/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp

Bug Summary

File:	tools/clang/lib/AST/Expr.cpp
Warning:	line 3861, column 3 Null pointer passed as an argument to a 'nonnull' parameter
Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Expr.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -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 -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-9/lib/clang/9.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/include -I /build/llvm-toolchain-snapshot-9~svn362543/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/9.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-9/lib/clang/9.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-9~svn362543=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2019-06-05-060531-1271-1 -x c++ /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp -faddrsig
1//===--- Expr.cpp - Expression AST Node Implementation --------------------===//
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 Expr class and subclasses.
10//
11//===----------------------------------------------------------------------===//

13#include "clang/AST/Expr.h"
14#include "clang/AST/APValue.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/Attr.h"
17#include "clang/AST/DeclCXX.h"
18#include "clang/AST/DeclObjC.h"
19#include "clang/AST/DeclTemplate.h"
20#include "clang/AST/EvaluatedExprVisitor.h"
21#include "clang/AST/ExprCXX.h"
22#include "clang/AST/Mangle.h"
23#include "clang/AST/RecordLayout.h"
24#include "clang/AST/StmtVisitor.h"
25#include "clang/Basic/Builtins.h"
26#include "clang/Basic/CharInfo.h"
27#include "clang/Basic/SourceManager.h"
28#include "clang/Basic/TargetInfo.h"
29#include "clang/Lex/Lexer.h"
30#include "clang/Lex/LiteralSupport.h"
31#include "llvm/Support/ErrorHandling.h"
32#include "llvm/Support/raw_ostream.h"
33#include <algorithm>
34#include <cstring>
35using namespace clang;

37const Expr *Expr::getBestDynamicClassTypeExpr() const {
const Expr *E = this;
while (true) {
  E = E->ignoreParenBaseCasts();

  // Follow the RHS of a comma operator.
  if (auto *BO = dyn_cast<BinaryOperator>(E)) {
    if (BO->getOpcode() == BO_Comma) {
      E = BO->getRHS();
      continue;
    }
  }

  // Step into initializer for materialized temporaries.
  if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) {
    E = MTE->GetTemporaryExpr();
    continue;
  }

  break;
}

return E;
60}

62const CXXRecordDecl *Expr::getBestDynamicClassType() const {
const Expr *E = getBestDynamicClassTypeExpr();
QualType DerivedType = E->getType();
if (const PointerType *PTy = DerivedType->getAs<PointerType>())
  DerivedType = PTy->getPointeeType();

if (DerivedType->isDependentType())
  return nullptr;

const RecordType *Ty = DerivedType->castAs<RecordType>();
Decl *D = Ty->getDecl();
return cast<CXXRecordDecl>(D);
74}

76const Expr *Expr::skipRValueSubobjectAdjustments(
  SmallVectorImpl<const Expr *> &CommaLHSs,
  SmallVectorImpl<SubobjectAdjustment> &Adjustments) const {
const Expr *E = this;
while (true) {
  E = E->IgnoreParens();

  if (const CastExpr *CE = dyn_cast<CastExpr>(E)) {
    if ((CE->getCastKind() == CK_DerivedToBase ||
         CE->getCastKind() == CK_UncheckedDerivedToBase) &&
        E->getType()->isRecordType()) {
      E = CE->getSubExpr();
      CXXRecordDecl *Derived
        = cast<CXXRecordDecl>(E->getType()->getAs<RecordType>()->getDecl());
      Adjustments.push_back(SubobjectAdjustment(CE, Derived));
      continue;
    }

    if (CE->getCastKind() == CK_NoOp) {
      E = CE->getSubExpr();
      continue;
    }
  } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) {
    if (!ME->isArrow()) {
      assert(ME->getBase()->getType()->isRecordType())((ME->getBase()->getType()->isRecordType()) ? static_cast
<void> (0) : __assert_fail ("ME->getBase()->getType()->isRecordType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 100, __PRETTY_FUNCTION__));
      if (FieldDecl *Field = dyn_cast<FieldDecl>(ME->getMemberDecl())) {
        if (!Field->isBitField() && !Field->getType()->isReferenceType()) {
          E = ME->getBase();
          Adjustments.push_back(SubobjectAdjustment(Field));
          continue;
        }
      }
    }
  } else if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
    if (BO->getOpcode() == BO_PtrMemD) {
      assert(BO->getRHS()->isRValue())((BO->getRHS()->isRValue()) ? static_cast<void> (
0) : __assert_fail ("BO->getRHS()->isRValue()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 111, __PRETTY_FUNCTION__));
      E = BO->getLHS();
      const MemberPointerType *MPT =
        BO->getRHS()->getType()->getAs<MemberPointerType>();
      Adjustments.push_back(SubobjectAdjustment(MPT, BO->getRHS()));
      continue;
    } else if (BO->getOpcode() == BO_Comma) {
      CommaLHSs.push_back(BO->getLHS());
      E = BO->getRHS();
      continue;
    }
  }

  // Nothing changed.
  break;
}
return E;
128}

130/// isKnownToHaveBooleanValue - Return true if this is an integer expression
131/// that is known to return 0 or 1.  This happens for _Bool/bool expressions
132/// but also int expressions which are produced by things like comparisons in
133/// C.
134bool Expr::isKnownToHaveBooleanValue() const {
const Expr *E = IgnoreParens();

// If this value has _Bool type, it is obvious 0/1.
if (E->getType()->isBooleanType()) return true;
// If this is a non-scalar-integer type, we don't care enough to try.
if (!E->getType()->isIntegralOrEnumerationType()) return false;

if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) {
  switch (UO->getOpcode()) {
  case UO_Plus:
    return UO->getSubExpr()->isKnownToHaveBooleanValue();
  case UO_LNot:
    return true;
  default:
    return false;
  }
}

// Only look through implicit casts.  If the user writes
// '(int) (a && b)' treat it as an arbitrary int.
if (const ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E))
  return CE->getSubExpr()->isKnownToHaveBooleanValue();

if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
  switch (BO->getOpcode()) {
  default: return false;
  case BO_LT:   // Relational operators.
  case BO_GT:
  case BO_LE:
  case BO_GE:
  case BO_EQ:   // Equality operators.
  case BO_NE:
  case BO_LAnd: // AND operator.
  case BO_LOr:  // Logical OR operator.
    return true;

  case BO_And:  // Bitwise AND operator.
  case BO_Xor:  // Bitwise XOR operator.
  case BO_Or:   // Bitwise OR operator.
    // Handle things like (x==2)|(y==12).
    return BO->getLHS()->isKnownToHaveBooleanValue() &&
           BO->getRHS()->isKnownToHaveBooleanValue();

  case BO_Comma:
  case BO_Assign:
    return BO->getRHS()->isKnownToHaveBooleanValue();
  }
}

if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E))
  return CO->getTrueExpr()->isKnownToHaveBooleanValue() &&
         CO->getFalseExpr()->isKnownToHaveBooleanValue();

return false;
189}

191// Amusing macro metaprogramming hack: check whether a class provides
192// a more specific implementation of getExprLoc().
193//
194// See also Stmt.cpp:{getBeginLoc(),getEndLoc()}.
195namespace {
/// This implementation is used when a class provides a custom
/// implementation of getExprLoc.
template <class E, class T>
SourceLocation getExprLocImpl(const Expr *expr,
                              SourceLocation (T::*v)() const) {
  return static_cast<const E*>(expr)->getExprLoc();
}

/// This implementation is used when a class doesn't provide
/// a custom implementation of getExprLoc.  Overload resolution
/// should pick it over the implementation above because it's
/// more specialized according to function template partial ordering.
template <class E>
SourceLocation getExprLocImpl(const Expr *expr,
                              SourceLocation (Expr::*v)() const) {
  return static_cast<const E *>(expr)->getBeginLoc();
}
213}

215SourceLocation Expr::getExprLoc() const {
switch (getStmtClass()) {
case Stmt::NoStmtClass: llvm_unreachable("statement without class")::llvm::llvm_unreachable_internal("statement without class", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 217);
218#define ABSTRACT_STMT(type)
219#define STMT(type, base) \
case Stmt::type##Class: break;
221#define EXPR(type, base) \
case Stmt::type##Class: return getExprLocImpl<type>(this, &type::getExprLoc);
223#include "clang/AST/StmtNodes.inc"
}
llvm_unreachable("unknown expression kind")::llvm::llvm_unreachable_internal("unknown expression kind", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 225);
226}

228//===----------------------------------------------------------------------===//
229// Primary Expressions.
230//===----------------------------------------------------------------------===//

232/// Compute the type-, value-, and instantiation-dependence of a
233/// declaration reference
234/// based on the declaration being referenced.
235static void computeDeclRefDependence(const ASTContext &Ctx, NamedDecl *D,
                                   QualType T, bool &TypeDependent,
                                   bool &ValueDependent,
                                   bool &InstantiationDependent) {
TypeDependent = false;
ValueDependent = false;
InstantiationDependent = false;

// (TD) C++ [temp.dep.expr]p3:
//   An id-expression is type-dependent if it contains:
//
// and
//
// (VD) C++ [temp.dep.constexpr]p2:
//  An identifier is value-dependent if it is:

//  (TD)  - an identifier that was declared with dependent type
//  (VD)  - a name declared with a dependent type,
if (T->isDependentType()) {
  TypeDependent = true;
  ValueDependent = true;
  InstantiationDependent = true;
  return;
} else if (T->isInstantiationDependentType()) {
  InstantiationDependent = true;
}

//  (TD)  - a conversion-function-id that specifies a dependent type
if (D->getDeclName().getNameKind()
                              == DeclarationName::CXXConversionFunctionName) {
  QualType T = D->getDeclName().getCXXNameType();
  if (T->isDependentType()) {
    TypeDependent = true;
    ValueDependent = true;
    InstantiationDependent = true;
    return;
  }

  if (T->isInstantiationDependentType())
    InstantiationDependent = true;
}

//  (VD)  - the name of a non-type template parameter,
if (isa<NonTypeTemplateParmDecl>(D)) {
  ValueDependent = true;
  InstantiationDependent = true;
  return;
}

//  (VD) - a constant with integral or enumeration type and is
//         initialized with an expression that is value-dependent.
//  (VD) - a constant with literal type and is initialized with an
//         expression that is value-dependent [C++11].
//  (VD) - FIXME: Missing from the standard:
//       -  an entity with reference type and is initialized with an
//          expression that is value-dependent [C++11]
if (VarDecl *Var = dyn_cast<VarDecl>(D)) {
  if ((Ctx.getLangOpts().CPlusPlus11 ?
         Var->getType()->isLiteralType(Ctx) :
         Var->getType()->isIntegralOrEnumerationType()) &&
      (Var->getType().isConstQualified() ||
       Var->getType()->isReferenceType())) {
    if (const Expr *Init = Var->getAnyInitializer())
      if (Init->isValueDependent()) {
        ValueDependent = true;
        InstantiationDependent = true;
      }
  }

  // (VD) - FIXME: Missing from the standard:
  //      -  a member function or a static data member of the current
  //         instantiation
  if (Var->isStaticDataMember() &&
      Var->getDeclContext()->isDependentContext()) {
    ValueDependent = true;
    InstantiationDependent = true;
    TypeSourceInfo *TInfo = Var->getFirstDecl()->getTypeSourceInfo();
    if (TInfo->getType()->isIncompleteArrayType())
      TypeDependent = true;
  }

  return;
}

// (VD) - FIXME: Missing from the standard:
//      -  a member function or a static data member of the current
//         instantiation
if (isa<CXXMethodDecl>(D) && D->getDeclContext()->isDependentContext()) {
  ValueDependent = true;
  InstantiationDependent = true;
}
326}

328void DeclRefExpr::computeDependence(const ASTContext &Ctx) {
bool TypeDependent = false;
bool ValueDependent = false;
bool InstantiationDependent = false;
computeDeclRefDependence(Ctx, getDecl(), getType(), TypeDependent,
                         ValueDependent, InstantiationDependent);

ExprBits.TypeDependent |= TypeDependent;
ExprBits.ValueDependent |= ValueDependent;
ExprBits.InstantiationDependent |= InstantiationDependent;

// Is the declaration a parameter pack?
if (getDecl()->isParameterPack())
  ExprBits.ContainsUnexpandedParameterPack = true;
342}

344DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, ValueDecl *D,
                       bool RefersToEnclosingVariableOrCapture, QualType T,
                       ExprValueKind VK, SourceLocation L,
                       const DeclarationNameLoc &LocInfo)
  : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false),
    D(D), DNLoc(LocInfo) {
DeclRefExprBits.HasQualifier = false;
DeclRefExprBits.HasTemplateKWAndArgsInfo = false;
DeclRefExprBits.HasFoundDecl = false;
DeclRefExprBits.HadMultipleCandidates = false;
DeclRefExprBits.RefersToEnclosingVariableOrCapture =
    RefersToEnclosingVariableOrCapture;
DeclRefExprBits.Loc = L;
computeDependence(Ctx);
358}

360DeclRefExpr::DeclRefExpr(const ASTContext &Ctx,
                       NestedNameSpecifierLoc QualifierLoc,
                       SourceLocation TemplateKWLoc, ValueDecl *D,
                       bool RefersToEnclosingVariableOrCapture,
                       const DeclarationNameInfo &NameInfo, NamedDecl *FoundD,
                       const TemplateArgumentListInfo *TemplateArgs,
                       QualType T, ExprValueKind VK)
  : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false),
    D(D), DNLoc(NameInfo.getInfo()) {
DeclRefExprBits.Loc = NameInfo.getLoc();
DeclRefExprBits.HasQualifier = QualifierLoc ? 1 : 0;
if (QualifierLoc) {
  new (getTrailingObjects<NestedNameSpecifierLoc>())
      NestedNameSpecifierLoc(QualifierLoc);
  auto *NNS = QualifierLoc.getNestedNameSpecifier();
  if (NNS->isInstantiationDependent())
    ExprBits.InstantiationDependent = true;
  if (NNS->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;
}
DeclRefExprBits.HasFoundDecl = FoundD ? 1 : 0;
if (FoundD)
  *getTrailingObjects<NamedDecl *>() = FoundD;
DeclRefExprBits.HasTemplateKWAndArgsInfo
  = (TemplateArgs || TemplateKWLoc.isValid()) ? 1 : 0;
DeclRefExprBits.RefersToEnclosingVariableOrCapture =
    RefersToEnclosingVariableOrCapture;
if (TemplateArgs) {
  bool Dependent = false;
  bool InstantiationDependent = false;
  bool ContainsUnexpandedParameterPack = false;
  getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
      TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(),
      Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
  assert(!Dependent && "built a DeclRefExpr with dependent template args")((!Dependent && "built a DeclRefExpr with dependent template args"
) ? static_cast<void> (0) : __assert_fail ("!Dependent && \"built a DeclRefExpr with dependent template args\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 394, __PRETTY_FUNCTION__));
  ExprBits.InstantiationDependent |= InstantiationDependent;
  ExprBits.ContainsUnexpandedParameterPack |= ContainsUnexpandedParameterPack;
} else if (TemplateKWLoc.isValid()) {
  getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
      TemplateKWLoc);
}
DeclRefExprBits.HadMultipleCandidates = 0;

computeDependence(Ctx);
404}

406DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context,
                               NestedNameSpecifierLoc QualifierLoc,
                               SourceLocation TemplateKWLoc,
                               ValueDecl *D,
                               bool RefersToEnclosingVariableOrCapture,
                               SourceLocation NameLoc,
                               QualType T,
                               ExprValueKind VK,
                               NamedDecl *FoundD,
                               const TemplateArgumentListInfo *TemplateArgs) {
return Create(Context, QualifierLoc, TemplateKWLoc, D,
              RefersToEnclosingVariableOrCapture,
              DeclarationNameInfo(D->getDeclName(), NameLoc),
              T, VK, FoundD, TemplateArgs);
420}

422DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context,
                               NestedNameSpecifierLoc QualifierLoc,
                               SourceLocation TemplateKWLoc,
                               ValueDecl *D,
                               bool RefersToEnclosingVariableOrCapture,
                               const DeclarationNameInfo &NameInfo,
                               QualType T,
                               ExprValueKind VK,
                               NamedDecl *FoundD,
                               const TemplateArgumentListInfo *TemplateArgs) {
// Filter out cases where the found Decl is the same as the value refenenced.
if (D == FoundD)
  FoundD = nullptr;

bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid();
std::size_t Size =
    totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *,
                     ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
        QualifierLoc ? 1 : 0, FoundD ? 1 : 0,
        HasTemplateKWAndArgsInfo ? 1 : 0,
        TemplateArgs ? TemplateArgs->size() : 0);

void *Mem = Context.Allocate(Size, alignof(DeclRefExpr));
return new (Mem) DeclRefExpr(Context, QualifierLoc, TemplateKWLoc, D,
                             RefersToEnclosingVariableOrCapture,
                             NameInfo, FoundD, TemplateArgs, T, VK);
448}

450DeclRefExpr *DeclRefExpr::CreateEmpty(const ASTContext &Context,
                                    bool HasQualifier,
                                    bool HasFoundDecl,
                                    bool HasTemplateKWAndArgsInfo,
                                    unsigned NumTemplateArgs) {
assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast
<void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 455, __PRETTY_FUNCTION__));
std::size_t Size =
    totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *,
                     ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>(
        HasQualifier ? 1 : 0, HasFoundDecl ? 1 : 0, HasTemplateKWAndArgsInfo,
        NumTemplateArgs);
void *Mem = Context.Allocate(Size, alignof(DeclRefExpr));
return new (Mem) DeclRefExpr(EmptyShell());
463}

465SourceLocation DeclRefExpr::getBeginLoc() const {
if (hasQualifier())
  return getQualifierLoc().getBeginLoc();
return getNameInfo().getBeginLoc();
469}
470SourceLocation DeclRefExpr::getEndLoc() const {
if (hasExplicitTemplateArgs())
  return getRAngleLoc();
return getNameInfo().getEndLoc();
474}

476PredefinedExpr::PredefinedExpr(SourceLocation L, QualType FNTy, IdentKind IK,
                             StringLiteral *SL)
  : Expr(PredefinedExprClass, FNTy, VK_LValue, OK_Ordinary,
         FNTy->isDependentType(), FNTy->isDependentType(),
         FNTy->isInstantiationDependentType(),
         /*ContainsUnexpandedParameterPack=*/false) {
PredefinedExprBits.Kind = IK;
assert((getIdentKind() == IK) &&(((getIdentKind() == IK) && "IdentKind do not fit in PredefinedExprBitfields!"
) ? static_cast<void> (0) : __assert_fail ("(getIdentKind() == IK) && \"IdentKind do not fit in PredefinedExprBitfields!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 484, __PRETTY_FUNCTION__))
       "IdentKind do not fit in PredefinedExprBitfields!")(((getIdentKind() == IK) && "IdentKind do not fit in PredefinedExprBitfields!"
) ? static_cast<void> (0) : __assert_fail ("(getIdentKind() == IK) && \"IdentKind do not fit in PredefinedExprBitfields!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 484, __PRETTY_FUNCTION__));
bool HasFunctionName = SL != nullptr;
PredefinedExprBits.HasFunctionName = HasFunctionName;
PredefinedExprBits.Loc = L;
if (HasFunctionName)
  setFunctionName(SL);
490}

492PredefinedExpr::PredefinedExpr(EmptyShell Empty, bool HasFunctionName)
  : Expr(PredefinedExprClass, Empty) {
PredefinedExprBits.HasFunctionName = HasFunctionName;
495}

497PredefinedExpr *PredefinedExpr::Create(const ASTContext &Ctx, SourceLocation L,
                                     QualType FNTy, IdentKind IK,
                                     StringLiteral *SL) {
bool HasFunctionName = SL != nullptr;
void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName),
                         alignof(PredefinedExpr));
return new (Mem) PredefinedExpr(L, FNTy, IK, SL);
504}

506PredefinedExpr *PredefinedExpr::CreateEmpty(const ASTContext &Ctx,
                                          bool HasFunctionName) {
void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName),
                         alignof(PredefinedExpr));
return new (Mem) PredefinedExpr(EmptyShell(), HasFunctionName);
511}

513StringRef PredefinedExpr::getIdentKindName(PredefinedExpr::IdentKind IK) {
switch (IK) {
case Func:
  return "__func__";
case Function:
  return "__FUNCTION__";
case FuncDName:
  return "__FUNCDNAME__";
case LFunction:
  return "L__FUNCTION__";
case PrettyFunction:
  return "__PRETTY_FUNCTION__";
case FuncSig:
  return "__FUNCSIG__";
case LFuncSig:
  return "L__FUNCSIG__";
case PrettyFunctionNoVirtual:
  break;
}
llvm_unreachable("Unknown ident kind for PredefinedExpr")::llvm::llvm_unreachable_internal("Unknown ident kind for PredefinedExpr"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 532);
533}

535// FIXME: Maybe this should use DeclPrinter with a special "print predefined
536// expr" policy instead.
537std::string PredefinedExpr::ComputeName(IdentKind IK, const Decl *CurrentDecl) {
ASTContext &Context = CurrentDecl->getASTContext();

if (IK == PredefinedExpr::FuncDName) {
  if (const NamedDecl *ND = dyn_cast<NamedDecl>(CurrentDecl)) {
    std::unique_ptr<MangleContext> MC;
    MC.reset(Context.createMangleContext());

    if (MC->shouldMangleDeclName(ND)) {
      SmallString<256> Buffer;
      llvm::raw_svector_ostream Out(Buffer);
      if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(ND))
        MC->mangleCXXCtor(CD, Ctor_Base, Out);
      else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(ND))
        MC->mangleCXXDtor(DD, Dtor_Base, Out);
      else
        MC->mangleName(ND, Out);

      if (!Buffer.empty() && Buffer.front() == '\01')
        return Buffer.substr(1);
      return Buffer.str();
    } else
      return ND->getIdentifier()->getName();
  }
  return "";
}
if (isa<BlockDecl>(CurrentDecl)) {
  // For blocks we only emit something if it is enclosed in a function
  // For top-level block we'd like to include the name of variable, but we
  // don't have it at this point.
  auto DC = CurrentDecl->getDeclContext();
  if (DC->isFileContext())
    return "";

  SmallString<256> Buffer;
  llvm::raw_svector_ostream Out(Buffer);
  if (auto *DCBlock = dyn_cast<BlockDecl>(DC))
    // For nested blocks, propagate up to the parent.
    Out << ComputeName(IK, DCBlock);
  else if (auto *DCDecl = dyn_cast<Decl>(DC))
    Out << ComputeName(IK, DCDecl) << "_block_invoke";
  return Out.str();
}
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(CurrentDecl)) {
  if (IK != PrettyFunction && IK != PrettyFunctionNoVirtual &&
      IK != FuncSig && IK != LFuncSig)
    return FD->getNameAsString();

  SmallString<256> Name;
  llvm::raw_svector_ostream Out(Name);

  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
    if (MD->isVirtual() && IK != PrettyFunctionNoVirtual)
      Out << "virtual ";
    if (MD->isStatic())
      Out << "static ";
  }

