Bug Summary

File:clang/lib/AST/MicrosoftMangle.cpp
Warning:line 2775, column 7
Called C++ object pointer is null

Annotated Source Code

Press '?' to see keyboard shortcuts

clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name MicrosoftMangle.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 -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-12/lib/clang/12.0.0 -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-12~++20200806111125+5446ec85070/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST -I /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/include -I /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/build-llvm/include -I /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/llvm/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/local/include -internal-isystem /usr/lib/llvm-12/lib/clang/12.0.0/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++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070=. -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-08-06-171148-17323-1 -x c++ /build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp

/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp

1//===--- MicrosoftMangle.cpp - Microsoft Visual C++ Name Mangling ---------===//
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 provides C++ name mangling targeting the Microsoft Visual C++ ABI.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/AST/ASTContext.h"
14#include "clang/AST/Attr.h"
15#include "clang/AST/CXXInheritance.h"
16#include "clang/AST/CharUnits.h"
17#include "clang/AST/Decl.h"
18#include "clang/AST/DeclCXX.h"
19#include "clang/AST/DeclObjC.h"
20#include "clang/AST/DeclOpenMP.h"
21#include "clang/AST/DeclTemplate.h"
22#include "clang/AST/Expr.h"
23#include "clang/AST/ExprCXX.h"
24#include "clang/AST/Mangle.h"
25#include "clang/AST/VTableBuilder.h"
26#include "clang/Basic/ABI.h"
27#include "clang/Basic/DiagnosticOptions.h"
28#include "clang/Basic/FileManager.h"
29#include "clang/Basic/SourceManager.h"
30#include "clang/Basic/TargetInfo.h"
31#include "llvm/ADT/StringExtras.h"
32#include "llvm/Support/CRC.h"
33#include "llvm/Support/MD5.h"
34#include "llvm/Support/MathExtras.h"
35#include "llvm/Support/StringSaver.h"
36#include "llvm/Support/xxhash.h"
37
38using namespace clang;
39
40namespace {
41
42struct msvc_hashing_ostream : public llvm::raw_svector_ostream {
43 raw_ostream &OS;
44 llvm::SmallString<64> Buffer;
45
46 msvc_hashing_ostream(raw_ostream &OS)
47 : llvm::raw_svector_ostream(Buffer), OS(OS) {}
48 ~msvc_hashing_ostream() override {
49 StringRef MangledName = str();
50 bool StartsWithEscape = MangledName.startswith("\01");
51 if (StartsWithEscape)
52 MangledName = MangledName.drop_front(1);
53 if (MangledName.size() <= 4096) {
54 OS << str();
55 return;
56 }
57
58 llvm::MD5 Hasher;
59 llvm::MD5::MD5Result Hash;
60 Hasher.update(MangledName);
61 Hasher.final(Hash);
62
63 SmallString<32> HexString;
64 llvm::MD5::stringifyResult(Hash, HexString);
65
66 if (StartsWithEscape)
67 OS << '\01';
68 OS << "??@" << HexString << '@';
69 }
70};
71
72static const DeclContext *
73getLambdaDefaultArgumentDeclContext(const Decl *D) {
74 if (const auto *RD = dyn_cast<CXXRecordDecl>(D))
75 if (RD->isLambda())
76 if (const auto *Parm =
77 dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl()))
78 return Parm->getDeclContext();
79 return nullptr;
80}
81
82/// Retrieve the declaration context that should be used when mangling
83/// the given declaration.
84static const DeclContext *getEffectiveDeclContext(const Decl *D) {
85 // The ABI assumes that lambda closure types that occur within
86 // default arguments live in the context of the function. However, due to
87 // the way in which Clang parses and creates function declarations, this is
88 // not the case: the lambda closure type ends up living in the context
89 // where the function itself resides, because the function declaration itself
90 // had not yet been created. Fix the context here.
91 if (const auto *LDADC = getLambdaDefaultArgumentDeclContext(D))
92 return LDADC;
93
94 // Perform the same check for block literals.
95 if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
96 if (ParmVarDecl *ContextParam =
97 dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl()))
98 return ContextParam->getDeclContext();
99 }
100
101 const DeclContext *DC = D->getDeclContext();
102 if (isa<CapturedDecl>(DC) || isa<OMPDeclareReductionDecl>(DC) ||
103 isa<OMPDeclareMapperDecl>(DC)) {
104 return getEffectiveDeclContext(cast<Decl>(DC));
105 }
106
107 return DC->getRedeclContext();
108}
109
110static const DeclContext *getEffectiveParentContext(const DeclContext *DC) {
111 return getEffectiveDeclContext(cast<Decl>(DC));
112}
113
114static const FunctionDecl *getStructor(const NamedDecl *ND) {
115 if (const auto *FTD = dyn_cast<FunctionTemplateDecl>(ND))
116 return FTD->getTemplatedDecl()->getCanonicalDecl();
117
118 const auto *FD = cast<FunctionDecl>(ND);
119 if (const auto *FTD = FD->getPrimaryTemplate())
120 return FTD->getTemplatedDecl()->getCanonicalDecl();
121
122 return FD->getCanonicalDecl();
123}
124
125/// MicrosoftMangleContextImpl - Overrides the default MangleContext for the
126/// Microsoft Visual C++ ABI.
127class MicrosoftMangleContextImpl : public MicrosoftMangleContext {
128 typedef std::pair<const DeclContext *, IdentifierInfo *> DiscriminatorKeyTy;
129 llvm::DenseMap<DiscriminatorKeyTy, unsigned> Discriminator;
130 llvm::DenseMap<const NamedDecl *, unsigned> Uniquifier;
131 llvm::DenseMap<const CXXRecordDecl *, unsigned> LambdaIds;
132 llvm::DenseMap<const NamedDecl *, unsigned> SEHFilterIds;
133 llvm::DenseMap<const NamedDecl *, unsigned> SEHFinallyIds;
134 SmallString<16> AnonymousNamespaceHash;
135
136public:
137 MicrosoftMangleContextImpl(ASTContext &Context, DiagnosticsEngine &Diags);
138 bool shouldMangleCXXName(const NamedDecl *D) override;
139 bool shouldMangleStringLiteral(const StringLiteral *SL) override;
140 void mangleCXXName(GlobalDecl GD, raw_ostream &Out) override;
141 void mangleVirtualMemPtrThunk(const CXXMethodDecl *MD,
142 const MethodVFTableLocation &ML,
143 raw_ostream &Out) override;
144 void mangleThunk(const CXXMethodDecl *MD, const ThunkInfo &Thunk,
145 raw_ostream &) override;
146 void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type,
147 const ThisAdjustment &ThisAdjustment,
148 raw_ostream &) override;
149 void mangleCXXVFTable(const CXXRecordDecl *Derived,
150 ArrayRef<const CXXRecordDecl *> BasePath,
151 raw_ostream &Out) override;
152 void mangleCXXVBTable(const CXXRecordDecl *Derived,
153 ArrayRef<const CXXRecordDecl *> BasePath,
154 raw_ostream &Out) override;
155 void mangleCXXVirtualDisplacementMap(const CXXRecordDecl *SrcRD,
156 const CXXRecordDecl *DstRD,
157 raw_ostream &Out) override;
158 void mangleCXXThrowInfo(QualType T, bool IsConst, bool IsVolatile,
159 bool IsUnaligned, uint32_t NumEntries,
160 raw_ostream &Out) override;
161 void mangleCXXCatchableTypeArray(QualType T, uint32_t NumEntries,
162 raw_ostream &Out) override;
163 void mangleCXXCatchableType(QualType T, const CXXConstructorDecl *CD,
164 CXXCtorType CT, uint32_t Size, uint32_t NVOffset,
165 int32_t VBPtrOffset, uint32_t VBIndex,
166 raw_ostream &Out) override;
167 void mangleCXXRTTI(QualType T, raw_ostream &Out) override;
168 void mangleCXXRTTIName(QualType T, raw_ostream &Out) override;
169 void mangleCXXRTTIBaseClassDescriptor(const CXXRecordDecl *Derived,
170 uint32_t NVOffset, int32_t VBPtrOffset,
171 uint32_t VBTableOffset, uint32_t Flags,
172 raw_ostream &Out) override;
173 void mangleCXXRTTIBaseClassArray(const CXXRecordDecl *Derived,
174 raw_ostream &Out) override;
175 void mangleCXXRTTIClassHierarchyDescriptor(const CXXRecordDecl *Derived,
176 raw_ostream &Out) override;
177 void
178 mangleCXXRTTICompleteObjectLocator(const CXXRecordDecl *Derived,
179 ArrayRef<const CXXRecordDecl *> BasePath,
180 raw_ostream &Out) override;
181 void mangleTypeName(QualType T, raw_ostream &) override;
182 void mangleReferenceTemporary(const VarDecl *, unsigned ManglingNumber,
183 raw_ostream &) override;
184 void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &Out) override;
185 void mangleThreadSafeStaticGuardVariable(const VarDecl *D, unsigned GuardNum,
186 raw_ostream &Out) override;
187 void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override;
188 void mangleDynamicAtExitDestructor(const VarDecl *D,
189 raw_ostream &Out) override;
190 void mangleSEHFilterExpression(const NamedDecl *EnclosingDecl,
191 raw_ostream &Out) override;
192 void mangleSEHFinallyBlock(const NamedDecl *EnclosingDecl,
193 raw_ostream &Out) override;
194 void mangleStringLiteral(const StringLiteral *SL, raw_ostream &Out) override;
195 bool getNextDiscriminator(const NamedDecl *ND, unsigned &disc) {
196 const DeclContext *DC = getEffectiveDeclContext(ND);
197 if (!DC->isFunctionOrMethod())
198 return false;
199
200 // Lambda closure types are already numbered, give out a phony number so
201 // that they demangle nicely.
202 if (const auto *RD = dyn_cast<CXXRecordDecl>(ND)) {
203 if (RD->isLambda()) {
204 disc = 1;
205 return true;
206 }
207 }
208
209 // Use the canonical number for externally visible decls.
210 if (ND->isExternallyVisible()) {
211 disc = getASTContext().getManglingNumber(ND);
212 return true;
213 }
214
215 // Anonymous tags are already numbered.
216 if (const TagDecl *Tag = dyn_cast<TagDecl>(ND)) {
217 if (!Tag->hasNameForLinkage() &&
218 !getASTContext().getDeclaratorForUnnamedTagDecl(Tag) &&
219 !getASTContext().getTypedefNameForUnnamedTagDecl(Tag))
220 return false;
221 }
222
223 // Make up a reasonable number for internal decls.
224 unsigned &discriminator = Uniquifier[ND];
225 if (!discriminator)
226 discriminator = ++Discriminator[std::make_pair(DC, ND->getIdentifier())];
227 disc = discriminator + 1;
228 return true;
229 }
230
231 unsigned getLambdaId(const CXXRecordDecl *RD) {
232 assert(RD->isLambda() && "RD must be a lambda!")((RD->isLambda() && "RD must be a lambda!") ? static_cast
<void> (0) : __assert_fail ("RD->isLambda() && \"RD must be a lambda!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 232, __PRETTY_FUNCTION__))
;
233 assert(!RD->isExternallyVisible() && "RD must not be visible!")((!RD->isExternallyVisible() && "RD must not be visible!"
) ? static_cast<void> (0) : __assert_fail ("!RD->isExternallyVisible() && \"RD must not be visible!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 233, __PRETTY_FUNCTION__))
;
234 assert(RD->getLambdaManglingNumber() == 0 &&((RD->getLambdaManglingNumber() == 0 && "RD must not have a mangling number!"
) ? static_cast<void> (0) : __assert_fail ("RD->getLambdaManglingNumber() == 0 && \"RD must not have a mangling number!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 235, __PRETTY_FUNCTION__))
235 "RD must not have a mangling number!")((RD->getLambdaManglingNumber() == 0 && "RD must not have a mangling number!"
) ? static_cast<void> (0) : __assert_fail ("RD->getLambdaManglingNumber() == 0 && \"RD must not have a mangling number!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 235, __PRETTY_FUNCTION__))
;
236 std::pair<llvm::DenseMap<const CXXRecordDecl *, unsigned>::iterator, bool>
237 Result = LambdaIds.insert(std::make_pair(RD, LambdaIds.size()));
238 return Result.first->second;
239 }
240
241 /// Return a character sequence that is (somewhat) unique to the TU suitable
242 /// for mangling anonymous namespaces.
243 StringRef getAnonymousNamespaceHash() const {
244 return AnonymousNamespaceHash;
245 }
246
247private:
248 void mangleInitFiniStub(const VarDecl *D, char CharCode, raw_ostream &Out);
249};
250
251/// MicrosoftCXXNameMangler - Manage the mangling of a single name for the
252/// Microsoft Visual C++ ABI.
253class MicrosoftCXXNameMangler {
254 MicrosoftMangleContextImpl &Context;
255 raw_ostream &Out;
256
257 /// The "structor" is the top-level declaration being mangled, if
258 /// that's not a template specialization; otherwise it's the pattern
259 /// for that specialization.
260 const NamedDecl *Structor;
261 unsigned StructorType;
262
263 typedef llvm::SmallVector<std::string, 10> BackRefVec;
264 BackRefVec NameBackReferences;
265
266 typedef llvm::DenseMap<const void *, unsigned> ArgBackRefMap;
267 ArgBackRefMap FunArgBackReferences;
268 ArgBackRefMap TemplateArgBackReferences;
269
270 typedef llvm::DenseMap<const void *, StringRef> TemplateArgStringMap;
271 TemplateArgStringMap TemplateArgStrings;
272 llvm::StringSaver TemplateArgStringStorage;
273 llvm::BumpPtrAllocator TemplateArgStringStorageAlloc;
274
275 typedef std::set<std::pair<int, bool>> PassObjectSizeArgsSet;
276 PassObjectSizeArgsSet PassObjectSizeArgs;
277
278 ASTContext &getASTContext() const { return Context.getASTContext(); }
279
280 const bool PointersAre64Bit;
281
282public:
283 enum QualifierMangleMode { QMM_Drop, QMM_Mangle, QMM_Escape, QMM_Result };
284
285 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_)
286 : Context(C), Out(Out_), Structor(nullptr), StructorType(-1),
287 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
288 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
289 64) {}
290
291 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_,
292 const CXXConstructorDecl *D, CXXCtorType Type)
293 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
294 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
295 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
296 64) {}
297
298 MicrosoftCXXNameMangler(MicrosoftMangleContextImpl &C, raw_ostream &Out_,
299 const CXXDestructorDecl *D, CXXDtorType Type)
300 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
301 TemplateArgStringStorage(TemplateArgStringStorageAlloc),
302 PointersAre64Bit(C.getASTContext().getTargetInfo().getPointerWidth(0) ==
303 64) {}
304
305 raw_ostream &getStream() const { return Out; }
306
307 void mangle(const NamedDecl *D, StringRef Prefix = "?");
308 void mangleName(const NamedDecl *ND);
309 void mangleFunctionEncoding(const FunctionDecl *FD, bool ShouldMangle);
310 void mangleVariableEncoding(const VarDecl *VD);
311 void mangleMemberDataPointer(const CXXRecordDecl *RD, const ValueDecl *VD);
312 void mangleMemberFunctionPointer(const CXXRecordDecl *RD,
313 const CXXMethodDecl *MD);
314 void mangleVirtualMemPtrThunk(const CXXMethodDecl *MD,
315 const MethodVFTableLocation &ML);
316 void mangleNumber(int64_t Number);
317 void mangleTagTypeKind(TagTypeKind TK);
318 void mangleArtificialTagType(TagTypeKind TK, StringRef UnqualifiedName,
319 ArrayRef<StringRef> NestedNames = None);
320 void mangleAddressSpaceType(QualType T, Qualifiers Quals, SourceRange Range);
321 void mangleType(QualType T, SourceRange Range,
322 QualifierMangleMode QMM = QMM_Mangle);
323 void mangleFunctionType(const FunctionType *T,
324 const FunctionDecl *D = nullptr,
325 bool ForceThisQuals = false,
326 bool MangleExceptionSpec = true);
327 void mangleNestedName(const NamedDecl *ND);
328
329private:
330 bool isStructorDecl(const NamedDecl *ND) const {
331 return ND == Structor || getStructor(ND) == Structor;
332 }
333
334 bool is64BitPointer(Qualifiers Quals) const {
335 LangAS AddrSpace = Quals.getAddressSpace();
336 return AddrSpace == LangAS::ptr64 ||
337 (PointersAre64Bit && !(AddrSpace == LangAS::ptr32_sptr ||
338 AddrSpace == LangAS::ptr32_uptr));
339 }
340
341 void mangleUnqualifiedName(const NamedDecl *ND) {
342 mangleUnqualifiedName(ND, ND->getDeclName());
343 }
344 void mangleUnqualifiedName(const NamedDecl *ND, DeclarationName Name);
345 void mangleSourceName(StringRef Name);
346 void mangleOperatorName(OverloadedOperatorKind OO, SourceLocation Loc);
347 void mangleCXXDtorType(CXXDtorType T);
348 void mangleQualifiers(Qualifiers Quals, bool IsMember);
349 void mangleRefQualifier(RefQualifierKind RefQualifier);
350 void manglePointerCVQualifiers(Qualifiers Quals);
351 void manglePointerExtQualifiers(Qualifiers Quals, QualType PointeeType);
352
353 void mangleUnscopedTemplateName(const TemplateDecl *ND);
354 void
355 mangleTemplateInstantiationName(const TemplateDecl *TD,
356 const TemplateArgumentList &TemplateArgs);
357 void mangleObjCMethodName(const ObjCMethodDecl *MD);
358
359 void mangleFunctionArgumentType(QualType T, SourceRange Range);
360 void manglePassObjectSizeArg(const PassObjectSizeAttr *POSA);
361
362 bool isArtificialTagType(QualType T) const;
363
364 // Declare manglers for every type class.
365#define ABSTRACT_TYPE(CLASS, PARENT)
366#define NON_CANONICAL_TYPE(CLASS, PARENT)
367#define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T, \
368 Qualifiers Quals, \
369 SourceRange Range);
370#include "clang/AST/TypeNodes.inc"
371#undef ABSTRACT_TYPE
372#undef NON_CANONICAL_TYPE
373#undef TYPE
374
375 void mangleType(const TagDecl *TD);
376 void mangleDecayedArrayType(const ArrayType *T);
377 void mangleArrayType(const ArrayType *T);
378 void mangleFunctionClass(const FunctionDecl *FD);
379 void mangleCallingConvention(CallingConv CC);
380 void mangleCallingConvention(const FunctionType *T);
381 void mangleIntegerLiteral(const llvm::APSInt &Number, bool IsBoolean);
382 void mangleExpression(const Expr *E);
383 void mangleThrowSpecification(const FunctionProtoType *T);
384
385 void mangleTemplateArgs(const TemplateDecl *TD,
386 const TemplateArgumentList &TemplateArgs);
387 void mangleTemplateArg(const TemplateDecl *TD, const TemplateArgument &TA,
388 const NamedDecl *Parm);
389
390 void mangleObjCProtocol(const ObjCProtocolDecl *PD);
391 void mangleObjCLifetime(const QualType T, Qualifiers Quals,
392 SourceRange Range);
393 void mangleObjCKindOfType(const ObjCObjectType *T, Qualifiers Quals,
394 SourceRange Range);
395};
396}
397
398MicrosoftMangleContextImpl::MicrosoftMangleContextImpl(ASTContext &Context,
399 DiagnosticsEngine &Diags)
400 : MicrosoftMangleContext(Context, Diags) {
401 // To mangle anonymous namespaces, hash the path to the main source file. The
402 // path should be whatever (probably relative) path was passed on the command
403 // line. The goal is for the compiler to produce the same output regardless of
404 // working directory, so use the uncanonicalized relative path.
405 //
406 // It's important to make the mangled names unique because, when CodeView
407 // debug info is in use, the debugger uses mangled type names to distinguish
408 // between otherwise identically named types in anonymous namespaces.
409 //
410 // These symbols are always internal, so there is no need for the hash to
411 // match what MSVC produces. For the same reason, clang is free to change the
412 // hash at any time without breaking compatibility with old versions of clang.
413 // The generated names are intended to look similar to what MSVC generates,
414 // which are something like "?A0x01234567@".
415 SourceManager &SM = Context.getSourceManager();
416 if (const FileEntry *FE = SM.getFileEntryForID(SM.getMainFileID())) {
417 // Truncate the hash so we get 8 characters of hexadecimal.
418 uint32_t TruncatedHash = uint32_t(xxHash64(FE->getName()));
419 AnonymousNamespaceHash = llvm::utohexstr(TruncatedHash);
420 } else {
421 // If we don't have a path to the main file, we'll just use 0.
422 AnonymousNamespaceHash = "0";
423 }
424}
425
426bool MicrosoftMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) {
427 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
428 LanguageLinkage L = FD->getLanguageLinkage();
429 // Overloadable functions need mangling.
430 if (FD->hasAttr<OverloadableAttr>())
431 return true;
432
433 // The ABI expects that we would never mangle "typical" user-defined entry
434 // points regardless of visibility or freestanding-ness.
