharTy;
  break;
case 'b': // boolean
  assert(HowLong == 0 && !Signed && !Unsigned && "Bad modifiers for 'b'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers for 'b'!") ? void (0) : __assert_fail
 ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers for 'b'!\""
, "clang/lib/AST/ASTContext.cpp", 11394, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.BoolTy;
  break;
case 'z':  // size_t.
  assert(HowLong == 0 && !Signed && !Unsigned && "Bad modifiers for 'z'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers for 'z'!") ? void (0) : __assert_fail
 ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers for 'z'!\""
, "clang/lib/AST/ASTContext.cpp", 11398, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.getSizeType();
  break;
case 'w':  // wchar_t.
  assert(HowLong == 0 && !Signed && !Unsigned && "Bad modifiers for 'w'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers for 'w'!") ? void (0) : __assert_fail
 ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers for 'w'!\""
, "clang/lib/AST/ASTContext.cpp", 11402, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.getWideCharType();
  break;
case 'F':
  Type = Context.getCFConstantStringType();
  break;
case 'G':
  Type = Context.getObjCIdType();
  break;
case 'H':
  Type = Context.getObjCSelType();
  break;
case 'M':
  Type = Context.getObjCSuperType();
  break;
case 'a':
  Type = Context.getBuiltinVaListType();
  assert(!Type.isNull() && "builtin va list type not initialized!")(static_cast <bool> (!Type.isNull() && "builtin va list type not initialized!"
) ? void (0) : __assert_fail ("!Type.isNull() && \"builtin va list type not initialized!\""
, "clang/lib/AST/ASTContext.cpp", 11419, __extension__ __PRETTY_FUNCTION__
));
  break;
case 'A':
  // This is a "reference" to a va_list; however, what exactly
  // this means depends on how va_list is defined. There are two
  // different kinds of va_list: ones passed by value, and ones
  // passed by reference.  An example of a by-value va_list is
  // x86, where va_list is a char*. An example of by-ref va_list
  // is x86-64, where va_list is a __va_list_tag[1]. For x86,
  // we want this argument to be a char*&; for x86-64, we want
  // it to be a __va_list_tag*.
  Type = Context.getBuiltinVaListType();
  assert(!Type.isNull() && "builtin va list type not initialized!")(static_cast <bool> (!Type.isNull() && "builtin va list type not initialized!"
) ? void (0) : __assert_fail ("!Type.isNull() && \"builtin va list type not initialized!\""
, "clang/lib/AST/ASTContext.cpp", 11431, __extension__ __PRETTY_FUNCTION__
));
  if (Type->isArrayType())
    Type = Context.getArrayDecayedType(Type);
  else
    Type = Context.getLValueReferenceType(Type);
  break;
case 'q': {
  char *End;
  unsigned NumElements = strtoul(Str, &End, 10);
  assert(End != Str && "Missing vector size")(static_cast <bool> (End != Str && "Missing vector size"
) ? void (0) : __assert_fail ("End != Str && \"Missing vector size\""
, "clang/lib/AST/ASTContext.cpp", 11440, __extension__ __PRETTY_FUNCTION__
));
  Str = End;

  QualType ElementType = DecodeTypeFromStr(Str, Context, Error,
                                           RequiresICE, false);
  assert(!RequiresICE && "Can't require vector ICE")(static_cast <bool> (!RequiresICE && "Can't require vector ICE"
) ? void (0) : __assert_fail ("!RequiresICE && \"Can't require vector ICE\""
, "clang/lib/AST/ASTContext.cpp", 11445, __extension__ __PRETTY_FUNCTION__
));

  Type = Context.getScalableVectorType(ElementType, NumElements);
  break;
}
case 'V': {
  char *End;
  unsigned NumElements = strtoul(Str, &End, 10);
  assert(End != Str && "Missing vector size")(static_cast <bool> (End != Str && "Missing vector size"
) ? void (0) : __assert_fail ("End != Str && \"Missing vector size\""
, "clang/lib/AST/ASTContext.cpp", 11453, __extension__ __PRETTY_FUNCTION__
));
  Str = End;

  QualType ElementType = DecodeTypeFromStr(Str, Context, Error,
                                           RequiresICE, false);
  assert(!RequiresICE && "Can't require vector ICE")(static_cast <bool> (!RequiresICE && "Can't require vector ICE"
) ? void (0) : __assert_fail ("!RequiresICE && \"Can't require vector ICE\""
, "clang/lib/AST/ASTContext.cpp", 11458, __extension__ __PRETTY_FUNCTION__
));

  // TODO: No way to make AltiVec vectors in builtins yet.
  Type = Context.getVectorType(ElementType, NumElements,
                               VectorType::GenericVector);
  break;
}
case 'E': {
  char *End;

  unsigned NumElements = strtoul(Str, &End, 10);
  assert(End != Str && "Missing vector size")(static_cast <bool> (End != Str && "Missing vector size"
) ? void (0) : __assert_fail ("End != Str && \"Missing vector size\""
, "clang/lib/AST/ASTContext.cpp", 11469, __extension__ __PRETTY_FUNCTION__
));

  Str = End;

  QualType ElementType = DecodeTypeFromStr(Str, Context, Error, RequiresICE,
                                           false);
  Type = Context.getExtVectorType(ElementType, NumElements);
  break;
}
case 'X': {
  QualType ElementType = DecodeTypeFromStr(Str, Context, Error, RequiresICE,
                                           false);
  assert(!RequiresICE && "Can't require complex ICE")(static_cast <bool> (!RequiresICE && "Can't require complex ICE"
) ? void (0) : __assert_fail ("!RequiresICE && \"Can't require complex ICE\""
, "clang/lib/AST/ASTContext.cpp", 11481, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.getComplexType(ElementType);
  break;
}
case 'Y':
  Type = Context.getPointerDiffType();
  break;
case 'P':
  Type = Context.getFILEType();
  if (Type.isNull()) {
    Error = ASTContext::GE_Missing_stdio;
    return {};
  }
  break;
case 'J':
  if (Signed)
    Type = Context.getsigjmp_bufType();
  else
    Type = Context.getjmp_bufType();

  if (Type.isNull()) {
    Error = ASTContext::GE_Missing_setjmp;
    return {};
  }
  break;
case 'K':
  assert(HowLong == 0 && !Signed && !Unsigned && "Bad modifiers for 'K'!")(static_cast <bool> (HowLong == 0 && !Signed &&
 !Unsigned && "Bad modifiers for 'K'!") ? void (0) : __assert_fail
 ("HowLong == 0 && !Signed && !Unsigned && \"Bad modifiers for 'K'!\""
, "clang/lib/AST/ASTContext.cpp", 11507, __extension__ __PRETTY_FUNCTION__
));
  Type = Context.getucontext_tType();

  if (Type.isNull()) {
    Error = ASTContext::GE_Missing_ucontext;
    return {};
  }
  break;
case 'p':
  Type = Context.getProcessIDType();
  break;
}

// If there are modifiers and if we're allowed to parse them, go for it.
Done = !AllowTypeModifiers;
while (!Done) {
  switch (char c = *Str++) {
  default: Done = true; --Str; break;
  case '*':
  case '&': {
    // Both pointers and references can have their pointee types
    // qualified with an address space.
    char *End;
    unsigned AddrSpace = strtoul(Str, &End, 10);
    if (End != Str) {
      // Note AddrSpace == 0 is not the same as an unspecified address space.
      Type = Context.getAddrSpaceQualType(
        Type,
        Context.getLangASForBuiltinAddressSpace(AddrSpace));
      Str = End;
    }
    if (c == '*')
      Type = Context.getPointerType(Type);
    else
      Type = Context.getLValueReferenceType(Type);
    break;
  }
  // FIXME: There's no way to have a built-in with an rvalue ref arg.
  case 'C':
    Type = Type.withConst();
    break;
  case 'D':
    Type = Context.getVolatileType(Type);
    break;
  case 'R':
    Type = Type.withRestrict();
    break;
  }
}

assert((!RequiresICE || Type->isIntegralOrEnumerationType()) &&(static_cast <bool> ((!RequiresICE || Type->isIntegralOrEnumerationType
()) && "Integer constant 'I' type must be an integer"
) ? void (0) : __assert_fail ("(!RequiresICE || Type->isIntegralOrEnumerationType()) && \"Integer constant 'I' type must be an integer\""
, "clang/lib/AST/ASTContext.cpp", 11558, __extension__ __PRETTY_FUNCTION__
))
       "Integer constant 'I' type must be an integer")(static_cast <bool> ((!RequiresICE || Type->isIntegralOrEnumerationType
()) && "Integer constant 'I' type must be an integer"
) ? void (0) : __assert_fail ("(!RequiresICE || Type->isIntegralOrEnumerationType()) && \"Integer constant 'I' type must be an integer\""
, "clang/lib/AST/ASTContext.cpp", 11558, __extension__ __PRETTY_FUNCTION__
));

return Type;
11561}

11563// On some targets such as PowerPC, some of the builtins are defined with custom
11564// type descriptors for target-dependent types. These descriptors are decoded in
11565// other functions, but it may be useful to be able to fall back to default
11566// descriptor decoding to define builtins mixing target-dependent and target-
11567// independent types. This function allows decoding one type descriptor with
11568// default decoding.
11569QualType ASTContext::DecodeTypeStr(const char *&Str, const ASTContext &Context,
                                 GetBuiltinTypeError &Error, bool &RequireICE,
                                 bool AllowTypeModifiers) const {
return DecodeTypeFromStr(Str, Context, Error, RequireICE, AllowTypeModifiers);
11573}

11575/// GetBuiltinType - Return the type for the specified builtin.
11576QualType ASTContext::GetBuiltinType(unsigned Id,
                                  GetBuiltinTypeError &Error,
                                  unsigned *IntegerConstantArgs) const {
const char *TypeStr = BuiltinInfo.getTypeString(Id);
if (TypeStr[0] == '\0') {
  Error = GE_Missing_type;
  return {};
}

SmallVector<QualType, 8> ArgTypes;

bool RequiresICE = false;
Error = GE_None;
QualType ResType = DecodeTypeFromStr(TypeStr, *this, Error,
                                     RequiresICE, true);
if (Error != GE_None)
  return {};

assert(!RequiresICE && "Result of intrinsic cannot be required to be an ICE")(static_cast <bool> (!RequiresICE && "Result of intrinsic cannot be required to be an ICE"
) ? void (0) : __assert_fail ("!RequiresICE && \"Result of intrinsic cannot be required to be an ICE\""
, "clang/lib/AST/ASTContext.cpp", 11594, __extension__ __PRETTY_FUNCTION__
));

while (TypeStr[0] && TypeStr[0] != '.') {
  QualType Ty = DecodeTypeFromStr(TypeStr, *this, Error, RequiresICE, true);
  if (Error != GE_None)
    return {};

  // If this argument is required to be an IntegerConstantExpression and the
  // caller cares, fill in the bitmask we return.
  if (RequiresICE && IntegerConstantArgs)
    *IntegerConstantArgs |= 1 << ArgTypes.size();

  // Do array -> pointer decay.  The builtin should use the decayed type.
  if (Ty->isArrayType())
    Ty = getArrayDecayedType(Ty);

  ArgTypes.push_back(Ty);
}

if (Id == Builtin::BI__GetExceptionInfo)
  return {};

assert((TypeStr[0] != '.' || TypeStr[1] == 0) &&(static_cast <bool> ((TypeStr[0] != '.' || TypeStr[1] ==
 0) && "'.' should only occur at end of builtin type list!"
) ? void (0) : __assert_fail ("(TypeStr[0] != '.' || TypeStr[1] == 0) && \"'.' should only occur at end of builtin type list!\""
, "clang/lib/AST/ASTContext.cpp", 11617, __extension__ __PRETTY_FUNCTION__
))
       "'.' should only occur at end of builtin type list!")(static_cast <bool> ((TypeStr[0] != '.' || TypeStr[1] ==
 0) && "'.' should only occur at end of builtin type list!"
) ? void (0) : __assert_fail ("(TypeStr[0] != '.' || TypeStr[1] == 0) && \"'.' should only occur at end of builtin type list!\""
, "clang/lib/AST/ASTContext.cpp", 11617, __extension__ __PRETTY_FUNCTION__
));

bool Variadic = (TypeStr[0] == '.');

FunctionType::ExtInfo EI(getDefaultCallingConvention(
    Variadic, /*IsCXXMethod=*/false, /*IsBuiltin=*/true));
if (BuiltinInfo.isNoReturn(Id)) EI = EI.withNoReturn(true);


// We really shouldn't be making a no-proto type here.
if (ArgTypes.empty() && Variadic && !getLangOpts().requiresStrictPrototypes())
  return getFunctionNoProtoType(ResType, EI);

FunctionProtoType::ExtProtoInfo EPI;
EPI.ExtInfo = EI;
EPI.Variadic = Variadic;
if (getLangOpts().CPlusPlus && BuiltinInfo.isNoThrow(Id))
  EPI.ExceptionSpec.Type =
      getLangOpts().CPlusPlus11 ? EST_BasicNoexcept : EST_DynamicNone;

return getFunctionType(ResType, ArgTypes, EPI);
11638}

11640static GVALinkage basicGVALinkageForFunction(const ASTContext &Context,
                                           const FunctionDecl *FD) {
if (!FD->isExternallyVisible())
  return GVA_Internal;

// Non-user-provided functions get emitted as weak definitions with every
// use, no matter whether they've been explicitly instantiated etc.
if (!FD->isUserProvided())
  return GVA_DiscardableODR;

GVALinkage External;
switch (FD->getTemplateSpecializationKind()) {
case TSK_Undeclared:
case TSK_ExplicitSpecialization:
  External = GVA_StrongExternal;
  break;

case TSK_ExplicitInstantiationDefinition:
  return GVA_StrongODR;

// C++11 [temp.explicit]p10:
//   [ Note: The intent is that an inline function that is the subject of
//   an explicit instantiation declaration will still be implicitly
//   instantiated when used so that the body can be considered for
//   inlining, but that no out-of-line copy of the inline function would be
//   generated in the translation unit. -- end note ]
case TSK_ExplicitInstantiationDeclaration:
  return GVA_AvailableExternally;

case TSK_ImplicitInstantiation:
  External = GVA_DiscardableODR;
  break;
}

if (!FD->isInlined())
  return External;

if ((!Context.getLangOpts().CPlusPlus &&
     !Context.getTargetInfo().getCXXABI().isMicrosoft() &&
     !FD->hasAttr<DLLExportAttr>()) ||
    FD->hasAttr<GNUInlineAttr>()) {
  // FIXME: This doesn't match gcc's behavior for dllexport inline functions.

