Bug Summary

File:clang/lib/AST/ItaniumMangle.cpp
Warning:line 293, column 28
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ItaniumMangle.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 -tune-cpu generic -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~++20200917111122+b03c2b8395b/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/build-llvm/include -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/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~++20200917111122+b03c2b8395b/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b=. -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-2020-09-17-195756-12974-1 -x c++ /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp

/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp

1//===--- ItaniumMangle.cpp - Itanium C++ Name Mangling ----------*- C++ -*-===//
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// Implements C++ name mangling according to the Itanium C++ ABI,
10// which is used in GCC 3.2 and newer (and many compilers that are
11// ABI-compatible with GCC):
12//
13// http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
14//
15//===----------------------------------------------------------------------===//
16
17#include "clang/AST/Mangle.h"
18#include "clang/AST/ASTContext.h"
19#include "clang/AST/Attr.h"
20#include "clang/AST/Decl.h"
21#include "clang/AST/DeclCXX.h"
22#include "clang/AST/DeclObjC.h"
23#include "clang/AST/DeclOpenMP.h"
24#include "clang/AST/DeclTemplate.h"
25#include "clang/AST/Expr.h"
26#include "clang/AST/ExprConcepts.h"
27#include "clang/AST/ExprCXX.h"
28#include "clang/AST/ExprObjC.h"
29#include "clang/AST/TypeLoc.h"
30#include "clang/Basic/ABI.h"
31#include "clang/Basic/Module.h"
32#include "clang/Basic/SourceManager.h"
33#include "clang/Basic/TargetInfo.h"
34#include "llvm/ADT/StringExtras.h"
35#include "llvm/Support/ErrorHandling.h"
36#include "llvm/Support/raw_ostream.h"
37
38using namespace clang;
39
40namespace {
41
42/// Retrieve the declaration context that should be used when mangling the given
43/// declaration.
44static const DeclContext *getEffectiveDeclContext(const Decl *D) {
45 // The ABI assumes that lambda closure types that occur within
46 // default arguments live in the context of the function. However, due to
47 // the way in which Clang parses and creates function declarations, this is
48 // not the case: the lambda closure type ends up living in the context
49 // where the function itself resides, because the function declaration itself
50 // had not yet been created. Fix the context here.
51 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
52 if (RD->isLambda())
53 if (ParmVarDecl *ContextParam
54 = dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl()))
55 return ContextParam->getDeclContext();
56 }
57
58 // Perform the same check for block literals.
59 if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
60 if (ParmVarDecl *ContextParam
61 = dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl()))
62 return ContextParam->getDeclContext();
63 }
64
65 const DeclContext *DC = D->getDeclContext();
66 if (isa<CapturedDecl>(DC) || isa<OMPDeclareReductionDecl>(DC) ||
67 isa<OMPDeclareMapperDecl>(DC)) {
68 return getEffectiveDeclContext(cast<Decl>(DC));
69 }
70
71 if (const auto *VD = dyn_cast<VarDecl>(D))
72 if (VD->isExternC())
73 return VD->getASTContext().getTranslationUnitDecl();
74
75 if (const auto *FD = dyn_cast<FunctionDecl>(D))
76 if (FD->isExternC())
77 return FD->getASTContext().getTranslationUnitDecl();
78
79 return DC->getRedeclContext();
80}
81
82static const DeclContext *getEffectiveParentContext(const DeclContext *DC) {
83 return getEffectiveDeclContext(cast<Decl>(DC));
84}
85
86static bool isLocalContainerContext(const DeclContext *DC) {
87 return isa<FunctionDecl>(DC) || isa<ObjCMethodDecl>(DC) || isa<BlockDecl>(DC);
88}
89
90static const RecordDecl *GetLocalClassDecl(const Decl *D) {
91 const DeclContext *DC = getEffectiveDeclContext(D);
92 while (!DC->isNamespace() && !DC->isTranslationUnit()) {
93 if (isLocalContainerContext(DC))
94 return dyn_cast<RecordDecl>(D);
95 D = cast<Decl>(DC);
96 DC = getEffectiveDeclContext(D);
97 }
98 return nullptr;
99}
100
101static const FunctionDecl *getStructor(const FunctionDecl *fn) {
102 if (const FunctionTemplateDecl *ftd = fn->getPrimaryTemplate())
103 return ftd->getTemplatedDecl();
104
105 return fn;
106}
107
108static const NamedDecl *getStructor(const NamedDecl *decl) {
109 const FunctionDecl *fn = dyn_cast_or_null<FunctionDecl>(decl);
110 return (fn ? getStructor(fn) : decl);
111}
112
113static bool isLambda(const NamedDecl *ND) {
114 const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(ND);
115 if (!Record)
116 return false;
117
118 return Record->isLambda();
119}
120
121static const unsigned UnknownArity = ~0U;
122
123class ItaniumMangleContextImpl : public ItaniumMangleContext {
124 typedef std::pair<const DeclContext*, IdentifierInfo*> DiscriminatorKeyTy;
125 llvm::DenseMap<DiscriminatorKeyTy, unsigned> Discriminator;
126 llvm::DenseMap<const NamedDecl*, unsigned> Uniquifier;
127
128public:
129 explicit ItaniumMangleContextImpl(ASTContext &Context,
130 DiagnosticsEngine &Diags,
131 bool IsUniqueNameMangler)
132 : ItaniumMangleContext(Context, Diags, IsUniqueNameMangler) {}
133
134 /// @name Mangler Entry Points
135 /// @{
136
137 bool shouldMangleCXXName(const NamedDecl *D) override;
138 bool shouldMangleStringLiteral(const StringLiteral *) override {
139 return false;
140 }
141 void mangleCXXName(GlobalDecl GD, raw_ostream &) override;
142 void mangleThunk(const CXXMethodDecl *MD, const ThunkInfo &Thunk,
143 raw_ostream &) override;
144 void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type,
145 const ThisAdjustment &ThisAdjustment,
146 raw_ostream &) override;
147 void mangleReferenceTemporary(const VarDecl *D, unsigned ManglingNumber,
148 raw_ostream &) override;
149 void mangleCXXVTable(const CXXRecordDecl *RD, raw_ostream &) override;
150 void mangleCXXVTT(const CXXRecordDecl *RD, raw_ostream &) override;
151 void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset,
152 const CXXRecordDecl *Type, raw_ostream &) override;
153 void mangleCXXRTTI(QualType T, raw_ostream &) override;
154 void mangleCXXRTTIName(QualType T, raw_ostream &) override;
155 void mangleTypeName(QualType T, raw_ostream &) override;
156
157 void mangleCXXCtorComdat(const CXXConstructorDecl *D, raw_ostream &) override;
158 void mangleCXXDtorComdat(const CXXDestructorDecl *D, raw_ostream &) override;
159 void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &) override;
160 void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override;
161 void mangleDynamicAtExitDestructor(const VarDecl *D,
162 raw_ostream &Out) override;
163 void mangleDynamicStermFinalizer(const VarDecl *D, raw_ostream &Out) override;
164 void mangleSEHFilterExpression(const NamedDecl *EnclosingDecl,
165 raw_ostream &Out) override;
166 void mangleSEHFinallyBlock(const NamedDecl *EnclosingDecl,
167 raw_ostream &Out) override;
168 void mangleItaniumThreadLocalInit(const VarDecl *D, raw_ostream &) override;
169 void mangleItaniumThreadLocalWrapper(const VarDecl *D,
170 raw_ostream &) override;
171
172 void mangleStringLiteral(const StringLiteral *, raw_ostream &) override;
173
174 void mangleLambdaSig(const CXXRecordDecl *Lambda, raw_ostream &) override;
175
176 bool getNextDiscriminator(const NamedDecl *ND, unsigned &disc) {
177 // Lambda closure types are already numbered.
178 if (isLambda(ND))
179 return false;
180
181 // Anonymous tags are already numbered.
182 if (const TagDecl *Tag = dyn_cast<TagDecl>(ND)) {
183 if (Tag->getName().empty() && !Tag->getTypedefNameForAnonDecl())
184 return false;
185 }
186
187 // Use the canonical number for externally visible decls.
188 if (ND->isExternallyVisible()) {
189 unsigned discriminator = getASTContext().getManglingNumber(ND);
190 if (discriminator == 1)
191 return false;
192 disc = discriminator - 2;
193 return true;
194 }
195
196 // Make up a reasonable number for internal decls.
197 unsigned &discriminator = Uniquifier[ND];
198 if (!discriminator) {
199 const DeclContext *DC = getEffectiveDeclContext(ND);
200 discriminator = ++Discriminator[std::make_pair(DC, ND->getIdentifier())];
201 }
202 if (discriminator == 1)
203 return false;
204 disc = discriminator-2;
205 return true;
206 }
207 /// @}
208};
209
210/// Manage the mangling of a single name.
211class CXXNameMangler {
212 ItaniumMangleContextImpl &Context;
213 raw_ostream &Out;
214 bool NullOut = false;
215 /// In the "DisableDerivedAbiTags" mode derived ABI tags are not calculated.
216 /// This mode is used when mangler creates another mangler recursively to
217 /// calculate ABI tags for the function return value or the variable type.
218 /// Also it is required to avoid infinite recursion in some cases.
219 bool DisableDerivedAbiTags = false;
220
221 /// The "structor" is the top-level declaration being mangled, if
222 /// that's not a template specialization; otherwise it's the pattern
223 /// for that specialization.
224 const NamedDecl *Structor;
225 unsigned StructorType;
226
227 /// The next substitution sequence number.
228 unsigned SeqID;
229
230 class FunctionTypeDepthState {
231 unsigned Bits;
232
233 enum { InResultTypeMask = 1 };
234
235 public:
236 FunctionTypeDepthState() : Bits(0) {}
237
238 /// The number of function types we're inside.
239 unsigned getDepth() const {
240 return Bits >> 1;
241 }
242
243 /// True if we're in the return type of the innermost function type.
244 bool isInResultType() const {
245 return Bits & InResultTypeMask;
246 }
247
248 FunctionTypeDepthState push() {
249 FunctionTypeDepthState tmp = *this;
250 Bits = (Bits & ~InResultTypeMask) + 2;
251 return tmp;
252 }
253
254 void enterResultType() {
255 Bits |= InResultTypeMask;
256 }
257
258 void leaveResultType() {
259 Bits &= ~InResultTypeMask;
260 }
261
262 void pop(FunctionTypeDepthState saved) {
263 assert(getDepth() == saved.getDepth() + 1)((getDepth() == saved.getDepth() + 1) ? static_cast<void>
(0) : __assert_fail ("getDepth() == saved.getDepth() + 1", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 263, __PRETTY_FUNCTION__))
;
264 Bits = saved.Bits;
265 }
266
267 } FunctionTypeDepth;
268
269 // abi_tag is a gcc attribute, taking one or more strings called "tags".
270 // The goal is to annotate against which version of a library an object was
271 // built and to be able to provide backwards compatibility ("dual abi").
272 // For more information see docs/ItaniumMangleAbiTags.rst.
273 typedef SmallVector<StringRef, 4> AbiTagList;
274
275 // State to gather all implicit and explicit tags used in a mangled name.
276 // Must always have an instance of this while emitting any name to keep
277 // track.
278 class AbiTagState final {
279 public:
280 explicit AbiTagState(AbiTagState *&Head) : LinkHead(Head) {
281 Parent = LinkHead;
282 LinkHead = this;
283 }
284
285 // No copy, no move.
286 AbiTagState(const AbiTagState &) = delete;
287 AbiTagState &operator=(const AbiTagState &) = delete;
288
289 ~AbiTagState() { pop(); }
290
291 void write(raw_ostream &Out, const NamedDecl *ND,
292 const AbiTagList *AdditionalAbiTags) {
293 ND = cast<NamedDecl>(ND->getCanonicalDecl());
19
Called C++ object pointer is null
294 if (!isa<FunctionDecl>(ND) && !isa<VarDecl>(ND)) {
295 assert(((!AdditionalAbiTags && "only function and variables need a list of additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"only function and variables need a list of additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 297, __PRETTY_FUNCTION__))
296 !AdditionalAbiTags &&((!AdditionalAbiTags && "only function and variables need a list of additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"only function and variables need a list of additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 297, __PRETTY_FUNCTION__))
297 "only function and variables need a list of additional abi tags")((!AdditionalAbiTags && "only function and variables need a list of additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"only function and variables need a list of additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 297, __PRETTY_FUNCTION__))
;
298 if (const auto *NS = dyn_cast<NamespaceDecl>(ND)) {
299 if (const auto *AbiTag = NS->getAttr<AbiTagAttr>()) {
300 UsedAbiTags.insert(UsedAbiTags.end(), AbiTag->tags().begin(),
301 AbiTag->tags().end());
302 }
303 // Don't emit abi tags for namespaces.
304 return;
305 }
306 }
307
308 AbiTagList TagList;
309 if (const auto *AbiTag = ND->getAttr<AbiTagAttr>()) {
310 UsedAbiTags.insert(UsedAbiTags.end(), AbiTag->tags().begin(),
311 AbiTag->tags().end());
312 TagList.insert(TagList.end(), AbiTag->tags().begin(),
313 AbiTag->tags().end());
314 }
315
316 if (AdditionalAbiTags) {
317 UsedAbiTags.insert(UsedAbiTags.end(), AdditionalAbiTags->begin(),
318 AdditionalAbiTags->end());
319 TagList.insert(TagList.end(), AdditionalAbiTags->begin(),
320 AdditionalAbiTags->end());
321 }
322
323 llvm::sort(TagList);
324 TagList.erase(std::unique(TagList.begin(), TagList.end()), TagList.end());
325
326 writeSortedUniqueAbiTags(Out, TagList);
327 }
328
329 const AbiTagList &getUsedAbiTags() const { return UsedAbiTags; }
330 void setUsedAbiTags(const AbiTagList &AbiTags) {
331 UsedAbiTags = AbiTags;
332 }
333
334 const AbiTagList &getEmittedAbiTags() const {
335 return EmittedAbiTags;
336 }
337
338 const AbiTagList &getSortedUniqueUsedAbiTags() {
339 llvm::sort(UsedAbiTags);
340 UsedAbiTags.erase(std::unique(UsedAbiTags.begin(), UsedAbiTags.end()),
341 UsedAbiTags.end());
342 return UsedAbiTags;
343 }
344
345 private:
346 //! All abi tags used implicitly or explicitly.
347 AbiTagList UsedAbiTags;
348 //! All explicit abi tags (i.e. not from namespace).
349 AbiTagList EmittedAbiTags;
350
351 AbiTagState *&LinkHead;
352 AbiTagState *Parent = nullptr;
353
354 void pop() {
355 assert(LinkHead == this &&((LinkHead == this && "abi tag link head must point to us on destruction"
) ? static_cast<void> (0) : __assert_fail ("LinkHead == this && \"abi tag link head must point to us on destruction\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 356, __PRETTY_FUNCTION__))
356 "abi tag link head must point to us on destruction")((LinkHead == this && "abi tag link head must point to us on destruction"
) ? static_cast<void> (0) : __assert_fail ("LinkHead == this && \"abi tag link head must point to us on destruction\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 356, __PRETTY_FUNCTION__))
;
357 if (Parent) {
358 Parent->UsedAbiTags.insert(Parent->UsedAbiTags.end(),
359 UsedAbiTags.begin(), UsedAbiTags.end());
360 Parent->EmittedAbiTags.insert(Parent->EmittedAbiTags.end(),
361 EmittedAbiTags.begin(),
362 EmittedAbiTags.end());
363 }
364 LinkHead = Parent;
365 }
366
367 void writeSortedUniqueAbiTags(raw_ostream &Out, const AbiTagList &AbiTags) {
368 for (const auto &Tag : AbiTags) {
369 EmittedAbiTags.push_back(Tag);
370 Out << "B";
371 Out << Tag.size();
372 Out << Tag;
373 }
374 }
375 };
376
377 AbiTagState *AbiTags = nullptr;
378 AbiTagState AbiTagsRoot;
379
380 llvm::DenseMap<uintptr_t, unsigned> Substitutions;
381 llvm::DenseMap<StringRef, unsigned> ModuleSubstitutions;
382
383 ASTContext &getASTContext() const { return Context.getASTContext(); }
384
385public:
386 CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_,
387 const NamedDecl *D = nullptr, bool NullOut_ = false)
388 : Context(C), Out(Out_), NullOut(NullOut_), Structor(getStructor(D)),
389 StructorType(0), SeqID(0), AbiTagsRoot(AbiTags) {
390 // These can't be mangled without a ctor type or dtor type.
391 assert(!D || (!isa<CXXDestructorDecl>(D) &&((!D || (!isa<CXXDestructorDecl>(D) && !isa<
CXXConstructorDecl>(D))) ? static_cast<void> (0) : __assert_fail
("!D || (!isa<CXXDestructorDecl>(D) && !isa<CXXConstructorDecl>(D))"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 392, __PRETTY_FUNCTION__))
392 !isa<CXXConstructorDecl>(D)))((!D || (!isa<CXXDestructorDecl>(D) && !isa<
CXXConstructorDecl>(D))) ? static_cast<void> (0) : __assert_fail
("!D || (!isa<CXXDestructorDecl>(D) && !isa<CXXConstructorDecl>(D))"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 392, __PRETTY_FUNCTION__))
;
393 }
394 CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_,
395 const CXXConstructorDecl *D, CXXCtorType Type)
396 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
397 SeqID(0), AbiTagsRoot(AbiTags) { }
398 CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_,
399 const CXXDestructorDecl *D, CXXDtorType Type)
400 : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
401 SeqID(0), AbiTagsRoot(AbiTags) { }
402
403 CXXNameMangler(CXXNameMangler &Outer, raw_ostream &Out_)
404 : Context(Outer.Context), Out(Out_), NullOut(false),
405 Structor(Outer.Structor), StructorType(Outer.StructorType),
406 SeqID(Outer.SeqID), FunctionTypeDepth(Outer.FunctionTypeDepth),
407 AbiTagsRoot(AbiTags), Substitutions(Outer.Substitutions) {}
408
409 CXXNameMangler(CXXNameMangler &Outer, llvm::raw_null_ostream &Out_)
410 : Context(Outer.Context), Out(Out_), NullOut(true),
411 Structor(Outer.Structor), StructorType(Outer.StructorType),
412 SeqID(Outer.SeqID), FunctionTypeDepth(Outer.FunctionTypeDepth),
413 AbiTagsRoot(AbiTags), Substitutions(Outer.Substitutions) {}
414
415 raw_ostream &getStream() { return Out; }
416
417 void disableDerivedAbiTags() { DisableDerivedAbiTags = true; }
418 static bool shouldHaveAbiTags(ItaniumMangleContextImpl &C, const VarDecl *VD);
419
420 void mangle(GlobalDecl GD);
421 void mangleCallOffset(int64_t NonVirtual, int64_t Virtual);
422 void mangleNumber(const llvm::APSInt &I);
423 void mangleNumber(int64_t Number);
424 void mangleFloat(const llvm::APFloat &F);
425 void mangleFunctionEncoding(GlobalDecl GD);
426 void mangleSeqID(unsigned SeqID);
427 void mangleName(GlobalDecl GD);
428 void mangleType(QualType T);
429 void mangleNameOrStandardSubstitution(const NamedDecl *ND);
430 void mangleLambdaSig(const CXXRecordDecl *Lambda);
431
432private:
433
434 bool mangleSubstitution(const NamedDecl *ND);
435 bool mangleSubstitution(QualType T);
436 bool mangleSubstitution(TemplateName Template);
437 bool mangleSubstitution(uintptr_t Ptr);
438
439 void mangleExistingSubstitution(TemplateName name);
440
441 bool mangleStandardSubstitution(const NamedDecl *ND);
442
443 void addSubstitution(const NamedDecl *ND) {
444 ND = cast<NamedDecl>(ND->getCanonicalDecl());
445
446 addSubstitution(reinterpret_cast<uintptr_t>(ND));
447 }
448 void addSubstitution(QualType T);
449 void addSubstitution(TemplateName Template);
450 void addSubstitution(uintptr_t Ptr);
451 // Destructive copy substitutions from other mangler.
452 void extendSubstitutions(CXXNameMangler* Other);
453
454 void mangleUnresolvedPrefix(NestedNameSpecifier *qualifier,
455 bool recursive = false);
456 void mangleUnresolvedName(NestedNameSpecifier *qualifier,
457 DeclarationName name,
458 const TemplateArgumentLoc *TemplateArgs,
459 unsigned NumTemplateArgs,
460 unsigned KnownArity = UnknownArity);
461
462 void mangleFunctionEncodingBareType(const FunctionDecl *FD);
463
464 void mangleNameWithAbiTags(GlobalDecl GD,
465 const AbiTagList *AdditionalAbiTags);
466 void mangleModuleName(const Module *M);
467 void mangleModuleNamePrefix(StringRef Name);
468 void mangleTemplateName(const TemplateDecl *TD,
469 const TemplateArgument *TemplateArgs,
470 unsigned NumTemplateArgs);
471 void mangleUnqualifiedName(GlobalDecl GD,
472 const AbiTagList *AdditionalAbiTags) {
473 mangleUnqualifiedName(GD, cast<NamedDecl>(GD.getDecl())->getDeclName(), UnknownArity,
474 AdditionalAbiTags);
475 }
476 void mangleUnqualifiedName(GlobalDecl GD, DeclarationName Name,
477 unsigned KnownArity,
478 const AbiTagList *AdditionalAbiTags);
479 void mangleUnscopedName(GlobalDecl GD,
480 const AbiTagList *AdditionalAbiTags);
481 void mangleUnscopedTemplateName(GlobalDecl GD,
482 const AbiTagList *AdditionalAbiTags);
483 void mangleUnscopedTemplateName(TemplateName,
484 const AbiTagList *AdditionalAbiTags);
485 void mangleSourceName(const IdentifierInfo *II);
486 void mangleRegCallName(const IdentifierInfo *II);
487 void mangleDeviceStubName(const IdentifierInfo *II);
488 void mangleSourceNameWithAbiTags(
489 const NamedDecl *ND, const AbiTagList *AdditionalAbiTags = nullptr);
490 void mangleLocalName(GlobalDecl GD,
491 const AbiTagList *AdditionalAbiTags);
492 void mangleBlockForPrefix(const BlockDecl *Block);
493 void mangleUnqualifiedBlock(const BlockDecl *Block);
494 void mangleTemplateParamDecl(const NamedDecl *Decl);
495 void mangleLambda(const CXXRecordDecl *Lambda);
496 void mangleNestedName(GlobalDecl GD, const DeclContext *DC,
497 const AbiTagList *AdditionalAbiTags,
498 bool NoFunction=false);
499 void mangleNestedName(const TemplateDecl *TD,
500 const TemplateArgument *TemplateArgs,
501 unsigned NumTemplateArgs);
502 void manglePrefix(NestedNameSpecifier *qualifier);
503 void manglePrefix(const DeclContext *DC, bool NoFunction=false);
504 void manglePrefix(QualType type);
505 void mangleTemplatePrefix(GlobalDecl GD, bool NoFunction=false);
506 void mangleTemplatePrefix(TemplateName Template);
507 bool mangleUnresolvedTypeOrSimpleId(QualType DestroyedType,
508 StringRef Prefix = "");
509 void mangleOperatorName(DeclarationName Name, unsigned Arity);
510 void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity);
511 void mangleVendorQualifier(StringRef qualifier);
512 void mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST = nullptr);
513 void mangleRefQualifier(RefQualifierKind RefQualifier);
514
515 void mangleObjCMethodName(const ObjCMethodDecl *MD);
516
517 // Declare manglers for every type class.
518#define ABSTRACT_TYPE(CLASS, PARENT)
519#define NON_CANONICAL_TYPE(CLASS, PARENT)
520#define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T);
521#include "clang/AST/TypeNodes.inc"
522
523 void mangleType(const TagType*);
524 void mangleType(TemplateName);
525 static StringRef getCallingConvQualifierName(CallingConv CC);
526 void mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo info);
527 void mangleExtFunctionInfo(const FunctionType *T);
528 void mangleBareFunctionType(const FunctionProtoType *T, bool MangleReturnType,
529 const FunctionDecl *FD = nullptr);
530 void mangleNeonVectorType(const VectorType *T);
531 void mangleNeonVectorType(const DependentVectorType *T);
532 void mangleAArch64NeonVectorType(const VectorType *T);
533 void mangleAArch64NeonVectorType(const DependentVectorType *T);
534 void mangleAArch64FixedSveVectorType(const VectorType *T);
535 void mangleAArch64FixedSveVectorType(const DependentVectorType *T);
536
537 void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value);
538 void mangleMemberExprBase(const Expr *base, bool isArrow);
539 void mangleMemberExpr(const Expr *base, bool isArrow,
540 NestedNameSpecifier *qualifier,
541 NamedDecl *firstQualifierLookup,
542 DeclarationName name,
543 const TemplateArgumentLoc *TemplateArgs,
544 unsigned NumTemplateArgs,
545 unsigned knownArity);
546 void mangleCastExpression(const Expr *E, StringRef CastEncoding);
547 void mangleInitListElements(const InitListExpr *InitList);
548 void mangleDeclRefExpr(const NamedDecl *D);
549 void mangleExpression(const Expr *E, unsigned Arity = UnknownArity);
550 void mangleCXXCtorType(CXXCtorType T, const CXXRecordDecl *InheritedFrom);
551 void mangleCXXDtorType(CXXDtorType T);
552
553 void mangleTemplateArgs(const TemplateArgumentLoc *TemplateArgs,
554 unsigned NumTemplateArgs);
555 void mangleTemplateArgs(const TemplateArgument *TemplateArgs,
556 unsigned NumTemplateArgs);
557 void mangleTemplateArgs(const TemplateArgumentList &AL);
558 void mangleTemplateArg(TemplateArgument A);
559
560 void mangleTemplateParameter(unsigned Depth, unsigned Index);
561
562 void mangleFunctionParam(const ParmVarDecl *parm);
563
564 void writeAbiTags(const NamedDecl *ND,
565 const AbiTagList *AdditionalAbiTags);
566
567 // Returns sorted unique list of ABI tags.
568 AbiTagList makeFunctionReturnTypeTags(const FunctionDecl *FD);
569 // Returns sorted unique list of ABI tags.
570 AbiTagList makeVariableTypeTags(const VarDecl *VD);
571};
572
573}
574
575bool ItaniumMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) {
576 const FunctionDecl *FD = dyn_cast<FunctionDecl>(D);
577 if (FD) {
578 LanguageLinkage L = FD->getLanguageLinkage();
579 // Overloadable functions need mangling.
580 if (FD->hasAttr<OverloadableAttr>())
581 return true;
582
583 // "main" is not mangled.
584 if (FD->isMain())
585 return false;
586
587 // The Windows ABI expects that we would never mangle "typical"
588 // user-defined entry points regardless of visibility or freestanding-ness.
589 //
590 // N.B. This is distinct from asking about "main". "main" has a lot of
591 // special rules associated with it in the standard while these
592 // user-defined entry points are outside of the purview of the standard.
593 // For example, there can be only one definition for "main" in a standards
594 // compliant program; however nothing forbids the existence of wmain and
595 // WinMain in the same translation unit.
596 if (FD->isMSVCRTEntryPoint())
597 return false;
598
599 // C++ functions and those whose names are not a simple identifier need
600 // mangling.
601 if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage)
602 return true;
603
604 // C functions are not mangled.
605 if (L == CLanguageLinkage)
606 return false;
607 }
608
609 // Otherwise, no mangling is done outside C++ mode.
610 if (!getASTContext().getLangOpts().CPlusPlus)
611 return false;
612
613 const VarDecl *VD = dyn_cast<VarDecl>(D);
614 if (VD && !isa<DecompositionDecl>(D)) {
615 // C variables are not mangled.
616 if (VD->isExternC())
617 return false;
618
619 // Variables at global scope with non-internal linkage are not mangled
620 const DeclContext *DC = getEffectiveDeclContext(D);
621 // Check for extern variable declared locally.
622 if (DC->isFunctionOrMethod() && D->hasLinkage())
623 while (!DC->isNamespace() && !DC->isTranslationUnit())
624 DC = getEffectiveParentContext(DC);
625 if (DC->isTranslationUnit() && D->getFormalLinkage() != InternalLinkage &&
626 !CXXNameMangler::shouldHaveAbiTags(*this, VD) &&
627 !isa<VarTemplateSpecializationDecl>(D))
628 return false;
629 }
630
631 return true;
632}
633
634void CXXNameMangler::writeAbiTags(const NamedDecl *ND,
635 const AbiTagList *AdditionalAbiTags) {
636 assert(AbiTags && "require AbiTagState")((AbiTags && "require AbiTagState") ? static_cast<
void> (0) : __assert_fail ("AbiTags && \"require AbiTagState\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 636, __PRETTY_FUNCTION__))
;
13
Assuming field 'AbiTags' is non-null
14
'?' condition is true
637 AbiTags->write(Out, ND, DisableDerivedAbiTags ? nullptr : AdditionalAbiTags);
15
Assuming field 'DisableDerivedAbiTags' is true
16
'?' condition is true
17
Passing null pointer value via 2nd parameter 'ND'
18
Calling 'AbiTagState::write'
638}
639
640void CXXNameMangler::mangleSourceNameWithAbiTags(
641 const NamedDecl *ND, const AbiTagList *AdditionalAbiTags) {
642 mangleSourceName(ND->getIdentifier());
643 writeAbiTags(ND, AdditionalAbiTags);
644}
645
646void CXXNameMangler::mangle(GlobalDecl GD) {
647 // <mangled-name> ::= _Z <encoding>
648 // ::= <data name>
649 // ::= <special-name>
650 Out << "_Z";
651 if (isa<FunctionDecl>(GD.getDecl()))
652 mangleFunctionEncoding(GD);
653 else if (const VarDecl *VD = dyn_cast<VarDecl>(GD.getDecl()))
654 mangleName(VD);
655 else if (const IndirectFieldDecl *IFD =
656 dyn_cast<IndirectFieldDecl>(GD.getDecl()))
657 mangleName(IFD->getAnonField());
658 else if (const FieldDecl *FD = dyn_cast<FieldDecl>(GD.getDecl()))
659 mangleName(FD);
660 else if (const MSGuidDecl *GuidD = dyn_cast<MSGuidDecl>(GD.getDecl()))
661 mangleName(GuidD);
662 else if (const BindingDecl *BD = dyn_cast<BindingDecl>(GD.getDecl()))
663 mangleName(BD);
664 else
665 llvm_unreachable("unexpected kind of global decl")::llvm::llvm_unreachable_internal("unexpected kind of global decl"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 665)
;
666}
667
668void CXXNameMangler::mangleFunctionEncoding(GlobalDecl GD) {
669 const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
670 // <encoding> ::= <function name> <bare-function-type>
671
672 // Don't mangle in the type if this isn't a decl we should typically mangle.