435 //
436 // N.B. This is distinct from asking about "main". "main" has a lot of
437 // special rules associated with it in the standard while these
438 // user-defined entry points are outside of the purview of the standard.
439 // For example, there can be only one definition for "main" in a standards
440 // compliant program; however nothing forbids the existence of wmain and
441 // WinMain in the same translation unit.
442 if (FD->isMSVCRTEntryPoint())
443 return false;
444
445 // C++ functions and those whose names are not a simple identifier need
446 // mangling.
447 if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage)
448 return true;
449
450 // C functions are not mangled.
451 if (L == CLanguageLinkage)
452 return false;
453 }
454
455 // Otherwise, no mangling is done outside C++ mode.
456 if (!getASTContext().getLangOpts().CPlusPlus)
457 return false;
458
459 const VarDecl *VD = dyn_cast<VarDecl>(D);
460 if (VD && !isa<DecompositionDecl>(D)) {
461 // C variables are not mangled.
462 if (VD->isExternC())
463 return false;
464
465 // Variables at global scope with internal linkage are not mangled.
466 const DeclContext *DC = getEffectiveDeclContext(D);
467 // Check for extern variable declared locally.
468 if (DC->isFunctionOrMethod() && D->hasLinkage())
469 while (!DC->isNamespace() && !DC->isTranslationUnit())
470 DC = getEffectiveParentContext(DC);
471
472 if (DC->isTranslationUnit() && D->getFormalLinkage() == InternalLinkage &&
473 !isa<VarTemplateSpecializationDecl>(D) &&
474 D->getIdentifier() != nullptr)
475 return false;
476 }
477
478 return true;
479}
480
481bool
482MicrosoftMangleContextImpl::shouldMangleStringLiteral(const StringLiteral *SL) {
483 return true;
484}
485
486void MicrosoftCXXNameMangler::mangle(const NamedDecl *D, StringRef Prefix) {
487 // MSVC doesn't mangle C++ names the same way it mangles extern "C" names.
488 // Therefore it's really important that we don't decorate the
489 // name with leading underscores or leading/trailing at signs. So, by
490 // default, we emit an asm marker at the start so we get the name right.
491 // Callers can override this with a custom prefix.
492
493 // <mangled-name> ::= ? <name> <type-encoding>
494 Out << Prefix;
495 mangleName(D);
496 if (const FunctionDecl *FD
2.1
'FD' is null
2.1
'FD' is null
= dyn_cast<FunctionDecl>(D))
2
Assuming 'D' is not a 'FunctionDecl'
3
Taking false branch
497 mangleFunctionEncoding(FD, Context.shouldMangleDeclName(FD));
498 else if (const VarDecl *VD
4.1
'VD' is non-null
4.1
'VD' is non-null
= dyn_cast<VarDecl>(D))
4
Assuming 'D' is a 'VarDecl'
5
Taking true branch
499 mangleVariableEncoding(VD);
6
Calling 'MicrosoftCXXNameMangler::mangleVariableEncoding'
500 else if (isa<MSGuidDecl>(D))
501 // MSVC appears to mangle GUIDs as if they were variables of type
502 // 'const struct __s_GUID'.
503 Out << "3U__s_GUID@@B";
504 else
505 llvm_unreachable("Tried to mangle unexpected NamedDecl!")::llvm::llvm_unreachable_internal("Tried to mangle unexpected NamedDecl!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 505)
;
506}
507
508void MicrosoftCXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD,
509 bool ShouldMangle) {
510 // <type-encoding> ::= <function-class> <function-type>
511
512 // Since MSVC operates on the type as written and not the canonical type, it
513 // actually matters which decl we have here. MSVC appears to choose the
514 // first, since it is most likely to be the declaration in a header file.
515 FD = FD->getFirstDecl();
516
517 // We should never ever see a FunctionNoProtoType at this point.
518 // We don't even know how to mangle their types anyway :).
519 const FunctionProtoType *FT = FD->getType()->castAs<FunctionProtoType>();
520
521 // extern "C" functions can hold entities that must be mangled.
522 // As it stands, these functions still need to get expressed in the full
523 // external name. They have their class and type omitted, replaced with '9'.
524 if (ShouldMangle) {
525 // We would like to mangle all extern "C" functions using this additional
526 // component but this would break compatibility with MSVC's behavior.
527 // Instead, do this when we know that compatibility isn't important (in
528 // other words, when it is an overloaded extern "C" function).
529 if (FD->isExternC() && FD->hasAttr<OverloadableAttr>())
530 Out << "$$J0";
531
532 mangleFunctionClass(FD);
533
534 mangleFunctionType(FT, FD, false, false);
535 } else {
536 Out << '9';
537 }
538}
539
540void MicrosoftCXXNameMangler::mangleVariableEncoding(const VarDecl *VD) {
541 // <type-encoding> ::= <storage-class> <variable-type>
542 // <storage-class> ::= 0 # private static member
543 // ::= 1 # protected static member
544 // ::= 2 # public static member
545 // ::= 3 # global
546 // ::= 4 # static local
547
548 // The first character in the encoding (after the name) is the storage class.
549 if (VD->isStaticDataMember()) {
7
Taking false branch
550 // If it's a static member, it also encodes the access level.
551 switch (VD->getAccess()) {
552 default:
553 case AS_private: Out << '0'; break;
554 case AS_protected: Out << '1'; break;
555 case AS_public: Out << '2'; break;
556 }
557 }
558 else if (!VD->isStaticLocal())
8
Taking true branch
559 Out << '3';
560 else
561 Out << '4';
562 // Now mangle the type.
563 // <variable-type> ::= <type> <cvr-qualifiers>
564 // ::= <type> <pointee-cvr-qualifiers> # pointers, references
565 // Pointers and references are odd. The type of 'int * const foo;' gets
566 // mangled as 'QAHA' instead of 'PAHB', for example.
567 SourceRange SR = VD->getSourceRange();
568 QualType Ty = VD->getType();
569 if (Ty->isPointerType() || Ty->isReferenceType() ||
9
Taking false branch
570 Ty->isMemberPointerType()) {
571 mangleType(Ty, SR, QMM_Drop);
572 manglePointerExtQualifiers(
573 Ty.getDesugaredType(getASTContext()).getLocalQualifiers(), QualType());
574 if (const MemberPointerType *MPT = Ty->getAs<MemberPointerType>()) {
575 mangleQualifiers(MPT->getPointeeType().getQualifiers(), true);
576 // Member pointers are suffixed with a back reference to the member
577 // pointer's class name.
578 mangleName(MPT->getClass()->getAsCXXRecordDecl());
579 } else
580 mangleQualifiers(Ty->getPointeeType().getQualifiers(), false);
581 } else if (const ArrayType *AT = getASTContext().getAsArrayType(Ty)) {
10
Assuming 'AT' is null
11
Taking false branch
582 // Global arrays are funny, too.
583 mangleDecayedArrayType(AT);
584 if (AT->getElementType()->isArrayType())
585 Out << 'A';
586 else
587 mangleQualifiers(Ty.getQualifiers(), false);
588 } else {
589 mangleType(Ty, SR, QMM_Drop);
12
Calling 'MicrosoftCXXNameMangler::mangleType'
590 mangleQualifiers(Ty.getQualifiers(), false);
591 }
592}
593
594void MicrosoftCXXNameMangler::mangleMemberDataPointer(const CXXRecordDecl *RD,
595 const ValueDecl *VD) {
596 // <member-data-pointer> ::= <integer-literal>
597 // ::= $F <number> <number>
598 // ::= $G <number> <number> <number>
599
600 int64_t FieldOffset;
601 int64_t VBTableOffset;
602 MSInheritanceModel IM = RD->getMSInheritanceModel();
603 if (VD) {
604 FieldOffset = getASTContext().getFieldOffset(VD);
605 assert(FieldOffset % getASTContext().getCharWidth() == 0 &&((FieldOffset % getASTContext().getCharWidth() == 0 &&
"cannot take address of bitfield") ? static_cast<void>
(0) : __assert_fail ("FieldOffset % getASTContext().getCharWidth() == 0 && \"cannot take address of bitfield\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 606, __PRETTY_FUNCTION__))
606 "cannot take address of bitfield")((FieldOffset % getASTContext().getCharWidth() == 0 &&
"cannot take address of bitfield") ? static_cast<void>
(0) : __assert_fail ("FieldOffset % getASTContext().getCharWidth() == 0 && \"cannot take address of bitfield\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 606, __PRETTY_FUNCTION__))
;
607 FieldOffset /= getASTContext().getCharWidth();
608
609 VBTableOffset = 0;
610
611 if (IM == MSInheritanceModel::Virtual)
612 FieldOffset -= getASTContext().getOffsetOfBaseWithVBPtr(RD).getQuantity();
613 } else {
614 FieldOffset = RD->nullFieldOffsetIsZero() ? 0 : -1;
615
616 VBTableOffset = -1;
617 }
618
619 char Code = '\0';
620 switch (IM) {
621 case MSInheritanceModel::Single: Code = '0'; break;
622 case MSInheritanceModel::Multiple: Code = '0'; break;
623 case MSInheritanceModel::Virtual: Code = 'F'; break;
624 case MSInheritanceModel::Unspecified: Code = 'G'; break;
625 }
626
627 Out << '$' << Code;
628
629 mangleNumber(FieldOffset);
630
631 // The C++ standard doesn't allow base-to-derived member pointer conversions
632 // in template parameter contexts, so the vbptr offset of data member pointers
633 // is always zero.
634 if (inheritanceModelHasVBPtrOffsetField(IM))
635 mangleNumber(0);
636 if (inheritanceModelHasVBTableOffsetField(IM))
637 mangleNumber(VBTableOffset);
638}
639
640void
641MicrosoftCXXNameMangler::mangleMemberFunctionPointer(const CXXRecordDecl *RD,
642 const CXXMethodDecl *MD) {
643 // <member-function-pointer> ::= $1? <name>
644 // ::= $H? <name> <number>
645 // ::= $I? <name> <number> <number>
646 // ::= $J? <name> <number> <number> <number>
647
648 MSInheritanceModel IM = RD->getMSInheritanceModel();
649
650 char Code = '\0';
651 switch (IM) {
652 case MSInheritanceModel::Single: Code = '1'; break;
653 case MSInheritanceModel::Multiple: Code = 'H'; break;
654 case MSInheritanceModel::Virtual: Code = 'I'; break;
655 case MSInheritanceModel::Unspecified: Code = 'J'; break;
656 }
657
658 // If non-virtual, mangle the name. If virtual, mangle as a virtual memptr
659 // thunk.
660 uint64_t NVOffset = 0;
661 uint64_t VBTableOffset = 0;
662 uint64_t VBPtrOffset = 0;
663 if (MD) {
664 Out << '$' << Code << '?';
665 if (MD->isVirtual()) {
666 MicrosoftVTableContext *VTContext =
667 cast<MicrosoftVTableContext>(getASTContext().getVTableContext());
668 MethodVFTableLocation ML =
669 VTContext->getMethodVFTableLocation(GlobalDecl(MD));
670 mangleVirtualMemPtrThunk(MD, ML);
671 NVOffset = ML.VFPtrOffset.getQuantity();
672 VBTableOffset = ML.VBTableIndex * 4;
673 if (ML.VBase) {
674 const ASTRecordLayout &Layout = getASTContext().getASTRecordLayout(RD);
675 VBPtrOffset = Layout.getVBPtrOffset().getQuantity();
676 }
677 } else {
678 mangleName(MD);
679 mangleFunctionEncoding(MD, /*ShouldMangle=*/true);
680 }
681
682 if (VBTableOffset == 0 && IM == MSInheritanceModel::Virtual)
683 NVOffset -= getASTContext().getOffsetOfBaseWithVBPtr(RD).getQuantity();
684 } else {
685 // Null single inheritance member functions are encoded as a simple nullptr.
686 if (IM == MSInheritanceModel::Single) {
687 Out << "$0A@";
688 return;
689 }
690 if (IM == MSInheritanceModel::Unspecified)
691 VBTableOffset = -1;
692 Out << '$' << Code;
693 }
694
695 if (inheritanceModelHasNVOffsetField(/*IsMemberFunction=*/true, IM))
696 mangleNumber(static_cast<uint32_t>(NVOffset));
697 if (inheritanceModelHasVBPtrOffsetField(IM))
698 mangleNumber(VBPtrOffset);
699 if (inheritanceModelHasVBTableOffsetField(IM))
700 mangleNumber(VBTableOffset);
701}
702
703void MicrosoftCXXNameMangler::mangleVirtualMemPtrThunk(
704 const CXXMethodDecl *MD, const MethodVFTableLocation &ML) {
705 // Get the vftable offset.
706 CharUnits PointerWidth = getASTContext().toCharUnitsFromBits(
707 getASTContext().getTargetInfo().getPointerWidth(0));
708 uint64_t OffsetInVFTable = ML.Index * PointerWidth.getQuantity();
709
710 Out << "?_9";
711 mangleName(MD->getParent());
712 Out << "$B";
713 mangleNumber(OffsetInVFTable);
714 Out << 'A';
715 mangleCallingConvention(MD->getType()->castAs<FunctionProtoType>());
716}
717
718void MicrosoftCXXNameMangler::mangleName(const NamedDecl *ND) {
719 // <name> ::= <unscoped-name> {[<named-scope>]+ | [<nested-name>]}? @
720
721 // Always start with the unqualified name.
722 mangleUnqualifiedName(ND);
723
724 mangleNestedName(ND);
725
726 // Terminate the whole name with an '@'.
727 Out << '@';
728}
729
730void MicrosoftCXXNameMangler::mangleNumber(int64_t Number) {
731 // <non-negative integer> ::= A@ # when Number == 0
732 // ::= <decimal digit> # when 1 <= Number <= 10
733 // ::= <hex digit>+ @ # when Number >= 10
734 //
735 // <number> ::= [?] <non-negative integer>
736
737 uint64_t Value = static_cast<uint64_t>(Number);
738 if (Number < 0) {
739 Value = -Value;
740 Out << '?';
741 }
742
743 if (Value == 0)
744 Out << "A@";
745 else if (Value >= 1 && Value <= 10)
746 Out << (Value - 1);
747 else {
748 // Numbers that are not encoded as decimal digits are represented as nibbles
749 // in the range of ASCII characters 'A' to 'P'.
750 // The number 0x123450 would be encoded as 'BCDEFA'
751 char EncodedNumberBuffer[sizeof(uint64_t) * 2];
752 MutableArrayRef<char> BufferRef(EncodedNumberBuffer);
753 MutableArrayRef<char>::reverse_iterator I = BufferRef.rbegin();
754 for (; Value != 0; Value >>= 4)
755 *I++ = 'A' + (Value & 0xf);
756 Out.write(I.base(), I - BufferRef.rbegin());
757 Out << '@';
758 }
759}
760
761static const TemplateDecl *
762isTemplate(const NamedDecl *ND, const TemplateArgumentList *&TemplateArgs) {
763 // Check if we have a function template.
764 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
765 if (const TemplateDecl *TD = FD->getPrimaryTemplate()) {
766 TemplateArgs = FD->getTemplateSpecializationArgs();
767 return TD;
768 }
769 }
770
771 // Check if we have a class template.
772 if (const ClassTemplateSpecializationDecl *Spec =
773 dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
774 TemplateArgs = &Spec->getTemplateArgs();
775 return Spec->getSpecializedTemplate();
776 }
777
778 // Check if we have a variable template.
779 if (const VarTemplateSpecializationDecl *Spec =
780 dyn_cast<VarTemplateSpecializationDecl>(ND)) {
781 TemplateArgs = &Spec->getTemplateArgs();
782 return Spec->getSpecializedTemplate();
783 }
784
785 return nullptr;
786}
787
788void MicrosoftCXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND,
789 DeclarationName Name) {
790 // <unqualified-name> ::= <operator-name>
791 // ::= <ctor-dtor-name>
792 // ::= <source-name>
793 // ::= <template-name>
794
795 // Check if we have a template.
796 const TemplateArgumentList *TemplateArgs = nullptr;
797 if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
798 // Function templates aren't considered for name back referencing. This
799 // makes sense since function templates aren't likely to occur multiple
800 // times in a symbol.
801 if (isa<FunctionTemplateDecl>(TD)) {
802 mangleTemplateInstantiationName(TD, *TemplateArgs);
803 Out << '@';
804 return;
805 }
806
807 // Here comes the tricky thing: if we need to mangle something like
808 // void foo(A::X<Y>, B::X<Y>),
809 // the X<Y> part is aliased. However, if you need to mangle
810 // void foo(A::X<A::Y>, A::X<B::Y>),
811 // the A::X<> part is not aliased.
812 // That is, from the mangler's perspective we have a structure like this:
813 // namespace[s] -> type[ -> template-parameters]
814 // but from the Clang perspective we have
815 // type [ -> template-parameters]
816 // \-> namespace[s]
817 // What we do is we create a new mangler, mangle the same type (without
818 // a namespace suffix) to a string using the extra mangler and then use
819 // the mangled type name as a key to check the mangling of different types
820 // for aliasing.
821
822 // It's important to key cache reads off ND, not TD -- the same TD can
823 // be used with different TemplateArgs, but ND uniquely identifies
824 // TD / TemplateArg pairs.
825 ArgBackRefMap::iterator Found = TemplateArgBackReferences.find(ND);
826 if (Found == TemplateArgBackReferences.end()) {
827
828 TemplateArgStringMap::iterator Found = TemplateArgStrings.find(ND);
829 if (Found == TemplateArgStrings.end()) {
830 // Mangle full template name into temporary buffer.
831 llvm::SmallString<64> TemplateMangling;
832 llvm::raw_svector_ostream Stream(TemplateMangling);
833 MicrosoftCXXNameMangler Extra(Context, Stream);
834 Extra.mangleTemplateInstantiationName(TD, *TemplateArgs);
835
836 // Use the string backref vector to possibly get a back reference.
837 mangleSourceName(TemplateMangling);
838
839 // Memoize back reference for this type if one exist, else memoize
840 // the mangling itself.
841 BackRefVec::iterator StringFound =
842 llvm::find(NameBackReferences, TemplateMangling);
843 if (StringFound != NameBackReferences.end()) {
844 TemplateArgBackReferences[ND] =
845 StringFound - NameBackReferences.begin();
846 } else {
847 TemplateArgStrings[ND] =
848 TemplateArgStringStorage.save(TemplateMangling.str());
849 }
850 } else {
851 Out << Found->second << '@'; // Outputs a StringRef.
852 }
853 } else {
854 Out << Found->second; // Outputs a back reference (an int).
855 }
856 return;
857 }
858
859 switch (Name.getNameKind()) {
860 case DeclarationName::Identifier: {
861 if (const IdentifierInfo *II = Name.getAsIdentifierInfo()) {
862 mangleSourceName(II->getName());
863 break;
864 }
865
866 // Otherwise, an anonymous entity. We must have a declaration.
867 assert(ND && "mangling empty name without declaration")((ND && "mangling empty name without declaration") ? static_cast
<void> (0) : __assert_fail ("ND && \"mangling empty name without declaration\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 867, __PRETTY_FUNCTION__))
;
868
869 if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
870 if (NS->isAnonymousNamespace()) {
871 Out << "?A0x" << Context.getAnonymousNamespaceHash() << '@';
872 break;
873 }
874 }
875
876 if (const DecompositionDecl *DD = dyn_cast<DecompositionDecl>(ND)) {
877 // Decomposition declarations are considered anonymous, and get
878 // numbered with a $S prefix.
879 llvm::SmallString<64> Name("$S");
880 // Get a unique id for the anonymous struct.
881 Name += llvm::utostr(Context.getAnonymousStructId(DD) + 1);
882 mangleSourceName(Name);
883 break;
884 }
885
886 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
887 // We must have an anonymous union or struct declaration.
888 const CXXRecordDecl *RD = VD->getType()->getAsCXXRecordDecl();
889 assert(RD && "expected variable decl to have a record type")((RD && "expected variable decl to have a record type"
) ? static_cast<void> (0) : __assert_fail ("RD && \"expected variable decl to have a record type\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 889, __PRETTY_FUNCTION__))
;
890 // Anonymous types with no tag or typedef get the name of their
891 // declarator mangled in. If they have no declarator, number them with
892 // a $S prefix.
893 llvm::SmallString<64> Name("$S");
894 // Get a unique id for the anonymous struct.
895 Name += llvm::utostr(Context.getAnonymousStructId(RD) + 1);
896 mangleSourceName(Name.str());
897 break;
898 }
899
900 if (const MSGuidDecl *GD = dyn_cast<MSGuidDecl>(ND)) {
901 // Mangle a GUID object as if it were a variable with the corresponding
902 // mangled name.
903 SmallString<sizeof("_GUID_12345678_1234_1234_1234_1234567890ab")> GUID;
904 llvm::raw_svector_ostream GUIDOS(GUID);
905 Context.mangleMSGuidDecl(GD, GUIDOS);
906 mangleSourceName(GUID);
907 break;
908 }
909
910 // We must have an anonymous struct.