  // GNU or C99 inline semantics. Determine whether this symbol should be
  // externally visible.
  if (FD->isInlineDefinitionExternallyVisible())
    return External;

  // C99 inline semantics, where the symbol is not externally visible.
  return GVA_AvailableExternally;
}

// Functions specified with extern and inline in -fms-compatibility mode
// forcibly get emitted.  While the body of the function cannot be later
// replaced, the function definition cannot be discarded.
if (FD->isMSExternInline())
  return GVA_StrongODR;

return GVA_DiscardableODR;
11699}

11701static GVALinkage adjustGVALinkageForAttributes(const ASTContext &Context,
                                              const Decl *D, GVALinkage L) {
// See http://msdn.microsoft.com/en-us/library/xa0d9ste.aspx
// dllexport/dllimport on inline functions.
if (D->hasAttr<DLLImportAttr>()) {
  if (L == GVA_DiscardableODR || L == GVA_StrongODR)
    return GVA_AvailableExternally;
} else if (D->hasAttr<DLLExportAttr>()) {
  if (L == GVA_DiscardableODR)
    return GVA_StrongODR;
} else if (Context.getLangOpts().CUDA && Context.getLangOpts().CUDAIsDevice) {
  // Device-side functions with __global__ attribute must always be
  // visible externally so they can be launched from host.
  if (D->hasAttr<CUDAGlobalAttr>() &&
      (L == GVA_DiscardableODR || L == GVA_Internal))
    return GVA_StrongODR;
  // Single source offloading languages like CUDA/HIP need to be able to
  // access static device variables from host code of the same compilation
  // unit. This is done by externalizing the static variable with a shared
  // name between the host and device compilation which is the same for the
  // same compilation unit whereas different among different compilation
  // units.
  if (Context.shouldExternalize(D))
    return GVA_StrongExternal;
}
return L;
11727}

11729/// Adjust the GVALinkage for a declaration based on what an external AST source
11730/// knows about whether there can be other definitions of this declaration.
11731static GVALinkage
11732adjustGVALinkageForExternalDefinitionKind(const ASTContext &Ctx, const Decl *D,
                                        GVALinkage L) {
ExternalASTSource *Source = Ctx.getExternalSource();
if (!Source)
  return L;

switch (Source->hasExternalDefinitions(D)) {
case ExternalASTSource::EK_Never:
  // Other translation units rely on us to provide the definition.
  if (L == GVA_DiscardableODR)
    return GVA_StrongODR;
  break;

case ExternalASTSource::EK_Always:
  return GVA_AvailableExternally;

case ExternalASTSource::EK_ReplyHazy:
  break;
}
return L;
11752}

11754GVALinkage ASTContext::GetGVALinkageForFunction(const FunctionDecl *FD) const {
return adjustGVALinkageForExternalDefinitionKind(*this, FD,
         adjustGVALinkageForAttributes(*this, FD,
           basicGVALinkageForFunction(*this, FD)));
11758}

11760static GVALinkage basicGVALinkageForVariable(const ASTContext &Context,
                                           const VarDecl *VD) {
if (!VD->isExternallyVisible())
  return GVA_Internal;

if (VD->isStaticLocal()) {
  const DeclContext *LexicalContext = VD->getParentFunctionOrMethod();
  while (LexicalContext && !isa<FunctionDecl>(LexicalContext))
    LexicalContext = LexicalContext->getLexicalParent();

  // ObjC Blocks can create local variables that don't have a FunctionDecl
  // LexicalContext.
  if (!LexicalContext)
    return GVA_DiscardableODR;

  // Otherwise, let the static local variable inherit its linkage from the
  // nearest enclosing function.
  auto StaticLocalLinkage =
      Context.GetGVALinkageForFunction(cast<FunctionDecl>(LexicalContext));

  // Itanium ABI 5.2.2: "Each COMDAT group [for a static local variable] must
  // be emitted in any object with references to the symbol for the object it
  // contains, whether inline or out-of-line."
  // Similar behavior is observed with MSVC. An alternative ABI could use
  // StrongODR/AvailableExternally to match the function, but none are
  // known/supported currently.
  if (StaticLocalLinkage == GVA_StrongODR ||
      StaticLocalLinkage == GVA_AvailableExternally)
    return GVA_DiscardableODR;
  return StaticLocalLinkage;
}

// MSVC treats in-class initialized static data members as definitions.
// By giving them non-strong linkage, out-of-line definitions won't
// cause link errors.
if (Context.isMSStaticDataMemberInlineDefinition(VD))
  return GVA_DiscardableODR;

// Most non-template variables have strong linkage; inline variables are
// linkonce_odr or (occasionally, for compatibility) weak_odr.
GVALinkage StrongLinkage;
switch (Context.getInlineVariableDefinitionKind(VD)) {
case ASTContext::InlineVariableDefinitionKind::None:
  StrongLinkage = GVA_StrongExternal;
  break;
case ASTContext::InlineVariableDefinitionKind::Weak:
case ASTContext::InlineVariableDefinitionKind::WeakUnknown:
  StrongLinkage = GVA_DiscardableODR;
  break;
case ASTContext::InlineVariableDefinitionKind::Strong:
  StrongLinkage = GVA_StrongODR;
  break;
}

switch (VD->getTemplateSpecializationKind()) {
case TSK_Undeclared:
  return StrongLinkage;

case TSK_ExplicitSpecialization:
  return Context.getTargetInfo().getCXXABI().isMicrosoft() &&
                 VD->isStaticDataMember()
             ? GVA_StrongODR
             : StrongLinkage;

case TSK_ExplicitInstantiationDefinition:
  return GVA_StrongODR;

case TSK_ExplicitInstantiationDeclaration:
  return GVA_AvailableExternally;

case TSK_ImplicitInstantiation:
  return GVA_DiscardableODR;
}

llvm_unreachable("Invalid Linkage!")::llvm::llvm_unreachable_internal("Invalid Linkage!", "clang/lib/AST/ASTContext.cpp"
, 11834);
11835}

11837GVALinkage ASTContext::GetGVALinkageForVariable(const VarDecl *VD) const {
return adjustGVALinkageForExternalDefinitionKind(*this, VD,
         adjustGVALinkageForAttributes(*this, VD,
           basicGVALinkageForVariable(*this, VD)));
11841}

11843bool ASTContext::DeclMustBeEmitted(const Decl *D) {
if (const auto *VD = dyn_cast<VarDecl>(D)) {
  if (!VD->isFileVarDecl())
    return false;
  // Global named register variables (GNU extension) are never emitted.
  if (VD->getStorageClass() == SC_Register)
    return false;
  if (VD->getDescribedVarTemplate() ||
      isa<VarTemplatePartialSpecializationDecl>(VD))
    return false;
} else if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
  // We never need to emit an uninstantiated function template.
  if (FD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate)
    return false;
} else if (isa<PragmaCommentDecl>(D))
  return true;
else if (isa<PragmaDetectMismatchDecl>(D))
  return true;
else if (isa<OMPRequiresDecl>(D))
  return true;
else if (isa<OMPThreadPrivateDecl>(D))
  return !D->getDeclContext()->isDependentContext();
else if (isa<OMPAllocateDecl>(D))
  return !D->getDeclContext()->isDependentContext();
else if (isa<OMPDeclareReductionDecl>(D) || isa<OMPDeclareMapperDecl>(D))
  return !D->getDeclContext()->isDependentContext();
else if (isa<ImportDecl>(D))
  return true;
else
  return false;

// If this is a member of a class template, we do not need to emit it.
if (D->getDeclContext()->isDependentContext())
  return false;

// Weak references don't produce any output by themselves.
if (D->hasAttr<WeakRefAttr>())
  return false;

// Aliases and used decls are required.
if (D->hasAttr<AliasAttr>() || D->hasAttr<UsedAttr>())
  return true;

if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
  // Forward declarations aren't required.
  if (!FD->doesThisDeclarationHaveABody())
    return FD->doesDeclarationForceExternallyVisibleDefinition();

  // Constructors and destructors are required.
  if (FD->hasAttr<ConstructorAttr>() || FD->hasAttr<DestructorAttr>())
    return true;

  // The key function for a class is required.  This rule only comes
  // into play when inline functions can be key functions, though.
  if (getTargetInfo().getCXXABI().canKeyFunctionBeInline()) {
    if (const auto *MD = dyn_cast<CXXMethodDecl>(FD)) {
      const CXXRecordDecl *RD = MD->getParent();
      if (MD->isOutOfLine() && RD->isDynamicClass()) {
        const CXXMethodDecl *KeyFunc = getCurrentKeyFunction(RD);
        if (KeyFunc && KeyFunc->getCanonicalDecl() == MD->getCanonicalDecl())
          return true;
      }
    }
  }

  GVALinkage Linkage = GetGVALinkageForFunction(FD);

  // static, static inline, always_inline, and extern inline functions can
  // always be deferred.  Normal inline functions can be deferred in C99/C++.
  // Implicit template instantiations can also be deferred in C++.
  return !isDiscardableGVALinkage(Linkage);
}

const auto *VD = cast<VarDecl>(D);
assert(VD->isFileVarDecl() && "Expected file scoped var")(static_cast <bool> (VD->isFileVarDecl() && "Expected file scoped var"
) ? void (0) : __assert_fail ("VD->isFileVarDecl() && \"Expected file scoped var\""
, "clang/lib/AST/ASTContext.cpp", 11917, __extension__ __PRETTY_FUNCTION__
));

// If the decl is marked as `declare target to`, it should be emitted for the
// host and for the device.
if (LangOpts.OpenMP &&
    OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD))
  return true;

if (VD->isThisDeclarationADefinition() == VarDecl::DeclarationOnly &&
    !isMSStaticDataMemberInlineDefinition(VD))
  return false;

// Variables in other module units shouldn't be forced to be emitted.
if (VD->isInAnotherModuleUnit())
  return false;

// Variables that can be needed in other TUs are required.
auto Linkage = GetGVALinkageForVariable(VD);
if (!isDiscardableGVALinkage(Linkage))
  return true;

// We never need to emit a variable that is available in another TU.
if (Linkage == GVA_AvailableExternally)
  return false;

// Variables that have destruction with side-effects are required.
if (VD->needsDestruction(*this))
  return true;

// Variables that have initialization with side-effects are required.
if (VD->getInit() && VD->getInit()->HasSideEffects(*this) &&
    // We can get a value-dependent initializer during error recovery.
    (VD->getInit()->isValueDependent() || !VD->evaluateValue()))
  return true;

// Likewise, variables with tuple-like bindings are required if their
// bindings have side-effects.
if (const auto *DD = dyn_cast<DecompositionDecl>(VD))
  for (const auto *BD : DD->bindings())
    if (const auto *BindingVD = BD->getHoldingVar())
      if (DeclMustBeEmitted(BindingVD))
        return true;

return false;
11961}

11963void ASTContext::forEachMultiversionedFunctionVersion(
  const FunctionDecl *FD,
  llvm::function_ref<void(FunctionDecl *)> Pred) const {
assert(FD->isMultiVersion() && "Only valid for multiversioned functions")(static_cast <bool> (FD->isMultiVersion() &&
 "Only valid for multiversioned functions") ? void (0) : __assert_fail
 ("FD->isMultiVersion() && \"Only valid for multiversioned functions\""
, "clang/lib/AST/ASTContext.cpp", 11966, __extension__ __PRETTY_FUNCTION__
));
llvm::SmallDenseSet<const FunctionDecl*, 4> SeenDecls;
FD = FD->getMostRecentDecl();
// FIXME: The order of traversal here matters and depends on the order of
// lookup results, which happens to be (mostly) oldest-to-newest, but we
// shouldn't rely on that.
for (auto *CurDecl :
     FD->getDeclContext()->getRedeclContext()->lookup(FD->getDeclName())) {
  FunctionDecl *CurFD = CurDecl->getAsFunction()->getMostRecentDecl();
  if (CurFD && hasSameType(CurFD->getType(), FD->getType()) &&
      !SeenDecls.contains(CurFD)) {
    SeenDecls.insert(CurFD);
    Pred(CurFD);
  }
}
11981}

11983CallingConv ASTContext::getDefaultCallingConvention(bool IsVariadic,
                                                  bool IsCXXMethod,
                                                  bool IsBuiltin) const {
// Pass through to the C++ ABI object
if (IsCXXMethod)
  return ABI->getDefaultMethodCallConv(IsVariadic);

// Builtins ignore user-specified default calling convention and remain the
// Target's default calling convention.
if (!IsBuiltin) {
  switch (LangOpts.getDefaultCallingConv()) {
  case LangOptions::DCC_None:
    break;
  case LangOptions::DCC_CDecl:
    return CC_C;
  case LangOptions::DCC_FastCall:
    if (getTargetInfo().hasFeature("sse2") && !IsVariadic)
      return CC_X86FastCall;
    break;
  case LangOptions::DCC_StdCall:
    if (!IsVariadic)
      return CC_X86StdCall;
    break;
  case LangOptions::DCC_VectorCall:
    // __vectorcall cannot be applied to variadic functions.
    if (!IsVariadic)
      return CC_X86VectorCall;
    break;
  case LangOptions::DCC_RegCall:
    // __regcall cannot be applied to variadic functions.
    if (!IsVariadic)
      return CC_X86RegCall;
    break;
  }
}
return Target->getDefaultCallingConv();
12019}

12021bool ASTContext::isNearlyEmpty(const CXXRecordDecl *RD) const {
// Pass through to the C++ ABI object
return ABI->isNearlyEmpty(RD);
12024}

12026VTableContextBase *ASTContext::getVTableContext() {
if (!VTContext.get()) {
  auto ABI = Target->getCXXABI();
  if (ABI.isMicrosoft())
    VTContext.reset(new MicrosoftVTableContext(*this));
  else {
    auto ComponentLayout = getLangOpts().RelativeCXXABIVTables
                               ? ItaniumVTableContext::Relative
                               : ItaniumVTableContext::Pointer;
    VTContext.reset(new ItaniumVTableContext(*this, ComponentLayout));
  }
}
return VTContext.get();
12039}

12041MangleContext *ASTContext::createMangleContext(const TargetInfo *T) {
if (!T)
  T = Target;
switch (T->getCXXABI().getKind()) {
case TargetCXXABI::AppleARM64:
case TargetCXXABI::Fuchsia:
case TargetCXXABI::GenericAArch64:
case TargetCXXABI::GenericItanium:
case TargetCXXABI::GenericARM:
case TargetCXXABI::GenericMIPS:
case TargetCXXABI::iOS:
case TargetCXXABI::WebAssembly:
case TargetCXXABI::WatchOS:
case TargetCXXABI::XL:
  return ItaniumMangleContext::create(*this, getDiagnostics());
case TargetCXXABI::Microsoft:
  return MicrosoftMangleContext::create(*this, getDiagnostics());
}
llvm_unreachable("Unsupported ABI")::llvm::llvm_unreachable_internal("Unsupported ABI", "clang/lib/AST/ASTContext.cpp"
, 12059);
12060}