673 if (!Context.shouldMangleDeclName(FD)) {
674 mangleName(GD);
675 return;
676 }
677
678 AbiTagList ReturnTypeAbiTags = makeFunctionReturnTypeTags(FD);
679 if (ReturnTypeAbiTags.empty()) {
680 // There are no tags for return type, the simplest case.
681 mangleName(GD);
682 mangleFunctionEncodingBareType(FD);
683 return;
684 }
685
686 // Mangle function name and encoding to temporary buffer.
687 // We have to output name and encoding to the same mangler to get the same
688 // substitution as it will be in final mangling.
689 SmallString<256> FunctionEncodingBuf;
690 llvm::raw_svector_ostream FunctionEncodingStream(FunctionEncodingBuf);
691 CXXNameMangler FunctionEncodingMangler(*this, FunctionEncodingStream);
692 // Output name of the function.
693 FunctionEncodingMangler.disableDerivedAbiTags();
694 FunctionEncodingMangler.mangleNameWithAbiTags(FD, nullptr);
695
696 // Remember length of the function name in the buffer.
697 size_t EncodingPositionStart = FunctionEncodingStream.str().size();
698 FunctionEncodingMangler.mangleFunctionEncodingBareType(FD);
699
700 // Get tags from return type that are not present in function name or
701 // encoding.
702 const AbiTagList &UsedAbiTags =
703 FunctionEncodingMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags();
704 AbiTagList AdditionalAbiTags(ReturnTypeAbiTags.size());
705 AdditionalAbiTags.erase(
706 std::set_difference(ReturnTypeAbiTags.begin(), ReturnTypeAbiTags.end(),
707 UsedAbiTags.begin(), UsedAbiTags.end(),
708 AdditionalAbiTags.begin()),
709 AdditionalAbiTags.end());
710
711 // Output name with implicit tags and function encoding from temporary buffer.
712 mangleNameWithAbiTags(FD, &AdditionalAbiTags);
713 Out << FunctionEncodingStream.str().substr(EncodingPositionStart);
714
715 // Function encoding could create new substitutions so we have to add
716 // temp mangled substitutions to main mangler.
717 extendSubstitutions(&FunctionEncodingMangler);
718}
719
720void CXXNameMangler::mangleFunctionEncodingBareType(const FunctionDecl *FD) {
721 if (FD->hasAttr<EnableIfAttr>()) {
722 FunctionTypeDepthState Saved = FunctionTypeDepth.push();
723 Out << "Ua9enable_ifI";
724 for (AttrVec::const_iterator I = FD->getAttrs().begin(),
725 E = FD->getAttrs().end();
726 I != E; ++I) {
727 EnableIfAttr *EIA = dyn_cast<EnableIfAttr>(*I);
728 if (!EIA)
729 continue;
730 Out << 'X';
731 mangleExpression(EIA->getCond());
732 Out << 'E';
733 }
734 Out << 'E';
735 FunctionTypeDepth.pop(Saved);
736 }
737
738 // When mangling an inheriting constructor, the bare function type used is
739 // that of the inherited constructor.
740 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD))
741 if (auto Inherited = CD->getInheritedConstructor())
742 FD = Inherited.getConstructor();
743
744 // Whether the mangling of a function type includes the return type depends on
745 // the context and the nature of the function. The rules for deciding whether
746 // the return type is included are:
747 //
748 // 1. Template functions (names or types) have return types encoded, with
749 // the exceptions listed below.
750 // 2. Function types not appearing as part of a function name mangling,
751 // e.g. parameters, pointer types, etc., have return type encoded, with the
752 // exceptions listed below.
753 // 3. Non-template function names do not have return types encoded.
754 //
755 // The exceptions mentioned in (1) and (2) above, for which the return type is
756 // never included, are
757 // 1. Constructors.
758 // 2. Destructors.
759 // 3. Conversion operator functions, e.g. operator int.
760 bool MangleReturnType = false;
761 if (FunctionTemplateDecl *PrimaryTemplate = FD->getPrimaryTemplate()) {
762 if (!(isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD) ||
763 isa<CXXConversionDecl>(FD)))
764 MangleReturnType = true;
765
766 // Mangle the type of the primary template.
767 FD = PrimaryTemplate->getTemplatedDecl();
768 }
769
770 mangleBareFunctionType(FD->getType()->castAs<FunctionProtoType>(),
771 MangleReturnType, FD);
772}
773
774static const DeclContext *IgnoreLinkageSpecDecls(const DeclContext *DC) {
775 while (isa<LinkageSpecDecl>(DC)) {
776 DC = getEffectiveParentContext(DC);
777 }
778
779 return DC;
780}
781
782/// Return whether a given namespace is the 'std' namespace.
783static bool isStd(const NamespaceDecl *NS) {
784 if (!IgnoreLinkageSpecDecls(getEffectiveParentContext(NS))
785 ->isTranslationUnit())
786 return false;
787
788 const IdentifierInfo *II = NS->getOriginalNamespace()->getIdentifier();
789 return II && II->isStr("std");
790}
791
792// isStdNamespace - Return whether a given decl context is a toplevel 'std'
793// namespace.
794static bool isStdNamespace(const DeclContext *DC) {
795 if (!DC->isNamespace())
796 return false;
797
798 return isStd(cast<NamespaceDecl>(DC));
799}
800
801static const GlobalDecl
802isTemplate(GlobalDecl GD, const TemplateArgumentList *&TemplateArgs) {
803 const NamedDecl *ND = cast<NamedDecl>(GD.getDecl());
804 // Check if we have a function template.
805 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
806 if (const TemplateDecl *TD = FD->getPrimaryTemplate()) {
807 TemplateArgs = FD->getTemplateSpecializationArgs();
808 return GD.getWithDecl(TD);
809 }
810 }
811
812 // Check if we have a class template.
813 if (const ClassTemplateSpecializationDecl *Spec =
814 dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
815 TemplateArgs = &Spec->getTemplateArgs();
816 return GD.getWithDecl(Spec->getSpecializedTemplate());
817 }
818
819 // Check if we have a variable template.
820 if (const VarTemplateSpecializationDecl *Spec =
821 dyn_cast<VarTemplateSpecializationDecl>(ND)) {
822 TemplateArgs = &Spec->getTemplateArgs();
823 return GD.getWithDecl(Spec->getSpecializedTemplate());
824 }
825
826 return GlobalDecl();
827}
828
829void CXXNameMangler::mangleName(GlobalDecl GD) {
830 const NamedDecl *ND = cast<NamedDecl>(GD.getDecl());
831 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
832 // Variables should have implicit tags from its type.
833 AbiTagList VariableTypeAbiTags = makeVariableTypeTags(VD);
834 if (VariableTypeAbiTags.empty()) {
835 // Simple case no variable type tags.
836 mangleNameWithAbiTags(VD, nullptr);
837 return;
838 }
839
840 // Mangle variable name to null stream to collect tags.
841 llvm::raw_null_ostream NullOutStream;
842 CXXNameMangler VariableNameMangler(*this, NullOutStream);
843 VariableNameMangler.disableDerivedAbiTags();
844 VariableNameMangler.mangleNameWithAbiTags(VD, nullptr);
845
846 // Get tags from variable type that are not present in its name.
847 const AbiTagList &UsedAbiTags =
848 VariableNameMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags();
849 AbiTagList AdditionalAbiTags(VariableTypeAbiTags.size());
850 AdditionalAbiTags.erase(
851 std::set_difference(VariableTypeAbiTags.begin(),
852 VariableTypeAbiTags.end(), UsedAbiTags.begin(),
853 UsedAbiTags.end(), AdditionalAbiTags.begin()),
854 AdditionalAbiTags.end());
855
856 // Output name with implicit tags.
857 mangleNameWithAbiTags(VD, &AdditionalAbiTags);
858 } else {
859 mangleNameWithAbiTags(GD, nullptr);
860 }
861}
862
863void CXXNameMangler::mangleNameWithAbiTags(GlobalDecl GD,
864 const AbiTagList *AdditionalAbiTags) {
865 const NamedDecl *ND = cast<NamedDecl>(GD.getDecl());
866 // <name> ::= [<module-name>] <nested-name>
867 // ::= [<module-name>] <unscoped-name>
868 // ::= [<module-name>] <unscoped-template-name> <template-args>
869 // ::= <local-name>
870 //
871 const DeclContext *DC = getEffectiveDeclContext(ND);
872
873 // If this is an extern variable declared locally, the relevant DeclContext
874 // is that of the containing namespace, or the translation unit.
875 // FIXME: This is a hack; extern variables declared locally should have
876 // a proper semantic declaration context!
877 if (isLocalContainerContext(DC) && ND->hasLinkage() && !isLambda(ND))
878 while (!DC->isNamespace() && !DC->isTranslationUnit())
879 DC = getEffectiveParentContext(DC);
880 else if (GetLocalClassDecl(ND)) {
881 mangleLocalName(GD, AdditionalAbiTags);
882 return;
883 }
884
885 DC = IgnoreLinkageSpecDecls(DC);
886
887 if (isLocalContainerContext(DC)) {
888 mangleLocalName(GD, AdditionalAbiTags);
889 return;
890 }
891
892 // Do not mangle the owning module for an external linkage declaration.
893 // This enables backwards-compatibility with non-modular code, and is
894 // a valid choice since conflicts are not permitted by C++ Modules TS
895 // [basic.def.odr]/6.2.
896 if (!ND->hasExternalFormalLinkage())
897 if (Module *M = ND->getOwningModuleForLinkage())
898 mangleModuleName(M);
899
900 if (DC->isTranslationUnit() || isStdNamespace(DC)) {
901 // Check if we have a template.
902 const TemplateArgumentList *TemplateArgs = nullptr;
903 if (GlobalDecl TD = isTemplate(GD, TemplateArgs)) {
904 mangleUnscopedTemplateName(TD, AdditionalAbiTags);
905 mangleTemplateArgs(*TemplateArgs);
906 return;
907 }
908
909 mangleUnscopedName(GD, AdditionalAbiTags);
910 return;
911 }
912
913 mangleNestedName(GD, DC, AdditionalAbiTags);
914}
915
916void CXXNameMangler::mangleModuleName(const Module *M) {
917 // Implement the C++ Modules TS name mangling proposal; see
918 // https://gcc.gnu.org/wiki/cxx-modules?action=AttachFile
919 //
920 // <module-name> ::= W <unscoped-name>+ E
921 // ::= W <module-subst> <unscoped-name>* E
922 Out << 'W';
923 mangleModuleNamePrefix(M->Name);
924 Out << 'E';
925}
926
927void CXXNameMangler::mangleModuleNamePrefix(StringRef Name) {
928 // <module-subst> ::= _ <seq-id> # 0 < seq-id < 10
929 // ::= W <seq-id - 10> _ # otherwise
930 auto It = ModuleSubstitutions.find(Name);
931 if (It != ModuleSubstitutions.end()) {
932 if (It->second < 10)
933 Out << '_' << static_cast<char>('0' + It->second);
934 else
935 Out << 'W' << (It->second - 10) << '_';
936 return;
937 }
938
939 // FIXME: Preserve hierarchy in module names rather than flattening
940 // them to strings; use Module*s as substitution keys.
941 auto Parts = Name.rsplit('.');
942 if (Parts.second.empty())
943 Parts.second = Parts.first;
944 else
945 mangleModuleNamePrefix(Parts.first);
946
947 Out << Parts.second.size() << Parts.second;
948 ModuleSubstitutions.insert({Name, ModuleSubstitutions.size()});
949}
950
951void CXXNameMangler::mangleTemplateName(const TemplateDecl *TD,
952 const TemplateArgument *TemplateArgs,
953 unsigned NumTemplateArgs) {
954 const DeclContext *DC = IgnoreLinkageSpecDecls(getEffectiveDeclContext(TD));
955
956 if (DC->isTranslationUnit() || isStdNamespace(DC)) {
957 mangleUnscopedTemplateName(TD, nullptr);
958 mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
959 } else {
960 mangleNestedName(TD, TemplateArgs, NumTemplateArgs);
961 }
962}
963
964void CXXNameMangler::mangleUnscopedName(GlobalDecl GD,
965 const AbiTagList *AdditionalAbiTags) {
966 const NamedDecl *ND = cast<NamedDecl>(GD.getDecl());
967 // <unscoped-name> ::= <unqualified-name>
968 // ::= St <unqualified-name> # ::std::
969
970 if (isStdNamespace(IgnoreLinkageSpecDecls(getEffectiveDeclContext(ND))))
971 Out << "St";
972
973 mangleUnqualifiedName(GD, AdditionalAbiTags);
974}
975
976void CXXNameMangler::mangleUnscopedTemplateName(
977 GlobalDecl GD, const AbiTagList *AdditionalAbiTags) {
978 const TemplateDecl *ND = cast<TemplateDecl>(GD.getDecl());
979 // <unscoped-template-name> ::= <unscoped-name>
980 // ::= <substitution>
981 if (mangleSubstitution(ND))
982 return;
983
984 // <template-template-param> ::= <template-param>
985 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) {
986 assert(!AdditionalAbiTags &&((!AdditionalAbiTags && "template template param cannot have abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"template template param cannot have abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 987, __PRETTY_FUNCTION__))
987 "template template param cannot have abi tags")((!AdditionalAbiTags && "template template param cannot have abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"template template param cannot have abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 987, __PRETTY_FUNCTION__))
;
988 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
989 } else if (isa<BuiltinTemplateDecl>(ND) || isa<ConceptDecl>(ND)) {
990 mangleUnscopedName(GD, AdditionalAbiTags);
991 } else {
992 mangleUnscopedName(GD.getWithDecl(ND->getTemplatedDecl()), AdditionalAbiTags);
993 }
994
995 addSubstitution(ND);
996}
997
998void CXXNameMangler::mangleUnscopedTemplateName(
999 TemplateName Template, const AbiTagList *AdditionalAbiTags) {
1000 // <unscoped-template-name> ::= <unscoped-name>
1001 // ::= <substitution>
1002 if (TemplateDecl *TD = Template.getAsTemplateDecl())
1003 return mangleUnscopedTemplateName(TD, AdditionalAbiTags);
1004
1005 if (mangleSubstitution(Template))
1006 return;
1007
1008 assert(!AdditionalAbiTags &&((!AdditionalAbiTags && "dependent template name cannot have abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"dependent template name cannot have abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1009, __PRETTY_FUNCTION__))
1009 "dependent template name cannot have abi tags")((!AdditionalAbiTags && "dependent template name cannot have abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"dependent template name cannot have abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1009, __PRETTY_FUNCTION__))
;
1010
1011 DependentTemplateName *Dependent = Template.getAsDependentTemplateName();
1012 assert(Dependent && "Not a dependent template name?")((Dependent && "Not a dependent template name?") ? static_cast
<void> (0) : __assert_fail ("Dependent && \"Not a dependent template name?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1012, __PRETTY_FUNCTION__))
;
1013 if (const IdentifierInfo *Id = Dependent->getIdentifier())
1014 mangleSourceName(Id);
1015 else
1016 mangleOperatorName(Dependent->getOperator(), UnknownArity);
1017
1018 addSubstitution(Template);
1019}
1020
1021void CXXNameMangler::mangleFloat(const llvm::APFloat &f) {
1022 // ABI:
1023 // Floating-point literals are encoded using a fixed-length
1024 // lowercase hexadecimal string corresponding to the internal
1025 // representation (IEEE on Itanium), high-order bytes first,
1026 // without leading zeroes. For example: "Lf bf800000 E" is -1.0f
1027 // on Itanium.
1028 // The 'without leading zeroes' thing seems to be an editorial
1029 // mistake; see the discussion on cxx-abi-dev beginning on
1030 // 2012-01-16.
1031
1032 // Our requirements here are just barely weird enough to justify
1033 // using a custom algorithm instead of post-processing APInt::toString().
1034
1035 llvm::APInt valueBits = f.bitcastToAPInt();
1036 unsigned numCharacters = (valueBits.getBitWidth() + 3) / 4;
1037 assert(numCharacters != 0)((numCharacters != 0) ? static_cast<void> (0) : __assert_fail
("numCharacters != 0", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1037, __PRETTY_FUNCTION__))
;
1038
1039 // Allocate a buffer of the right number of characters.
1040 SmallVector<char, 20> buffer(numCharacters);
1041
1042 // Fill the buffer left-to-right.
1043 for (unsigned stringIndex = 0; stringIndex != numCharacters; ++stringIndex) {
1044 // The bit-index of the next hex digit.
1045 unsigned digitBitIndex = 4 * (numCharacters - stringIndex - 1);
1046
1047 // Project out 4 bits starting at 'digitIndex'.
1048 uint64_t hexDigit = valueBits.getRawData()[digitBitIndex / 64];
1049 hexDigit >>= (digitBitIndex % 64);
1050 hexDigit &= 0xF;
1051
1052 // Map that over to a lowercase hex digit.
1053 static const char charForHex[16] = {
1054 '0', '1', '2', '3', '4', '5', '6', '7',
1055 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
1056 };
1057 buffer[stringIndex] = charForHex[hexDigit];
1058 }
1059
1060 Out.write(buffer.data(), numCharacters);
1061}
1062
1063void CXXNameMangler::mangleNumber(const llvm::APSInt &Value) {
1064 if (Value.isSigned() && Value.isNegative()) {
1065 Out << 'n';
1066 Value.abs().print(Out, /*signed*/ false);
1067 } else {
1068 Value.print(Out, /*signed*/ false);
1069 }
1070}
1071
1072void CXXNameMangler::mangleNumber(int64_t Number) {
1073 // <number> ::= [n] <non-negative decimal integer>
1074 if (Number < 0) {
1075 Out << 'n';
1076 Number = -Number;
1077 }
1078
1079 Out << Number;
1080}
1081
1082void CXXNameMangler::mangleCallOffset(int64_t NonVirtual, int64_t Virtual) {
1083 // <call-offset> ::= h <nv-offset> _
1084 // ::= v <v-offset> _
1085 // <nv-offset> ::= <offset number> # non-virtual base override
1086 // <v-offset> ::= <offset number> _ <virtual offset number>
1087 // # virtual base override, with vcall offset
1088 if (!Virtual) {
1089 Out << 'h';
1090 mangleNumber(NonVirtual);
1091 Out << '_';
1092 return;
1093 }
1094
1095 Out << 'v';
1096 mangleNumber(NonVirtual);
1097 Out << '_';
1098 mangleNumber(Virtual);
1099 Out << '_';
1100}
1101
1102void CXXNameMangler::manglePrefix(QualType type) {
1103 if (const auto *TST = type->getAs<TemplateSpecializationType>()) {
1104 if (!mangleSubstitution(QualType(TST, 0))) {
1105 mangleTemplatePrefix(TST->getTemplateName());
1106
1107 // FIXME: GCC does not appear to mangle the template arguments when
1108 // the template in question is a dependent template name. Should we
1109 // emulate that badness?
1110 mangleTemplateArgs(TST->getArgs(), TST->getNumArgs());
1111 addSubstitution(QualType(TST, 0));
1112 }
1113 } else if (const auto *DTST =
1114 type->getAs<DependentTemplateSpecializationType>()) {
1115 if (!mangleSubstitution(QualType(DTST, 0))) {
1116 TemplateName Template = getASTContext().getDependentTemplateName(
1117 DTST->getQualifier(), DTST->getIdentifier());
1118 mangleTemplatePrefix(Template);
1119
1120 // FIXME: GCC does not appear to mangle the template arguments when
1121 // the template in question is a dependent template name. Should we
1122 // emulate that badness?
1123 mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs());
1124 addSubstitution(QualType(DTST, 0));
1125 }
1126 } else {
1127 // We use the QualType mangle type variant here because it handles
1128 // substitutions.
1129 mangleType(type);
1130 }
1131}
1132
1133/// Mangle everything prior to the base-unresolved-name in an unresolved-name.
1134///
1135/// \param recursive - true if this is being called recursively,
1136/// i.e. if there is more prefix "to the right".
1137void CXXNameMangler::mangleUnresolvedPrefix(NestedNameSpecifier *qualifier,
1138 bool recursive) {
1139
1140 // x, ::x
1141 // <unresolved-name> ::= [gs] <base-unresolved-name>
1142
1143 // T::x / decltype(p)::x
1144 // <unresolved-name> ::= sr <unresolved-type> <base-unresolved-name>
1145
1146 // T::N::x /decltype(p)::N::x
1147 // <unresolved-name> ::= srN <unresolved-type> <unresolved-qualifier-level>+ E
1148 // <base-unresolved-name>
1149
1150 // A::x, N::y, A<T>::z; "gs" means leading "::"
1151 // <unresolved-name> ::= [gs] sr <unresolved-qualifier-level>+ E
1152 // <base-unresolved-name>
1153
1154 switch (qualifier->getKind()) {
1155 case NestedNameSpecifier::Global:
1156 Out << "gs";
1157
1158 // We want an 'sr' unless this is the entire NNS.
1159 if (recursive)
1160 Out << "sr";
1161
1162 // We never want an 'E' here.
1163 return;
1164
1165 case NestedNameSpecifier::Super:
1166 llvm_unreachable("Can't mangle __super specifier")::llvm::llvm_unreachable_internal("Can't mangle __super specifier"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1166)
;
1167
1168 case NestedNameSpecifier::Namespace:
1169 if (qualifier->getPrefix())
1170 mangleUnresolvedPrefix(qualifier->getPrefix(),
1171 /*recursive*/ true);
1172 else
1173 Out << "sr";
1174 mangleSourceNameWithAbiTags(qualifier->getAsNamespace());
1175 break;
1176 case NestedNameSpecifier::NamespaceAlias:
1177 if (qualifier->getPrefix())
1178 mangleUnresolvedPrefix(qualifier->getPrefix(),
1179 /*recursive*/ true);
1180 else
1181 Out << "sr";
1182 mangleSourceNameWithAbiTags(qualifier->getAsNamespaceAlias());
1183 break;
1184
1185 case NestedNameSpecifier::TypeSpec:
1186 case NestedNameSpecifier::TypeSpecWithTemplate: {
1187 const Type *type = qualifier->getAsType();
1188
1189 // We only want to use an unresolved-type encoding if this is one of:
1190 // - a decltype
1191 // - a template type parameter
1192 // - a template template parameter with arguments
1193 // In all of these cases, we should have no prefix.
1194 if (qualifier->getPrefix()) {
1195 mangleUnresolvedPrefix(qualifier->getPrefix(),
1196 /*recursive*/ true);
1197 } else {
1198 // Otherwise, all the cases want this.
1199 Out << "sr";
1200 }
1201
1202 if (mangleUnresolvedTypeOrSimpleId(QualType(type, 0), recursive ? "N" : ""))
1203 return;
1204
1205 break;
1206 }
1207
1208 case NestedNameSpecifier::Identifier:
1209 // Member expressions can have these without prefixes.
1210 if (qualifier->getPrefix())
1211 mangleUnresolvedPrefix(qualifier->getPrefix(),
1212 /*recursive*/ true);
1213 else
1214 Out << "sr";
1215
1216 mangleSourceName(qualifier->getAsIdentifier());
1217 // An Identifier has no type information, so we can't emit abi tags for it.
1218 break;
1219 }
1220
1221 // If this was the innermost part of the NNS, and we fell out to
1222 // here, append an 'E'.
1223 if (!recursive)
1224 Out << 'E';
1225}
1226
1227/// Mangle an unresolved-name, which is generally used for names which
1228/// weren't resolved to specific entities.
1229void CXXNameMangler::mangleUnresolvedName(
1230 NestedNameSpecifier *qualifier, DeclarationName name,
1231 const TemplateArgumentLoc *TemplateArgs, unsigned NumTemplateArgs,
1232 unsigned knownArity) {
1233 if (qualifier) mangleUnresolvedPrefix(qualifier);
1234 switch (name.getNameKind()) {
1235 // <base-unresolved-name> ::= <simple-id>
1236 case DeclarationName::Identifier:
1237 mangleSourceName(name.getAsIdentifierInfo());
1238 break;
1239 // <base-unresolved-name> ::= dn <destructor-name>
1240 case DeclarationName::CXXDestructorName:
1241 Out << "dn";
1242 mangleUnresolvedTypeOrSimpleId(name.getCXXNameType());
1243 break;
1244 // <base-unresolved-name> ::= on <operator-name>
1245 case DeclarationName::CXXConversionFunctionName:
1246 case DeclarationName::CXXLiteralOperatorName:
1247 case DeclarationName::CXXOperatorName:
1248 Out << "on";
1249 mangleOperatorName(name, knownArity);
1250 break;
1251 case DeclarationName::CXXConstructorName:
1252 llvm_unreachable("Can't mangle a constructor name!")::llvm::llvm_unreachable_internal("Can't mangle a constructor name!"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1252)
;
1253 case DeclarationName::CXXUsingDirective:
1254 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1254)
;
1255 case DeclarationName::CXXDeductionGuideName:
1256 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1256)
;
1257 case DeclarationName::ObjCMultiArgSelector:
1258 case DeclarationName::ObjCOneArgSelector:
1259 case DeclarationName::ObjCZeroArgSelector:
1260 llvm_unreachable("Can't mangle Objective-C selector names here!")::llvm::llvm_unreachable_internal("Can't mangle Objective-C selector names here!"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1260)
;
1261 }
1262
1263 // The <simple-id> and on <operator-name> productions end in an optional
1264 // <template-args>.
1265 if (TemplateArgs)
1266 mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
1267}
1268
1269void CXXNameMangler::mangleUnqualifiedName(GlobalDecl GD,
1270 DeclarationName Name,
1271 unsigned KnownArity,
1272 const AbiTagList *AdditionalAbiTags) {
1273 const NamedDecl *ND = cast_or_null<NamedDecl>(GD.getDecl());
1
Assuming null pointer is passed into cast
2
'ND' initialized to a null pointer value
1274 unsigned Arity = KnownArity;
1275 // <unqualified-name> ::= <operator-name>
1276 // ::= <ctor-dtor-name>
1277 // ::= <source-name>
1278 switch (Name.getNameKind()) {
3
Calling 'DeclarationName::getNameKind'
7
Returning from 'DeclarationName::getNameKind'
8
Control jumps to 'case CXXDestructorName:' at line 1484
1279 case DeclarationName::Identifier: {
1280 const IdentifierInfo *II = Name.getAsIdentifierInfo();
1281
1282 // We mangle decomposition declarations as the names of their bindings.
1283 if (auto *DD = dyn_cast<DecompositionDecl>(ND)) {
1284 // FIXME: Non-standard mangling for decomposition declarations:
1285 //
1286 // <unqualified-name> ::= DC <source-name>* E
1287 //
1288 // These can never be referenced across translation units, so we do
1289 // not need a cross-vendor mangling for anything other than demanglers.
1290 // Proposed on cxx-abi-dev on 2016-08-12
1291 Out << "DC";
1292 for (auto *BD : DD->bindings())
1293 mangleSourceName(BD->getDeclName().getAsIdentifierInfo());
1294 Out << 'E';
1295 writeAbiTags(ND, AdditionalAbiTags);
1296 break;
1297 }
1298
1299 if (auto *GD = dyn_cast<MSGuidDecl>(ND)) {
1300 // We follow MSVC in mangling GUID declarations as if they were variables
1301 // with a particular reserved name. Continue the pretense here.
1302 SmallString<sizeof("_GUID_12345678_1234_1234_1234_1234567890ab")> GUID;
1303 llvm::raw_svector_ostream GUIDOS(GUID);
1304 Context.mangleMSGuidDecl(GD, GUIDOS);
1305 Out << GUID.size() << GUID;
1306 break;
1307 }
1308
1309 if (II) {
1310 // Match GCC's naming convention for internal linkage symbols, for
1311 // symbols that are not actually visible outside of this TU. GCC
1312 // distinguishes between internal and external linkage symbols in
1313 // its mangling, to support cases like this that were valid C++ prior
1314 // to DR426:
1315 //
1316 // void test() { extern void foo(); }
1317 // static void foo();
1318 //
1319 // Don't bother with the L marker for names in anonymous namespaces; the
1320 // 12_GLOBAL__N_1 mangling is quite sufficient there, and this better
1321 // matches GCC anyway, because GCC does not treat anonymous namespaces as
1322 // implying internal linkage.