911 const TagDecl *TD = cast<TagDecl>(ND);
912 if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) {
913 assert(TD->getDeclContext() == D->getDeclContext() &&((TD->getDeclContext() == D->getDeclContext() &&
"Typedef should not be in another decl context!") ? static_cast
<void> (0) : __assert_fail ("TD->getDeclContext() == D->getDeclContext() && \"Typedef should not be in another decl context!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 914, __PRETTY_FUNCTION__))
914 "Typedef should not be in another decl context!")((TD->getDeclContext() == D->getDeclContext() &&
"Typedef should not be in another decl context!") ? static_cast
<void> (0) : __assert_fail ("TD->getDeclContext() == D->getDeclContext() && \"Typedef should not be in another decl context!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 914, __PRETTY_FUNCTION__))
;
915 assert(D->getDeclName().getAsIdentifierInfo() &&((D->getDeclName().getAsIdentifierInfo() && "Typedef was not named!"
) ? static_cast<void> (0) : __assert_fail ("D->getDeclName().getAsIdentifierInfo() && \"Typedef was not named!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 916, __PRETTY_FUNCTION__))
916 "Typedef was not named!")((D->getDeclName().getAsIdentifierInfo() && "Typedef was not named!"
) ? static_cast<void> (0) : __assert_fail ("D->getDeclName().getAsIdentifierInfo() && \"Typedef was not named!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 916, __PRETTY_FUNCTION__))
;
917 mangleSourceName(D->getDeclName().getAsIdentifierInfo()->getName());
918 break;
919 }
920
921 if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) {
922 if (Record->isLambda()) {
923 llvm::SmallString<10> Name("<lambda_");
924
925 Decl *LambdaContextDecl = Record->getLambdaContextDecl();
926 unsigned LambdaManglingNumber = Record->getLambdaManglingNumber();
927 unsigned LambdaId;
928 const ParmVarDecl *Parm =
929 dyn_cast_or_null<ParmVarDecl>(LambdaContextDecl);
930 const FunctionDecl *Func =
931 Parm ? dyn_cast<FunctionDecl>(Parm->getDeclContext()) : nullptr;
932
933 if (Func) {
934 unsigned DefaultArgNo =
935 Func->getNumParams() - Parm->getFunctionScopeIndex();
936 Name += llvm::utostr(DefaultArgNo);
937 Name += "_";
938 }
939
940 if (LambdaManglingNumber)
941 LambdaId = LambdaManglingNumber;
942 else
943 LambdaId = Context.getLambdaId(Record);
944
945 Name += llvm::utostr(LambdaId);
946 Name += ">";
947
948 mangleSourceName(Name);
949
950 // If the context is a variable or a class member and not a parameter,
951 // it is encoded in a qualified name.
952 if (LambdaManglingNumber && LambdaContextDecl) {
953 if ((isa<VarDecl>(LambdaContextDecl) ||
954 isa<FieldDecl>(LambdaContextDecl)) &&
955 !isa<ParmVarDecl>(LambdaContextDecl)) {
956 mangleUnqualifiedName(cast<NamedDecl>(LambdaContextDecl));
957 }
958 }
959 break;
960 }
961 }
962
963 llvm::SmallString<64> Name;
964 if (DeclaratorDecl *DD =
965 Context.getASTContext().getDeclaratorForUnnamedTagDecl(TD)) {
966 // Anonymous types without a name for linkage purposes have their
967 // declarator mangled in if they have one.
968 Name += "<unnamed-type-";
969 Name += DD->getName();
970 } else if (TypedefNameDecl *TND =
971 Context.getASTContext().getTypedefNameForUnnamedTagDecl(
972 TD)) {
973 // Anonymous types without a name for linkage purposes have their
974 // associate typedef mangled in if they have one.
975 Name += "<unnamed-type-";
976 Name += TND->getName();
977 } else if (isa<EnumDecl>(TD) &&
978 cast<EnumDecl>(TD)->enumerator_begin() !=
979 cast<EnumDecl>(TD)->enumerator_end()) {
980 // Anonymous non-empty enums mangle in the first enumerator.
981 auto *ED = cast<EnumDecl>(TD);
982 Name += "<unnamed-enum-";
983 Name += ED->enumerator_begin()->getName();
984 } else {
985 // Otherwise, number the types using a $S prefix.
986 Name += "<unnamed-type-$S";
987 Name += llvm::utostr(Context.getAnonymousStructId(TD) + 1);
988 }
989 Name += ">";
990 mangleSourceName(Name.str());
991 break;
992 }
993
994 case DeclarationName::ObjCZeroArgSelector:
995 case DeclarationName::ObjCOneArgSelector:
996 case DeclarationName::ObjCMultiArgSelector: {
997 // This is reachable only when constructing an outlined SEH finally
998 // block. Nothing depends on this mangling and it's used only with
999 // functinos with internal linkage.
1000 llvm::SmallString<64> Name;
1001 mangleSourceName(Name.str());
1002 break;
1003 }
1004
1005 case DeclarationName::CXXConstructorName:
1006 if (isStructorDecl(ND)) {
1007 if (StructorType == Ctor_CopyingClosure) {
1008 Out << "?_O";
1009 return;
1010 }
1011 if (StructorType == Ctor_DefaultClosure) {
1012 Out << "?_F";
1013 return;
1014 }
1015 }
1016 Out << "?0";
1017 return;
1018
1019 case DeclarationName::CXXDestructorName:
1020 if (isStructorDecl(ND))
1021 // If the named decl is the C++ destructor we're mangling,
1022 // use the type we were given.
1023 mangleCXXDtorType(static_cast<CXXDtorType>(StructorType));
1024 else
1025 // Otherwise, use the base destructor name. This is relevant if a
1026 // class with a destructor is declared within a destructor.
1027 mangleCXXDtorType(Dtor_Base);
1028 break;
1029
1030 case DeclarationName::CXXConversionFunctionName:
1031 // <operator-name> ::= ?B # (cast)
1032 // The target type is encoded as the return type.
1033 Out << "?B";
1034 break;
1035
1036 case DeclarationName::CXXOperatorName:
1037 mangleOperatorName(Name.getCXXOverloadedOperator(), ND->getLocation());
1038 break;
1039
1040 case DeclarationName::CXXLiteralOperatorName: {
1041 Out << "?__K";
1042 mangleSourceName(Name.getCXXLiteralIdentifier()->getName());
1043 break;
1044 }
1045
1046 case DeclarationName::CXXDeductionGuideName:
1047 llvm_unreachable("Can't mangle a deduction guide name!")::llvm::llvm_unreachable_internal("Can't mangle a deduction guide name!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1047)
;
1048
1049 case DeclarationName::CXXUsingDirective:
1050 llvm_unreachable("Can't mangle a using directive name!")::llvm::llvm_unreachable_internal("Can't mangle a using directive name!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1050)
;
1051 }
1052}
1053
1054// <postfix> ::= <unqualified-name> [<postfix>]
1055// ::= <substitution> [<postfix>]
1056void MicrosoftCXXNameMangler::mangleNestedName(const NamedDecl *ND) {
1057 const DeclContext *DC = getEffectiveDeclContext(ND);
1058 while (!DC->isTranslationUnit()) {
1059 if (isa<TagDecl>(ND) || isa<VarDecl>(ND)) {
1060 unsigned Disc;
1061 if (Context.getNextDiscriminator(ND, Disc)) {
1062 Out << '?';
1063 mangleNumber(Disc);
1064 Out << '?';
1065 }
1066 }
1067
1068 if (const BlockDecl *BD = dyn_cast<BlockDecl>(DC)) {
1069 auto Discriminate =
1070 [](StringRef Name, const unsigned Discriminator,
1071 const unsigned ParameterDiscriminator) -> std::string {
1072 std::string Buffer;
1073 llvm::raw_string_ostream Stream(Buffer);
1074 Stream << Name;
1075 if (Discriminator)
1076 Stream << '_' << Discriminator;
1077 if (ParameterDiscriminator)
1078 Stream << '_' << ParameterDiscriminator;
1079 return Stream.str();
1080 };
1081
1082 unsigned Discriminator = BD->getBlockManglingNumber();
1083 if (!Discriminator)
1084 Discriminator = Context.getBlockId(BD, /*Local=*/false);
1085
1086 // Mangle the parameter position as a discriminator to deal with unnamed
1087 // parameters. Rather than mangling the unqualified parameter name,
1088 // always use the position to give a uniform mangling.
1089 unsigned ParameterDiscriminator = 0;
1090 if (const auto *MC = BD->getBlockManglingContextDecl())
1091 if (const auto *P = dyn_cast<ParmVarDecl>(MC))
1092 if (const auto *F = dyn_cast<FunctionDecl>(P->getDeclContext()))
1093 ParameterDiscriminator =
1094 F->getNumParams() - P->getFunctionScopeIndex();
1095
1096 DC = getEffectiveDeclContext(BD);
1097
1098 Out << '?';
1099 mangleSourceName(Discriminate("_block_invoke", Discriminator,
1100 ParameterDiscriminator));
1101 // If we have a block mangling context, encode that now. This allows us
1102 // to discriminate between named static data initializers in the same
1103 // scope. This is handled differently from parameters, which use
1104 // positions to discriminate between multiple instances.
1105 if (const auto *MC = BD->getBlockManglingContextDecl())
1106 if (!isa<ParmVarDecl>(MC))
1107 if (const auto *ND = dyn_cast<NamedDecl>(MC))
1108 mangleUnqualifiedName(ND);
1109 // MS ABI and Itanium manglings are in inverted scopes. In the case of a
1110 // RecordDecl, mangle the entire scope hierarchy at this point rather than
1111 // just the unqualified name to get the ordering correct.
1112 if (const auto *RD = dyn_cast<RecordDecl>(DC))
1113 mangleName(RD);
1114 else
1115 Out << '@';
1116 // void __cdecl
1117 Out << "YAX";
1118 // struct __block_literal *
1119 Out << 'P';
1120 // __ptr64
1121 if (PointersAre64Bit)
1122 Out << 'E';
1123 Out << 'A';
1124 mangleArtificialTagType(TTK_Struct,
1125 Discriminate("__block_literal", Discriminator,
1126 ParameterDiscriminator));
1127 Out << "@Z";
1128
1129 // If the effective context was a Record, we have fully mangled the
1130 // qualified name and do not need to continue.
1131 if (isa<RecordDecl>(DC))
1132 break;
1133 continue;
1134 } else if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) {
1135 mangleObjCMethodName(Method);
1136 } else if (isa<NamedDecl>(DC)) {
1137 ND = cast<NamedDecl>(DC);
1138 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
1139 mangle(FD, "?");
1140 break;
1141 } else {
1142 mangleUnqualifiedName(ND);
1143 // Lambdas in default arguments conceptually belong to the function the
1144 // parameter corresponds to.
1145 if (const auto *LDADC = getLambdaDefaultArgumentDeclContext(ND)) {
1146 DC = LDADC;
1147 continue;
1148 }
1149 }
1150 }
1151 DC = DC->getParent();
1152 }
1153}
1154
1155void MicrosoftCXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
1156 // Microsoft uses the names on the case labels for these dtor variants. Clang
1157 // uses the Itanium terminology internally. Everything in this ABI delegates
1158 // towards the base dtor.
1159 switch (T) {
1160 // <operator-name> ::= ?1 # destructor
1161 case Dtor_Base: Out << "?1"; return;
1162 // <operator-name> ::= ?_D # vbase destructor
1163 case Dtor_Complete: Out << "?_D"; return;
1164 // <operator-name> ::= ?_G # scalar deleting destructor
1165 case Dtor_Deleting: Out << "?_G"; return;
1166 // <operator-name> ::= ?_E # vector deleting destructor
1167 // FIXME: Add a vector deleting dtor type. It goes in the vtable, so we need
1168 // it.
1169 case Dtor_Comdat:
1170 llvm_unreachable("not expecting a COMDAT")::llvm::llvm_unreachable_internal("not expecting a COMDAT", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1170)
;
1171 }
1172 llvm_unreachable("Unsupported dtor type?")::llvm::llvm_unreachable_internal("Unsupported dtor type?", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1172)
;
1173}
1174
1175void MicrosoftCXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO,
1176 SourceLocation Loc) {
1177 switch (OO) {
1178 // ?0 # constructor
1179 // ?1 # destructor
1180 // <operator-name> ::= ?2 # new
1181 case OO_New: Out << "?2"; break;
1182 // <operator-name> ::= ?3 # delete
1183 case OO_Delete: Out << "?3"; break;
1184 // <operator-name> ::= ?4 # =
1185 case OO_Equal: Out << "?4"; break;
1186 // <operator-name> ::= ?5 # >>
1187 case OO_GreaterGreater: Out << "?5"; break;
1188 // <operator-name> ::= ?6 # <<
1189 case OO_LessLess: Out << "?6"; break;
1190 // <operator-name> ::= ?7 # !
1191 case OO_Exclaim: Out << "?7"; break;
1192 // <operator-name> ::= ?8 # ==
1193 case OO_EqualEqual: Out << "?8"; break;
1194 // <operator-name> ::= ?9 # !=
1195 case OO_ExclaimEqual: Out << "?9"; break;
1196 // <operator-name> ::= ?A # []
1197 case OO_Subscript: Out << "?A"; break;
1198 // ?B # conversion
1199 // <operator-name> ::= ?C # ->
1200 case OO_Arrow: Out << "?C"; break;
1201 // <operator-name> ::= ?D # *
1202 case OO_Star: Out << "?D"; break;
1203 // <operator-name> ::= ?E # ++
1204 case OO_PlusPlus: Out << "?E"; break;
1205 // <operator-name> ::= ?F # --
1206 case OO_MinusMinus: Out << "?F"; break;
1207 // <operator-name> ::= ?G # -
1208 case OO_Minus: Out << "?G"; break;
1209 // <operator-name> ::= ?H # +
1210 case OO_Plus: Out << "?H"; break;
1211 // <operator-name> ::= ?I # &
1212 case OO_Amp: Out << "?I"; break;
1213 // <operator-name> ::= ?J # ->*
1214 case OO_ArrowStar: Out << "?J"; break;
1215 // <operator-name> ::= ?K # /
1216 case OO_Slash: Out << "?K"; break;
1217 // <operator-name> ::= ?L # %
1218 case OO_Percent: Out << "?L"; break;
1219 // <operator-name> ::= ?M # <
1220 case OO_Less: Out << "?M"; break;
1221 // <operator-name> ::= ?N # <=
1222 case OO_LessEqual: Out << "?N"; break;
1223 // <operator-name> ::= ?O # >
1224 case OO_Greater: Out << "?O"; break;
1225 // <operator-name> ::= ?P # >=
1226 case OO_GreaterEqual: Out << "?P"; break;
1227 // <operator-name> ::= ?Q # ,
1228 case OO_Comma: Out << "?Q"; break;
1229 // <operator-name> ::= ?R # ()
1230 case OO_Call: Out << "?R"; break;
1231 // <operator-name> ::= ?S # ~
1232 case OO_Tilde: Out << "?S"; break;
1233 // <operator-name> ::= ?T # ^
1234 case OO_Caret: Out << "?T"; break;
1235 // <operator-name> ::= ?U # |
1236 case OO_Pipe: Out << "?U"; break;
1237 // <operator-name> ::= ?V # &&
1238 case OO_AmpAmp: Out << "?V"; break;
1239 // <operator-name> ::= ?W # ||
1240 case OO_PipePipe: Out << "?W"; break;
1241 // <operator-name> ::= ?X # *=
1242 case OO_StarEqual: Out << "?X"; break;
1243 // <operator-name> ::= ?Y # +=
1244 case OO_PlusEqual: Out << "?Y"; break;
1245 // <operator-name> ::= ?Z # -=
1246 case OO_MinusEqual: Out << "?Z"; break;
1247 // <operator-name> ::= ?_0 # /=
1248 case OO_SlashEqual: Out << "?_0"; break;
1249 // <operator-name> ::= ?_1 # %=
1250 case OO_PercentEqual: Out << "?_1"; break;
1251 // <operator-name> ::= ?_2 # >>=
1252 case OO_GreaterGreaterEqual: Out << "?_2"; break;
1253 // <operator-name> ::= ?_3 # <<=
1254 case OO_LessLessEqual: Out << "?_3"; break;
1255 // <operator-name> ::= ?_4 # &=
1256 case OO_AmpEqual: Out << "?_4"; break;
1257 // <operator-name> ::= ?_5 # |=
1258 case OO_PipeEqual: Out << "?_5"; break;
1259 // <operator-name> ::= ?_6 # ^=
1260 case OO_CaretEqual: Out << "?_6"; break;
1261 // ?_7 # vftable
1262 // ?_8 # vbtable
1263 // ?_9 # vcall
1264 // ?_A # typeof
1265 // ?_B # local static guard
1266 // ?_C # string
1267 // ?_D # vbase destructor
1268 // ?_E # vector deleting destructor
1269 // ?_F # default constructor closure
1270 // ?_G # scalar deleting destructor
1271 // ?_H # vector constructor iterator
1272 // ?_I # vector destructor iterator
1273 // ?_J # vector vbase constructor iterator
1274 // ?_K # virtual displacement map
1275 // ?_L # eh vector constructor iterator
1276 // ?_M # eh vector destructor iterator
1277 // ?_N # eh vector vbase constructor iterator
1278 // ?_O # copy constructor closure
1279 // ?_P<name> # udt returning <name>
1280 // ?_Q # <unknown>
1281 // ?_R0 # RTTI Type Descriptor
1282 // ?_R1 # RTTI Base Class Descriptor at (a,b,c,d)
1283 // ?_R2 # RTTI Base Class Array
1284 // ?_R3 # RTTI Class Hierarchy Descriptor
1285 // ?_R4 # RTTI Complete Object Locator
1286 // ?_S # local vftable
1287 // ?_T # local vftable constructor closure
1288 // <operator-name> ::= ?_U # new[]
1289 case OO_Array_New: Out << "?_U"; break;
1290 // <operator-name> ::= ?_V # delete[]
1291 case OO_Array_Delete: Out << "?_V"; break;
1292 // <operator-name> ::= ?__L # co_await
1293 case OO_Coawait: Out << "?__L"; break;
1294 // <operator-name> ::= ?__M # <=>
1295 case OO_Spaceship: Out << "?__M"; break;
1296
1297 case OO_Conditional: {
1298 DiagnosticsEngine &Diags = Context.getDiags();
1299 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
1300 "cannot mangle this conditional operator yet");
1301 Diags.Report(Loc, DiagID);
1302 break;
1303 }
1304
1305 case OO_None:
1306 case NUM_OVERLOADED_OPERATORS:
1307 llvm_unreachable("Not an overloaded operator")::llvm::llvm_unreachable_internal("Not an overloaded operator"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1307)
;
1308 }
1309}
1310
1311void MicrosoftCXXNameMangler::mangleSourceName(StringRef Name) {
1312 // <source name> ::= <identifier> @
1313 BackRefVec::iterator Found = llvm::find(NameBackReferences, Name);
1314 if (Found == NameBackReferences.end()) {
1315 if (NameBackReferences.size() < 10)
1316 NameBackReferences.push_back(std::string(Name));
1317 Out << Name << '@';
1318 } else {
1319 Out << (Found - NameBackReferences.begin());
1320 }
1321}
1322
1323void MicrosoftCXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) {
1324 Context.mangleObjCMethodName(MD, Out);
1325}
1326
1327void MicrosoftCXXNameMangler::mangleTemplateInstantiationName(
1328 const TemplateDecl *TD, const TemplateArgumentList &TemplateArgs) {
1329 // <template-name> ::= <unscoped-template-name> <template-args>
1330 // ::= <substitution>
1331 // Always start with the unqualified name.
1332
1333 // Templates have their own context for back references.
1334 ArgBackRefMap OuterFunArgsContext;
1335 ArgBackRefMap OuterTemplateArgsContext;
1336 BackRefVec OuterTemplateContext;
1337 PassObjectSizeArgsSet OuterPassObjectSizeArgs;
1338 NameBackReferences.swap(OuterTemplateContext);
1339 FunArgBackReferences.swap(OuterFunArgsContext);
1340 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
1341 PassObjectSizeArgs.swap(OuterPassObjectSizeArgs);
1342
1343 mangleUnscopedTemplateName(TD);
1344 mangleTemplateArgs(TD, TemplateArgs);
1345
1346 // Restore the previous back reference contexts.
1347 NameBackReferences.swap(OuterTemplateContext);
1348 FunArgBackReferences.swap(OuterFunArgsContext);
1349 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
1350 PassObjectSizeArgs.swap(OuterPassObjectSizeArgs);
1351}
1352
1353void
1354MicrosoftCXXNameMangler::mangleUnscopedTemplateName(const TemplateDecl *TD) {
1355 // <unscoped-template-name> ::= ?$ <unqualified-name>
1356 Out << "?$";
1357 mangleUnqualifiedName(TD);
1358}
1359
1360void MicrosoftCXXNameMangler::mangleIntegerLiteral(const llvm::APSInt &Value,
1361 bool IsBoolean) {
1362 // <integer-literal> ::= $0 <number>
1363 Out << "$0";
1364 // Make sure booleans are encoded as 0/1.