12062MangleContext *ASTContext::createDeviceMangleContext(const TargetInfo &T) {
assert(T.getCXXABI().getKind() != TargetCXXABI::Microsoft &&(static_cast <bool> (T.getCXXABI().getKind() != TargetCXXABI
::Microsoft && "Device mangle context does not support Microsoft mangling."
) ? void (0) : __assert_fail ("T.getCXXABI().getKind() != TargetCXXABI::Microsoft && \"Device mangle context does not support Microsoft mangling.\""
, "clang/lib/AST/ASTContext.cpp", 12064, __extension__ __PRETTY_FUNCTION__
))
       "Device mangle context does not support Microsoft mangling.")(static_cast <bool> (T.getCXXABI().getKind() != TargetCXXABI
::Microsoft && "Device mangle context does not support Microsoft mangling."
) ? void (0) : __assert_fail ("T.getCXXABI().getKind() != TargetCXXABI::Microsoft && \"Device mangle context does not support Microsoft mangling.\""
, "clang/lib/AST/ASTContext.cpp", 12064, __extension__ __PRETTY_FUNCTION__
));
switch (T.getCXXABI().getKind()) {
case TargetCXXABI::AppleARM64:
case TargetCXXABI::Fuchsia:
case TargetCXXABI::GenericAArch64:
case TargetCXXABI::GenericItanium:
case TargetCXXABI::GenericARM:
case TargetCXXABI::GenericMIPS:
case TargetCXXABI::iOS:
case TargetCXXABI::WebAssembly:
case TargetCXXABI::WatchOS:
case TargetCXXABI::XL:
  return ItaniumMangleContext::create(
      *this, getDiagnostics(),
      [](ASTContext &, const NamedDecl *ND) -> std::optional<unsigned> {
        if (const auto *RD = dyn_cast<CXXRecordDecl>(ND))
          return RD->getDeviceLambdaManglingNumber();
        return std::nullopt;
      },
      /*IsAux=*/true);
case TargetCXXABI::Microsoft:
  return MicrosoftMangleContext::create(*this, getDiagnostics(),
                                        /*IsAux=*/true);
}
llvm_unreachable("Unsupported ABI")::llvm::llvm_unreachable_internal("Unsupported ABI", "clang/lib/AST/ASTContext.cpp"
, 12088);
12089}

12091CXXABI::~CXXABI() = default;

12093size_t ASTContext::getSideTableAllocatedMemory() const {
return ASTRecordLayouts.getMemorySize() +
       llvm::capacity_in_bytes(ObjCLayouts) +
       llvm::capacity_in_bytes(KeyFunctions) +
       llvm::capacity_in_bytes(ObjCImpls) +
       llvm::capacity_in_bytes(BlockVarCopyInits) +
       llvm::capacity_in_bytes(DeclAttrs) +
       llvm::capacity_in_bytes(TemplateOrInstantiation) +
       llvm::capacity_in_bytes(InstantiatedFromUsingDecl) +
       llvm::capacity_in_bytes(InstantiatedFromUsingShadowDecl) +
       llvm::capacity_in_bytes(InstantiatedFromUnnamedFieldDecl) +
       llvm::capacity_in_bytes(OverriddenMethods) +
       llvm::capacity_in_bytes(Types) +
       llvm::capacity_in_bytes(VariableArrayTypes);
12107}

12109/// getIntTypeForBitwidth -
12110/// sets integer QualTy according to specified details:
12111/// bitwidth, signed/unsigned.
12112/// Returns empty type if there is no appropriate target types.
12113QualType ASTContext::getIntTypeForBitwidth(unsigned DestWidth,
                                         unsigned Signed) const {
TargetInfo::IntType Ty = getTargetInfo().getIntTypeByWidth(DestWidth, Signed);
CanQualType QualTy = getFromTargetType(Ty);
if (!QualTy && DestWidth == 128)
  return Signed ? Int128Ty : UnsignedInt128Ty;
return QualTy;
12120}

12122/// getRealTypeForBitwidth -
12123/// sets floating point QualTy according to specified bitwidth.
12124/// Returns empty type if there is no appropriate target types.
12125QualType ASTContext::getRealTypeForBitwidth(unsigned DestWidth,
                                          FloatModeKind ExplicitType) const {
FloatModeKind Ty =
    getTargetInfo().getRealTypeByWidth(DestWidth, ExplicitType);
switch (Ty) {
case FloatModeKind::Half:
  return HalfTy;
case FloatModeKind::Float:
  return FloatTy;
case FloatModeKind::Double:
  return DoubleTy;
case FloatModeKind::LongDouble:
  return LongDoubleTy;
case FloatModeKind::Float128:
  return Float128Ty;
case FloatModeKind::Ibm128:
  return Ibm128Ty;
case FloatModeKind::NoFloat:
  return {};
}

llvm_unreachable("Unhandled TargetInfo::RealType value")::llvm::llvm_unreachable_internal("Unhandled TargetInfo::RealType value"
, "clang/lib/AST/ASTContext.cpp", 12146);
12147}

12149void ASTContext::setManglingNumber(const NamedDecl *ND, unsigned Number) {
if (Number > 1)
  MangleNumbers[ND] = Number;
12152}

12154unsigned ASTContext::getManglingNumber(const NamedDecl *ND,
                                     bool ForAuxTarget) const {
auto I = MangleNumbers.find(ND);
unsigned Res = I != MangleNumbers.end() ? I->second : 1;
// CUDA/HIP host compilation encodes host and device mangling numbers
// as lower and upper half of 32 bit integer.
if (LangOpts.CUDA && !LangOpts.CUDAIsDevice) {
  Res = ForAuxTarget ? Res >> 16 : Res & 0xFFFF;
} else {
  assert(!ForAuxTarget && "Only CUDA/HIP host compilation supports mangling "(static_cast <bool> (!ForAuxTarget && "Only CUDA/HIP host compilation supports mangling "
 "number for aux target") ? void (0) : __assert_fail ("!ForAuxTarget && \"Only CUDA/HIP host compilation supports mangling \" \"number for aux target\""
, "clang/lib/AST/ASTContext.cpp", 12164, __extension__ __PRETTY_FUNCTION__
))
                          "number for aux target")(static_cast <bool> (!ForAuxTarget && "Only CUDA/HIP host compilation supports mangling "
 "number for aux target") ? void (0) : __assert_fail ("!ForAuxTarget && \"Only CUDA/HIP host compilation supports mangling \" \"number for aux target\""
, "clang/lib/AST/ASTContext.cpp", 12164, __extension__ __PRETTY_FUNCTION__
));
}
return Res > 1 ? Res : 1;
12167}

12169void ASTContext::setStaticLocalNumber(const VarDecl *VD, unsigned Number) {
if (Number > 1)
  StaticLocalNumbers[VD] = Number;
12172}

12174unsigned ASTContext::getStaticLocalNumber(const VarDecl *VD) const {
auto I = StaticLocalNumbers.find(VD);
return I != StaticLocalNumbers.end() ? I->second : 1;
12177}

12179MangleNumberingContext &
12180ASTContext::getManglingNumberContext(const DeclContext *DC) {
assert(LangOpts.CPlusPlus)(static_cast <bool> (LangOpts.CPlusPlus) ? void (0) : __assert_fail
 ("LangOpts.CPlusPlus", "clang/lib/AST/ASTContext.cpp", 12181
, __extension__ __PRETTY_FUNCTION__));  // We don't need mangling numbers for plain C.
std::unique_ptr<MangleNumberingContext> &MCtx = MangleNumberingContexts[DC];
if (!MCtx)
  MCtx = createMangleNumberingContext();
return *MCtx;
12186}

12188MangleNumberingContext &
12189ASTContext::getManglingNumberContext(NeedExtraManglingDecl_t, const Decl *D) {
assert(LangOpts.CPlusPlus)(static_cast <bool> (LangOpts.CPlusPlus) ? void (0) : __assert_fail
 ("LangOpts.CPlusPlus", "clang/lib/AST/ASTContext.cpp", 12190
, __extension__ __PRETTY_FUNCTION__)); // We don't need mangling numbers for plain C.
std::unique_ptr<MangleNumberingContext> &MCtx =
    ExtraMangleNumberingContexts[D];
if (!MCtx)
  MCtx = createMangleNumberingContext();
return *MCtx;
12196}

12198std::unique_ptr<MangleNumberingContext>
12199ASTContext::createMangleNumberingContext() const {
return ABI->createMangleNumberingContext();
12201}

12203const CXXConstructorDecl *
12204ASTContext::getCopyConstructorForExceptionObject(CXXRecordDecl *RD) {
return ABI->getCopyConstructorForExceptionObject(
    cast<CXXRecordDecl>(RD->getFirstDecl()));
12207}

12209void ASTContext::addCopyConstructorForExceptionObject(CXXRecordDecl *RD,
                                                    CXXConstructorDecl *CD) {
return ABI->addCopyConstructorForExceptionObject(
    cast<CXXRecordDecl>(RD->getFirstDecl()),
    cast<CXXConstructorDecl>(CD->getFirstDecl()));
12214}

12216void ASTContext::addTypedefNameForUnnamedTagDecl(TagDecl *TD,
                                               TypedefNameDecl *DD) {
return ABI->addTypedefNameForUnnamedTagDecl(TD, DD);
12219}

12221TypedefNameDecl *
12222ASTContext::getTypedefNameForUnnamedTagDecl(const TagDecl *TD) {
return ABI->getTypedefNameForUnnamedTagDecl(TD);
12224}

12226void ASTContext::addDeclaratorForUnnamedTagDecl(TagDecl *TD,
                                              DeclaratorDecl *DD) {
return ABI->addDeclaratorForUnnamedTagDecl(TD, DD);
12229}

12231DeclaratorDecl *ASTContext::getDeclaratorForUnnamedTagDecl(const TagDecl *TD) {
return ABI->getDeclaratorForUnnamedTagDecl(TD);
12233}

12235void ASTContext::setParameterIndex(const ParmVarDecl *D, unsigned int index) {
ParamIndices[D] = index;
12237}

12239unsigned ASTContext::getParameterIndex(const ParmVarDecl *D) const {
ParameterIndexTable::const_iterator I = ParamIndices.find(D);
assert(I != ParamIndices.end() &&(static_cast <bool> (I != ParamIndices.end() &&
 "ParmIndices lacks entry set by ParmVarDecl") ? void (0) : __assert_fail
 ("I != ParamIndices.end() && \"ParmIndices lacks entry set by ParmVarDecl\""
, "clang/lib/AST/ASTContext.cpp", 12242, __extension__ __PRETTY_FUNCTION__
))
       "ParmIndices lacks entry set by ParmVarDecl")(static_cast <bool> (I != ParamIndices.end() &&
 "ParmIndices lacks entry set by ParmVarDecl") ? void (0) : __assert_fail
 ("I != ParamIndices.end() && \"ParmIndices lacks entry set by ParmVarDecl\""
, "clang/lib/AST/ASTContext.cpp", 12242, __extension__ __PRETTY_FUNCTION__
));
return I->second;
12244}

12246QualType ASTContext::getStringLiteralArrayType(QualType EltTy,
                                             unsigned Length) const {
// A C++ string literal has a const-qualified element type (C++ 2.13.4p1).
if (getLangOpts().CPlusPlus || getLangOpts().ConstStrings)
  EltTy = EltTy.withConst();

EltTy = adjustStringLiteralBaseType(EltTy);

// Get an array type for the string, according to C99 6.4.5. This includes
// the null terminator character.
return getConstantArrayType(EltTy, llvm::APInt(32, Length + 1), nullptr,
                            ArrayType::Normal, /*IndexTypeQuals*/ 0);
12258}

12260StringLiteral *
12261ASTContext::getPredefinedStringLiteralFromCache(StringRef Key) const {
StringLiteral *&Result = StringLiteralCache[Key];
if (!Result)
  Result = StringLiteral::Create(
      *this, Key, StringLiteral::Ordinary,
      /*Pascal*/ false, getStringLiteralArrayType(CharTy, Key.size()),
      SourceLocation());
return Result;
12269}

12271MSGuidDecl *
12272ASTContext::getMSGuidDecl(MSGuidDecl::Parts Parts) const {
assert(MSGuidTagDecl && "building MS GUID without MS extensions?")(static_cast <bool> (MSGuidTagDecl && "building MS GUID without MS extensions?"
) ? void (0) : __assert_fail ("MSGuidTagDecl && \"building MS GUID without MS extensions?\""
, "clang/lib/AST/ASTContext.cpp", 12273, __extension__ __PRETTY_FUNCTION__
));

llvm::FoldingSetNodeID ID;
MSGuidDecl::Profile(ID, Parts);

void *InsertPos;
if (MSGuidDecl *Existing = MSGuidDecls.FindNodeOrInsertPos(ID, InsertPos))
  return Existing;

QualType GUIDType = getMSGuidType().withConst();
MSGuidDecl *New = MSGuidDecl::Create(*this, GUIDType, Parts);
MSGuidDecls.InsertNode(New, InsertPos);
return New;
12286}

12288UnnamedGlobalConstantDecl *
12289ASTContext::getUnnamedGlobalConstantDecl(QualType Ty,
                                       const APValue &APVal) const {
llvm::FoldingSetNodeID ID;
UnnamedGlobalConstantDecl::Profile(ID, Ty, APVal);

void *InsertPos;
if (UnnamedGlobalConstantDecl *Existing =
        UnnamedGlobalConstantDecls.FindNodeOrInsertPos(ID, InsertPos))
  return Existing;

UnnamedGlobalConstantDecl *New =
    UnnamedGlobalConstantDecl::Create(*this, Ty, APVal);
UnnamedGlobalConstantDecls.InsertNode(New, InsertPos);
return New;
12303}

12305TemplateParamObjectDecl *
12306ASTContext::getTemplateParamObjectDecl(QualType T, const APValue &V) const {
assert(T->isRecordType() && "template param object of unexpected type")(static_cast <bool> (T->isRecordType() && "template param object of unexpected type"
) ? void (0) : __assert_fail ("T->isRecordType() && \"template param object of unexpected type\""
, "clang/lib/AST/ASTContext.cpp", 12307, __extension__ __PRETTY_FUNCTION__
));

// C++ [temp.param]p8:
//   [...] a static storage duration object of type 'const T' [...]
T.addConst();

llvm::FoldingSetNodeID ID;
TemplateParamObjectDecl::Profile(ID, T, V);

void *InsertPos;
if (TemplateParamObjectDecl *Existing =
        TemplateParamObjectDecls.FindNodeOrInsertPos(ID, InsertPos))
  return Existing;

TemplateParamObjectDecl *New = TemplateParamObjectDecl::Create(*this, T, V);
TemplateParamObjectDecls.InsertNode(New, InsertPos);
return New;
12324}

12326bool ASTContext::AtomicUsesUnsupportedLibcall(const AtomicExpr *E) const {
const llvm::Triple &T = getTargetInfo().getTriple();
if (!T.isOSDarwin())
  return false;

if (!(T.isiOS() && T.isOSVersionLT(7)) &&
    !(T.isMacOSX() && T.isOSVersionLT(10, 9)))
  return false;

QualType AtomicTy = E->getPtr()->getType()->getPointeeType();
CharUnits sizeChars = getTypeSizeInChars(AtomicTy);
uint64_t Size = sizeChars.getQuantity();
CharUnits alignChars = getTypeAlignInChars(AtomicTy);
unsigned Align = alignChars.getQuantity();
unsigned MaxInlineWidthInBits = getTargetInfo().getMaxAtomicInlineWidth();
return (Size != Align || toBits(sizeChars) > MaxInlineWidthInBits);
12342}