  PrintingPolicy Policy(Context.getLangOpts());
  std::string Proto;
  llvm::raw_string_ostream POut(Proto);

  const FunctionDecl *Decl = FD;
  if (const FunctionDecl* Pattern = FD->getTemplateInstantiationPattern())
    Decl = Pattern;
  const FunctionType *AFT = Decl->getType()->getAs<FunctionType>();
  const FunctionProtoType *FT = nullptr;
  if (FD->hasWrittenPrototype())
    FT = dyn_cast<FunctionProtoType>(AFT);

  if (IK == FuncSig || IK == LFuncSig) {
    switch (AFT->getCallConv()) {
    case CC_C: POut << "__cdecl "; break;
    case CC_X86StdCall: POut << "__stdcall "; break;
    case CC_X86FastCall: POut << "__fastcall "; break;
    case CC_X86ThisCall: POut << "__thiscall "; break;
    case CC_X86VectorCall: POut << "__vectorcall "; break;
    case CC_X86RegCall: POut << "__regcall "; break;
    // Only bother printing the conventions that MSVC knows about.
    default: break;
    }
  }

  FD->printQualifiedName(POut, Policy);

  POut << "(";
  if (FT) {
    for (unsigned i = 0, e = Decl->getNumParams(); i != e; ++i) {
      if (i) POut << ", ";
      POut << Decl->getParamDecl(i)->getType().stream(Policy);
    }

    if (FT->isVariadic()) {
      if (FD->getNumParams()) POut << ", ";
      POut << "...";
    } else if ((IK == FuncSig || IK == LFuncSig ||
                !Context.getLangOpts().CPlusPlus) &&
               !Decl->getNumParams()) {
      POut << "void";
    }
  }
  POut << ")";

  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
    assert(FT && "We must have a written prototype in this case.")((FT && "We must have a written prototype in this case."
) ? static_cast<void> (0) : __assert_fail ("FT && \"We must have a written prototype in this case.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 641, __PRETTY_FUNCTION__));
    if (FT->isConst())
      POut << " const";
    if (FT->isVolatile())
      POut << " volatile";
    RefQualifierKind Ref = MD->getRefQualifier();
    if (Ref == RQ_LValue)
      POut << " &";
    else if (Ref == RQ_RValue)
      POut << " &&";
  }

  typedef SmallVector<const ClassTemplateSpecializationDecl *, 8> SpecsTy;
  SpecsTy Specs;
  const DeclContext *Ctx = FD->getDeclContext();
  while (Ctx && isa<NamedDecl>(Ctx)) {
    const ClassTemplateSpecializationDecl *Spec
                             = dyn_cast<ClassTemplateSpecializationDecl>(Ctx);
    if (Spec && !Spec->isExplicitSpecialization())
      Specs.push_back(Spec);
    Ctx = Ctx->getParent();
  }

  std::string TemplateParams;
  llvm::raw_string_ostream TOut(TemplateParams);
  for (SpecsTy::reverse_iterator I = Specs.rbegin(), E = Specs.rend();
       I != E; ++I) {
    const TemplateParameterList *Params
                = (*I)->getSpecializedTemplate()->getTemplateParameters();
    const TemplateArgumentList &Args = (*I)->getTemplateArgs();
    assert(Params->size() == Args.size())((Params->size() == Args.size()) ? static_cast<void>
 (0) : __assert_fail ("Params->size() == Args.size()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 671, __PRETTY_FUNCTION__));
    for (unsigned i = 0, numParams = Params->size(); i != numParams; ++i) {
      StringRef Param = Params->getParam(i)->getName();
      if (Param.empty()) continue;
      TOut << Param << " = ";
      Args.get(i).print(Policy, TOut);
      TOut << ", ";
    }
  }

  FunctionTemplateSpecializationInfo *FSI
                                        = FD->getTemplateSpecializationInfo();
  if (FSI && !FSI->isExplicitSpecialization()) {
    const TemplateParameterList* Params
                                = FSI->getTemplate()->getTemplateParameters();
    const TemplateArgumentList* Args = FSI->TemplateArguments;
    assert(Params->size() == Args->size())((Params->size() == Args->size()) ? static_cast<void
> (0) : __assert_fail ("Params->size() == Args->size()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 687, __PRETTY_FUNCTION__));
    for (unsigned i = 0, e = Params->size(); i != e; ++i) {
      StringRef Param = Params->getParam(i)->getName();
      if (Param.empty()) continue;
      TOut << Param << " = ";
      Args->get(i).print(Policy, TOut);
      TOut << ", ";
    }
  }

  TOut.flush();
  if (!TemplateParams.empty()) {
    // remove the trailing comma and space
    TemplateParams.resize(TemplateParams.size() - 2);
    POut << " [" << TemplateParams << "]";
  }

  POut.flush();

  // Print "auto" for all deduced return types. This includes C++1y return
  // type deduction and lambdas. For trailing return types resolve the
  // decltype expression. Otherwise print the real type when this is
  // not a constructor or destructor.
  if (isa<CXXMethodDecl>(FD) &&
       cast<CXXMethodDecl>(FD)->getParent()->isLambda())
    Proto = "auto " + Proto;
  else if (FT && FT->getReturnType()->getAs<DecltypeType>())
    FT->getReturnType()
        ->getAs<DecltypeType>()
        ->getUnderlyingType()
        .getAsStringInternal(Proto, Policy);
  else if (!isa<CXXConstructorDecl>(FD) && !isa<CXXDestructorDecl>(FD))
    AFT->getReturnType().getAsStringInternal(Proto, Policy);

  Out << Proto;

  return Name.str().str();
}
if (const CapturedDecl *CD = dyn_cast<CapturedDecl>(CurrentDecl)) {
  for (const DeclContext *DC = CD->getParent(); DC; DC = DC->getParent())
    // Skip to its enclosing function or method, but not its enclosing
    // CapturedDecl.
    if (DC->isFunctionOrMethod() && (DC->getDeclKind() != Decl::Captured)) {
      const Decl *D = Decl::castFromDeclContext(DC);
      return ComputeName(IK, D);
    }
  llvm_unreachable("CapturedDecl not inside a function or method")::llvm::llvm_unreachable_internal("CapturedDecl not inside a function or method"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 733);
}
if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(CurrentDecl)) {
  SmallString<256> Name;
  llvm::raw_svector_ostream Out(Name);
  Out << (MD->isInstanceMethod() ? '-' : '+');
  Out << '[';

  // For incorrect code, there might not be an ObjCInterfaceDecl.  Do
  // a null check to avoid a crash.
  if (const ObjCInterfaceDecl *ID = MD->getClassInterface())
    Out << *ID;

  if (const ObjCCategoryImplDecl *CID =
      dyn_cast<ObjCCategoryImplDecl>(MD->getDeclContext()))
    Out << '(' << *CID << ')';

  Out <<  ' ';
  MD->getSelector().print(Out);
  Out <<  ']';

  return Name.str().str();
}
if (isa<TranslationUnitDecl>(CurrentDecl) && IK == PrettyFunction) {
  // __PRETTY_FUNCTION__ -> "top level", the others produce an empty string.
  return "top level";
}
return "";
761}

763void APNumericStorage::setIntValue(const ASTContext &C,
                                 const llvm::APInt &Val) {
if (hasAllocation())
  C.Deallocate(pVal);

BitWidth = Val.getBitWidth();
unsigned NumWords = Val.getNumWords();
const uint64_t* Words = Val.getRawData();
if (NumWords > 1) {
  pVal = new (C) uint64_t[NumWords];
  std::copy(Words, Words + NumWords, pVal);
} else if (NumWords == 1)
  VAL = Words[0];
else
  VAL = 0;
778}

780IntegerLiteral::IntegerLiteral(const ASTContext &C, const llvm::APInt &V,
                             QualType type, SourceLocation l)
: Expr(IntegerLiteralClass, type, VK_RValue, OK_Ordinary, false, false,
       false, false),
  Loc(l) {
assert(type->isIntegerType() && "Illegal type in IntegerLiteral")((type->isIntegerType() && "Illegal type in IntegerLiteral"
) ? static_cast<void> (0) : __assert_fail ("type->isIntegerType() && \"Illegal type in IntegerLiteral\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 785, __PRETTY_FUNCTION__));
assert(V.getBitWidth() == C.getIntWidth(type) &&((V.getBitWidth() == C.getIntWidth(type) && "Integer type is not the correct size for constant."
) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getIntWidth(type) && \"Integer type is not the correct size for constant.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 787, __PRETTY_FUNCTION__))
       "Integer type is not the correct size for constant.")((V.getBitWidth() == C.getIntWidth(type) && "Integer type is not the correct size for constant."
) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getIntWidth(type) && \"Integer type is not the correct size for constant.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 787, __PRETTY_FUNCTION__));
setValue(C, V);
789}

791IntegerLiteral *
792IntegerLiteral::Create(const ASTContext &C, const llvm::APInt &V,
                     QualType type, SourceLocation l) {
return new (C) IntegerLiteral(C, V, type, l);
795}

797IntegerLiteral *
798IntegerLiteral::Create(const ASTContext &C, EmptyShell Empty) {
return new (C) IntegerLiteral(Empty);
800}

802FixedPointLiteral::FixedPointLiteral(const ASTContext &C, const llvm::APInt &V,
                                   QualType type, SourceLocation l,
                                   unsigned Scale)
  : Expr(FixedPointLiteralClass, type, VK_RValue, OK_Ordinary, false, false,
         false, false),
    Loc(l), Scale(Scale) {
assert(type->isFixedPointType() && "Illegal type in FixedPointLiteral")((type->isFixedPointType() && "Illegal type in FixedPointLiteral"
) ? static_cast<void> (0) : __assert_fail ("type->isFixedPointType() && \"Illegal type in FixedPointLiteral\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 808, __PRETTY_FUNCTION__));
assert(V.getBitWidth() == C.getTypeInfo(type).Width &&((V.getBitWidth() == C.getTypeInfo(type).Width && "Fixed point type is not the correct size for constant."
) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getTypeInfo(type).Width && \"Fixed point type is not the correct size for constant.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 810, __PRETTY_FUNCTION__))
       "Fixed point type is not the correct size for constant.")((V.getBitWidth() == C.getTypeInfo(type).Width && "Fixed point type is not the correct size for constant."
) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getTypeInfo(type).Width && \"Fixed point type is not the correct size for constant.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 810, __PRETTY_FUNCTION__));
setValue(C, V);
812}

814FixedPointLiteral *FixedPointLiteral::CreateFromRawInt(const ASTContext &C,
                                                     const llvm::APInt &V,
                                                     QualType type,
                                                     SourceLocation l,
                                                     unsigned Scale) {
return new (C) FixedPointLiteral(C, V, type, l, Scale);
820}

822std::string FixedPointLiteral::getValueAsString(unsigned Radix) const {
// Currently the longest decimal number that can be printed is the max for an
// unsigned long _Accum: 4294967295.99999999976716935634613037109375
// which is 43 characters.
SmallString<64> S;
FixedPointValueToString(
    S, llvm::APSInt::getUnsigned(getValue().getZExtValue()), Scale);
return S.str();
830}

832FloatingLiteral::FloatingLiteral(const ASTContext &C, const llvm::APFloat &V,
                               bool isexact, QualType Type, SourceLocation L)
: Expr(FloatingLiteralClass, Type, VK_RValue, OK_Ordinary, false, false,
       false, false), Loc(L) {
setSemantics(V.getSemantics());
FloatingLiteralBits.IsExact = isexact;
setValue(C, V);
839}

841FloatingLiteral::FloatingLiteral(const ASTContext &C, EmptyShell Empty)
: Expr(FloatingLiteralClass, Empty) {
setRawSemantics(IEEEhalf);
FloatingLiteralBits.IsExact = false;
845}

847FloatingLiteral *
848FloatingLiteral::Create(const ASTContext &C, const llvm::APFloat &V,
                      bool isexact, QualType Type, SourceLocation L) {
return new (C) FloatingLiteral(C, V, isexact, Type, L);
851}

853FloatingLiteral *
854FloatingLiteral::Create(const ASTContext &C, EmptyShell Empty) {
return new (C) FloatingLiteral(C, Empty);
856}

858const llvm::fltSemantics &FloatingLiteral::getSemantics() const {
switch(FloatingLiteralBits.Semantics) {
case IEEEhalf:
  return llvm::APFloat::IEEEhalf();
case IEEEsingle:
  return llvm::APFloat::IEEEsingle();
case IEEEdouble:
  return llvm::APFloat::IEEEdouble();
case x87DoubleExtended:
  return llvm::APFloat::x87DoubleExtended();
case IEEEquad:
  return llvm::APFloat::IEEEquad();
case PPCDoubleDouble:
  return llvm::APFloat::PPCDoubleDouble();
}
llvm_unreachable("Unrecognised floating semantics")::llvm::llvm_unreachable_internal("Unrecognised floating semantics"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 873);
874}

876void FloatingLiteral::setSemantics(const llvm::fltSemantics &Sem) {
if (&Sem == &llvm::APFloat::IEEEhalf())
  FloatingLiteralBits.Semantics = IEEEhalf;
else if (&Sem == &llvm::APFloat::IEEEsingle())
  FloatingLiteralBits.Semantics = IEEEsingle;
else if (&Sem == &llvm::APFloat::IEEEdouble())
  FloatingLiteralBits.Semantics = IEEEdouble;
else if (&Sem == &llvm::APFloat::x87DoubleExtended())
  FloatingLiteralBits.Semantics = x87DoubleExtended;
else if (&Sem == &llvm::APFloat::IEEEquad())
  FloatingLiteralBits.Semantics = IEEEquad;
else if (&Sem == &llvm::APFloat::PPCDoubleDouble())
  FloatingLiteralBits.Semantics = PPCDoubleDouble;
else
  llvm_unreachable("Unknown floating semantics")::llvm::llvm_unreachable_internal("Unknown floating semantics"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 890);
891}

893/// getValueAsApproximateDouble - This returns the value as an inaccurate
894/// double.  Note that this may cause loss of precision, but is useful for
895/// debugging dumps, etc.
896double FloatingLiteral::getValueAsApproximateDouble() const {
llvm::APFloat V = getValue();
bool ignored;
V.convert(llvm::APFloat::IEEEdouble(), llvm::APFloat::rmNearestTiesToEven,
          &ignored);
return V.convertToDouble();
902}

904unsigned StringLiteral::mapCharByteWidth(TargetInfo const &Target,
                                       StringKind SK) {
unsigned CharByteWidth = 0;
switch (SK) {
case Ascii:
case UTF8:
  CharByteWidth = Target.getCharWidth();
  break;
case Wide:
  CharByteWidth = Target.getWCharWidth();
  break;
case UTF16:
  CharByteWidth = Target.getChar16Width();
  break;
case UTF32:
  CharByteWidth = Target.getChar32Width();
  break;
}
assert((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple")(((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple"
) ? static_cast<void> (0) : __assert_fail ("(CharByteWidth & 7) == 0 && \"Assumes character size is byte multiple\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 922, __PRETTY_FUNCTION__));
CharByteWidth /= 8;
assert((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) &&(((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth ==
 4) && "The only supported character byte widths are 1,2 and 4!"
) ? static_cast<void> (0) : __assert_fail ("(CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && \"The only supported character byte widths are 1,2 and 4!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 925, __PRETTY_FUNCTION__))
       "The only supported character byte widths are 1,2 and 4!")(((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth ==
 4) && "The only supported character byte widths are 1,2 and 4!"
) ? static_cast<void> (0) : __assert_fail ("(CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && \"The only supported character byte widths are 1,2 and 4!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 925, __PRETTY_FUNCTION__));
return CharByteWidth;
927}

929StringLiteral::StringLiteral(const ASTContext &Ctx, StringRef Str,
                           StringKind Kind, bool Pascal, QualType Ty,
                           const SourceLocation *Loc,
                           unsigned NumConcatenated)
  : Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary, false, false, false,
         false) {
assert(Ctx.getAsConstantArrayType(Ty) &&((Ctx.getAsConstantArrayType(Ty) && "StringLiteral must be of constant array type!"
) ? static_cast<void> (0) : __assert_fail ("Ctx.getAsConstantArrayType(Ty) && \"StringLiteral must be of constant array type!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 936, __PRETTY_FUNCTION__))
       "StringLiteral must be of constant array type!")((Ctx.getAsConstantArrayType(Ty) && "StringLiteral must be of constant array type!"
) ? static_cast<void> (0) : __assert_fail ("Ctx.getAsConstantArrayType(Ty) && \"StringLiteral must be of constant array type!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 936, __PRETTY_FUNCTION__));
unsigned CharByteWidth = mapCharByteWidth(Ctx.getTargetInfo(), Kind);
unsigned ByteLength = Str.size();
assert((ByteLength % CharByteWidth == 0) &&(((ByteLength % CharByteWidth == 0) && "The size of the data must be a multiple of CharByteWidth!"
) ? static_cast<void> (0) : __assert_fail ("(ByteLength % CharByteWidth == 0) && \"The size of the data must be a multiple of CharByteWidth!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 940, __PRETTY_FUNCTION__))
       "The size of the data must be a multiple of CharByteWidth!")(((ByteLength % CharByteWidth == 0) && "The size of the data must be a multiple of CharByteWidth!"
) ? static_cast<void> (0) : __assert_fail ("(ByteLength % CharByteWidth == 0) && \"The size of the data must be a multiple of CharByteWidth!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 940, __PRETTY_FUNCTION__));

// Avoid the expensive division. The compiler should be able to figure it
// out by itself. However as of clang 7, even with the appropriate
// llvm_unreachable added just here, it is not able to do so.
unsigned Length;
switch (CharByteWidth) {
case 1:
  Length = ByteLength;
  break;
case 2:
  Length = ByteLength / 2;
  break;
case 4:
  Length = ByteLength / 4;
  break;
default:
  llvm_unreachable("Unsupported character width!")::llvm::llvm_unreachable_internal("Unsupported character width!"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 957);
}

StringLiteralBits.Kind = Kind;
StringLiteralBits.CharByteWidth = CharByteWidth;
StringLiteralBits.IsPascal = Pascal;
StringLiteralBits.NumConcatenated = NumConcatenated;
*getTrailingObjects<unsigned>() = Length;

// Initialize the trailing array of SourceLocation.
// This is safe since SourceLocation is POD-like.
std::memcpy(getTrailingObjects<SourceLocation>(), Loc,
            NumConcatenated * sizeof(SourceLocation));

// Initialize the trailing array of char holding the string data.
std::memcpy(getTrailingObjects<char>(), Str.data(), ByteLength);
973}

975StringLiteral::StringLiteral(EmptyShell Empty, unsigned NumConcatenated,
                           unsigned Length, unsigned CharByteWidth)
  : Expr(StringLiteralClass, Empty) {
StringLiteralBits.CharByteWidth = CharByteWidth;
StringLiteralBits.NumConcatenated = NumConcatenated;
*getTrailingObjects<unsigned>() = Length;
981}

983StringLiteral *StringLiteral::Create(const ASTContext &Ctx, StringRef Str,
                                   StringKind Kind, bool Pascal, QualType Ty,
                                   const SourceLocation *Loc,
                                   unsigned NumConcatenated) {
void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>(
                             1, NumConcatenated, Str.size()),
                         alignof(StringLiteral));
return new (Mem)
    StringLiteral(Ctx, Str, Kind, Pascal, Ty, Loc, NumConcatenated);
992}

994StringLiteral *StringLiteral::CreateEmpty(const ASTContext &Ctx,
                                        unsigned NumConcatenated,
                                        unsigned Length,
                                        unsigned CharByteWidth) {
void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>(
                             1, NumConcatenated, Length * CharByteWidth),
                         alignof(StringLiteral));
return new (Mem)
    StringLiteral(EmptyShell(), NumConcatenated, Length, CharByteWidth);
1003}

1005void StringLiteral::outputString(raw_ostream &OS) const {
switch (getKind()) {
case Ascii: break; // no prefix.
case Wide:  OS << 'L'; break;
case UTF8:  OS << "u8"; break;
case UTF16: OS << 'u'; break;
case UTF32: OS << 'U'; break;
}
OS << '"';
static const char Hex[] = "0123456789ABCDEF";

unsigned LastSlashX = getLength();
for (unsigned I = 0, N = getLength(); I != N; ++I) {
  switch (uint32_t Char = getCodeUnit(I)) {
  default:
    // FIXME: Convert UTF-8 back to codepoints before rendering.