1365 if (IsBoolean && Value.getBoolValue())
1366 mangleNumber(1);
1367 else if (Value.isSigned())
1368 mangleNumber(Value.getSExtValue());
1369 else
1370 mangleNumber(Value.getZExtValue());
1371}
1372
1373void MicrosoftCXXNameMangler::mangleExpression(const Expr *E) {
1374 // See if this is a constant expression.
1375 if (Optional<llvm::APSInt> Value =
1376 E->getIntegerConstantExpr(Context.getASTContext())) {
1377 mangleIntegerLiteral(*Value, E->getType()->isBooleanType());
1378 return;
1379 }
1380
1381 // As bad as this diagnostic is, it's better than crashing.
1382 DiagnosticsEngine &Diags = Context.getDiags();
1383 unsigned DiagID = Diags.getCustomDiagID(
1384 DiagnosticsEngine::Error, "cannot yet mangle expression type %0");
1385 Diags.Report(E->getExprLoc(), DiagID) << E->getStmtClassName()
1386 << E->getSourceRange();
1387}
1388
1389void MicrosoftCXXNameMangler::mangleTemplateArgs(
1390 const TemplateDecl *TD, const TemplateArgumentList &TemplateArgs) {
1391 // <template-args> ::= <template-arg>+
1392 const TemplateParameterList *TPL = TD->getTemplateParameters();
1393 assert(TPL->size() == TemplateArgs.size() &&((TPL->size() == TemplateArgs.size() && "size mismatch between args and parms!"
) ? static_cast<void> (0) : __assert_fail ("TPL->size() == TemplateArgs.size() && \"size mismatch between args and parms!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1394, __PRETTY_FUNCTION__))
1394 "size mismatch between args and parms!")((TPL->size() == TemplateArgs.size() && "size mismatch between args and parms!"
) ? static_cast<void> (0) : __assert_fail ("TPL->size() == TemplateArgs.size() && \"size mismatch between args and parms!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1394, __PRETTY_FUNCTION__))
;
1395
1396 for (size_t i = 0; i < TemplateArgs.size(); ++i) {
1397 const TemplateArgument &TA = TemplateArgs[i];
1398
1399 // Separate consecutive packs by $$Z.
1400 if (i > 0 && TA.getKind() == TemplateArgument::Pack &&
1401 TemplateArgs[i - 1].getKind() == TemplateArgument::Pack)
1402 Out << "$$Z";
1403
1404 mangleTemplateArg(TD, TA, TPL->getParam(i));
1405 }
1406}
1407
1408void MicrosoftCXXNameMangler::mangleTemplateArg(const TemplateDecl *TD,
1409 const TemplateArgument &TA,
1410 const NamedDecl *Parm) {
1411 // <template-arg> ::= <type>
1412 // ::= <integer-literal>
1413 // ::= <member-data-pointer>
1414 // ::= <member-function-pointer>
1415 // ::= $E? <name> <type-encoding>
1416 // ::= $1? <name> <type-encoding>
1417 // ::= $0A@
1418 // ::= <template-args>
1419
1420 switch (TA.getKind()) {
1421 case TemplateArgument::Null:
1422 llvm_unreachable("Can't mangle null template arguments!")::llvm::llvm_unreachable_internal("Can't mangle null template arguments!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1422)
;
1423 case TemplateArgument::TemplateExpansion:
1424 llvm_unreachable("Can't mangle template expansion arguments!")::llvm::llvm_unreachable_internal("Can't mangle template expansion arguments!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1424)
;
1425 case TemplateArgument::Type: {
1426 QualType T = TA.getAsType();
1427 mangleType(T, SourceRange(), QMM_Escape);
1428 break;
1429 }
1430 case TemplateArgument::Declaration: {
1431 const NamedDecl *ND = TA.getAsDecl();
1432 if (isa<FieldDecl>(ND) || isa<IndirectFieldDecl>(ND)) {
1433 mangleMemberDataPointer(cast<CXXRecordDecl>(ND->getDeclContext())
1434 ->getMostRecentNonInjectedDecl(),
1435 cast<ValueDecl>(ND));
1436 } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
1437 const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD);
1438 if (MD && MD->isInstance()) {
1439 mangleMemberFunctionPointer(
1440 MD->getParent()->getMostRecentNonInjectedDecl(), MD);
1441 } else {
1442 Out << "$1?";
1443 mangleName(FD);
1444 mangleFunctionEncoding(FD, /*ShouldMangle=*/true);
1445 }
1446 } else {
1447 mangle(ND, TA.getParamTypeForDecl()->isReferenceType() ? "$E?" : "$1?");
1448 }
1449 break;
1450 }
1451 case TemplateArgument::Integral:
1452 mangleIntegerLiteral(TA.getAsIntegral(),
1453 TA.getIntegralType()->isBooleanType());
1454 break;
1455 case TemplateArgument::NullPtr: {
1456 QualType T = TA.getNullPtrType();
1457 if (const MemberPointerType *MPT = T->getAs<MemberPointerType>()) {
1458 const CXXRecordDecl *RD = MPT->getMostRecentCXXRecordDecl();
1459 if (MPT->isMemberFunctionPointerType() &&
1460 !isa<FunctionTemplateDecl>(TD)) {
1461 mangleMemberFunctionPointer(RD, nullptr);
1462 return;
1463 }
1464 if (MPT->isMemberDataPointer()) {
1465 if (!isa<FunctionTemplateDecl>(TD)) {
1466 mangleMemberDataPointer(RD, nullptr);
1467 return;
1468 }
1469 // nullptr data pointers are always represented with a single field
1470 // which is initialized with either 0 or -1. Why -1? Well, we need to
1471 // distinguish the case where the data member is at offset zero in the
1472 // record.
1473 // However, we are free to use 0 *if* we would use multiple fields for
1474 // non-nullptr member pointers.
1475 if (!RD->nullFieldOffsetIsZero()) {
1476 mangleIntegerLiteral(llvm::APSInt::get(-1), /*IsBoolean=*/false);
1477 return;
1478 }
1479 }
1480 }
1481 mangleIntegerLiteral(llvm::APSInt::getUnsigned(0), /*IsBoolean=*/false);
1482 break;
1483 }
1484 case TemplateArgument::Expression:
1485 mangleExpression(TA.getAsExpr());
1486 break;
1487 case TemplateArgument::Pack: {
1488 ArrayRef<TemplateArgument> TemplateArgs = TA.getPackAsArray();
1489 if (TemplateArgs.empty()) {
1490 if (isa<TemplateTypeParmDecl>(Parm) ||
1491 isa<TemplateTemplateParmDecl>(Parm))
1492 // MSVC 2015 changed the mangling for empty expanded template packs,
1493 // use the old mangling for link compatibility for old versions.
1494 Out << (Context.getASTContext().getLangOpts().isCompatibleWithMSVC(
1495 LangOptions::MSVC2015)
1496 ? "$$V"
1497 : "$$$V");
1498 else if (isa<NonTypeTemplateParmDecl>(Parm))
1499 Out << "$S";
1500 else
1501 llvm_unreachable("unexpected template parameter decl!")::llvm::llvm_unreachable_internal("unexpected template parameter decl!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1501)
;
1502 } else {
1503 for (const TemplateArgument &PA : TemplateArgs)
1504 mangleTemplateArg(TD, PA, Parm);
1505 }
1506 break;
1507 }
1508 case TemplateArgument::Template: {
1509 const NamedDecl *ND =
1510 TA.getAsTemplate().getAsTemplateDecl()->getTemplatedDecl();
1511 if (const auto *TD = dyn_cast<TagDecl>(ND)) {
1512 mangleType(TD);
1513 } else if (isa<TypeAliasDecl>(ND)) {
1514 Out << "$$Y";
1515 mangleName(ND);
1516 } else {
1517 llvm_unreachable("unexpected template template NamedDecl!")::llvm::llvm_unreachable_internal("unexpected template template NamedDecl!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1517)
;
1518 }
1519 break;
1520 }
1521 }
1522}
1523
1524void MicrosoftCXXNameMangler::mangleObjCProtocol(const ObjCProtocolDecl *PD) {
1525 llvm::SmallString<64> TemplateMangling;
1526 llvm::raw_svector_ostream Stream(TemplateMangling);
1527 MicrosoftCXXNameMangler Extra(Context, Stream);
1528
1529 Stream << "?$";
1530 Extra.mangleSourceName("Protocol");
1531 Extra.mangleArtificialTagType(TTK_Struct, PD->getName());
1532
1533 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__ObjC"});
1534}
1535
1536void MicrosoftCXXNameMangler::mangleObjCLifetime(const QualType Type,
1537 Qualifiers Quals,
1538 SourceRange Range) {
1539 llvm::SmallString<64> TemplateMangling;
1540 llvm::raw_svector_ostream Stream(TemplateMangling);
1541 MicrosoftCXXNameMangler Extra(Context, Stream);
1542
1543 Stream << "?$";
1544 switch (Quals.getObjCLifetime()) {
1545 case Qualifiers::OCL_None:
1546 case Qualifiers::OCL_ExplicitNone:
1547 break;
1548 case Qualifiers::OCL_Autoreleasing:
1549 Extra.mangleSourceName("Autoreleasing");
1550 break;
1551 case Qualifiers::OCL_Strong:
1552 Extra.mangleSourceName("Strong");
1553 break;
1554 case Qualifiers::OCL_Weak:
1555 Extra.mangleSourceName("Weak");
1556 break;
1557 }
1558 Extra.manglePointerCVQualifiers(Quals);
1559 Extra.manglePointerExtQualifiers(Quals, Type);
1560 Extra.mangleType(Type, Range);
1561
1562 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__ObjC"});
1563}
1564
1565void MicrosoftCXXNameMangler::mangleObjCKindOfType(const ObjCObjectType *T,
1566 Qualifiers Quals,
1567 SourceRange Range) {
1568 llvm::SmallString<64> TemplateMangling;
1569 llvm::raw_svector_ostream Stream(TemplateMangling);
1570 MicrosoftCXXNameMangler Extra(Context, Stream);
1571
1572 Stream << "?$";
1573 Extra.mangleSourceName("KindOf");
1574 Extra.mangleType(QualType(T, 0)
25
Assuming the object is not a 'ObjCObjectType'
26
Passing null pointer value via 1st parameter 'T'
27
Calling 'MicrosoftCXXNameMangler::mangleType'
1575 .stripObjCKindOfType(getASTContext())
1576 ->getAs<ObjCObjectType>(),
1577 Quals, Range);
1578
1579 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__ObjC"});
1580}
1581
1582void MicrosoftCXXNameMangler::mangleQualifiers(Qualifiers Quals,
1583 bool IsMember) {
1584 // <cvr-qualifiers> ::= [E] [F] [I] <base-cvr-qualifiers>
1585 // 'E' means __ptr64 (32-bit only); 'F' means __unaligned (32/64-bit only);
1586 // 'I' means __restrict (32/64-bit).
1587 // Note that the MSVC __restrict keyword isn't the same as the C99 restrict
1588 // keyword!
1589 // <base-cvr-qualifiers> ::= A # near
1590 // ::= B # near const
1591 // ::= C # near volatile
1592 // ::= D # near const volatile
1593 // ::= E # far (16-bit)
1594 // ::= F # far const (16-bit)
1595 // ::= G # far volatile (16-bit)
1596 // ::= H # far const volatile (16-bit)
1597 // ::= I # huge (16-bit)
1598 // ::= J # huge const (16-bit)
1599 // ::= K # huge volatile (16-bit)
1600 // ::= L # huge const volatile (16-bit)
1601 // ::= M <basis> # based
1602 // ::= N <basis> # based const
1603 // ::= O <basis> # based volatile
1604 // ::= P <basis> # based const volatile
1605 // ::= Q # near member
1606 // ::= R # near const member
1607 // ::= S # near volatile member
1608 // ::= T # near const volatile member
1609 // ::= U # far member (16-bit)
1610 // ::= V # far const member (16-bit)
1611 // ::= W # far volatile member (16-bit)
1612 // ::= X # far const volatile member (16-bit)
1613 // ::= Y # huge member (16-bit)
1614 // ::= Z # huge const member (16-bit)
1615 // ::= 0 # huge volatile member (16-bit)
1616 // ::= 1 # huge const volatile member (16-bit)
1617 // ::= 2 <basis> # based member
1618 // ::= 3 <basis> # based const member
1619 // ::= 4 <basis> # based volatile member
1620 // ::= 5 <basis> # based const volatile member
1621 // ::= 6 # near function (pointers only)
1622 // ::= 7 # far function (pointers only)
1623 // ::= 8 # near method (pointers only)
1624 // ::= 9 # far method (pointers only)
1625 // ::= _A <basis> # based function (pointers only)
1626 // ::= _B <basis> # based function (far?) (pointers only)
1627 // ::= _C <basis> # based method (pointers only)
1628 // ::= _D <basis> # based method (far?) (pointers only)
1629 // ::= _E # block (Clang)
1630 // <basis> ::= 0 # __based(void)
1631 // ::= 1 # __based(segment)?
1632 // ::= 2 <name> # __based(name)
1633 // ::= 3 # ?
1634 // ::= 4 # ?
1635 // ::= 5 # not really based
1636 bool HasConst = Quals.hasConst(),
1637 HasVolatile = Quals.hasVolatile();
1638
1639 if (!IsMember) {
1640 if (HasConst && HasVolatile) {
1641 Out << 'D';
1642 } else if (HasVolatile) {
1643 Out << 'C';
1644 } else if (HasConst) {
1645 Out << 'B';
1646 } else {
1647 Out << 'A';
1648 }
1649 } else {
1650 if (HasConst && HasVolatile) {
1651 Out << 'T';
1652 } else if (HasVolatile) {
1653 Out << 'S';
1654 } else if (HasConst) {
1655 Out << 'R';
1656 } else {
1657 Out << 'Q';
1658 }
1659 }
1660
1661 // FIXME: For now, just drop all extension qualifiers on the floor.
1662}
1663
1664void
1665MicrosoftCXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) {
1666 // <ref-qualifier> ::= G # lvalue reference
1667 // ::= H # rvalue-reference
1668 switch (RefQualifier) {
1669 case RQ_None:
1670 break;
1671
1672 case RQ_LValue:
1673 Out << 'G';
1674 break;
1675
1676 case RQ_RValue:
1677 Out << 'H';
1678 break;
1679 }
1680}
1681
1682void MicrosoftCXXNameMangler::manglePointerExtQualifiers(Qualifiers Quals,
1683 QualType PointeeType) {
1684 // Check if this is a default 64-bit pointer or has __ptr64 qualifier.
1685 bool is64Bit = PointeeType.isNull() ? PointersAre64Bit :
1686 is64BitPointer(PointeeType.getQualifiers());
1687 if (is64Bit && (PointeeType.isNull() || !PointeeType->isFunctionType()))
1688 Out << 'E';
1689
1690 if (Quals.hasRestrict())
1691 Out << 'I';
1692
1693 if (Quals.hasUnaligned() ||
1694 (!PointeeType.isNull() && PointeeType.getLocalQualifiers().hasUnaligned()))
1695 Out << 'F';
1696}
1697
1698void MicrosoftCXXNameMangler::manglePointerCVQualifiers(Qualifiers Quals) {
1699 // <pointer-cv-qualifiers> ::= P # no qualifiers
1700 // ::= Q # const
1701 // ::= R # volatile
1702 // ::= S # const volatile
1703 bool HasConst = Quals.hasConst(),
1704 HasVolatile = Quals.hasVolatile();
1705
1706 if (HasConst && HasVolatile) {
1707 Out << 'S';
1708 } else if (HasVolatile) {
1709 Out << 'R';
1710 } else if (HasConst) {
1711 Out << 'Q';
1712 } else {
1713 Out << 'P';
1714 }
1715}
1716
1717void MicrosoftCXXNameMangler::mangleFunctionArgumentType(QualType T,
1718 SourceRange Range) {
1719 // MSVC will backreference two canonically equivalent types that have slightly
1720 // different manglings when mangled alone.
1721
1722 // Decayed types do not match up with non-decayed versions of the same type.
1723 //
1724 // e.g.
1725 // void (*x)(void) will not form a backreference with void x(void)
1726 void *TypePtr;
1727 if (const auto *DT = T->getAs<DecayedType>()) {
1728 QualType OriginalType = DT->getOriginalType();
1729 // All decayed ArrayTypes should be treated identically; as-if they were
1730 // a decayed IncompleteArrayType.
1731 if (const auto *AT = getASTContext().getAsArrayType(OriginalType))
1732 OriginalType = getASTContext().getIncompleteArrayType(
1733 AT->getElementType(), AT->getSizeModifier(),
1734 AT->getIndexTypeCVRQualifiers());
1735
1736 TypePtr = OriginalType.getCanonicalType().getAsOpaquePtr();
1737 // If the original parameter was textually written as an array,
1738 // instead treat the decayed parameter like it's const.
1739 //
1740 // e.g.
1741 // int [] -> int * const
1742 if (OriginalType->isArrayType())
1743 T = T.withConst();
1744 } else {
1745 TypePtr = T.getCanonicalType().getAsOpaquePtr();
1746 }
1747
1748 ArgBackRefMap::iterator Found = FunArgBackReferences.find(TypePtr);
1749
1750 if (Found == FunArgBackReferences.end()) {
1751 size_t OutSizeBefore = Out.tell();
1752
1753 mangleType(T, Range, QMM_Drop);
1754
1755 // See if it's worth creating a back reference.
1756 // Only types longer than 1 character are considered
1757 // and only 10 back references slots are available:
1758 bool LongerThanOneChar = (Out.tell() - OutSizeBefore > 1);
1759 if (LongerThanOneChar && FunArgBackReferences.size() < 10) {
1760 size_t Size = FunArgBackReferences.size();
1761 FunArgBackReferences[TypePtr] = Size;
1762 }
1763 } else {
1764 Out << Found->second;
1765 }
1766}
1767
1768void MicrosoftCXXNameMangler::manglePassObjectSizeArg(
1769 const PassObjectSizeAttr *POSA) {
1770 int Type = POSA->getType();
1771 bool Dynamic = POSA->isDynamic();
1772
1773 auto Iter = PassObjectSizeArgs.insert({Type, Dynamic}).first;
1774 auto *TypePtr = (const void *)&*Iter;
1775 ArgBackRefMap::iterator Found = FunArgBackReferences.find(TypePtr);
1776
1777 if (Found == FunArgBackReferences.end()) {
1778 std::string Name =
1779 Dynamic ? "__pass_dynamic_object_size" : "__pass_object_size";
1780 mangleArtificialTagType(TTK_Enum, Name + llvm::utostr(Type), {"__clang"});
1781
1782 if (FunArgBackReferences.size() < 10) {
1783 size_t Size = FunArgBackReferences.size();
1784 FunArgBackReferences[TypePtr] = Size;
1785 }
1786 } else {
1787 Out << Found->second;
1788 }
1789}
1790
1791void MicrosoftCXXNameMangler::mangleAddressSpaceType(QualType T,
1792 Qualifiers Quals,
1793 SourceRange Range) {
1794 // Address space is mangled as an unqualified templated type in the __clang
1795 // namespace. The demangled version of this is:
1796 // In the case of a language specific address space:
1797 // __clang::struct _AS[language_addr_space]<Type>
1798 // where:
1799 // <language_addr_space> ::= <OpenCL-addrspace> | <CUDA-addrspace>
1800 // <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" |
1801 // "private"| "generic" | "device" | "host" ]
1802 // <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ]
1803 // Note that the above were chosen to match the Itanium mangling for this.
1804 //
1805 // In the case of a non-language specific address space:
1806 // __clang::struct _AS<TargetAS, Type>
1807 assert(Quals.hasAddressSpace() && "Not valid without address space")((Quals.hasAddressSpace() && "Not valid without address space"
) ? static_cast<void> (0) : __assert_fail ("Quals.hasAddressSpace() && \"Not valid without address space\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1807, __PRETTY_FUNCTION__))
;
1808 llvm::SmallString<32> ASMangling;
1809 llvm::raw_svector_ostream Stream(ASMangling);
1810 MicrosoftCXXNameMangler Extra(Context, Stream);
1811 Stream << "?$";
1812
1813 LangAS AS = Quals.getAddressSpace();
1814 if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
1815 unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
1816 Extra.mangleSourceName("_AS");
1817 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(TargetAS),
1818 /*IsBoolean*/ false);
1819 } else {
1820 switch (AS) {
1821 default:
1822 llvm_unreachable("Not a language specific address space")::llvm::llvm_unreachable_internal("Not a language specific address space"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1822)
;
1823 case LangAS::opencl_global:
1824 Extra.mangleSourceName("_ASCLglobal");
1825 break;
1826 case LangAS::opencl_global_device:
1827 Extra.mangleSourceName("_ASCLdevice");
1828 break;
1829 case LangAS::opencl_global_host:
1830 Extra.mangleSourceName("_ASCLhost");
1831 break;
1832 case LangAS::opencl_local:
1833 Extra.mangleSourceName("_ASCLlocal");
1834 break;
1835 case LangAS::opencl_constant:
1836 Extra.mangleSourceName("_ASCLconstant");
1837 break;
1838 case LangAS::opencl_private:
1839 Extra.mangleSourceName("_ASCLprivate");
1840 break;
1841 case LangAS::opencl_generic:
1842 Extra.mangleSourceName("_ASCLgeneric");
1843 break;
1844 case LangAS::cuda_device:
1845 Extra.mangleSourceName("_ASCUdevice");
1846 break;
1847 case LangAS::cuda_constant:
1848 Extra.mangleSourceName("_ASCUconstant");
1849 break;
1850 case LangAS::cuda_shared:
1851 Extra.mangleSourceName("_ASCUshared");
1852 break;
1853 case LangAS::ptr32_sptr:
1854 case LangAS::ptr32_uptr:
1855 case LangAS::ptr64:
1856 llvm_unreachable("don't mangle ptr address spaces with _AS")::llvm::llvm_unreachable_internal("don't mangle ptr address spaces with _AS"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1856)
;
1857 }
1858 }
1859
1860 Extra.mangleType(T, Range, QMM_Escape);
1861 mangleQualifiers(Qualifiers(), false);
1862 mangleArtificialTagType(TTK_Struct, ASMangling, {"__clang"});
1863}
1864
1865void MicrosoftCXXNameMangler::mangleType(QualType T, SourceRange Range,
1866 QualifierMangleMode QMM) {
1867 // Don't use the canonical types. MSVC includes things like 'const' on
1868 // pointer arguments to function pointers that canonicalization strips away.