12344bool
12345ASTContext::ObjCMethodsAreEqual(const ObjCMethodDecl *MethodDecl,
                              const ObjCMethodDecl *MethodImpl) {
// No point trying to match an unavailable/deprecated mothod.
if (MethodDecl->hasAttr<UnavailableAttr>()
    || MethodDecl->hasAttr<DeprecatedAttr>())
  return false;
if (MethodDecl->getObjCDeclQualifier() !=
    MethodImpl->getObjCDeclQualifier())
  return false;
if (!hasSameType(MethodDecl->getReturnType(), MethodImpl->getReturnType()))
  return false;

if (MethodDecl->param_size() != MethodImpl->param_size())
  return false;

for (ObjCMethodDecl::param_const_iterator IM = MethodImpl->param_begin(),
     IF = MethodDecl->param_begin(), EM = MethodImpl->param_end(),
     EF = MethodDecl->param_end();
     IM != EM && IF != EF; ++IM, ++IF) {
  const ParmVarDecl *DeclVar = (*IF);
  const ParmVarDecl *ImplVar = (*IM);
  if (ImplVar->getObjCDeclQualifier() != DeclVar->getObjCDeclQualifier())
    return false;
  if (!hasSameType(DeclVar->getType(), ImplVar->getType()))
    return false;
}

return (MethodDecl->isVariadic() == MethodImpl->isVariadic());
12373}

12375uint64_t ASTContext::getTargetNullPointerValue(QualType QT) const {
LangAS AS;
if (QT->getUnqualifiedDesugaredType()->isNullPtrType())
  AS = LangAS::Default;
else
  AS = QT->getPointeeType().getAddressSpace();

return getTargetInfo().getNullPointerValue(AS);
12383}

12385unsigned ASTContext::getTargetAddressSpace(LangAS AS) const {
return getTargetInfo().getTargetAddressSpace(AS);
12387}

12389bool ASTContext::hasSameExpr(const Expr *X, const Expr *Y) const {
if (X == Y)
  return true;
if (!X || !Y)
  return false;
llvm::FoldingSetNodeID IDX, IDY;
X->Profile(IDX, *this, /*Canonical=*/true);
Y->Profile(IDY, *this, /*Canonical=*/true);
return IDX == IDY;
12398}

12400// The getCommon* helpers return, for given 'same' X and Y entities given as
12401// inputs, another entity which is also the 'same' as the inputs, but which
12402// is closer to the canonical form of the inputs, each according to a given
12403// criteria.
12404// The getCommon*Checked variants are 'null inputs not-allowed' equivalents of
12405// the regular ones.

12407static Decl *getCommonDecl(Decl *X, Decl *Y) {
if (!declaresSameEntity(X, Y))
  return nullptr;
for (const Decl *DX : X->redecls()) {
  // If we reach Y before reaching the first decl, that means X is older.
  if (DX == Y)
    return X;
  // If we reach the first decl, then Y is older.
  if (DX->isFirstDecl())
    return Y;
}
llvm_unreachable("Corrupt redecls chain")::llvm::llvm_unreachable_internal("Corrupt redecls chain", "clang/lib/AST/ASTContext.cpp"
, 12418);
12419}

12421template <class T, std::enable_if_t<std::is_base_of_v<Decl, T>, bool> = true>
12422static T *getCommonDecl(T *X, T *Y) {
return cast_or_null<T>(
    getCommonDecl(const_cast<Decl *>(cast_or_null<Decl>(X)),
                  const_cast<Decl *>(cast_or_null<Decl>(Y))));
12426}

12428template <class T, std::enable_if_t<std::is_base_of_v<Decl, T>, bool> = true>
12429static T *getCommonDeclChecked(T *X, T *Y) {
return cast<T>(getCommonDecl(const_cast<Decl *>(cast<Decl>(X)),
                             const_cast<Decl *>(cast<Decl>(Y))));
12432}

12434static TemplateName getCommonTemplateName(ASTContext &Ctx, TemplateName X,
                                        TemplateName Y) {
if (X.getAsVoidPointer() == Y.getAsVoidPointer())
  return X;
// FIXME: There are cases here where we could find a common template name
//        with more sugar. For example one could be a SubstTemplateTemplate*
//        replacing the other.
TemplateName CX = Ctx.getCanonicalTemplateName(X);
if (CX.getAsVoidPointer() !=
    Ctx.getCanonicalTemplateName(Y).getAsVoidPointer())
  return TemplateName();
return CX;
12446}

12448static TemplateName
12449getCommonTemplateNameChecked(ASTContext &Ctx, TemplateName X, TemplateName Y) {
TemplateName R = getCommonTemplateName(Ctx, X, Y);
assert(R.getAsVoidPointer() != nullptr)(static_cast <bool> (R.getAsVoidPointer() != nullptr) ?
 void (0) : __assert_fail ("R.getAsVoidPointer() != nullptr",
 "clang/lib/AST/ASTContext.cpp", 12451, __extension__ __PRETTY_FUNCTION__
));
return R;
12453}

12455static auto getCommonTypes(ASTContext &Ctx, ArrayRef<QualType> Xs,
                         ArrayRef<QualType> Ys, bool Unqualified = false) {
assert(Xs.size() == Ys.size())(static_cast <bool> (Xs.size() == Ys.size()) ? void (0)
 : __assert_fail ("Xs.size() == Ys.size()", "clang/lib/AST/ASTContext.cpp"
, 12457, __extension__ __PRETTY_FUNCTION__));
SmallVector<QualType, 8> Rs(Xs.size());
for (size_t I = 0; I < Rs.size(); ++I)
  Rs[I] = Ctx.getCommonSugaredType(Xs[I], Ys[I], Unqualified);
return Rs;
12462}

12464template <class T>
12465static SourceLocation getCommonAttrLoc(const T *X, const T *Y) {
return X->getAttributeLoc() == Y->getAttributeLoc() ? X->getAttributeLoc()
                                                    : SourceLocation();
12468}

12470static TemplateArgument getCommonTemplateArgument(ASTContext &Ctx,
                                                const TemplateArgument &X,
                                                const TemplateArgument &Y) {
if (X.getKind() != Y.getKind())
  return TemplateArgument();

switch (X.getKind()) {
case TemplateArgument::ArgKind::Type:
  if (!Ctx.hasSameType(X.getAsType(), Y.getAsType()))
    return TemplateArgument();
  return TemplateArgument(
      Ctx.getCommonSugaredType(X.getAsType(), Y.getAsType()));
case TemplateArgument::ArgKind::NullPtr:
  if (!Ctx.hasSameType(X.getNullPtrType(), Y.getNullPtrType()))
    return TemplateArgument();
  return TemplateArgument(
      Ctx.getCommonSugaredType(X.getNullPtrType(), Y.getNullPtrType()),
      /*Unqualified=*/true);
case TemplateArgument::ArgKind::Expression:
  if (!Ctx.hasSameType(X.getAsExpr()->getType(), Y.getAsExpr()->getType()))
    return TemplateArgument();
  // FIXME: Try to keep the common sugar.
  return X;
case TemplateArgument::ArgKind::Template: {
  TemplateName TX = X.getAsTemplate(), TY = Y.getAsTemplate();
  TemplateName CTN = ::getCommonTemplateName(Ctx, TX, TY);
  if (!CTN.getAsVoidPointer())
    return TemplateArgument();
  return TemplateArgument(CTN);
}
case TemplateArgument::ArgKind::TemplateExpansion: {
  TemplateName TX = X.getAsTemplateOrTemplatePattern(),
               TY = Y.getAsTemplateOrTemplatePattern();
  TemplateName CTN = ::getCommonTemplateName(Ctx, TX, TY);
  if (!CTN.getAsVoidPointer())
    return TemplateName();
  auto NExpX = X.getNumTemplateExpansions();
  assert(NExpX == Y.getNumTemplateExpansions())(static_cast <bool> (NExpX == Y.getNumTemplateExpansions
()) ? void (0) : __assert_fail ("NExpX == Y.getNumTemplateExpansions()"
, "clang/lib/AST/ASTContext.cpp", 12507, __extension__ __PRETTY_FUNCTION__
));
  return TemplateArgument(CTN, NExpX);
}
default:
  // FIXME: Handle the other argument kinds.
  return X;
}
12514}

12516static bool getCommonTemplateArguments(ASTContext &Ctx,
                                     SmallVectorImpl<TemplateArgument> &R,
                                     ArrayRef<TemplateArgument> Xs,
                                     ArrayRef<TemplateArgument> Ys) {
if (Xs.size() != Ys.size())
  return true;
R.resize(Xs.size());
for (size_t I = 0; I < R.size(); ++I) {
  R[I] = getCommonTemplateArgument(Ctx, Xs[I], Ys[I]);
  if (R[I].isNull())
    return true;
}
return false;
12529}

12531static auto getCommonTemplateArguments(ASTContext &Ctx,
                                     ArrayRef<TemplateArgument> Xs,
                                     ArrayRef<TemplateArgument> Ys) {
SmallVector<TemplateArgument, 8> R;
bool Different = getCommonTemplateArguments(Ctx, R, Xs, Ys);
assert(!Different)(static_cast <bool> (!Different) ? void (0) : __assert_fail
 ("!Different", "clang/lib/AST/ASTContext.cpp", 12536, __extension__
 __PRETTY_FUNCTION__));
(void)Different;
return R;
12539}

12541template <class T>
12542static ElaboratedTypeKeyword getCommonTypeKeyword(const T *X, const T *Y) {
return X->getKeyword() == Y->getKeyword() ? X->getKeyword()
                                          : ElaboratedTypeKeyword::ETK_None;
12545}

12547template <class T>
12548static NestedNameSpecifier *getCommonNNS(ASTContext &Ctx, const T *X,
                                       const T *Y) {
// FIXME: Try to keep the common NNS sugar.
return X->getQualifier() == Y->getQualifier()
           ? X->getQualifier()
           : Ctx.getCanonicalNestedNameSpecifier(X->getQualifier());
12554}

12556template <class T>
12557static QualType getCommonElementType(ASTContext &Ctx, const T *X, const T *Y) {
return Ctx.getCommonSugaredType(X->getElementType(), Y->getElementType());
12559}

12561template <class T>
12562static QualType getCommonArrayElementType(ASTContext &Ctx, const T *X,
                                        Qualifiers &QX, const T *Y,
                                        Qualifiers &QY) {
QualType EX = X->getElementType(), EY = Y->getElementType();
QualType R = Ctx.getCommonSugaredType(EX, EY,
                                      /*Unqualified=*/true);
Qualifiers RQ = R.getQualifiers();
QX += EX.getQualifiers() - RQ;
QY += EY.getQualifiers() - RQ;
return R;
12572}

12574template <class T>
12575static QualType getCommonPointeeType(ASTContext &Ctx, const T *X, const T *Y) {
return Ctx.getCommonSugaredType(X->getPointeeType(), Y->getPointeeType());
12577}

12579template <class T> static auto *getCommonSizeExpr(ASTContext &Ctx, T *X, T *Y) {
assert(Ctx.hasSameExpr(X->getSizeExpr(), Y->getSizeExpr()))(static_cast <bool> (Ctx.hasSameExpr(X->getSizeExpr(
), Y->getSizeExpr())) ? void (0) : __assert_fail ("Ctx.hasSameExpr(X->getSizeExpr(), Y->getSizeExpr())"
, "clang/lib/AST/ASTContext.cpp", 12580, __extension__ __PRETTY_FUNCTION__
));
return X->getSizeExpr();
12582}

12584static auto getCommonSizeModifier(const ArrayType *X, const ArrayType *Y) {
assert(X->getSizeModifier() == Y->getSizeModifier())(static_cast <bool> (X->getSizeModifier() == Y->getSizeModifier
()) ? void (0) : __assert_fail ("X->getSizeModifier() == Y->getSizeModifier()"
, "clang/lib/AST/ASTContext.cpp", 12585, __extension__ __PRETTY_FUNCTION__
));
return X->getSizeModifier();
12587}

12589static auto getCommonIndexTypeCVRQualifiers(const ArrayType *X,
                                          const ArrayType *Y) {
assert(X->getIndexTypeCVRQualifiers() == Y->getIndexTypeCVRQualifiers())(static_cast <bool> (X->getIndexTypeCVRQualifiers() ==
 Y->getIndexTypeCVRQualifiers()) ? void (0) : __assert_fail
 ("X->getIndexTypeCVRQualifiers() == Y->getIndexTypeCVRQualifiers()"
, "clang/lib/AST/ASTContext.cpp", 12591, __extension__ __PRETTY_FUNCTION__
));
return X->getIndexTypeCVRQualifiers();
12593}

12595// Merges two type lists such that the resulting vector will contain
12596// each type (in a canonical sense) only once, in the order they appear
12597// from X to Y. If they occur in both X and Y, the result will contain
12598// the common sugared type between them.
12599static void mergeTypeLists(ASTContext &Ctx, SmallVectorImpl<QualType> &Out,
                         ArrayRef<QualType> X, ArrayRef<QualType> Y) {
llvm::DenseMap<QualType, unsigned> Found;
for (auto Ts : {X, Y}) {
  for (QualType T : Ts) {
    auto Res = Found.try_emplace(Ctx.getCanonicalType(T), Out.size());
    if (!Res.second) {
      QualType &U = Out[Res.first->second];
      U = Ctx.getCommonSugaredType(U, T);
    } else {
      Out.emplace_back(T);
    }
  }
}
12613}

12615FunctionProtoType::ExceptionSpecInfo
12616ASTContext::mergeExceptionSpecs(FunctionProtoType::ExceptionSpecInfo ESI1,
                              FunctionProtoType::ExceptionSpecInfo ESI2,
                              SmallVectorImpl<QualType> &ExceptionTypeStorage,
                              bool AcceptDependent) {
ExceptionSpecificationType EST1 = ESI1.Type, EST2 = ESI2.Type;

// If either of them can throw anything, that is the result.
for (auto I : {EST_None, EST_MSAny, EST_NoexceptFalse}) {
  if (EST1 == I)
    return ESI1;
  if (EST2 == I)
    return ESI2;
}

// If either of them is non-throwing, the result is the other.
for (auto I :
     {EST_NoThrow, EST_DynamicNone, EST_BasicNoexcept, EST_NoexceptTrue}) {
  if (EST1 == I)
    return ESI2;
  if (EST2 == I)
    return ESI1;
}

// If we're left with value-dependent computed noexcept expressions, we're
// stuck. Before C++17, we can just drop the exception specification entirely,
// since it's not actually part of the canonical type. And this should never
// happen in C++17, because it would mean we were computing the composite
// pointer type of dependent types, which should never happen.
if (EST1 == EST_DependentNoexcept || EST2 == EST_DependentNoexcept) {
  assert(AcceptDependent &&(static_cast <bool> (AcceptDependent && "computing composite pointer type of dependent types"
) ? void (0) : __assert_fail ("AcceptDependent && \"computing composite pointer type of dependent types\""
, "clang/lib/AST/ASTContext.cpp", 12646, __extension__ __PRETTY_FUNCTION__
))
         "computing composite pointer type of dependent types")(static_cast <bool> (AcceptDependent && "computing composite pointer type of dependent types"
) ? void (0) : __assert_fail ("AcceptDependent && \"computing composite pointer type of dependent types\""
, "clang/lib/AST/ASTContext.cpp", 12646, __extension__ __PRETTY_FUNCTION__
));
  return FunctionProtoType::ExceptionSpecInfo();
}