    // Convert UTF-16 surrogate pairs back to codepoints before rendering.
    // Leave invalid surrogates alone; we'll use \x for those.
    if (getKind() == UTF16 && I != N - 1 && Char >= 0xd800 &&
        Char <= 0xdbff) {
      uint32_t Trail = getCodeUnit(I + 1);
      if (Trail >= 0xdc00 && Trail <= 0xdfff) {
        Char = 0x10000 + ((Char - 0xd800) << 10) + (Trail - 0xdc00);
        ++I;
      }
    }

    if (Char > 0xff) {
      // If this is a wide string, output characters over 0xff using \x
      // escapes. Otherwise, this is a UTF-16 or UTF-32 string, and Char is a
      // codepoint: use \x escapes for invalid codepoints.
      if (getKind() == Wide ||
          (Char >= 0xd800 && Char <= 0xdfff) || Char >= 0x110000) {
        // FIXME: Is this the best way to print wchar_t?
        OS << "\\x";
        int Shift = 28;
        while ((Char >> Shift) == 0)
          Shift -= 4;
        for (/**/; Shift >= 0; Shift -= 4)
          OS << Hex[(Char >> Shift) & 15];
        LastSlashX = I;
        break;
      }

      if (Char > 0xffff)
        OS << "\\U00"
           << Hex[(Char >> 20) & 15]
           << Hex[(Char >> 16) & 15];
      else
        OS << "\\u";
      OS << Hex[(Char >> 12) & 15]
         << Hex[(Char >>  8) & 15]
         << Hex[(Char >>  4) & 15]
         << Hex[(Char >>  0) & 15];
      break;
    }

    // If we used \x... for the previous character, and this character is a
    // hexadecimal digit, prevent it being slurped as part of the \x.
    if (LastSlashX + 1 == I) {
      switch (Char) {
        case '0': case '1': case '2': case '3': case '4':
        case '5': case '6': case '7': case '8': case '9':
        case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
          OS << "\"\"";
      }
    }

    assert(Char <= 0xff &&((Char <= 0xff && "Characters above 0xff should already have been handled."
) ? static_cast<void> (0) : __assert_fail ("Char <= 0xff && \"Characters above 0xff should already have been handled.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1076, __PRETTY_FUNCTION__))
           "Characters above 0xff should already have been handled.")((Char <= 0xff && "Characters above 0xff should already have been handled."
) ? static_cast<void> (0) : __assert_fail ("Char <= 0xff && \"Characters above 0xff should already have been handled.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1076, __PRETTY_FUNCTION__));

    if (isPrintable(Char))
      OS << (char)Char;
    else  // Output anything hard as an octal escape.
      OS << '\\'
         << (char)('0' + ((Char >> 6) & 7))
         << (char)('0' + ((Char >> 3) & 7))
         << (char)('0' + ((Char >> 0) & 7));
    break;
  // Handle some common non-printable cases to make dumps prettier.
  case '\\': OS << "\\\\"; break;
  case '"': OS << "\\\""; break;
  case '\a': OS << "\\a"; break;
  case '\b': OS << "\\b"; break;
  case '\f': OS << "\\f"; break;
  case '\n': OS << "\\n"; break;
  case '\r': OS << "\\r"; break;
  case '\t': OS << "\\t"; break;
  case '\v': OS << "\\v"; break;
  }
}
OS << '"';
1099}

1101/// getLocationOfByte - Return a source location that points to the specified
1102/// byte of this string literal.
1103///
1104/// Strings are amazingly complex.  They can be formed from multiple tokens and
1105/// can have escape sequences in them in addition to the usual trigraph and
1106/// escaped newline business.  This routine handles this complexity.
1107///
1108/// The *StartToken sets the first token to be searched in this function and
1109/// the *StartTokenByteOffset is the byte offset of the first token. Before
1110/// returning, it updates the *StartToken to the TokNo of the token being found
1111/// and sets *StartTokenByteOffset to the byte offset of the token in the
1112/// string.
1113/// Using these two parameters can reduce the time complexity from O(n^2) to
1114/// O(n) if one wants to get the location of byte for all the tokens in a
1115/// string.
1116///
1117SourceLocation
1118StringLiteral::getLocationOfByte(unsigned ByteNo, const SourceManager &SM,
                               const LangOptions &Features,
                               const TargetInfo &Target, unsigned *StartToken,
                               unsigned *StartTokenByteOffset) const {
assert((getKind() == StringLiteral::Ascii ||(((getKind() == StringLiteral::Ascii || getKind() == StringLiteral
::UTF8) && "Only narrow string literals are currently supported"
) ? static_cast<void> (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1124, __PRETTY_FUNCTION__))
        getKind() == StringLiteral::UTF8) &&(((getKind() == StringLiteral::Ascii || getKind() == StringLiteral
::UTF8) && "Only narrow string literals are currently supported"
) ? static_cast<void> (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1124, __PRETTY_FUNCTION__))
       "Only narrow string literals are currently supported")(((getKind() == StringLiteral::Ascii || getKind() == StringLiteral
::UTF8) && "Only narrow string literals are currently supported"
) ? static_cast<void> (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1124, __PRETTY_FUNCTION__));

// Loop over all of the tokens in this string until we find the one that
// contains the byte we're looking for.
unsigned TokNo = 0;
unsigned StringOffset = 0;
if (StartToken)
  TokNo = *StartToken;
if (StartTokenByteOffset) {
  StringOffset = *StartTokenByteOffset;
  ByteNo -= StringOffset;
}
while (1) {
  assert(TokNo < getNumConcatenated() && "Invalid byte number!")((TokNo < getNumConcatenated() && "Invalid byte number!"
) ? static_cast<void> (0) : __assert_fail ("TokNo < getNumConcatenated() && \"Invalid byte number!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1137, __PRETTY_FUNCTION__));
  SourceLocation StrTokLoc = getStrTokenLoc(TokNo);

  // Get the spelling of the string so that we can get the data that makes up
  // the string literal, not the identifier for the macro it is potentially
  // expanded through.
  SourceLocation StrTokSpellingLoc = SM.getSpellingLoc(StrTokLoc);

  // Re-lex the token to get its length and original spelling.
  std::pair<FileID, unsigned> LocInfo =
      SM.getDecomposedLoc(StrTokSpellingLoc);
  bool Invalid = false;
  StringRef Buffer = SM.getBufferData(LocInfo.first, &Invalid);
  if (Invalid) {
    if (StartTokenByteOffset != nullptr)
      *StartTokenByteOffset = StringOffset;
    if (StartToken != nullptr)
      *StartToken = TokNo;
    return StrTokSpellingLoc;
  }

  const char *StrData = Buffer.data()+LocInfo.second;

  // Create a lexer starting at the beginning of this token.
  Lexer TheLexer(SM.getLocForStartOfFile(LocInfo.first), Features,
                 Buffer.begin(), StrData, Buffer.end());
  Token TheTok;
  TheLexer.LexFromRawLexer(TheTok);

  // Use the StringLiteralParser to compute the length of the string in bytes.
  StringLiteralParser SLP(TheTok, SM, Features, Target);
  unsigned TokNumBytes = SLP.GetStringLength();

  // If the byte is in this token, return the location of the byte.
  if (ByteNo < TokNumBytes ||
      (ByteNo == TokNumBytes && TokNo == getNumConcatenated() - 1)) {
    unsigned Offset = SLP.getOffsetOfStringByte(TheTok, ByteNo);

    // Now that we know the offset of the token in the spelling, use the
    // preprocessor to get the offset in the original source.
    if (StartTokenByteOffset != nullptr)
      *StartTokenByteOffset = StringOffset;
    if (StartToken != nullptr)
      *StartToken = TokNo;
    return Lexer::AdvanceToTokenCharacter(StrTokLoc, Offset, SM, Features);
  }

  // Move to the next string token.
  StringOffset += TokNumBytes;
  ++TokNo;
  ByteNo -= TokNumBytes;
}
1189}

1191/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
1192/// corresponds to, e.g. "sizeof" or "[pre]++".
1193StringRef UnaryOperator::getOpcodeStr(Opcode Op) {
switch (Op) {
1195#define UNARY_OPERATION(Name, Spelling) case UO_##Name: return Spelling;
1196#include "clang/AST/OperationKinds.def"
}
llvm_unreachable("Unknown unary operator")::llvm::llvm_unreachable_internal("Unknown unary operator", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1198);
1199}

1201UnaryOperatorKind
1202UnaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix) {
switch (OO) {
default: llvm_unreachable("No unary operator for overloaded function")::llvm::llvm_unreachable_internal("No unary operator for overloaded function"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1204);
case OO_PlusPlus:   return Postfix ? UO_PostInc : UO_PreInc;
case OO_MinusMinus: return Postfix ? UO_PostDec : UO_PreDec;
case OO_Amp:        return UO_AddrOf;
case OO_Star:       return UO_Deref;
case OO_Plus:       return UO_Plus;
case OO_Minus:      return UO_Minus;
case OO_Tilde:      return UO_Not;
case OO_Exclaim:    return UO_LNot;
case OO_Coawait:    return UO_Coawait;
}
1215}

1217OverloadedOperatorKind UnaryOperator::getOverloadedOperator(Opcode Opc) {
switch (Opc) {
case UO_PostInc: case UO_PreInc: return OO_PlusPlus;
case UO_PostDec: case UO_PreDec: return OO_MinusMinus;
case UO_AddrOf: return OO_Amp;
case UO_Deref: return OO_Star;
case UO_Plus: return OO_Plus;
case UO_Minus: return OO_Minus;
case UO_Not: return OO_Tilde;
case UO_LNot: return OO_Exclaim;
case UO_Coawait: return OO_Coawait;
default: return OO_None;
}
1230}


1233//===----------------------------------------------------------------------===//
1234// Postfix Operators.
1235//===----------------------------------------------------------------------===//

1237CallExpr::CallExpr(StmtClass SC, Expr *Fn, ArrayRef<Expr *> PreArgs,
                 ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
                 SourceLocation RParenLoc, unsigned MinNumArgs,
                 ADLCallKind UsesADL)
  : Expr(SC, Ty, VK, OK_Ordinary, Fn->isTypeDependent(),
         Fn->isValueDependent(), Fn->isInstantiationDependent(),
         Fn->containsUnexpandedParameterPack()),
    RParenLoc(RParenLoc) {
NumArgs = std::max<unsigned>(Args.size(), MinNumArgs);
unsigned NumPreArgs = PreArgs.size();
CallExprBits.NumPreArgs = NumPreArgs;
assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!")(((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!"
) ? static_cast<void> (0) : __assert_fail ("(NumPreArgs == getNumPreArgs()) && \"NumPreArgs overflow!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1248, __PRETTY_FUNCTION__));

unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC);
CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects;
assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects
) && "OffsetToTrailingObjects overflow!") ? static_cast
<void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1253, __PRETTY_FUNCTION__))
       "OffsetToTrailingObjects overflow!")(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects
) && "OffsetToTrailingObjects overflow!") ? static_cast
<void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1253, __PRETTY_FUNCTION__));

CallExprBits.UsesADL = static_cast<bool>(UsesADL);

setCallee(Fn);
for (unsigned I = 0; I != NumPreArgs; ++I) {
  updateDependenciesFromArg(PreArgs[I]);
  setPreArg(I, PreArgs[I]);
}
for (unsigned I = 0; I != Args.size(); ++I) {
  updateDependenciesFromArg(Args[I]);
  setArg(I, Args[I]);
}
for (unsigned I = Args.size(); I != NumArgs; ++I) {
  setArg(I, nullptr);
}
1269}

1271CallExpr::CallExpr(StmtClass SC, unsigned NumPreArgs, unsigned NumArgs,
                 EmptyShell Empty)
  : Expr(SC, Empty), NumArgs(NumArgs) {
CallExprBits.NumPreArgs = NumPreArgs;
assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!")(((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!"
) ? static_cast<void> (0) : __assert_fail ("(NumPreArgs == getNumPreArgs()) && \"NumPreArgs overflow!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1275, __PRETTY_FUNCTION__));

unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC);
CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects;
assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects
) && "OffsetToTrailingObjects overflow!") ? static_cast
<void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1280, __PRETTY_FUNCTION__))
       "OffsetToTrailingObjects overflow!")(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects
) && "OffsetToTrailingObjects overflow!") ? static_cast
<void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1280, __PRETTY_FUNCTION__));
1281}

1283CallExpr *CallExpr::Create(const ASTContext &Ctx, Expr *Fn,
                         ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
                         SourceLocation RParenLoc, unsigned MinNumArgs,
                         ADLCallKind UsesADL) {
unsigned NumArgs = std::max<unsigned>(Args.size(), MinNumArgs);
unsigned SizeOfTrailingObjects =
    CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
void *Mem =
    Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr));
return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, Args, Ty, VK,
                          RParenLoc, MinNumArgs, UsesADL);
1294}

1296CallExpr *CallExpr::CreateTemporary(void *Mem, Expr *Fn, QualType Ty,
                                  ExprValueKind VK, SourceLocation RParenLoc,
                                  ADLCallKind UsesADL) {
assert(!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) &&((!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr
)) && "Misaligned memory in CallExpr::CreateTemporary!"
) ? static_cast<void> (0) : __assert_fail ("!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) && \"Misaligned memory in CallExpr::CreateTemporary!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1300, __PRETTY_FUNCTION__))
       "Misaligned memory in CallExpr::CreateTemporary!")((!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr
)) && "Misaligned memory in CallExpr::CreateTemporary!"
) ? static_cast<void> (0) : __assert_fail ("!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) && \"Misaligned memory in CallExpr::CreateTemporary!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1300, __PRETTY_FUNCTION__));
return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, /*Args=*/{}, Ty,
                          VK, RParenLoc, /*MinNumArgs=*/0, UsesADL);
1303}

1305CallExpr *CallExpr::CreateEmpty(const ASTContext &Ctx, unsigned NumArgs,
                              EmptyShell Empty) {
unsigned SizeOfTrailingObjects =
    CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs);
void *Mem =
    Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr));
return new (Mem) CallExpr(CallExprClass, /*NumPreArgs=*/0, NumArgs, Empty);
1312}

1314unsigned CallExpr::offsetToTrailingObjects(StmtClass SC) {
switch (SC) {
case CallExprClass:
  return sizeof(CallExpr);
case CXXOperatorCallExprClass:
  return sizeof(CXXOperatorCallExpr);
case CXXMemberCallExprClass:
  return sizeof(CXXMemberCallExpr);
case UserDefinedLiteralClass:
  return sizeof(UserDefinedLiteral);
case CUDAKernelCallExprClass:
  return sizeof(CUDAKernelCallExpr);
default:
  llvm_unreachable("unexpected class deriving from CallExpr!")::llvm::llvm_unreachable_internal("unexpected class deriving from CallExpr!"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1327);
}
1329}

1331void CallExpr::updateDependenciesFromArg(Expr *Arg) {
if (Arg->isTypeDependent())
  ExprBits.TypeDependent = true;
if (Arg->isValueDependent())
  ExprBits.ValueDependent = true;
if (Arg->isInstantiationDependent())
  ExprBits.InstantiationDependent = true;
if (Arg->containsUnexpandedParameterPack())
  ExprBits.ContainsUnexpandedParameterPack = true;
1340}

1342Decl *Expr::getReferencedDeclOfCallee() {
Expr *CEE = IgnoreParenImpCasts();

while (SubstNonTypeTemplateParmExpr *NTTP
                              = dyn_cast<SubstNonTypeTemplateParmExpr>(CEE)) {
  CEE = NTTP->getReplacement()->IgnoreParenCasts();
}

// If we're calling a dereference, look at the pointer instead.
if (BinaryOperator *BO = dyn_cast<BinaryOperator>(CEE)) {
  if (BO->isPtrMemOp())
    CEE = BO->getRHS()->IgnoreParenCasts();
} else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(CEE)) {
  if (UO->getOpcode() == UO_Deref)
    CEE = UO->getSubExpr()->IgnoreParenCasts();
}
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CEE))
  return DRE->getDecl();
if (MemberExpr *ME = dyn_cast<MemberExpr>(CEE))
  return ME->getMemberDecl();
if (auto *BE = dyn_cast<BlockExpr>(CEE))
  return BE->getBlockDecl();

return nullptr;
1366}

1368/// getBuiltinCallee - If this is a call to a builtin, return the builtin ID. If
1369/// not, return 0.
1370unsigned CallExpr::getBuiltinCallee() const {
// All simple function calls (e.g. func()) are implicitly cast to pointer to
// function. As a result, we try and obtain the DeclRefExpr from the
// ImplicitCastExpr.
const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee());
if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()).
  return 0;

const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr());
if (!DRE)
  return 0;

const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl());
if (!FDecl)
  return 0;

if (!FDecl->getIdentifier())
  return 0;

return FDecl->getBuiltinID();
1390}

1392bool CallExpr::isUnevaluatedBuiltinCall(const ASTContext &Ctx) const {
if (unsigned BI = getBuiltinCallee())
  return Ctx.BuiltinInfo.isUnevaluated(BI);
return false;
1396}

1398QualType CallExpr::getCallReturnType(const ASTContext &Ctx) const {
const Expr *Callee = getCallee();
QualType CalleeType = Callee->getType();
if (const auto *FnTypePtr = CalleeType->getAs<PointerType>()) {
  CalleeType = FnTypePtr->getPointeeType();
} else if (const auto *BPT = CalleeType->getAs<BlockPointerType>()) {
  CalleeType = BPT->getPointeeType();
} else if (CalleeType->isSpecificPlaceholderType(BuiltinType::BoundMember)) {
  if (isa<CXXPseudoDestructorExpr>(Callee->IgnoreParens()))
    return Ctx.VoidTy;

  // This should never be overloaded and so should never return null.
  CalleeType = Expr::findBoundMemberType(Callee);
}

const FunctionType *FnType = CalleeType->castAs<FunctionType>();
return FnType->getReturnType();
1415}

1417const Attr *CallExpr::getUnusedResultAttr(const ASTContext &Ctx) const {
// If the return type is a struct, union, or enum that is marked nodiscard,
// then return the return type attribute.
if (const TagDecl *TD = getCallReturnType(Ctx)->getAsTagDecl())
  if (const auto *A = TD->getAttr<WarnUnusedResultAttr>())
    return A;

// Otherwise, see if the callee is marked nodiscard and return that attribute
// instead.
const Decl *D = getCalleeDecl();
return D ? D->getAttr<WarnUnusedResultAttr>() : nullptr;
1428}

1430SourceLocation CallExpr::getBeginLoc() const {
if (isa<CXXOperatorCallExpr>(this))
  return cast<CXXOperatorCallExpr>(this)->getBeginLoc();

SourceLocation begin = getCallee()->getBeginLoc();
if (begin.isInvalid() && getNumArgs() > 0 && getArg(0))
  begin = getArg(0)->getBeginLoc();
return begin;
1438}
1439SourceLocation CallExpr::getEndLoc() const {
if (isa<CXXOperatorCallExpr>(this))
  return cast<CXXOperatorCallExpr>(this)->getEndLoc();

SourceLocation end = getRParenLoc();
if (end.isInvalid() && getNumArgs() > 0 && getArg(getNumArgs() - 1))
  end = getArg(getNumArgs() - 1)->getEndLoc();
return end;
1447}

1449OffsetOfExpr *OffsetOfExpr::Create(const ASTContext &C, QualType type,
                                 SourceLocation OperatorLoc,
                                 TypeSourceInfo *tsi,
                                 ArrayRef<OffsetOfNode> comps,
                                 ArrayRef<Expr*> exprs,
                                 SourceLocation RParenLoc) {
void *Mem = C.Allocate(
    totalSizeToAlloc<OffsetOfNode, Expr *>(comps.size(), exprs.size()));

return new (Mem) OffsetOfExpr(C, type, OperatorLoc, tsi, comps, exprs,
                              RParenLoc);
1460}

1462OffsetOfExpr *OffsetOfExpr::CreateEmpty(const ASTContext &C,
                                      unsigned numComps, unsigned numExprs) {
void *Mem =
    C.Allocate(totalSizeToAlloc<OffsetOfNode, Expr *>(numComps, numExprs));
return new (Mem) OffsetOfExpr(numComps, numExprs);
1467}

1469OffsetOfExpr::OffsetOfExpr(const ASTContext &C, QualType type,
                         SourceLocation OperatorLoc, TypeSourceInfo *tsi,
                         ArrayRef<OffsetOfNode> comps, ArrayRef<Expr*> exprs,
                         SourceLocation RParenLoc)
: Expr(OffsetOfExprClass, type, VK_RValue, OK_Ordinary,
       /*TypeDependent=*/false,
       /*ValueDependent=*/tsi->getType()->isDependentType(),
       tsi->getType()->isInstantiationDependentType(),
       tsi->getType()->containsUnexpandedParameterPack()),
  OperatorLoc(OperatorLoc), RParenLoc(RParenLoc), TSInfo(tsi),
  NumComps(comps.size()), NumExprs(exprs.size())
1480{
for (unsigned i = 0; i != comps.size(); ++i) {
  setComponent(i, comps[i]);
}

for (unsigned i = 0; i != exprs.size(); ++i) {
  if (exprs[i]->isTypeDependent() || exprs[i]->isValueDependent())
    ExprBits.ValueDependent = true;
  if (exprs[i]->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;

  setIndexExpr(i, exprs[i]);
}
1493}

1495IdentifierInfo *OffsetOfNode::getFieldName() const {
assert(getKind() == Field || getKind() == Identifier)((getKind() == Field || getKind() == Identifier) ? static_cast
<void> (0) : __assert_fail ("getKind() == Field || getKind() == Identifier"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1496, __PRETTY_FUNCTION__));
if (getKind() == Field)
  return getField()->getIdentifier();

return reinterpret_cast<IdentifierInfo *> (Data & ~(uintptr_t)Mask);
1501}

1503UnaryExprOrTypeTraitExpr::UnaryExprOrTypeTraitExpr(
  UnaryExprOrTypeTrait ExprKind, Expr *E, QualType resultType,
  SourceLocation op, SourceLocation rp)
  : Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary,
         false, // Never type-dependent (C++ [temp.dep.expr]p3).
         // Value-dependent if the argument is type-dependent.
         E->isTypeDependent(), E->isInstantiationDependent(),
         E->containsUnexpandedParameterPack()),
    OpLoc(op), RParenLoc(rp) {
UnaryExprOrTypeTraitExprBits.Kind = ExprKind;
UnaryExprOrTypeTraitExprBits.IsType = false;
Argument.Ex = E;

// Check to see if we are in the situation where alignof(decl) should be
// dependent because decl's alignment is dependent.
if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) {
  if (!isValueDependent() || !isInstantiationDependent()) {
    E = E->IgnoreParens();

    const ValueDecl *D = nullptr;
    if (const auto *DRE = dyn_cast<DeclRefExpr>(E))
      D = DRE->getDecl();
    else if (const auto *ME = dyn_cast<MemberExpr>(E))
      D = ME->getMemberDecl();

    if (D) {
      for (const auto *I : D->specific_attrs<AlignedAttr>()) {
        if (I->isAlignmentDependent()) {
          setValueDependent(true);
          setInstantiationDependent(true);
          break;
        }
      }
    }
  }
}
1539}

1541MemberExpr *MemberExpr::Create(
  const ASTContext &C, Expr *base, bool isarrow, SourceLocation OperatorLoc,
  NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
  ValueDecl *memberdecl, DeclAccessPair founddecl,
  DeclarationNameInfo nameinfo, const TemplateArgumentListInfo *targs,
  QualType ty, ExprValueKind vk, ExprObjectKind ok) {

bool hasQualOrFound = (QualifierLoc ||
                       founddecl.getDecl() != memberdecl ||
                       founddecl.getAccess() != memberdecl->getAccess());

bool HasTemplateKWAndArgsInfo = targs || TemplateKWLoc.isValid();
std::size_t Size =
    totalSizeToAlloc<MemberExprNameQualifier, ASTTemplateKWAndArgsInfo,
                     TemplateArgumentLoc>(hasQualOrFound ? 1 : 0,
                                          HasTemplateKWAndArgsInfo ? 1 : 0,
                                          targs ? targs->size() : 0);

void *Mem = C.Allocate(Size, alignof(MemberExpr));
MemberExpr *E = new (Mem)
    MemberExpr(base, isarrow, OperatorLoc, memberdecl, nameinfo, ty, vk, ok);

if (hasQualOrFound) {
  // FIXME: Wrong. We should be looking at the member declaration we found.
  if (QualifierLoc && QualifierLoc.getNestedNameSpecifier()->isDependent()) {
    E->setValueDependent(true);
    E->setTypeDependent(true);
    E->setInstantiationDependent(true);
  }
  else if (QualifierLoc &&
           QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent())
    E->setInstantiationDependent(true);

  E->MemberExprBits.HasQualifierOrFoundDecl = true;

  MemberExprNameQualifier *NQ =
      E->getTrailingObjects<MemberExprNameQualifier>();
  NQ->QualifierLoc = QualifierLoc;
  NQ->FoundDecl = founddecl;
}

E->MemberExprBits.HasTemplateKWAndArgsInfo =
    (targs || TemplateKWLoc.isValid());

if (targs) {
  bool Dependent = false;
  bool InstantiationDependent = false;
  bool ContainsUnexpandedParameterPack = false;
  E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
      TemplateKWLoc, *targs, E->getTrailingObjects<TemplateArgumentLoc>(),
      Dependent, InstantiationDependent, ContainsUnexpandedParameterPack);
  if (InstantiationDependent)
    E->setInstantiationDependent(true);
} else if (TemplateKWLoc.isValid()) {
  E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom(
      TemplateKWLoc);
}

return E;
1600}

1602SourceLocation MemberExpr::getBeginLoc() const {
if (isImplicitAccess()) {
  if (hasQualifier())
    return getQualifierLoc().getBeginLoc();
  return MemberLoc;
}