1323 if (ND && ND->getFormalLinkage() == InternalLinkage &&
1324 !ND->isExternallyVisible() &&
1325 getEffectiveDeclContext(ND)->isFileContext() &&
1326 !ND->isInAnonymousNamespace())
1327 Out << 'L';
1328
1329 auto *FD = dyn_cast<FunctionDecl>(ND);
1330 bool IsRegCall = FD &&
1331 FD->getType()->castAs<FunctionType>()->getCallConv() ==
1332 clang::CC_X86RegCall;
1333 bool IsDeviceStub =
1334 FD && FD->hasAttr<CUDAGlobalAttr>() &&
1335 GD.getKernelReferenceKind() == KernelReferenceKind::Stub;
1336 if (IsDeviceStub)
1337 mangleDeviceStubName(II);
1338 else if (IsRegCall)
1339 mangleRegCallName(II);
1340 else
1341 mangleSourceName(II);
1342
1343 writeAbiTags(ND, AdditionalAbiTags);
1344 break;
1345 }
1346
1347 // Otherwise, an anonymous entity. We must have a declaration.
1348 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1348, __PRETTY_FUNCTION__))
;
1349
1350 if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
1351 if (NS->isAnonymousNamespace()) {
1352 // This is how gcc mangles these names.
1353 Out << "12_GLOBAL__N_1";
1354 break;
1355 }
1356 }
1357
1358 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
1359 // We must have an anonymous union or struct declaration.
1360 const RecordDecl *RD = VD->getType()->castAs<RecordType>()->getDecl();
1361
1362 // Itanium C++ ABI 5.1.2:
1363 //
1364 // For the purposes of mangling, the name of an anonymous union is
1365 // considered to be the name of the first named data member found by a
1366 // pre-order, depth-first, declaration-order walk of the data members of
1367 // the anonymous union. If there is no such data member (i.e., if all of
1368 // the data members in the union are unnamed), then there is no way for
1369 // a program to refer to the anonymous union, and there is therefore no
1370 // need to mangle its name.
1371 assert(RD->isAnonymousStructOrUnion()((RD->isAnonymousStructOrUnion() && "Expected anonymous struct or union!"
) ? static_cast<void> (0) : __assert_fail ("RD->isAnonymousStructOrUnion() && \"Expected anonymous struct or union!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1372, __PRETTY_FUNCTION__))
1372 && "Expected anonymous struct or union!")((RD->isAnonymousStructOrUnion() && "Expected anonymous struct or union!"
) ? static_cast<void> (0) : __assert_fail ("RD->isAnonymousStructOrUnion() && \"Expected anonymous struct or union!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1372, __PRETTY_FUNCTION__))
;
1373 const FieldDecl *FD = RD->findFirstNamedDataMember();
1374
1375 // It's actually possible for various reasons for us to get here
1376 // with an empty anonymous struct / union. Fortunately, it
1377 // doesn't really matter what name we generate.
1378 if (!FD) break;
1379 assert(FD->getIdentifier() && "Data member name isn't an identifier!")((FD->getIdentifier() && "Data member name isn't an identifier!"
) ? static_cast<void> (0) : __assert_fail ("FD->getIdentifier() && \"Data member name isn't an identifier!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1379, __PRETTY_FUNCTION__))
;
1380
1381 mangleSourceName(FD->getIdentifier());
1382 // Not emitting abi tags: internal name anyway.
1383 break;
1384 }
1385
1386 // Class extensions have no name as a category, and it's possible
1387 // for them to be the semantic parent of certain declarations
1388 // (primarily, tag decls defined within declarations). Such
1389 // declarations will always have internal linkage, so the name
1390 // doesn't really matter, but we shouldn't crash on them. For
1391 // safety, just handle all ObjC containers here.
1392 if (isa<ObjCContainerDecl>(ND))
1393 break;
1394
1395 // We must have an anonymous struct.
1396 const TagDecl *TD = cast<TagDecl>(ND);
1397 if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) {
1398 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1399, __PRETTY_FUNCTION__))
1399 "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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1399, __PRETTY_FUNCTION__))
;
1400 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1401, __PRETTY_FUNCTION__))
1401 "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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1401, __PRETTY_FUNCTION__))
;
1402 mangleSourceName(D->getDeclName().getAsIdentifierInfo());
1403 assert(!AdditionalAbiTags && "Type cannot have additional abi tags")((!AdditionalAbiTags && "Type cannot have additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"Type cannot have additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1403, __PRETTY_FUNCTION__))
;
1404 // Explicit abi tags are still possible; take from underlying type, not
1405 // from typedef.
1406 writeAbiTags(TD, nullptr);
1407 break;
1408 }
1409
1410 // <unnamed-type-name> ::= <closure-type-name>
1411 //
1412 // <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _
1413 // <lambda-sig> ::= <template-param-decl>* <parameter-type>+
1414 // # Parameter types or 'v' for 'void'.
1415 if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) {
1416 if (Record->isLambda() && (Record->getLambdaManglingNumber() ||
1417 Context.isUniqueNameMangler())) {
1418 assert(!AdditionalAbiTags &&((!AdditionalAbiTags && "Lambda type cannot have additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"Lambda type cannot have additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1419, __PRETTY_FUNCTION__))
1419 "Lambda type cannot have additional abi tags")((!AdditionalAbiTags && "Lambda type cannot have additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"Lambda type cannot have additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1419, __PRETTY_FUNCTION__))
;
1420 mangleLambda(Record);
1421 break;
1422 }
1423 }
1424
1425 if (TD->isExternallyVisible()) {
1426 unsigned UnnamedMangle = getASTContext().getManglingNumber(TD);
1427 Out << "Ut";
1428 if (UnnamedMangle > 1)
1429 Out << UnnamedMangle - 2;
1430 Out << '_';
1431 writeAbiTags(TD, AdditionalAbiTags);
1432 break;
1433 }
1434
1435 // Get a unique id for the anonymous struct. If it is not a real output
1436 // ID doesn't matter so use fake one.
1437 unsigned AnonStructId = NullOut ? 0 : Context.getAnonymousStructId(TD);
1438
1439 // Mangle it as a source name in the form
1440 // [n] $_<id>
1441 // where n is the length of the string.
1442 SmallString<8> Str;
1443 Str += "$_";
1444 Str += llvm::utostr(AnonStructId);
1445
1446 Out << Str.size();
1447 Out << Str;
1448 break;
1449 }
1450
1451 case DeclarationName::ObjCZeroArgSelector:
1452 case DeclarationName::ObjCOneArgSelector:
1453 case DeclarationName::ObjCMultiArgSelector:
1454 llvm_unreachable("Can't mangle Objective-C selector names here!")::llvm::llvm_unreachable_internal("Can't mangle Objective-C selector names here!"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1454)
;
1455
1456 case DeclarationName::CXXConstructorName: {
1457 const CXXRecordDecl *InheritedFrom = nullptr;
1458 const TemplateArgumentList *InheritedTemplateArgs = nullptr;
1459 if (auto Inherited =
1460 cast<CXXConstructorDecl>(ND)->getInheritedConstructor()) {
1461 InheritedFrom = Inherited.getConstructor()->getParent();
1462 InheritedTemplateArgs =
1463 Inherited.getConstructor()->getTemplateSpecializationArgs();
1464 }
1465
1466 if (ND == Structor)
1467 // If the named decl is the C++ constructor we're mangling, use the type
1468 // we were given.
1469 mangleCXXCtorType(static_cast<CXXCtorType>(StructorType), InheritedFrom);
1470 else
1471 // Otherwise, use the complete constructor name. This is relevant if a
1472 // class with a constructor is declared within a constructor.
1473 mangleCXXCtorType(Ctor_Complete, InheritedFrom);
1474
1475 // FIXME: The template arguments are part of the enclosing prefix or
1476 // nested-name, but it's more convenient to mangle them here.
1477 if (InheritedTemplateArgs)
1478 mangleTemplateArgs(*InheritedTemplateArgs);
1479
1480 writeAbiTags(ND, AdditionalAbiTags);
1481 break;
1482 }
1483
1484 case DeclarationName::CXXDestructorName:
1485 if (ND == Structor)
9
Assuming 'ND' is not equal to field 'Structor'
10
Taking false branch
1486 // If the named decl is the C++ destructor we're mangling, use the type we
1487 // were given.
1488 mangleCXXDtorType(static_cast<CXXDtorType>(StructorType));
1489 else
1490 // Otherwise, use the complete destructor name. This is relevant if a
1491 // class with a destructor is declared within a destructor.
1492 mangleCXXDtorType(Dtor_Complete);
1493 writeAbiTags(ND, AdditionalAbiTags);
11
Passing null pointer value via 1st parameter 'ND'
12
Calling 'CXXNameMangler::writeAbiTags'
1494 break;
1495
1496 case DeclarationName::CXXOperatorName:
1497 if (ND && Arity == UnknownArity) {
1498 Arity = cast<FunctionDecl>(ND)->getNumParams();
1499
1500 // If we have a member function, we need to include the 'this' pointer.
1501 if (const auto *MD = dyn_cast<CXXMethodDecl>(ND))
1502 if (!MD->isStatic())
1503 Arity++;
1504 }
1505 LLVM_FALLTHROUGH[[gnu::fallthrough]];
1506 case DeclarationName::CXXConversionFunctionName:
1507 case DeclarationName::CXXLiteralOperatorName:
1508 mangleOperatorName(Name, Arity);
1509 writeAbiTags(ND, AdditionalAbiTags);
1510 break;
1511
1512 case DeclarationName::CXXDeductionGuideName:
1513 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1513)
;
1514
1515 case DeclarationName::CXXUsingDirective:
1516 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1516)
;
1517 }
1518}
1519
1520void CXXNameMangler::mangleRegCallName(const IdentifierInfo *II) {
1521 // <source-name> ::= <positive length number> __regcall3__ <identifier>
1522 // <number> ::= [n] <non-negative decimal integer>
1523 // <identifier> ::= <unqualified source code identifier>
1524 Out << II->getLength() + sizeof("__regcall3__") - 1 << "__regcall3__"
1525 << II->getName();
1526}
1527
1528void CXXNameMangler::mangleDeviceStubName(const IdentifierInfo *II) {
1529 // <source-name> ::= <positive length number> __device_stub__ <identifier>
1530 // <number> ::= [n] <non-negative decimal integer>
1531 // <identifier> ::= <unqualified source code identifier>
1532 Out << II->getLength() + sizeof("__device_stub__") - 1 << "__device_stub__"
1533 << II->getName();
1534}
1535
1536void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) {
1537 // <source-name> ::= <positive length number> <identifier>
1538 // <number> ::= [n] <non-negative decimal integer>
1539 // <identifier> ::= <unqualified source code identifier>
1540 Out << II->getLength() << II->getName();
1541}
1542
1543void CXXNameMangler::mangleNestedName(GlobalDecl GD,
1544 const DeclContext *DC,
1545 const AbiTagList *AdditionalAbiTags,
1546 bool NoFunction) {
1547 const NamedDecl *ND = cast<NamedDecl>(GD.getDecl());
1548 // <nested-name>
1549 // ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E
1550 // ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix>
1551 // <template-args> E
1552
1553 Out << 'N';
1554 if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND)) {
1555 Qualifiers MethodQuals = Method->getMethodQualifiers();
1556 // We do not consider restrict a distinguishing attribute for overloading
1557 // purposes so we must not mangle it.
1558 MethodQuals.removeRestrict();
1559 mangleQualifiers(MethodQuals);
1560 mangleRefQualifier(Method->getRefQualifier());
1561 }
1562
1563 // Check if we have a template.
1564 const TemplateArgumentList *TemplateArgs = nullptr;
1565 if (GlobalDecl TD = isTemplate(GD, TemplateArgs)) {
1566 mangleTemplatePrefix(TD, NoFunction);
1567 mangleTemplateArgs(*TemplateArgs);
1568 }
1569 else {
1570 manglePrefix(DC, NoFunction);
1571 mangleUnqualifiedName(GD, AdditionalAbiTags);
1572 }
1573
1574 Out << 'E';
1575}
1576void CXXNameMangler::mangleNestedName(const TemplateDecl *TD,
1577 const TemplateArgument *TemplateArgs,
1578 unsigned NumTemplateArgs) {
1579 // <nested-name> ::= N [<CV-qualifiers>] <template-prefix> <template-args> E
1580
1581 Out << 'N';
1582
1583 mangleTemplatePrefix(TD);
1584 mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
1585
1586 Out << 'E';
1587}
1588
1589static GlobalDecl getParentOfLocalEntity(const DeclContext *DC) {
1590 GlobalDecl GD;
1591 // The Itanium spec says:
1592 // For entities in constructors and destructors, the mangling of the
1593 // complete object constructor or destructor is used as the base function
1594 // name, i.e. the C1 or D1 version.
1595 if (auto *CD = dyn_cast<CXXConstructorDecl>(DC))
1596 GD = GlobalDecl(CD, Ctor_Complete);
1597 else if (auto *DD = dyn_cast<CXXDestructorDecl>(DC))
1598 GD = GlobalDecl(DD, Dtor_Complete);
1599 else
1600 GD = GlobalDecl(cast<FunctionDecl>(DC));
1601 return GD;
1602}
1603
1604void CXXNameMangler::mangleLocalName(GlobalDecl GD,
1605 const AbiTagList *AdditionalAbiTags) {
1606 const Decl *D = GD.getDecl();
1607 // <local-name> := Z <function encoding> E <entity name> [<discriminator>]
1608 // := Z <function encoding> E s [<discriminator>]
1609 // <local-name> := Z <function encoding> E d [ <parameter number> ]
1610 // _ <entity name>
1611 // <discriminator> := _ <non-negative number>
1612 assert(isa<NamedDecl>(D) || isa<BlockDecl>(D))((isa<NamedDecl>(D) || isa<BlockDecl>(D)) ? static_cast
<void> (0) : __assert_fail ("isa<NamedDecl>(D) || isa<BlockDecl>(D)"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1612, __PRETTY_FUNCTION__))
;
1613 const RecordDecl *RD = GetLocalClassDecl(D);
1614 const DeclContext *DC = getEffectiveDeclContext(RD ? RD : D);
1615
1616 Out << 'Z';
1617
1618 {
1619 AbiTagState LocalAbiTags(AbiTags);
1620
1621 if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(DC))
1622 mangleObjCMethodName(MD);
1623 else if (const BlockDecl *BD = dyn_cast<BlockDecl>(DC))
1624 mangleBlockForPrefix(BD);
1625 else
1626 mangleFunctionEncoding(getParentOfLocalEntity(DC));
1627
1628 // Implicit ABI tags (from namespace) are not available in the following
1629 // entity; reset to actually emitted tags, which are available.
1630 LocalAbiTags.setUsedAbiTags(LocalAbiTags.getEmittedAbiTags());
1631 }
1632
1633 Out << 'E';
1634
1635 // GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to
1636 // be a bug that is fixed in trunk.
1637
1638 if (RD) {
1639 // The parameter number is omitted for the last parameter, 0 for the
1640 // second-to-last parameter, 1 for the third-to-last parameter, etc. The
1641 // <entity name> will of course contain a <closure-type-name>: Its
1642 // numbering will be local to the particular argument in which it appears
1643 // -- other default arguments do not affect its encoding.
1644 const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD);
1645 if (CXXRD && CXXRD->isLambda()) {
1646 if (const ParmVarDecl *Parm
1647 = dyn_cast_or_null<ParmVarDecl>(CXXRD->getLambdaContextDecl())) {
1648 if (const FunctionDecl *Func
1649 = dyn_cast<FunctionDecl>(Parm->getDeclContext())) {
1650 Out << 'd';
1651 unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex();
1652 if (Num > 1)
1653 mangleNumber(Num - 2);
1654 Out << '_';
1655 }
1656 }
1657 }
1658
1659 // Mangle the name relative to the closest enclosing function.
1660 // equality ok because RD derived from ND above
1661 if (D == RD) {
1662 mangleUnqualifiedName(RD, AdditionalAbiTags);
1663 } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
1664 manglePrefix(getEffectiveDeclContext(BD), true /*NoFunction*/);
1665 assert(!AdditionalAbiTags && "Block cannot have additional abi tags")((!AdditionalAbiTags && "Block cannot have additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"Block cannot have additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1665, __PRETTY_FUNCTION__))
;
1666 mangleUnqualifiedBlock(BD);
1667 } else {
1668 const NamedDecl *ND = cast<NamedDecl>(D);
1669 mangleNestedName(GD, getEffectiveDeclContext(ND), AdditionalAbiTags,
1670 true /*NoFunction*/);
1671 }
1672 } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
1673 // Mangle a block in a default parameter; see above explanation for
1674 // lambdas.
1675 if (const ParmVarDecl *Parm
1676 = dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl())) {
1677 if (const FunctionDecl *Func
1678 = dyn_cast<FunctionDecl>(Parm->getDeclContext())) {
1679 Out << 'd';
1680 unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex();
1681 if (Num > 1)
1682 mangleNumber(Num - 2);
1683 Out << '_';
1684 }
1685 }
1686
1687 assert(!AdditionalAbiTags && "Block cannot have additional abi tags")((!AdditionalAbiTags && "Block cannot have additional abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"Block cannot have additional abi tags\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1687, __PRETTY_FUNCTION__))
;
1688 mangleUnqualifiedBlock(BD);
1689 } else {
1690 mangleUnqualifiedName(GD, AdditionalAbiTags);
1691 }
1692
1693 if (const NamedDecl *ND = dyn_cast<NamedDecl>(RD ? RD : D)) {
1694 unsigned disc;
1695 if (Context.getNextDiscriminator(ND, disc)) {
1696 if (disc < 10)
1697 Out << '_' << disc;
1698 else
1699 Out << "__" << disc << '_';
1700 }
1701 }
1702}
1703
1704void CXXNameMangler::mangleBlockForPrefix(const BlockDecl *Block) {
1705 if (GetLocalClassDecl(Block)) {
1706 mangleLocalName(Block, /* AdditionalAbiTags */ nullptr);
1707 return;
1708 }
1709 const DeclContext *DC = getEffectiveDeclContext(Block);
1710 if (isLocalContainerContext(DC)) {
1711 mangleLocalName(Block, /* AdditionalAbiTags */ nullptr);
1712 return;
1713 }
1714 manglePrefix(getEffectiveDeclContext(Block));
1715 mangleUnqualifiedBlock(Block);
1716}
1717
1718void CXXNameMangler::mangleUnqualifiedBlock(const BlockDecl *Block) {
1719 if (Decl *Context = Block->getBlockManglingContextDecl()) {
1720 if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) &&
1721 Context->getDeclContext()->isRecord()) {
1722 const auto *ND = cast<NamedDecl>(Context);
1723 if (ND->getIdentifier()) {
1724 mangleSourceNameWithAbiTags(ND);
1725 Out << 'M';
1726 }
1727 }
1728 }
1729
1730 // If we have a block mangling number, use it.
1731 unsigned Number = Block->getBlockManglingNumber();
1732 // Otherwise, just make up a number. It doesn't matter what it is because
1733 // the symbol in question isn't externally visible.
1734 if (!Number)
1735 Number = Context.getBlockId(Block, false);
1736 else {
1737 // Stored mangling numbers are 1-based.
1738 --Number;
1739 }
1740 Out << "Ub";
1741 if (Number > 0)
1742 Out << Number - 1;
1743 Out << '_';
1744}
1745
1746// <template-param-decl>
1747// ::= Ty # template type parameter
1748// ::= Tn <type> # template non-type parameter
1749// ::= Tt <template-param-decl>* E # template template parameter
1750// ::= Tp <template-param-decl> # template parameter pack
1751void CXXNameMangler::mangleTemplateParamDecl(const NamedDecl *Decl) {
1752 if (auto *Ty = dyn_cast<TemplateTypeParmDecl>(Decl)) {
1753 if (Ty->isParameterPack())
1754 Out << "Tp";
1755 Out << "Ty";
1756 } else if (auto *Tn = dyn_cast<NonTypeTemplateParmDecl>(Decl)) {
1757 if (Tn->isExpandedParameterPack()) {
1758 for (unsigned I = 0, N = Tn->getNumExpansionTypes(); I != N; ++I) {
1759 Out << "Tn";
1760 mangleType(Tn->getExpansionType(I));
1761 }
1762 } else {
1763 QualType T = Tn->getType();
1764 if (Tn->isParameterPack()) {
1765 Out << "Tp";
1766 if (auto *PackExpansion = T->getAs<PackExpansionType>())
1767 T = PackExpansion->getPattern();
1768 }
1769 Out << "Tn";
1770 mangleType(T);
1771 }
1772 } else if (auto *Tt = dyn_cast<TemplateTemplateParmDecl>(Decl)) {
1773 if (Tt->isExpandedParameterPack()) {
1774 for (unsigned I = 0, N = Tt->getNumExpansionTemplateParameters(); I != N;
1775 ++I) {
1776 Out << "Tt";
1777 for (auto *Param : *Tt->getExpansionTemplateParameters(I))
1778 mangleTemplateParamDecl(Param);
1779 Out << "E";
1780 }
1781 } else {
1782 if (Tt->isParameterPack())
1783 Out << "Tp";
1784 Out << "Tt";
1785 for (auto *Param : *Tt->getTemplateParameters())
1786 mangleTemplateParamDecl(Param);
1787 Out << "E";
1788 }
1789 }
1790}
1791
1792// Handles the __builtin_unique_stable_name feature for lambdas. Instead of the
1793// ordinal of the lambda in its mangling, this does line/column to uniquely and
1794// reliably identify the lambda. Additionally, macro expansions are expressed
1795// as well to prevent macros causing duplicates.
1796static void mangleUniqueNameLambda(CXXNameMangler &Mangler, SourceManager &SM,
1797 raw_ostream &Out,
1798 const CXXRecordDecl *Lambda) {
1799 SourceLocation Loc = Lambda->getLocation();
1800
1801 PresumedLoc PLoc = SM.getPresumedLoc(Loc);
1802 Mangler.mangleNumber(PLoc.getLine());
1803 Out << "_";
1804 Mangler.mangleNumber(PLoc.getColumn());
1805
1806 while(Loc.isMacroID()) {
1807 SourceLocation SLToPrint = Loc;
1808 if (SM.isMacroArgExpansion(Loc))
1809 SLToPrint = SM.getImmediateExpansionRange(Loc).getBegin();
1810
1811 PLoc = SM.getPresumedLoc(SM.getSpellingLoc(SLToPrint));
1812 Out << "m";
1813 Mangler.mangleNumber(PLoc.getLine());
1814 Out << "_";
1815 Mangler.mangleNumber(PLoc.getColumn());
1816
1817 Loc = SM.getImmediateMacroCallerLoc(Loc);
1818 if (Loc.isFileID())
1819 Loc = SM.getImmediateMacroCallerLoc(SLToPrint);
1820 }
1821}
1822
1823void CXXNameMangler::mangleLambda(const CXXRecordDecl *Lambda) {
1824 // If the context of a closure type is an initializer for a class member
1825 // (static or nonstatic), it is encoded in a qualified name with a final
1826 // <prefix> of the form:
1827 //
1828 // <data-member-prefix> := <member source-name> M
1829 //
1830 // Technically, the data-member-prefix is part of the <prefix>. However,
1831 // since a closure type will always be mangled with a prefix, it's easier
1832 // to emit that last part of the prefix here.
1833 if (Decl *Context = Lambda->getLambdaContextDecl()) {
1834 if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) &&
1835 !isa<ParmVarDecl>(Context)) {
1836 // FIXME: 'inline auto [a, b] = []{ return ... };' does not get a
1837 // reasonable mangling here.
1838 if (const IdentifierInfo *Name
1839 = cast<NamedDecl>(Context)->getIdentifier()) {
1840 mangleSourceName(Name);
1841 const TemplateArgumentList *TemplateArgs = nullptr;
1842 if (isTemplate(cast<NamedDecl>(Context), TemplateArgs))
1843 mangleTemplateArgs(*TemplateArgs);
1844 Out << 'M';
1845 }
1846 }
1847 }
1848
1849 Out << "Ul";
1850 mangleLambdaSig(Lambda);
1851 Out << "E";
1852
1853 if (Context.isUniqueNameMangler()) {
1854 mangleUniqueNameLambda(
1855 *this, Context.getASTContext().getSourceManager(), Out, Lambda);
1856 return;
1857 }
1858
1859 // The number is omitted for the first closure type with a given
1860 // <lambda-sig> in a given context; it is n-2 for the nth closure type
1861 // (in lexical order) with that same <lambda-sig> and context.
1862 //
1863 // The AST keeps track of the number for us.
1864 unsigned Number = Lambda->getLambdaManglingNumber();
1865 assert(Number > 0 && "Lambda should be mangled as an unnamed class")((Number > 0 && "Lambda should be mangled as an unnamed class"
) ? static_cast<void> (0) : __assert_fail ("Number > 0 && \"Lambda should be mangled as an unnamed class\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1865, __PRETTY_FUNCTION__))
;
1866 if (Number > 1)
1867 mangleNumber(Number - 2);
1868 Out << '_';
1869}
1870
1871void CXXNameMangler::mangleLambdaSig(const CXXRecordDecl *Lambda) {
1872 for (auto *D : Lambda->getLambdaExplicitTemplateParameters())
1873 mangleTemplateParamDecl(D);
1874 auto *Proto =
1875 Lambda->getLambdaTypeInfo()->getType()->castAs<FunctionProtoType>();
1876 mangleBareFunctionType(Proto, /*MangleReturnType=*/false,
1877 Lambda->getLambdaStaticInvoker());
1878}
1879
1880void CXXNameMangler::manglePrefix(NestedNameSpecifier *qualifier) {
1881 switch (qualifier->getKind()) {
1882 case NestedNameSpecifier::Global:
1883 // nothing
1884 return;
1885
1886 case NestedNameSpecifier::Super:
1887 llvm_unreachable("Can't mangle __super specifier")::llvm::llvm_unreachable_internal("Can't mangle __super specifier"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1887)
;
1888
1889 case NestedNameSpecifier::Namespace:
1890 mangleName(qualifier->getAsNamespace());
1891 return;
1892
1893 case NestedNameSpecifier::NamespaceAlias:
1894 mangleName(qualifier->getAsNamespaceAlias()->getNamespace());
1895 return;
1896
1897 case NestedNameSpecifier::TypeSpec:
1898 case NestedNameSpecifier::TypeSpecWithTemplate:
1899 manglePrefix(QualType(qualifier->getAsType(), 0));
1900 return;
1901
1902 case NestedNameSpecifier::Identifier:
1903 // Member expressions can have these without prefixes, but that
1904 // should end up in mangleUnresolvedPrefix instead.
1905 assert(qualifier->getPrefix())((qualifier->getPrefix()) ? static_cast<void> (0) : __assert_fail
("qualifier->getPrefix()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1905, __PRETTY_FUNCTION__))
;
1906 manglePrefix(qualifier->getPrefix());
1907
1908 mangleSourceName(qualifier->getAsIdentifier());
1909 return;
1910 }
1911
1912 llvm_unreachable("unexpected nested name specifier")::llvm::llvm_unreachable_internal("unexpected nested name specifier"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1912)
;
1913}
1914
1915void CXXNameMangler::manglePrefix(const DeclContext *DC, bool NoFunction) {
1916 // <prefix> ::= <prefix> <unqualified-name>
1917 // ::= <template-prefix> <template-args>
1918 // ::= <template-param>
1919 // ::= # empty
1920 // ::= <substitution>
1921
1922 DC = IgnoreLinkageSpecDecls(DC);
1923
1924 if (DC->isTranslationUnit())
1925 return;
1926
1927 if (NoFunction && isLocalContainerContext(DC))
1928 return;
1929
1930 assert(!isLocalContainerContext(DC))((!isLocalContainerContext(DC)) ? static_cast<void> (0)
: __assert_fail ("!isLocalContainerContext(DC)", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1930, __PRETTY_FUNCTION__))
;
1931
1932 const NamedDecl *ND = cast<NamedDecl>(DC);
1933 if (mangleSubstitution(ND))
1934 return;
1935
1936 // Check if we have a template.