// Switch over the possibilities so that people adding new values know to
// update this function.
switch (EST1) {
case EST_None:
case EST_DynamicNone:
case EST_MSAny:
case EST_BasicNoexcept:
case EST_DependentNoexcept:
case EST_NoexceptFalse:
case EST_NoexceptTrue:
case EST_NoThrow:
  llvm_unreachable("These ESTs should be handled above")::llvm::llvm_unreachable_internal("These ESTs should be handled above"
, "clang/lib/AST/ASTContext.cpp", 12661);

case EST_Dynamic: {
  // This is the fun case: both exception specifications are dynamic. Form
  // the union of the two lists.
  assert(EST2 == EST_Dynamic && "other cases should already be handled")(static_cast <bool> (EST2 == EST_Dynamic && "other cases should already be handled"
) ? void (0) : __assert_fail ("EST2 == EST_Dynamic && \"other cases should already be handled\""
, "clang/lib/AST/ASTContext.cpp", 12666, __extension__ __PRETTY_FUNCTION__
));
  mergeTypeLists(*this, ExceptionTypeStorage, ESI1.Exceptions,
                 ESI2.Exceptions);
  FunctionProtoType::ExceptionSpecInfo Result(EST_Dynamic);
  Result.Exceptions = ExceptionTypeStorage;
  return Result;
}

case EST_Unevaluated:
case EST_Uninstantiated:
case EST_Unparsed:
  llvm_unreachable("shouldn't see unresolved exception specifications here")::llvm::llvm_unreachable_internal("shouldn't see unresolved exception specifications here"
, "clang/lib/AST/ASTContext.cpp", 12677);
}

llvm_unreachable("invalid ExceptionSpecificationType")::llvm::llvm_unreachable_internal("invalid ExceptionSpecificationType"
, "clang/lib/AST/ASTContext.cpp", 12680);
12681}

12683static QualType getCommonNonSugarTypeNode(ASTContext &Ctx, const Type *X,
                                        Qualifiers &QX, const Type *Y,
                                        Qualifiers &QY) {
Type::TypeClass TC = X->getTypeClass();
assert(TC == Y->getTypeClass())(static_cast <bool> (TC == Y->getTypeClass()) ? void
 (0) : __assert_fail ("TC == Y->getTypeClass()", "clang/lib/AST/ASTContext.cpp"
, 12687, __extension__ __PRETTY_FUNCTION__));
switch (TC) {
12689#define UNEXPECTED_TYPE(Class, Kind)                                           \
case Type::Class:                                                            \
  llvm_unreachable("Unexpected " Kind ": " #Class)::llvm::llvm_unreachable_internal("Unexpected " Kind ": " #Class
, "clang/lib/AST/ASTContext.cpp", 12691);

12693#define NON_CANONICAL_TYPE(Class, Base) UNEXPECTED_TYPE(Class, "non-canonical")
12694#define TYPE(Class, Base)
12695#include "clang/AST/TypeNodes.inc"

12697#define SUGAR_FREE_TYPE(Class) UNEXPECTED_TYPE(Class, "sugar-free")
  SUGAR_FREE_TYPE(Builtin)
  SUGAR_FREE_TYPE(Decltype)
  SUGAR_FREE_TYPE(DeducedTemplateSpecialization)
  SUGAR_FREE_TYPE(DependentBitInt)
  SUGAR_FREE_TYPE(Enum)
  SUGAR_FREE_TYPE(BitInt)
  SUGAR_FREE_TYPE(ObjCInterface)
  SUGAR_FREE_TYPE(Record)
  SUGAR_FREE_TYPE(SubstTemplateTypeParmPack)
  SUGAR_FREE_TYPE(UnresolvedUsing)
12708#undef SUGAR_FREE_TYPE
12709#define NON_UNIQUE_TYPE(Class) UNEXPECTED_TYPE(Class, "non-unique")
  NON_UNIQUE_TYPE(TypeOfExpr)
  NON_UNIQUE_TYPE(VariableArray)
12712#undef NON_UNIQUE_TYPE

  UNEXPECTED_TYPE(TypeOf, "sugar")

12716#undef UNEXPECTED_TYPE

case Type::Auto: {
  const auto *AX = cast<AutoType>(X), *AY = cast<AutoType>(Y);
  assert(AX->getDeducedType().isNull())(static_cast <bool> (AX->getDeducedType().isNull()) ?
 void (0) : __assert_fail ("AX->getDeducedType().isNull()"
, "clang/lib/AST/ASTContext.cpp", 12720, __extension__ __PRETTY_FUNCTION__
));
  assert(AY->getDeducedType().isNull())(static_cast <bool> (AY->getDeducedType().isNull()) ?
 void (0) : __assert_fail ("AY->getDeducedType().isNull()"
, "clang/lib/AST/ASTContext.cpp", 12721, __extension__ __PRETTY_FUNCTION__
));
  assert(AX->getKeyword() == AY->getKeyword())(static_cast <bool> (AX->getKeyword() == AY->getKeyword
()) ? void (0) : __assert_fail ("AX->getKeyword() == AY->getKeyword()"
, "clang/lib/AST/ASTContext.cpp", 12722, __extension__ __PRETTY_FUNCTION__
));
  assert(AX->isInstantiationDependentType() ==(static_cast <bool> (AX->isInstantiationDependentType
() == AY->isInstantiationDependentType()) ? void (0) : __assert_fail
 ("AX->isInstantiationDependentType() == AY->isInstantiationDependentType()"
, "clang/lib/AST/ASTContext.cpp", 12724, __extension__ __PRETTY_FUNCTION__
))
         AY->isInstantiationDependentType())(static_cast <bool> (AX->isInstantiationDependentType
() == AY->isInstantiationDependentType()) ? void (0) : __assert_fail
 ("AX->isInstantiationDependentType() == AY->isInstantiationDependentType()"
, "clang/lib/AST/ASTContext.cpp", 12724, __extension__ __PRETTY_FUNCTION__
));
  auto As = getCommonTemplateArguments(Ctx, AX->getTypeConstraintArguments(),
                                       AY->getTypeConstraintArguments());
  return Ctx.getAutoType(QualType(), AX->getKeyword(),
                         AX->isInstantiationDependentType(),
                         AX->containsUnexpandedParameterPack(),
                         getCommonDeclChecked(AX->getTypeConstraintConcept(),
                                              AY->getTypeConstraintConcept()),
                         As);
}
case Type::IncompleteArray: {
  const auto *AX = cast<IncompleteArrayType>(X),
             *AY = cast<IncompleteArrayType>(Y);
  return Ctx.getIncompleteArrayType(
      getCommonArrayElementType(Ctx, AX, QX, AY, QY),
      getCommonSizeModifier(AX, AY), getCommonIndexTypeCVRQualifiers(AX, AY));
}
case Type::DependentSizedArray: {
  const auto *AX = cast<DependentSizedArrayType>(X),
             *AY = cast<DependentSizedArrayType>(Y);
  return Ctx.getDependentSizedArrayType(
      getCommonArrayElementType(Ctx, AX, QX, AY, QY),
      getCommonSizeExpr(Ctx, AX, AY), getCommonSizeModifier(AX, AY),
      getCommonIndexTypeCVRQualifiers(AX, AY),
      AX->getBracketsRange() == AY->getBracketsRange()
          ? AX->getBracketsRange()
          : SourceRange());
}
case Type::ConstantArray: {
  const auto *AX = cast<ConstantArrayType>(X),
             *AY = cast<ConstantArrayType>(Y);
  assert(AX->getSize() == AY->getSize())(static_cast <bool> (AX->getSize() == AY->getSize
()) ? void (0) : __assert_fail ("AX->getSize() == AY->getSize()"
, "clang/lib/AST/ASTContext.cpp", 12755, __extension__ __PRETTY_FUNCTION__
));
  const Expr *SizeExpr = Ctx.hasSameExpr(AX->getSizeExpr(), AY->getSizeExpr())
                             ? AX->getSizeExpr()
                             : nullptr;
  return Ctx.getConstantArrayType(
      getCommonArrayElementType(Ctx, AX, QX, AY, QY), AX->getSize(), SizeExpr,
      getCommonSizeModifier(AX, AY), getCommonIndexTypeCVRQualifiers(AX, AY));
}
case Type::Atomic: {
  const auto *AX = cast<AtomicType>(X), *AY = cast<AtomicType>(Y);
  return Ctx.getAtomicType(
      Ctx.getCommonSugaredType(AX->getValueType(), AY->getValueType()));
}
case Type::Complex: {
  const auto *CX = cast<ComplexType>(X), *CY = cast<ComplexType>(Y);
  return Ctx.getComplexType(getCommonArrayElementType(Ctx, CX, QX, CY, QY));
}
case Type::Pointer: {
  const auto *PX = cast<PointerType>(X), *PY = cast<PointerType>(Y);
  return Ctx.getPointerType(getCommonPointeeType(Ctx, PX, PY));
}
case Type::BlockPointer: {
  const auto *PX = cast<BlockPointerType>(X), *PY = cast<BlockPointerType>(Y);
  return Ctx.getBlockPointerType(getCommonPointeeType(Ctx, PX, PY));
}
case Type::ObjCObjectPointer: {
  const auto *PX = cast<ObjCObjectPointerType>(X),
             *PY = cast<ObjCObjectPointerType>(Y);
  return Ctx.getObjCObjectPointerType(getCommonPointeeType(Ctx, PX, PY));
}
case Type::MemberPointer: {
  const auto *PX = cast<MemberPointerType>(X),
             *PY = cast<MemberPointerType>(Y);
  return Ctx.getMemberPointerType(
      getCommonPointeeType(Ctx, PX, PY),
      Ctx.getCommonSugaredType(QualType(PX->getClass(), 0),
                               QualType(PY->getClass(), 0))
          .getTypePtr());
}
case Type::LValueReference: {
  const auto *PX = cast<LValueReferenceType>(X),
             *PY = cast<LValueReferenceType>(Y);
  // FIXME: Preserve PointeeTypeAsWritten.
  return Ctx.getLValueReferenceType(getCommonPointeeType(Ctx, PX, PY),
                                    PX->isSpelledAsLValue() ||
                                        PY->isSpelledAsLValue());
}
case Type::RValueReference: {
  const auto *PX = cast<RValueReferenceType>(X),
             *PY = cast<RValueReferenceType>(Y);
  // FIXME: Preserve PointeeTypeAsWritten.
  return Ctx.getRValueReferenceType(getCommonPointeeType(Ctx, PX, PY));
}
case Type::DependentAddressSpace: {
  const auto *PX = cast<DependentAddressSpaceType>(X),
             *PY = cast<DependentAddressSpaceType>(Y);
  assert(Ctx.hasSameExpr(PX->getAddrSpaceExpr(), PY->getAddrSpaceExpr()))(static_cast <bool> (Ctx.hasSameExpr(PX->getAddrSpaceExpr
(), PY->getAddrSpaceExpr())) ? void (0) : __assert_fail ("Ctx.hasSameExpr(PX->getAddrSpaceExpr(), PY->getAddrSpaceExpr())"
, "clang/lib/AST/ASTContext.cpp", 12811, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getDependentAddressSpaceType(getCommonPointeeType(Ctx, PX, PY),
                                          PX->getAddrSpaceExpr(),
                                          getCommonAttrLoc(PX, PY));
}
case Type::FunctionNoProto: {
  const auto *FX = cast<FunctionNoProtoType>(X),
             *FY = cast<FunctionNoProtoType>(Y);
  assert(FX->getExtInfo() == FY->getExtInfo())(static_cast <bool> (FX->getExtInfo() == FY->getExtInfo
()) ? void (0) : __assert_fail ("FX->getExtInfo() == FY->getExtInfo()"
, "clang/lib/AST/ASTContext.cpp", 12819, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getFunctionNoProtoType(
      Ctx.getCommonSugaredType(FX->getReturnType(), FY->getReturnType()),
      FX->getExtInfo());
}
case Type::FunctionProto: {
  const auto *FX = cast<FunctionProtoType>(X),
             *FY = cast<FunctionProtoType>(Y);
  FunctionProtoType::ExtProtoInfo EPIX = FX->getExtProtoInfo(),
                                  EPIY = FY->getExtProtoInfo();
  assert(EPIX.ExtInfo == EPIY.ExtInfo)(static_cast <bool> (EPIX.ExtInfo == EPIY.ExtInfo) ? void
 (0) : __assert_fail ("EPIX.ExtInfo == EPIY.ExtInfo", "clang/lib/AST/ASTContext.cpp"
, 12829, __extension__ __PRETTY_FUNCTION__));
  assert(EPIX.ExtParameterInfos == EPIY.ExtParameterInfos)(static_cast <bool> (EPIX.ExtParameterInfos == EPIY.ExtParameterInfos
) ? void (0) : __assert_fail ("EPIX.ExtParameterInfos == EPIY.ExtParameterInfos"
, "clang/lib/AST/ASTContext.cpp", 12830, __extension__ __PRETTY_FUNCTION__
));
  assert(EPIX.RefQualifier == EPIY.RefQualifier)(static_cast <bool> (EPIX.RefQualifier == EPIY.RefQualifier
) ? void (0) : __assert_fail ("EPIX.RefQualifier == EPIY.RefQualifier"
, "clang/lib/AST/ASTContext.cpp", 12831, __extension__ __PRETTY_FUNCTION__
));
  assert(EPIX.TypeQuals == EPIY.TypeQuals)(static_cast <bool> (EPIX.TypeQuals == EPIY.TypeQuals) ?
 void (0) : __assert_fail ("EPIX.TypeQuals == EPIY.TypeQuals"
, "clang/lib/AST/ASTContext.cpp", 12832, __extension__ __PRETTY_FUNCTION__
));
  assert(EPIX.Variadic == EPIY.Variadic)(static_cast <bool> (EPIX.Variadic == EPIY.Variadic) ? void
 (0) : __assert_fail ("EPIX.Variadic == EPIY.Variadic", "clang/lib/AST/ASTContext.cpp"
, 12833, __extension__ __PRETTY_FUNCTION__));

  // FIXME: Can we handle an empty EllipsisLoc?
  //        Use emtpy EllipsisLoc if X and Y differ.