// FIXME: We don't want this to happen. Rather, we should be able to
// detect all kinds of implicit accesses more cleanly.
SourceLocation BaseStartLoc = getBase()->getBeginLoc();
if (BaseStartLoc.isValid())
  return BaseStartLoc;
return MemberLoc;
1615}
1616SourceLocation MemberExpr::getEndLoc() const {
SourceLocation EndLoc = getMemberNameInfo().getEndLoc();
if (hasExplicitTemplateArgs())
  EndLoc = getRAngleLoc();
else if (EndLoc.isInvalid())
  EndLoc = getBase()->getEndLoc();
return EndLoc;
1623}

1625bool CastExpr::CastConsistency() const {
switch (getCastKind()) {
case CK_DerivedToBase:
case CK_UncheckedDerivedToBase:
case CK_DerivedToBaseMemberPointer:
case CK_BaseToDerived:
case CK_BaseToDerivedMemberPointer:
  assert(!path_empty() && "Cast kind should have a base path!")((!path_empty() && "Cast kind should have a base path!"
) ? static_cast<void> (0) : __assert_fail ("!path_empty() && \"Cast kind should have a base path!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1632, __PRETTY_FUNCTION__));
  break;

case CK_CPointerToObjCPointerCast:
  assert(getType()->isObjCObjectPointerType())((getType()->isObjCObjectPointerType()) ? static_cast<void
> (0) : __assert_fail ("getType()->isObjCObjectPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1636, __PRETTY_FUNCTION__));
  assert(getSubExpr()->getType()->isPointerType())((getSubExpr()->getType()->isPointerType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1637, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_BlockPointerToObjCPointerCast:
  assert(getType()->isObjCObjectPointerType())((getType()->isObjCObjectPointerType()) ? static_cast<void
> (0) : __assert_fail ("getType()->isObjCObjectPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1641, __PRETTY_FUNCTION__));
  assert(getSubExpr()->getType()->isBlockPointerType())((getSubExpr()->getType()->isBlockPointerType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isBlockPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1642, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_ReinterpretMemberPointer:
  assert(getType()->isMemberPointerType())((getType()->isMemberPointerType()) ? static_cast<void>
 (0) : __assert_fail ("getType()->isMemberPointerType()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1646, __PRETTY_FUNCTION__));
  assert(getSubExpr()->getType()->isMemberPointerType())((getSubExpr()->getType()->isMemberPointerType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isMemberPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1647, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_BitCast:
  // Arbitrary casts to C pointer types count as bitcasts.
  // Otherwise, we should only have block and ObjC pointer casts
  // here if they stay within the type kind.
  if (!getType()->isPointerType()) {
    assert(getType()->isObjCObjectPointerType() ==((getType()->isObjCObjectPointerType() == getSubExpr()->
getType()->isObjCObjectPointerType()) ? static_cast<void
> (0) : __assert_fail ("getType()->isObjCObjectPointerType() == getSubExpr()->getType()->isObjCObjectPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1656, __PRETTY_FUNCTION__))
           getSubExpr()->getType()->isObjCObjectPointerType())((getType()->isObjCObjectPointerType() == getSubExpr()->
getType()->isObjCObjectPointerType()) ? static_cast<void
> (0) : __assert_fail ("getType()->isObjCObjectPointerType() == getSubExpr()->getType()->isObjCObjectPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1656, __PRETTY_FUNCTION__));
    assert(getType()->isBlockPointerType() ==((getType()->isBlockPointerType() == getSubExpr()->getType
()->isBlockPointerType()) ? static_cast<void> (0) : __assert_fail
 ("getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1658, __PRETTY_FUNCTION__))
           getSubExpr()->getType()->isBlockPointerType())((getType()->isBlockPointerType() == getSubExpr()->getType
()->isBlockPointerType()) ? static_cast<void> (0) : __assert_fail
 ("getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1658, __PRETTY_FUNCTION__));
  }
  goto CheckNoBasePath;

case CK_AnyPointerToBlockPointerCast:
  assert(getType()->isBlockPointerType())((getType()->isBlockPointerType()) ? static_cast<void>
 (0) : __assert_fail ("getType()->isBlockPointerType()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1663, __PRETTY_FUNCTION__));
  assert(getSubExpr()->getType()->isAnyPointerType() &&((getSubExpr()->getType()->isAnyPointerType() &&
 !getSubExpr()->getType()->isBlockPointerType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1665, __PRETTY_FUNCTION__))
         !getSubExpr()->getType()->isBlockPointerType())((getSubExpr()->getType()->isAnyPointerType() &&
 !getSubExpr()->getType()->isBlockPointerType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1665, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_CopyAndAutoreleaseBlockObject:
  assert(getType()->isBlockPointerType())((getType()->isBlockPointerType()) ? static_cast<void>
 (0) : __assert_fail ("getType()->isBlockPointerType()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1669, __PRETTY_FUNCTION__));
  assert(getSubExpr()->getType()->isBlockPointerType())((getSubExpr()->getType()->isBlockPointerType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isBlockPointerType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1670, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_FunctionToPointerDecay:
  assert(getType()->isPointerType())((getType()->isPointerType()) ? static_cast<void> (0
) : __assert_fail ("getType()->isPointerType()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1674, __PRETTY_FUNCTION__));
  assert(getSubExpr()->getType()->isFunctionType())((getSubExpr()->getType()->isFunctionType()) ? static_cast
<void> (0) : __assert_fail ("getSubExpr()->getType()->isFunctionType()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1675, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_AddressSpaceConversion: {
  auto Ty = getType();
  auto SETy = getSubExpr()->getType();
  assert(getValueKindForType(Ty) == Expr::getValueKindForType(SETy))((getValueKindForType(Ty) == Expr::getValueKindForType(SETy))
 ? static_cast<void> (0) : __assert_fail ("getValueKindForType(Ty) == Expr::getValueKindForType(SETy)"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1681, __PRETTY_FUNCTION__));
  if (/*isRValue()*/ !Ty->getPointeeType().isNull()) {
    Ty = Ty->getPointeeType();
    SETy = SETy->getPointeeType();
  }
  assert(!Ty.isNull() && !SETy.isNull() &&((!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace
() != SETy.getAddressSpace()) ? static_cast<void> (0) :
 __assert_fail ("!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1687, __PRETTY_FUNCTION__))
         Ty.getAddressSpace() != SETy.getAddressSpace())((!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace
() != SETy.getAddressSpace()) ? static_cast<void> (0) :
 __assert_fail ("!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace()"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1687, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;
}
// These should not have an inheritance path.
case CK_Dynamic:
case CK_ToUnion:
case CK_ArrayToPointerDecay:
case CK_NullToMemberPointer:
case CK_NullToPointer:
case CK_ConstructorConversion:
case CK_IntegralToPointer:
case CK_PointerToIntegral:
case CK_ToVoid:
case CK_VectorSplat:
case CK_IntegralCast:
case CK_BooleanToSignedIntegral:
case CK_IntegralToFloating:
case CK_FloatingToIntegral:
case CK_FloatingCast:
case CK_ObjCObjectLValueCast:
case CK_FloatingRealToComplex:
case CK_FloatingComplexToReal:
case CK_FloatingComplexCast:
case CK_FloatingComplexToIntegralComplex:
case CK_IntegralRealToComplex:
case CK_IntegralComplexToReal:
case CK_IntegralComplexCast:
case CK_IntegralComplexToFloatingComplex:
case CK_ARCProduceObject:
case CK_ARCConsumeObject:
case CK_ARCReclaimReturnedObject:
case CK_ARCExtendBlockObject:
case CK_ZeroToOCLOpaqueType:
case CK_IntToOCLSampler:
case CK_FixedPointCast:
case CK_FixedPointToIntegral:
case CK_IntegralToFixedPoint:
  assert(!getType()->isBooleanType() && "unheralded conversion to bool")((!getType()->isBooleanType() && "unheralded conversion to bool"
) ? static_cast<void> (0) : __assert_fail ("!getType()->isBooleanType() && \"unheralded conversion to bool\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1724, __PRETTY_FUNCTION__));
  goto CheckNoBasePath;

case CK_Dependent:
case CK_LValueToRValue:
case CK_NoOp:
case CK_AtomicToNonAtomic:
case CK_NonAtomicToAtomic:
case CK_PointerToBoolean:
case CK_IntegralToBoolean:
case CK_FloatingToBoolean:
case CK_MemberPointerToBoolean:
case CK_FloatingComplexToBoolean:
case CK_IntegralComplexToBoolean:
case CK_LValueBitCast:            // -> bool&
case CK_UserDefinedConversion:    // operator bool()
case CK_BuiltinFnToFnPtr:
case CK_FixedPointToBoolean:
CheckNoBasePath:
  assert(path_empty() && "Cast kind should not have a base path!")((path_empty() && "Cast kind should not have a base path!"
) ? static_cast<void> (0) : __assert_fail ("path_empty() && \"Cast kind should not have a base path!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1743, __PRETTY_FUNCTION__));
  break;
}
return true;
1747}

1749const char *CastExpr::getCastKindName(CastKind CK) {
switch (CK) {
1751#define CAST_OPERATION(Name) case CK_##Name: return #Name;
1752#include "clang/AST/OperationKinds.def"
}
llvm_unreachable("Unhandled cast kind!")::llvm::llvm_unreachable_internal("Unhandled cast kind!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1754);
1755}

1757namespace {
const Expr *skipImplicitTemporary(const Expr *E) {
  // Skip through reference binding to temporary.
  if (auto *Materialize = dyn_cast<MaterializeTemporaryExpr>(E))
    E = Materialize->GetTemporaryExpr();

  // Skip any temporary bindings; they're implicit.
  if (auto *Binder = dyn_cast<CXXBindTemporaryExpr>(E))
    E = Binder->getSubExpr();

  return E;
}
1769}

1771Expr *CastExpr::getSubExprAsWritten() {
const Expr *SubExpr = nullptr;
const CastExpr *E = this;
do {
  SubExpr = skipImplicitTemporary(E->getSubExpr());

  // Conversions by constructor and conversion functions have a
  // subexpression describing the call; strip it off.
  if (E->getCastKind() == CK_ConstructorConversion)
    SubExpr =
      skipImplicitTemporary(cast<CXXConstructExpr>(SubExpr)->getArg(0));
  else if (E->getCastKind() == CK_UserDefinedConversion) {
    assert((isa<CXXMemberCallExpr>(SubExpr) ||(((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>
(SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion."
) ? static_cast<void> (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1785, __PRETTY_FUNCTION__))
            isa<BlockExpr>(SubExpr)) &&(((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>
(SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion."
) ? static_cast<void> (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1785, __PRETTY_FUNCTION__))
           "Unexpected SubExpr for CK_UserDefinedConversion.")(((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>
(SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion."
) ? static_cast<void> (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1785, __PRETTY_FUNCTION__));
    if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr))
      SubExpr = MCE->getImplicitObjectArgument();
  }

  // If the subexpression we're left with is an implicit cast, look
  // through that, too.
} while ((E = dyn_cast<ImplicitCastExpr>(SubExpr)));

return const_cast<Expr*>(SubExpr);
1795}

1797NamedDecl *CastExpr::getConversionFunction() const {
const Expr *SubExpr = nullptr;

for (const CastExpr *E = this; E; E = dyn_cast<ImplicitCastExpr>(SubExpr)) {
  SubExpr = skipImplicitTemporary(E->getSubExpr());

  if (E->getCastKind() == CK_ConstructorConversion)
    return cast<CXXConstructExpr>(SubExpr)->getConstructor();

  if (E->getCastKind() == CK_UserDefinedConversion) {
    if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr))
      return MCE->getMethodDecl();
  }
}

return nullptr;
1813}

1815CXXBaseSpecifier **CastExpr::path_buffer() {
switch (getStmtClass()) {
1817#define ABSTRACT_STMT(x)
1818#define CASTEXPR(Type, Base)                                                   \
case Stmt::Type##Class:                                                      \
  return static_cast<Type *>(this)->getTrailingObjects<CXXBaseSpecifier *>();
1821#define STMT(Type, Base)
1822#include "clang/AST/StmtNodes.inc"
default:
  llvm_unreachable("non-cast expressions not possible here")::llvm::llvm_unreachable_internal("non-cast expressions not possible here"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1824);
}
1826}

1828const FieldDecl *CastExpr::getTargetFieldForToUnionCast(QualType unionType,
                                                      QualType opType) {
auto RD = unionType->castAs<RecordType>()->getDecl();
return getTargetFieldForToUnionCast(RD, opType);
1832}

1834const FieldDecl *CastExpr::getTargetFieldForToUnionCast(const RecordDecl *RD,
                                                      QualType OpType) {
auto &Ctx = RD->getASTContext();
RecordDecl::field_iterator Field, FieldEnd;
for (Field = RD->field_begin(), FieldEnd = RD->field_end();
     Field != FieldEnd; ++Field) {
  if (Ctx.hasSameUnqualifiedType(Field->getType(), OpType) &&
      !Field->isUnnamedBitfield()) {
    return *Field;
  }
}
return nullptr;
1846}

1848ImplicitCastExpr *ImplicitCastExpr::Create(const ASTContext &C, QualType T,
                                         CastKind Kind, Expr *Operand,
                                         const CXXCastPath *BasePath,
                                         ExprValueKind VK) {
unsigned PathSize = (BasePath ? BasePath->size() : 0);
void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
ImplicitCastExpr *E =
  new (Buffer) ImplicitCastExpr(T, Kind, Operand, PathSize, VK);
if (PathSize)
  std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
                            E->getTrailingObjects<CXXBaseSpecifier *>());
return E;
1860}

1862ImplicitCastExpr *ImplicitCastExpr::CreateEmpty(const ASTContext &C,
                                              unsigned PathSize) {
void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
return new (Buffer) ImplicitCastExpr(EmptyShell(), PathSize);
1866}


1869CStyleCastExpr *CStyleCastExpr::Create(const ASTContext &C, QualType T,
                                     ExprValueKind VK, CastKind K, Expr *Op,
                                     const CXXCastPath *BasePath,
                                     TypeSourceInfo *WrittenTy,
                                     SourceLocation L, SourceLocation R) {
unsigned PathSize = (BasePath ? BasePath->size() : 0);
void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
CStyleCastExpr *E =
  new (Buffer) CStyleCastExpr(T, VK, K, Op, PathSize, WrittenTy, L, R);
if (PathSize)
  std::uninitialized_copy_n(BasePath->data(), BasePath->size(),
                            E->getTrailingObjects<CXXBaseSpecifier *>());
return E;
1882}

1884CStyleCastExpr *CStyleCastExpr::CreateEmpty(const ASTContext &C,
                                          unsigned PathSize) {
void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize));
return new (Buffer) CStyleCastExpr(EmptyShell(), PathSize);
1888}

1890/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
1891/// corresponds to, e.g. "<<=".
1892StringRef BinaryOperator::getOpcodeStr(Opcode Op) {
switch (Op) {
1894#define BINARY_OPERATION(Name, Spelling) case BO_##Name: return Spelling;
1895#include "clang/AST/OperationKinds.def"
}
llvm_unreachable("Invalid OpCode!")::llvm::llvm_unreachable_internal("Invalid OpCode!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1897);
1898}

1900BinaryOperatorKind
1901BinaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO) {
switch (OO) {
default: llvm_unreachable("Not an overloadable binary operator")::llvm::llvm_unreachable_internal("Not an overloadable binary operator"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 1903);
case OO_Plus: return BO_Add;
case OO_Minus: return BO_Sub;
case OO_Star: return BO_Mul;
case OO_Slash: return BO_Div;
case OO_Percent: return BO_Rem;
case OO_Caret: return BO_Xor;
case OO_Amp: return BO_And;
case OO_Pipe: return BO_Or;
case OO_Equal: return BO_Assign;
case OO_Spaceship: return BO_Cmp;
case OO_Less: return BO_LT;
case OO_Greater: return BO_GT;
case OO_PlusEqual: return BO_AddAssign;
case OO_MinusEqual: return BO_SubAssign;
case OO_StarEqual: return BO_MulAssign;
case OO_SlashEqual: return BO_DivAssign;
case OO_PercentEqual: return BO_RemAssign;
case OO_CaretEqual: return BO_XorAssign;
case OO_AmpEqual: return BO_AndAssign;
case OO_PipeEqual: return BO_OrAssign;
case OO_LessLess: return BO_Shl;
case OO_GreaterGreater: return BO_Shr;
case OO_LessLessEqual: return BO_ShlAssign;
case OO_GreaterGreaterEqual: return BO_ShrAssign;
case OO_EqualEqual: return BO_EQ;
case OO_ExclaimEqual: return BO_NE;
case OO_LessEqual: return BO_LE;
case OO_GreaterEqual: return BO_GE;
case OO_AmpAmp: return BO_LAnd;
case OO_PipePipe: return BO_LOr;
case OO_Comma: return BO_Comma;
case OO_ArrowStar: return BO_PtrMemI;
}
1937}

1939OverloadedOperatorKind BinaryOperator::getOverloadedOperator(Opcode Opc) {
static const OverloadedOperatorKind OverOps[] = {
  /* .* Cannot be overloaded */OO_None, OO_ArrowStar,
  OO_Star, OO_Slash, OO_Percent,
  OO_Plus, OO_Minus,
  OO_LessLess, OO_GreaterGreater,
  OO_Spaceship,
  OO_Less, OO_Greater, OO_LessEqual, OO_GreaterEqual,
  OO_EqualEqual, OO_ExclaimEqual,
  OO_Amp,
  OO_Caret,
  OO_Pipe,
  OO_AmpAmp,
  OO_PipePipe,
  OO_Equal, OO_StarEqual,
  OO_SlashEqual, OO_PercentEqual,
  OO_PlusEqual, OO_MinusEqual,
  OO_LessLessEqual, OO_GreaterGreaterEqual,
  OO_AmpEqual, OO_CaretEqual,
  OO_PipeEqual,
  OO_Comma
};
return OverOps[Opc];
1962}

1964bool BinaryOperator::isNullPointerArithmeticExtension(ASTContext &Ctx,
                                                    Opcode Opc,
                                                    Expr *LHS, Expr *RHS) {
if (Opc != BO_Add)
  return false;

// Check that we have one pointer and one integer operand.
Expr *PExp;
if (LHS->getType()->isPointerType()) {
  if (!RHS->getType()->isIntegerType())
    return false;
  PExp = LHS;
} else if (RHS->getType()->isPointerType()) {
  if (!LHS->getType()->isIntegerType())
    return false;
  PExp = RHS;
} else {
  return false;
}

// Check that the pointer is a nullptr.
if (!PExp->IgnoreParenCasts()
        ->isNullPointerConstant(Ctx, Expr::NPC_ValueDependentIsNotNull))
  return false;

// Check that the pointee type is char-sized.
const PointerType *PTy = PExp->getType()->getAs<PointerType>();
if (!PTy || !PTy->getPointeeType()->isCharType())
  return false;

return true;
1995}

1997static QualType getDecayedSourceLocExprType(const ASTContext &Ctx,
                                          SourceLocExpr::IdentKind Kind) {
switch (Kind) {
case SourceLocExpr::File:
case SourceLocExpr::Function: {
  QualType ArrTy = Ctx.getStringLiteralArrayType(Ctx.CharTy, 0);
  return Ctx.getPointerType(ArrTy->getAsArrayTypeUnsafe()->getElementType());
}
case SourceLocExpr::Line:
case SourceLocExpr::Column:
  return Ctx.UnsignedIntTy;
}
llvm_unreachable("unhandled case")::llvm::llvm_unreachable_internal("unhandled case", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2009);
2010}

2012SourceLocExpr::SourceLocExpr(const ASTContext &Ctx, IdentKind Kind,
                           SourceLocation BLoc, SourceLocation RParenLoc,
                           DeclContext *ParentContext)
  : Expr(SourceLocExprClass, getDecayedSourceLocExprType(Ctx, Kind),
         VK_RValue, OK_Ordinary, false, false, false, false),
    BuiltinLoc(BLoc), RParenLoc(RParenLoc), ParentContext(ParentContext) {
SourceLocExprBits.Kind = Kind;
2019}

2021StringRef SourceLocExpr::getBuiltinStr() const {
switch (getIdentKind()) {
case File:
  return "__builtin_FILE";
case Function:
  return "__builtin_FUNCTION";
case Line:
  return "__builtin_LINE";
case Column:
  return "__builtin_COLUMN";
}
llvm_unreachable("unexpected IdentKind!")::llvm::llvm_unreachable_internal("unexpected IdentKind!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2032);
2033}

2035APValue SourceLocExpr::EvaluateInContext(const ASTContext &Ctx,
                                       const Expr *DefaultExpr) const {
SourceLocation Loc;
const DeclContext *Context;

std::tie(Loc,
         Context) = [&]() -> std::pair<SourceLocation, const DeclContext *> {
  if (auto *DIE = dyn_cast_or_null<CXXDefaultInitExpr>(DefaultExpr))
    return {DIE->getUsedLocation(), DIE->getUsedContext()};
  if (auto *DAE = dyn_cast_or_null<CXXDefaultArgExpr>(DefaultExpr))
    return {DAE->getUsedLocation(), DAE->getUsedContext()};
  return {this->getLocation(), this->getParentContext()};
}();

PresumedLoc PLoc = Ctx.getSourceManager().getPresumedLoc(
    Ctx.getSourceManager().getExpansionRange(Loc).getEnd());

auto MakeStringLiteral = [&](StringRef Tmp) {
  using LValuePathEntry = APValue::LValuePathEntry;
  StringLiteral *Res = Ctx.getPredefinedStringLiteralFromCache(Tmp);
  // Decay the string to a pointer to the first character.
  LValuePathEntry Path[1] = {LValuePathEntry::ArrayIndex(0)};
  return APValue(Res, CharUnits::Zero(), Path, /*OnePastTheEnd=*/false);
};

switch (getIdentKind()) {
case SourceLocExpr::File:
  return MakeStringLiteral(PLoc.getFilename());
case SourceLocExpr::Function: {
  const Decl *CurDecl = dyn_cast_or_null<Decl>(Context);
  return MakeStringLiteral(
      CurDecl ? PredefinedExpr::ComputeName(PredefinedExpr::Function, CurDecl)
              : std::string(""));
}
case SourceLocExpr::Line:
case SourceLocExpr::Column: {
  llvm::APSInt IntVal(Ctx.getIntWidth(Ctx.UnsignedIntTy),
                      /*IsUnsigned=*/true);
  IntVal = getIdentKind() == SourceLocExpr::Line ? PLoc.getLine()
                                                 : PLoc.getColumn();
  return APValue(IntVal);
}
}
llvm_unreachable("unhandled case")::llvm::llvm_unreachable_internal("unhandled case", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2078);
2079}