1937 const TemplateArgumentList *TemplateArgs = nullptr;
1938 if (GlobalDecl TD = isTemplate(ND, TemplateArgs)) {
1939 mangleTemplatePrefix(TD);
1940 mangleTemplateArgs(*TemplateArgs);
1941 } else {
1942 manglePrefix(getEffectiveDeclContext(ND), NoFunction);
1943 mangleUnqualifiedName(ND, nullptr);
1944 }
1945
1946 addSubstitution(ND);
1947}
1948
1949void CXXNameMangler::mangleTemplatePrefix(TemplateName Template) {
1950 // <template-prefix> ::= <prefix> <template unqualified-name>
1951 // ::= <template-param>
1952 // ::= <substitution>
1953 if (TemplateDecl *TD = Template.getAsTemplateDecl())
1954 return mangleTemplatePrefix(TD);
1955
1956 if (QualifiedTemplateName *Qualified = Template.getAsQualifiedTemplateName())
1957 manglePrefix(Qualified->getQualifier());
1958
1959 if (OverloadedTemplateStorage *Overloaded
1960 = Template.getAsOverloadedTemplate()) {
1961 mangleUnqualifiedName(GlobalDecl(), (*Overloaded->begin())->getDeclName(),
1962 UnknownArity, nullptr);
1963 return;
1964 }
1965
1966 DependentTemplateName *Dependent = Template.getAsDependentTemplateName();
1967 assert(Dependent && "Unknown template name kind?")((Dependent && "Unknown template name kind?") ? static_cast
<void> (0) : __assert_fail ("Dependent && \"Unknown template name kind?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 1967, __PRETTY_FUNCTION__))
;
1968 if (NestedNameSpecifier *Qualifier = Dependent->getQualifier())
1969 manglePrefix(Qualifier);
1970 mangleUnscopedTemplateName(Template, /* AdditionalAbiTags */ nullptr);
1971}
1972
1973void CXXNameMangler::mangleTemplatePrefix(GlobalDecl GD,
1974 bool NoFunction) {
1975 const TemplateDecl *ND = cast<TemplateDecl>(GD.getDecl());
1976 // <template-prefix> ::= <prefix> <template unqualified-name>
1977 // ::= <template-param>
1978 // ::= <substitution>
1979 // <template-template-param> ::= <template-param>
1980 // <substitution>
1981
1982 if (mangleSubstitution(ND))
1983 return;
1984
1985 // <template-template-param> ::= <template-param>
1986 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) {
1987 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
1988 } else {
1989 manglePrefix(getEffectiveDeclContext(ND), NoFunction);
1990 if (isa<BuiltinTemplateDecl>(ND) || isa<ConceptDecl>(ND))
1991 mangleUnqualifiedName(GD, nullptr);
1992 else
1993 mangleUnqualifiedName(GD.getWithDecl(ND->getTemplatedDecl()), nullptr);
1994 }
1995
1996 addSubstitution(ND);
1997}
1998
1999/// Mangles a template name under the production <type>. Required for
2000/// template template arguments.
2001/// <type> ::= <class-enum-type>
2002/// ::= <template-param>
2003/// ::= <substitution>
2004void CXXNameMangler::mangleType(TemplateName TN) {
2005 if (mangleSubstitution(TN))
2006 return;
2007
2008 TemplateDecl *TD = nullptr;
2009
2010 switch (TN.getKind()) {
2011 case TemplateName::QualifiedTemplate:
2012 TD = TN.getAsQualifiedTemplateName()->getTemplateDecl();
2013 goto HaveDecl;
2014
2015 case TemplateName::Template:
2016 TD = TN.getAsTemplateDecl();
2017 goto HaveDecl;
2018
2019 HaveDecl:
2020 if (auto *TTP = dyn_cast<TemplateTemplateParmDecl>(TD))
2021 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
2022 else
2023 mangleName(TD);
2024 break;
2025
2026 case TemplateName::OverloadedTemplate:
2027 case TemplateName::AssumedTemplate:
2028 llvm_unreachable("can't mangle an overloaded template name as a <type>")::llvm::llvm_unreachable_internal("can't mangle an overloaded template name as a <type>"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2028)
;
2029
2030 case TemplateName::DependentTemplate: {
2031 const DependentTemplateName *Dependent = TN.getAsDependentTemplateName();
2032 assert(Dependent->isIdentifier())((Dependent->isIdentifier()) ? static_cast<void> (0)
: __assert_fail ("Dependent->isIdentifier()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2032, __PRETTY_FUNCTION__))
;
2033
2034 // <class-enum-type> ::= <name>
2035 // <name> ::= <nested-name>
2036 mangleUnresolvedPrefix(Dependent->getQualifier());
2037 mangleSourceName(Dependent->getIdentifier());
2038 break;
2039 }
2040
2041 case TemplateName::SubstTemplateTemplateParm: {
2042 // Substituted template parameters are mangled as the substituted
2043 // template. This will check for the substitution twice, which is
2044 // fine, but we have to return early so that we don't try to *add*
2045 // the substitution twice.
2046 SubstTemplateTemplateParmStorage *subst
2047 = TN.getAsSubstTemplateTemplateParm();
2048 mangleType(subst->getReplacement());
2049 return;
2050 }
2051
2052 case TemplateName::SubstTemplateTemplateParmPack: {
2053 // FIXME: not clear how to mangle this!
2054 // template <template <class> class T...> class A {
2055 // template <template <class> class U...> void foo(B<T,U> x...);
2056 // };
2057 Out << "_SUBSTPACK_";
2058 break;
2059 }
2060 }
2061
2062 addSubstitution(TN);
2063}
2064
2065bool CXXNameMangler::mangleUnresolvedTypeOrSimpleId(QualType Ty,
2066 StringRef Prefix) {
2067 // Only certain other types are valid as prefixes; enumerate them.
2068 switch (Ty->getTypeClass()) {
2069 case Type::Builtin:
2070 case Type::Complex:
2071 case Type::Adjusted:
2072 case Type::Decayed:
2073 case Type::Pointer:
2074 case Type::BlockPointer:
2075 case Type::LValueReference:
2076 case Type::RValueReference:
2077 case Type::MemberPointer:
2078 case Type::ConstantArray:
2079 case Type::IncompleteArray:
2080 case Type::VariableArray:
2081 case Type::DependentSizedArray:
2082 case Type::DependentAddressSpace:
2083 case Type::DependentVector:
2084 case Type::DependentSizedExtVector:
2085 case Type::Vector:
2086 case Type::ExtVector:
2087 case Type::ConstantMatrix:
2088 case Type::DependentSizedMatrix:
2089 case Type::FunctionProto:
2090 case Type::FunctionNoProto:
2091 case Type::Paren:
2092 case Type::Attributed:
2093 case Type::Auto:
2094 case Type::DeducedTemplateSpecialization:
2095 case Type::PackExpansion:
2096 case Type::ObjCObject:
2097 case Type::ObjCInterface:
2098 case Type::ObjCObjectPointer:
2099 case Type::ObjCTypeParam:
2100 case Type::Atomic:
2101 case Type::Pipe:
2102 case Type::MacroQualified:
2103 case Type::ExtInt:
2104 case Type::DependentExtInt:
2105 llvm_unreachable("type is illegal as a nested name specifier")::llvm::llvm_unreachable_internal("type is illegal as a nested name specifier"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2105)
;
2106
2107 case Type::SubstTemplateTypeParmPack:
2108 // FIXME: not clear how to mangle this!
2109 // template <class T...> class A {
2110 // template <class U...> void foo(decltype(T::foo(U())) x...);
2111 // };
2112 Out << "_SUBSTPACK_";
2113 break;
2114
2115 // <unresolved-type> ::= <template-param>
2116 // ::= <decltype>
2117 // ::= <template-template-param> <template-args>
2118 // (this last is not official yet)
2119 case Type::TypeOfExpr:
2120 case Type::TypeOf:
2121 case Type::Decltype:
2122 case Type::TemplateTypeParm:
2123 case Type::UnaryTransform:
2124 case Type::SubstTemplateTypeParm:
2125 unresolvedType:
2126 // Some callers want a prefix before the mangled type.
2127 Out << Prefix;
2128
2129 // This seems to do everything we want. It's not really
2130 // sanctioned for a substituted template parameter, though.
2131 mangleType(Ty);
2132
2133 // We never want to print 'E' directly after an unresolved-type,
2134 // so we return directly.
2135 return true;
2136
2137 case Type::Typedef:
2138 mangleSourceNameWithAbiTags(cast<TypedefType>(Ty)->getDecl());
2139 break;
2140
2141 case Type::UnresolvedUsing:
2142 mangleSourceNameWithAbiTags(
2143 cast<UnresolvedUsingType>(Ty)->getDecl());
2144 break;
2145
2146 case Type::Enum:
2147 case Type::Record:
2148 mangleSourceNameWithAbiTags(cast<TagType>(Ty)->getDecl());
2149 break;
2150
2151 case Type::TemplateSpecialization: {
2152 const TemplateSpecializationType *TST =
2153 cast<TemplateSpecializationType>(Ty);
2154 TemplateName TN = TST->getTemplateName();
2155 switch (TN.getKind()) {
2156 case TemplateName::Template:
2157 case TemplateName::QualifiedTemplate: {
2158 TemplateDecl *TD = TN.getAsTemplateDecl();
2159
2160 // If the base is a template template parameter, this is an
2161 // unresolved type.
2162 assert(TD && "no template for template specialization type")((TD && "no template for template specialization type"
) ? static_cast<void> (0) : __assert_fail ("TD && \"no template for template specialization type\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2162, __PRETTY_FUNCTION__))
;
2163 if (isa<TemplateTemplateParmDecl>(TD))
2164 goto unresolvedType;
2165
2166 mangleSourceNameWithAbiTags(TD);
2167 break;
2168 }
2169
2170 case TemplateName::OverloadedTemplate:
2171 case TemplateName::AssumedTemplate:
2172 case TemplateName::DependentTemplate:
2173 llvm_unreachable("invalid base for a template specialization type")::llvm::llvm_unreachable_internal("invalid base for a template specialization type"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2173)
;
2174
2175 case TemplateName::SubstTemplateTemplateParm: {
2176 SubstTemplateTemplateParmStorage *subst =
2177 TN.getAsSubstTemplateTemplateParm();
2178 mangleExistingSubstitution(subst->getReplacement());
2179 break;
2180 }
2181
2182 case TemplateName::SubstTemplateTemplateParmPack: {
2183 // FIXME: not clear how to mangle this!
2184 // template <template <class U> class T...> class A {
2185 // template <class U...> void foo(decltype(T<U>::foo) x...);
2186 // };
2187 Out << "_SUBSTPACK_";
2188 break;
2189 }
2190 }
2191
2192 mangleTemplateArgs(TST->getArgs(), TST->getNumArgs());
2193 break;
2194 }
2195
2196 case Type::InjectedClassName:
2197 mangleSourceNameWithAbiTags(
2198 cast<InjectedClassNameType>(Ty)->getDecl());
2199 break;
2200
2201 case Type::DependentName:
2202 mangleSourceName(cast<DependentNameType>(Ty)->getIdentifier());
2203 break;
2204
2205 case Type::DependentTemplateSpecialization: {
2206 const DependentTemplateSpecializationType *DTST =
2207 cast<DependentTemplateSpecializationType>(Ty);
2208 mangleSourceName(DTST->getIdentifier());
2209 mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs());
2210 break;
2211 }
2212
2213 case Type::Elaborated:
2214 return mangleUnresolvedTypeOrSimpleId(
2215 cast<ElaboratedType>(Ty)->getNamedType(), Prefix);
2216 }
2217
2218 return false;
2219}
2220
2221void CXXNameMangler::mangleOperatorName(DeclarationName Name, unsigned Arity) {
2222 switch (Name.getNameKind()) {
2223 case DeclarationName::CXXConstructorName:
2224 case DeclarationName::CXXDestructorName:
2225 case DeclarationName::CXXDeductionGuideName:
2226 case DeclarationName::CXXUsingDirective:
2227 case DeclarationName::Identifier:
2228 case DeclarationName::ObjCMultiArgSelector:
2229 case DeclarationName::ObjCOneArgSelector:
2230 case DeclarationName::ObjCZeroArgSelector:
2231 llvm_unreachable("Not an operator name")::llvm::llvm_unreachable_internal("Not an operator name", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2231)
;
2232
2233 case DeclarationName::CXXConversionFunctionName:
2234 // <operator-name> ::= cv <type> # (cast)
2235 Out << "cv";
2236 mangleType(Name.getCXXNameType());
2237 break;
2238
2239 case DeclarationName::CXXLiteralOperatorName:
2240 Out << "li";
2241 mangleSourceName(Name.getCXXLiteralIdentifier());
2242 return;
2243
2244 case DeclarationName::CXXOperatorName:
2245 mangleOperatorName(Name.getCXXOverloadedOperator(), Arity);
2246 break;
2247 }
2248}
2249
2250void
2251CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) {
2252 switch (OO) {
2253 // <operator-name> ::= nw # new
2254 case OO_New: Out << "nw"; break;
2255 // ::= na # new[]
2256 case OO_Array_New: Out << "na"; break;
2257 // ::= dl # delete
2258 case OO_Delete: Out << "dl"; break;
2259 // ::= da # delete[]
2260 case OO_Array_Delete: Out << "da"; break;
2261 // ::= ps # + (unary)
2262 // ::= pl # + (binary or unknown)
2263 case OO_Plus:
2264 Out << (Arity == 1? "ps" : "pl"); break;
2265 // ::= ng # - (unary)
2266 // ::= mi # - (binary or unknown)
2267 case OO_Minus:
2268 Out << (Arity == 1? "ng" : "mi"); break;
2269 // ::= ad # & (unary)
2270 // ::= an # & (binary or unknown)
2271 case OO_Amp:
2272 Out << (Arity == 1? "ad" : "an"); break;
2273 // ::= de # * (unary)
2274 // ::= ml # * (binary or unknown)
2275 case OO_Star:
2276 // Use binary when unknown.
2277 Out << (Arity == 1? "de" : "ml"); break;
2278 // ::= co # ~
2279 case OO_Tilde: Out << "co"; break;
2280 // ::= dv # /
2281 case OO_Slash: Out << "dv"; break;
2282 // ::= rm # %
2283 case OO_Percent: Out << "rm"; break;
2284 // ::= or # |
2285 case OO_Pipe: Out << "or"; break;
2286 // ::= eo # ^
2287 case OO_Caret: Out << "eo"; break;
2288 // ::= aS # =
2289 case OO_Equal: Out << "aS"; break;
2290 // ::= pL # +=
2291 case OO_PlusEqual: Out << "pL"; break;
2292 // ::= mI # -=
2293 case OO_MinusEqual: Out << "mI"; break;
2294 // ::= mL # *=
2295 case OO_StarEqual: Out << "mL"; break;
2296 // ::= dV # /=
2297 case OO_SlashEqual: Out << "dV"; break;
2298 // ::= rM # %=
2299 case OO_PercentEqual: Out << "rM"; break;
2300 // ::= aN # &=
2301 case OO_AmpEqual: Out << "aN"; break;
2302 // ::= oR # |=
2303 case OO_PipeEqual: Out << "oR"; break;
2304 // ::= eO # ^=
2305 case OO_CaretEqual: Out << "eO"; break;
2306 // ::= ls # <<
2307 case OO_LessLess: Out << "ls"; break;
2308 // ::= rs # >>
2309 case OO_GreaterGreater: Out << "rs"; break;
2310 // ::= lS # <<=
2311 case OO_LessLessEqual: Out << "lS"; break;
2312 // ::= rS # >>=
2313 case OO_GreaterGreaterEqual: Out << "rS"; break;
2314 // ::= eq # ==
2315 case OO_EqualEqual: Out << "eq"; break;
2316 // ::= ne # !=
2317 case OO_ExclaimEqual: Out << "ne"; break;
2318 // ::= lt # <
2319 case OO_Less: Out << "lt"; break;
2320 // ::= gt # >
2321 case OO_Greater: Out << "gt"; break;
2322 // ::= le # <=
2323 case OO_LessEqual: Out << "le"; break;
2324 // ::= ge # >=
2325 case OO_GreaterEqual: Out << "ge"; break;
2326 // ::= nt # !
2327 case OO_Exclaim: Out << "nt"; break;
2328 // ::= aa # &&
2329 case OO_AmpAmp: Out << "aa"; break;
2330 // ::= oo # ||
2331 case OO_PipePipe: Out << "oo"; break;
2332 // ::= pp # ++
2333 case OO_PlusPlus: Out << "pp"; break;
2334 // ::= mm # --
2335 case OO_MinusMinus: Out << "mm"; break;
2336 // ::= cm # ,
2337 case OO_Comma: Out << "cm"; break;
2338 // ::= pm # ->*
2339 case OO_ArrowStar: Out << "pm"; break;
2340 // ::= pt # ->
2341 case OO_Arrow: Out << "pt"; break;
2342 // ::= cl # ()
2343 case OO_Call: Out << "cl"; break;
2344 // ::= ix # []
2345 case OO_Subscript: Out << "ix"; break;
2346
2347 // ::= qu # ?
2348 // The conditional operator can't be overloaded, but we still handle it when
2349 // mangling expressions.
2350 case OO_Conditional: Out << "qu"; break;
2351 // Proposal on cxx-abi-dev, 2015-10-21.
2352 // ::= aw # co_await
2353 case OO_Coawait: Out << "aw"; break;
2354 // Proposed in cxx-abi github issue 43.
2355 // ::= ss # <=>
2356 case OO_Spaceship: Out << "ss"; break;
2357
2358 case OO_None:
2359 case NUM_OVERLOADED_OPERATORS:
2360 llvm_unreachable("Not an overloaded operator")::llvm::llvm_unreachable_internal("Not an overloaded operator"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2360)
;
2361 }
2362}
2363
2364void CXXNameMangler::mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST) {
2365 // Vendor qualifiers come first and if they are order-insensitive they must
2366 // be emitted in reversed alphabetical order, see Itanium ABI 5.1.5.
2367
2368 // <type> ::= U <addrspace-expr>
2369 if (DAST) {
2370 Out << "U2ASI";
2371 mangleExpression(DAST->getAddrSpaceExpr());
2372 Out << "E";
2373 }
2374
2375 // Address space qualifiers start with an ordinary letter.
2376 if (Quals.hasAddressSpace()) {
2377 // Address space extension:
2378 //
2379 // <type> ::= U <target-addrspace>
2380 // <type> ::= U <OpenCL-addrspace>
2381 // <type> ::= U <CUDA-addrspace>
2382
2383 SmallString<64> ASString;
2384 LangAS AS = Quals.getAddressSpace();
2385
2386 if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
2387 // <target-addrspace> ::= "AS" <address-space-number>
2388 unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
2389 if (TargetAS != 0)
2390 ASString = "AS" + llvm::utostr(TargetAS);
2391 } else {
2392 switch (AS) {
2393 default: llvm_unreachable("Not a language specific address space")::llvm::llvm_unreachable_internal("Not a language specific address space"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2393)
;
2394 // <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" |
2395 // "private"| "generic" | "device" |
2396 // "host" ]
2397 case LangAS::opencl_global:
2398 ASString = "CLglobal";
2399 break;
2400 case LangAS::opencl_global_device:
2401 ASString = "CLdevice";
2402 break;
2403 case LangAS::opencl_global_host:
2404 ASString = "CLhost";
2405 break;
2406 case LangAS::opencl_local:
2407 ASString = "CLlocal";
2408 break;
2409 case LangAS::opencl_constant:
2410 ASString = "CLconstant";
2411 break;
2412 case LangAS::opencl_private:
2413 ASString = "CLprivate";
2414 break;
2415 case LangAS::opencl_generic:
2416 ASString = "CLgeneric";
2417 break;
2418 // <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ]
2419 case LangAS::cuda_device:
2420 ASString = "CUdevice";
2421 break;
2422 case LangAS::cuda_constant:
2423 ASString = "CUconstant";
2424 break;
2425 case LangAS::cuda_shared:
2426 ASString = "CUshared";
2427 break;
2428 // <ptrsize-addrspace> ::= [ "ptr32_sptr" | "ptr32_uptr" | "ptr64" ]
2429 case LangAS::ptr32_sptr:
2430 ASString = "ptr32_sptr";
2431 break;
2432 case LangAS::ptr32_uptr:
2433 ASString = "ptr32_uptr";
2434 break;
2435 case LangAS::ptr64:
2436 ASString = "ptr64";
2437 break;
2438 }
2439 }
2440 if (!ASString.empty())
2441 mangleVendorQualifier(ASString);
2442 }
2443
2444 // The ARC ownership qualifiers start with underscores.
2445 // Objective-C ARC Extension:
2446 //
2447 // <type> ::= U "__strong"
2448 // <type> ::= U "__weak"
2449 // <type> ::= U "__autoreleasing"
2450 //
2451 // Note: we emit __weak first to preserve the order as
2452 // required by the Itanium ABI.
2453 if (Quals.getObjCLifetime() == Qualifiers::OCL_Weak)
2454 mangleVendorQualifier("__weak");
2455
2456 // __unaligned (from -fms-extensions)
2457 if (Quals.hasUnaligned())
2458 mangleVendorQualifier("__unaligned");
2459
2460 // Remaining ARC ownership qualifiers.
2461 switch (Quals.getObjCLifetime()) {
2462 case Qualifiers::OCL_None:
2463 break;
2464
2465 case Qualifiers::OCL_Weak:
2466 // Do nothing as we already handled this case above.
2467 break;
2468
2469 case Qualifiers::OCL_Strong:
2470 mangleVendorQualifier("__strong");
2471 break;
2472
2473 case Qualifiers::OCL_Autoreleasing:
2474 mangleVendorQualifier("__autoreleasing");
2475 break;
2476
2477 case Qualifiers::OCL_ExplicitNone:
2478 // The __unsafe_unretained qualifier is *not* mangled, so that
2479 // __unsafe_unretained types in ARC produce the same manglings as the
2480 // equivalent (but, naturally, unqualified) types in non-ARC, providing
2481 // better ABI compatibility.
2482 //
2483 // It's safe to do this because unqualified 'id' won't show up
2484 // in any type signatures that need to be mangled.
2485 break;
2486 }
2487
2488 // <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const
2489 if (Quals.hasRestrict())
2490 Out << 'r';
2491 if (Quals.hasVolatile())
2492 Out << 'V';
2493 if (Quals.hasConst())
2494 Out << 'K';
2495}
2496
2497void CXXNameMangler::mangleVendorQualifier(StringRef name) {
2498 Out << 'U' << name.size() << name;
2499}
2500
2501void CXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) {
2502 // <ref-qualifier> ::= R # lvalue reference
2503 // ::= O # rvalue-reference
2504 switch (RefQualifier) {
2505 case RQ_None:
2506 break;
2507
2508 case RQ_LValue:
2509 Out << 'R';
2510 break;
2511
2512 case RQ_RValue:
2513 Out << 'O';
2514 break;
2515 }
2516}
2517
2518void CXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) {
2519 Context.mangleObjCMethodName(MD, Out);
2520}
2521
2522static bool isTypeSubstitutable(Qualifiers Quals, const Type *Ty,
2523 ASTContext &Ctx) {
2524 if (Quals)
2525 return true;
2526 if (Ty->isSpecificBuiltinType(BuiltinType::ObjCSel))
2527 return true;
2528 if (Ty->isOpenCLSpecificType())
2529 return true;
2530 if (Ty->isBuiltinType())
2531 return false;
2532 // Through to Clang 6.0, we accidentally treated undeduced auto types as
2533 // substitution candidates.
2534 if (Ctx.getLangOpts().getClangABICompat() > LangOptions::ClangABI::Ver6 &&
2535 isa<AutoType>(Ty))
2536 return false;
2537 return true;
2538}
2539
2540void CXXNameMangler::mangleType(QualType T) {
2541 // If our type is instantiation-dependent but not dependent, we mangle
2542 // it as it was written in the source, removing any top-level sugar.
2543 // Otherwise, use the canonical type.
2544 //
2545 // FIXME: This is an approximation of the instantiation-dependent name
2546 // mangling rules, since we should really be using the type as written and
2547 // augmented via semantic analysis (i.e., with implicit conversions and
2548 // default template arguments) for any instantiation-dependent type.
2549 // Unfortunately, that requires several changes to our AST:
2550 // - Instantiation-dependent TemplateSpecializationTypes will need to be
2551 // uniqued, so that we can handle substitutions properly
2552 // - Default template arguments will need to be represented in the
2553 // TemplateSpecializationType, since they need to be mangled even though
2554 // they aren't written.
2555 // - Conversions on non-type template arguments need to be expressed, since
2556 // they can affect the mangling of sizeof/alignof.
2557 //
2558 // FIXME: This is wrong when mapping to the canonical type for a dependent
2559 // type discards instantiation-dependent portions of the type, such as for:
2560 //
2561 // template<typename T, int N> void f(T (&)[sizeof(N)]);
2562 // template<typename T> void f(T() throw(typename T::type)); (pre-C++17)
2563 //
2564 // It's also wrong in the opposite direction when instantiation-dependent,
2565 // canonically-equivalent types differ in some irrelevant portion of inner
2566 // type sugar. In such cases, we fail to form correct substitutions, eg:
2567 //
2568 // template<int N> void f(A<sizeof(N)> *, A<sizeof(N)> (*));
2569 //
2570 // We should instead canonicalize the non-instantiation-dependent parts,
2571 // regardless of whether the type as a whole is dependent or instantiation
2572 // dependent.
2573 if (!T->isInstantiationDependentType() || T->isDependentType())
2574 T = T.getCanonicalType();
2575 else {
2576 // Desugar any types that are purely sugar.
2577 do {
2578 // Don't desugar through template specialization types that aren't
2579 // type aliases. We need to mangle the template arguments as written.
2580 if (const TemplateSpecializationType *TST
2581 = dyn_cast<TemplateSpecializationType>(T))
2582 if (!TST->isTypeAlias())
2583 break;
2584
2585 QualType Desugared
2586 = T.getSingleStepDesugaredType(Context.getASTContext());
2587 if (Desugared == T)
2588 break;
2589
2590 T = Desugared;
2591 } while (true);
2592 }
2593 SplitQualType split = T.split();
2594 Qualifiers quals = split.Quals;
2595 const Type *ty = split.Ty;
2596
2597 bool isSubstitutable =
2598 isTypeSubstitutable(quals, ty, Context.getASTContext());
2599 if (isSubstitutable && mangleSubstitution(T))
2600 return;
2601
2602 // If we're mangling a qualified array type, push the qualifiers to
2603 // the element type.
2604 if (quals && isa<ArrayType>(T)) {
2605 ty = Context.getASTContext().getAsArrayType(T);
2606 quals = Qualifiers();
2607
2608 // Note that we don't update T: we want to add the
2609 // substitution at the original type.
2610 }
2611
2612 if (quals || ty->isDependentAddressSpaceType()) {
2613 if (const DependentAddressSpaceType *DAST =
2614 dyn_cast<DependentAddressSpaceType>(ty)) {
2615 SplitQualType splitDAST = DAST->getPointeeType().split();
2616 mangleQualifiers(splitDAST.Quals, DAST);
2617 mangleType(QualType(splitDAST.Ty, 0));
2618 } else {
2619 mangleQualifiers(quals);
2620
2621 // Recurse: even if the qualified type isn't yet substitutable,
2622 // the unqualified type might be.
2623 mangleType(QualType(ty, 0));
2624 }
2625 } else {
2626 switch (ty->getTypeClass()) {
2627#define ABSTRACT_TYPE(CLASS, PARENT)
2628#define NON_CANONICAL_TYPE(CLASS, PARENT) \
2629 case Type::CLASS: \
2630 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~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2630)
; \
2631 return;
2632#define TYPE(CLASS, PARENT) \
2633 case Type::CLASS: \
2634 mangleType(static_cast<const CLASS##Type*>(ty)); \
2635 break;
2636#include "clang/AST/TypeNodes.inc"
2637 }
2638 }
2639
2640 // Add the substitution.