1869 T = T.getDesugaredType(getASTContext());
1870 Qualifiers Quals = T.getLocalQualifiers();
1871
1872 if (const ArrayType *AT = getASTContext().getAsArrayType(T)) {
13
Assuming 'AT' is null
14
Taking false branch
1873 // If there were any Quals, getAsArrayType() pushed them onto the array
1874 // element type.
1875 if (QMM == QMM_Mangle)
1876 Out << 'A';
1877 else if (QMM == QMM_Escape || QMM == QMM_Result)
1878 Out << "$$B";
1879 mangleArrayType(AT);
1880 return;
1881 }
1882
1883 bool IsPointer = T->isAnyPointerType() || T->isMemberPointerType() ||
1884 T->isReferenceType() || T->isBlockPointerType();
1885
1886 switch (QMM) {
15
Control jumps to 'case QMM_Drop:' at line 1887
1887 case QMM_Drop:
1888 if (Quals.hasObjCLifetime())
16
Assuming the condition is false
17
Taking false branch
1889 Quals = Quals.withoutObjCLifetime();
1890 break;
18
Execution continues on line 1917
1891 case QMM_Mangle:
1892 if (const FunctionType *FT = dyn_cast<FunctionType>(T)) {
1893 Out << '6';
1894 mangleFunctionType(FT);
1895 return;
1896 }
1897 mangleQualifiers(Quals, false);
1898 break;
1899 case QMM_Escape:
1900 if (!IsPointer && Quals) {
1901 Out << "$$C";
1902 mangleQualifiers(Quals, false);
1903 }
1904 break;
1905 case QMM_Result:
1906 // Presence of __unaligned qualifier shouldn't affect mangling here.
1907 Quals.removeUnaligned();
1908 if (Quals.hasObjCLifetime())
1909 Quals = Quals.withoutObjCLifetime();
1910 if ((!IsPointer && Quals) || isa<TagType>(T) || isArtificialTagType(T)) {
1911 Out << '?';
1912 mangleQualifiers(Quals, false);
1913 }
1914 break;
1915 }
1916
1917 const Type *ty = T.getTypePtr();
1918
1919 switch (ty->getTypeClass()) {
19
Control jumps to 'case ObjCObject:' at line 55
1920#define ABSTRACT_TYPE(CLASS, PARENT)
1921#define NON_CANONICAL_TYPE(CLASS, PARENT) \
1922 case Type::CLASS: \
1923 llvm_unreachable("can't mangle non-canonical type " #CLASS "Type")::llvm::llvm_unreachable_internal("can't mangle non-canonical type "
#CLASS "Type", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 1923)
; \
1924 return;
1925#define TYPE(CLASS, PARENT) \
1926 case Type::CLASS: \
1927 mangleType(cast<CLASS##Type>(ty), Quals, Range); \
1928 break;
1929#include "clang/AST/TypeNodes.inc"
1930#undef ABSTRACT_TYPE
1931#undef NON_CANONICAL_TYPE
1932#undef TYPE
1933 }
1934}
1935
1936void MicrosoftCXXNameMangler::mangleType(const BuiltinType *T, Qualifiers,
1937 SourceRange Range) {
1938 // <type> ::= <builtin-type>
1939 // <builtin-type> ::= X # void
1940 // ::= C # signed char
1941 // ::= D # char
1942 // ::= E # unsigned char
1943 // ::= F # short
1944 // ::= G # unsigned short (or wchar_t if it's not a builtin)
1945 // ::= H # int
1946 // ::= I # unsigned int
1947 // ::= J # long
1948 // ::= K # unsigned long
1949 // L # <none>
1950 // ::= M # float
1951 // ::= N # double
1952 // ::= O # long double (__float80 is mangled differently)
1953 // ::= _J # long long, __int64
1954 // ::= _K # unsigned long long, __int64
1955 // ::= _L # __int128
1956 // ::= _M # unsigned __int128
1957 // ::= _N # bool
1958 // _O # <array in parameter>
1959 // ::= _Q # char8_t
1960 // ::= _S # char16_t
1961 // ::= _T # __float80 (Intel)
1962 // ::= _U # char32_t
1963 // ::= _W # wchar_t
1964 // ::= _Z # __float80 (Digital Mars)
1965 switch (T->getKind()) {
1966 case BuiltinType::Void:
1967 Out << 'X';
1968 break;
1969 case BuiltinType::SChar:
1970 Out << 'C';
1971 break;
1972 case BuiltinType::Char_U:
1973 case BuiltinType::Char_S:
1974 Out << 'D';
1975 break;
1976 case BuiltinType::UChar:
1977 Out << 'E';
1978 break;
1979 case BuiltinType::Short:
1980 Out << 'F';
1981 break;
1982 case BuiltinType::UShort:
1983 Out << 'G';
1984 break;
1985 case BuiltinType::Int:
1986 Out << 'H';
1987 break;
1988 case BuiltinType::UInt:
1989 Out << 'I';
1990 break;
1991 case BuiltinType::Long:
1992 Out << 'J';
1993 break;
1994 case BuiltinType::ULong:
1995 Out << 'K';
1996 break;
1997 case BuiltinType::Float:
1998 Out << 'M';
1999 break;
2000 case BuiltinType::Double:
2001 Out << 'N';
2002 break;
2003 // TODO: Determine size and mangle accordingly
2004 case BuiltinType::LongDouble:
2005 Out << 'O';
2006 break;
2007 case BuiltinType::LongLong:
2008 Out << "_J";
2009 break;
2010 case BuiltinType::ULongLong:
2011 Out << "_K";
2012 break;
2013 case BuiltinType::Int128:
2014 Out << "_L";
2015 break;
2016 case BuiltinType::UInt128:
2017 Out << "_M";
2018 break;
2019 case BuiltinType::Bool:
2020 Out << "_N";
2021 break;
2022 case BuiltinType::Char8:
2023 Out << "_Q";
2024 break;
2025 case BuiltinType::Char16:
2026 Out << "_S";
2027 break;
2028 case BuiltinType::Char32:
2029 Out << "_U";
2030 break;
2031 case BuiltinType::WChar_S:
2032 case BuiltinType::WChar_U:
2033 Out << "_W";
2034 break;
2035
2036#define BUILTIN_TYPE(Id, SingletonId)
2037#define PLACEHOLDER_TYPE(Id, SingletonId) \
2038 case BuiltinType::Id:
2039#include "clang/AST/BuiltinTypes.def"
2040 case BuiltinType::Dependent:
2041 llvm_unreachable("placeholder types shouldn't get to name mangling")::llvm::llvm_unreachable_internal("placeholder types shouldn't get to name mangling"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2041)
;
2042
2043 case BuiltinType::ObjCId:
2044 mangleArtificialTagType(TTK_Struct, "objc_object");
2045 break;
2046 case BuiltinType::ObjCClass:
2047 mangleArtificialTagType(TTK_Struct, "objc_class");
2048 break;
2049 case BuiltinType::ObjCSel:
2050 mangleArtificialTagType(TTK_Struct, "objc_selector");
2051 break;
2052
2053#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
2054 case BuiltinType::Id: \
2055 Out << "PAUocl_" #ImgType "_" #Suffix "@@"; \
2056 break;
2057#include "clang/Basic/OpenCLImageTypes.def"
2058 case BuiltinType::OCLSampler:
2059 Out << "PA";
2060 mangleArtificialTagType(TTK_Struct, "ocl_sampler");
2061 break;
2062 case BuiltinType::OCLEvent:
2063 Out << "PA";
2064 mangleArtificialTagType(TTK_Struct, "ocl_event");
2065 break;
2066 case BuiltinType::OCLClkEvent:
2067 Out << "PA";
2068 mangleArtificialTagType(TTK_Struct, "ocl_clkevent");
2069 break;
2070 case BuiltinType::OCLQueue:
2071 Out << "PA";
2072 mangleArtificialTagType(TTK_Struct, "ocl_queue");
2073 break;
2074 case BuiltinType::OCLReserveID:
2075 Out << "PA";
2076 mangleArtificialTagType(TTK_Struct, "ocl_reserveid");
2077 break;
2078#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
2079 case BuiltinType::Id: \
2080 mangleArtificialTagType(TTK_Struct, "ocl_" #ExtType); \
2081 break;
2082#include "clang/Basic/OpenCLExtensionTypes.def"
2083
2084 case BuiltinType::NullPtr:
2085 Out << "$$T";
2086 break;
2087
2088 case BuiltinType::Float16:
2089 mangleArtificialTagType(TTK_Struct, "_Float16", {"__clang"});
2090 break;
2091
2092 case BuiltinType::Half:
2093 mangleArtificialTagType(TTK_Struct, "_Half", {"__clang"});
2094 break;
2095
2096#define SVE_TYPE(Name, Id, SingletonId) \
2097 case BuiltinType::Id:
2098#include "clang/Basic/AArch64SVEACLETypes.def"
2099 case BuiltinType::ShortAccum:
2100 case BuiltinType::Accum:
2101 case BuiltinType::LongAccum:
2102 case BuiltinType::UShortAccum:
2103 case BuiltinType::UAccum:
2104 case BuiltinType::ULongAccum:
2105 case BuiltinType::ShortFract:
2106 case BuiltinType::Fract:
2107 case BuiltinType::LongFract:
2108 case BuiltinType::UShortFract:
2109 case BuiltinType::UFract:
2110 case BuiltinType::ULongFract:
2111 case BuiltinType::SatShortAccum:
2112 case BuiltinType::SatAccum:
2113 case BuiltinType::SatLongAccum:
2114 case BuiltinType::SatUShortAccum:
2115 case BuiltinType::SatUAccum:
2116 case BuiltinType::SatULongAccum:
2117 case BuiltinType::SatShortFract:
2118 case BuiltinType::SatFract:
2119 case BuiltinType::SatLongFract:
2120 case BuiltinType::SatUShortFract:
2121 case BuiltinType::SatUFract:
2122 case BuiltinType::SatULongFract:
2123 case BuiltinType::BFloat16:
2124 case BuiltinType::Float128: {
2125 DiagnosticsEngine &Diags = Context.getDiags();
2126 unsigned DiagID = Diags.getCustomDiagID(
2127 DiagnosticsEngine::Error, "cannot mangle this built-in %0 type yet");
2128 Diags.Report(Range.getBegin(), DiagID)
2129 << T->getName(Context.getASTContext().getPrintingPolicy()) << Range;
2130 break;
2131 }
2132 }
2133}
2134
2135// <type> ::= <function-type>
2136void MicrosoftCXXNameMangler::mangleType(const FunctionProtoType *T, Qualifiers,
2137 SourceRange) {
2138 // Structors only appear in decls, so at this point we know it's not a
2139 // structor type.
2140 // FIXME: This may not be lambda-friendly.
2141 if (T->getMethodQuals() || T->getRefQualifier() != RQ_None) {
2142 Out << "$$A8@@";
2143 mangleFunctionType(T, /*D=*/nullptr, /*ForceThisQuals=*/true);
2144 } else {
2145 Out << "$$A6";
2146 mangleFunctionType(T);
2147 }
2148}
2149void MicrosoftCXXNameMangler::mangleType(const FunctionNoProtoType *T,
2150 Qualifiers, SourceRange) {
2151 Out << "$$A6";
2152 mangleFunctionType(T);
2153}
2154
2155void MicrosoftCXXNameMangler::mangleFunctionType(const FunctionType *T,
2156 const FunctionDecl *D,
2157 bool ForceThisQuals,
2158 bool MangleExceptionSpec) {
2159 // <function-type> ::= <this-cvr-qualifiers> <calling-convention>
2160 // <return-type> <argument-list> <throw-spec>
2161 const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(T);
2162
2163 SourceRange Range;
2164 if (D) Range = D->getSourceRange();
2165
2166 bool IsInLambda = false;
2167 bool IsStructor = false, HasThisQuals = ForceThisQuals, IsCtorClosure = false;
2168 CallingConv CC = T->getCallConv();
2169 if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(D)) {
2170 if (MD->getParent()->isLambda())
2171 IsInLambda = true;
2172 if (MD->isInstance())
2173 HasThisQuals = true;
2174 if (isa<CXXDestructorDecl>(MD)) {
2175 IsStructor = true;
2176 } else if (isa<CXXConstructorDecl>(MD)) {
2177 IsStructor = true;
2178 IsCtorClosure = (StructorType == Ctor_CopyingClosure ||
2179 StructorType == Ctor_DefaultClosure) &&
2180 isStructorDecl(MD);
2181 if (IsCtorClosure)
2182 CC = getASTContext().getDefaultCallingConvention(
2183 /*IsVariadic=*/false, /*IsCXXMethod=*/true);
2184 }
2185 }
2186
2187 // If this is a C++ instance method, mangle the CVR qualifiers for the
2188 // this pointer.
2189 if (HasThisQuals) {
2190 Qualifiers Quals = Proto->getMethodQuals();
2191 manglePointerExtQualifiers(Quals, /*PointeeType=*/QualType());
2192 mangleRefQualifier(Proto->getRefQualifier());
2193 mangleQualifiers(Quals, /*IsMember=*/false);
2194 }
2195
2196 mangleCallingConvention(CC);
2197
2198 // <return-type> ::= <type>
2199 // ::= @ # structors (they have no declared return type)
2200 if (IsStructor) {
2201 if (isa<CXXDestructorDecl>(D) && isStructorDecl(D)) {
2202 // The scalar deleting destructor takes an extra int argument which is not
2203 // reflected in the AST.
2204 if (StructorType == Dtor_Deleting) {
2205 Out << (PointersAre64Bit ? "PEAXI@Z" : "PAXI@Z");
2206 return;
2207 }
2208 // The vbase destructor returns void which is not reflected in the AST.
2209 if (StructorType == Dtor_Complete) {
2210 Out << "XXZ";
2211 return;
2212 }
2213 }
2214 if (IsCtorClosure) {
2215 // Default constructor closure and copy constructor closure both return
2216 // void.
2217 Out << 'X';
2218
2219 if (StructorType == Ctor_DefaultClosure) {
2220 // Default constructor closure always has no arguments.
2221 Out << 'X';
2222 } else if (StructorType == Ctor_CopyingClosure) {
2223 // Copy constructor closure always takes an unqualified reference.
2224 mangleFunctionArgumentType(getASTContext().getLValueReferenceType(
2225 Proto->getParamType(0)
2226 ->getAs<LValueReferenceType>()
2227 ->getPointeeType(),
2228 /*SpelledAsLValue=*/true),
2229 Range);
2230 Out << '@';
2231 } else {
2232 llvm_unreachable("unexpected constructor closure!")::llvm::llvm_unreachable_internal("unexpected constructor closure!"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2232)
;
2233 }
2234 Out << 'Z';
2235 return;
2236 }
2237 Out << '@';
2238 } else {
2239 QualType ResultType = T->getReturnType();
2240 if (const auto *AT =
2241 dyn_cast_or_null<AutoType>(ResultType->getContainedAutoType())) {
2242 Out << '?';
2243 mangleQualifiers(ResultType.getLocalQualifiers(), /*IsMember=*/false);
2244 Out << '?';
2245 assert(AT->getKeyword() != AutoTypeKeyword::GNUAutoType &&((AT->getKeyword() != AutoTypeKeyword::GNUAutoType &&
"shouldn't need to mangle __auto_type!") ? static_cast<void
> (0) : __assert_fail ("AT->getKeyword() != AutoTypeKeyword::GNUAutoType && \"shouldn't need to mangle __auto_type!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2246, __PRETTY_FUNCTION__))
2246 "shouldn't need to mangle __auto_type!")((AT->getKeyword() != AutoTypeKeyword::GNUAutoType &&
"shouldn't need to mangle __auto_type!") ? static_cast<void
> (0) : __assert_fail ("AT->getKeyword() != AutoTypeKeyword::GNUAutoType && \"shouldn't need to mangle __auto_type!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2246, __PRETTY_FUNCTION__))
;
2247 mangleSourceName(AT->isDecltypeAuto() ? "<decltype-auto>" : "<auto>");
2248 Out << '@';
2249 } else if (IsInLambda) {
2250 Out << '@';
2251 } else {
2252 if (ResultType->isVoidType())
2253 ResultType = ResultType.getUnqualifiedType();
2254 mangleType(ResultType, Range, QMM_Result);
2255 }
2256 }
2257
2258 // <argument-list> ::= X # void
2259 // ::= <type>+ @
2260 // ::= <type>* Z # varargs
2261 if (!Proto) {
2262 // Function types without prototypes can arise when mangling a function type
2263 // within an overloadable function in C. We mangle these as the absence of
2264 // any parameter types (not even an empty parameter list).
2265 Out << '@';
2266 } else if (Proto->getNumParams() == 0 && !Proto->isVariadic()) {
2267 Out << 'X';
2268 } else {
2269 // Happens for function pointer type arguments for example.
2270 for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) {
2271 mangleFunctionArgumentType(Proto->getParamType(I), Range);
2272 // Mangle each pass_object_size parameter as if it's a parameter of enum
2273 // type passed directly after the parameter with the pass_object_size
2274 // attribute. The aforementioned enum's name is __pass_object_size, and we
2275 // pretend it resides in a top-level namespace called __clang.
2276 //
2277 // FIXME: Is there a defined extension notation for the MS ABI, or is it
2278 // necessary to just cross our fingers and hope this type+namespace
2279 // combination doesn't conflict with anything?
2280 if (D)
2281 if (const auto *P = D->getParamDecl(I)->getAttr<PassObjectSizeAttr>())
2282 manglePassObjectSizeArg(P);
2283 }
2284 // <builtin-type> ::= Z # ellipsis
2285 if (Proto->isVariadic())
2286 Out << 'Z';
2287 else
2288 Out << '@';
2289 }
2290
2291 if (MangleExceptionSpec && getASTContext().getLangOpts().CPlusPlus17 &&
2292 getASTContext().getLangOpts().isCompatibleWithMSVC(
2293 LangOptions::MSVC2017_5))
2294 mangleThrowSpecification(Proto);
2295 else
2296 Out << 'Z';
2297}
2298
2299void MicrosoftCXXNameMangler::mangleFunctionClass(const FunctionDecl *FD) {
2300 // <function-class> ::= <member-function> E? # E designates a 64-bit 'this'
2301 // # pointer. in 64-bit mode *all*
2302 // # 'this' pointers are 64-bit.
2303 // ::= <global-function>
2304 // <member-function> ::= A # private: near
2305 // ::= B # private: far
2306 // ::= C # private: static near
2307 // ::= D # private: static far
2308 // ::= E # private: virtual near
2309 // ::= F # private: virtual far
2310 // ::= I # protected: near
2311 // ::= J # protected: far
2312 // ::= K # protected: static near
2313 // ::= L # protected: static far
2314 // ::= M # protected: virtual near
2315 // ::= N # protected: virtual far
2316 // ::= Q # public: near
2317 // ::= R # public: far
2318 // ::= S # public: static near
2319 // ::= T # public: static far
2320 // ::= U # public: virtual near
2321 // ::= V # public: virtual far
2322 // <global-function> ::= Y # global near
2323 // ::= Z # global far
2324 if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
2325 bool IsVirtual = MD->isVirtual();
2326 // When mangling vbase destructor variants, ignore whether or not the
2327 // underlying destructor was defined to be virtual.