2081InitListExpr::InitListExpr(const ASTContext &C, SourceLocation lbraceloc,
                         ArrayRef<Expr*> initExprs, SourceLocation rbraceloc)
: Expr(InitListExprClass, QualType(), VK_RValue, OK_Ordinary, false, false,
       false, false),
  InitExprs(C, initExprs.size()),
  LBraceLoc(lbraceloc), RBraceLoc(rbraceloc), AltForm(nullptr, true)
2087{
sawArrayRangeDesignator(false);
for (unsigned I = 0; I != initExprs.size(); ++I) {
  if (initExprs[I]->isTypeDependent())
    ExprBits.TypeDependent = true;
  if (initExprs[I]->isValueDependent())
    ExprBits.ValueDependent = true;
  if (initExprs[I]->isInstantiationDependent())
    ExprBits.InstantiationDependent = true;
  if (initExprs[I]->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;
}

InitExprs.insert(C, InitExprs.end(), initExprs.begin(), initExprs.end());
2101}

2103void InitListExpr::reserveInits(const ASTContext &C, unsigned NumInits) {
if (NumInits > InitExprs.size())
  InitExprs.reserve(C, NumInits);
2106}

2108void InitListExpr::resizeInits(const ASTContext &C, unsigned NumInits) {
InitExprs.resize(C, NumInits, nullptr);
2110}

2112Expr *InitListExpr::updateInit(const ASTContext &C, unsigned Init, Expr *expr) {
if (Init >= InitExprs.size()) {
  InitExprs.insert(C, InitExprs.end(), Init - InitExprs.size() + 1, nullptr);
  setInit(Init, expr);
  return nullptr;
}

Expr *Result = cast_or_null<Expr>(InitExprs[Init]);
setInit(Init, expr);
return Result;
2122}

2124void InitListExpr::setArrayFiller(Expr *filler) {
assert(!hasArrayFiller() && "Filler already set!")((!hasArrayFiller() && "Filler already set!") ? static_cast
<void> (0) : __assert_fail ("!hasArrayFiller() && \"Filler already set!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2125, __PRETTY_FUNCTION__));
ArrayFillerOrUnionFieldInit = filler;
// Fill out any "holes" in the array due to designated initializers.
Expr **inits = getInits();
for (unsigned i = 0, e = getNumInits(); i != e; ++i)
  if (inits[i] == nullptr)
    inits[i] = filler;
2132}

2134bool InitListExpr::isStringLiteralInit() const {
if (getNumInits() != 1)
  return false;
const ArrayType *AT = getType()->getAsArrayTypeUnsafe();
if (!AT || !AT->getElementType()->isIntegerType())
  return false;
// It is possible for getInit() to return null.
const Expr *Init = getInit(0);
if (!Init)
  return false;
Init = Init->IgnoreParens();
return isa<StringLiteral>(Init) || isa<ObjCEncodeExpr>(Init);
2146}

2148bool InitListExpr::isTransparent() const {
assert(isSemanticForm() && "syntactic form never semantically transparent")((isSemanticForm() && "syntactic form never semantically transparent"
) ? static_cast<void> (0) : __assert_fail ("isSemanticForm() && \"syntactic form never semantically transparent\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2149, __PRETTY_FUNCTION__));

// A glvalue InitListExpr is always just sugar.
if (isGLValue()) {
  assert(getNumInits() == 1 && "multiple inits in glvalue init list")((getNumInits() == 1 && "multiple inits in glvalue init list"
) ? static_cast<void> (0) : __assert_fail ("getNumInits() == 1 && \"multiple inits in glvalue init list\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2153, __PRETTY_FUNCTION__));
  return true;
}

// Otherwise, we're sugar if and only if we have exactly one initializer that
// is of the same type.
if (getNumInits() != 1 || !getInit(0))
  return false;

// Don't confuse aggregate initialization of a struct X { X &x; }; with a
// transparent struct copy.
if (!getInit(0)->isRValue() && getType()->isRecordType())
  return false;

return getType().getCanonicalType() ==
       getInit(0)->getType().getCanonicalType();
2169}

2171bool InitListExpr::isIdiomaticZeroInitializer(const LangOptions &LangOpts) const {
assert(isSyntacticForm() && "only test syntactic form as zero initializer")((isSyntacticForm() && "only test syntactic form as zero initializer"
) ? static_cast<void> (0) : __assert_fail ("isSyntacticForm() && \"only test syntactic form as zero initializer\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2172, __PRETTY_FUNCTION__));

if (LangOpts.CPlusPlus || getNumInits() != 1) {
  return false;
}

const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(getInit(0));
return Lit && Lit->getValue() == 0;
2180}

2182SourceLocation InitListExpr::getBeginLoc() const {
if (InitListExpr *SyntacticForm = getSyntacticForm())
  return SyntacticForm->getBeginLoc();
SourceLocation Beg = LBraceLoc;
if (Beg.isInvalid()) {
  // Find the first non-null initializer.
  for (InitExprsTy::const_iterator I = InitExprs.begin(),
                                   E = InitExprs.end();
    I != E; ++I) {
    if (Stmt *S = *I) {
      Beg = S->getBeginLoc();
      break;
    }
  }
}
return Beg;
2198}

2200SourceLocation InitListExpr::getEndLoc() const {
if (InitListExpr *SyntacticForm = getSyntacticForm())
  return SyntacticForm->getEndLoc();
SourceLocation End = RBraceLoc;
if (End.isInvalid()) {
  // Find the first non-null initializer from the end.
  for (InitExprsTy::const_reverse_iterator I = InitExprs.rbegin(),
       E = InitExprs.rend();
       I != E; ++I) {
    if (Stmt *S = *I) {
      End = S->getEndLoc();
      break;
    }
  }
}
return End;
2216}

2218/// getFunctionType - Return the underlying function type for this block.
2219///
2220const FunctionProtoType *BlockExpr::getFunctionType() const {
// The block pointer is never sugared, but the function type might be.
return cast<BlockPointerType>(getType())
         ->getPointeeType()->castAs<FunctionProtoType>();
2224}

2226SourceLocation BlockExpr::getCaretLocation() const {
return TheBlock->getCaretLocation();
2228}
2229const Stmt *BlockExpr::getBody() const {
return TheBlock->getBody();
2231}
2232Stmt *BlockExpr::getBody() {
return TheBlock->getBody();
2234}


2237//===----------------------------------------------------------------------===//
2238// Generic Expression Routines
2239//===----------------------------------------------------------------------===//

2241/// isUnusedResultAWarning - Return true if this immediate expression should
2242/// be warned about if the result is unused.  If so, fill in Loc and Ranges
2243/// with location to warn on and the source range[s] to report with the
2244/// warning.
2245bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc,
                                SourceRange &R1, SourceRange &R2,
                                ASTContext &Ctx) const {
// Don't warn if the expr is type dependent. The type could end up
// instantiating to void.
if (isTypeDependent())
  return false;

switch (getStmtClass()) {
default:
  if (getType()->isVoidType())
    return false;
  WarnE = this;
  Loc = getExprLoc();
  R1 = getSourceRange();
  return true;
case ParenExprClass:
  return cast<ParenExpr>(this)->getSubExpr()->
    isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
case GenericSelectionExprClass:
  return cast<GenericSelectionExpr>(this)->getResultExpr()->
    isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
case CoawaitExprClass:
case CoyieldExprClass:
  return cast<CoroutineSuspendExpr>(this)->getResumeExpr()->
    isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
case ChooseExprClass:
  return cast<ChooseExpr>(this)->getChosenSubExpr()->
    isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
case UnaryOperatorClass: {
  const UnaryOperator *UO = cast<UnaryOperator>(this);

  switch (UO->getOpcode()) {
  case UO_Plus:
  case UO_Minus:
  case UO_AddrOf:
  case UO_Not:
  case UO_LNot:
  case UO_Deref:
    break;
  case UO_Coawait:
    // This is just the 'operator co_await' call inside the guts of a
    // dependent co_await call.
  case UO_PostInc:
  case UO_PostDec:
  case UO_PreInc:
  case UO_PreDec:                 // ++/--
    return false;  // Not a warning.
  case UO_Real:
  case UO_Imag:
    // accessing a piece of a volatile complex is a side-effect.
    if (Ctx.getCanonicalType(UO->getSubExpr()->getType())
        .isVolatileQualified())
      return false;
    break;
  case UO_Extension:
    return UO->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
  }
  WarnE = this;
  Loc = UO->getOperatorLoc();
  R1 = UO->getSubExpr()->getSourceRange();
  return true;
}
case BinaryOperatorClass: {
  const BinaryOperator *BO = cast<BinaryOperator>(this);
  switch (BO->getOpcode()) {
    default:
      break;
    // Consider the RHS of comma for side effects. LHS was checked by
    // Sema::CheckCommaOperands.
    case BO_Comma:
      // ((foo = <blah>), 0) is an idiom for hiding the result (and
      // lvalue-ness) of an assignment written in a macro.
      if (IntegerLiteral *IE =
            dyn_cast<IntegerLiteral>(BO->getRHS()->IgnoreParens()))
        if (IE->getValue() == 0)
          return false;
      return BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
    // Consider '||', '&&' to have side effects if the LHS or RHS does.
    case BO_LAnd:
    case BO_LOr:
      if (!BO->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx) ||
          !BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx))
        return false;
      break;
  }
  if (BO->isAssignmentOp())
    return false;
  WarnE = this;
  Loc = BO->getOperatorLoc();
  R1 = BO->getLHS()->getSourceRange();
  R2 = BO->getRHS()->getSourceRange();
  return true;
}
case CompoundAssignOperatorClass:
case VAArgExprClass:
case AtomicExprClass:
  return false;

case ConditionalOperatorClass: {
  // If only one of the LHS or RHS is a warning, the operator might
  // be being used for control flow. Only warn if both the LHS and
  // RHS are warnings.
  const ConditionalOperator *Exp = cast<ConditionalOperator>(this);
  if (!Exp->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx))
    return false;
  if (!Exp->getLHS())
    return true;
  return Exp->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
}

case MemberExprClass:
  WarnE = this;
  Loc = cast<MemberExpr>(this)->getMemberLoc();
  R1 = SourceRange(Loc, Loc);
  R2 = cast<MemberExpr>(this)->getBase()->getSourceRange();
  return true;

case ArraySubscriptExprClass:
  WarnE = this;
  Loc = cast<ArraySubscriptExpr>(this)->getRBracketLoc();
  R1 = cast<ArraySubscriptExpr>(this)->getLHS()->getSourceRange();
  R2 = cast<ArraySubscriptExpr>(this)->getRHS()->getSourceRange();
  return true;

case CXXOperatorCallExprClass: {
  // Warn about operator ==,!=,<,>,<=, and >= even when user-defined operator
  // overloads as there is no reasonable way to define these such that they
  // have non-trivial, desirable side-effects. See the -Wunused-comparison
  // warning: operators == and != are commonly typo'ed, and so warning on them
  // provides additional value as well. If this list is updated,
  // DiagnoseUnusedComparison should be as well.
  const CXXOperatorCallExpr *Op = cast<CXXOperatorCallExpr>(this);
  switch (Op->getOperator()) {
  default:
    break;
  case OO_EqualEqual:
  case OO_ExclaimEqual:
  case OO_Less:
  case OO_Greater:
  case OO_GreaterEqual:
  case OO_LessEqual:
    if (Op->getCallReturnType(Ctx)->isReferenceType() ||
        Op->getCallReturnType(Ctx)->isVoidType())
      break;
    WarnE = this;
    Loc = Op->getOperatorLoc();
    R1 = Op->getSourceRange();
    return true;
  }

  // Fallthrough for generic call handling.
  LLVM_FALLTHROUGH[[clang::fallthrough]];
}
case CallExprClass:
case CXXMemberCallExprClass:
case UserDefinedLiteralClass: {
  // If this is a direct call, get the callee.
  const CallExpr *CE = cast<CallExpr>(this);
  if (const Decl *FD = CE->getCalleeDecl()) {
    // If the callee has attribute pure, const, or warn_unused_result, warn
    // about it. void foo() { strlen("bar"); } should warn.
    //
    // Note: If new cases are added here, DiagnoseUnusedExprResult should be
    // updated to match for QoI.
    if (CE->hasUnusedResultAttr(Ctx) ||
        FD->hasAttr<PureAttr>() || FD->hasAttr<ConstAttr>()) {
      WarnE = this;
      Loc = CE->getCallee()->getBeginLoc();
      R1 = CE->getCallee()->getSourceRange();

      if (unsigned NumArgs = CE->getNumArgs())
        R2 = SourceRange(CE->getArg(0)->getBeginLoc(),
                         CE->getArg(NumArgs - 1)->getEndLoc());
      return true;
    }
  }
  return false;
}

// If we don't know precisely what we're looking at, let's not warn.
case UnresolvedLookupExprClass:
case CXXUnresolvedConstructExprClass:
  return false;

case CXXTemporaryObjectExprClass:
case CXXConstructExprClass: {
  if (const CXXRecordDecl *Type = getType()->getAsCXXRecordDecl()) {
    if (Type->hasAttr<WarnUnusedAttr>()) {
      WarnE = this;
      Loc = getBeginLoc();
      R1 = getSourceRange();
      return true;
    }
  }
  return false;
}

case ObjCMessageExprClass: {
  const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(this);
  if (Ctx.getLangOpts().ObjCAutoRefCount &&
      ME->isInstanceMessage() &&
      !ME->getType()->isVoidType() &&
      ME->getMethodFamily() == OMF_init) {
    WarnE = this;
    Loc = getExprLoc();
    R1 = ME->getSourceRange();
    return true;
  }

  if (const ObjCMethodDecl *MD = ME->getMethodDecl())
    if (MD->hasAttr<WarnUnusedResultAttr>()) {
      WarnE = this;
      Loc = getExprLoc();
      return true;
    }

  return false;
}

case ObjCPropertyRefExprClass:
  WarnE = this;
  Loc = getExprLoc();
  R1 = getSourceRange();
  return true;

case PseudoObjectExprClass: {
  const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this);

  // Only complain about things that have the form of a getter.
  if (isa<UnaryOperator>(PO->getSyntacticForm()) ||
      isa<BinaryOperator>(PO->getSyntacticForm()))
    return false;

  WarnE = this;
  Loc = getExprLoc();
  R1 = getSourceRange();
  return true;
}

case StmtExprClass: {
  // Statement exprs don't logically have side effects themselves, but are
  // sometimes used in macros in ways that give them a type that is unused.
  // For example ({ blah; foo(); }) will end up with a type if foo has a type.
  // however, if the result of the stmt expr is dead, we don't want to emit a
  // warning.
  const CompoundStmt *CS = cast<StmtExpr>(this)->getSubStmt();
  if (!CS->body_empty()) {
    if (const Expr *E = dyn_cast<Expr>(CS->body_back()))
      return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
    if (const LabelStmt *Label = dyn_cast<LabelStmt>(CS->body_back()))
      if (const Expr *E = dyn_cast<Expr>(Label->getSubStmt()))
        return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
  }

  if (getType()->isVoidType())
    return false;
  WarnE = this;
  Loc = cast<StmtExpr>(this)->getLParenLoc();
  R1 = getSourceRange();
  return true;
}
case CXXFunctionalCastExprClass:
case CStyleCastExprClass: {
  // Ignore an explicit cast to void unless the operand is a non-trivial
  // volatile lvalue.
  const CastExpr *CE = cast<CastExpr>(this);
  if (CE->getCastKind() == CK_ToVoid) {
    if (CE->getSubExpr()->isGLValue() &&
        CE->getSubExpr()->getType().isVolatileQualified()) {
      const DeclRefExpr *DRE =
          dyn_cast<DeclRefExpr>(CE->getSubExpr()->IgnoreParens());
      if (!(DRE && isa<VarDecl>(DRE->getDecl()) &&
            cast<VarDecl>(DRE->getDecl())->hasLocalStorage()) &&
          !isa<CallExpr>(CE->getSubExpr()->IgnoreParens())) {
        return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc,
                                                        R1, R2, Ctx);
      }
    }
    return false;
  }

  // If this is a cast to a constructor conversion, check the operand.
  // Otherwise, the result of the cast is unused.
  if (CE->getCastKind() == CK_ConstructorConversion)
    return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);

  WarnE = this;
  if (const CXXFunctionalCastExpr *CXXCE =
          dyn_cast<CXXFunctionalCastExpr>(this)) {
    Loc = CXXCE->getBeginLoc();
    R1 = CXXCE->getSubExpr()->getSourceRange();
  } else {
    const CStyleCastExpr *CStyleCE = cast<CStyleCastExpr>(this);
    Loc = CStyleCE->getLParenLoc();
    R1 = CStyleCE->getSubExpr()->getSourceRange();
  }
  return true;
}
case ImplicitCastExprClass: {
  const CastExpr *ICE = cast<ImplicitCastExpr>(this);

  // lvalue-to-rvalue conversion on a volatile lvalue is a side-effect.
  if (ICE->getCastKind() == CK_LValueToRValue &&
      ICE->getSubExpr()->getType().isVolatileQualified())
    return false;

  return ICE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
}
case CXXDefaultArgExprClass:
  return (cast<CXXDefaultArgExpr>(this)
          ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx));
case CXXDefaultInitExprClass:
  return (cast<CXXDefaultInitExpr>(this)
          ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx));

case CXXNewExprClass:
  // FIXME: In theory, there might be new expressions that don't have side
  // effects (e.g. a placement new with an uninitialized POD).
case CXXDeleteExprClass:
  return false;
case MaterializeTemporaryExprClass:
  return cast<MaterializeTemporaryExpr>(this)->GetTemporaryExpr()
             ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
case CXXBindTemporaryExprClass:
  return cast<CXXBindTemporaryExpr>(this)->getSubExpr()
             ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
case ExprWithCleanupsClass:
  return cast<ExprWithCleanups>(this)->getSubExpr()
             ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx);
}
2576}

2578/// isOBJCGCCandidate - Check if an expression is objc gc'able.
2579/// returns true, if it is; false otherwise.
2580bool Expr::isOBJCGCCandidate(ASTContext &Ctx) const {
const Expr *E = IgnoreParens();
switch (E->getStmtClass()) {
default:
  return false;
case ObjCIvarRefExprClass:
  return true;
case Expr::UnaryOperatorClass:
  return cast<UnaryOperator>(E)->getSubExpr()->isOBJCGCCandidate(Ctx);
case ImplicitCastExprClass:
  return cast<ImplicitCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx);
case MaterializeTemporaryExprClass:
  return cast<MaterializeTemporaryExpr>(E)->GetTemporaryExpr()
                                                    ->isOBJCGCCandidate(Ctx);
case CStyleCastExprClass:
  return cast<CStyleCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx);
case DeclRefExprClass: {
  const Decl *D = cast<DeclRefExpr>(E)->getDecl();

  if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
    if (VD->hasGlobalStorage())
      return true;
    QualType T = VD->getType();
    // dereferencing to a  pointer is always a gc'able candidate,
    // unless it is __weak.
    return T->isPointerType() &&
           (Ctx.getObjCGCAttrKind(T) != Qualifiers::Weak);
  }
  return false;
}
case MemberExprClass: {
  const MemberExpr *M = cast<MemberExpr>(E);
  return M->getBase()->isOBJCGCCandidate(Ctx);
}
case ArraySubscriptExprClass:
  return cast<ArraySubscriptExpr>(E)->getBase()->isOBJCGCCandidate(Ctx);
}
2617}

2619bool Expr::isBoundMemberFunction(ASTContext &Ctx) const {
if (isTypeDependent())
  return false;
return ClassifyLValue(Ctx) == Expr::LV_MemberFunction;
2623}

2625QualType Expr::findBoundMemberType(const Expr *expr) {
assert(expr->hasPlaceholderType(BuiltinType::BoundMember))((expr->hasPlaceholderType(BuiltinType::BoundMember)) ? static_cast
<void> (0) : __assert_fail ("expr->hasPlaceholderType(BuiltinType::BoundMember)"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2626, __PRETTY_FUNCTION__));

// Bound member expressions are always one of these possibilities:
//   x->m      x.m      x->*y      x.*y
// (possibly parenthesized)

expr = expr->IgnoreParens();
if (const MemberExpr *mem = dyn_cast<MemberExpr>(expr)) {
  assert(isa<CXXMethodDecl>(mem->getMemberDecl()))((isa<CXXMethodDecl>(mem->getMemberDecl())) ? static_cast
<void> (0) : __assert_fail ("isa<CXXMethodDecl>(mem->getMemberDecl())"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2634, __PRETTY_FUNCTION__));
  return mem->getMemberDecl()->getType();
}

if (const BinaryOperator *op = dyn_cast<BinaryOperator>(expr)) {
  QualType type = op->getRHS()->getType()->castAs<MemberPointerType>()
                    ->getPointeeType();
  assert(type->isFunctionType())((type->isFunctionType()) ? static_cast<void> (0) : __assert_fail
 ("type->isFunctionType()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2641, __PRETTY_FUNCTION__));
  return type;
}

assert(isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr))((isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr
>(expr)) ? static_cast<void> (0) : __assert_fail ("isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr)"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2645, __PRETTY_FUNCTION__));
return QualType();
2647}