2641 if (isSubstitutable)
2642 addSubstitution(T);
2643}
2644
2645void CXXNameMangler::mangleNameOrStandardSubstitution(const NamedDecl *ND) {
2646 if (!mangleStandardSubstitution(ND))
2647 mangleName(ND);
2648}
2649
2650void CXXNameMangler::mangleType(const BuiltinType *T) {
2651 // <type> ::= <builtin-type>
2652 // <builtin-type> ::= v # void
2653 // ::= w # wchar_t
2654 // ::= b # bool
2655 // ::= c # char
2656 // ::= a # signed char
2657 // ::= h # unsigned char
2658 // ::= s # short
2659 // ::= t # unsigned short
2660 // ::= i # int
2661 // ::= j # unsigned int
2662 // ::= l # long
2663 // ::= m # unsigned long
2664 // ::= x # long long, __int64
2665 // ::= y # unsigned long long, __int64
2666 // ::= n # __int128
2667 // ::= o # unsigned __int128
2668 // ::= f # float
2669 // ::= d # double
2670 // ::= e # long double, __float80
2671 // ::= g # __float128
2672 // UNSUPPORTED: ::= Dd # IEEE 754r decimal floating point (64 bits)
2673 // UNSUPPORTED: ::= De # IEEE 754r decimal floating point (128 bits)
2674 // UNSUPPORTED: ::= Df # IEEE 754r decimal floating point (32 bits)
2675 // ::= Dh # IEEE 754r half-precision floating point (16 bits)
2676 // ::= DF <number> _ # ISO/IEC TS 18661 binary floating point type _FloatN (N bits);
2677 // ::= Di # char32_t
2678 // ::= Ds # char16_t
2679 // ::= Dn # std::nullptr_t (i.e., decltype(nullptr))
2680 // ::= u <source-name> # vendor extended type
2681 std::string type_name;
2682 switch (T->getKind()) {
2683 case BuiltinType::Void:
2684 Out << 'v';
2685 break;
2686 case BuiltinType::Bool:
2687 Out << 'b';
2688 break;
2689 case BuiltinType::Char_U:
2690 case BuiltinType::Char_S:
2691 Out << 'c';
2692 break;
2693 case BuiltinType::UChar:
2694 Out << 'h';
2695 break;
2696 case BuiltinType::UShort:
2697 Out << 't';
2698 break;
2699 case BuiltinType::UInt:
2700 Out << 'j';
2701 break;
2702 case BuiltinType::ULong:
2703 Out << 'm';
2704 break;
2705 case BuiltinType::ULongLong:
2706 Out << 'y';
2707 break;
2708 case BuiltinType::UInt128:
2709 Out << 'o';
2710 break;
2711 case BuiltinType::SChar:
2712 Out << 'a';
2713 break;
2714 case BuiltinType::WChar_S:
2715 case BuiltinType::WChar_U:
2716 Out << 'w';
2717 break;
2718 case BuiltinType::Char8:
2719 Out << "Du";
2720 break;
2721 case BuiltinType::Char16:
2722 Out << "Ds";
2723 break;
2724 case BuiltinType::Char32:
2725 Out << "Di";
2726 break;
2727 case BuiltinType::Short:
2728 Out << 's';
2729 break;
2730 case BuiltinType::Int:
2731 Out << 'i';
2732 break;
2733 case BuiltinType::Long:
2734 Out << 'l';
2735 break;
2736 case BuiltinType::LongLong:
2737 Out << 'x';
2738 break;
2739 case BuiltinType::Int128:
2740 Out << 'n';
2741 break;
2742 case BuiltinType::Float16:
2743 Out << "DF16_";
2744 break;
2745 case BuiltinType::ShortAccum:
2746 case BuiltinType::Accum:
2747 case BuiltinType::LongAccum:
2748 case BuiltinType::UShortAccum:
2749 case BuiltinType::UAccum:
2750 case BuiltinType::ULongAccum:
2751 case BuiltinType::ShortFract:
2752 case BuiltinType::Fract:
2753 case BuiltinType::LongFract:
2754 case BuiltinType::UShortFract:
2755 case BuiltinType::UFract:
2756 case BuiltinType::ULongFract:
2757 case BuiltinType::SatShortAccum:
2758 case BuiltinType::SatAccum:
2759 case BuiltinType::SatLongAccum:
2760 case BuiltinType::SatUShortAccum:
2761 case BuiltinType::SatUAccum:
2762 case BuiltinType::SatULongAccum:
2763 case BuiltinType::SatShortFract:
2764 case BuiltinType::SatFract:
2765 case BuiltinType::SatLongFract:
2766 case BuiltinType::SatUShortFract:
2767 case BuiltinType::SatUFract:
2768 case BuiltinType::SatULongFract:
2769 llvm_unreachable("Fixed point types are disabled for c++")::llvm::llvm_unreachable_internal("Fixed point types are disabled for c++"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2769)
;
2770 case BuiltinType::Half:
2771 Out << "Dh";
2772 break;
2773 case BuiltinType::Float:
2774 Out << 'f';
2775 break;
2776 case BuiltinType::Double:
2777 Out << 'd';
2778 break;
2779 case BuiltinType::LongDouble: {
2780 const TargetInfo *TI = getASTContext().getLangOpts().OpenMP &&
2781 getASTContext().getLangOpts().OpenMPIsDevice
2782 ? getASTContext().getAuxTargetInfo()
2783 : &getASTContext().getTargetInfo();
2784 Out << TI->getLongDoubleMangling();
2785 break;
2786 }
2787 case BuiltinType::Float128: {
2788 const TargetInfo *TI = getASTContext().getLangOpts().OpenMP &&
2789 getASTContext().getLangOpts().OpenMPIsDevice
2790 ? getASTContext().getAuxTargetInfo()
2791 : &getASTContext().getTargetInfo();
2792 Out << TI->getFloat128Mangling();
2793 break;
2794 }
2795 case BuiltinType::BFloat16: {
2796 const TargetInfo *TI = &getASTContext().getTargetInfo();
2797 Out << TI->getBFloat16Mangling();
2798 break;
2799 }
2800 case BuiltinType::NullPtr:
2801 Out << "Dn";
2802 break;
2803
2804#define BUILTIN_TYPE(Id, SingletonId)
2805#define PLACEHOLDER_TYPE(Id, SingletonId) \
2806 case BuiltinType::Id:
2807#include "clang/AST/BuiltinTypes.def"
2808 case BuiltinType::Dependent:
2809 if (!NullOut)
2810 llvm_unreachable("mangling a placeholder type")::llvm::llvm_unreachable_internal("mangling a placeholder type"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2810)
;
2811 break;
2812 case BuiltinType::ObjCId:
2813 Out << "11objc_object";
2814 break;
2815 case BuiltinType::ObjCClass:
2816 Out << "10objc_class";
2817 break;
2818 case BuiltinType::ObjCSel:
2819 Out << "13objc_selector";
2820 break;
2821#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
2822 case BuiltinType::Id: \
2823 type_name = "ocl_" #ImgType "_" #Suffix; \
2824 Out << type_name.size() << type_name; \
2825 break;
2826#include "clang/Basic/OpenCLImageTypes.def"
2827 case BuiltinType::OCLSampler:
2828 Out << "11ocl_sampler";
2829 break;
2830 case BuiltinType::OCLEvent:
2831 Out << "9ocl_event";
2832 break;
2833 case BuiltinType::OCLClkEvent:
2834 Out << "12ocl_clkevent";
2835 break;
2836 case BuiltinType::OCLQueue:
2837 Out << "9ocl_queue";
2838 break;
2839 case BuiltinType::OCLReserveID:
2840 Out << "13ocl_reserveid";
2841 break;
2842#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
2843 case BuiltinType::Id: \
2844 type_name = "ocl_" #ExtType; \
2845 Out << type_name.size() << type_name; \
2846 break;
2847#include "clang/Basic/OpenCLExtensionTypes.def"
2848 // The SVE types are effectively target-specific. The mangling scheme
2849 // is defined in the appendices to the Procedure Call Standard for the
2850 // Arm Architecture.
2851#define SVE_VECTOR_TYPE(InternalName, MangledName, Id, SingletonId, NumEls, \
2852 ElBits, IsSigned, IsFP, IsBF) \
2853 case BuiltinType::Id: \
2854 type_name = MangledName; \
2855 Out << (type_name == InternalName ? "u" : "") << type_name.size() \
2856 << type_name; \
2857 break;
2858#define SVE_PREDICATE_TYPE(InternalName, MangledName, Id, SingletonId, NumEls) \
2859 case BuiltinType::Id: \
2860 type_name = MangledName; \
2861 Out << (type_name == InternalName ? "u" : "") << type_name.size() \
2862 << type_name; \
2863 break;
2864#include "clang/Basic/AArch64SVEACLETypes.def"
2865 }
2866}
2867
2868StringRef CXXNameMangler::getCallingConvQualifierName(CallingConv CC) {
2869 switch (CC) {
2870 case CC_C:
2871 return "";
2872
2873 case CC_X86VectorCall:
2874 case CC_X86Pascal:
2875 case CC_X86RegCall:
2876 case CC_AAPCS:
2877 case CC_AAPCS_VFP:
2878 case CC_AArch64VectorCall:
2879 case CC_IntelOclBicc:
2880 case CC_SpirFunction:
2881 case CC_OpenCLKernel:
2882 case CC_PreserveMost:
2883 case CC_PreserveAll:
2884 // FIXME: we should be mangling all of the above.
2885 return "";
2886
2887 case CC_X86ThisCall:
2888 // FIXME: To match mingw GCC, thiscall should only be mangled in when it is
2889 // used explicitly. At this point, we don't have that much information in
2890 // the AST, since clang tends to bake the convention into the canonical
2891 // function type. thiscall only rarely used explicitly, so don't mangle it
2892 // for now.
2893 return "";
2894
2895 case CC_X86StdCall:
2896 return "stdcall";
2897 case CC_X86FastCall:
2898 return "fastcall";
2899 case CC_X86_64SysV:
2900 return "sysv_abi";
2901 case CC_Win64:
2902 return "ms_abi";
2903 case CC_Swift:
2904 return "swiftcall";
2905 }
2906 llvm_unreachable("bad calling convention")::llvm::llvm_unreachable_internal("bad calling convention", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2906)
;
2907}
2908
2909void CXXNameMangler::mangleExtFunctionInfo(const FunctionType *T) {
2910 // Fast path.
2911 if (T->getExtInfo() == FunctionType::ExtInfo())
2912 return;
2913
2914 // Vendor-specific qualifiers are emitted in reverse alphabetical order.
2915 // This will get more complicated in the future if we mangle other
2916 // things here; but for now, since we mangle ns_returns_retained as
2917 // a qualifier on the result type, we can get away with this:
2918 StringRef CCQualifier = getCallingConvQualifierName(T->getExtInfo().getCC());
2919 if (!CCQualifier.empty())
2920 mangleVendorQualifier(CCQualifier);
2921
2922 // FIXME: regparm
2923 // FIXME: noreturn
2924}
2925
2926void
2927CXXNameMangler::mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo PI) {
2928 // Vendor-specific qualifiers are emitted in reverse alphabetical order.
2929
2930 // Note that these are *not* substitution candidates. Demanglers might
2931 // have trouble with this if the parameter type is fully substituted.
2932
2933 switch (PI.getABI()) {
2934 case ParameterABI::Ordinary:
2935 break;
2936
2937 // All of these start with "swift", so they come before "ns_consumed".
2938 case ParameterABI::SwiftContext:
2939 case ParameterABI::SwiftErrorResult:
2940 case ParameterABI::SwiftIndirectResult:
2941 mangleVendorQualifier(getParameterABISpelling(PI.getABI()));
2942 break;
2943 }
2944
2945 if (PI.isConsumed())
2946 mangleVendorQualifier("ns_consumed");
2947
2948 if (PI.isNoEscape())
2949 mangleVendorQualifier("noescape");
2950}
2951
2952// <type> ::= <function-type>
2953// <function-type> ::= [<CV-qualifiers>] F [Y]
2954// <bare-function-type> [<ref-qualifier>] E
2955void CXXNameMangler::mangleType(const FunctionProtoType *T) {
2956 mangleExtFunctionInfo(T);
2957
2958 // Mangle CV-qualifiers, if present. These are 'this' qualifiers,
2959 // e.g. "const" in "int (A::*)() const".
2960 mangleQualifiers(T->getMethodQuals());
2961
2962 // Mangle instantiation-dependent exception-specification, if present,
2963 // per cxx-abi-dev proposal on 2016-10-11.
2964 if (T->hasInstantiationDependentExceptionSpec()) {
2965 if (isComputedNoexcept(T->getExceptionSpecType())) {
2966 Out << "DO";
2967 mangleExpression(T->getNoexceptExpr());
2968 Out << "E";
2969 } else {
2970 assert(T->getExceptionSpecType() == EST_Dynamic)((T->getExceptionSpecType() == EST_Dynamic) ? static_cast<
void> (0) : __assert_fail ("T->getExceptionSpecType() == EST_Dynamic"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 2970, __PRETTY_FUNCTION__))
;
2971 Out << "Dw";
2972 for (auto ExceptTy : T->exceptions())
2973 mangleType(ExceptTy);
2974 Out << "E";
2975 }
2976 } else if (T->isNothrow()) {
2977 Out << "Do";
2978 }
2979
2980 Out << 'F';
2981
2982 // FIXME: We don't have enough information in the AST to produce the 'Y'
2983 // encoding for extern "C" function types.
2984 mangleBareFunctionType(T, /*MangleReturnType=*/true);
2985
2986 // Mangle the ref-qualifier, if present.
2987 mangleRefQualifier(T->getRefQualifier());
2988
2989 Out << 'E';
2990}
2991
2992void CXXNameMangler::mangleType(const FunctionNoProtoType *T) {
2993 // Function types without prototypes can arise when mangling a function type
2994 // within an overloadable function in C. We mangle these as the absence of any
2995 // parameter types (not even an empty parameter list).
2996 Out << 'F';
2997
2998 FunctionTypeDepthState saved = FunctionTypeDepth.push();
2999
3000 FunctionTypeDepth.enterResultType();
3001 mangleType(T->getReturnType());
3002 FunctionTypeDepth.leaveResultType();
3003
3004 FunctionTypeDepth.pop(saved);
3005 Out << 'E';
3006}
3007
3008void CXXNameMangler::mangleBareFunctionType(const FunctionProtoType *Proto,
3009 bool MangleReturnType,
3010 const FunctionDecl *FD) {
3011 // Record that we're in a function type. See mangleFunctionParam
3012 // for details on what we're trying to achieve here.
3013 FunctionTypeDepthState saved = FunctionTypeDepth.push();
3014
3015 // <bare-function-type> ::= <signature type>+
3016 if (MangleReturnType) {
3017 FunctionTypeDepth.enterResultType();
3018
3019 // Mangle ns_returns_retained as an order-sensitive qualifier here.
3020 if (Proto->getExtInfo().getProducesResult() && FD == nullptr)
3021 mangleVendorQualifier("ns_returns_retained");
3022
3023 // Mangle the return type without any direct ARC ownership qualifiers.
3024 QualType ReturnTy = Proto->getReturnType();
3025 if (ReturnTy.getObjCLifetime()) {
3026 auto SplitReturnTy = ReturnTy.split();
3027 SplitReturnTy.Quals.removeObjCLifetime();
3028 ReturnTy = getASTContext().getQualifiedType(SplitReturnTy);
3029 }
3030 mangleType(ReturnTy);
3031
3032 FunctionTypeDepth.leaveResultType();
3033 }
3034
3035 if (Proto->getNumParams() == 0 && !Proto->isVariadic()) {
3036 // <builtin-type> ::= v # void
3037 Out << 'v';
3038
3039 FunctionTypeDepth.pop(saved);
3040 return;
3041 }
3042
3043 assert(!FD || FD->getNumParams() == Proto->getNumParams())((!FD || FD->getNumParams() == Proto->getNumParams()) ?
static_cast<void> (0) : __assert_fail ("!FD || FD->getNumParams() == Proto->getNumParams()"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3043, __PRETTY_FUNCTION__))
;
3044 for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) {
3045 // Mangle extended parameter info as order-sensitive qualifiers here.
3046 if (Proto->hasExtParameterInfos() && FD == nullptr) {
3047 mangleExtParameterInfo(Proto->getExtParameterInfo(I));
3048 }
3049
3050 // Mangle the type.
3051 QualType ParamTy = Proto->getParamType(I);
3052 mangleType(Context.getASTContext().getSignatureParameterType(ParamTy));
3053
3054 if (FD) {
3055 if (auto *Attr = FD->getParamDecl(I)->getAttr<PassObjectSizeAttr>()) {
3056 // Attr can only take 1 character, so we can hardcode the length below.
3057 assert(Attr->getType() <= 9 && Attr->getType() >= 0)((Attr->getType() <= 9 && Attr->getType() >=
0) ? static_cast<void> (0) : __assert_fail ("Attr->getType() <= 9 && Attr->getType() >= 0"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3057, __PRETTY_FUNCTION__))
;
3058 if (Attr->isDynamic())
3059 Out << "U25pass_dynamic_object_size" << Attr->getType();
3060 else
3061 Out << "U17pass_object_size" << Attr->getType();
3062 }
3063 }
3064 }
3065
3066 FunctionTypeDepth.pop(saved);
3067
3068 // <builtin-type> ::= z # ellipsis
3069 if (Proto->isVariadic())
3070 Out << 'z';
3071}
3072
3073// <type> ::= <class-enum-type>
3074// <class-enum-type> ::= <name>
3075void CXXNameMangler::mangleType(const UnresolvedUsingType *T) {
3076 mangleName(T->getDecl());
3077}
3078
3079// <type> ::= <class-enum-type>
3080// <class-enum-type> ::= <name>
3081void CXXNameMangler::mangleType(const EnumType *T) {
3082 mangleType(static_cast<const TagType*>(T));
3083}
3084void CXXNameMangler::mangleType(const RecordType *T) {
3085 mangleType(static_cast<const TagType*>(T));
3086}
3087void CXXNameMangler::mangleType(const TagType *T) {
3088 mangleName(T->getDecl());
3089}
3090
3091// <type> ::= <array-type>
3092// <array-type> ::= A <positive dimension number> _ <element type>
3093// ::= A [<dimension expression>] _ <element type>
3094void CXXNameMangler::mangleType(const ConstantArrayType *T) {
3095 Out << 'A' << T->getSize() << '_';
3096 mangleType(T->getElementType());
3097}
3098void CXXNameMangler::mangleType(const VariableArrayType *T) {
3099 Out << 'A';
3100 // decayed vla types (size 0) will just be skipped.
3101 if (T->getSizeExpr())
3102 mangleExpression(T->getSizeExpr());
3103 Out << '_';
3104 mangleType(T->getElementType());
3105}
3106void CXXNameMangler::mangleType(const DependentSizedArrayType *T) {
3107 Out << 'A';
3108 mangleExpression(T->getSizeExpr());
3109 Out << '_';
3110 mangleType(T->getElementType());
3111}
3112void CXXNameMangler::mangleType(const IncompleteArrayType *T) {
3113 Out << "A_";
3114 mangleType(T->getElementType());
3115}
3116
3117// <type> ::= <pointer-to-member-type>
3118// <pointer-to-member-type> ::= M <class type> <member type>
3119void CXXNameMangler::mangleType(const MemberPointerType *T) {
3120 Out << 'M';
3121 mangleType(QualType(T->getClass(), 0));
3122 QualType PointeeType = T->getPointeeType();
3123 if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) {
3124 mangleType(FPT);
3125
3126 // Itanium C++ ABI 5.1.8:
3127 //
3128 // The type of a non-static member function is considered to be different,
3129 // for the purposes of substitution, from the type of a namespace-scope or
3130 // static member function whose type appears similar. The types of two
3131 // non-static member functions are considered to be different, for the
3132 // purposes of substitution, if the functions are members of different
3133 // classes. In other words, for the purposes of substitution, the class of
3134 // which the function is a member is considered part of the type of
3135 // function.
3136
3137 // Given that we already substitute member function pointers as a
3138 // whole, the net effect of this rule is just to unconditionally
3139 // suppress substitution on the function type in a member pointer.
3140 // We increment the SeqID here to emulate adding an entry to the
3141 // substitution table.
3142 ++SeqID;
3143 } else
3144 mangleType(PointeeType);
3145}
3146
3147// <type> ::= <template-param>
3148void CXXNameMangler::mangleType(const TemplateTypeParmType *T) {
3149 mangleTemplateParameter(T->getDepth(), T->getIndex());
3150}
3151
3152// <type> ::= <template-param>
3153void CXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T) {
3154 // FIXME: not clear how to mangle this!
3155 // template <class T...> class A {
3156 // template <class U...> void foo(T(*)(U) x...);
3157 // };
3158 Out << "_SUBSTPACK_";
3159}
3160
3161// <type> ::= P <type> # pointer-to
3162void CXXNameMangler::mangleType(const PointerType *T) {
3163 Out << 'P';
3164 mangleType(T->getPointeeType());
3165}
3166void CXXNameMangler::mangleType(const ObjCObjectPointerType *T) {
3167 Out << 'P';
3168 mangleType(T->getPointeeType());
3169}
3170
3171// <type> ::= R <type> # reference-to
3172void CXXNameMangler::mangleType(const LValueReferenceType *T) {
3173 Out << 'R';
3174 mangleType(T->getPointeeType());
3175}
3176
3177// <type> ::= O <type> # rvalue reference-to (C++0x)
3178void CXXNameMangler::mangleType(const RValueReferenceType *T) {
3179 Out << 'O';
3180 mangleType(T->getPointeeType());
3181}
3182
3183// <type> ::= C <type> # complex pair (C 2000)
3184void CXXNameMangler::mangleType(const ComplexType *T) {
3185 Out << 'C';
3186 mangleType(T->getElementType());
3187}
3188
3189// ARM's ABI for Neon vector types specifies that they should be mangled as
3190// if they are structs (to match ARM's initial implementation). The
3191// vector type must be one of the special types predefined by ARM.
3192void CXXNameMangler::mangleNeonVectorType(const VectorType *T) {
3193 QualType EltType = T->getElementType();
3194 assert(EltType->isBuiltinType() && "Neon vector element not a BuiltinType")((EltType->isBuiltinType() && "Neon vector element not a BuiltinType"
) ? static_cast<void> (0) : __assert_fail ("EltType->isBuiltinType() && \"Neon vector element not a BuiltinType\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3194, __PRETTY_FUNCTION__))
;
3195 const char *EltName = nullptr;
3196 if (T->getVectorKind() == VectorType::NeonPolyVector) {
3197 switch (cast<BuiltinType>(EltType)->getKind()) {
3198 case BuiltinType::SChar:
3199 case BuiltinType::UChar:
3200 EltName = "poly8_t";
3201 break;
3202 case BuiltinType::Short:
3203 case BuiltinType::UShort:
3204 EltName = "poly16_t";
3205 break;
3206 case BuiltinType::LongLong:
3207 case BuiltinType::ULongLong:
3208 EltName = "poly64_t";
3209 break;
3210 default: llvm_unreachable("unexpected Neon polynomial vector element type")::llvm::llvm_unreachable_internal("unexpected Neon polynomial vector element type"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3210)
;
3211 }
3212 } else {
3213 switch (cast<BuiltinType>(EltType)->getKind()) {
3214 case BuiltinType::SChar: EltName = "int8_t"; break;
3215 case BuiltinType::UChar: EltName = "uint8_t"; break;
3216 case BuiltinType::Short: EltName = "int16_t"; break;
3217 case BuiltinType::UShort: EltName = "uint16_t"; break;
3218 case BuiltinType::Int: EltName = "int32_t"; break;
3219 case BuiltinType::UInt: EltName = "uint32_t"; break;
3220 case BuiltinType::LongLong: EltName = "int64_t"; break;
3221 case BuiltinType::ULongLong: EltName = "uint64_t"; break;
3222 case BuiltinType::Double: EltName = "float64_t"; break;
3223 case BuiltinType::Float: EltName = "float32_t"; break;
3224 case BuiltinType::Half: EltName = "float16_t"; break;
3225 case BuiltinType::BFloat16: EltName = "bfloat16_t"; break;
3226 default:
3227 llvm_unreachable("unexpected Neon vector element type")::llvm::llvm_unreachable_internal("unexpected Neon vector element type"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3227)
;
3228 }
3229 }
3230 const char *BaseName = nullptr;
3231 unsigned BitSize = (T->getNumElements() *
3232 getASTContext().getTypeSize(EltType));
3233 if (BitSize == 64)
3234 BaseName = "__simd64_";
3235 else {
3236 assert(BitSize == 128 && "Neon vector type not 64 or 128 bits")((BitSize == 128 && "Neon vector type not 64 or 128 bits"
) ? static_cast<void> (0) : __assert_fail ("BitSize == 128 && \"Neon vector type not 64 or 128 bits\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3236, __PRETTY_FUNCTION__))
;
3237 BaseName = "__simd128_";
3238 }
3239 Out << strlen(BaseName) + strlen(EltName);
3240 Out << BaseName << EltName;
3241}
3242
3243void CXXNameMangler::mangleNeonVectorType(const DependentVectorType *T) {
3244 DiagnosticsEngine &Diags = Context.getDiags();
3245 unsigned DiagID = Diags.getCustomDiagID(
3246 DiagnosticsEngine::Error,
3247 "cannot mangle this dependent neon vector type yet");
3248 Diags.Report(T->getAttributeLoc(), DiagID);
3249}
3250
3251static StringRef mangleAArch64VectorBase(const BuiltinType *EltType) {
3252 switch (EltType->getKind()) {
3253 case BuiltinType::SChar:
3254 return "Int8";
3255 case BuiltinType::Short:
3256 return "Int16";
3257 case BuiltinType::Int:
3258 return "Int32";
3259 case BuiltinType::Long:
3260 case BuiltinType::LongLong:
3261 return "Int64";
3262 case BuiltinType::UChar:
3263 return "Uint8";
3264 case BuiltinType::UShort:
3265 return "Uint16";
3266 case BuiltinType::UInt:
3267 return "Uint32";
3268 case BuiltinType::ULong:
3269 case BuiltinType::ULongLong:
3270 return "Uint64";
3271 case BuiltinType::Half:
3272 return "Float16";
3273 case BuiltinType::Float:
3274 return "Float32";
3275 case BuiltinType::Double:
3276 return "Float64";
3277 case BuiltinType::BFloat16:
3278 return "Bfloat16";
3279 default:
3280 llvm_unreachable("Unexpected vector element base type")::llvm::llvm_unreachable_internal("Unexpected vector element base type"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3280)
;
3281 }
3282}
3283
3284// AArch64's ABI for Neon vector types specifies that they should be mangled as
3285// the equivalent internal name. The vector type must be one of the special
3286// types predefined by ARM.
3287void CXXNameMangler::mangleAArch64NeonVectorType(const VectorType *T) {
3288 QualType EltType = T->getElementType();
3289 assert(EltType->isBuiltinType() && "Neon vector element not a BuiltinType")((EltType->isBuiltinType() && "Neon vector element not a BuiltinType"
) ? static_cast<void> (0) : __assert_fail ("EltType->isBuiltinType() && \"Neon vector element not a BuiltinType\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3289, __PRETTY_FUNCTION__))
;
3290 unsigned BitSize =
3291 (T->getNumElements() * getASTContext().getTypeSize(EltType));
3292 (void)BitSize; // Silence warning.
3293
3294 assert((BitSize == 64 || BitSize == 128) &&(((BitSize == 64 || BitSize == 128) && "Neon vector type not 64 or 128 bits"
) ? static_cast<void> (0) : __assert_fail ("(BitSize == 64 || BitSize == 128) && \"Neon vector type not 64 or 128 bits\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3295, __PRETTY_FUNCTION__))
3295 "Neon vector type not 64 or 128 bits")(((BitSize == 64 || BitSize == 128) && "Neon vector type not 64 or 128 bits"
) ? static_cast<void> (0) : __assert_fail ("(BitSize == 64 || BitSize == 128) && \"Neon vector type not 64 or 128 bits\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3295, __PRETTY_FUNCTION__))
;
3296
3297 StringRef EltName;
3298 if (T->getVectorKind() == VectorType::NeonPolyVector) {
3299 switch (cast<BuiltinType>(EltType)->getKind()) {
3300 case BuiltinType::UChar:
3301 EltName = "Poly8";
3302 break;
3303 case BuiltinType::UShort:
3304 EltName = "Poly16";
3305 break;
3306 case BuiltinType::ULong:
3307 case BuiltinType::ULongLong:
3308 EltName = "Poly64";
3309 break;
3310 default:
3311 llvm_unreachable("unexpected Neon polynomial vector element type")::llvm::llvm_unreachable_internal("unexpected Neon polynomial vector element type"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3311)
;
3312 }
3313 } else
3314 EltName = mangleAArch64VectorBase(cast<BuiltinType>(EltType));
3315
3316 std::string TypeName =
3317 ("__" + EltName + "x" + Twine(T->getNumElements()) + "_t").str();
3318 Out << TypeName.length() << TypeName;
3319}
3320void CXXNameMangler::mangleAArch64NeonVectorType(const DependentVectorType *T) {
3321 DiagnosticsEngine &Diags = Context.getDiags();
3322 unsigned DiagID = Diags.getCustomDiagID(
3323 DiagnosticsEngine::Error,
3324 "cannot mangle this dependent neon vector type yet");
3325 Diags.Report(T->getAttributeLoc(), DiagID);
3326}
3327
3328// The AArch64 ACLE specifies that fixed-length SVE vector and predicate types
3329// defined with the 'arm_sve_vector_bits' attribute map to the same AAPCS64
3330// type as the sizeless variants.
3331//
3332// The mangling scheme for VLS types is implemented as a "pseudo" template:
3333//
3334// '__SVE_VLS<<type>, <vector length>>'
3335//
3336// Combining the existing SVE type and a specific vector length (in bits).
3337// For example:
3338//
3339// typedef __SVInt32_t foo __attribute__((arm_sve_vector_bits(512)));
3340//
3341// is described as '__SVE_VLS<__SVInt32_t, 512u>' and mangled as:
3342//
3343// "9__SVE_VLSI" + base type mangling + "Lj" + __ARM_FEATURE_SVE_BITS + "EE"
3344//
3345// i.e. 9__SVE_VLSIu11__SVInt32_tLj512EE
3346//
3347// The latest ACLE specification (00bet5) does not contain details of this
3348// mangling scheme, it will be specified in the next revision. The mangling
3349// scheme is otherwise defined in the appendices to the Procedure Call Standard
3350// for the Arm Architecture, see
3351// https://github.com/ARM-software/abi-aa/blob/master/aapcs64/aapcs64.rst#appendix-c-mangling
3352void CXXNameMangler::mangleAArch64FixedSveVectorType(const VectorType *T) {
3353 assert((T->getVectorKind() == VectorType::SveFixedLengthDataVector ||(((T->getVectorKind() == VectorType::SveFixedLengthDataVector
|| T->getVectorKind() == VectorType::SveFixedLengthPredicateVector
) && "expected fixed-length SVE vector!") ? static_cast
<void> (0) : __assert_fail ("(T->getVectorKind() == VectorType::SveFixedLengthDataVector || T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) && \"expected fixed-length SVE vector!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3355, __PRETTY_FUNCTION__))
3354 T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) &&(((T->getVectorKind() == VectorType::SveFixedLengthDataVector
|| T->getVectorKind() == VectorType::SveFixedLengthPredicateVector
) && "expected fixed-length SVE vector!") ? static_cast
<void> (0) : __assert_fail ("(T->getVectorKind() == VectorType::SveFixedLengthDataVector || T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) && \"expected fixed-length SVE vector!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3355, __PRETTY_FUNCTION__))
3355 "expected fixed-length SVE vector!")(((T->getVectorKind() == VectorType::SveFixedLengthDataVector
|| T->getVectorKind() == VectorType::SveFixedLengthPredicateVector
) && "expected fixed-length SVE vector!") ? static_cast
<void> (0) : __assert_fail ("(T->getVectorKind() == VectorType::SveFixedLengthDataVector || T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) && \"expected fixed-length SVE vector!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3355, __PRETTY_FUNCTION__))
;
3356
3357 QualType EltType = T->getElementType();
3358 assert(EltType->isBuiltinType() &&((EltType->isBuiltinType() && "expected builtin type for fixed-length SVE vector!"