2328 if (isa<CXXDestructorDecl>(MD) && isStructorDecl(MD) &&
2329 StructorType == Dtor_Complete) {
2330 IsVirtual = false;
2331 }
2332 switch (MD->getAccess()) {
2333 case AS_none:
2334 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2334)
;
2335 case AS_private:
2336 if (MD->isStatic())
2337 Out << 'C';
2338 else if (IsVirtual)
2339 Out << 'E';
2340 else
2341 Out << 'A';
2342 break;
2343 case AS_protected:
2344 if (MD->isStatic())
2345 Out << 'K';
2346 else if (IsVirtual)
2347 Out << 'M';
2348 else
2349 Out << 'I';
2350 break;
2351 case AS_public:
2352 if (MD->isStatic())
2353 Out << 'S';
2354 else if (IsVirtual)
2355 Out << 'U';
2356 else
2357 Out << 'Q';
2358 }
2359 } else {
2360 Out << 'Y';
2361 }
2362}
2363void MicrosoftCXXNameMangler::mangleCallingConvention(CallingConv CC) {
2364 // <calling-convention> ::= A # __cdecl
2365 // ::= B # __export __cdecl
2366 // ::= C # __pascal
2367 // ::= D # __export __pascal
2368 // ::= E # __thiscall
2369 // ::= F # __export __thiscall
2370 // ::= G # __stdcall
2371 // ::= H # __export __stdcall
2372 // ::= I # __fastcall
2373 // ::= J # __export __fastcall
2374 // ::= Q # __vectorcall
2375 // ::= w # __regcall
2376 // The 'export' calling conventions are from a bygone era
2377 // (*cough*Win16*cough*) when functions were declared for export with
2378 // that keyword. (It didn't actually export them, it just made them so
2379 // that they could be in a DLL and somebody from another module could call
2380 // them.)
2381
2382 switch (CC) {
2383 default:
2384 llvm_unreachable("Unsupported CC for mangling")::llvm::llvm_unreachable_internal("Unsupported CC for mangling"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2384)
;
2385 case CC_Win64:
2386 case CC_X86_64SysV:
2387 case CC_C: Out << 'A'; break;
2388 case CC_X86Pascal: Out << 'C'; break;
2389 case CC_X86ThisCall: Out << 'E'; break;
2390 case CC_X86StdCall: Out << 'G'; break;
2391 case CC_X86FastCall: Out << 'I'; break;
2392 case CC_X86VectorCall: Out << 'Q'; break;
2393 case CC_Swift: Out << 'S'; break;
2394 case CC_PreserveMost: Out << 'U'; break;
2395 case CC_X86RegCall: Out << 'w'; break;
2396 }
2397}
2398void MicrosoftCXXNameMangler::mangleCallingConvention(const FunctionType *T) {
2399 mangleCallingConvention(T->getCallConv());
2400}
2401
2402void MicrosoftCXXNameMangler::mangleThrowSpecification(
2403 const FunctionProtoType *FT) {
2404 // <throw-spec> ::= Z # (default)
2405 // ::= _E # noexcept
2406 if (FT->canThrow())
2407 Out << 'Z';
2408 else
2409 Out << "_E";
2410}
2411
2412void MicrosoftCXXNameMangler::mangleType(const UnresolvedUsingType *T,
2413 Qualifiers, SourceRange Range) {
2414 // Probably should be mangled as a template instantiation; need to see what
2415 // VC does first.
2416 DiagnosticsEngine &Diags = Context.getDiags();
2417 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2418 "cannot mangle this unresolved dependent type yet");
2419 Diags.Report(Range.getBegin(), DiagID)
2420 << Range;
2421}
2422
2423// <type> ::= <union-type> | <struct-type> | <class-type> | <enum-type>
2424// <union-type> ::= T <name>
2425// <struct-type> ::= U <name>
2426// <class-type> ::= V <name>
2427// <enum-type> ::= W4 <name>
2428void MicrosoftCXXNameMangler::mangleTagTypeKind(TagTypeKind TTK) {
2429 switch (TTK) {
2430 case TTK_Union:
2431 Out << 'T';
2432 break;
2433 case TTK_Struct:
2434 case TTK_Interface:
2435 Out << 'U';
2436 break;
2437 case TTK_Class:
2438 Out << 'V';
2439 break;
2440 case TTK_Enum:
2441 Out << "W4";
2442 break;
2443 }
2444}
2445void MicrosoftCXXNameMangler::mangleType(const EnumType *T, Qualifiers,
2446 SourceRange) {
2447 mangleType(cast<TagType>(T)->getDecl());
2448}
2449void MicrosoftCXXNameMangler::mangleType(const RecordType *T, Qualifiers,
2450 SourceRange) {
2451 mangleType(cast<TagType>(T)->getDecl());
2452}
2453void MicrosoftCXXNameMangler::mangleType(const TagDecl *TD) {
2454 mangleTagTypeKind(TD->getTagKind());
2455 mangleName(TD);
2456}
2457
2458// If you add a call to this, consider updating isArtificialTagType() too.
2459void MicrosoftCXXNameMangler::mangleArtificialTagType(
2460 TagTypeKind TK, StringRef UnqualifiedName,
2461 ArrayRef<StringRef> NestedNames) {
2462 // <name> ::= <unscoped-name> {[<named-scope>]+ | [<nested-name>]}? @
2463 mangleTagTypeKind(TK);
2464
2465 // Always start with the unqualified name.
2466 mangleSourceName(UnqualifiedName);
2467
2468 for (auto I = NestedNames.rbegin(), E = NestedNames.rend(); I != E; ++I)
2469 mangleSourceName(*I);
2470
2471 // Terminate the whole name with an '@'.
2472 Out << '@';
2473}
2474
2475// <type> ::= <array-type>
2476// <array-type> ::= <pointer-cvr-qualifiers> <cvr-qualifiers>
2477// [Y <dimension-count> <dimension>+]
2478// <element-type> # as global, E is never required
2479// It's supposed to be the other way around, but for some strange reason, it
2480// isn't. Today this behavior is retained for the sole purpose of backwards
2481// compatibility.
2482void MicrosoftCXXNameMangler::mangleDecayedArrayType(const ArrayType *T) {
2483 // This isn't a recursive mangling, so now we have to do it all in this
2484 // one call.
2485 manglePointerCVQualifiers(T->getElementType().getQualifiers());
2486 mangleType(T->getElementType(), SourceRange());
2487}
2488void MicrosoftCXXNameMangler::mangleType(const ConstantArrayType *T, Qualifiers,
2489 SourceRange) {
2490 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2490)
;
2491}
2492void MicrosoftCXXNameMangler::mangleType(const VariableArrayType *T, Qualifiers,
2493 SourceRange) {
2494 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2494)
;
2495}
2496void MicrosoftCXXNameMangler::mangleType(const DependentSizedArrayType *T,
2497 Qualifiers, SourceRange) {
2498 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2498)
;
2499}
2500void MicrosoftCXXNameMangler::mangleType(const IncompleteArrayType *T,
2501 Qualifiers, SourceRange) {
2502 llvm_unreachable("Should have been special cased")::llvm::llvm_unreachable_internal("Should have been special cased"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2502)
;
2503}
2504void MicrosoftCXXNameMangler::mangleArrayType(const ArrayType *T) {
2505 QualType ElementTy(T, 0);
2506 SmallVector<llvm::APInt, 3> Dimensions;
2507 for (;;) {
2508 if (ElementTy->isConstantArrayType()) {
2509 const ConstantArrayType *CAT =
2510 getASTContext().getAsConstantArrayType(ElementTy);
2511 Dimensions.push_back(CAT->getSize());
2512 ElementTy = CAT->getElementType();
2513 } else if (ElementTy->isIncompleteArrayType()) {
2514 const IncompleteArrayType *IAT =
2515 getASTContext().getAsIncompleteArrayType(ElementTy);
2516 Dimensions.push_back(llvm::APInt(32, 0));
2517 ElementTy = IAT->getElementType();
2518 } else if (ElementTy->isVariableArrayType()) {
2519 const VariableArrayType *VAT =
2520 getASTContext().getAsVariableArrayType(ElementTy);
2521 Dimensions.push_back(llvm::APInt(32, 0));
2522 ElementTy = VAT->getElementType();
2523 } else if (ElementTy->isDependentSizedArrayType()) {
2524 // The dependent expression has to be folded into a constant (TODO).
2525 const DependentSizedArrayType *DSAT =
2526 getASTContext().getAsDependentSizedArrayType(ElementTy);
2527 DiagnosticsEngine &Diags = Context.getDiags();
2528 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2529 "cannot mangle this dependent-length array yet");
2530 Diags.Report(DSAT->getSizeExpr()->getExprLoc(), DiagID)
2531 << DSAT->getBracketsRange();
2532 return;
2533 } else {
2534 break;
2535 }
2536 }
2537 Out << 'Y';
2538 // <dimension-count> ::= <number> # number of extra dimensions
2539 mangleNumber(Dimensions.size());
2540 for (const llvm::APInt &Dimension : Dimensions)
2541 mangleNumber(Dimension.getLimitedValue());
2542 mangleType(ElementTy, SourceRange(), QMM_Escape);
2543}
2544
2545// <type> ::= <pointer-to-member-type>
2546// <pointer-to-member-type> ::= <pointer-cvr-qualifiers> <cvr-qualifiers>
2547// <class name> <type>
2548void MicrosoftCXXNameMangler::mangleType(const MemberPointerType *T,
2549 Qualifiers Quals, SourceRange Range) {
2550 QualType PointeeType = T->getPointeeType();
2551 manglePointerCVQualifiers(Quals);
2552 manglePointerExtQualifiers(Quals, PointeeType);
2553 if (const FunctionProtoType *FPT = PointeeType->getAs<FunctionProtoType>()) {
2554 Out << '8';
2555 mangleName(T->getClass()->castAs<RecordType>()->getDecl());
2556 mangleFunctionType(FPT, nullptr, true);
2557 } else {
2558 mangleQualifiers(PointeeType.getQualifiers(), true);
2559 mangleName(T->getClass()->castAs<RecordType>()->getDecl());
2560 mangleType(PointeeType, Range, QMM_Drop);
2561 }
2562}
2563
2564void MicrosoftCXXNameMangler::mangleType(const TemplateTypeParmType *T,
2565 Qualifiers, SourceRange Range) {
2566 DiagnosticsEngine &Diags = Context.getDiags();
2567 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2568 "cannot mangle this template type parameter type yet");
2569 Diags.Report(Range.getBegin(), DiagID)
2570 << Range;
2571}
2572
2573void MicrosoftCXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T,
2574 Qualifiers, SourceRange Range) {
2575 DiagnosticsEngine &Diags = Context.getDiags();
2576 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2577 "cannot mangle this substituted parameter pack yet");
2578 Diags.Report(Range.getBegin(), DiagID)
2579 << Range;
2580}
2581
2582// <type> ::= <pointer-type>
2583// <pointer-type> ::= E? <pointer-cvr-qualifiers> <cvr-qualifiers> <type>
2584// # the E is required for 64-bit non-static pointers
2585void MicrosoftCXXNameMangler::mangleType(const PointerType *T, Qualifiers Quals,
2586 SourceRange Range) {
2587 QualType PointeeType = T->getPointeeType();
2588 manglePointerCVQualifiers(Quals);
2589 manglePointerExtQualifiers(Quals, PointeeType);
2590
2591 // For pointer size address spaces, go down the same type mangling path as
2592 // non address space types.
2593 LangAS AddrSpace = PointeeType.getQualifiers().getAddressSpace();
2594 if (isPtrSizeAddressSpace(AddrSpace) || AddrSpace == LangAS::Default)
2595 mangleType(PointeeType, Range);
2596 else
2597 mangleAddressSpaceType(PointeeType, PointeeType.getQualifiers(), Range);
2598}
2599
2600void MicrosoftCXXNameMangler::mangleType(const ObjCObjectPointerType *T,
2601 Qualifiers Quals, SourceRange Range) {
2602 QualType PointeeType = T->getPointeeType();
2603 switch (Quals.getObjCLifetime()) {
2604 case Qualifiers::OCL_None:
2605 case Qualifiers::OCL_ExplicitNone:
2606 break;
2607 case Qualifiers::OCL_Autoreleasing:
2608 case Qualifiers::OCL_Strong:
2609 case Qualifiers::OCL_Weak:
2610 return mangleObjCLifetime(PointeeType, Quals, Range);
2611 }
2612 manglePointerCVQualifiers(Quals);
2613 manglePointerExtQualifiers(Quals, PointeeType);
2614 mangleType(PointeeType, Range);
2615}
2616
2617// <type> ::= <reference-type>
2618// <reference-type> ::= A E? <cvr-qualifiers> <type>
2619// # the E is required for 64-bit non-static lvalue references
2620void MicrosoftCXXNameMangler::mangleType(const LValueReferenceType *T,
2621 Qualifiers Quals, SourceRange Range) {
2622 QualType PointeeType = T->getPointeeType();
2623 assert(!Quals.hasConst() && !Quals.hasVolatile() && "unexpected qualifier!")((!Quals.hasConst() && !Quals.hasVolatile() &&
"unexpected qualifier!") ? static_cast<void> (0) : __assert_fail
("!Quals.hasConst() && !Quals.hasVolatile() && \"unexpected qualifier!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2623, __PRETTY_FUNCTION__))
;
2624 Out << 'A';
2625 manglePointerExtQualifiers(Quals, PointeeType);
2626 mangleType(PointeeType, Range);
2627}
2628
2629// <type> ::= <r-value-reference-type>
2630// <r-value-reference-type> ::= $$Q E? <cvr-qualifiers> <type>
2631// # the E is required for 64-bit non-static rvalue references
2632void MicrosoftCXXNameMangler::mangleType(const RValueReferenceType *T,
2633 Qualifiers Quals, SourceRange Range) {
2634 QualType PointeeType = T->getPointeeType();
2635 assert(!Quals.hasConst() && !Quals.hasVolatile() && "unexpected qualifier!")((!Quals.hasConst() && !Quals.hasVolatile() &&
"unexpected qualifier!") ? static_cast<void> (0) : __assert_fail
("!Quals.hasConst() && !Quals.hasVolatile() && \"unexpected qualifier!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2635, __PRETTY_FUNCTION__))
;
2636 Out << "$$Q";
2637 manglePointerExtQualifiers(Quals, PointeeType);
2638 mangleType(PointeeType, Range);
2639}
2640
2641void MicrosoftCXXNameMangler::mangleType(const ComplexType *T, Qualifiers,
2642 SourceRange Range) {
2643 QualType ElementType = T->getElementType();
2644
2645 llvm::SmallString<64> TemplateMangling;
2646 llvm::raw_svector_ostream Stream(TemplateMangling);
2647 MicrosoftCXXNameMangler Extra(Context, Stream);
2648 Stream << "?$";
2649 Extra.mangleSourceName("_Complex");
2650 Extra.mangleType(ElementType, Range, QMM_Escape);
2651
2652 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2653}
2654
2655// Returns true for types that mangleArtificialTagType() gets called for with
2656// TTK_Union, TTK_Struct, TTK_Class and where compatibility with MSVC's
2657// mangling matters.
2658// (It doesn't matter for Objective-C types and the like that cl.exe doesn't
2659// support.)
2660bool MicrosoftCXXNameMangler::isArtificialTagType(QualType T) const {
2661 const Type *ty = T.getTypePtr();
2662 switch (ty->getTypeClass()) {
2663 default:
2664 return false;
2665
2666 case Type::Vector: {
2667 // For ABI compatibility only __m64, __m128(id), and __m256(id) matter,
2668 // but since mangleType(VectorType*) always calls mangleArtificialTagType()
2669 // just always return true (the other vector types are clang-only).
2670 return true;
2671 }
2672 }
2673}
2674
2675void MicrosoftCXXNameMangler::mangleType(const VectorType *T, Qualifiers Quals,
2676 SourceRange Range) {
2677 const BuiltinType *ET = T->getElementType()->getAs<BuiltinType>();
2678 assert(ET && "vectors with non-builtin elements are unsupported")((ET && "vectors with non-builtin elements are unsupported"
) ? static_cast<void> (0) : __assert_fail ("ET && \"vectors with non-builtin elements are unsupported\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2678, __PRETTY_FUNCTION__))
;
2679 uint64_t Width = getASTContext().getTypeSize(T);
2680 // Pattern match exactly the typedefs in our intrinsic headers. Anything that
2681 // doesn't match the Intel types uses a custom mangling below.
2682 size_t OutSizeBefore = Out.tell();
2683 if (!isa<ExtVectorType>(T)) {
2684 if (getASTContext().getTargetInfo().getTriple().isX86()) {
2685 if (Width == 64 && ET->getKind() == BuiltinType::LongLong) {
2686 mangleArtificialTagType(TTK_Union, "__m64");
2687 } else if (Width >= 128) {
2688 if (ET->getKind() == BuiltinType::Float)
2689 mangleArtificialTagType(TTK_Union, "__m" + llvm::utostr(Width));
2690 else if (ET->getKind() == BuiltinType::LongLong)
2691 mangleArtificialTagType(TTK_Union, "__m" + llvm::utostr(Width) + 'i');
2692 else if (ET->getKind() == BuiltinType::Double)
2693 mangleArtificialTagType(TTK_Struct, "__m" + llvm::utostr(Width) + 'd');
2694 }
2695 }
2696 }
2697
2698 bool IsBuiltin = Out.tell() != OutSizeBefore;
2699 if (!IsBuiltin) {
2700 // The MS ABI doesn't have a special mangling for vector types, so we define
2701 // our own mangling to handle uses of __vector_size__ on user-specified
2702 // types, and for extensions like __v4sf.
2703
2704 llvm::SmallString<64> TemplateMangling;
2705 llvm::raw_svector_ostream Stream(TemplateMangling);
2706 MicrosoftCXXNameMangler Extra(Context, Stream);
2707 Stream << "?$";
2708 Extra.mangleSourceName("__vector");
2709 Extra.mangleType(QualType(ET, 0), Range, QMM_Escape);
2710 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumElements()),
2711 /*IsBoolean=*/false);
2712
2713 mangleArtificialTagType(TTK_Union, TemplateMangling, {"__clang"});
2714 }
2715}
2716
2717void MicrosoftCXXNameMangler::mangleType(const ExtVectorType *T,
2718 Qualifiers Quals, SourceRange Range) {
2719 mangleType(static_cast<const VectorType *>(T), Quals, Range);
2720}
2721
2722void MicrosoftCXXNameMangler::mangleType(const DependentVectorType *T,
2723 Qualifiers, SourceRange Range) {
2724 DiagnosticsEngine &Diags = Context.getDiags();
2725 unsigned DiagID = Diags.getCustomDiagID(
2726 DiagnosticsEngine::Error,
2727 "cannot mangle this dependent-sized vector type yet");
2728 Diags.Report(Range.getBegin(), DiagID) << Range;
2729}
2730
2731void MicrosoftCXXNameMangler::mangleType(const DependentSizedExtVectorType *T,
2732 Qualifiers, SourceRange Range) {
2733 DiagnosticsEngine &Diags = Context.getDiags();
2734 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2735 "cannot mangle this dependent-sized extended vector type yet");
2736 Diags.Report(Range.getBegin(), DiagID)
2737 << Range;
2738}
2739
2740void MicrosoftCXXNameMangler::mangleType(const ConstantMatrixType *T,
2741 Qualifiers quals, SourceRange Range) {
2742 DiagnosticsEngine &Diags = Context.getDiags();
2743 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2744 "Cannot mangle this matrix type yet");
2745 Diags.Report(Range.getBegin(), DiagID) << Range;
2746}
2747
2748void MicrosoftCXXNameMangler::mangleType(const DependentSizedMatrixType *T,
2749 Qualifiers quals, SourceRange Range) {
2750 DiagnosticsEngine &Diags = Context.getDiags();
2751 unsigned DiagID = Diags.getCustomDiagID(
2752 DiagnosticsEngine::Error,
2753 "Cannot mangle this dependent-sized matrix type yet");
2754 Diags.Report(Range.getBegin(), DiagID) << Range;
2755}
2756
2757void MicrosoftCXXNameMangler::mangleType(const DependentAddressSpaceType *T,
2758 Qualifiers, SourceRange Range) {
2759 DiagnosticsEngine &Diags = Context.getDiags();
2760 unsigned DiagID = Diags.getCustomDiagID(
2761 DiagnosticsEngine::Error,
2762 "cannot mangle this dependent address space type yet");
2763 Diags.Report(Range.getBegin(), DiagID) << Range;
2764}
2765
2766void MicrosoftCXXNameMangler::mangleType(const ObjCInterfaceType *T, Qualifiers,
2767 SourceRange) {
2768 // ObjC interfaces have structs underlying them.