2649static Expr *IgnoreImpCastsSingleStep(Expr *E) {
if (auto *ICE = dyn_cast<ImplicitCastExpr>(E))
  return ICE->getSubExpr();

if (auto *FE = dyn_cast<FullExpr>(E))
  return FE->getSubExpr();

return E;
2657}

2659static Expr *IgnoreImpCastsExtraSingleStep(Expr *E) {
// FIXME: Skip MaterializeTemporaryExpr and SubstNonTypeTemplateParmExpr in
// addition to what IgnoreImpCasts() skips to account for the current
// behaviour of IgnoreParenImpCasts().
Expr *SubE = IgnoreImpCastsSingleStep(E);
if (SubE != E)
  return SubE;

if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E))
  return MTE->GetTemporaryExpr();

if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E))
  return NTTP->getReplacement();

return E;
2674}

2676static Expr *IgnoreCastsSingleStep(Expr *E) {
if (auto *CE = dyn_cast<CastExpr>(E))
  return CE->getSubExpr();

if (auto *FE = dyn_cast<FullExpr>(E))
  return FE->getSubExpr();

if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E))
  return MTE->GetTemporaryExpr();

if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E))
  return NTTP->getReplacement();

return E;
2690}

2692static Expr *IgnoreLValueCastsSingleStep(Expr *E) {
// Skip what IgnoreCastsSingleStep skips, except that only
// lvalue-to-rvalue casts are skipped.
if (auto *CE = dyn_cast<CastExpr>(E))
  if (CE->getCastKind() != CK_LValueToRValue)
    return E;

return IgnoreCastsSingleStep(E);
2700}

2702static Expr *IgnoreBaseCastsSingleStep(Expr *E) {
if (auto *CE = dyn_cast<CastExpr>(E))
  if (CE->getCastKind() == CK_DerivedToBase ||
      CE->getCastKind() == CK_UncheckedDerivedToBase ||
      CE->getCastKind() == CK_NoOp)
    return CE->getSubExpr();

return E;
2710}

2712static Expr *IgnoreImplicitSingleStep(Expr *E) {
Expr *SubE = IgnoreImpCastsSingleStep(E);
if (SubE != E)
  return SubE;

if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E))
  return MTE->GetTemporaryExpr();

if (auto *BTE = dyn_cast<CXXBindTemporaryExpr>(E))
  return BTE->getSubExpr();

return E;
2724}

2726static Expr *IgnoreParensSingleStep(Expr *E) {
if (auto *PE = dyn_cast<ParenExpr>(E))
  return PE->getSubExpr();

if (auto *UO = dyn_cast<UnaryOperator>(E)) {
  if (UO->getOpcode() == UO_Extension)
    return UO->getSubExpr();
}

else if (auto *GSE = dyn_cast<GenericSelectionExpr>(E)) {
  if (!GSE->isResultDependent())
    return GSE->getResultExpr();
}

else if (auto *CE = dyn_cast<ChooseExpr>(E)) {
  if (!CE->isConditionDependent())
    return CE->getChosenSubExpr();
}

else if (auto *CE = dyn_cast<ConstantExpr>(E))
  return CE->getSubExpr();

return E;
2749}

2751static Expr *IgnoreNoopCastsSingleStep(const ASTContext &Ctx, Expr *E) {
if (auto *CE = dyn_cast<CastExpr>(E)) {
  // We ignore integer <-> casts that are of the same width, ptr<->ptr and
  // ptr<->int casts of the same width. We also ignore all identity casts.
  Expr *SubExpr = CE->getSubExpr();
  bool IsIdentityCast =
      Ctx.hasSameUnqualifiedType(E->getType(), SubExpr->getType());
  bool IsSameWidthCast =
      (E->getType()->isPointerType() || E->getType()->isIntegralType(Ctx)) &&
      (SubExpr->getType()->isPointerType() ||
       SubExpr->getType()->isIntegralType(Ctx)) &&
      (Ctx.getTypeSize(E->getType()) == Ctx.getTypeSize(SubExpr->getType()));

  if (IsIdentityCast || IsSameWidthCast)
    return SubExpr;
}

else if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E))
  return NTTP->getReplacement();

return E;
2772}

2774static Expr *IgnoreExprNodesImpl(Expr *E) { return E; }
2775template <typename FnTy, typename... FnTys>
2776static Expr *IgnoreExprNodesImpl(Expr *E, FnTy &&Fn, FnTys &&... Fns) {
return IgnoreExprNodesImpl(Fn(E), std::forward<FnTys>(Fns)...);
2778}

2780/// Given an expression E and functions Fn_1,...,Fn_n : Expr * -> Expr *,
2781/// Recursively apply each of the functions to E until reaching a fixed point.
2782/// Note that a null E is valid; in this case nothing is done.
2783template <typename... FnTys>
2784static Expr *IgnoreExprNodes(Expr *E, FnTys &&... Fns) {
Expr *LastE = nullptr;
while (E != LastE) {
  LastE = E;
  E = IgnoreExprNodesImpl(E, std::forward<FnTys>(Fns)...);
}
return E;
2791}

2793Expr *Expr::IgnoreImpCasts() {
return IgnoreExprNodes(this, IgnoreImpCastsSingleStep);
2795}

2797Expr *Expr::IgnoreCasts() {
return IgnoreExprNodes(this, IgnoreCastsSingleStep);
2799}

2801Expr *Expr::IgnoreImplicit() {
return IgnoreExprNodes(this, IgnoreImplicitSingleStep);
2803}

2805Expr *Expr::IgnoreParens() {
return IgnoreExprNodes(this, IgnoreParensSingleStep);
2807}

2809Expr *Expr::IgnoreParenImpCasts() {
return IgnoreExprNodes(this, IgnoreParensSingleStep,
                       IgnoreImpCastsExtraSingleStep);
2812}

2814Expr *Expr::IgnoreParenCasts() {
return IgnoreExprNodes(this, IgnoreParensSingleStep, IgnoreCastsSingleStep);
2816}

2818Expr *Expr::IgnoreConversionOperator() {
if (auto *MCE = dyn_cast<CXXMemberCallExpr>(this)) {
  if (MCE->getMethodDecl() && isa<CXXConversionDecl>(MCE->getMethodDecl()))
    return MCE->getImplicitObjectArgument();
}
return this;
2824}

2826Expr *Expr::IgnoreParenLValueCasts() {
return IgnoreExprNodes(this, IgnoreParensSingleStep,
                       IgnoreLValueCastsSingleStep);
2829}

2831Expr *Expr::ignoreParenBaseCasts() {
return IgnoreExprNodes(this, IgnoreParensSingleStep,
                       IgnoreBaseCastsSingleStep);
2834}

2836Expr *Expr::IgnoreParenNoopCasts(const ASTContext &Ctx) {
return IgnoreExprNodes(this, IgnoreParensSingleStep, [&Ctx](Expr *E) {
  return IgnoreNoopCastsSingleStep(Ctx, E);
});
2840}

2842bool Expr::isDefaultArgument() const {
const Expr *E = this;
if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E))
  E = M->GetTemporaryExpr();

while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E))
  E = ICE->getSubExprAsWritten();

return isa<CXXDefaultArgExpr>(E);
2851}

2853/// Skip over any no-op casts and any temporary-binding
2854/// expressions.
2855static const Expr *skipTemporaryBindingsNoOpCastsAndParens(const Expr *E) {
if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E))
  E = M->GetTemporaryExpr();

while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
  if (ICE->getCastKind() == CK_NoOp)
    E = ICE->getSubExpr();
  else
    break;
}

while (const CXXBindTemporaryExpr *BE = dyn_cast<CXXBindTemporaryExpr>(E))
  E = BE->getSubExpr();

while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
  if (ICE->getCastKind() == CK_NoOp)
    E = ICE->getSubExpr();
  else
    break;
}

return E->IgnoreParens();
2877}

2879/// isTemporaryObject - Determines if this expression produces a
2880/// temporary of the given class type.
2881bool Expr::isTemporaryObject(ASTContext &C, const CXXRecordDecl *TempTy) const {
if (!C.hasSameUnqualifiedType(getType(), C.getTypeDeclType(TempTy)))
  return false;

const Expr *E = skipTemporaryBindingsNoOpCastsAndParens(this);

// Temporaries are by definition pr-values of class type.
if (!E->Classify(C).isPRValue()) {
  // In this context, property reference is a message call and is pr-value.
  if (!isa<ObjCPropertyRefExpr>(E))
    return false;
}

// Black-list a few cases which yield pr-values of class type that don't
// refer to temporaries of that type:

// - implicit derived-to-base conversions
if (isa<ImplicitCastExpr>(E)) {
  switch (cast<ImplicitCastExpr>(E)->getCastKind()) {
  case CK_DerivedToBase:
  case CK_UncheckedDerivedToBase:
    return false;
  default:
    break;
  }
}

// - member expressions (all)
if (isa<MemberExpr>(E))
  return false;

if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E))
  if (BO->isPtrMemOp())
    return false;

// - opaque values (all)
if (isa<OpaqueValueExpr>(E))
  return false;

return true;
2921}

2923bool Expr::isImplicitCXXThis() const {
const Expr *E = this;

// Strip away parentheses and casts we don't care about.
while (true) {
  if (const ParenExpr *Paren = dyn_cast<ParenExpr>(E)) {
    E = Paren->getSubExpr();
    continue;
  }

  if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
    if (ICE->getCastKind() == CK_NoOp ||
        ICE->getCastKind() == CK_LValueToRValue ||
        ICE->getCastKind() == CK_DerivedToBase ||
        ICE->getCastKind() == CK_UncheckedDerivedToBase) {
      E = ICE->getSubExpr();
      continue;
    }
  }

  if (const UnaryOperator* UnOp = dyn_cast<UnaryOperator>(E)) {
    if (UnOp->getOpcode() == UO_Extension) {
      E = UnOp->getSubExpr();
      continue;
    }
  }

  if (const MaterializeTemporaryExpr *M
                                    = dyn_cast<MaterializeTemporaryExpr>(E)) {
    E = M->GetTemporaryExpr();
    continue;
  }

  break;
}

if (const CXXThisExpr *This = dyn_cast<CXXThisExpr>(E))
  return This->isImplicit();

return false;
2963}

2965/// hasAnyTypeDependentArguments - Determines if any of the expressions
2966/// in Exprs is type-dependent.
2967bool Expr::hasAnyTypeDependentArguments(ArrayRef<Expr *> Exprs) {
for (unsigned I = 0; I < Exprs.size(); ++I)
  if (Exprs[I]->isTypeDependent())
    return true;

return false;
2973}

2975bool Expr::isConstantInitializer(ASTContext &Ctx, bool IsForRef,
                               const Expr **Culprit) const {
assert(!isValueDependent() &&((!isValueDependent() && "Expression evaluator can't be called on a dependent expression."
) ? static_cast<void> (0) : __assert_fail ("!isValueDependent() && \"Expression evaluator can't be called on a dependent expression.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2978, __PRETTY_FUNCTION__))
       "Expression evaluator can't be called on a dependent expression.")((!isValueDependent() && "Expression evaluator can't be called on a dependent expression."
) ? static_cast<void> (0) : __assert_fail ("!isValueDependent() && \"Expression evaluator can't be called on a dependent expression.\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 2978, __PRETTY_FUNCTION__));

// This function is attempting whether an expression is an initializer
// which can be evaluated at compile-time. It very closely parallels
// ConstExprEmitter in CGExprConstant.cpp; if they don't match, it
// will lead to unexpected results.  Like ConstExprEmitter, it falls back
// to isEvaluatable most of the time.
//
// If we ever capture reference-binding directly in the AST, we can
// kill the second parameter.

if (IsForRef) {
  EvalResult Result;
  if (EvaluateAsLValue(Result, Ctx) && !Result.HasSideEffects)
    return true;
  if (Culprit)
    *Culprit = this;
  return false;
}

switch (getStmtClass()) {
default: break;
case StringLiteralClass:
case ObjCEncodeExprClass:
  return true;
case CXXTemporaryObjectExprClass:
case CXXConstructExprClass: {
  const CXXConstructExpr *CE = cast<CXXConstructExpr>(this);

  if (CE->getConstructor()->isTrivial() &&
      CE->getConstructor()->getParent()->hasTrivialDestructor()) {
    // Trivial default constructor
    if (!CE->getNumArgs()) return true;

    // Trivial copy constructor
    assert(CE->getNumArgs() == 1 && "trivial ctor with > 1 argument")((CE->getNumArgs() == 1 && "trivial ctor with > 1 argument"
) ? static_cast<void> (0) : __assert_fail ("CE->getNumArgs() == 1 && \"trivial ctor with > 1 argument\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3013, __PRETTY_FUNCTION__));
    return CE->getArg(0)->isConstantInitializer(Ctx, false, Culprit);
  }

  break;
}
case ConstantExprClass: {
  // FIXME: We should be able to return "true" here, but it can lead to extra
  // error messages. E.g. in Sema/array-init.c.
  const Expr *Exp = cast<ConstantExpr>(this)->getSubExpr();
  return Exp->isConstantInitializer(Ctx, false, Culprit);
}
case CompoundLiteralExprClass: {
  // This handles gcc's extension that allows global initializers like
  // "struct x {int x;} x = (struct x) {};".
  // FIXME: This accepts other cases it shouldn't!
  const Expr *Exp = cast<CompoundLiteralExpr>(this)->getInitializer();
  return Exp->isConstantInitializer(Ctx, false, Culprit);
}
case DesignatedInitUpdateExprClass: {
  const DesignatedInitUpdateExpr *DIUE = cast<DesignatedInitUpdateExpr>(this);
  return DIUE->getBase()->isConstantInitializer(Ctx, false, Culprit) &&
         DIUE->getUpdater()->isConstantInitializer(Ctx, false, Culprit);
}
case InitListExprClass: {
  const InitListExpr *ILE = cast<InitListExpr>(this);
  assert(ILE->isSemanticForm() && "InitListExpr must be in semantic form")((ILE->isSemanticForm() && "InitListExpr must be in semantic form"
) ? static_cast<void> (0) : __assert_fail ("ILE->isSemanticForm() && \"InitListExpr must be in semantic form\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3039, __PRETTY_FUNCTION__));
  if (ILE->getType()->isArrayType()) {
    unsigned numInits = ILE->getNumInits();
    for (unsigned i = 0; i < numInits; i++) {
      if (!ILE->getInit(i)->isConstantInitializer(Ctx, false, Culprit))
        return false;
    }
    return true;
  }

  if (ILE->getType()->isRecordType()) {
    unsigned ElementNo = 0;
    RecordDecl *RD = ILE->getType()->getAs<RecordType>()->getDecl();
    for (const auto *Field : RD->fields()) {
      // If this is a union, skip all the fields that aren't being initialized.
      if (RD->isUnion() && ILE->getInitializedFieldInUnion() != Field)
        continue;

      // Don't emit anonymous bitfields, they just affect layout.
      if (Field->isUnnamedBitfield())
        continue;

      if (ElementNo < ILE->getNumInits()) {
        const Expr *Elt = ILE->getInit(ElementNo++);
        if (Field->isBitField()) {
          // Bitfields have to evaluate to an integer.
          EvalResult Result;
          if (!Elt->EvaluateAsInt(Result, Ctx)) {
            if (Culprit)
              *Culprit = Elt;
            return false;
          }
        } else {
          bool RefType = Field->getType()->isReferenceType();
          if (!Elt->isConstantInitializer(Ctx, RefType, Culprit))
            return false;
        }
      }
    }
    return true;
  }

  break;
}
case ImplicitValueInitExprClass:
case NoInitExprClass:
  return true;
case ParenExprClass:
  return cast<ParenExpr>(this)->getSubExpr()
    ->isConstantInitializer(Ctx, IsForRef, Culprit);
case GenericSelectionExprClass:
  return cast<GenericSelectionExpr>(this)->getResultExpr()
    ->isConstantInitializer(Ctx, IsForRef, Culprit);
case ChooseExprClass:
  if (cast<ChooseExpr>(this)->isConditionDependent()) {
    if (Culprit)
      *Culprit = this;
    return false;
  }
  return cast<ChooseExpr>(this)->getChosenSubExpr()
    ->isConstantInitializer(Ctx, IsForRef, Culprit);
case UnaryOperatorClass: {
  const UnaryOperator* Exp = cast<UnaryOperator>(this);
  if (Exp->getOpcode() == UO_Extension)
    return Exp->getSubExpr()->isConstantInitializer(Ctx, false, Culprit);
  break;
}
case CXXFunctionalCastExprClass:
case CXXStaticCastExprClass:
case ImplicitCastExprClass:
case CStyleCastExprClass:
case ObjCBridgedCastExprClass:
case CXXDynamicCastExprClass:
case CXXReinterpretCastExprClass:
case CXXConstCastExprClass: {
  const CastExpr *CE = cast<CastExpr>(this);

  // Handle misc casts we want to ignore.
  if (CE->getCastKind() == CK_NoOp ||
      CE->getCastKind() == CK_LValueToRValue ||
      CE->getCastKind() == CK_ToUnion ||
      CE->getCastKind() == CK_ConstructorConversion ||
      CE->getCastKind() == CK_NonAtomicToAtomic ||
      CE->getCastKind() == CK_AtomicToNonAtomic ||
      CE->getCastKind() == CK_IntToOCLSampler)
    return CE->getSubExpr()->isConstantInitializer(Ctx, false, Culprit);

  break;
}
case MaterializeTemporaryExprClass:
  return cast<MaterializeTemporaryExpr>(this)->GetTemporaryExpr()
    ->isConstantInitializer(Ctx, false, Culprit);

case SubstNonTypeTemplateParmExprClass:
  return cast<SubstNonTypeTemplateParmExpr>(this)->getReplacement()
    ->isConstantInitializer(Ctx, false, Culprit);
case CXXDefaultArgExprClass:
  return cast<CXXDefaultArgExpr>(this)->getExpr()
    ->isConstantInitializer(Ctx, false, Culprit);
case CXXDefaultInitExprClass:
  return cast<CXXDefaultInitExpr>(this)->getExpr()
    ->isConstantInitializer(Ctx, false, Culprit);
}
// Allow certain forms of UB in constant initializers: signed integer
// overflow and floating-point division by zero. We'll give a warning on
// these, but they're common enough that we have to accept them.
if (isEvaluatable(Ctx, SE_AllowUndefinedBehavior))
  return true;
if (Culprit)
  *Culprit = this;
return false;
3150}

3152bool CallExpr::isBuiltinAssumeFalse(const ASTContext &Ctx) const {
const FunctionDecl* FD = getDirectCallee();
if (!FD || (FD->getBuiltinID() != Builtin::BI__assume &&
            FD->getBuiltinID() != Builtin::BI__builtin_assume))
  return false;

const Expr* Arg = getArg(0);
bool ArgVal;
return !Arg->isValueDependent() &&
       Arg->EvaluateAsBooleanCondition(ArgVal, Ctx) && !ArgVal;
3162}

3164namespace {
/// Look for any side effects within a Stmt.
class SideEffectFinder : public ConstEvaluatedExprVisitor<SideEffectFinder> {
  typedef ConstEvaluatedExprVisitor<SideEffectFinder> Inherited;
  const bool IncludePossibleEffects;
  bool HasSideEffects;

public:
  explicit SideEffectFinder(const ASTContext &Context, bool IncludePossible)
    : Inherited(Context),
      IncludePossibleEffects(IncludePossible), HasSideEffects(false) { }

  bool hasSideEffects() const { return HasSideEffects; }

  void VisitExpr(const Expr *E) {
    if (!HasSideEffects &&
        E->HasSideEffects(Context, IncludePossibleEffects))
      HasSideEffects = true;
  }
};
3184}

3186bool Expr::HasSideEffects(const ASTContext &Ctx,
                        bool IncludePossibleEffects) const {
// In circumstances where we care about definite side effects instead of
// potential side effects, we want to ignore expressions that are part of a
// macro expansion as a potential side effect.
if (!IncludePossibleEffects && getExprLoc().isMacroID())
  return false;

if (isInstantiationDependent())
  return IncludePossibleEffects;

switch (getStmtClass()) {
case NoStmtClass:
#define ABSTRACT_STMT(Type)
#define STMT(Type, Base) case Type##Class:
#define EXPR(Type, Base)
#include "clang/AST/StmtNodes.inc"
  llvm_unreachable("unexpected Expr kind")::llvm::llvm_unreachable_internal("unexpected Expr kind", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3203);

case DependentScopeDeclRefExprClass:
case CXXUnresolvedConstructExprClass:
case CXXDependentScopeMemberExprClass:
case UnresolvedLookupExprClass:
case UnresolvedMemberExprClass:
case PackExpansionExprClass:
case SubstNonTypeTemplateParmPackExprClass:
case FunctionParmPackExprClass:
case TypoExprClass:
case CXXFoldExprClass:
  llvm_unreachable("shouldn't see dependent / unresolved nodes here")::llvm::llvm_unreachable_internal("shouldn't see dependent / unresolved nodes here"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3215);

case DeclRefExprClass:
case ObjCIvarRefExprClass:
case PredefinedExprClass:
case IntegerLiteralClass:
case FixedPointLiteralClass:
case FloatingLiteralClass:
case ImaginaryLiteralClass:
case StringLiteralClass:
case CharacterLiteralClass:
case OffsetOfExprClass:
case ImplicitValueInitExprClass:
case UnaryExprOrTypeTraitExprClass:
case AddrLabelExprClass:
case GNUNullExprClass:
case ArrayInitIndexExprClass:
case NoInitExprClass:
case CXXBoolLiteralExprClass:
case CXXNullPtrLiteralExprClass:
case CXXThisExprClass:
case CXXScalarValueInitExprClass:
case TypeTraitExprClass:
case ArrayTypeTraitExprClass:
case ExpressionTraitExprClass:
case CXXNoexceptExprClass:
case SizeOfPackExprClass:
case ObjCStringLiteralClass:
case ObjCEncodeExprClass:
case ObjCBoolLiteralExprClass:
case ObjCAvailabilityCheckExprClass:
case CXXUuidofExprClass:
case OpaqueValueExprClass:
case SourceLocExprClass:
  // These never have a side-effect.
  return false;

case ConstantExprClass:
  // FIXME: Move this into the "return false;" block above.
  return cast<ConstantExpr>(this)->getSubExpr()->HasSideEffects(
      Ctx, IncludePossibleEffects);

case CallExprClass:
case CXXOperatorCallExprClass:
case CXXMemberCallExprClass:
case CUDAKernelCallExprClass:
case UserDefinedLiteralClass: {
  // We don't know a call definitely has side effects, except for calls
  // to pure/const functions that definitely don't.
  // If the call itself is considered side-effect free, check the operands.
  const Decl *FD = cast<CallExpr>(this)->getCalleeDecl();
  bool IsPure = FD && (FD->hasAttr<ConstAttr>() || FD->hasAttr<PureAttr>());
  if (IsPure || !IncludePossibleEffects)
    break;
  return true;
}

case BlockExprClass:
case CXXBindTemporaryExprClass:
  if (!IncludePossibleEffects)
    break;
  return true;

case MSPropertyRefExprClass:
case MSPropertySubscriptExprClass:
case CompoundAssignOperatorClass:
case VAArgExprClass:
case AtomicExprClass:
case CXXThrowExprClass:
case CXXNewExprClass:
case CXXDeleteExprClass:
case CoawaitExprClass:
case DependentCoawaitExprClass:
case CoyieldExprClass:
  // These always have a side-effect.
  return true;

case StmtExprClass: {
  // StmtExprs have a side-effect if any substatement does.
  SideEffectFinder Finder(Ctx, IncludePossibleEffects);
  Finder.Visit(cast<StmtExpr>(this)->getSubStmt());
  return Finder.hasSideEffects();
}

case ExprWithCleanupsClass:
  if (IncludePossibleEffects)
    if (cast<ExprWithCleanups>(this)->cleanupsHaveSideEffects())
      return true;
  break;

case ParenExprClass:
case ArraySubscriptExprClass:
case OMPArraySectionExprClass:
case MemberExprClass:
case ConditionalOperatorClass:
case BinaryConditionalOperatorClass:
case CompoundLiteralExprClass:
case ExtVectorElementExprClass:
case DesignatedInitExprClass:
case DesignatedInitUpdateExprClass:
case ArrayInitLoopExprClass:
case ParenListExprClass:
case CXXPseudoDestructorExprClass:
case CXXStdInitializerListExprClass:
case SubstNonTypeTemplateParmExprClass:
case MaterializeTemporaryExprClass:
case ShuffleVectorExprClass:
case ConvertVectorExprClass:
case AsTypeExprClass:
  // These have a side-effect if any subexpression does.
  break;

case UnaryOperatorClass:
  if (cast<UnaryOperator>(this)->isIncrementDecrementOp())
    return true;
  break;

case BinaryOperatorClass:
  if (cast<BinaryOperator>(this)->isAssignmentOp())
    return true;
  break;

case InitListExprClass:
  // FIXME: The children for an InitListExpr doesn't include the array filler.
  if (const Expr *E = cast<InitListExpr>(this)->getArrayFiller())
    if (E->HasSideEffects(Ctx, IncludePossibleEffects))
      return true;
  break;