) ? static_cast<void> (0) : __assert_fail ("EltType->isBuiltinType() && \"expected builtin type for fixed-length SVE vector!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3359, __PRETTY_FUNCTION__))
3359 "expected builtin type for fixed-length SVE vector!")((EltType->isBuiltinType() && "expected builtin type for fixed-length SVE vector!"
) ? static_cast<void> (0) : __assert_fail ("EltType->isBuiltinType() && \"expected builtin type for fixed-length SVE vector!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3359, __PRETTY_FUNCTION__))
;
3360
3361 StringRef TypeName;
3362 switch (cast<BuiltinType>(EltType)->getKind()) {
3363 case BuiltinType::SChar:
3364 TypeName = "__SVInt8_t";
3365 break;
3366 case BuiltinType::UChar: {
3367 if (T->getVectorKind() == VectorType::SveFixedLengthDataVector)
3368 TypeName = "__SVUint8_t";
3369 else
3370 TypeName = "__SVBool_t";
3371 break;
3372 }
3373 case BuiltinType::Short:
3374 TypeName = "__SVInt16_t";
3375 break;
3376 case BuiltinType::UShort:
3377 TypeName = "__SVUint16_t";
3378 break;
3379 case BuiltinType::Int:
3380 TypeName = "__SVInt32_t";
3381 break;
3382 case BuiltinType::UInt:
3383 TypeName = "__SVUint32_t";
3384 break;
3385 case BuiltinType::Long:
3386 TypeName = "__SVInt64_t";
3387 break;
3388 case BuiltinType::ULong:
3389 TypeName = "__SVUint64_t";
3390 break;
3391 case BuiltinType::Half:
3392 TypeName = "__SVFloat16_t";
3393 break;
3394 case BuiltinType::Float:
3395 TypeName = "__SVFloat32_t";
3396 break;
3397 case BuiltinType::Double:
3398 TypeName = "__SVFloat64_t";
3399 break;
3400 case BuiltinType::BFloat16:
3401 TypeName = "__SVBfloat16_t";
3402 break;
3403 default:
3404 llvm_unreachable("unexpected element type for fixed-length SVE vector!")::llvm::llvm_unreachable_internal("unexpected element type for fixed-length SVE vector!"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3404)
;
3405 }
3406
3407 unsigned VecSizeInBits = getASTContext().getTypeInfo(T).Width;
3408
3409 if (T->getVectorKind() == VectorType::SveFixedLengthPredicateVector)
3410 VecSizeInBits *= 8;
3411
3412 Out << "9__SVE_VLSI" << 'u' << TypeName.size() << TypeName << "Lj"
3413 << VecSizeInBits << "EE";
3414}
3415
3416void CXXNameMangler::mangleAArch64FixedSveVectorType(
3417 const DependentVectorType *T) {
3418 DiagnosticsEngine &Diags = Context.getDiags();
3419 unsigned DiagID = Diags.getCustomDiagID(
3420 DiagnosticsEngine::Error,
3421 "cannot mangle this dependent fixed-length SVE vector type yet");
3422 Diags.Report(T->getAttributeLoc(), DiagID);
3423}
3424
3425// GNU extension: vector types
3426// <type> ::= <vector-type>
3427// <vector-type> ::= Dv <positive dimension number> _
3428// <extended element type>
3429// ::= Dv [<dimension expression>] _ <element type>
3430// <extended element type> ::= <element type>
3431// ::= p # AltiVec vector pixel
3432// ::= b # Altivec vector bool
3433void CXXNameMangler::mangleType(const VectorType *T) {
3434 if ((T->getVectorKind() == VectorType::NeonVector ||
3435 T->getVectorKind() == VectorType::NeonPolyVector)) {
3436 llvm::Triple Target = getASTContext().getTargetInfo().getTriple();
3437 llvm::Triple::ArchType Arch =
3438 getASTContext().getTargetInfo().getTriple().getArch();
3439 if ((Arch == llvm::Triple::aarch64 ||
3440 Arch == llvm::Triple::aarch64_be) && !Target.isOSDarwin())
3441 mangleAArch64NeonVectorType(T);
3442 else
3443 mangleNeonVectorType(T);
3444 return;
3445 } else if (T->getVectorKind() == VectorType::SveFixedLengthDataVector ||
3446 T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) {
3447 mangleAArch64FixedSveVectorType(T);
3448 return;
3449 }
3450 Out << "Dv" << T->getNumElements() << '_';
3451 if (T->getVectorKind() == VectorType::AltiVecPixel)
3452 Out << 'p';
3453 else if (T->getVectorKind() == VectorType::AltiVecBool)
3454 Out << 'b';
3455 else
3456 mangleType(T->getElementType());
3457}
3458
3459void CXXNameMangler::mangleType(const DependentVectorType *T) {
3460 if ((T->getVectorKind() == VectorType::NeonVector ||
3461 T->getVectorKind() == VectorType::NeonPolyVector)) {
3462 llvm::Triple Target = getASTContext().getTargetInfo().getTriple();
3463 llvm::Triple::ArchType Arch =
3464 getASTContext().getTargetInfo().getTriple().getArch();
3465 if ((Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_be) &&
3466 !Target.isOSDarwin())
3467 mangleAArch64NeonVectorType(T);
3468 else
3469 mangleNeonVectorType(T);
3470 return;
3471 } else if (T->getVectorKind() == VectorType::SveFixedLengthDataVector ||
3472 T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) {
3473 mangleAArch64FixedSveVectorType(T);
3474 return;
3475 }
3476
3477 Out << "Dv";
3478 mangleExpression(T->getSizeExpr());
3479 Out << '_';
3480 if (T->getVectorKind() == VectorType::AltiVecPixel)
3481 Out << 'p';
3482 else if (T->getVectorKind() == VectorType::AltiVecBool)
3483 Out << 'b';
3484 else
3485 mangleType(T->getElementType());
3486}
3487
3488void CXXNameMangler::mangleType(const ExtVectorType *T) {
3489 mangleType(static_cast<const VectorType*>(T));
3490}
3491void CXXNameMangler::mangleType(const DependentSizedExtVectorType *T) {
3492 Out << "Dv";
3493 mangleExpression(T->getSizeExpr());
3494 Out << '_';
3495 mangleType(T->getElementType());
3496}
3497
3498void CXXNameMangler::mangleType(const ConstantMatrixType *T) {
3499 // Mangle matrix types using a vendor extended type qualifier:
3500 // U<Len>matrix_type<Rows><Columns><element type>
3501 StringRef VendorQualifier = "matrix_type";
3502 Out << "U" << VendorQualifier.size() << VendorQualifier;
3503 auto &ASTCtx = getASTContext();
3504 unsigned BitWidth = ASTCtx.getTypeSize(ASTCtx.getSizeType());
3505 llvm::APSInt Rows(BitWidth);
3506 Rows = T->getNumRows();
3507 mangleIntegerLiteral(ASTCtx.getSizeType(), Rows);
3508 llvm::APSInt Columns(BitWidth);
3509 Columns = T->getNumColumns();
3510 mangleIntegerLiteral(ASTCtx.getSizeType(), Columns);
3511 mangleType(T->getElementType());
3512}
3513
3514void CXXNameMangler::mangleType(const DependentSizedMatrixType *T) {
3515 // U<Len>matrix_type<row expr><column expr><element type>
3516 StringRef VendorQualifier = "matrix_type";
3517 Out << "U" << VendorQualifier.size() << VendorQualifier;
3518 mangleTemplateArg(T->getRowExpr());
3519 mangleTemplateArg(T->getColumnExpr());
3520 mangleType(T->getElementType());
3521}
3522
3523void CXXNameMangler::mangleType(const DependentAddressSpaceType *T) {
3524 SplitQualType split = T->getPointeeType().split();
3525 mangleQualifiers(split.Quals, T);
3526 mangleType(QualType(split.Ty, 0));
3527}
3528
3529void CXXNameMangler::mangleType(const PackExpansionType *T) {
3530 // <type> ::= Dp <type> # pack expansion (C++0x)
3531 Out << "Dp";
3532 mangleType(T->getPattern());
3533}
3534
3535void CXXNameMangler::mangleType(const ObjCInterfaceType *T) {
3536 mangleSourceName(T->getDecl()->getIdentifier());
3537}
3538
3539void CXXNameMangler::mangleType(const ObjCObjectType *T) {
3540 // Treat __kindof as a vendor extended type qualifier.
3541 if (T->isKindOfType())
3542 Out << "U8__kindof";
3543
3544 if (!T->qual_empty()) {
3545 // Mangle protocol qualifiers.
3546 SmallString<64> QualStr;
3547 llvm::raw_svector_ostream QualOS(QualStr);
3548 QualOS << "objcproto";
3549 for (const auto *I : T->quals()) {
3550 StringRef name = I->getName();
3551 QualOS << name.size() << name;
3552 }
3553 Out << 'U' << QualStr.size() << QualStr;
3554 }
3555
3556 mangleType(T->getBaseType());
3557
3558 if (T->isSpecialized()) {
3559 // Mangle type arguments as I <type>+ E
3560 Out << 'I';
3561 for (auto typeArg : T->getTypeArgs())
3562 mangleType(typeArg);
3563 Out << 'E';
3564 }
3565}
3566
3567void CXXNameMangler::mangleType(const BlockPointerType *T) {
3568 Out << "U13block_pointer";
3569 mangleType(T->getPointeeType());
3570}
3571
3572void CXXNameMangler::mangleType(const InjectedClassNameType *T) {
3573 // Mangle injected class name types as if the user had written the
3574 // specialization out fully. It may not actually be possible to see
3575 // this mangling, though.
3576 mangleType(T->getInjectedSpecializationType());
3577}
3578
3579void CXXNameMangler::mangleType(const TemplateSpecializationType *T) {
3580 if (TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl()) {
3581 mangleTemplateName(TD, T->getArgs(), T->getNumArgs());
3582 } else {
3583 if (mangleSubstitution(QualType(T, 0)))
3584 return;
3585
3586 mangleTemplatePrefix(T->getTemplateName());
3587
3588 // FIXME: GCC does not appear to mangle the template arguments when
3589 // the template in question is a dependent template name. Should we
3590 // emulate that badness?
3591 mangleTemplateArgs(T->getArgs(), T->getNumArgs());
3592 addSubstitution(QualType(T, 0));
3593 }
3594}
3595
3596void CXXNameMangler::mangleType(const DependentNameType *T) {
3597 // Proposal by cxx-abi-dev, 2014-03-26
3598 // <class-enum-type> ::= <name> # non-dependent or dependent type name or
3599 // # dependent elaborated type specifier using
3600 // # 'typename'
3601 // ::= Ts <name> # dependent elaborated type specifier using
3602 // # 'struct' or 'class'
3603 // ::= Tu <name> # dependent elaborated type specifier using
3604 // # 'union'
3605 // ::= Te <name> # dependent elaborated type specifier using
3606 // # 'enum'
3607 switch (T->getKeyword()) {
3608 case ETK_None:
3609 case ETK_Typename:
3610 break;
3611 case ETK_Struct:
3612 case ETK_Class:
3613 case ETK_Interface:
3614 Out << "Ts";
3615 break;
3616 case ETK_Union:
3617 Out << "Tu";
3618 break;
3619 case ETK_Enum:
3620 Out << "Te";
3621 break;
3622 }
3623 // Typename types are always nested
3624 Out << 'N';
3625 manglePrefix(T->getQualifier());
3626 mangleSourceName(T->getIdentifier());
3627 Out << 'E';
3628}
3629
3630void CXXNameMangler::mangleType(const DependentTemplateSpecializationType *T) {
3631 // Dependently-scoped template types are nested if they have a prefix.
3632 Out << 'N';
3633
3634 // TODO: avoid making this TemplateName.
3635 TemplateName Prefix =
3636 getASTContext().getDependentTemplateName(T->getQualifier(),
3637 T->getIdentifier());
3638 mangleTemplatePrefix(Prefix);
3639
3640 // FIXME: GCC does not appear to mangle the template arguments when
3641 // the template in question is a dependent template name. Should we
3642 // emulate that badness?
3643 mangleTemplateArgs(T->getArgs(), T->getNumArgs());
3644 Out << 'E';
3645}
3646
3647void CXXNameMangler::mangleType(const TypeOfType *T) {
3648 // FIXME: this is pretty unsatisfactory, but there isn't an obvious
3649 // "extension with parameters" mangling.
3650 Out << "u6typeof";
3651}
3652
3653void CXXNameMangler::mangleType(const TypeOfExprType *T) {
3654 // FIXME: this is pretty unsatisfactory, but there isn't an obvious
3655 // "extension with parameters" mangling.
3656 Out << "u6typeof";
3657}
3658
3659void CXXNameMangler::mangleType(const DecltypeType *T) {
3660 Expr *E = T->getUnderlyingExpr();
3661
3662 // type ::= Dt <expression> E # decltype of an id-expression
3663 // # or class member access
3664 // ::= DT <expression> E # decltype of an expression
3665
3666 // This purports to be an exhaustive list of id-expressions and
3667 // class member accesses. Note that we do not ignore parentheses;
3668 // parentheses change the semantics of decltype for these
3669 // expressions (and cause the mangler to use the other form).
3670 if (isa<DeclRefExpr>(E) ||
3671 isa<MemberExpr>(E) ||
3672 isa<UnresolvedLookupExpr>(E) ||
3673 isa<DependentScopeDeclRefExpr>(E) ||
3674 isa<CXXDependentScopeMemberExpr>(E) ||
3675 isa<UnresolvedMemberExpr>(E))
3676 Out << "Dt";
3677 else
3678 Out << "DT";
3679 mangleExpression(E);
3680 Out << 'E';
3681}
3682
3683void CXXNameMangler::mangleType(const UnaryTransformType *T) {
3684 // If this is dependent, we need to record that. If not, we simply
3685 // mangle it as the underlying type since they are equivalent.
3686 if (T->isDependentType()) {
3687 Out << 'U';
3688
3689 switch (T->getUTTKind()) {
3690 case UnaryTransformType::EnumUnderlyingType:
3691 Out << "3eut";
3692 break;
3693 }
3694 }
3695
3696 mangleType(T->getBaseType());
3697}
3698
3699void CXXNameMangler::mangleType(const AutoType *T) {
3700 assert(T->getDeducedType().isNull() &&((T->getDeducedType().isNull() && "Deduced AutoType shouldn't be handled here!"
) ? static_cast<void> (0) : __assert_fail ("T->getDeducedType().isNull() && \"Deduced AutoType shouldn't be handled here!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3701, __PRETTY_FUNCTION__))
3701 "Deduced AutoType shouldn't be handled here!")((T->getDeducedType().isNull() && "Deduced AutoType shouldn't be handled here!"
) ? static_cast<void> (0) : __assert_fail ("T->getDeducedType().isNull() && \"Deduced AutoType shouldn't be handled here!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3701, __PRETTY_FUNCTION__))
;
3702 assert(T->getKeyword() != AutoTypeKeyword::GNUAutoType &&((T->getKeyword() != AutoTypeKeyword::GNUAutoType &&
"shouldn't need to mangle __auto_type!") ? static_cast<void
> (0) : __assert_fail ("T->getKeyword() != AutoTypeKeyword::GNUAutoType && \"shouldn't need to mangle __auto_type!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3703, __PRETTY_FUNCTION__))
3703 "shouldn't need to mangle __auto_type!")((T->getKeyword() != AutoTypeKeyword::GNUAutoType &&
"shouldn't need to mangle __auto_type!") ? static_cast<void
> (0) : __assert_fail ("T->getKeyword() != AutoTypeKeyword::GNUAutoType && \"shouldn't need to mangle __auto_type!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3703, __PRETTY_FUNCTION__))
;
3704 // <builtin-type> ::= Da # auto
3705 // ::= Dc # decltype(auto)
3706 Out << (T->isDecltypeAuto() ? "Dc" : "Da");
3707}
3708
3709void CXXNameMangler::mangleType(const DeducedTemplateSpecializationType *T) {
3710 // FIXME: This is not the right mangling. We also need to include a scope
3711 // here in some cases.
3712 QualType D = T->getDeducedType();
3713 if (D.isNull())
3714 mangleUnscopedTemplateName(T->getTemplateName(), nullptr);
3715 else
3716 mangleType(D);
3717}
3718
3719void CXXNameMangler::mangleType(const AtomicType *T) {
3720 // <type> ::= U <source-name> <type> # vendor extended type qualifier
3721 // (Until there's a standardized mangling...)
3722 Out << "U7_Atomic";
3723 mangleType(T->getValueType());
3724}
3725
3726void CXXNameMangler::mangleType(const PipeType *T) {
3727 // Pipe type mangling rules are described in SPIR 2.0 specification
3728 // A.1 Data types and A.3 Summary of changes
3729 // <type> ::= 8ocl_pipe
3730 Out << "8ocl_pipe";
3731}
3732
3733void CXXNameMangler::mangleType(const ExtIntType *T) {
3734 Out << "U7_ExtInt";
3735 llvm::APSInt BW(32, true);
3736 BW = T->getNumBits();
3737 TemplateArgument TA(Context.getASTContext(), BW, getASTContext().IntTy);
3738 mangleTemplateArgs(&TA, 1);
3739 if (T->isUnsigned())
3740 Out << "j";
3741 else
3742 Out << "i";
3743}
3744
3745void CXXNameMangler::mangleType(const DependentExtIntType *T) {
3746 Out << "U7_ExtInt";
3747 TemplateArgument TA(T->getNumBitsExpr());
3748 mangleTemplateArgs(&TA, 1);
3749 if (T->isUnsigned())
3750 Out << "j";
3751 else
3752 Out << "i";
3753}
3754
3755void CXXNameMangler::mangleIntegerLiteral(QualType T,
3756 const llvm::APSInt &Value) {
3757 // <expr-primary> ::= L <type> <value number> E # integer literal
3758 Out << 'L';
3759
3760 mangleType(T);
3761 if (T->isBooleanType()) {
3762 // Boolean values are encoded as 0/1.
3763 Out << (Value.getBoolValue() ? '1' : '0');
3764 } else {
3765 mangleNumber(Value);
3766 }
3767 Out << 'E';
3768
3769}
3770
3771void CXXNameMangler::mangleMemberExprBase(const Expr *Base, bool IsArrow) {
3772 // Ignore member expressions involving anonymous unions.
3773 while (const auto *RT = Base->getType()->getAs<RecordType>()) {
3774 if (!RT->getDecl()->isAnonymousStructOrUnion())
3775 break;
3776 const auto *ME = dyn_cast<MemberExpr>(Base);
3777 if (!ME)
3778 break;
3779 Base = ME->getBase();
3780 IsArrow = ME->isArrow();
3781 }
3782
3783 if (Base->isImplicitCXXThis()) {
3784 // Note: GCC mangles member expressions to the implicit 'this' as
3785 // *this., whereas we represent them as this->. The Itanium C++ ABI
3786 // does not specify anything here, so we follow GCC.
3787 Out << "dtdefpT";
3788 } else {
3789 Out << (IsArrow ? "pt" : "dt");
3790 mangleExpression(Base);
3791 }
3792}
3793
3794/// Mangles a member expression.
3795void CXXNameMangler::mangleMemberExpr(const Expr *base,
3796 bool isArrow,
3797 NestedNameSpecifier *qualifier,
3798 NamedDecl *firstQualifierLookup,
3799 DeclarationName member,
3800 const TemplateArgumentLoc *TemplateArgs,
3801 unsigned NumTemplateArgs,
3802 unsigned arity) {
3803 // <expression> ::= dt <expression> <unresolved-name>
3804 // ::= pt <expression> <unresolved-name>
3805 if (base)
3806 mangleMemberExprBase(base, isArrow);
3807 mangleUnresolvedName(qualifier, member, TemplateArgs, NumTemplateArgs, arity);
3808}
3809
3810/// Look at the callee of the given call expression and determine if
3811/// it's a parenthesized id-expression which would have triggered ADL
3812/// otherwise.
3813static bool isParenthesizedADLCallee(const CallExpr *call) {
3814 const Expr *callee = call->getCallee();
3815 const Expr *fn = callee->IgnoreParens();
3816
3817 // Must be parenthesized. IgnoreParens() skips __extension__ nodes,
3818 // too, but for those to appear in the callee, it would have to be
3819 // parenthesized.
3820 if (callee == fn) return false;
3821
3822 // Must be an unresolved lookup.
3823 const UnresolvedLookupExpr *lookup = dyn_cast<UnresolvedLookupExpr>(fn);
3824 if (!lookup) return false;
3825
3826 assert(!lookup->requiresADL())((!lookup->requiresADL()) ? static_cast<void> (0) : __assert_fail
("!lookup->requiresADL()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3826, __PRETTY_FUNCTION__))
;
3827
3828 // Must be an unqualified lookup.
3829 if (lookup->getQualifier()) return false;
3830
3831 // Must not have found a class member. Note that if one is a class
3832 // member, they're all class members.
3833 if (lookup->getNumDecls() > 0 &&
3834 (*lookup->decls_begin())->isCXXClassMember())
3835 return false;
3836
3837 // Otherwise, ADL would have been triggered.
3838 return true;
3839}
3840
3841void CXXNameMangler::mangleCastExpression(const Expr *E, StringRef CastEncoding) {
3842 const ExplicitCastExpr *ECE = cast<ExplicitCastExpr>(E);
3843 Out << CastEncoding;
3844 mangleType(ECE->getType());
3845 mangleExpression(ECE->getSubExpr());
3846}
3847
3848void CXXNameMangler::mangleInitListElements(const InitListExpr *InitList) {
3849 if (auto *Syntactic = InitList->getSyntacticForm())
3850 InitList = Syntactic;
3851 for (unsigned i = 0, e = InitList->getNumInits(); i != e; ++i)
3852 mangleExpression(InitList->getInit(i));
3853}
3854
3855void CXXNameMangler::mangleDeclRefExpr(const NamedDecl *D) {
3856 switch (D->getKind()) {
3857 default:
3858 // <expr-primary> ::= L <mangled-name> E # external name
3859 Out << 'L';
3860 mangle(D);
3861 Out << 'E';
3862 break;
3863
3864 case Decl::ParmVar:
3865 mangleFunctionParam(cast<ParmVarDecl>(D));
3866 break;
3867
3868 case Decl::EnumConstant: {
3869 const EnumConstantDecl *ED = cast<EnumConstantDecl>(D);
3870 mangleIntegerLiteral(ED->getType(), ED->getInitVal());
3871 break;
3872 }
3873
3874 case Decl::NonTypeTemplateParm:
3875 const NonTypeTemplateParmDecl *PD = cast<NonTypeTemplateParmDecl>(D);
3876 mangleTemplateParameter(PD->getDepth(), PD->getIndex());
3877 break;
3878 }
3879}
3880
3881void CXXNameMangler::mangleExpression(const Expr *E, unsigned Arity) {
3882 // <expression> ::= <unary operator-name> <expression>
3883 // ::= <binary operator-name> <expression> <expression>
3884 // ::= <trinary operator-name> <expression> <expression> <expression>
3885 // ::= cv <type> expression # conversion with one argument
3886 // ::= cv <type> _ <expression>* E # conversion with a different number of arguments
3887 // ::= dc <type> <expression> # dynamic_cast<type> (expression)
3888 // ::= sc <type> <expression> # static_cast<type> (expression)
3889 // ::= cc <type> <expression> # const_cast<type> (expression)
3890 // ::= rc <type> <expression> # reinterpret_cast<type> (expression)
3891 // ::= st <type> # sizeof (a type)
3892 // ::= at <type> # alignof (a type)
3893 // ::= <template-param>
3894 // ::= <function-param>
3895 // ::= sr <type> <unqualified-name> # dependent name
3896 // ::= sr <type> <unqualified-name> <template-args> # dependent template-id
3897 // ::= ds <expression> <expression> # expr.*expr
3898 // ::= sZ <template-param> # size of a parameter pack
3899 // ::= sZ <function-param> # size of a function parameter pack
3900 // ::= <expr-primary>
3901 // <expr-primary> ::= L <type> <value number> E # integer literal
3902 // ::= L <type <value float> E # floating literal
3903 // ::= L <mangled-name> E # external name
3904 // ::= fpT # 'this' expression
3905 QualType ImplicitlyConvertedToType;
3906
3907recurse:
3908 switch (E->getStmtClass()) {
3909 case Expr::NoStmtClass:
3910#define ABSTRACT_STMT(Type)
3911#define EXPR(Type, Base)
3912#define STMT(Type, Base) \
3913 case Expr::Type##Class:
3914#include "clang/AST/StmtNodes.inc"
3915 // fallthrough
3916
3917 // These all can only appear in local or variable-initialization
3918 // contexts and so should never appear in a mangling.
3919 case Expr::AddrLabelExprClass:
3920 case Expr::DesignatedInitUpdateExprClass:
3921 case Expr::ImplicitValueInitExprClass:
3922 case Expr::ArrayInitLoopExprClass:
3923 case Expr::ArrayInitIndexExprClass:
3924 case Expr::NoInitExprClass:
3925 case Expr::ParenListExprClass:
3926 case Expr::LambdaExprClass:
3927 case Expr::MSPropertyRefExprClass:
3928 case Expr::MSPropertySubscriptExprClass:
3929 case Expr::TypoExprClass: // This should no longer exist in the AST by now.
3930 case Expr::RecoveryExprClass:
3931 case Expr::OMPArraySectionExprClass:
3932 case Expr::OMPArrayShapingExprClass:
3933 case Expr::OMPIteratorExprClass:
3934 case Expr::CXXInheritedCtorInitExprClass:
3935 llvm_unreachable("unexpected statement kind")::llvm::llvm_unreachable_internal("unexpected statement kind"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 3935)
;
3936
3937 case Expr::ConstantExprClass:
3938 E = cast<ConstantExpr>(E)->getSubExpr();
3939 goto recurse;
3940
3941 // FIXME: invent manglings for all these.
3942 case Expr::BlockExprClass:
3943 case Expr::ChooseExprClass:
3944 case Expr::CompoundLiteralExprClass:
3945 case Expr::ExtVectorElementExprClass:
3946 case Expr::GenericSelectionExprClass:
3947 case Expr::ObjCEncodeExprClass:
3948 case Expr::ObjCIsaExprClass:
3949 case Expr::ObjCIvarRefExprClass:
3950 case Expr::ObjCMessageExprClass:
3951 case Expr::ObjCPropertyRefExprClass:
3952 case Expr::ObjCProtocolExprClass:
3953 case Expr::ObjCSelectorExprClass:
3954 case Expr::ObjCStringLiteralClass:
3955 case Expr::ObjCBoxedExprClass:
3956 case Expr::ObjCArrayLiteralClass:
3957 case Expr::ObjCDictionaryLiteralClass:
3958 case Expr::ObjCSubscriptRefExprClass:
3959 case Expr::ObjCIndirectCopyRestoreExprClass:
3960 case Expr::ObjCAvailabilityCheckExprClass:
3961 case Expr::OffsetOfExprClass:
3962 case Expr::PredefinedExprClass:
3963 case Expr::ShuffleVectorExprClass:
3964 case Expr::ConvertVectorExprClass:
3965 case Expr::StmtExprClass:
3966 case Expr::TypeTraitExprClass:
3967 case Expr::RequiresExprClass:
3968 case Expr::ArrayTypeTraitExprClass:
3969 case Expr::ExpressionTraitExprClass:
3970 case Expr::VAArgExprClass:
3971 case Expr::CUDAKernelCallExprClass:
3972 case Expr::AsTypeExprClass:
3973 case Expr::PseudoObjectExprClass:
3974 case Expr::AtomicExprClass:
3975 case Expr::SourceLocExprClass:
3976 case Expr::FixedPointLiteralClass:
3977 case Expr::BuiltinBitCastExprClass:
3978 {
3979 if (!NullOut) {
3980 // As bad as this diagnostic is, it's better than crashing.
3981 DiagnosticsEngine &Diags = Context.getDiags();
3982 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
3983 "cannot yet mangle expression type %0");
3984 Diags.Report(E->getExprLoc(), DiagID)
3985 << E->getStmtClassName() << E->getSourceRange();
3986 }
3987 break;
3988 }
3989
3990 case Expr::CXXUuidofExprClass: {
3991 const CXXUuidofExpr *UE = cast<CXXUuidofExpr>(E);
3992 if (UE->isTypeOperand()) {
3993 QualType UuidT = UE->getTypeOperand(Context.getASTContext());
3994 Out << "u8__uuidoft";
3995 mangleType(UuidT);
3996 } else {
3997 Expr *UuidExp = UE->getExprOperand();
3998 Out << "u8__uuidofz";
3999 mangleExpression(UuidExp, Arity);
4000 }
4001 break;
4002 }
4003
4004 // Even gcc-4.5 doesn't mangle this.
4005 case Expr::BinaryConditionalOperatorClass: {
4006 DiagnosticsEngine &Diags = Context.getDiags();
4007 unsigned DiagID =
4008 Diags.getCustomDiagID(DiagnosticsEngine::Error,
4009 "?: operator with omitted middle operand cannot be mangled");
4010 Diags.Report(E->getExprLoc(), DiagID)
4011 << E->getStmtClassName() << E->getSourceRange();
4012 break;
4013 }
4014
4015 // These are used for internal purposes and cannot be meaningfully mangled.