2769 mangleTagTypeKind(TTK_Struct);
2770 mangleName(T->getDecl());
2771}
2772
2773void MicrosoftCXXNameMangler::mangleType(const ObjCObjectType *T,
2774 Qualifiers Quals, SourceRange Range) {
2775 if (T->isKindOfType())
22
Assuming the condition is true
23
Taking true branch
28
Called C++ object pointer is null
2776 return mangleObjCKindOfType(T, Quals, Range);
24
Calling 'MicrosoftCXXNameMangler::mangleObjCKindOfType'
2777
2778 if (T->qual_empty() && !T->isSpecialized())
2779 return mangleType(T->getBaseType(), Range, QMM_Drop);
2780
2781 ArgBackRefMap OuterFunArgsContext;
2782 ArgBackRefMap OuterTemplateArgsContext;
2783 BackRefVec OuterTemplateContext;
2784
2785 FunArgBackReferences.swap(OuterFunArgsContext);
2786 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
2787 NameBackReferences.swap(OuterTemplateContext);
2788
2789 mangleTagTypeKind(TTK_Struct);
2790
2791 Out << "?$";
2792 if (T->isObjCId())
2793 mangleSourceName("objc_object");
2794 else if (T->isObjCClass())
2795 mangleSourceName("objc_class");
2796 else
2797 mangleSourceName(T->getInterface()->getName());
2798
2799 for (const auto &Q : T->quals())
2800 mangleObjCProtocol(Q);
2801
2802 if (T->isSpecialized())
2803 for (const auto &TA : T->getTypeArgs())
2804 mangleType(TA, Range, QMM_Drop);
2805
2806 Out << '@';
2807
2808 Out << '@';
2809
2810 FunArgBackReferences.swap(OuterFunArgsContext);
2811 TemplateArgBackReferences.swap(OuterTemplateArgsContext);
2812 NameBackReferences.swap(OuterTemplateContext);
2813}
2814
2815void MicrosoftCXXNameMangler::mangleType(const BlockPointerType *T,
2816 Qualifiers Quals, SourceRange Range) {
2817 QualType PointeeType = T->getPointeeType();
2818 manglePointerCVQualifiers(Quals);
2819 manglePointerExtQualifiers(Quals, PointeeType);
2820
2821 Out << "_E";
2822
2823 mangleFunctionType(PointeeType->castAs<FunctionProtoType>());
2824}
2825
2826void MicrosoftCXXNameMangler::mangleType(const InjectedClassNameType *,
2827 Qualifiers, SourceRange) {
2828 llvm_unreachable("Cannot mangle injected class name type.")::llvm::llvm_unreachable_internal("Cannot mangle injected class name type."
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2828)
;
2829}
2830
2831void MicrosoftCXXNameMangler::mangleType(const TemplateSpecializationType *T,
2832 Qualifiers, SourceRange Range) {
2833 DiagnosticsEngine &Diags = Context.getDiags();
2834 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2835 "cannot mangle this template specialization type yet");
2836 Diags.Report(Range.getBegin(), DiagID)
2837 << Range;
2838}
2839
2840void MicrosoftCXXNameMangler::mangleType(const DependentNameType *T, Qualifiers,
2841 SourceRange Range) {
2842 DiagnosticsEngine &Diags = Context.getDiags();
2843 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2844 "cannot mangle this dependent name type yet");
2845 Diags.Report(Range.getBegin(), DiagID)
2846 << Range;
2847}
2848
2849void MicrosoftCXXNameMangler::mangleType(
2850 const DependentTemplateSpecializationType *T, Qualifiers,
2851 SourceRange Range) {
2852 DiagnosticsEngine &Diags = Context.getDiags();
2853 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2854 "cannot mangle this dependent template specialization type yet");
2855 Diags.Report(Range.getBegin(), DiagID)
2856 << Range;
2857}
2858
2859void MicrosoftCXXNameMangler::mangleType(const PackExpansionType *T, Qualifiers,
2860 SourceRange Range) {
2861 DiagnosticsEngine &Diags = Context.getDiags();
2862 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2863 "cannot mangle this pack expansion yet");
2864 Diags.Report(Range.getBegin(), DiagID)
2865 << Range;
2866}
2867
2868void MicrosoftCXXNameMangler::mangleType(const TypeOfType *T, Qualifiers,
2869 SourceRange Range) {
2870 DiagnosticsEngine &Diags = Context.getDiags();
2871 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2872 "cannot mangle this typeof(type) yet");
2873 Diags.Report(Range.getBegin(), DiagID)
2874 << Range;
2875}
2876
2877void MicrosoftCXXNameMangler::mangleType(const TypeOfExprType *T, Qualifiers,
2878 SourceRange Range) {
2879 DiagnosticsEngine &Diags = Context.getDiags();
2880 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2881 "cannot mangle this typeof(expression) yet");
2882 Diags.Report(Range.getBegin(), DiagID)
2883 << Range;
2884}
2885
2886void MicrosoftCXXNameMangler::mangleType(const DecltypeType *T, Qualifiers,
2887 SourceRange Range) {
2888 DiagnosticsEngine &Diags = Context.getDiags();
2889 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2890 "cannot mangle this decltype() yet");
2891 Diags.Report(Range.getBegin(), DiagID)
2892 << Range;
2893}
2894
2895void MicrosoftCXXNameMangler::mangleType(const UnaryTransformType *T,
2896 Qualifiers, SourceRange Range) {
2897 DiagnosticsEngine &Diags = Context.getDiags();
2898 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2899 "cannot mangle this unary transform type yet");
2900 Diags.Report(Range.getBegin(), DiagID)
2901 << Range;
2902}
2903
2904void MicrosoftCXXNameMangler::mangleType(const AutoType *T, Qualifiers,
2905 SourceRange Range) {
2906 assert(T->getDeducedType().isNull() && "expecting a dependent type!")((T->getDeducedType().isNull() && "expecting a dependent type!"
) ? static_cast<void> (0) : __assert_fail ("T->getDeducedType().isNull() && \"expecting a dependent type!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2906, __PRETTY_FUNCTION__))
;
2907
2908 DiagnosticsEngine &Diags = Context.getDiags();
2909 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2910 "cannot mangle this 'auto' type yet");
2911 Diags.Report(Range.getBegin(), DiagID)
2912 << Range;
2913}
2914
2915void MicrosoftCXXNameMangler::mangleType(
2916 const DeducedTemplateSpecializationType *T, Qualifiers, SourceRange Range) {
2917 assert(T->getDeducedType().isNull() && "expecting a dependent type!")((T->getDeducedType().isNull() && "expecting a dependent type!"
) ? static_cast<void> (0) : __assert_fail ("T->getDeducedType().isNull() && \"expecting a dependent type!\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 2917, __PRETTY_FUNCTION__))
;
2918
2919 DiagnosticsEngine &Diags = Context.getDiags();
2920 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
2921 "cannot mangle this deduced class template specialization type yet");
2922 Diags.Report(Range.getBegin(), DiagID)
2923 << Range;
2924}
2925
2926void MicrosoftCXXNameMangler::mangleType(const AtomicType *T, Qualifiers,
2927 SourceRange Range) {
2928 QualType ValueType = T->getValueType();
2929
2930 llvm::SmallString<64> TemplateMangling;
2931 llvm::raw_svector_ostream Stream(TemplateMangling);
2932 MicrosoftCXXNameMangler Extra(Context, Stream);
2933 Stream << "?$";
2934 Extra.mangleSourceName("_Atomic");
2935 Extra.mangleType(ValueType, Range, QMM_Escape);
2936
2937 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2938}
2939
2940void MicrosoftCXXNameMangler::mangleType(const PipeType *T, Qualifiers,
2941 SourceRange Range) {
2942 QualType ElementType = T->getElementType();
2943
2944 llvm::SmallString<64> TemplateMangling;
2945 llvm::raw_svector_ostream Stream(TemplateMangling);
2946 MicrosoftCXXNameMangler Extra(Context, Stream);
2947 Stream << "?$";
2948 Extra.mangleSourceName("ocl_pipe");
2949 Extra.mangleType(ElementType, Range, QMM_Escape);
2950 Extra.mangleIntegerLiteral(llvm::APSInt::get(T->isReadOnly()), true);
2951
2952 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2953}
2954
2955void MicrosoftMangleContextImpl::mangleCXXName(GlobalDecl GD,
2956 raw_ostream &Out) {
2957 const NamedDecl *D = cast<NamedDecl>(GD.getDecl());
2958 PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
2959 getASTContext().getSourceManager(),
2960 "Mangling declaration");
2961
2962 msvc_hashing_ostream MHO(Out);
2963
2964 if (auto *CD = dyn_cast<CXXConstructorDecl>(D)) {
2965 auto Type = GD.getCtorType();
2966 MicrosoftCXXNameMangler mangler(*this, MHO, CD, Type);
2967 return mangler.mangle(D);
2968 }
2969
2970 if (auto *DD = dyn_cast<CXXDestructorDecl>(D)) {
2971 auto Type = GD.getDtorType();
2972 MicrosoftCXXNameMangler mangler(*this, MHO, DD, Type);
2973 return mangler.mangle(D);
2974 }
2975
2976 MicrosoftCXXNameMangler Mangler(*this, MHO);
2977 return Mangler.mangle(D);
2978}
2979
2980void MicrosoftCXXNameMangler::mangleType(const ExtIntType *T, Qualifiers,
2981 SourceRange Range) {
2982 llvm::SmallString<64> TemplateMangling;
2983 llvm::raw_svector_ostream Stream(TemplateMangling);
2984 MicrosoftCXXNameMangler Extra(Context, Stream);
2985 Stream << "?$";
2986 if (T->isUnsigned())
2987 Extra.mangleSourceName("_UExtInt");
2988 else
2989 Extra.mangleSourceName("_ExtInt");
2990 Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumBits()),
2991 /*IsBoolean=*/false);
2992
2993 mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
2994}
2995
2996void MicrosoftCXXNameMangler::mangleType(const DependentExtIntType *T,
2997 Qualifiers, SourceRange Range) {
2998 DiagnosticsEngine &Diags = Context.getDiags();
2999 unsigned DiagID = Diags.getCustomDiagID(
3000 DiagnosticsEngine::Error, "cannot mangle this DependentExtInt type yet");
3001 Diags.Report(Range.getBegin(), DiagID) << Range;
3002}
3003
3004// <this-adjustment> ::= <no-adjustment> | <static-adjustment> |
3005// <virtual-adjustment>
3006// <no-adjustment> ::= A # private near
3007// ::= B # private far
3008// ::= I # protected near
3009// ::= J # protected far
3010// ::= Q # public near
3011// ::= R # public far
3012// <static-adjustment> ::= G <static-offset> # private near
3013// ::= H <static-offset> # private far
3014// ::= O <static-offset> # protected near
3015// ::= P <static-offset> # protected far
3016// ::= W <static-offset> # public near
3017// ::= X <static-offset> # public far
3018// <virtual-adjustment> ::= $0 <virtual-shift> <static-offset> # private near
3019// ::= $1 <virtual-shift> <static-offset> # private far
3020// ::= $2 <virtual-shift> <static-offset> # protected near
3021// ::= $3 <virtual-shift> <static-offset> # protected far
3022// ::= $4 <virtual-shift> <static-offset> # public near
3023// ::= $5 <virtual-shift> <static-offset> # public far
3024// <virtual-shift> ::= <vtordisp-shift> | <vtordispex-shift>
3025// <vtordisp-shift> ::= <offset-to-vtordisp>
3026// <vtordispex-shift> ::= <offset-to-vbptr> <vbase-offset-offset>
3027// <offset-to-vtordisp>
3028static void mangleThunkThisAdjustment(AccessSpecifier AS,
3029 const ThisAdjustment &Adjustment,
3030 MicrosoftCXXNameMangler &Mangler,
3031 raw_ostream &Out) {
3032 if (!Adjustment.Virtual.isEmpty()) {
3033 Out << '$';
3034 char AccessSpec;
3035 switch (AS) {
3036 case AS_none:
3037 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3037)
;
3038 case AS_private:
3039 AccessSpec = '0';
3040 break;
3041 case AS_protected:
3042 AccessSpec = '2';
3043 break;
3044 case AS_public:
3045 AccessSpec = '4';
3046 }
3047 if (Adjustment.Virtual.Microsoft.VBPtrOffset) {
3048 Out << 'R' << AccessSpec;
3049 Mangler.mangleNumber(
3050 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VBPtrOffset));
3051 Mangler.mangleNumber(
3052 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VBOffsetOffset));
3053 Mangler.mangleNumber(
3054 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VtordispOffset));
3055 Mangler.mangleNumber(static_cast<uint32_t>(Adjustment.NonVirtual));
3056 } else {
3057 Out << AccessSpec;
3058 Mangler.mangleNumber(
3059 static_cast<uint32_t>(Adjustment.Virtual.Microsoft.VtordispOffset));
3060 Mangler.mangleNumber(-static_cast<uint32_t>(Adjustment.NonVirtual));
3061 }
3062 } else if (Adjustment.NonVirtual != 0) {
3063 switch (AS) {
3064 case AS_none:
3065 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3065)
;
3066 case AS_private:
3067 Out << 'G';
3068 break;
3069 case AS_protected:
3070 Out << 'O';
3071 break;
3072 case AS_public:
3073 Out << 'W';
3074 }
3075 Mangler.mangleNumber(-static_cast<uint32_t>(Adjustment.NonVirtual));
3076 } else {
3077 switch (AS) {
3078 case AS_none:
3079 llvm_unreachable("Unsupported access specifier")::llvm::llvm_unreachable_internal("Unsupported access specifier"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3079)
;
3080 case AS_private:
3081 Out << 'A';
3082 break;
3083 case AS_protected:
3084 Out << 'I';
3085 break;
3086 case AS_public:
3087 Out << 'Q';
3088 }
3089 }
3090}
3091
3092void MicrosoftMangleContextImpl::mangleVirtualMemPtrThunk(
3093 const CXXMethodDecl *MD, const MethodVFTableLocation &ML,
3094 raw_ostream &Out) {
3095 msvc_hashing_ostream MHO(Out);
3096 MicrosoftCXXNameMangler Mangler(*this, MHO);
3097 Mangler.getStream() << '?';
3098 Mangler.mangleVirtualMemPtrThunk(MD, ML);
3099}
3100
3101void MicrosoftMangleContextImpl::mangleThunk(const CXXMethodDecl *MD,
3102 const ThunkInfo &Thunk,
3103 raw_ostream &Out) {
3104 msvc_hashing_ostream MHO(Out);
3105 MicrosoftCXXNameMangler Mangler(*this, MHO);
3106 Mangler.getStream() << '?';
3107 Mangler.mangleName(MD);
3108
3109 // Usually the thunk uses the access specifier of the new method, but if this
3110 // is a covariant return thunk, then MSVC always uses the public access
3111 // specifier, and we do the same.
3112 AccessSpecifier AS = Thunk.Return.isEmpty() ? MD->getAccess() : AS_public;
3113 mangleThunkThisAdjustment(AS, Thunk.This, Mangler, MHO);
3114
3115 if (!Thunk.Return.isEmpty())
3116 assert(Thunk.Method != nullptr &&((Thunk.Method != nullptr && "Thunk info should hold the overridee decl"
) ? static_cast<void> (0) : __assert_fail ("Thunk.Method != nullptr && \"Thunk info should hold the overridee decl\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3117, __PRETTY_FUNCTION__))
3117 "Thunk info should hold the overridee decl")((Thunk.Method != nullptr && "Thunk info should hold the overridee decl"
) ? static_cast<void> (0) : __assert_fail ("Thunk.Method != nullptr && \"Thunk info should hold the overridee decl\""
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3117, __PRETTY_FUNCTION__))
;
3118
3119 const CXXMethodDecl *DeclForFPT = Thunk.Method ? Thunk.Method : MD;
3120 Mangler.mangleFunctionType(
3121 DeclForFPT->getType()->castAs<FunctionProtoType>(), MD);
3122}
3123
3124void MicrosoftMangleContextImpl::mangleCXXDtorThunk(
3125 const CXXDestructorDecl *DD, CXXDtorType Type,
3126 const ThisAdjustment &Adjustment, raw_ostream &Out) {
3127 // FIXME: Actually, the dtor thunk should be emitted for vector deleting
3128 // dtors rather than scalar deleting dtors. Just use the vector deleting dtor
3129 // mangling manually until we support both deleting dtor types.
3130 assert(Type == Dtor_Deleting)((Type == Dtor_Deleting) ? static_cast<void> (0) : __assert_fail
("Type == Dtor_Deleting", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3130, __PRETTY_FUNCTION__))
;
3131 msvc_hashing_ostream MHO(Out);
3132 MicrosoftCXXNameMangler Mangler(*this, MHO, DD, Type);
3133 Mangler.getStream() << "??_E";
3134 Mangler.mangleName(DD->getParent());
3135 mangleThunkThisAdjustment(DD->getAccess(), Adjustment, Mangler, MHO);
3136 Mangler.mangleFunctionType(DD->getType()->castAs<FunctionProtoType>(), DD);
3137}
3138
3139void MicrosoftMangleContextImpl::mangleCXXVFTable(
3140 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3141 raw_ostream &Out) {
3142 // <mangled-name> ::= ?_7 <class-name> <storage-class>
3143 // <cvr-qualifiers> [<name>] @
3144 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3145 // is always '6' for vftables.
3146 msvc_hashing_ostream MHO(Out);
3147 MicrosoftCXXNameMangler Mangler(*this, MHO);
3148 if (Derived->hasAttr<DLLImportAttr>())
3149 Mangler.getStream() << "??_S";
3150 else
3151 Mangler.getStream() << "??_7";
3152 Mangler.mangleName(Derived);
3153 Mangler.getStream() << "6B"; // '6' for vftable, 'B' for const.
3154 for (const CXXRecordDecl *RD : BasePath)
3155 Mangler.mangleName(RD);
3156 Mangler.getStream() << '@';
3157}
3158
3159void MicrosoftMangleContextImpl::mangleCXXVBTable(
3160 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3161 raw_ostream &Out) {
3162 // <mangled-name> ::= ?_8 <class-name> <storage-class>
3163 // <cvr-qualifiers> [<name>] @
3164 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3165 // is always '7' for vbtables.
3166 msvc_hashing_ostream MHO(Out);
3167 MicrosoftCXXNameMangler Mangler(*this, MHO);
3168 Mangler.getStream() << "??_8";
3169 Mangler.mangleName(Derived);
3170 Mangler.getStream() << "7B"; // '7' for vbtable, 'B' for const.
3171 for (const CXXRecordDecl *RD : BasePath)
3172 Mangler.mangleName(RD);
3173 Mangler.getStream() << '@';
3174}
3175
3176void MicrosoftMangleContextImpl::mangleCXXRTTI(QualType T, raw_ostream &Out) {
3177 msvc_hashing_ostream MHO(Out);
3178 MicrosoftCXXNameMangler Mangler(*this, MHO);
3179 Mangler.getStream() << "??_R0";
3180 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3181 Mangler.getStream() << "@8";
3182}
3183
3184void MicrosoftMangleContextImpl::mangleCXXRTTIName(QualType T,
3185 raw_ostream &Out) {
3186 MicrosoftCXXNameMangler Mangler(*this, Out);
3187 Mangler.getStream() << '.';
3188 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3189}
3190
3191void MicrosoftMangleContextImpl::mangleCXXVirtualDisplacementMap(
3192 const CXXRecordDecl *SrcRD, const CXXRecordDecl *DstRD, raw_ostream &Out) {
3193 msvc_hashing_ostream MHO(Out);
3194 MicrosoftCXXNameMangler Mangler(*this, MHO);
3195 Mangler.getStream() << "??_K";
3196 Mangler.mangleName(SrcRD);
3197 Mangler.getStream() << "$C";
3198 Mangler.mangleName(DstRD);
3199}
3200
3201void MicrosoftMangleContextImpl::mangleCXXThrowInfo(QualType T, bool IsConst,
3202 bool IsVolatile,
3203 bool IsUnaligned,
3204 uint32_t NumEntries,
3205 raw_ostream &Out) {
3206 msvc_hashing_ostream MHO(Out);
3207 MicrosoftCXXNameMangler Mangler(*this, MHO);
3208 Mangler.getStream() << "_TI";
3209 if (IsConst)
3210 Mangler.getStream() << 'C';
3211 if (IsVolatile)
3212 Mangler.getStream() << 'V';
3213 if (IsUnaligned)
3214 Mangler.getStream() << 'U';
3215 Mangler.getStream() << NumEntries;
3216 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3217}
3218
3219void MicrosoftMangleContextImpl::mangleCXXCatchableTypeArray(
3220 QualType T, uint32_t NumEntries, raw_ostream &Out) {
3221 msvc_hashing_ostream MHO(Out);
3222 MicrosoftCXXNameMangler Mangler(*this, MHO);
3223 Mangler.getStream() << "_CTA";
3224 Mangler.getStream() << NumEntries;
3225 Mangler.mangleType(T, SourceRange(), MicrosoftCXXNameMangler::QMM_Result);
3226}
3227
3228void MicrosoftMangleContextImpl::mangleCXXCatchableType(
3229 QualType T, const CXXConstructorDecl *CD, CXXCtorType CT, uint32_t Size,
3230 uint32_t NVOffset, int32_t VBPtrOffset, uint32_t VBIndex,
3231 raw_ostream &Out) {
3232 MicrosoftCXXNameMangler Mangler(*this, Out);
3233 Mangler.getStream() << "_CT";
3234
3235 llvm::SmallString<64> RTTIMangling;
3236 {
3237 llvm::raw_svector_ostream Stream(RTTIMangling);
3238 msvc_hashing_ostream MHO(Stream);
3239 mangleCXXRTTI(T, MHO);
3240 }
3241 Mangler.getStream() << RTTIMangling;
3242
3243 // VS2015 and VS2017.1 omit the copy-constructor in the mangled name but
3244 // both older and newer versions include it.
3245 // FIXME: It is known that the Ctor is present in 2013, and in 2017.7
3246 // (_MSC_VER 1914) and newer, and that it's omitted in 2015 and 2017.4
3247 // (_MSC_VER 1911), but it's unknown when exactly it reappeared (1914?
3248 // Or 1912, 1913 aleady?).