case GenericSelectionExprClass:
  return cast<GenericSelectionExpr>(this)->getResultExpr()->
      HasSideEffects(Ctx, IncludePossibleEffects);

case ChooseExprClass:
  return cast<ChooseExpr>(this)->getChosenSubExpr()->HasSideEffects(
      Ctx, IncludePossibleEffects);

case CXXDefaultArgExprClass:
  return cast<CXXDefaultArgExpr>(this)->getExpr()->HasSideEffects(
      Ctx, IncludePossibleEffects);

case CXXDefaultInitExprClass: {
  const FieldDecl *FD = cast<CXXDefaultInitExpr>(this)->getField();
  if (const Expr *E = FD->getInClassInitializer())
    return E->HasSideEffects(Ctx, IncludePossibleEffects);
  // If we've not yet parsed the initializer, assume it has side-effects.
  return true;
}

case CXXDynamicCastExprClass: {
  // A dynamic_cast expression has side-effects if it can throw.
  const CXXDynamicCastExpr *DCE = cast<CXXDynamicCastExpr>(this);
  if (DCE->getTypeAsWritten()->isReferenceType() &&
      DCE->getCastKind() == CK_Dynamic)
    return true;
  }
  LLVM_FALLTHROUGH[[clang::fallthrough]];
case ImplicitCastExprClass:
case CStyleCastExprClass:
case CXXStaticCastExprClass:
case CXXReinterpretCastExprClass:
case CXXConstCastExprClass:
case CXXFunctionalCastExprClass: {
  // While volatile reads are side-effecting in both C and C++, we treat them
  // as having possible (not definite) side-effects. This allows idiomatic
  // code to behave without warning, such as sizeof(*v) for a volatile-
  // qualified pointer.
  if (!IncludePossibleEffects)
    break;

  const CastExpr *CE = cast<CastExpr>(this);
  if (CE->getCastKind() == CK_LValueToRValue &&
      CE->getSubExpr()->getType().isVolatileQualified())
    return true;
  break;
}

case CXXTypeidExprClass:
  // typeid might throw if its subexpression is potentially-evaluated, so has
  // side-effects in that case whether or not its subexpression does.
  return cast<CXXTypeidExpr>(this)->isPotentiallyEvaluated();

case CXXConstructExprClass:
case CXXTemporaryObjectExprClass: {
  const CXXConstructExpr *CE = cast<CXXConstructExpr>(this);
  if (!CE->getConstructor()->isTrivial() && IncludePossibleEffects)
    return true;
  // A trivial constructor does not add any side-effects of its own. Just look
  // at its arguments.
  break;
}

case CXXInheritedCtorInitExprClass: {
  const auto *ICIE = cast<CXXInheritedCtorInitExpr>(this);
  if (!ICIE->getConstructor()->isTrivial() && IncludePossibleEffects)
    return true;
  break;
}

case LambdaExprClass: {
  const LambdaExpr *LE = cast<LambdaExpr>(this);
  for (Expr *E : LE->capture_inits())
    if (E->HasSideEffects(Ctx, IncludePossibleEffects))
      return true;
  return false;
}

case PseudoObjectExprClass: {
  // Only look for side-effects in the semantic form, and look past
  // OpaqueValueExpr bindings in that form.
  const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this);
  for (PseudoObjectExpr::const_semantics_iterator I = PO->semantics_begin(),
                                                  E = PO->semantics_end();
       I != E; ++I) {
    const Expr *Subexpr = *I;
    if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(Subexpr))
      Subexpr = OVE->getSourceExpr();
    if (Subexpr->HasSideEffects(Ctx, IncludePossibleEffects))
      return true;
  }
  return false;
}

case ObjCBoxedExprClass:
case ObjCArrayLiteralClass:
case ObjCDictionaryLiteralClass:
case ObjCSelectorExprClass:
case ObjCProtocolExprClass:
case ObjCIsaExprClass:
case ObjCIndirectCopyRestoreExprClass:
case ObjCSubscriptRefExprClass:
case ObjCBridgedCastExprClass:
case ObjCMessageExprClass:
case ObjCPropertyRefExprClass:
// FIXME: Classify these cases better.
  if (IncludePossibleEffects)
    return true;
  break;
}

// Recurse to children.
for (const Stmt *SubStmt : children())
  if (SubStmt &&
      cast<Expr>(SubStmt)->HasSideEffects(Ctx, IncludePossibleEffects))
    return true;

return false;
3462}

3464namespace {
/// Look for a call to a non-trivial function within an expression.
class NonTrivialCallFinder : public ConstEvaluatedExprVisitor<NonTrivialCallFinder>
{
  typedef ConstEvaluatedExprVisitor<NonTrivialCallFinder> Inherited;

  bool NonTrivial;

public:
  explicit NonTrivialCallFinder(const ASTContext &Context)
    : Inherited(Context), NonTrivial(false) { }

  bool hasNonTrivialCall() const { return NonTrivial; }

  void VisitCallExpr(const CallExpr *E) {
    if (const CXXMethodDecl *Method
        = dyn_cast_or_null<const CXXMethodDecl>(E->getCalleeDecl())) {
      if (Method->isTrivial()) {
        // Recurse to children of the call.
        Inherited::VisitStmt(E);
        return;
      }
    }

    NonTrivial = true;
  }

  void VisitCXXConstructExpr(const CXXConstructExpr *E) {
    if (E->getConstructor()->isTrivial()) {
      // Recurse to children of the call.
      Inherited::VisitStmt(E);
      return;
    }

    NonTrivial = true;
  }

  void VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *E) {
    if (E->getTemporary()->getDestructor()->isTrivial()) {
      Inherited::VisitStmt(E);
      return;
    }

    NonTrivial = true;
  }
};
3510}

3512bool Expr::hasNonTrivialCall(const ASTContext &Ctx) const {
NonTrivialCallFinder Finder(Ctx);
Finder.Visit(this);
return Finder.hasNonTrivialCall();
3516}

3518/// isNullPointerConstant - C99 6.3.2.3p3 - Return whether this is a null
3519/// pointer constant or not, as well as the specific kind of constant detected.
3520/// Null pointer constants can be integer constant expressions with the
3521/// value zero, casts of zero to void*, nullptr (C++0X), or __null
3522/// (a GNU extension).
3523Expr::NullPointerConstantKind
3524Expr::isNullPointerConstant(ASTContext &Ctx,
                          NullPointerConstantValueDependence NPC) const {
if (isValueDependent() &&
    (!Ctx.getLangOpts().CPlusPlus11 || Ctx.getLangOpts().MSVCCompat)) {
  switch (NPC) {
  case NPC_NeverValueDependent:
    llvm_unreachable("Unexpected value dependent expression!")::llvm::llvm_unreachable_internal("Unexpected value dependent expression!"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3530);
  case NPC_ValueDependentIsNull:
    if (isTypeDependent() || getType()->isIntegralType(Ctx))
      return NPCK_ZeroExpression;
    else
      return NPCK_NotNull;

  case NPC_ValueDependentIsNotNull:
    return NPCK_NotNull;
  }
}

// Strip off a cast to void*, if it exists. Except in C++.
if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) {
  if (!Ctx.getLangOpts().CPlusPlus) {
    // Check that it is a cast to void*.
    if (const PointerType *PT = CE->getType()->getAs<PointerType>()) {
      QualType Pointee = PT->getPointeeType();
      Qualifiers Qs = Pointee.getQualifiers();
      // Only (void*)0 or equivalent are treated as nullptr. If pointee type
      // has non-default address space it is not treated as nullptr.
      // (__generic void*)0 in OpenCL 2.0 should not be treated as nullptr
      // since it cannot be assigned to a pointer to constant address space.
      if ((Ctx.getLangOpts().OpenCLVersion >= 200 &&
           Pointee.getAddressSpace() == LangAS::opencl_generic) ||
          (Ctx.getLangOpts().OpenCL &&
           Ctx.getLangOpts().OpenCLVersion < 200 &&
           Pointee.getAddressSpace() == LangAS::opencl_private))
        Qs.removeAddressSpace();

      if (Pointee->isVoidType() && Qs.empty() && // to void*
          CE->getSubExpr()->getType()->isIntegerType()) // from int
        return CE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
    }
  }
} else if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(this)) {
  // Ignore the ImplicitCastExpr type entirely.
  return ICE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
} else if (const ParenExpr *PE = dyn_cast<ParenExpr>(this)) {
  // Accept ((void*)0) as a null pointer constant, as many other
  // implementations do.
  return PE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
} else if (const GenericSelectionExpr *GE =
             dyn_cast<GenericSelectionExpr>(this)) {
  if (GE->isResultDependent())
    return NPCK_NotNull;
  return GE->getResultExpr()->isNullPointerConstant(Ctx, NPC);
} else if (const ChooseExpr *CE = dyn_cast<ChooseExpr>(this)) {
  if (CE->isConditionDependent())
    return NPCK_NotNull;
  return CE->getChosenSubExpr()->isNullPointerConstant(Ctx, NPC);
} else if (const CXXDefaultArgExpr *DefaultArg
             = dyn_cast<CXXDefaultArgExpr>(this)) {
  // See through default argument expressions.
  return DefaultArg->getExpr()->isNullPointerConstant(Ctx, NPC);
} else if (const CXXDefaultInitExpr *DefaultInit
             = dyn_cast<CXXDefaultInitExpr>(this)) {
  // See through default initializer expressions.
  return DefaultInit->getExpr()->isNullPointerConstant(Ctx, NPC);
} else if (isa<GNUNullExpr>(this)) {
  // The GNU __null extension is always a null pointer constant.
  return NPCK_GNUNull;
} else if (const MaterializeTemporaryExpr *M
                                 = dyn_cast<MaterializeTemporaryExpr>(this)) {
  return M->GetTemporaryExpr()->isNullPointerConstant(Ctx, NPC);
} else if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(this)) {
  if (const Expr *Source = OVE->getSourceExpr())
    return Source->isNullPointerConstant(Ctx, NPC);
}

// C++11 nullptr_t is always a null pointer constant.
if (getType()->isNullPtrType())
  return NPCK_CXX11_nullptr;

if (const RecordType *UT = getType()->getAsUnionType())
  if (!Ctx.getLangOpts().CPlusPlus11 &&
      UT && UT->getDecl()->hasAttr<TransparentUnionAttr>())
    if (const CompoundLiteralExpr *CLE = dyn_cast<CompoundLiteralExpr>(this)){
      const Expr *InitExpr = CLE->getInitializer();
      if (const InitListExpr *ILE = dyn_cast<InitListExpr>(InitExpr))
        return ILE->getInit(0)->isNullPointerConstant(Ctx, NPC);
    }
// This expression must be an integer type.
if (!getType()->isIntegerType() ||
    (Ctx.getLangOpts().CPlusPlus && getType()->isEnumeralType()))
  return NPCK_NotNull;

if (Ctx.getLangOpts().CPlusPlus11) {
  // C++11 [conv.ptr]p1: A null pointer constant is an integer literal with
  // value zero or a prvalue of type std::nullptr_t.
  // Microsoft mode permits C++98 rules reflecting MSVC behavior.
  const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(this);
  if (Lit && !Lit->getValue())
    return NPCK_ZeroLiteral;
  else if (!Ctx.getLangOpts().MSVCCompat || !isCXX98IntegralConstantExpr(Ctx))
    return NPCK_NotNull;
} else {
  // If we have an integer constant expression, we need to *evaluate* it and
  // test for the value 0.
  if (!isIntegerConstantExpr(Ctx))
    return NPCK_NotNull;
}

if (EvaluateKnownConstInt(Ctx) != 0)
  return NPCK_NotNull;

if (isa<IntegerLiteral>(this))
  return NPCK_ZeroLiteral;
return NPCK_ZeroExpression;
3639}

3641/// If this expression is an l-value for an Objective C
3642/// property, find the underlying property reference expression.
3643const ObjCPropertyRefExpr *Expr::getObjCProperty() const {
const Expr *E = this;
while (true) {
  assert((E->getValueKind() == VK_LValue &&(((E->getValueKind() == VK_LValue && E->getObjectKind
() == OK_ObjCProperty) && "expression is not a property reference"
) ? static_cast<void> (0) : __assert_fail ("(E->getValueKind() == VK_LValue && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3648, __PRETTY_FUNCTION__))
          E->getObjectKind() == OK_ObjCProperty) &&(((E->getValueKind() == VK_LValue && E->getObjectKind
() == OK_ObjCProperty) && "expression is not a property reference"
) ? static_cast<void> (0) : __assert_fail ("(E->getValueKind() == VK_LValue && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3648, __PRETTY_FUNCTION__))
         "expression is not a property reference")(((E->getValueKind() == VK_LValue && E->getObjectKind
() == OK_ObjCProperty) && "expression is not a property reference"
) ? static_cast<void> (0) : __assert_fail ("(E->getValueKind() == VK_LValue && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3648, __PRETTY_FUNCTION__));
  E = E->IgnoreParenCasts();
  if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
    if (BO->getOpcode() == BO_Comma) {
      E = BO->getRHS();
      continue;
    }
  }

  break;
}

return cast<ObjCPropertyRefExpr>(E);
3661}

3663bool Expr::isObjCSelfExpr() const {
const Expr *E = IgnoreParenImpCasts();

const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E);
if (!DRE)
  return false;

const ImplicitParamDecl *Param = dyn_cast<ImplicitParamDecl>(DRE->getDecl());
if (!Param)
  return false;

const ObjCMethodDecl *M = dyn_cast<ObjCMethodDecl>(Param->getDeclContext());
if (!M)
  return false;

return M->getSelfDecl() == Param;
3679}

3681FieldDecl *Expr::getSourceBitField() {
Expr *E = this->IgnoreParens();

while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
  if (ICE->getCastKind() == CK_LValueToRValue ||
      (ICE->getValueKind() != VK_RValue && ICE->getCastKind() == CK_NoOp))
    E = ICE->getSubExpr()->IgnoreParens();
  else
    break;
}

if (MemberExpr *MemRef = dyn_cast<MemberExpr>(E))
  if (FieldDecl *Field = dyn_cast<FieldDecl>(MemRef->getMemberDecl()))
    if (Field->isBitField())
      return Field;

if (ObjCIvarRefExpr *IvarRef = dyn_cast<ObjCIvarRefExpr>(E)) {
  FieldDecl *Ivar = IvarRef->getDecl();
  if (Ivar->isBitField())
    return Ivar;
}

if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E)) {
  if (FieldDecl *Field = dyn_cast<FieldDecl>(DeclRef->getDecl()))
    if (Field->isBitField())
      return Field;

  if (BindingDecl *BD = dyn_cast<BindingDecl>(DeclRef->getDecl()))
    if (Expr *E = BD->getBinding())
      return E->getSourceBitField();
}

if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(E)) {
  if (BinOp->isAssignmentOp() && BinOp->getLHS())
    return BinOp->getLHS()->getSourceBitField();

  if (BinOp->getOpcode() == BO_Comma && BinOp->getRHS())
    return BinOp->getRHS()->getSourceBitField();
}

if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(E))
  if (UnOp->isPrefix() && UnOp->isIncrementDecrementOp())
    return UnOp->getSubExpr()->getSourceBitField();

return nullptr;
3726}

3728bool Expr::refersToVectorElement() const {
// FIXME: Why do we not just look at the ObjectKind here?
const Expr *E = this->IgnoreParens();

while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) {
  if (ICE->getValueKind() != VK_RValue &&
      ICE->getCastKind() == CK_NoOp)
    E = ICE->getSubExpr()->IgnoreParens();
  else
    break;
}

if (const ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E))
  return ASE->getBase()->getType()->isVectorType();

if (isa<ExtVectorElementExpr>(E))
  return true;

if (auto *DRE = dyn_cast<DeclRefExpr>(E))
  if (auto *BD = dyn_cast<BindingDecl>(DRE->getDecl()))
    if (auto *E = BD->getBinding())
      return E->refersToVectorElement();

return false;
3752}

3754bool Expr::refersToGlobalRegisterVar() const {
const Expr *E = this->IgnoreParenImpCasts();

if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E))
  if (const auto *VD = dyn_cast<VarDecl>(DRE->getDecl()))
    if (VD->getStorageClass() == SC_Register &&
        VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl())
      return true;

return false;
3764}

3766/// isArrow - Return true if the base expression is a pointer to vector,
3767/// return false if the base expression is a vector.
3768bool ExtVectorElementExpr::isArrow() const {
return getBase()->getType()->isPointerType();
3770}

3772unsigned ExtVectorElementExpr::getNumElements() const {
if (const VectorType *VT = getType()->getAs<VectorType>())
  return VT->getNumElements();
return 1;
3776}

3778/// containsDuplicateElements - Return true if any element access is repeated.
3779bool ExtVectorElementExpr::containsDuplicateElements() const {
// FIXME: Refactor this code to an accessor on the AST node which returns the
// "type" of component access, and share with code below and in Sema.
StringRef Comp = Accessor->getName();

// Halving swizzles do not contain duplicate elements.
if (Comp == "hi" || Comp == "lo" || Comp == "even" || Comp == "odd")
  return false;

// Advance past s-char prefix on hex swizzles.
if (Comp[0] == 's' || Comp[0] == 'S')
  Comp = Comp.substr(1);

for (unsigned i = 0, e = Comp.size(); i != e; ++i)
  if (Comp.substr(i + 1).find(Comp[i]) != StringRef::npos)
      return true;

return false;
3797}

3799/// getEncodedElementAccess - We encode the fields as a llvm ConstantArray.
3800void ExtVectorElementExpr::getEncodedElementAccess(
  SmallVectorImpl<uint32_t> &Elts) const {
StringRef Comp = Accessor->getName();
bool isNumericAccessor = false;
if (Comp[0] == 's' || Comp[0] == 'S') {
  Comp = Comp.substr(1);
  isNumericAccessor = true;
}

bool isHi =   Comp == "hi";
bool isLo =   Comp == "lo";
bool isEven = Comp == "even";
bool isOdd  = Comp == "odd";

for (unsigned i = 0, e = getNumElements(); i != e; ++i) {
  uint64_t Index;

  if (isHi)
    Index = e + i;
  else if (isLo)
    Index = i;
  else if (isEven)
    Index = 2 * i;
  else if (isOdd)
    Index = 2 * i + 1;
  else
    Index = ExtVectorType::getAccessorIdx(Comp[i], isNumericAccessor);

  Elts.push_back(Index);
}
3830}

3832ShuffleVectorExpr::ShuffleVectorExpr(const ASTContext &C, ArrayRef<Expr*> args,
                                   QualType Type, SourceLocation BLoc,
                                   SourceLocation RP)
 : Expr(ShuffleVectorExprClass, Type, VK_RValue, OK_Ordinary,
        Type->isDependentType(), Type->isDependentType(),
        Type->isInstantiationDependentType(),
        Type->containsUnexpandedParameterPack()),
   BuiltinLoc(BLoc), RParenLoc(RP), NumExprs(args.size())
3840{
SubExprs = new (C) Stmt*[args.size()];
for (unsigned i = 0; i != args.size(); i++) {
  if (args[i]->isTypeDependent())
    ExprBits.TypeDependent = true;
  if (args[i]->isValueDependent())
    ExprBits.ValueDependent = true;
  if (args[i]->isInstantiationDependent())
    ExprBits.InstantiationDependent = true;
  if (args[i]->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;

  SubExprs[i] = args[i];
}
3854}

3856void ShuffleVectorExpr::setExprs(const ASTContext &C, ArrayRef<Expr *> Exprs) {
if (SubExprs) C.Deallocate(SubExprs);
1
Assuming the condition is false→
2
←
Taking false branch→

this->NumExprs = Exprs.size();
SubExprs = new (C) Stmt*[NumExprs];
3
←
Null pointer value stored to field 'SubExprs'→
memcpy(SubExprs, Exprs.data(), sizeof(Expr *) * Exprs.size());
4
←
Null pointer passed as an argument to a 'nonnull' parameter
3862}

3864GenericSelectionExpr::GenericSelectionExpr(
  const ASTContext &, SourceLocation GenericLoc, Expr *ControllingExpr,
  ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
  SourceLocation DefaultLoc, SourceLocation RParenLoc,
  bool ContainsUnexpandedParameterPack, unsigned ResultIndex)
  : Expr(GenericSelectionExprClass, AssocExprs[ResultIndex]->getType(),
         AssocExprs[ResultIndex]->getValueKind(),
         AssocExprs[ResultIndex]->getObjectKind(),
         AssocExprs[ResultIndex]->isTypeDependent(),
         AssocExprs[ResultIndex]->isValueDependent(),
         AssocExprs[ResultIndex]->isInstantiationDependent(),
         ContainsUnexpandedParameterPack),
    NumAssocs(AssocExprs.size()), ResultIndex(ResultIndex),
    DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) {
assert(AssocTypes.size() == AssocExprs.size() &&((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions"
 " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail
 ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3880, __PRETTY_FUNCTION__))
       "Must have the same number of association expressions"((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions"
 " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail
 ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3880, __PRETTY_FUNCTION__))
       " and TypeSourceInfo!")((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions"
 " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail
 ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3880, __PRETTY_FUNCTION__));
assert(ResultIndex < NumAssocs && "ResultIndex is out-of-bounds!")((ResultIndex < NumAssocs && "ResultIndex is out-of-bounds!"
) ? static_cast<void> (0) : __assert_fail ("ResultIndex < NumAssocs && \"ResultIndex is out-of-bounds!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3881, __PRETTY_FUNCTION__));

GenericSelectionExprBits.GenericLoc = GenericLoc;
getTrailingObjects<Stmt *>()[ControllingIndex] = ControllingExpr;
std::copy(AssocExprs.begin(), AssocExprs.end(),
          getTrailingObjects<Stmt *>() + AssocExprStartIndex);
std::copy(AssocTypes.begin(), AssocTypes.end(),
          getTrailingObjects<TypeSourceInfo *>());
3889}

3891GenericSelectionExpr::GenericSelectionExpr(
  const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr,
  ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
  SourceLocation DefaultLoc, SourceLocation RParenLoc,
  bool ContainsUnexpandedParameterPack)
  : Expr(GenericSelectionExprClass, Context.DependentTy, VK_RValue,
         OK_Ordinary,
         /*isTypeDependent=*/true,
         /*isValueDependent=*/true,
         /*isInstantiationDependent=*/true, ContainsUnexpandedParameterPack),
    NumAssocs(AssocExprs.size()), ResultIndex(ResultDependentIndex),
    DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) {
assert(AssocTypes.size() == AssocExprs.size() &&((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions"
 " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail
 ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3905, __PRETTY_FUNCTION__))
       "Must have the same number of association expressions"((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions"
 " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail
 ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3905, __PRETTY_FUNCTION__))
       " and TypeSourceInfo!")((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions"
 " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail
 ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3905, __PRETTY_FUNCTION__));

GenericSelectionExprBits.GenericLoc = GenericLoc;
getTrailingObjects<Stmt *>()[ControllingIndex] = ControllingExpr;
std::copy(AssocExprs.begin(), AssocExprs.end(),
          getTrailingObjects<Stmt *>() + AssocExprStartIndex);
std::copy(AssocTypes.begin(), AssocTypes.end(),
          getTrailingObjects<TypeSourceInfo *>());
3913}