4016 case Expr::OpaqueValueExprClass:
4017 llvm_unreachable("cannot mangle opaque value; mangling wrong thing?")::llvm::llvm_unreachable_internal("cannot mangle opaque value; mangling wrong thing?"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4017)
;
4018
4019 case Expr::InitListExprClass: {
4020 Out << "il";
4021 mangleInitListElements(cast<InitListExpr>(E));
4022 Out << "E";
4023 break;
4024 }
4025
4026 case Expr::DesignatedInitExprClass: {
4027 auto *DIE = cast<DesignatedInitExpr>(E);
4028 for (const auto &Designator : DIE->designators()) {
4029 if (Designator.isFieldDesignator()) {
4030 Out << "di";
4031 mangleSourceName(Designator.getFieldName());
4032 } else if (Designator.isArrayDesignator()) {
4033 Out << "dx";
4034 mangleExpression(DIE->getArrayIndex(Designator));
4035 } else {
4036 assert(Designator.isArrayRangeDesignator() &&((Designator.isArrayRangeDesignator() && "unknown designator kind"
) ? static_cast<void> (0) : __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4037, __PRETTY_FUNCTION__))
4037 "unknown designator kind")((Designator.isArrayRangeDesignator() && "unknown designator kind"
) ? static_cast<void> (0) : __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4037, __PRETTY_FUNCTION__))
;
4038 Out << "dX";
4039 mangleExpression(DIE->getArrayRangeStart(Designator));
4040 mangleExpression(DIE->getArrayRangeEnd(Designator));
4041 }
4042 }
4043 mangleExpression(DIE->getInit());
4044 break;
4045 }
4046
4047 case Expr::CXXDefaultArgExprClass:
4048 mangleExpression(cast<CXXDefaultArgExpr>(E)->getExpr(), Arity);
4049 break;
4050
4051 case Expr::CXXDefaultInitExprClass:
4052 mangleExpression(cast<CXXDefaultInitExpr>(E)->getExpr(), Arity);
4053 break;
4054
4055 case Expr::CXXStdInitializerListExprClass:
4056 mangleExpression(cast<CXXStdInitializerListExpr>(E)->getSubExpr(), Arity);
4057 break;
4058
4059 case Expr::SubstNonTypeTemplateParmExprClass:
4060 mangleExpression(cast<SubstNonTypeTemplateParmExpr>(E)->getReplacement(),
4061 Arity);
4062 break;
4063
4064 case Expr::UserDefinedLiteralClass:
4065 // We follow g++'s approach of mangling a UDL as a call to the literal
4066 // operator.
4067 case Expr::CXXMemberCallExprClass: // fallthrough
4068 case Expr::CallExprClass: {
4069 const CallExpr *CE = cast<CallExpr>(E);
4070
4071 // <expression> ::= cp <simple-id> <expression>* E
4072 // We use this mangling only when the call would use ADL except
4073 // for being parenthesized. Per discussion with David
4074 // Vandervoorde, 2011.04.25.
4075 if (isParenthesizedADLCallee(CE)) {
4076 Out << "cp";
4077 // The callee here is a parenthesized UnresolvedLookupExpr with
4078 // no qualifier and should always get mangled as a <simple-id>
4079 // anyway.
4080
4081 // <expression> ::= cl <expression>* E
4082 } else {
4083 Out << "cl";
4084 }
4085
4086 unsigned CallArity = CE->getNumArgs();
4087 for (const Expr *Arg : CE->arguments())
4088 if (isa<PackExpansionExpr>(Arg))
4089 CallArity = UnknownArity;
4090
4091 mangleExpression(CE->getCallee(), CallArity);
4092 for (const Expr *Arg : CE->arguments())
4093 mangleExpression(Arg);
4094 Out << 'E';
4095 break;
4096 }
4097
4098 case Expr::CXXNewExprClass: {
4099 const CXXNewExpr *New = cast<CXXNewExpr>(E);
4100 if (New->isGlobalNew()) Out << "gs";
4101 Out << (New->isArray() ? "na" : "nw");
4102 for (CXXNewExpr::const_arg_iterator I = New->placement_arg_begin(),
4103 E = New->placement_arg_end(); I != E; ++I)
4104 mangleExpression(*I);
4105 Out << '_';
4106 mangleType(New->getAllocatedType());
4107 if (New->hasInitializer()) {
4108 if (New->getInitializationStyle() == CXXNewExpr::ListInit)
4109 Out << "il";
4110 else
4111 Out << "pi";
4112 const Expr *Init = New->getInitializer();
4113 if (const CXXConstructExpr *CCE = dyn_cast<CXXConstructExpr>(Init)) {
4114 // Directly inline the initializers.
4115 for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(),
4116 E = CCE->arg_end();
4117 I != E; ++I)
4118 mangleExpression(*I);
4119 } else if (const ParenListExpr *PLE = dyn_cast<ParenListExpr>(Init)) {
4120 for (unsigned i = 0, e = PLE->getNumExprs(); i != e; ++i)
4121 mangleExpression(PLE->getExpr(i));
4122 } else if (New->getInitializationStyle() == CXXNewExpr::ListInit &&
4123 isa<InitListExpr>(Init)) {
4124 // Only take InitListExprs apart for list-initialization.
4125 mangleInitListElements(cast<InitListExpr>(Init));
4126 } else
4127 mangleExpression(Init);
4128 }
4129 Out << 'E';
4130 break;
4131 }
4132
4133 case Expr::CXXPseudoDestructorExprClass: {
4134 const auto *PDE = cast<CXXPseudoDestructorExpr>(E);
4135 if (const Expr *Base = PDE->getBase())
4136 mangleMemberExprBase(Base, PDE->isArrow());
4137 NestedNameSpecifier *Qualifier = PDE->getQualifier();
4138 if (TypeSourceInfo *ScopeInfo = PDE->getScopeTypeInfo()) {
4139 if (Qualifier) {
4140 mangleUnresolvedPrefix(Qualifier,
4141 /*recursive=*/true);
4142 mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType());
4143 Out << 'E';
4144 } else {
4145 Out << "sr";
4146 if (!mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType()))
4147 Out << 'E';
4148 }
4149 } else if (Qualifier) {
4150 mangleUnresolvedPrefix(Qualifier);
4151 }
4152 // <base-unresolved-name> ::= dn <destructor-name>
4153 Out << "dn";
4154 QualType DestroyedType = PDE->getDestroyedType();
4155 mangleUnresolvedTypeOrSimpleId(DestroyedType);
4156 break;
4157 }
4158
4159 case Expr::MemberExprClass: {
4160 const MemberExpr *ME = cast<MemberExpr>(E);
4161 mangleMemberExpr(ME->getBase(), ME->isArrow(),
4162 ME->getQualifier(), nullptr,
4163 ME->getMemberDecl()->getDeclName(),
4164 ME->getTemplateArgs(), ME->getNumTemplateArgs(),
4165 Arity);
4166 break;
4167 }
4168
4169 case Expr::UnresolvedMemberExprClass: {
4170 const UnresolvedMemberExpr *ME = cast<UnresolvedMemberExpr>(E);
4171 mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(),
4172 ME->isArrow(), ME->getQualifier(), nullptr,
4173 ME->getMemberName(),
4174 ME->getTemplateArgs(), ME->getNumTemplateArgs(),
4175 Arity);
4176 break;
4177 }
4178
4179 case Expr::CXXDependentScopeMemberExprClass: {
4180 const CXXDependentScopeMemberExpr *ME
4181 = cast<CXXDependentScopeMemberExpr>(E);
4182 mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(),
4183 ME->isArrow(), ME->getQualifier(),
4184 ME->getFirstQualifierFoundInScope(),
4185 ME->getMember(),
4186 ME->getTemplateArgs(), ME->getNumTemplateArgs(),
4187 Arity);
4188 break;
4189 }
4190
4191 case Expr::UnresolvedLookupExprClass: {
4192 const UnresolvedLookupExpr *ULE = cast<UnresolvedLookupExpr>(E);
4193 mangleUnresolvedName(ULE->getQualifier(), ULE->getName(),
4194 ULE->getTemplateArgs(), ULE->getNumTemplateArgs(),
4195 Arity);
4196 break;
4197 }
4198
4199 case Expr::CXXUnresolvedConstructExprClass: {
4200 const CXXUnresolvedConstructExpr *CE = cast<CXXUnresolvedConstructExpr>(E);
4201 unsigned N = CE->arg_size();
4202
4203 if (CE->isListInitialization()) {
4204 assert(N == 1 && "unexpected form for list initialization")((N == 1 && "unexpected form for list initialization"
) ? static_cast<void> (0) : __assert_fail ("N == 1 && \"unexpected form for list initialization\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4204, __PRETTY_FUNCTION__))
;
4205 auto *IL = cast<InitListExpr>(CE->getArg(0));
4206 Out << "tl";
4207 mangleType(CE->getType());
4208 mangleInitListElements(IL);
4209 Out << "E";
4210 return;
4211 }
4212
4213 Out << "cv";
4214 mangleType(CE->getType());
4215 if (N != 1) Out << '_';
4216 for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I));
4217 if (N != 1) Out << 'E';
4218 break;
4219 }
4220
4221 case Expr::CXXConstructExprClass: {
4222 const auto *CE = cast<CXXConstructExpr>(E);
4223 if (!CE->isListInitialization() || CE->isStdInitListInitialization()) {
4224 assert(((CE->getNumArgs() >= 1 && (CE->getNumArgs()
== 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) &&
"implicit CXXConstructExpr must have one argument") ? static_cast
<void> (0) : __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4227, __PRETTY_FUNCTION__))
4225 CE->getNumArgs() >= 1 &&((CE->getNumArgs() >= 1 && (CE->getNumArgs()
== 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) &&
"implicit CXXConstructExpr must have one argument") ? static_cast
<void> (0) : __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4227, __PRETTY_FUNCTION__))
4226 (CE->getNumArgs() == 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) &&((CE->getNumArgs() >= 1 && (CE->getNumArgs()
== 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) &&
"implicit CXXConstructExpr must have one argument") ? static_cast
<void> (0) : __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4227, __PRETTY_FUNCTION__))
4227 "implicit CXXConstructExpr must have one argument")((CE->getNumArgs() >= 1 && (CE->getNumArgs()
== 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) &&
"implicit CXXConstructExpr must have one argument") ? static_cast
<void> (0) : __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 || isa<CXXDefaultArgExpr>(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4227, __PRETTY_FUNCTION__))
;
4228 return mangleExpression(cast<CXXConstructExpr>(E)->getArg(0));
4229 }
4230 Out << "il";
4231 for (auto *E : CE->arguments())
4232 mangleExpression(E);
4233 Out << "E";
4234 break;
4235 }
4236
4237 case Expr::CXXTemporaryObjectExprClass: {
4238 const auto *CE = cast<CXXTemporaryObjectExpr>(E);
4239 unsigned N = CE->getNumArgs();
4240 bool List = CE->isListInitialization();
4241
4242 if (List)
4243 Out << "tl";
4244 else
4245 Out << "cv";
4246 mangleType(CE->getType());
4247 if (!List && N != 1)
4248 Out << '_';
4249 if (CE->isStdInitListInitialization()) {
4250 // We implicitly created a std::initializer_list<T> for the first argument
4251 // of a constructor of type U in an expression of the form U{a, b, c}.
4252 // Strip all the semantic gunk off the initializer list.
4253 auto *SILE =
4254 cast<CXXStdInitializerListExpr>(CE->getArg(0)->IgnoreImplicit());
4255 auto *ILE = cast<InitListExpr>(SILE->getSubExpr()->IgnoreImplicit());
4256 mangleInitListElements(ILE);
4257 } else {
4258 for (auto *E : CE->arguments())
4259 mangleExpression(E);
4260 }
4261 if (List || N != 1)
4262 Out << 'E';
4263 break;
4264 }
4265
4266 case Expr::CXXScalarValueInitExprClass:
4267 Out << "cv";
4268 mangleType(E->getType());
4269 Out << "_E";
4270 break;
4271
4272 case Expr::CXXNoexceptExprClass:
4273 Out << "nx";
4274 mangleExpression(cast<CXXNoexceptExpr>(E)->getOperand());
4275 break;
4276
4277 case Expr::UnaryExprOrTypeTraitExprClass: {
4278 const UnaryExprOrTypeTraitExpr *SAE = cast<UnaryExprOrTypeTraitExpr>(E);
4279
4280 if (!SAE->isInstantiationDependent()) {
4281 // Itanium C++ ABI:
4282 // If the operand of a sizeof or alignof operator is not
4283 // instantiation-dependent it is encoded as an integer literal
4284 // reflecting the result of the operator.
4285 //
4286 // If the result of the operator is implicitly converted to a known
4287 // integer type, that type is used for the literal; otherwise, the type
4288 // of std::size_t or std::ptrdiff_t is used.
4289 QualType T = (ImplicitlyConvertedToType.isNull() ||
4290 !ImplicitlyConvertedToType->isIntegerType())? SAE->getType()
4291 : ImplicitlyConvertedToType;
4292 llvm::APSInt V = SAE->EvaluateKnownConstInt(Context.getASTContext());
4293 mangleIntegerLiteral(T, V);
4294 break;
4295 }
4296
4297 switch(SAE->getKind()) {
4298 case UETT_SizeOf:
4299 Out << 's';
4300 break;
4301 case UETT_PreferredAlignOf:
4302 case UETT_AlignOf:
4303 Out << 'a';
4304 break;
4305 case UETT_VecStep: {
4306 DiagnosticsEngine &Diags = Context.getDiags();
4307 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
4308 "cannot yet mangle vec_step expression");
4309 Diags.Report(DiagID);
4310 return;
4311 }
4312 case UETT_OpenMPRequiredSimdAlign: {
4313 DiagnosticsEngine &Diags = Context.getDiags();
4314 unsigned DiagID = Diags.getCustomDiagID(
4315 DiagnosticsEngine::Error,
4316 "cannot yet mangle __builtin_omp_required_simd_align expression");
4317 Diags.Report(DiagID);
4318 return;
4319 }
4320 }
4321 if (SAE->isArgumentType()) {
4322 Out << 't';
4323 mangleType(SAE->getArgumentType());
4324 } else {
4325 Out << 'z';
4326 mangleExpression(SAE->getArgumentExpr());
4327 }
4328 break;
4329 }
4330
4331 case Expr::CXXThrowExprClass: {
4332 const CXXThrowExpr *TE = cast<CXXThrowExpr>(E);
4333 // <expression> ::= tw <expression> # throw expression
4334 // ::= tr # rethrow
4335 if (TE->getSubExpr()) {
4336 Out << "tw";
4337 mangleExpression(TE->getSubExpr());
4338 } else {
4339 Out << "tr";
4340 }
4341 break;
4342 }
4343
4344 case Expr::CXXTypeidExprClass: {
4345 const CXXTypeidExpr *TIE = cast<CXXTypeidExpr>(E);
4346 // <expression> ::= ti <type> # typeid (type)
4347 // ::= te <expression> # typeid (expression)
4348 if (TIE->isTypeOperand()) {
4349 Out << "ti";
4350 mangleType(TIE->getTypeOperand(Context.getASTContext()));
4351 } else {
4352 Out << "te";
4353 mangleExpression(TIE->getExprOperand());
4354 }
4355 break;
4356 }
4357
4358 case Expr::CXXDeleteExprClass: {
4359 const CXXDeleteExpr *DE = cast<CXXDeleteExpr>(E);
4360 // <expression> ::= [gs] dl <expression> # [::] delete expr
4361 // ::= [gs] da <expression> # [::] delete [] expr
4362 if (DE->isGlobalDelete()) Out << "gs";
4363 Out << (DE->isArrayForm() ? "da" : "dl");
4364 mangleExpression(DE->getArgument());
4365 break;
4366 }
4367
4368 case Expr::UnaryOperatorClass: {
4369 const UnaryOperator *UO = cast<UnaryOperator>(E);
4370 mangleOperatorName(UnaryOperator::getOverloadedOperator(UO->getOpcode()),
4371 /*Arity=*/1);
4372 mangleExpression(UO->getSubExpr());
4373 break;
4374 }
4375
4376 case Expr::ArraySubscriptExprClass: {
4377 const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(E);
4378
4379 // Array subscript is treated as a syntactically weird form of
4380 // binary operator.
4381 Out << "ix";
4382 mangleExpression(AE->getLHS());
4383 mangleExpression(AE->getRHS());
4384 break;
4385 }
4386
4387 case Expr::MatrixSubscriptExprClass: {
4388 const MatrixSubscriptExpr *ME = cast<MatrixSubscriptExpr>(E);
4389 Out << "ixix";
4390 mangleExpression(ME->getBase());
4391 mangleExpression(ME->getRowIdx());
4392 mangleExpression(ME->getColumnIdx());
4393 break;
4394 }
4395
4396 case Expr::CompoundAssignOperatorClass: // fallthrough
4397 case Expr::BinaryOperatorClass: {
4398 const BinaryOperator *BO = cast<BinaryOperator>(E);
4399 if (BO->getOpcode() == BO_PtrMemD)
4400 Out << "ds";
4401 else
4402 mangleOperatorName(BinaryOperator::getOverloadedOperator(BO->getOpcode()),
4403 /*Arity=*/2);
4404 mangleExpression(BO->getLHS());
4405 mangleExpression(BO->getRHS());
4406 break;
4407 }
4408
4409 case Expr::CXXRewrittenBinaryOperatorClass: {
4410 // The mangled form represents the original syntax.
4411 CXXRewrittenBinaryOperator::DecomposedForm Decomposed =
4412 cast<CXXRewrittenBinaryOperator>(E)->getDecomposedForm();
4413 mangleOperatorName(BinaryOperator::getOverloadedOperator(Decomposed.Opcode),
4414 /*Arity=*/2);
4415 mangleExpression(Decomposed.LHS);
4416 mangleExpression(Decomposed.RHS);
4417 break;
4418 }
4419
4420 case Expr::ConditionalOperatorClass: {
4421 const ConditionalOperator *CO = cast<ConditionalOperator>(E);
4422 mangleOperatorName(OO_Conditional, /*Arity=*/3);
4423 mangleExpression(CO->getCond());
4424 mangleExpression(CO->getLHS(), Arity);
4425 mangleExpression(CO->getRHS(), Arity);
4426 break;
4427 }
4428
4429 case Expr::ImplicitCastExprClass: {
4430 ImplicitlyConvertedToType = E->getType();
4431 E = cast<ImplicitCastExpr>(E)->getSubExpr();
4432 goto recurse;
4433 }
4434
4435 case Expr::ObjCBridgedCastExprClass: {
4436 // Mangle ownership casts as a vendor extended operator __bridge,
4437 // __bridge_transfer, or __bridge_retain.
4438 StringRef Kind = cast<ObjCBridgedCastExpr>(E)->getBridgeKindName();
4439 Out << "v1U" << Kind.size() << Kind;
4440 }
4441 // Fall through to mangle the cast itself.
4442 LLVM_FALLTHROUGH[[gnu::fallthrough]];
4443
4444 case Expr::CStyleCastExprClass:
4445 mangleCastExpression(E, "cv");
4446 break;
4447
4448 case Expr::CXXFunctionalCastExprClass: {
4449 auto *Sub = cast<ExplicitCastExpr>(E)->getSubExpr()->IgnoreImplicit();
4450 // FIXME: Add isImplicit to CXXConstructExpr.
4451 if (auto *CCE = dyn_cast<CXXConstructExpr>(Sub))
4452 if (CCE->getParenOrBraceRange().isInvalid())
4453 Sub = CCE->getArg(0)->IgnoreImplicit();
4454 if (auto *StdInitList = dyn_cast<CXXStdInitializerListExpr>(Sub))
4455 Sub = StdInitList->getSubExpr()->IgnoreImplicit();
4456 if (auto *IL = dyn_cast<InitListExpr>(Sub)) {
4457 Out << "tl";
4458 mangleType(E->getType());
4459 mangleInitListElements(IL);
4460 Out << "E";
4461 } else {
4462 mangleCastExpression(E, "cv");
4463 }
4464 break;
4465 }
4466
4467 case Expr::CXXStaticCastExprClass:
4468 mangleCastExpression(E, "sc");
4469 break;
4470 case Expr::CXXDynamicCastExprClass:
4471 mangleCastExpression(E, "dc");
4472 break;
4473 case Expr::CXXReinterpretCastExprClass:
4474 mangleCastExpression(E, "rc");
4475 break;
4476 case Expr::CXXConstCastExprClass:
4477 mangleCastExpression(E, "cc");
4478 break;
4479 case Expr::CXXAddrspaceCastExprClass:
4480 mangleCastExpression(E, "ac");
4481 break;
4482
4483 case Expr::CXXOperatorCallExprClass: {
4484 const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E);
4485 unsigned NumArgs = CE->getNumArgs();
4486 // A CXXOperatorCallExpr for OO_Arrow models only semantics, not syntax
4487 // (the enclosing MemberExpr covers the syntactic portion).
4488 if (CE->getOperator() != OO_Arrow)
4489 mangleOperatorName(CE->getOperator(), /*Arity=*/NumArgs);
4490 // Mangle the arguments.
4491 for (unsigned i = 0; i != NumArgs; ++i)
4492 mangleExpression(CE->getArg(i));
4493 break;
4494 }
4495
4496 case Expr::ParenExprClass:
4497 mangleExpression(cast<ParenExpr>(E)->getSubExpr(), Arity);
4498 break;
4499
4500
4501 case Expr::ConceptSpecializationExprClass: {
4502 // <expr-primary> ::= L <mangled-name> E # external name
4503 Out << "L_Z";
4504 auto *CSE = cast<ConceptSpecializationExpr>(E);
4505 mangleTemplateName(CSE->getNamedConcept(),
4506 CSE->getTemplateArguments().data(),
4507 CSE->getTemplateArguments().size());
4508 Out << 'E';
4509 break;
4510 }
4511
4512 case Expr::DeclRefExprClass:
4513 mangleDeclRefExpr(cast<DeclRefExpr>(E)->getDecl());
4514 break;
4515
4516 case Expr::SubstNonTypeTemplateParmPackExprClass:
4517 // FIXME: not clear how to mangle this!
4518 // template <unsigned N...> class A {
4519 // template <class U...> void foo(U (&x)[N]...);
4520 // };
4521 Out << "_SUBSTPACK_";
4522 break;
4523
4524 case Expr::FunctionParmPackExprClass: {
4525 // FIXME: not clear how to mangle this!
4526 const FunctionParmPackExpr *FPPE = cast<FunctionParmPackExpr>(E);
4527 Out << "v110_SUBSTPACK";
4528 mangleDeclRefExpr(FPPE->getParameterPack());
4529 break;
4530 }
4531
4532 case Expr::DependentScopeDeclRefExprClass: {
4533 const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E);
4534 mangleUnresolvedName(DRE->getQualifier(), DRE->getDeclName(),
4535 DRE->getTemplateArgs(), DRE->getNumTemplateArgs(),
4536 Arity);
4537 break;
4538 }
4539
4540 case Expr::CXXBindTemporaryExprClass:
4541 mangleExpression(cast<CXXBindTemporaryExpr>(E)->getSubExpr());
4542 break;
4543
4544 case Expr::ExprWithCleanupsClass:
4545 mangleExpression(cast<ExprWithCleanups>(E)->getSubExpr(), Arity);
4546 break;
4547
4548 case Expr::FloatingLiteralClass: {
4549 const FloatingLiteral *FL = cast<FloatingLiteral>(E);
4550 Out << 'L';
4551 mangleType(FL->getType());
4552 mangleFloat(FL->getValue());
4553 Out << 'E';
4554 break;
4555 }
4556
4557 case Expr::CharacterLiteralClass:
4558 Out << 'L';
4559 mangleType(E->getType());
4560 Out << cast<CharacterLiteral>(E)->getValue();
4561 Out << 'E';
4562 break;
4563
4564 // FIXME. __objc_yes/__objc_no are mangled same as true/false
4565 case Expr::ObjCBoolLiteralExprClass:
4566 Out << "Lb";
4567 Out << (cast<ObjCBoolLiteralExpr>(E)->getValue() ? '1' : '0');
4568 Out << 'E';
4569 break;
4570
4571 case Expr::CXXBoolLiteralExprClass:
4572 Out << "Lb";
4573 Out << (cast<CXXBoolLiteralExpr>(E)->getValue() ? '1' : '0');
4574 Out << 'E';
4575 break;
4576
4577 case Expr::IntegerLiteralClass: {
4578 llvm::APSInt Value(cast<IntegerLiteral>(E)->getValue());
4579 if (E->getType()->isSignedIntegerType())
4580 Value.setIsSigned(true);
4581 mangleIntegerLiteral(E->getType(), Value);
4582 break;
4583 }
4584
4585 case Expr::ImaginaryLiteralClass: {
4586 const ImaginaryLiteral *IE = cast<ImaginaryLiteral>(E);
4587 // Mangle as if a complex literal.
4588 // Proposal from David Vandevoorde, 2010.06.30.
4589 Out << 'L';
4590 mangleType(E->getType());
4591 if (const FloatingLiteral *Imag =
4592 dyn_cast<FloatingLiteral>(IE->getSubExpr())) {
4593 // Mangle a floating-point zero of the appropriate type.
4594 mangleFloat(llvm::APFloat(Imag->getValue().getSemantics()));
4595 Out << '_';
4596 mangleFloat(Imag->getValue());
4597 } else {
4598 Out << "0_";
4599 llvm::APSInt Value(cast<IntegerLiteral>(IE->getSubExpr())->getValue());
4600 if (IE->getSubExpr()->getType()->isSignedIntegerType())
4601 Value.setIsSigned(true);
4602 mangleNumber(Value);
4603 }
4604 Out << 'E';
4605 break;
4606 }
4607
4608 case Expr::StringLiteralClass: {
4609 // Revised proposal from David Vandervoorde, 2010.07.15.
4610 Out << 'L';
4611 assert(isa<ConstantArrayType>(E->getType()))((isa<ConstantArrayType>(E->getType())) ? static_cast
<void> (0) : __assert_fail ("isa<ConstantArrayType>(E->getType())"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4611, __PRETTY_FUNCTION__))
;
4612 mangleType(E->getType());
4613 Out << 'E';
4614 break;
4615 }
4616
4617 case Expr::GNUNullExprClass:
4618 // Mangle as if an integer literal 0.
4619 Out << 'L';
4620 mangleType(E->getType());
4621 Out << "0E";
4622 break;
4623
4624 case Expr::CXXNullPtrLiteralExprClass: {
4625 Out << "LDnE";
4626 break;
4627 }
4628
4629 case Expr::PackExpansionExprClass:
4630 Out << "sp";
4631 mangleExpression(cast<PackExpansionExpr>(E)->getPattern());
4632 break;
4633
4634 case Expr::SizeOfPackExprClass: {
4635 auto *SPE = cast<SizeOfPackExpr>(E);
4636 if (SPE->isPartiallySubstituted()) {
4637 Out << "sP";
4638 for (const auto &A : SPE->getPartialArguments())
4639 mangleTemplateArg(A);
4640 Out << "E";
4641 break;
4642 }
4643
4644 Out << "sZ";
4645 const NamedDecl *Pack = SPE->getPack();
4646 if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Pack))
4647 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
4648 else if (const NonTypeTemplateParmDecl *NTTP
4649 = dyn_cast<NonTypeTemplateParmDecl>(Pack))
4650 mangleTemplateParameter(NTTP->getDepth(), NTTP->getIndex());
4651 else if (const TemplateTemplateParmDecl *TempTP
4652 = dyn_cast<TemplateTemplateParmDecl>(Pack))
4653 mangleTemplateParameter(TempTP->getDepth(), TempTP->getIndex());
4654 else
4655 mangleFunctionParam(cast<ParmVarDecl>(Pack));
4656 break;
4657 }
4658
4659 case Expr::MaterializeTemporaryExprClass: {
4660 mangleExpression(cast<MaterializeTemporaryExpr>(E)->getSubExpr());
4661 break;
4662 }
4663
4664 case Expr::CXXFoldExprClass: {
4665 auto *FE = cast<CXXFoldExpr>(E);
4666 if (FE->isLeftFold())
4667 Out << (FE->getInit() ? "fL" : "fl");
4668 else
4669 Out << (FE->getInit() ? "fR" : "fr");
4670
4671 if (FE->getOperator() == BO_PtrMemD)
4672 Out << "ds";
4673 else
4674 mangleOperatorName(
4675 BinaryOperator::getOverloadedOperator(FE->getOperator()),
4676 /*Arity=*/2);
4677
4678 if (FE->getLHS())
4679 mangleExpression(FE->getLHS());
4680 if (FE->getRHS())
4681 mangleExpression(FE->getRHS());
4682 break;
4683 }
4684
4685 case Expr::CXXThisExprClass:
4686 Out << "fpT";
4687 break;
4688
4689 case Expr::CoawaitExprClass:
4690 // FIXME: Propose a non-vendor mangling.
4691 Out << "v18co_await";
4692 mangleExpression(cast<CoawaitExpr>(E)->getOperand());
4693 break;
4694
4695 case Expr::DependentCoawaitExprClass:
4696 // FIXME: Propose a non-vendor mangling.