  EPIX.HasTrailingReturn = EPIX.HasTrailingReturn && EPIY.HasTrailingReturn;

  QualType R =
      Ctx.getCommonSugaredType(FX->getReturnType(), FY->getReturnType());
  auto P = getCommonTypes(Ctx, FX->param_types(), FY->param_types(),
                          /*Unqualified=*/true);

  SmallVector<QualType, 8> Exceptions;
  EPIX.ExceptionSpec = Ctx.mergeExceptionSpecs(
      EPIX.ExceptionSpec, EPIY.ExceptionSpec, Exceptions, true);
  return Ctx.getFunctionType(R, P, EPIX);
}
case Type::ObjCObject: {
  const auto *OX = cast<ObjCObjectType>(X), *OY = cast<ObjCObjectType>(Y);
  assert((static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
))
      std::equal(OX->getProtocols().begin(), OX->getProtocols().end(),(static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
))
                 OY->getProtocols().begin(), OY->getProtocols().end(),(static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
))
                 [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) {(static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
))
                   return P0->getCanonicalDecl() == P1->getCanonicalDecl();(static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
))
                 }) &&(static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
))
      "protocol lists must be the same")(static_cast <bool> (std::equal(OX->getProtocols().begin
(), OX->getProtocols().end(), OY->getProtocols().begin(
), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0
, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl
() == P1->getCanonicalDecl(); }) && "protocol lists must be the same"
) ? void (0) : __assert_fail ("std::equal(OX->getProtocols().begin(), OX->getProtocols().end(), OY->getProtocols().begin(), OY->getProtocols().end(), [](const ObjCProtocolDecl *P0, const ObjCProtocolDecl *P1) { return P0->getCanonicalDecl() == P1->getCanonicalDecl(); }) && \"protocol lists must be the same\""
, "clang/lib/AST/ASTContext.cpp", 12858, __extension__ __PRETTY_FUNCTION__
));
  auto TAs = getCommonTypes(Ctx, OX->getTypeArgsAsWritten(),
                            OY->getTypeArgsAsWritten());
  return Ctx.getObjCObjectType(
      Ctx.getCommonSugaredType(OX->getBaseType(), OY->getBaseType()), TAs,
      OX->getProtocols(),
      OX->isKindOfTypeAsWritten() && OY->isKindOfTypeAsWritten());
}
case Type::ConstantMatrix: {
  const auto *MX = cast<ConstantMatrixType>(X),
             *MY = cast<ConstantMatrixType>(Y);
  assert(MX->getNumRows() == MY->getNumRows())(static_cast <bool> (MX->getNumRows() == MY->getNumRows
()) ? void (0) : __assert_fail ("MX->getNumRows() == MY->getNumRows()"
, "clang/lib/AST/ASTContext.cpp", 12869, __extension__ __PRETTY_FUNCTION__
));
  assert(MX->getNumColumns() == MY->getNumColumns())(static_cast <bool> (MX->getNumColumns() == MY->getNumColumns
()) ? void (0) : __assert_fail ("MX->getNumColumns() == MY->getNumColumns()"
, "clang/lib/AST/ASTContext.cpp", 12870, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getConstantMatrixType(getCommonElementType(Ctx, MX, MY),
                                   MX->getNumRows(), MX->getNumColumns());
}
case Type::DependentSizedMatrix: {
  const auto *MX = cast<DependentSizedMatrixType>(X),
             *MY = cast<DependentSizedMatrixType>(Y);
  assert(Ctx.hasSameExpr(MX->getRowExpr(), MY->getRowExpr()))(static_cast <bool> (Ctx.hasSameExpr(MX->getRowExpr(
), MY->getRowExpr())) ? void (0) : __assert_fail ("Ctx.hasSameExpr(MX->getRowExpr(), MY->getRowExpr())"
, "clang/lib/AST/ASTContext.cpp", 12877, __extension__ __PRETTY_FUNCTION__
));
  assert(Ctx.hasSameExpr(MX->getColumnExpr(), MY->getColumnExpr()))(static_cast <bool> (Ctx.hasSameExpr(MX->getColumnExpr
(), MY->getColumnExpr())) ? void (0) : __assert_fail ("Ctx.hasSameExpr(MX->getColumnExpr(), MY->getColumnExpr())"
, "clang/lib/AST/ASTContext.cpp", 12878, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getDependentSizedMatrixType(
      getCommonElementType(Ctx, MX, MY), MX->getRowExpr(),
      MX->getColumnExpr(), getCommonAttrLoc(MX, MY));
}
case Type::Vector: {
  const auto *VX = cast<VectorType>(X), *VY = cast<VectorType>(Y);
  assert(VX->getNumElements() == VY->getNumElements())(static_cast <bool> (VX->getNumElements() == VY->
getNumElements()) ? void (0) : __assert_fail ("VX->getNumElements() == VY->getNumElements()"
, "clang/lib/AST/ASTContext.cpp", 12885, __extension__ __PRETTY_FUNCTION__
));
  assert(VX->getVectorKind() == VY->getVectorKind())(static_cast <bool> (VX->getVectorKind() == VY->getVectorKind
()) ? void (0) : __assert_fail ("VX->getVectorKind() == VY->getVectorKind()"
, "clang/lib/AST/ASTContext.cpp", 12886, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getVectorType(getCommonElementType(Ctx, VX, VY),
                           VX->getNumElements(), VX->getVectorKind());
}
case Type::ExtVector: {
  const auto *VX = cast<ExtVectorType>(X), *VY = cast<ExtVectorType>(Y);
  assert(VX->getNumElements() == VY->getNumElements())(static_cast <bool> (VX->getNumElements() == VY->
getNumElements()) ? void (0) : __assert_fail ("VX->getNumElements() == VY->getNumElements()"
, "clang/lib/AST/ASTContext.cpp", 12892, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getExtVectorType(getCommonElementType(Ctx, VX, VY),
                              VX->getNumElements());
}
case Type::DependentSizedExtVector: {
  const auto *VX = cast<DependentSizedExtVectorType>(X),
             *VY = cast<DependentSizedExtVectorType>(Y);
  return Ctx.getDependentSizedExtVectorType(getCommonElementType(Ctx, VX, VY),
                                            getCommonSizeExpr(Ctx, VX, VY),
                                            getCommonAttrLoc(VX, VY));
}
case Type::DependentVector: {
  const auto *VX = cast<DependentVectorType>(X),
             *VY = cast<DependentVectorType>(Y);
  assert(VX->getVectorKind() == VY->getVectorKind())(static_cast <bool> (VX->getVectorKind() == VY->getVectorKind
()) ? void (0) : __assert_fail ("VX->getVectorKind() == VY->getVectorKind()"
, "clang/lib/AST/ASTContext.cpp", 12906, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getDependentVectorType(
      getCommonElementType(Ctx, VX, VY), getCommonSizeExpr(Ctx, VX, VY),
      getCommonAttrLoc(VX, VY), VX->getVectorKind());
}
case Type::InjectedClassName: {
  const auto *IX = cast<InjectedClassNameType>(X),
             *IY = cast<InjectedClassNameType>(Y);
  return Ctx.getInjectedClassNameType(
      getCommonDeclChecked(IX->getDecl(), IY->getDecl()),
      Ctx.getCommonSugaredType(IX->getInjectedSpecializationType(),
                               IY->getInjectedSpecializationType()));
}
case Type::TemplateSpecialization: {
  const auto *TX = cast<TemplateSpecializationType>(X),
             *TY = cast<TemplateSpecializationType>(Y);
  auto As = getCommonTemplateArguments(Ctx, TX->template_arguments(),
                                       TY->template_arguments());
  return Ctx.getTemplateSpecializationType(
      ::getCommonTemplateNameChecked(Ctx, TX->getTemplateName(),
                                     TY->getTemplateName()),
      As, X->getCanonicalTypeInternal());
}
case Type::DependentName: {
  const auto *NX = cast<DependentNameType>(X),
             *NY = cast<DependentNameType>(Y);
  assert(NX->getIdentifier() == NY->getIdentifier())(static_cast <bool> (NX->getIdentifier() == NY->getIdentifier
()) ? void (0) : __assert_fail ("NX->getIdentifier() == NY->getIdentifier()"
, "clang/lib/AST/ASTContext.cpp", 12932, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getDependentNameType(
      getCommonTypeKeyword(NX, NY), getCommonNNS(Ctx, NX, NY),
      NX->getIdentifier(), NX->getCanonicalTypeInternal());
}
case Type::DependentTemplateSpecialization: {
  const auto *TX = cast<DependentTemplateSpecializationType>(X),
             *TY = cast<DependentTemplateSpecializationType>(Y);
  assert(TX->getIdentifier() == TY->getIdentifier())(static_cast <bool> (TX->getIdentifier() == TY->getIdentifier
()) ? void (0) : __assert_fail ("TX->getIdentifier() == TY->getIdentifier()"
, "clang/lib/AST/ASTContext.cpp", 12940, __extension__ __PRETTY_FUNCTION__
));
  auto As = getCommonTemplateArguments(Ctx, TX->template_arguments(),
                                       TY->template_arguments());
  return Ctx.getDependentTemplateSpecializationType(
      getCommonTypeKeyword(TX, TY), getCommonNNS(Ctx, TX, TY),
      TX->getIdentifier(), As);
}
case Type::UnaryTransform: {
  const auto *TX = cast<UnaryTransformType>(X),
             *TY = cast<UnaryTransformType>(Y);
  assert(TX->getUTTKind() == TY->getUTTKind())(static_cast <bool> (TX->getUTTKind() == TY->getUTTKind
()) ? void (0) : __assert_fail ("TX->getUTTKind() == TY->getUTTKind()"
, "clang/lib/AST/ASTContext.cpp", 12950, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getUnaryTransformType(
      Ctx.getCommonSugaredType(TX->getBaseType(), TY->getBaseType()),
      Ctx.getCommonSugaredType(TX->getUnderlyingType(),
                               TY->getUnderlyingType()),
      TX->getUTTKind());
}
case Type::PackExpansion: {
  const auto *PX = cast<PackExpansionType>(X),
             *PY = cast<PackExpansionType>(Y);
  assert(PX->getNumExpansions() == PY->getNumExpansions())(static_cast <bool> (PX->getNumExpansions() == PY->
getNumExpansions()) ? void (0) : __assert_fail ("PX->getNumExpansions() == PY->getNumExpansions()"
, "clang/lib/AST/ASTContext.cpp", 12960, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getPackExpansionType(
      Ctx.getCommonSugaredType(PX->getPattern(), PY->getPattern()),
      PX->getNumExpansions(), false);
}
case Type::Pipe: {
  const auto *PX = cast<PipeType>(X), *PY = cast<PipeType>(Y);
  assert(PX->isReadOnly() == PY->isReadOnly())(static_cast <bool> (PX->isReadOnly() == PY->isReadOnly
()) ? void (0) : __assert_fail ("PX->isReadOnly() == PY->isReadOnly()"
, "clang/lib/AST/ASTContext.cpp", 12967, __extension__ __PRETTY_FUNCTION__
));
  auto MP = PX->isReadOnly() ? &ASTContext::getReadPipeType
                             : &ASTContext::getWritePipeType;
  return (Ctx.*MP)(getCommonElementType(Ctx, PX, PY));
}
case Type::TemplateTypeParm: {
  const auto *TX = cast<TemplateTypeParmType>(X),
             *TY = cast<TemplateTypeParmType>(Y);
  assert(TX->getDepth() == TY->getDepth())(static_cast <bool> (TX->getDepth() == TY->getDepth
()) ? void (0) : __assert_fail ("TX->getDepth() == TY->getDepth()"
, "clang/lib/AST/ASTContext.cpp", 12975, __extension__ __PRETTY_FUNCTION__
));
  assert(TX->getIndex() == TY->getIndex())(static_cast <bool> (TX->getIndex() == TY->getIndex
()) ? void (0) : __assert_fail ("TX->getIndex() == TY->getIndex()"
, "clang/lib/AST/ASTContext.cpp", 12976, __extension__ __PRETTY_FUNCTION__
));
  assert(TX->isParameterPack() == TY->isParameterPack())(static_cast <bool> (TX->isParameterPack() == TY->
isParameterPack()) ? void (0) : __assert_fail ("TX->isParameterPack() == TY->isParameterPack()"
, "clang/lib/AST/ASTContext.cpp", 12977, __extension__ __PRETTY_FUNCTION__
));
  return Ctx.getTemplateTypeParmType(
      TX->getDepth(), TX->getIndex(), TX->isParameterPack(),
      getCommonDecl(TX->getDecl(), TY->getDecl()));
}
}
llvm_unreachable("Unknown Type Class")::llvm::llvm_unreachable_internal("Unknown Type Class", "clang/lib/AST/ASTContext.cpp"
, 12983);
12984}

12986static QualType getCommonSugarTypeNode(ASTContext &Ctx, const Type *X,
                                     const Type *Y,
                                     SplitQualType Underlying) {
Type::TypeClass TC = X->getTypeClass();
if (TC != Y->getTypeClass())
  return QualType();
switch (TC) {
12993#define UNEXPECTED_TYPE(Class, Kind)                                           \
case Type::Class:                                                            \
  llvm_unreachable("Unexpected " Kind ": " #Class)::llvm::llvm_unreachable_internal("Unexpected " Kind ": " #Class
, "clang/lib/AST/ASTContext.cpp", 12995);
12996#define TYPE(Class, Base)
12997#define DEPENDENT_TYPE(Class, Base) UNEXPECTED_TYPE(Class, "dependent")
12998#include "clang/AST/TypeNodes.inc"

13000#define CANONICAL_TYPE(Class) UNEXPECTED_TYPE(Class, "canonical")
  CANONICAL_TYPE(Atomic)
  CANONICAL_TYPE(BitInt)
  CANONICAL_TYPE(BlockPointer)
  CANONICAL_TYPE(Builtin)
  CANONICAL_TYPE(Complex)
  CANONICAL_TYPE(ConstantArray)
  CANONICAL_TYPE(ConstantMatrix)
  CANONICAL_TYPE(Enum)
  CANONICAL_TYPE(ExtVector)
  CANONICAL_TYPE(FunctionNoProto)
  CANONICAL_TYPE(FunctionProto)
  CANONICAL_TYPE(IncompleteArray)
  CANONICAL_TYPE(LValueReference)
  CANONICAL_TYPE(MemberPointer)
  CANONICAL_TYPE(ObjCInterface)
  CANONICAL_TYPE(ObjCObject)
  CANONICAL_TYPE(ObjCObjectPointer)
  CANONICAL_TYPE(Pipe)
  CANONICAL_TYPE(Pointer)
  CANONICAL_TYPE(Record)
  CANONICAL_TYPE(RValueReference)
  CANONICAL_TYPE(VariableArray)
  CANONICAL_TYPE(Vector)
13024#undef CANONICAL_TYPE