3915GenericSelectionExpr::GenericSelectionExpr(EmptyShell Empty, unsigned NumAssocs)
  : Expr(GenericSelectionExprClass, Empty), NumAssocs(NumAssocs) {}

3918GenericSelectionExpr *GenericSelectionExpr::Create(
  const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr,
  ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
  SourceLocation DefaultLoc, SourceLocation RParenLoc,
  bool ContainsUnexpandedParameterPack, unsigned ResultIndex) {
unsigned NumAssocs = AssocExprs.size();
void *Mem = Context.Allocate(
    totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs),
    alignof(GenericSelectionExpr));
return new (Mem) GenericSelectionExpr(
    Context, GenericLoc, ControllingExpr, AssocTypes, AssocExprs, DefaultLoc,
    RParenLoc, ContainsUnexpandedParameterPack, ResultIndex);
3930}

3932GenericSelectionExpr *GenericSelectionExpr::Create(
  const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr,
  ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
  SourceLocation DefaultLoc, SourceLocation RParenLoc,
  bool ContainsUnexpandedParameterPack) {
unsigned NumAssocs = AssocExprs.size();
void *Mem = Context.Allocate(
    totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs),
    alignof(GenericSelectionExpr));
return new (Mem) GenericSelectionExpr(
    Context, GenericLoc, ControllingExpr, AssocTypes, AssocExprs, DefaultLoc,
    RParenLoc, ContainsUnexpandedParameterPack);
3944}

3946GenericSelectionExpr *
3947GenericSelectionExpr::CreateEmpty(const ASTContext &Context,
                                unsigned NumAssocs) {
void *Mem = Context.Allocate(
    totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs),
    alignof(GenericSelectionExpr));
return new (Mem) GenericSelectionExpr(EmptyShell(), NumAssocs);
3953}

3955//===----------------------------------------------------------------------===//
3956//  DesignatedInitExpr
3957//===----------------------------------------------------------------------===//

3959IdentifierInfo *DesignatedInitExpr::Designator::getFieldName() const {
assert(Kind == FieldDesignator && "Only valid on a field designator")((Kind == FieldDesignator && "Only valid on a field designator"
) ? static_cast<void> (0) : __assert_fail ("Kind == FieldDesignator && \"Only valid on a field designator\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 3960, __PRETTY_FUNCTION__));
if (Field.NameOrField & 0x01)
  return reinterpret_cast<IdentifierInfo *>(Field.NameOrField&~0x01);
else
  return getField()->getIdentifier();
3965}

3967DesignatedInitExpr::DesignatedInitExpr(const ASTContext &C, QualType Ty,
                                     llvm::ArrayRef<Designator> Designators,
                                     SourceLocation EqualOrColonLoc,
                                     bool GNUSyntax,
                                     ArrayRef<Expr*> IndexExprs,
                                     Expr *Init)
: Expr(DesignatedInitExprClass, Ty,
       Init->getValueKind(), Init->getObjectKind(),
       Init->isTypeDependent(), Init->isValueDependent(),
       Init->isInstantiationDependent(),
       Init->containsUnexpandedParameterPack()),
  EqualOrColonLoc(EqualOrColonLoc), GNUSyntax(GNUSyntax),
  NumDesignators(Designators.size()), NumSubExprs(IndexExprs.size() + 1) {
this->Designators = new (C) Designator[NumDesignators];

// Record the initializer itself.
child_iterator Child = child_begin();
*Child++ = Init;

// Copy the designators and their subexpressions, computing
// value-dependence along the way.
unsigned IndexIdx = 0;
for (unsigned I = 0; I != NumDesignators; ++I) {
  this->Designators[I] = Designators[I];

  if (this->Designators[I].isArrayDesignator()) {
    // Compute type- and value-dependence.
    Expr *Index = IndexExprs[IndexIdx];
    if (Index->isTypeDependent() || Index->isValueDependent())
      ExprBits.TypeDependent = ExprBits.ValueDependent = true;
    if (Index->isInstantiationDependent())
      ExprBits.InstantiationDependent = true;
    // Propagate unexpanded parameter packs.
    if (Index->containsUnexpandedParameterPack())
      ExprBits.ContainsUnexpandedParameterPack = true;

    // Copy the index expressions into permanent storage.
    *Child++ = IndexExprs[IndexIdx++];
  } else if (this->Designators[I].isArrayRangeDesignator()) {
    // Compute type- and value-dependence.
    Expr *Start = IndexExprs[IndexIdx];
    Expr *End = IndexExprs[IndexIdx + 1];
    if (Start->isTypeDependent() || Start->isValueDependent() ||
        End->isTypeDependent() || End->isValueDependent()) {
      ExprBits.TypeDependent = ExprBits.ValueDependent = true;
      ExprBits.InstantiationDependent = true;
    } else if (Start->isInstantiationDependent() ||
               End->isInstantiationDependent()) {
      ExprBits.InstantiationDependent = true;
    }

    // Propagate unexpanded parameter packs.
    if (Start->containsUnexpandedParameterPack() ||
        End->containsUnexpandedParameterPack())
      ExprBits.ContainsUnexpandedParameterPack = true;

    // Copy the start/end expressions into permanent storage.
    *Child++ = IndexExprs[IndexIdx++];
    *Child++ = IndexExprs[IndexIdx++];
  }
}

assert(IndexIdx == IndexExprs.size() && "Wrong number of index expressions")((IndexIdx == IndexExprs.size() && "Wrong number of index expressions"
) ? static_cast<void> (0) : __assert_fail ("IndexIdx == IndexExprs.size() && \"Wrong number of index expressions\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4029, __PRETTY_FUNCTION__));
4030}

4032DesignatedInitExpr *
4033DesignatedInitExpr::Create(const ASTContext &C,
                         llvm::ArrayRef<Designator> Designators,
                         ArrayRef<Expr*> IndexExprs,
                         SourceLocation ColonOrEqualLoc,
                         bool UsesColonSyntax, Expr *Init) {
void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(IndexExprs.size() + 1),
                       alignof(DesignatedInitExpr));
return new (Mem) DesignatedInitExpr(C, C.VoidTy, Designators,
                                    ColonOrEqualLoc, UsesColonSyntax,
                                    IndexExprs, Init);
4043}

4045DesignatedInitExpr *DesignatedInitExpr::CreateEmpty(const ASTContext &C,
                                                  unsigned NumIndexExprs) {
void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(NumIndexExprs + 1),
                       alignof(DesignatedInitExpr));
return new (Mem) DesignatedInitExpr(NumIndexExprs + 1);
4050}

4052void DesignatedInitExpr::setDesignators(const ASTContext &C,
                                      const Designator *Desigs,
                                      unsigned NumDesigs) {
Designators = new (C) Designator[NumDesigs];
NumDesignators = NumDesigs;
for (unsigned I = 0; I != NumDesigs; ++I)
  Designators[I] = Desigs[I];
4059}

4061SourceRange DesignatedInitExpr::getDesignatorsSourceRange() const {
DesignatedInitExpr *DIE = const_cast<DesignatedInitExpr*>(this);
if (size() == 1)
  return DIE->getDesignator(0)->getSourceRange();
return SourceRange(DIE->getDesignator(0)->getBeginLoc(),
                   DIE->getDesignator(size() - 1)->getEndLoc());
4067}

4069SourceLocation DesignatedInitExpr::getBeginLoc() const {
SourceLocation StartLoc;
auto *DIE = const_cast<DesignatedInitExpr *>(this);
Designator &First = *DIE->getDesignator(0);
if (First.isFieldDesignator()) {
  if (GNUSyntax)
    StartLoc = SourceLocation::getFromRawEncoding(First.Field.FieldLoc);
  else
    StartLoc = SourceLocation::getFromRawEncoding(First.Field.DotLoc);
} else
  StartLoc =
    SourceLocation::getFromRawEncoding(First.ArrayOrRange.LBracketLoc);
return StartLoc;
4082}

4084SourceLocation DesignatedInitExpr::getEndLoc() const {
return getInit()->getEndLoc();
4086}

4088Expr *DesignatedInitExpr::getArrayIndex(const Designator& D) const {
assert(D.Kind == Designator::ArrayDesignator && "Requires array designator")((D.Kind == Designator::ArrayDesignator && "Requires array designator"
) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayDesignator && \"Requires array designator\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4089, __PRETTY_FUNCTION__));
return getSubExpr(D.ArrayOrRange.Index + 1);
4091}

4093Expr *DesignatedInitExpr::getArrayRangeStart(const Designator &D) const {
assert(D.Kind == Designator::ArrayRangeDesignator &&((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator"
) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4095, __PRETTY_FUNCTION__))
       "Requires array range designator")((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator"
) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4095, __PRETTY_FUNCTION__));
return getSubExpr(D.ArrayOrRange.Index + 1);
4097}

4099Expr *DesignatedInitExpr::getArrayRangeEnd(const Designator &D) const {
assert(D.Kind == Designator::ArrayRangeDesignator &&((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator"
) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4101, __PRETTY_FUNCTION__))
       "Requires array range designator")((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator"
) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4101, __PRETTY_FUNCTION__));
return getSubExpr(D.ArrayOrRange.Index + 2);
4103}

4105/// Replaces the designator at index @p Idx with the series
4106/// of designators in [First, Last).
4107void DesignatedInitExpr::ExpandDesignator(const ASTContext &C, unsigned Idx,
                                        const Designator *First,
                                        const Designator *Last) {
unsigned NumNewDesignators = Last - First;
if (NumNewDesignators == 0) {
  std::copy_backward(Designators + Idx + 1,
                     Designators + NumDesignators,
                     Designators + Idx);
  --NumNewDesignators;
  return;
} else if (NumNewDesignators == 1) {
  Designators[Idx] = *First;
  return;
}

Designator *NewDesignators
  = new (C) Designator[NumDesignators - 1 + NumNewDesignators];
std::copy(Designators, Designators + Idx, NewDesignators);
std::copy(First, Last, NewDesignators + Idx);
std::copy(Designators + Idx + 1, Designators + NumDesignators,
          NewDesignators + Idx + NumNewDesignators);
Designators = NewDesignators;
NumDesignators = NumDesignators - 1 + NumNewDesignators;
4130}

4132DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(const ASTContext &C,
  SourceLocation lBraceLoc, Expr *baseExpr, SourceLocation rBraceLoc)
: Expr(DesignatedInitUpdateExprClass, baseExpr->getType(), VK_RValue,
       OK_Ordinary, false, false, false, false) {
BaseAndUpdaterExprs[0] = baseExpr;

InitListExpr *ILE = new (C) InitListExpr(C, lBraceLoc, None, rBraceLoc);
ILE->setType(baseExpr->getType());
BaseAndUpdaterExprs[1] = ILE;
4141}

4143SourceLocation DesignatedInitUpdateExpr::getBeginLoc() const {
return getBase()->getBeginLoc();
4145}

4147SourceLocation DesignatedInitUpdateExpr::getEndLoc() const {
return getBase()->getEndLoc();
4149}

4151ParenListExpr::ParenListExpr(SourceLocation LParenLoc, ArrayRef<Expr *> Exprs,
                           SourceLocation RParenLoc)
  : Expr(ParenListExprClass, QualType(), VK_RValue, OK_Ordinary, false, false,
         false, false),
    LParenLoc(LParenLoc), RParenLoc(RParenLoc) {
ParenListExprBits.NumExprs = Exprs.size();

for (unsigned I = 0, N = Exprs.size(); I != N; ++I) {
  if (Exprs[I]->isTypeDependent())
    ExprBits.TypeDependent = true;
  if (Exprs[I]->isValueDependent())
    ExprBits.ValueDependent = true;
  if (Exprs[I]->isInstantiationDependent())
    ExprBits.InstantiationDependent = true;
  if (Exprs[I]->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;

  getTrailingObjects<Stmt *>()[I] = Exprs[I];
}
4170}

4172ParenListExpr::ParenListExpr(EmptyShell Empty, unsigned NumExprs)
  : Expr(ParenListExprClass, Empty) {
ParenListExprBits.NumExprs = NumExprs;
4175}

4177ParenListExpr *ParenListExpr::Create(const ASTContext &Ctx,
                                   SourceLocation LParenLoc,
                                   ArrayRef<Expr *> Exprs,
                                   SourceLocation RParenLoc) {
void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(Exprs.size()),
                         alignof(ParenListExpr));
return new (Mem) ParenListExpr(LParenLoc, Exprs, RParenLoc);
4184}

4186ParenListExpr *ParenListExpr::CreateEmpty(const ASTContext &Ctx,
                                        unsigned NumExprs) {
void *Mem =
    Ctx.Allocate(totalSizeToAlloc<Stmt *>(NumExprs), alignof(ParenListExpr));
return new (Mem) ParenListExpr(EmptyShell(), NumExprs);
4191}

4193const OpaqueValueExpr *OpaqueValueExpr::findInCopyConstruct(const Expr *e) {
if (const ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(e))
  e = ewc->getSubExpr();
if (const MaterializeTemporaryExpr *m = dyn_cast<MaterializeTemporaryExpr>(e))
  e = m->GetTemporaryExpr();
e = cast<CXXConstructExpr>(e)->getArg(0);
while (const ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e))
  e = ice->getSubExpr();
return cast<OpaqueValueExpr>(e);
4202}

4204PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &Context,
                                         EmptyShell sh,
                                         unsigned numSemanticExprs) {
void *buffer =
    Context.Allocate(totalSizeToAlloc<Expr *>(1 + numSemanticExprs),
                     alignof(PseudoObjectExpr));
return new(buffer) PseudoObjectExpr(sh, numSemanticExprs);
4211}

4213PseudoObjectExpr::PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs)
: Expr(PseudoObjectExprClass, shell) {
PseudoObjectExprBits.NumSubExprs = numSemanticExprs + 1;
4216}

4218PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &C, Expr *syntax,
                                         ArrayRef<Expr*> semantics,
                                         unsigned resultIndex) {
assert(syntax && "no syntactic expression!")((syntax && "no syntactic expression!") ? static_cast
<void> (0) : __assert_fail ("syntax && \"no syntactic expression!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4221, __PRETTY_FUNCTION__));
assert(semantics.size() && "no semantic expressions!")((semantics.size() && "no semantic expressions!") ? static_cast
<void> (0) : __assert_fail ("semantics.size() && \"no semantic expressions!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4222, __PRETTY_FUNCTION__));

QualType type;
ExprValueKind VK;
if (resultIndex == NoResult) {
  type = C.VoidTy;
  VK = VK_RValue;
} else {
  assert(resultIndex < semantics.size())((resultIndex < semantics.size()) ? static_cast<void>
 (0) : __assert_fail ("resultIndex < semantics.size()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4230, __PRETTY_FUNCTION__));
  type = semantics[resultIndex]->getType();
  VK = semantics[resultIndex]->getValueKind();
  assert(semantics[resultIndex]->getObjectKind() == OK_Ordinary)((semantics[resultIndex]->getObjectKind() == OK_Ordinary) ?
 static_cast<void> (0) : __assert_fail ("semantics[resultIndex]->getObjectKind() == OK_Ordinary"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4233, __PRETTY_FUNCTION__));
}

void *buffer = C.Allocate(totalSizeToAlloc<Expr *>(semantics.size() + 1),
                          alignof(PseudoObjectExpr));
return new(buffer) PseudoObjectExpr(type, VK, syntax, semantics,
                                    resultIndex);
4240}

4242PseudoObjectExpr::PseudoObjectExpr(QualType type, ExprValueKind VK,
                                 Expr *syntax, ArrayRef<Expr*> semantics,
                                 unsigned resultIndex)
: Expr(PseudoObjectExprClass, type, VK, OK_Ordinary,
       /*filled in at end of ctor*/ false, false, false, false) {
PseudoObjectExprBits.NumSubExprs = semantics.size() + 1;
PseudoObjectExprBits.ResultIndex = resultIndex + 1;

for (unsigned i = 0, e = semantics.size() + 1; i != e; ++i) {
  Expr *E = (i == 0 ? syntax : semantics[i-1]);
  getSubExprsBuffer()[i] = E;

  if (E->isTypeDependent())
    ExprBits.TypeDependent = true;
  if (E->isValueDependent())
    ExprBits.ValueDependent = true;
  if (E->isInstantiationDependent())
    ExprBits.InstantiationDependent = true;
  if (E->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;

  if (isa<OpaqueValueExpr>(E))
    assert(cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr &&((cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr
 && "opaque-value semantic expressions for pseudo-object "
 "operations must have sources") ? static_cast<void> (0
) : __assert_fail ("cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4266, __PRETTY_FUNCTION__))
           "opaque-value semantic expressions for pseudo-object "((cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr
 && "opaque-value semantic expressions for pseudo-object "
 "operations must have sources") ? static_cast<void> (0
) : __assert_fail ("cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4266, __PRETTY_FUNCTION__))
           "operations must have sources")((cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr
 && "opaque-value semantic expressions for pseudo-object "
 "operations must have sources") ? static_cast<void> (0
) : __assert_fail ("cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4266, __PRETTY_FUNCTION__));
}
4268}

4270//===----------------------------------------------------------------------===//
4271//  Child Iterators for iterating over subexpressions/substatements
4272//===----------------------------------------------------------------------===//

4274// UnaryExprOrTypeTraitExpr
4275Stmt::child_range UnaryExprOrTypeTraitExpr::children() {
const_child_range CCR =
    const_cast<const UnaryExprOrTypeTraitExpr *>(this)->children();
return child_range(cast_away_const(CCR.begin()), cast_away_const(CCR.end()));
4279}

4281Stmt::const_child_range UnaryExprOrTypeTraitExpr::children() const {
// If this is of a type and the type is a VLA type (and not a typedef), the
// size expression of the VLA needs to be treated as an executable expression.
// Why isn't this weirdness documented better in StmtIterator?
if (isArgumentType()) {
  if (const VariableArrayType *T =
          dyn_cast<VariableArrayType>(getArgumentType().getTypePtr()))
    return const_child_range(const_child_iterator(T), const_child_iterator());
  return const_child_range(const_child_iterator(), const_child_iterator());
}
return const_child_range(&Argument.Ex, &Argument.Ex + 1);
4292}

4294AtomicExpr::AtomicExpr(SourceLocation BLoc, ArrayRef<Expr*> args,
                     QualType t, AtomicOp op, SourceLocation RP)
: Expr(AtomicExprClass, t, VK_RValue, OK_Ordinary,
       false, false, false, false),
  NumSubExprs(args.size()), BuiltinLoc(BLoc), RParenLoc(RP), Op(op)
4299{
assert(args.size() == getNumSubExprs(op) && "wrong number of subexpressions")((args.size() == getNumSubExprs(op) && "wrong number of subexpressions"
) ? static_cast<void> (0) : __assert_fail ("args.size() == getNumSubExprs(op) && \"wrong number of subexpressions\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4300, __PRETTY_FUNCTION__));
for (unsigned i = 0; i != args.size(); i++) {
  if (args[i]->isTypeDependent())
    ExprBits.TypeDependent = true;
  if (args[i]->isValueDependent())
    ExprBits.ValueDependent = true;
  if (args[i]->isInstantiationDependent())
    ExprBits.InstantiationDependent = true;
  if (args[i]->containsUnexpandedParameterPack())
    ExprBits.ContainsUnexpandedParameterPack = true;

  SubExprs[i] = args[i];
}
4313}

4315unsigned AtomicExpr::getNumSubExprs(AtomicOp Op) {
switch (Op) {
case AO__c11_atomic_init:
case AO__opencl_atomic_init:
case AO__c11_atomic_load:
case AO__atomic_load_n:
  return 2;

case AO__opencl_atomic_load:
case AO__c11_atomic_store:
case AO__c11_atomic_exchange:
case AO__atomic_load:
case AO__atomic_store:
case AO__atomic_store_n:
case AO__atomic_exchange_n:
case AO__c11_atomic_fetch_add:
case AO__c11_atomic_fetch_sub:
case AO__c11_atomic_fetch_and:
case AO__c11_atomic_fetch_or:
case AO__c11_atomic_fetch_xor:
case AO__atomic_fetch_add:
case AO__atomic_fetch_sub:
case AO__atomic_fetch_and:
case AO__atomic_fetch_or:
case AO__atomic_fetch_xor:
case AO__atomic_fetch_nand:
case AO__atomic_add_fetch:
case AO__atomic_sub_fetch:
case AO__atomic_and_fetch:
case AO__atomic_or_fetch:
case AO__atomic_xor_fetch:
case AO__atomic_nand_fetch:
case AO__atomic_fetch_min:
case AO__atomic_fetch_max:
  return 3;

case AO__opencl_atomic_store:
case AO__opencl_atomic_exchange:
case AO__opencl_atomic_fetch_add:
case AO__opencl_atomic_fetch_sub:
case AO__opencl_atomic_fetch_and:
case AO__opencl_atomic_fetch_or:
case AO__opencl_atomic_fetch_xor:
case AO__opencl_atomic_fetch_min:
case AO__opencl_atomic_fetch_max:
case AO__atomic_exchange:
  return 4;

case AO__c11_atomic_compare_exchange_strong:
case AO__c11_atomic_compare_exchange_weak:
  return 5;

case AO__opencl_atomic_compare_exchange_strong:
case AO__opencl_atomic_compare_exchange_weak:
case AO__atomic_compare_exchange:
case AO__atomic_compare_exchange_n:
  return 6;
}
llvm_unreachable("unknown atomic op")::llvm::llvm_unreachable_internal("unknown atomic op", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4373);
4374}

4376QualType AtomicExpr::getValueType() const {
auto T = getPtr()->getType()->castAs<PointerType>()->getPointeeType();
if (auto AT = T->getAs<AtomicType>())
  return AT->getValueType();
return T;
4381}

4383QualType OMPArraySectionExpr::getBaseOriginalType(const Expr *Base) {
unsigned ArraySectionCount = 0;
while (auto *OASE = dyn_cast<OMPArraySectionExpr>(Base->IgnoreParens())) {
  Base = OASE->getBase();
  ++ArraySectionCount;
}
while (auto *ASE =
           dyn_cast<ArraySubscriptExpr>(Base->IgnoreParenImpCasts())) {
  Base = ASE->getBase();
  ++ArraySectionCount;
}
Base = Base->IgnoreParenImpCasts();
auto OriginalTy = Base->getType();
if (auto *DRE = dyn_cast<DeclRefExpr>(Base))
  if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl()))
    OriginalTy = PVD->getOriginalType().getNonReferenceType();

for (unsigned Cnt = 0; Cnt < ArraySectionCount; ++Cnt) {
  if (OriginalTy->isAnyPointerType())
    OriginalTy = OriginalTy->getPointeeType();
  else {
    assert (OriginalTy->isArrayType())((OriginalTy->isArrayType()) ? static_cast<void> (0)
 : __assert_fail ("OriginalTy->isArrayType()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/Expr.cpp"
, 4404, __PRETTY_FUNCTION__));
    OriginalTy = OriginalTy->castAsArrayTypeUnsafe()->getElementType();
  }
}
return OriginalTy;
4409}