3249 bool OmitCopyCtor = getASTContext().getLangOpts().isCompatibleWithMSVC(
3250 LangOptions::MSVC2015) &&
3251 !getASTContext().getLangOpts().isCompatibleWithMSVC(
3252 LangOptions::MSVC2017_7);
3253 llvm::SmallString<64> CopyCtorMangling;
3254 if (!OmitCopyCtor && CD) {
3255 llvm::raw_svector_ostream Stream(CopyCtorMangling);
3256 msvc_hashing_ostream MHO(Stream);
3257 mangleCXXName(GlobalDecl(CD, CT), MHO);
3258 }
3259 Mangler.getStream() << CopyCtorMangling;
3260
3261 Mangler.getStream() << Size;
3262 if (VBPtrOffset == -1) {
3263 if (NVOffset) {
3264 Mangler.getStream() << NVOffset;
3265 }
3266 } else {
3267 Mangler.getStream() << NVOffset;
3268 Mangler.getStream() << VBPtrOffset;
3269 Mangler.getStream() << VBIndex;
3270 }
3271}
3272
3273void MicrosoftMangleContextImpl::mangleCXXRTTIBaseClassDescriptor(
3274 const CXXRecordDecl *Derived, uint32_t NVOffset, int32_t VBPtrOffset,
3275 uint32_t VBTableOffset, uint32_t Flags, raw_ostream &Out) {
3276 msvc_hashing_ostream MHO(Out);
3277 MicrosoftCXXNameMangler Mangler(*this, MHO);
3278 Mangler.getStream() << "??_R1";
3279 Mangler.mangleNumber(NVOffset);
3280 Mangler.mangleNumber(VBPtrOffset);
3281 Mangler.mangleNumber(VBTableOffset);
3282 Mangler.mangleNumber(Flags);
3283 Mangler.mangleName(Derived);
3284 Mangler.getStream() << "8";
3285}
3286
3287void MicrosoftMangleContextImpl::mangleCXXRTTIBaseClassArray(
3288 const CXXRecordDecl *Derived, raw_ostream &Out) {
3289 msvc_hashing_ostream MHO(Out);
3290 MicrosoftCXXNameMangler Mangler(*this, MHO);
3291 Mangler.getStream() << "??_R2";
3292 Mangler.mangleName(Derived);
3293 Mangler.getStream() << "8";
3294}
3295
3296void MicrosoftMangleContextImpl::mangleCXXRTTIClassHierarchyDescriptor(
3297 const CXXRecordDecl *Derived, raw_ostream &Out) {
3298 msvc_hashing_ostream MHO(Out);
3299 MicrosoftCXXNameMangler Mangler(*this, MHO);
3300 Mangler.getStream() << "??_R3";
3301 Mangler.mangleName(Derived);
3302 Mangler.getStream() << "8";
3303}
3304
3305void MicrosoftMangleContextImpl::mangleCXXRTTICompleteObjectLocator(
3306 const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
3307 raw_ostream &Out) {
3308 // <mangled-name> ::= ?_R4 <class-name> <storage-class>
3309 // <cvr-qualifiers> [<name>] @
3310 // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
3311 // is always '6' for vftables.
3312 llvm::SmallString<64> VFTableMangling;
3313 llvm::raw_svector_ostream Stream(VFTableMangling);
3314 mangleCXXVFTable(Derived, BasePath, Stream);
3315
3316 if (VFTableMangling.startswith("??@")) {
3317 assert(VFTableMangling.endswith("@"))((VFTableMangling.endswith("@")) ? static_cast<void> (0
) : __assert_fail ("VFTableMangling.endswith(\"@\")", "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3317, __PRETTY_FUNCTION__))
;
3318 Out << VFTableMangling << "??_R4@";
3319 return;
3320 }
3321
3322 assert(VFTableMangling.startswith("??_7") ||((VFTableMangling.startswith("??_7") || VFTableMangling.startswith
("??_S")) ? static_cast<void> (0) : __assert_fail ("VFTableMangling.startswith(\"??_7\") || VFTableMangling.startswith(\"??_S\")"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3323, __PRETTY_FUNCTION__))
3323 VFTableMangling.startswith("??_S"))((VFTableMangling.startswith("??_7") || VFTableMangling.startswith
("??_S")) ? static_cast<void> (0) : __assert_fail ("VFTableMangling.startswith(\"??_7\") || VFTableMangling.startswith(\"??_S\")"
, "/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/clang/lib/AST/MicrosoftMangle.cpp"
, 3323, __PRETTY_FUNCTION__))
;
3324
3325 Out << "??_R4" << StringRef(VFTableMangling).drop_front(4);
3326}
3327
3328void MicrosoftMangleContextImpl::mangleSEHFilterExpression(
3329 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
3330 msvc_hashing_ostream MHO(Out);
3331 MicrosoftCXXNameMangler Mangler(*this, MHO);
3332 // The function body is in the same comdat as the function with the handler,
3333 // so the numbering here doesn't have to be the same across TUs.
3334 //
3335 // <mangled-name> ::= ?filt$ <filter-number> @0
3336 Mangler.getStream() << "?filt$" << SEHFilterIds[EnclosingDecl]++ << "@0@";
3337 Mangler.mangleName(EnclosingDecl);
3338}
3339
3340void MicrosoftMangleContextImpl::mangleSEHFinallyBlock(
3341 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
3342 msvc_hashing_ostream MHO(Out);
3343 MicrosoftCXXNameMangler Mangler(*this, MHO);
3344 // The function body is in the same comdat as the function with the handler,
3345 // so the numbering here doesn't have to be the same across TUs.
3346 //
3347 // <mangled-name> ::= ?fin$ <filter-number> @0
3348 Mangler.getStream() << "?fin$" << SEHFinallyIds[EnclosingDecl]++ << "@0@";
3349 Mangler.mangleName(EnclosingDecl);
3350}
3351
3352void MicrosoftMangleContextImpl::mangleTypeName(QualType T, raw_ostream &Out) {
3353 // This is just a made up unique string for the purposes of tbaa. undname
3354 // does *not* know how to demangle it.
3355 MicrosoftCXXNameMangler Mangler(*this, Out);
3356 Mangler.getStream() << '?';
3357 Mangler.mangleType(T, SourceRange());
3358}
3359
3360void MicrosoftMangleContextImpl::mangleReferenceTemporary(
3361 const VarDecl *VD, unsigned ManglingNumber, raw_ostream &Out) {
3362 msvc_hashing_ostream MHO(Out);
3363 MicrosoftCXXNameMangler Mangler(*this, MHO);
3364
3365 Mangler.getStream() << "?$RT" << ManglingNumber << '@';
3366 Mangler.mangle(VD, "");
1
Calling 'MicrosoftCXXNameMangler::mangle'
3367}
3368
3369void MicrosoftMangleContextImpl::mangleThreadSafeStaticGuardVariable(
3370 const VarDecl *VD, unsigned GuardNum, raw_ostream &Out) {
3371 msvc_hashing_ostream MHO(Out);
3372 MicrosoftCXXNameMangler Mangler(*this, MHO);
3373
3374 Mangler.getStream() << "?$TSS" << GuardNum << '@';
3375 Mangler.mangleNestedName(VD);
3376 Mangler.getStream() << "@4HA";
3377}
3378
3379void MicrosoftMangleContextImpl::mangleStaticGuardVariable(const VarDecl *VD,
3380 raw_ostream &Out) {
3381 // <guard-name> ::= ?_B <postfix> @5 <scope-depth>
3382 // ::= ?__J <postfix> @5 <scope-depth>
3383 // ::= ?$S <guard-num> @ <postfix> @4IA
3384
3385 // The first mangling is what MSVC uses to guard static locals in inline
3386 // functions. It uses a different mangling in external functions to support
3387 // guarding more than 32 variables. MSVC rejects inline functions with more
3388 // than 32 static locals. We don't fully implement the second mangling
3389 // because those guards are not externally visible, and instead use LLVM's
3390 // default renaming when creating a new guard variable.
3391 msvc_hashing_ostream MHO(Out);
3392 MicrosoftCXXNameMangler Mangler(*this, MHO);
3393
3394 bool Visible = VD->isExternallyVisible();
3395 if (Visible) {
3396 Mangler.getStream() << (VD->getTLSKind() ? "??__J" : "??_B");
3397 } else {
3398 Mangler.getStream() << "?$S1@";
3399 }
3400 unsigned ScopeDepth = 0;
3401 if (Visible && !getNextDiscriminator(VD, ScopeDepth))
3402 // If we do not have a discriminator and are emitting a guard variable for
3403 // use at global scope, then mangling the nested name will not be enough to
3404 // remove ambiguities.
3405 Mangler.mangle(VD, "");
3406 else
3407 Mangler.mangleNestedName(VD);
3408 Mangler.getStream() << (Visible ? "@5" : "@4IA");
3409 if (ScopeDepth)
3410 Mangler.mangleNumber(ScopeDepth);
3411}
3412
3413void MicrosoftMangleContextImpl::mangleInitFiniStub(const VarDecl *D,
3414 char CharCode,
3415 raw_ostream &Out) {
3416 msvc_hashing_ostream MHO(Out);
3417 MicrosoftCXXNameMangler Mangler(*this, MHO);
3418 Mangler.getStream() << "??__" << CharCode;
3419 if (D->isStaticDataMember()) {
3420 Mangler.getStream() << '?';
3421 Mangler.mangleName(D);
3422 Mangler.mangleVariableEncoding(D);
3423 Mangler.getStream() << "@@";
3424 } else {
3425 Mangler.mangleName(D);
3426 }
3427 // This is the function class mangling. These stubs are global, non-variadic,
3428 // cdecl functions that return void and take no args.
3429 Mangler.getStream() << "YAXXZ";
3430}
3431
3432void MicrosoftMangleContextImpl::mangleDynamicInitializer(const VarDecl *D,
3433 raw_ostream &Out) {
3434 // <initializer-name> ::= ?__E <name> YAXXZ
3435 mangleInitFiniStub(D, 'E', Out);
3436}
3437
3438void
3439MicrosoftMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D,
3440 raw_ostream &Out) {
3441 // <destructor-name> ::= ?__F <name> YAXXZ
3442 mangleInitFiniStub(D, 'F', Out);
3443}
3444
3445void MicrosoftMangleContextImpl::mangleStringLiteral(const StringLiteral *SL,
3446 raw_ostream &Out) {
3447 // <char-type> ::= 0 # char, char16_t, char32_t
3448 // # (little endian char data in mangling)
3449 // ::= 1 # wchar_t (big endian char data in mangling)
3450 //
3451 // <literal-length> ::= <non-negative integer> # the length of the literal
3452 //
3453 // <encoded-crc> ::= <hex digit>+ @ # crc of the literal including
3454 // # trailing null bytes
3455 //
3456 // <encoded-string> ::= <simple character> # uninteresting character
3457 // ::= '?$' <hex digit> <hex digit> # these two nibbles
3458 // # encode the byte for the
3459 // # character
3460 // ::= '?' [a-z] # \xe1 - \xfa
3461 // ::= '?' [A-Z] # \xc1 - \xda
3462 // ::= '?' [0-9] # [,/\:. \n\t'-]
3463 //
3464 // <literal> ::= '??_C@_' <char-type> <literal-length> <encoded-crc>
3465 // <encoded-string> '@'
3466 MicrosoftCXXNameMangler Mangler(*this, Out);
3467 Mangler.getStream() << "??_C@_";
3468
3469 // The actual string length might be different from that of the string literal
3470 // in cases like:
3471 // char foo[3] = "foobar";
3472 // char bar[42] = "foobar";
3473 // Where it is truncated or zero-padded to fit the array. This is the length
3474 // used for mangling, and any trailing null-bytes also need to be mangled.
3475 unsigned StringLength = getASTContext()
3476 .getAsConstantArrayType(SL->getType())
3477 ->getSize()
3478 .getZExtValue();
3479 unsigned StringByteLength = StringLength * SL->getCharByteWidth();
3480
3481 // <char-type>: The "kind" of string literal is encoded into the mangled name.
3482 if (SL->isWide())
3483 Mangler.getStream() << '1';
3484 else
3485 Mangler.getStream() << '0';
3486
3487 // <literal-length>: The next part of the mangled name consists of the length
3488 // of the string in bytes.
3489 Mangler.mangleNumber(StringByteLength);
3490
3491 auto GetLittleEndianByte = [&SL](unsigned Index) {
3492 unsigned CharByteWidth = SL->getCharByteWidth();
3493 if (Index / CharByteWidth >= SL->getLength())
3494 return static_cast<char>(0);
3495 uint32_t CodeUnit = SL->getCodeUnit(Index / CharByteWidth);
3496 unsigned OffsetInCodeUnit = Index % CharByteWidth;
3497 return static_cast<char>((CodeUnit >> (8 * OffsetInCodeUnit)) & 0xff);
3498 };
3499
3500 auto GetBigEndianByte = [&SL](unsigned Index) {
3501 unsigned CharByteWidth = SL->getCharByteWidth();
3502 if (Index / CharByteWidth >= SL->getLength())
3503 return static_cast<char>(0);
3504 uint32_t CodeUnit = SL->getCodeUnit(Index / CharByteWidth);
3505 unsigned OffsetInCodeUnit = (CharByteWidth - 1) - (Index % CharByteWidth);
3506 return static_cast<char>((CodeUnit >> (8 * OffsetInCodeUnit)) & 0xff);
3507 };
3508
3509 // CRC all the bytes of the StringLiteral.
3510 llvm::JamCRC JC;
3511 for (unsigned I = 0, E = StringByteLength; I != E; ++I)
3512 JC.update(GetLittleEndianByte(I));
3513
3514 // <encoded-crc>: The CRC is encoded utilizing the standard number mangling
3515 // scheme.
3516 Mangler.mangleNumber(JC.getCRC());
3517
3518 // <encoded-string>: The mangled name also contains the first 32 bytes
3519 // (including null-terminator bytes) of the encoded StringLiteral.
3520 // Each character is encoded by splitting them into bytes and then encoding
3521 // the constituent bytes.
3522 auto MangleByte = [&Mangler](char Byte) {
3523 // There are five different manglings for characters:
3524 // - [a-zA-Z0-9_$]: A one-to-one mapping.
3525 // - ?[a-z]: The range from \xe1 to \xfa.
3526 // - ?[A-Z]: The range from \xc1 to \xda.
3527 // - ?[0-9]: The set of [,/\:. \n\t'-].
3528 // - ?$XX: A fallback which maps nibbles.
3529 if (isIdentifierBody(Byte, /*AllowDollar=*/true)) {
3530 Mangler.getStream() << Byte;
3531 } else if (isLetter(Byte & 0x7f)) {
3532 Mangler.getStream() << '?' << static_cast<char>(Byte & 0x7f);
3533 } else {
3534 const char SpecialChars[] = {',', '/', '\\', ':', '.',
3535 ' ', '\n', '\t', '\'', '-'};
3536 const char *Pos = llvm::find(SpecialChars, Byte);
3537 if (Pos != std::end(SpecialChars)) {
3538 Mangler.getStream() << '?' << (Pos - std::begin(SpecialChars));
3539 } else {
3540 Mangler.getStream() << "?$";
3541 Mangler.getStream() << static_cast<char>('A' + ((Byte >> 4) & 0xf));
3542 Mangler.getStream() << static_cast<char>('A' + (Byte & 0xf));
3543 }
3544 }
3545 };
3546
3547 // Enforce our 32 bytes max, except wchar_t which gets 32 chars instead.
3548 unsigned MaxBytesToMangle = SL->isWide() ? 64U : 32U;
3549 unsigned NumBytesToMangle = std::min(MaxBytesToMangle, StringByteLength);
3550 for (unsigned I = 0; I != NumBytesToMangle; ++I) {
3551 if (SL->isWide())
3552 MangleByte(GetBigEndianByte(I));
3553 else
3554 MangleByte(GetLittleEndianByte(I));
3555 }
3556
3557 Mangler.getStream() << '@';
3558}
3559
3560MicrosoftMangleContext *
3561MicrosoftMangleContext::create(ASTContext &Context, DiagnosticsEngine &Diags) {
3562 return new MicrosoftMangleContextImpl(Context, Diags);
3563}

/build/llvm-toolchain-snapshot-12~++20200806111125+5446ec85070/build-llvm/tools/clang/include/clang/AST/TypeNodes.inc

1/*===- TableGen'erated file -------------------------------------*- C++ -*-===*\
2|* *|
3|* An x-macro database of Clang type nodes *|
4|* *|
5|* Automatically generated file, do not edit! *|
6|* *|
7\*===----------------------------------------------------------------------===*/
8
9#ifndef ABSTRACT_TYPE
10# define ABSTRACT_TYPE(Class, Base) TYPE(Class, Base)
11#endif
12#ifndef NON_CANONICAL_TYPE
13# define NON_CANONICAL_TYPE(Class, Base) TYPE(Class, Base)
14#endif
15#ifndef DEPENDENT_TYPE
16# define DEPENDENT_TYPE(Class, Base) TYPE(Class, Base)
17#endif
18#ifndef NON_CANONICAL_UNLESS_DEPENDENT_TYPE
19# define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) TYPE(Class, Base)
20#endif
21NON_CANONICAL_TYPE(Adjusted, Type)
22NON_CANONICAL_TYPE(Decayed, AdjustedType)
23ABSTRACT_TYPE(Array, Type)
24TYPE(ConstantArray, ArrayType)
25DEPENDENT_TYPE(DependentSizedArray, ArrayType)
26TYPE(IncompleteArray, ArrayType)
27TYPE(VariableArray, ArrayType)
28TYPE(Atomic, Type)
29NON_CANONICAL_TYPE(Attributed, Type)
30TYPE(BlockPointer, Type)
31TYPE(Builtin, Type)
32TYPE(Complex, Type)
33NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Decltype, Type)
34ABSTRACT_TYPE(Deduced, Type)
35TYPE(Auto, DeducedType)
36TYPE(DeducedTemplateSpecialization, DeducedType)
37DEPENDENT_TYPE(DependentAddressSpace, Type)
38DEPENDENT_TYPE(DependentExtInt, Type)
39DEPENDENT_TYPE(DependentName, Type)
40DEPENDENT_TYPE(DependentSizedExtVector, Type)
41DEPENDENT_TYPE(DependentTemplateSpecialization, Type)
42DEPENDENT_TYPE(DependentVector, Type)
43NON_CANONICAL_TYPE(Elaborated, Type)
44TYPE(ExtInt, Type)
45ABSTRACT_TYPE(Function, Type)
46TYPE(FunctionNoProto, FunctionType)
47TYPE(FunctionProto, FunctionType)
48DEPENDENT_TYPE(InjectedClassName, Type)
49NON_CANONICAL_TYPE(MacroQualified, Type)
50ABSTRACT_TYPE(Matrix, Type)
51TYPE(ConstantMatrix, MatrixType)
52DEPENDENT_TYPE(DependentSizedMatrix, MatrixType)
53TYPE(MemberPointer, Type)
54TYPE(ObjCObjectPointer, Type)
55TYPE(ObjCObject, Type)
20
'ty' is a 'ObjCObjectType'
21
Calling 'MicrosoftCXXNameMangler::mangleType'
56TYPE(ObjCInterface, ObjCObjectType)
57NON_CANONICAL_TYPE(ObjCTypeParam, Type)
58DEPENDENT_TYPE(PackExpansion, Type)
59NON_CANONICAL_TYPE(Paren, Type)
60TYPE(Pipe, Type)
61TYPE(Pointer, Type)
62ABSTRACT_TYPE(Reference, Type)
63TYPE(LValueReference, ReferenceType)
64TYPE(RValueReference, ReferenceType)
65DEPENDENT_TYPE(SubstTemplateTypeParmPack, Type)
66NON_CANONICAL_TYPE(SubstTemplateTypeParm, Type)
67ABSTRACT_TYPE(Tag, Type)
68TYPE(Enum, TagType)
69TYPE(Record, TagType)
70NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TemplateSpecialization, Type)
71DEPENDENT_TYPE(TemplateTypeParm, Type)
72NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TypeOfExpr, Type)
73NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TypeOf, Type)
74NON_CANONICAL_TYPE(Typedef, Type)
75NON_CANONICAL_UNLESS_DEPENDENT_TYPE(UnaryTransform, Type)
76DEPENDENT_TYPE(UnresolvedUsing, Type)
77TYPE(Vector, Type)
78TYPE(ExtVector, VectorType)
79#ifdef LAST_TYPE
80LAST_TYPE(ExtVector)
81#undef LAST_TYPE
82#endif
83#ifdef LEAF_TYPE
84LEAF_TYPE(Builtin)
85LEAF_TYPE(Enum)
86LEAF_TYPE(InjectedClassName)
87LEAF_TYPE(ObjCInterface)
88LEAF_TYPE(Record)
89LEAF_TYPE(TemplateTypeParm)
90#undef LEAF_TYPE
91#endif
92#undef TYPE
93#undef ABSTRACT_TYPE
94#undef ABSTRACT_TYPE
95#undef NON_CANONICAL_TYPE
96#undef DEPENDENT_TYPE
97#undef NON_CANONICAL_UNLESS_DEPENDENT_TYPE