13026#undef UNEXPECTED_TYPE

case Type::Adjusted: {
  const auto *AX = cast<AdjustedType>(X), *AY = cast<AdjustedType>(Y);
  QualType OX = AX->getOriginalType(), OY = AY->getOriginalType();
  if (!Ctx.hasSameType(OX, OY))
    return QualType();
  // FIXME: It's inefficient to have to unify the original types.
  return Ctx.getAdjustedType(Ctx.getCommonSugaredType(OX, OY),
                             Ctx.getQualifiedType(Underlying));
}
case Type::Decayed: {
  const auto *DX = cast<DecayedType>(X), *DY = cast<DecayedType>(Y);
  QualType OX = DX->getOriginalType(), OY = DY->getOriginalType();
  if (!Ctx.hasSameType(OX, OY))
    return QualType();
  // FIXME: It's inefficient to have to unify the original types.
  return Ctx.getDecayedType(Ctx.getCommonSugaredType(OX, OY),
                            Ctx.getQualifiedType(Underlying));
}
case Type::Attributed: {
  const auto *AX = cast<AttributedType>(X), *AY = cast<AttributedType>(Y);
  AttributedType::Kind Kind = AX->getAttrKind();
  if (Kind != AY->getAttrKind())
    return QualType();
  QualType MX = AX->getModifiedType(), MY = AY->getModifiedType();
  if (!Ctx.hasSameType(MX, MY))
    return QualType();
  // FIXME: It's inefficient to have to unify the modified types.
  return Ctx.getAttributedType(Kind, Ctx.getCommonSugaredType(MX, MY),
                               Ctx.getQualifiedType(Underlying));
}
case Type::BTFTagAttributed: {
  const auto *BX = cast<BTFTagAttributedType>(X);
  const BTFTypeTagAttr *AX = BX->getAttr();
  // The attribute is not uniqued, so just compare the tag.
  if (AX->getBTFTypeTag() !=
      cast<BTFTagAttributedType>(Y)->getAttr()->getBTFTypeTag())
    return QualType();
  return Ctx.getBTFTagAttributedType(AX, Ctx.getQualifiedType(Underlying));
}
case Type::Auto: {
  const auto *AX = cast<AutoType>(X), *AY = cast<AutoType>(Y);

  AutoTypeKeyword KW = AX->getKeyword();
  if (KW != AY->getKeyword())
    return QualType();

  ConceptDecl *CD = ::getCommonDecl(AX->getTypeConstraintConcept(),
                                    AY->getTypeConstraintConcept());
  SmallVector<TemplateArgument, 8> As;
  if (CD &&
      getCommonTemplateArguments(Ctx, As, AX->getTypeConstraintArguments(),
                                 AY->getTypeConstraintArguments())) {
    CD = nullptr; // The arguments differ, so make it unconstrained.
    As.clear();
  }

  // Both auto types can't be dependent, otherwise they wouldn't have been
  // sugar. This implies they can't contain unexpanded packs either.
  return Ctx.getAutoType(Ctx.getQualifiedType(Underlying), AX->getKeyword(),
                         /*IsDependent=*/false, /*IsPack=*/false, CD, As);
}
case Type::Decltype:
  return QualType();
case Type::DeducedTemplateSpecialization:
  // FIXME: Try to merge these.
  return QualType();

case Type::Elaborated: {
  const auto *EX = cast<ElaboratedType>(X), *EY = cast<ElaboratedType>(Y);
  return Ctx.getElaboratedType(
      ::getCommonTypeKeyword(EX, EY), ::getCommonNNS(Ctx, EX, EY),
      Ctx.getQualifiedType(Underlying),
      ::getCommonDecl(EX->getOwnedTagDecl(), EY->getOwnedTagDecl()));
}
case Type::MacroQualified: {
  const auto *MX = cast<MacroQualifiedType>(X),
             *MY = cast<MacroQualifiedType>(Y);
  const IdentifierInfo *IX = MX->getMacroIdentifier();
  if (IX != MY->getMacroIdentifier())
    return QualType();
  return Ctx.getMacroQualifiedType(Ctx.getQualifiedType(Underlying), IX);
}
case Type::SubstTemplateTypeParm: {
  const auto *SX = cast<SubstTemplateTypeParmType>(X),
             *SY = cast<SubstTemplateTypeParmType>(Y);
  Decl *CD =
      ::getCommonDecl(SX->getAssociatedDecl(), SY->getAssociatedDecl());
  if (!CD)
    return QualType();
  unsigned Index = SX->getIndex();
  if (Index != SY->getIndex())
    return QualType();
  auto PackIndex = SX->getPackIndex();
  if (PackIndex != SY->getPackIndex())
    return QualType();
  return Ctx.getSubstTemplateTypeParmType(Ctx.getQualifiedType(Underlying),
                                          CD, Index, PackIndex);
}
case Type::ObjCTypeParam:
  // FIXME: Try to merge these.
  return QualType();
case Type::Paren:
  return Ctx.getParenType(Ctx.getQualifiedType(Underlying));

case Type::TemplateSpecialization: {
  const auto *TX = cast<TemplateSpecializationType>(X),
             *TY = cast<TemplateSpecializationType>(Y);
  TemplateName CTN = ::getCommonTemplateName(Ctx, TX->getTemplateName(),
                                             TY->getTemplateName());
  if (!CTN.getAsVoidPointer())
    return QualType();
  SmallVector<TemplateArgument, 8> Args;
  if (getCommonTemplateArguments(Ctx, Args, TX->template_arguments(),
                                 TY->template_arguments()))
    return QualType();
  return Ctx.getTemplateSpecializationType(CTN, Args,
                                           Ctx.getQualifiedType(Underlying));
}
case Type::Typedef: {
  const auto *TX = cast<TypedefType>(X), *TY = cast<TypedefType>(Y);
  const TypedefNameDecl *CD = ::getCommonDecl(TX->getDecl(), TY->getDecl());
  if (!CD)
    return QualType();
  return Ctx.getTypedefType(CD, Ctx.getQualifiedType(Underlying));
}
case Type::TypeOf: {
  // The common sugar between two typeof expressions, where one is
  // potentially a typeof_unqual and the other is not, we unify to the
  // qualified type as that retains the most information along with the type.
  // We only return a typeof_unqual type when both types are unqual types.
  TypeOfKind Kind = TypeOfKind::Qualified;
  if (cast<TypeOfType>(X)->getKind() == cast<TypeOfType>(Y)->getKind() &&
      cast<TypeOfType>(X)->getKind() == TypeOfKind::Unqualified)
    Kind = TypeOfKind::Unqualified;
  return Ctx.getTypeOfType(Ctx.getQualifiedType(Underlying), Kind);
}
case Type::TypeOfExpr:
  return QualType();

case Type::UnaryTransform: {
  const auto *UX = cast<UnaryTransformType>(X),
             *UY = cast<UnaryTransformType>(Y);
  UnaryTransformType::UTTKind KX = UX->getUTTKind();
  if (KX != UY->getUTTKind())
    return QualType();
  QualType BX = UX->getBaseType(), BY = UY->getBaseType();
  if (!Ctx.hasSameType(BX, BY))
    return QualType();
  // FIXME: It's inefficient to have to unify the base types.
  return Ctx.getUnaryTransformType(Ctx.getCommonSugaredType(BX, BY),
                                   Ctx.getQualifiedType(Underlying), KX);
}
case Type::Using: {
  const auto *UX = cast<UsingType>(X), *UY = cast<UsingType>(Y);
  const UsingShadowDecl *CD =
      ::getCommonDecl(UX->getFoundDecl(), UY->getFoundDecl());
  if (!CD)
    return QualType();
  return Ctx.getUsingType(CD, Ctx.getQualifiedType(Underlying));
}
}
llvm_unreachable("Unhandled Type Class")::llvm::llvm_unreachable_internal("Unhandled Type Class", "clang/lib/AST/ASTContext.cpp"
, 13189);
13190}

13192static auto unwrapSugar(SplitQualType &T, Qualifiers &QTotal) {
SmallVector<SplitQualType, 8> R;
while (true) {
  QTotal.addConsistentQualifiers(T.Quals);
  QualType NT = T.Ty->getLocallyUnqualifiedSingleStepDesugaredType();
  if (NT == QualType(T.Ty, 0))
    break;
  R.push_back(T);
  T = NT.split();
}
return R;
13203}

13205QualType ASTContext::getCommonSugaredType(QualType X, QualType Y,
                                        bool Unqualified) {
assert(Unqualified ? hasSameUnqualifiedType(X, Y) : hasSameType(X, Y))(static_cast <bool> (Unqualified ? hasSameUnqualifiedType
(X, Y) : hasSameType(X, Y)) ? void (0) : __assert_fail ("Unqualified ? hasSameUnqualifiedType(X, Y) : hasSameType(X, Y)"
, "clang/lib/AST/ASTContext.cpp", 13207, __extension__ __PRETTY_FUNCTION__
));
if (X == Y)
  return X;
if (!Unqualified) {
  if (X.isCanonical())
    return X;
  if (Y.isCanonical())
    return Y;
}

SplitQualType SX = X.split(), SY = Y.split();
Qualifiers QX, QY;
// Desugar SX and SY, setting the sugar and qualifiers aside into Xs and Ys,
// until we reach their underlying "canonical nodes". Note these are not
// necessarily canonical types, as they may still have sugared properties.
// QX and QY will store the sum of all qualifiers in Xs and Ys respectively.
auto Xs = ::unwrapSugar(SX, QX), Ys = ::unwrapSugar(SY, QY);
if (SX.Ty != SY.Ty) {
  // The canonical nodes differ. Build a common canonical node out of the two,
  // unifying their sugar. This may recurse back here.
  SX.Ty =
      ::getCommonNonSugarTypeNode(*this, SX.Ty, QX, SY.Ty, QY).getTypePtr();
} else {
  // The canonical nodes were identical: We may have desugared too much.
  // Add any common sugar back in.
  while (!Xs.empty() && !Ys.empty() && Xs.back().Ty == Ys.back().Ty) {
    QX -= SX.Quals;
    QY -= SY.Quals;
    SX = Xs.pop_back_val();
    SY = Ys.pop_back_val();
  }
}
if (Unqualified)
  QX = Qualifiers::removeCommonQualifiers(QX, QY);
else
  assert(QX == QY)(static_cast <bool> (QX == QY) ? void (0) : __assert_fail
 ("QX == QY", "clang/lib/AST/ASTContext.cpp", 13242, __extension__
 __PRETTY_FUNCTION__));

// Even though the remaining sugar nodes in Xs and Ys differ, some may be
// related. Walk up these nodes, unifying them and adding the result.
while (!Xs.empty() && !Ys.empty()) {
  auto Underlying = SplitQualType(
      SX.Ty, Qualifiers::removeCommonQualifiers(SX.Quals, SY.Quals));
  SX = Xs.pop_back_val();
  SY = Ys.pop_back_val();
  SX.Ty = ::getCommonSugarTypeNode(*this, SX.Ty, SY.Ty, Underlying)
              .getTypePtrOrNull();
  // Stop at the first pair which is unrelated.
  if (!SX.Ty) {
    SX.Ty = Underlying.Ty;
    break;
  }
  QX -= Underlying.Quals;
};

// Add back the missing accumulated qualifiers, which were stripped off
// with the sugar nodes we could not unify.
QualType R = getQualifiedType(SX.Ty, QX);
assert(Unqualified ? hasSameUnqualifiedType(R, X) : hasSameType(R, X))(static_cast <bool> (Unqualified ? hasSameUnqualifiedType
(R, X) : hasSameType(R, X)) ? void (0) : __assert_fail ("Unqualified ? hasSameUnqualifiedType(R, X) : hasSameType(R, X)"
, "clang/lib/AST/ASTContext.cpp", 13264, __extension__ __PRETTY_FUNCTION__
));
return R;
13266}

13268QualType ASTContext::getCorrespondingSaturatedType(QualType Ty) const {
assert(Ty->isFixedPointType())(static_cast <bool> (Ty->isFixedPointType()) ? void (
0) : __assert_fail ("Ty->isFixedPointType()", "clang/lib/AST/ASTContext.cpp"
, 13269, __extension__ __PRETTY_FUNCTION__));

if (Ty->isSaturatedFixedPointType()) return Ty;

switch (Ty->castAs<BuiltinType>()->getKind()) {
  default:
    llvm_unreachable("Not a fixed point type!")::llvm::llvm_unreachable_internal("Not a fixed point type!", "clang/lib/AST/ASTContext.cpp"
, 13275);
  case BuiltinType::ShortAccum:
    return SatShortAccumTy;
  case BuiltinType::Accum:
    return SatAccumTy;
  case BuiltinType::LongAccum:
    return SatLongAccumTy;
  case BuiltinType::UShortAccum:
    return SatUnsignedShortAccumTy;
  case BuiltinType::UAccum:
    return SatUnsignedAccumTy;
  case BuiltinType::ULongAccum:
    return SatUnsignedLongAccumTy;
  case BuiltinType::ShortFract:
    return SatShortFractTy;
  case BuiltinType::Fract:
    return SatFractTy;
  case BuiltinType::LongFract:
    return SatLongFractTy;
  case BuiltinType::UShortFract:
    return SatUnsignedShortFractTy;
  case BuiltinType::UFract:
    return SatUnsignedFractTy;
  case BuiltinType::ULongFract:
    return SatUnsignedLongFractTy;
}
13301}

13303LangAS ASTContext::getLangASForBuiltinAddressSpace(unsigned AS) const {
if (LangOpts.OpenCL)
  return getTargetInfo().getOpenCLBuiltinAddressSpace(AS);

if (LangOpts.CUDA)
  return getTargetInfo().getCUDABuiltinAddressSpace(AS);

return getLangASFromTargetAS(AS);
13311}

13313// Explicitly instantiate this in case a Redeclarable<T> is used from a TU that
13314// doesn't include ASTContext.h
13315template
13316clang::LazyGenerationalUpdatePtr<
  const Decl *, Decl *, &ExternalASTSource::CompleteRedeclChain>::ValueType
13318clang::LazyGenerationalUpdatePtr<
  const Decl *, Decl *, &ExternalASTSource::CompleteRedeclChain>::makeValue(
      const clang::ASTContext &Ctx, Decl *Value);

13322unsigned char ASTContext::getFixedPointScale(QualType Ty) const {
assert(Ty->isFixedPointType())(static_cast <bool> (Ty->isFixedPointType()) ? void (
0) : __assert_fail ("Ty->isFixedPointType()", "clang/lib/AST/ASTContext.cpp"
, 13323, __extension__ __PRETTY_FUNCTION__));

const TargetInfo &Target = getTargetInfo();
switch (Ty->castAs<BuiltinType>()->getKind()) {
  default:
    llvm_unreachable("Not a fixed point type!")::llvm::llvm_unreachable_internal("Not a fixed point type!", "clang/lib/AST/ASTContext.cpp"
, 13328);
  case BuiltinType::ShortAccum:
  case BuiltinType::SatShortAccum:
    return Target.getShortAccumScale();
  case BuiltinType::Accum:
  case BuiltinType::SatAccum:
    return Target.getAccumScale();
  case BuiltinType::LongAccum:
  case BuiltinType::SatLongAccum:
    return Target.getLongAccumScale();
  case BuiltinType::UShortAccum:
  case BuiltinType::SatUShortAccum:
    return Target.getUnsignedShortAccumScale();
  case BuiltinType::UAccum:
  case BuiltinType::SatUAccum:
    return Target.getUnsignedAccumScale();
  case BuiltinType::ULongAccum:
  case BuiltinType::SatULongAccum:
    return Target.getUnsignedLongAccumScale();
  case BuiltinType::ShortFract:
  case BuiltinType::SatShortFract:
    return Target.getShortFractScale();
  case BuiltinType::Fract:
  case BuiltinType::SatFract:
    return Target.getFractScale();
  case BuiltinType::LongFract:
  case BuiltinType::SatLongFract:
    return Target.getLongFractScale();
  case BuiltinType::UShortFract:
  case BuiltinType::SatUShortFract:
    return Target.getUnsignedShortFractScale();
  case BuiltinType::UFract:
  case BuiltinType::SatUFract:
    return Target.getUnsignedFractScale();
  case BuiltinType::ULongFract:
  case BuiltinType::SatULongFract:
    return Target.getUnsignedLongFractScale();
}
13366}

13368unsigned char ASTContext::getFixedPointIBits(QualType Ty) const {
assert(Ty->isFixedPointType())(static_cast <bool> (Ty->isFixedPointType()) ? void (
0) : __assert_fail ("Ty->isFixedPointType()", "clang/lib/AST/ASTContext.cpp"
, 13369, __extension__ __PRETTY_FUNCTION__));

const TargetInfo &Target = getTargetInfo();
switch (Ty->castAs<BuiltinType>()->getKind()) {
  default:
    llvm_unreachable("Not a fixed point type!")::llvm::llvm_unreachable_internal("Not a fixed point type!", "clang/lib/AST/ASTContext.cpp"
, 13374);
  case BuiltinType::ShortAccum:
  case BuiltinType::SatShortAccum:
    return Target.getShortAccumIBits();
  case BuiltinType::Accum:
  case BuiltinType::SatAccum:
    return Target.getAccumIBits();
  case BuiltinType::LongAccum:
  case BuiltinType::SatLongAccum:
    return Target.getLongAccumIBits();
  case BuiltinType::UShortAccum:
  case BuiltinType::SatUShortAccum:
    return Target.getUnsignedShortAccumIBits();
  case BuiltinType::UAccum:
  case BuiltinType::SatUAccum:
    return Target.getUnsignedAccumIBits();
  case BuiltinType::ULongAccum:
  case BuiltinType::SatULongAccum:
    return Target.getUnsignedLongAccumIBits();
  case BuiltinType::ShortFract:
  case BuiltinType::SatShortFract:
  case BuiltinType::Fract:
  case BuiltinType::SatFract:
  case BuiltinType::LongFract:
  case BuiltinType::SatLongFract:
  case BuiltinType::UShortFract:
  case BuiltinType::SatUShortFract:
  case BuiltinType::UFract:
  case BuiltinType::SatUFract:
  case BuiltinType::ULongFract:
  case BuiltinType::SatULongFract:
    return 0;
}
13407}

13409llvm::FixedPointSemantics
13410ASTContext::getFixedPointSemantics(QualType Ty) const {
assert((Ty->isFixedPointType() || Ty->isIntegerType()) &&(static_cast <bool> ((Ty->isFixedPointType() || Ty->
isIntegerType()) && "Can only get the fixed point semantics for a "
 "fixed point or integer type.") ? void (0) : __assert_fail (
"(Ty->isFixedPointType() || Ty->isIntegerType()) && \"Can only get the fixed point semantics for a \" \"fixed point or integer type.\""
, "clang/lib/AST/ASTContext.cpp", 13413, __extension__ __PRETTY_FUNCTION__
))
       "Can only get the fixed point semantics for a "(static_cast <bool> ((Ty->isFixedPointType() || Ty->
isIntegerType()) && "Can only get the fixed point semantics for a "
 "fixed point or integer type.") ? void (0) : __assert_fail (
"(Ty->isFixedPointType() || Ty->isIntegerType()) && \"Can only get the fixed point semantics for a \" \"fixed point or integer type.\""
, "clang/lib/AST/ASTContext.cpp", 13413, __extension__ __PRETTY_FUNCTION__
))
       "fixed point or integer type.")(static_cast <bool> ((Ty->isFixedPointType() || Ty->
isIntegerType()) && "Can only get the fixed point semantics for a "
 "fixed point or integer type.") ? void (0) : __assert_fail (
"(Ty->isFixedPointType() || Ty->isIntegerType()) && \"Can only get the fixed point semantics for a \" \"fixed point or integer type.\""
, "clang/lib/AST/ASTContext.cpp", 13413, __extension__ __PRETTY_FUNCTION__
));
if (Ty->isIntegerType())
  return llvm::FixedPointSemantics::GetIntegerSemantics(
      getIntWidth(Ty), Ty->isSignedIntegerType());

bool isSigned = Ty->isSignedFixedPointType();
return llvm::FixedPointSemantics(
    static_cast<unsigned>(getTypeSize(Ty)), getFixedPointScale(Ty), isSigned,
    Ty->isSaturatedFixedPointType(),
    !isSigned && getTargetInfo().doUnsignedFixedPointTypesHavePadding());
13423}

13425llvm::APFixedPoint ASTContext::getFixedPointMax(QualType Ty) const {
assert(Ty->isFixedPointType())(static_cast <bool> (Ty->isFixedPointType()) ? void (
0) : __assert_fail ("Ty->isFixedPointType()", "clang/lib/AST/ASTContext.cpp"
, 13426, __extension__ __PRETTY_FUNCTION__));
return llvm::APFixedPoint::getMax(getFixedPointSemantics(Ty));
13428}

13430llvm::APFixedPoint ASTContext::getFixedPointMin(QualType Ty) const {
assert(Ty->isFixedPointType())(static_cast <bool> (Ty->isFixedPointType()) ? void (
0) : __assert_fail ("Ty->isFixedPointType()", "clang/lib/AST/ASTContext.cpp"
, 13431, __extension__ __PRETTY_FUNCTION__));
return llvm::APFixedPoint::getMin(getFixedPointSemantics(Ty));
13433}

13435QualType ASTContext::getCorrespondingSignedFixedPointType(QualType Ty) const {
assert(Ty->isUnsignedFixedPointType() &&(static_cast <bool> (Ty->isUnsignedFixedPointType() &&
 "Expected unsigned fixed point type") ? void (0) : __assert_fail
 ("Ty->isUnsignedFixedPointType() && \"Expected unsigned fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 13437, __extension__ __PRETTY_FUNCTION__
))
       "Expected unsigned fixed point type")(static_cast <bool> (Ty->isUnsignedFixedPointType() &&
 "Expected unsigned fixed point type") ? void (0) : __assert_fail
 ("Ty->isUnsignedFixedPointType() && \"Expected unsigned fixed point type\""
, "clang/lib/AST/ASTContext.cpp", 13437, __extension__ __PRETTY_FUNCTION__
));

switch (Ty->castAs<BuiltinType>()->getKind()) {
case BuiltinType::UShortAccum:
  return ShortAccumTy;
case BuiltinType::UAccum:
  return AccumTy;
case BuiltinType::ULongAccum:
  return LongAccumTy;
case BuiltinType::SatUShortAccum:
  return SatShortAccumTy;
case BuiltinType::SatUAccum:
  return SatAccumTy;
case BuiltinType::SatULongAccum:
  return SatLongAccumTy;
case BuiltinType::UShortFract:
  return ShortFractTy;
case BuiltinType::UFract:
  return FractTy;
case BuiltinType::ULongFract:
  return LongFractTy;
case BuiltinType::SatUShortFract:
  return SatShortFractTy;
case BuiltinType::SatUFract:
  return SatFractTy;
case BuiltinType::SatULongFract:
  return SatLongFractTy;
default:
  llvm_unreachable("Unexpected unsigned fixed point type")::llvm::llvm_unreachable_internal("Unexpected unsigned fixed point type"
, "clang/lib/AST/ASTContext.cpp", 13465);
}
13467}

13469std::vector<std::string> ASTContext::filterFunctionTargetVersionAttrs(
  const TargetVersionAttr *TV) const {
assert(TV != nullptr)(static_cast <bool> (TV != nullptr) ? void (0) : __assert_fail
 ("TV != nullptr", "clang/lib/AST/ASTContext.cpp", 13471, __extension__
 __PRETTY_FUNCTION__));
llvm::SmallVector<StringRef, 8> Feats;
std::vector<std::string> ResFeats;
TV->getFeatures(Feats);
for (auto &Feature : Feats)
  if (Target->validateCpuSupports(Feature.str()))
    // Use '?' to mark features that came from TargetVersion.
    ResFeats.push_back("?" + Feature.str());
return ResFeats;
13480}

13482ParsedTargetAttr
13483ASTContext::filterFunctionTargetAttrs(const TargetAttr *TD) const {
assert(TD != nullptr)(static_cast <bool> (TD != nullptr) ? void (0) : __assert_fail
 ("TD != nullptr", "clang/lib/AST/ASTContext.cpp", 13484, __extension__
 __PRETTY_FUNCTION__));
ParsedTargetAttr ParsedAttr = Target->parseTargetAttr(TD->getFeaturesStr());

llvm::erase_if(ParsedAttr.Features, [&](const std::string &Feat) {
  return !Target->isValidFeatureName(StringRef{Feat}.substr(1));
});
return ParsedAttr;
13491}

13493void ASTContext::getFunctionFeatureMap(llvm::StringMap<bool> &FeatureMap,
                                     const FunctionDecl *FD) const {
if (FD)
  getFunctionFeatureMap(FeatureMap, GlobalDecl().getWithDecl(FD));
else
  Target->initFeatureMap(FeatureMap, getDiagnostics(),
                         Target->getTargetOpts().CPU,
                         Target->getTargetOpts().Features);
13501}

13503// Fills in the supplied string map with the set of target features for the
13504// passed in function.
13505void ASTContext::getFunctionFeatureMap(llvm::StringMap<bool> &FeatureMap,
                                     GlobalDecl GD) const {
StringRef TargetCPU = Target->getTargetOpts().CPU;
const FunctionDecl *FD = GD.getDecl()->getAsFunction();
if (const auto *TD = FD->getAttr<TargetAttr>()) {
  ParsedTargetAttr ParsedAttr = filterFunctionTargetAttrs(TD);

  // Make a copy of the features as passed on the command line into the
  // beginning of the additional features from the function to override.
  ParsedAttr.Features.insert(
      ParsedAttr.Features.begin(),
      Target->getTargetOpts().FeaturesAsWritten.begin(),
      Target->getTargetOpts().FeaturesAsWritten.end());

  if (ParsedAttr.CPU != "" && Target->isValidCPUName(ParsedAttr.CPU))
    TargetCPU = ParsedAttr.CPU;

  // Now populate the feature map, first with the TargetCPU which is either
  // the default or a new one from the target attribute string. Then we'll use
  // the passed in features (FeaturesAsWritten) along with the new ones from
  // the attribute.
  Target->initFeatureMap(FeatureMap, getDiagnostics(), TargetCPU,
                         ParsedAttr.Features);
} else if (const auto *SD = FD->getAttr<CPUSpecificAttr>()) {
  llvm::SmallVector<StringRef, 32> FeaturesTmp;
  Target->getCPUSpecificCPUDispatchFeatures(
      SD->getCPUName(GD.getMultiVersionIndex())->getName(), FeaturesTmp);
  std::vector<std::string> Features(FeaturesTmp.begin(), FeaturesTmp.end());
  Features.insert(Features.begin(),
                  Target->getTargetOpts().FeaturesAsWritten.begin(),
                  Target->getTargetOpts().FeaturesAsWritten.end());
  Target->initFeatureMap(FeatureMap, getDiagnostics(), TargetCPU, Features);
} else if (const auto *TC = FD->getAttr<TargetClonesAttr>()) {
  std::vector<std::string> Features;
  StringRef VersionStr = TC->getFeatureStr(GD.getMultiVersionIndex());
  if (Target->getTriple().isAArch64()) {
    // TargetClones for AArch64
    if (VersionStr != "default") {
      SmallVector<StringRef, 1> VersionFeatures;
      VersionStr.split(VersionFeatures, "+");
      for (auto &VFeature : VersionFeatures) {
        VFeature = VFeature.trim();
        // Use '?' to mark features that came from AArch64 TargetClones.
        Features.push_back((StringRef{"?"} + VFeature).str());
      }
    }
    Features.insert(Features.begin(),
                    Target->getTargetOpts().FeaturesAsWritten.begin(),
                    Target->getTargetOpts().FeaturesAsWritten.end());
  } else {
    if (VersionStr.startswith("arch="))
      TargetCPU = VersionStr.drop_front(sizeof("arch=") - 1);
    else if (VersionStr != "default")
      Features.push_back((StringRef{"+"} + VersionStr).str());
  }
  Target->initFeatureMap(FeatureMap, getDiagnostics(), TargetCPU, Features);
} else if (const auto *TV = FD->getAttr<TargetVersionAttr>()) {
  std::vector<std::string> Feats = filterFunctionTargetVersionAttrs(TV);
  Feats.insert(Feats.begin(),
               Target->getTargetOpts().FeaturesAsWritten.begin(),
               Target->getTargetOpts().FeaturesAsWritten.end());
  Target->initFeatureMap(FeatureMap, getDiagnostics(), TargetCPU, Feats);
} else {
  FeatureMap = Target->getTargetOpts().FeatureMap;
}
13570}

13572OMPTraitInfo &ASTContext::getNewOMPTraitInfo() {
OMPTraitInfoVector.emplace_back(new OMPTraitInfo());
return *OMPTraitInfoVector.back();
13575}

13577const StreamingDiagnostic &clang::
13578operator<<(const StreamingDiagnostic &DB,
         const ASTContext::SectionInfo &Section) {
if (Section.Decl)
  return DB << Section.Decl;
return DB << "a prior #pragma section";
13583}

13585bool ASTContext::mayExternalize(const Decl *D) const {
bool IsStaticVar =
    isa<VarDecl>(D) && cast<VarDecl>(D)->getStorageClass() == SC_Static;
bool IsExplicitDeviceVar = (D->hasAttr<CUDADeviceAttr>() &&
                            !D->getAttr<CUDADeviceAttr>()->isImplicit()) ||
                           (D->hasAttr<CUDAConstantAttr>() &&
                            !D->getAttr<CUDAConstantAttr>()->isImplicit());
// CUDA/HIP: static managed variables need to be externalized since it is
// a declaration in IR, therefore cannot have internal linkage. Kernels in
// anonymous name space needs to be externalized to avoid duplicate symbols.
return (IsStaticVar &&
        (D->hasAttr<HIPManagedAttr>() || IsExplicitDeviceVar)) ||
       (D->hasAttr<CUDAGlobalAttr>() &&
        basicGVALinkageForFunction(*this, cast<FunctionDecl>(D)) ==
            GVA_Internal);
13600}

13602bool ASTContext::shouldExternalize(const Decl *D) const {
return mayExternalize(D) &&
       (D->hasAttr<HIPManagedAttr>() || D->hasAttr<CUDAGlobalAttr>() ||
        CUDADeviceVarODRUsedByHost.count(cast<VarDecl>(D)));
13606}

13608StringRef ASTContext::getCUIDHash() const {
if (!CUIDHash.empty())
  return CUIDHash;
if (LangOpts.CUID.empty())
  return StringRef();
CUIDHash = llvm::utohexstr(llvm::MD5Hash(LangOpts.CUID), /*LowerCase=*/true);
return CUIDHash;
13615}