4697 Out << "v18co_await";
4698 mangleExpression(cast<DependentCoawaitExpr>(E)->getOperand());
4699 break;
4700
4701 case Expr::CoyieldExprClass:
4702 // FIXME: Propose a non-vendor mangling.
4703 Out << "v18co_yield";
4704 mangleExpression(cast<CoawaitExpr>(E)->getOperand());
4705 break;
4706 }
4707}
4708
4709/// Mangle an expression which refers to a parameter variable.
4710///
4711/// <expression> ::= <function-param>
4712/// <function-param> ::= fp <top-level CV-qualifiers> _ # L == 0, I == 0
4713/// <function-param> ::= fp <top-level CV-qualifiers>
4714/// <parameter-2 non-negative number> _ # L == 0, I > 0
4715/// <function-param> ::= fL <L-1 non-negative number>
4716/// p <top-level CV-qualifiers> _ # L > 0, I == 0
4717/// <function-param> ::= fL <L-1 non-negative number>
4718/// p <top-level CV-qualifiers>
4719/// <I-1 non-negative number> _ # L > 0, I > 0
4720///
4721/// L is the nesting depth of the parameter, defined as 1 if the
4722/// parameter comes from the innermost function prototype scope
4723/// enclosing the current context, 2 if from the next enclosing
4724/// function prototype scope, and so on, with one special case: if
4725/// we've processed the full parameter clause for the innermost
4726/// function type, then L is one less. This definition conveniently
4727/// makes it irrelevant whether a function's result type was written
4728/// trailing or leading, but is otherwise overly complicated; the
4729/// numbering was first designed without considering references to
4730/// parameter in locations other than return types, and then the
4731/// mangling had to be generalized without changing the existing
4732/// manglings.
4733///
4734/// I is the zero-based index of the parameter within its parameter
4735/// declaration clause. Note that the original ABI document describes
4736/// this using 1-based ordinals.
4737void CXXNameMangler::mangleFunctionParam(const ParmVarDecl *parm) {
4738 unsigned parmDepth = parm->getFunctionScopeDepth();
4739 unsigned parmIndex = parm->getFunctionScopeIndex();
4740
4741 // Compute 'L'.
4742 // parmDepth does not include the declaring function prototype.
4743 // FunctionTypeDepth does account for that.
4744 assert(parmDepth < FunctionTypeDepth.getDepth())((parmDepth < FunctionTypeDepth.getDepth()) ? static_cast<
void> (0) : __assert_fail ("parmDepth < FunctionTypeDepth.getDepth()"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4744, __PRETTY_FUNCTION__))
;
4745 unsigned nestingDepth = FunctionTypeDepth.getDepth() - parmDepth;
4746 if (FunctionTypeDepth.isInResultType())
4747 nestingDepth--;
4748
4749 if (nestingDepth == 0) {
4750 Out << "fp";
4751 } else {
4752 Out << "fL" << (nestingDepth - 1) << 'p';
4753 }
4754
4755 // Top-level qualifiers. We don't have to worry about arrays here,
4756 // because parameters declared as arrays should already have been
4757 // transformed to have pointer type. FIXME: apparently these don't
4758 // get mangled if used as an rvalue of a known non-class type?
4759 assert(!parm->getType()->isArrayType()((!parm->getType()->isArrayType() && "parameter's type is still an array type?"
) ? static_cast<void> (0) : __assert_fail ("!parm->getType()->isArrayType() && \"parameter's type is still an array type?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4760, __PRETTY_FUNCTION__))
4760 && "parameter's type is still an array type?")((!parm->getType()->isArrayType() && "parameter's type is still an array type?"
) ? static_cast<void> (0) : __assert_fail ("!parm->getType()->isArrayType() && \"parameter's type is still an array type?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4760, __PRETTY_FUNCTION__))
;
4761
4762 if (const DependentAddressSpaceType *DAST =
4763 dyn_cast<DependentAddressSpaceType>(parm->getType())) {
4764 mangleQualifiers(DAST->getPointeeType().getQualifiers(), DAST);
4765 } else {
4766 mangleQualifiers(parm->getType().getQualifiers());
4767 }
4768
4769 // Parameter index.
4770 if (parmIndex != 0) {
4771 Out << (parmIndex - 1);
4772 }
4773 Out << '_';
4774}
4775
4776void CXXNameMangler::mangleCXXCtorType(CXXCtorType T,
4777 const CXXRecordDecl *InheritedFrom) {
4778 // <ctor-dtor-name> ::= C1 # complete object constructor
4779 // ::= C2 # base object constructor
4780 // ::= CI1 <type> # complete inheriting constructor
4781 // ::= CI2 <type> # base inheriting constructor
4782 //
4783 // In addition, C5 is a comdat name with C1 and C2 in it.
4784 Out << 'C';
4785 if (InheritedFrom)
4786 Out << 'I';
4787 switch (T) {
4788 case Ctor_Complete:
4789 Out << '1';
4790 break;
4791 case Ctor_Base:
4792 Out << '2';
4793 break;
4794 case Ctor_Comdat:
4795 Out << '5';
4796 break;
4797 case Ctor_DefaultClosure:
4798 case Ctor_CopyingClosure:
4799 llvm_unreachable("closure constructors don't exist for the Itanium ABI!")::llvm::llvm_unreachable_internal("closure constructors don't exist for the Itanium ABI!"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4799)
;
4800 }
4801 if (InheritedFrom)
4802 mangleName(InheritedFrom);
4803}
4804
4805void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
4806 // <ctor-dtor-name> ::= D0 # deleting destructor
4807 // ::= D1 # complete object destructor
4808 // ::= D2 # base object destructor
4809 //
4810 // In addition, D5 is a comdat name with D1, D2 and, if virtual, D0 in it.
4811 switch (T) {
4812 case Dtor_Deleting:
4813 Out << "D0";
4814 break;
4815 case Dtor_Complete:
4816 Out << "D1";
4817 break;
4818 case Dtor_Base:
4819 Out << "D2";
4820 break;
4821 case Dtor_Comdat:
4822 Out << "D5";
4823 break;
4824 }
4825}
4826
4827void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentLoc *TemplateArgs,
4828 unsigned NumTemplateArgs) {
4829 // <template-args> ::= I <template-arg>+ E
4830 Out << 'I';
4831 for (unsigned i = 0; i != NumTemplateArgs; ++i)
4832 mangleTemplateArg(TemplateArgs[i].getArgument());
4833 Out << 'E';
4834}
4835
4836void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentList &AL) {
4837 // <template-args> ::= I <template-arg>+ E
4838 Out << 'I';
4839 for (unsigned i = 0, e = AL.size(); i != e; ++i)
4840 mangleTemplateArg(AL[i]);
4841 Out << 'E';
4842}
4843
4844void CXXNameMangler::mangleTemplateArgs(const TemplateArgument *TemplateArgs,
4845 unsigned NumTemplateArgs) {
4846 // <template-args> ::= I <template-arg>+ E
4847 Out << 'I';
4848 for (unsigned i = 0; i != NumTemplateArgs; ++i)
4849 mangleTemplateArg(TemplateArgs[i]);
4850 Out << 'E';
4851}
4852
4853void CXXNameMangler::mangleTemplateArg(TemplateArgument A) {
4854 // <template-arg> ::= <type> # type or template
4855 // ::= X <expression> E # expression
4856 // ::= <expr-primary> # simple expressions
4857 // ::= J <template-arg>* E # argument pack
4858 if (!A.isInstantiationDependent() || A.isDependent())
4859 A = Context.getASTContext().getCanonicalTemplateArgument(A);
4860
4861 switch (A.getKind()) {
4862 case TemplateArgument::Null:
4863 llvm_unreachable("Cannot mangle NULL template argument")::llvm::llvm_unreachable_internal("Cannot mangle NULL template argument"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4863)
;
4864
4865 case TemplateArgument::Type:
4866 mangleType(A.getAsType());
4867 break;
4868 case TemplateArgument::Template:
4869 // This is mangled as <type>.
4870 mangleType(A.getAsTemplate());
4871 break;
4872 case TemplateArgument::TemplateExpansion:
4873 // <type> ::= Dp <type> # pack expansion (C++0x)
4874 Out << "Dp";
4875 mangleType(A.getAsTemplateOrTemplatePattern());
4876 break;
4877 case TemplateArgument::Expression: {
4878 // It's possible to end up with a DeclRefExpr here in certain
4879 // dependent cases, in which case we should mangle as a
4880 // declaration.
4881 const Expr *E = A.getAsExpr()->IgnoreParenImpCasts();
4882 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) {
4883 const ValueDecl *D = DRE->getDecl();
4884 if (isa<VarDecl>(D) || isa<FunctionDecl>(D)) {
4885 Out << 'L';
4886 mangle(D);
4887 Out << 'E';
4888 break;
4889 }
4890 }
4891
4892 Out << 'X';
4893 mangleExpression(E);
4894 Out << 'E';
4895 break;
4896 }
4897 case TemplateArgument::Integral:
4898 mangleIntegerLiteral(A.getIntegralType(), A.getAsIntegral());
4899 break;
4900 case TemplateArgument::Declaration: {
4901 // <expr-primary> ::= L <mangled-name> E # external name
4902 // Clang produces AST's where pointer-to-member-function expressions
4903 // and pointer-to-function expressions are represented as a declaration not
4904 // an expression. We compensate for it here to produce the correct mangling.
4905 ValueDecl *D = A.getAsDecl();
4906 bool compensateMangling = !A.getParamTypeForDecl()->isReferenceType();
4907 if (compensateMangling) {
4908 Out << 'X';
4909 mangleOperatorName(OO_Amp, 1);
4910 }
4911
4912 Out << 'L';
4913 // References to external entities use the mangled name; if the name would
4914 // not normally be mangled then mangle it as unqualified.
4915 mangle(D);
4916 Out << 'E';
4917
4918 if (compensateMangling)
4919 Out << 'E';
4920
4921 break;
4922 }
4923 case TemplateArgument::NullPtr: {
4924 // <expr-primary> ::= L <type> 0 E
4925 Out << 'L';
4926 mangleType(A.getNullPtrType());
4927 Out << "0E";
4928 break;
4929 }
4930 case TemplateArgument::Pack: {
4931 // <template-arg> ::= J <template-arg>* E
4932 Out << 'J';
4933 for (const auto &P : A.pack_elements())
4934 mangleTemplateArg(P);
4935 Out << 'E';
4936 }
4937 }
4938}
4939
4940void CXXNameMangler::mangleTemplateParameter(unsigned Depth, unsigned Index) {
4941 // <template-param> ::= T_ # first template parameter
4942 // ::= T <parameter-2 non-negative number> _
4943 // ::= TL <L-1 non-negative number> __
4944 // ::= TL <L-1 non-negative number> _
4945 // <parameter-2 non-negative number> _
4946 //
4947 // The latter two manglings are from a proposal here:
4948 // https://github.com/itanium-cxx-abi/cxx-abi/issues/31#issuecomment-528122117
4949 Out << 'T';
4950 if (Depth != 0)
4951 Out << 'L' << (Depth - 1) << '_';
4952 if (Index != 0)
4953 Out << (Index - 1);
4954 Out << '_';
4955}
4956
4957void CXXNameMangler::mangleSeqID(unsigned SeqID) {
4958 if (SeqID == 1)
4959 Out << '0';
4960 else if (SeqID > 1) {
4961 SeqID--;
4962
4963 // <seq-id> is encoded in base-36, using digits and upper case letters.
4964 char Buffer[7]; // log(2**32) / log(36) ~= 7
4965 MutableArrayRef<char> BufferRef(Buffer);
4966 MutableArrayRef<char>::reverse_iterator I = BufferRef.rbegin();
4967
4968 for (; SeqID != 0; SeqID /= 36) {
4969 unsigned C = SeqID % 36;
4970 *I++ = (C < 10 ? '0' + C : 'A' + C - 10);
4971 }
4972
4973 Out.write(I.base(), I - BufferRef.rbegin());
4974 }
4975 Out << '_';
4976}
4977
4978void CXXNameMangler::mangleExistingSubstitution(TemplateName tname) {
4979 bool result = mangleSubstitution(tname);
4980 assert(result && "no existing substitution for template name")((result && "no existing substitution for template name"
) ? static_cast<void> (0) : __assert_fail ("result && \"no existing substitution for template name\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 4980, __PRETTY_FUNCTION__))
;
4981 (void) result;
4982}
4983
4984// <substitution> ::= S <seq-id> _
4985// ::= S_
4986bool CXXNameMangler::mangleSubstitution(const NamedDecl *ND) {
4987 // Try one of the standard substitutions first.
4988 if (mangleStandardSubstitution(ND))
4989 return true;
4990
4991 ND = cast<NamedDecl>(ND->getCanonicalDecl());
4992 return mangleSubstitution(reinterpret_cast<uintptr_t>(ND));
4993}
4994
4995/// Determine whether the given type has any qualifiers that are relevant for
4996/// substitutions.
4997static bool hasMangledSubstitutionQualifiers(QualType T) {
4998 Qualifiers Qs = T.getQualifiers();
4999 return Qs.getCVRQualifiers() || Qs.hasAddressSpace() || Qs.hasUnaligned();
5000}
5001
5002bool CXXNameMangler::mangleSubstitution(QualType T) {
5003 if (!hasMangledSubstitutionQualifiers(T)) {
5004 if (const RecordType *RT = T->getAs<RecordType>())
5005 return mangleSubstitution(RT->getDecl());
5006 }
5007
5008 uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
5009
5010 return mangleSubstitution(TypePtr);
5011}
5012
5013bool CXXNameMangler::mangleSubstitution(TemplateName Template) {
5014 if (TemplateDecl *TD = Template.getAsTemplateDecl())
5015 return mangleSubstitution(TD);
5016
5017 Template = Context.getASTContext().getCanonicalTemplateName(Template);
5018 return mangleSubstitution(
5019 reinterpret_cast<uintptr_t>(Template.getAsVoidPointer()));
5020}
5021
5022bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) {
5023 llvm::DenseMap<uintptr_t, unsigned>::iterator I = Substitutions.find(Ptr);
5024 if (I == Substitutions.end())
5025 return false;
5026
5027 unsigned SeqID = I->second;
5028 Out << 'S';
5029 mangleSeqID(SeqID);
5030
5031 return true;
5032}
5033
5034static bool isCharType(QualType T) {
5035 if (T.isNull())
5036 return false;
5037
5038 return T->isSpecificBuiltinType(BuiltinType::Char_S) ||
5039 T->isSpecificBuiltinType(BuiltinType::Char_U);
5040}
5041
5042/// Returns whether a given type is a template specialization of a given name
5043/// with a single argument of type char.
5044static bool isCharSpecialization(QualType T, const char *Name) {
5045 if (T.isNull())
5046 return false;
5047
5048 const RecordType *RT = T->getAs<RecordType>();
5049 if (!RT)
5050 return false;
5051
5052 const ClassTemplateSpecializationDecl *SD =
5053 dyn_cast<ClassTemplateSpecializationDecl>(RT->getDecl());
5054 if (!SD)
5055 return false;
5056
5057 if (!isStdNamespace(getEffectiveDeclContext(SD)))
5058 return false;
5059
5060 const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
5061 if (TemplateArgs.size() != 1)
5062 return false;
5063
5064 if (!isCharType(TemplateArgs[0].getAsType()))
5065 return false;
5066
5067 return SD->getIdentifier()->getName() == Name;
5068}
5069
5070template <std::size_t StrLen>
5071static bool isStreamCharSpecialization(const ClassTemplateSpecializationDecl*SD,
5072 const char (&Str)[StrLen]) {
5073 if (!SD->getIdentifier()->isStr(Str))
5074 return false;
5075
5076 const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
5077 if (TemplateArgs.size() != 2)
5078 return false;
5079
5080 if (!isCharType(TemplateArgs[0].getAsType()))
5081 return false;
5082
5083 if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits"))
5084 return false;
5085
5086 return true;
5087}
5088
5089bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) {
5090 // <substitution> ::= St # ::std::
5091 if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
5092 if (isStd(NS)) {
5093 Out << "St";
5094 return true;
5095 }
5096 }
5097
5098 if (const ClassTemplateDecl *TD = dyn_cast<ClassTemplateDecl>(ND)) {
5099 if (!isStdNamespace(getEffectiveDeclContext(TD)))
5100 return false;
5101
5102 // <substitution> ::= Sa # ::std::allocator
5103 if (TD->getIdentifier()->isStr("allocator")) {
5104 Out << "Sa";
5105 return true;
5106 }
5107
5108 // <<substitution> ::= Sb # ::std::basic_string
5109 if (TD->getIdentifier()->isStr("basic_string")) {
5110 Out << "Sb";
5111 return true;
5112 }
5113 }
5114
5115 if (const ClassTemplateSpecializationDecl *SD =
5116 dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
5117 if (!isStdNamespace(getEffectiveDeclContext(SD)))
5118 return false;
5119
5120 // <substitution> ::= Ss # ::std::basic_string<char,
5121 // ::std::char_traits<char>,
5122 // ::std::allocator<char> >
5123 if (SD->getIdentifier()->isStr("basic_string")) {
5124 const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
5125
5126 if (TemplateArgs.size() != 3)
5127 return false;
5128
5129 if (!isCharType(TemplateArgs[0].getAsType()))
5130 return false;
5131
5132 if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits"))
5133 return false;
5134
5135 if (!isCharSpecialization(TemplateArgs[2].getAsType(), "allocator"))
5136 return false;
5137
5138 Out << "Ss";
5139 return true;
5140 }
5141
5142 // <substitution> ::= Si # ::std::basic_istream<char,
5143 // ::std::char_traits<char> >
5144 if (isStreamCharSpecialization(SD, "basic_istream")) {
5145 Out << "Si";
5146 return true;
5147 }
5148
5149 // <substitution> ::= So # ::std::basic_ostream<char,
5150 // ::std::char_traits<char> >
5151 if (isStreamCharSpecialization(SD, "basic_ostream")) {
5152 Out << "So";
5153 return true;
5154 }
5155
5156 // <substitution> ::= Sd # ::std::basic_iostream<char,
5157 // ::std::char_traits<char> >
5158 if (isStreamCharSpecialization(SD, "basic_iostream")) {
5159 Out << "Sd";
5160 return true;
5161 }
5162 }
5163 return false;
5164}
5165
5166void CXXNameMangler::addSubstitution(QualType T) {
5167 if (!hasMangledSubstitutionQualifiers(T)) {
5168 if (const RecordType *RT = T->getAs<RecordType>()) {
5169 addSubstitution(RT->getDecl());
5170 return;
5171 }
5172 }
5173
5174 uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
5175 addSubstitution(TypePtr);
5176}
5177
5178void CXXNameMangler::addSubstitution(TemplateName Template) {
5179 if (TemplateDecl *TD = Template.getAsTemplateDecl())
5180 return addSubstitution(TD);
5181
5182 Template = Context.getASTContext().getCanonicalTemplateName(Template);
5183 addSubstitution(reinterpret_cast<uintptr_t>(Template.getAsVoidPointer()));
5184}
5185
5186void CXXNameMangler::addSubstitution(uintptr_t Ptr) {
5187 assert(!Substitutions.count(Ptr) && "Substitution already exists!")((!Substitutions.count(Ptr) && "Substitution already exists!"
) ? static_cast<void> (0) : __assert_fail ("!Substitutions.count(Ptr) && \"Substitution already exists!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5187, __PRETTY_FUNCTION__))
;
5188 Substitutions[Ptr] = SeqID++;
5189}
5190
5191void CXXNameMangler::extendSubstitutions(CXXNameMangler* Other) {
5192 assert(Other->SeqID >= SeqID && "Must be superset of substitutions!")((Other->SeqID >= SeqID && "Must be superset of substitutions!"
) ? static_cast<void> (0) : __assert_fail ("Other->SeqID >= SeqID && \"Must be superset of substitutions!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5192, __PRETTY_FUNCTION__))
;
5193 if (Other->SeqID > SeqID) {
5194 Substitutions.swap(Other->Substitutions);
5195 SeqID = Other->SeqID;
5196 }
5197}
5198
5199CXXNameMangler::AbiTagList
5200CXXNameMangler::makeFunctionReturnTypeTags(const FunctionDecl *FD) {
5201 // When derived abi tags are disabled there is no need to make any list.
5202 if (DisableDerivedAbiTags)
5203 return AbiTagList();
5204
5205 llvm::raw_null_ostream NullOutStream;
5206 CXXNameMangler TrackReturnTypeTags(*this, NullOutStream);
5207 TrackReturnTypeTags.disableDerivedAbiTags();
5208
5209 const FunctionProtoType *Proto =
5210 cast<FunctionProtoType>(FD->getType()->getAs<FunctionType>());
5211 FunctionTypeDepthState saved = TrackReturnTypeTags.FunctionTypeDepth.push();
5212 TrackReturnTypeTags.FunctionTypeDepth.enterResultType();
5213 TrackReturnTypeTags.mangleType(Proto->getReturnType());
5214 TrackReturnTypeTags.FunctionTypeDepth.leaveResultType();
5215 TrackReturnTypeTags.FunctionTypeDepth.pop(saved);
5216
5217 return TrackReturnTypeTags.AbiTagsRoot.getSortedUniqueUsedAbiTags();
5218}
5219
5220CXXNameMangler::AbiTagList
5221CXXNameMangler::makeVariableTypeTags(const VarDecl *VD) {
5222 // When derived abi tags are disabled there is no need to make any list.
5223 if (DisableDerivedAbiTags)
5224 return AbiTagList();
5225
5226 llvm::raw_null_ostream NullOutStream;
5227 CXXNameMangler TrackVariableType(*this, NullOutStream);
5228 TrackVariableType.disableDerivedAbiTags();
5229
5230 TrackVariableType.mangleType(VD->getType());
5231
5232 return TrackVariableType.AbiTagsRoot.getSortedUniqueUsedAbiTags();
5233}
5234
5235bool CXXNameMangler::shouldHaveAbiTags(ItaniumMangleContextImpl &C,
5236 const VarDecl *VD) {
5237 llvm::raw_null_ostream NullOutStream;
5238 CXXNameMangler TrackAbiTags(C, NullOutStream, nullptr, true);
5239 TrackAbiTags.mangle(VD);
5240 return TrackAbiTags.AbiTagsRoot.getUsedAbiTags().size();
5241}
5242
5243//
5244
5245/// Mangles the name of the declaration D and emits that name to the given
5246/// output stream.
5247///
5248/// If the declaration D requires a mangled name, this routine will emit that
5249/// mangled name to \p os and return true. Otherwise, \p os will be unchanged
5250/// and this routine will return false. In this case, the caller should just
5251/// emit the identifier of the declaration (\c D->getIdentifier()) as its
5252/// name.
5253void ItaniumMangleContextImpl::mangleCXXName(GlobalDecl GD,
5254 raw_ostream &Out) {
5255 const NamedDecl *D = cast<NamedDecl>(GD.getDecl());
5256 assert((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&(((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&
"Invalid mangleName() call, argument is not a variable or function!"
) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl>(D) || isa<VarDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5257, __PRETTY_FUNCTION__))
5257 "Invalid mangleName() call, argument is not a variable or function!")(((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&
"Invalid mangleName() call, argument is not a variable or function!"
) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl>(D) || isa<VarDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5257, __PRETTY_FUNCTION__))
;
5258
5259 PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
5260 getASTContext().getSourceManager(),
5261 "Mangling declaration");
5262
5263 if (auto *CD = dyn_cast<CXXConstructorDecl>(D)) {
5264 auto Type = GD.getCtorType();
5265 CXXNameMangler Mangler(*this, Out, CD, Type);
5266 return Mangler.mangle(GlobalDecl(CD, Type));
5267 }
5268
5269 if (auto *DD = dyn_cast<CXXDestructorDecl>(D)) {
5270 auto Type = GD.getDtorType();
5271 CXXNameMangler Mangler(*this, Out, DD, Type);
5272 return Mangler.mangle(GlobalDecl(DD, Type));
5273 }
5274
5275 CXXNameMangler Mangler(*this, Out, D);
5276 Mangler.mangle(GD);
5277}
5278
5279void ItaniumMangleContextImpl::mangleCXXCtorComdat(const CXXConstructorDecl *D,
5280 raw_ostream &Out) {
5281 CXXNameMangler Mangler(*this, Out, D, Ctor_Comdat);
5282 Mangler.mangle(GlobalDecl(D, Ctor_Comdat));
5283}
5284
5285void ItaniumMangleContextImpl::mangleCXXDtorComdat(const CXXDestructorDecl *D,
5286 raw_ostream &Out) {
5287 CXXNameMangler Mangler(*this, Out, D, Dtor_Comdat);
5288 Mangler.mangle(GlobalDecl(D, Dtor_Comdat));
5289}
5290
5291void ItaniumMangleContextImpl::mangleThunk(const CXXMethodDecl *MD,
5292 const ThunkInfo &Thunk,
5293 raw_ostream &Out) {
5294 // <special-name> ::= T <call-offset> <base encoding>
5295 // # base is the nominal target function of thunk
5296 // <special-name> ::= Tc <call-offset> <call-offset> <base encoding>
5297 // # base is the nominal target function of thunk
5298 // # first call-offset is 'this' adjustment
5299 // # second call-offset is result adjustment
5300
5301 assert(!isa<CXXDestructorDecl>(MD) &&((!isa<CXXDestructorDecl>(MD) && "Use mangleCXXDtor for destructor decls!"
) ? static_cast<void> (0) : __assert_fail ("!isa<CXXDestructorDecl>(MD) && \"Use mangleCXXDtor for destructor decls!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5302, __PRETTY_FUNCTION__))
5302 "Use mangleCXXDtor for destructor decls!")((!isa<CXXDestructorDecl>(MD) && "Use mangleCXXDtor for destructor decls!"
) ? static_cast<void> (0) : __assert_fail ("!isa<CXXDestructorDecl>(MD) && \"Use mangleCXXDtor for destructor decls!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5302, __PRETTY_FUNCTION__))
;
5303 CXXNameMangler Mangler(*this, Out);
5304 Mangler.getStream() << "_ZT";
5305 if (!Thunk.Return.isEmpty())
5306 Mangler.getStream() << 'c';
5307
5308 // Mangle the 'this' pointer adjustment.
5309 Mangler.mangleCallOffset(Thunk.This.NonVirtual,
5310 Thunk.This.Virtual.Itanium.VCallOffsetOffset);
5311
5312 // Mangle the return pointer adjustment if there is one.
5313 if (!Thunk.Return.isEmpty())
5314 Mangler.mangleCallOffset(Thunk.Return.NonVirtual,
5315 Thunk.Return.Virtual.Itanium.VBaseOffsetOffset);
5316
5317 Mangler.mangleFunctionEncoding(MD);
5318}
5319
5320void ItaniumMangleContextImpl::mangleCXXDtorThunk(
5321 const CXXDestructorDecl *DD, CXXDtorType Type,
5322 const ThisAdjustment &ThisAdjustment, raw_ostream &Out) {
5323 // <special-name> ::= T <call-offset> <base encoding>
5324 // # base is the nominal target function of thunk
5325 CXXNameMangler Mangler(*this, Out, DD, Type);
5326 Mangler.getStream() << "_ZT";
5327
5328 // Mangle the 'this' pointer adjustment.
5329 Mangler.mangleCallOffset(ThisAdjustment.NonVirtual,
5330 ThisAdjustment.Virtual.Itanium.VCallOffsetOffset);
5331
5332 Mangler.mangleFunctionEncoding(GlobalDecl(DD, Type));
5333}
5334
5335/// Returns the mangled name for a guard variable for the passed in VarDecl.
5336void ItaniumMangleContextImpl::mangleStaticGuardVariable(const VarDecl *D,
5337 raw_ostream &Out) {
5338 // <special-name> ::= GV <object name> # Guard variable for one-time
5339 // # initialization
5340 CXXNameMangler Mangler(*this, Out);
5341 // GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to
5342 // be a bug that is fixed in trunk.
5343 Mangler.getStream() << "_ZGV";
5344 Mangler.mangleName(D);
5345}
5346
5347void ItaniumMangleContextImpl::mangleDynamicInitializer(const VarDecl *MD,
5348 raw_ostream &Out) {
5349 // These symbols are internal in the Itanium ABI, so the names don't matter.
5350 // Clang has traditionally used this symbol and allowed LLVM to adjust it to
5351 // avoid duplicate symbols.
5352 Out << "__cxx_global_var_init";
5353}
5354
5355void ItaniumMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D,
5356 raw_ostream &Out) {
5357 // Prefix the mangling of D with __dtor_.
5358 CXXNameMangler Mangler(*this, Out);
5359 Mangler.getStream() << "__dtor_";
5360 if (shouldMangleDeclName(D))
5361 Mangler.mangle(D);
5362 else
5363 Mangler.getStream() << D->getName();
5364}
5365
5366void ItaniumMangleContextImpl::mangleDynamicStermFinalizer(const VarDecl *D,
5367 raw_ostream &Out) {
5368 // Clang generates these internal-linkage functions as part of its
5369 // implementation of the XL ABI.
5370 CXXNameMangler Mangler(*this, Out);
5371 Mangler.getStream() << "__finalize_";
5372 if (shouldMangleDeclName(D))
5373 Mangler.mangle(D);
5374 else
5375 Mangler.getStream() << D->getName();
5376}
5377
5378void ItaniumMangleContextImpl::mangleSEHFilterExpression(
5379 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
5380 CXXNameMangler Mangler(*this, Out);
5381 Mangler.getStream() << "__filt_";
5382 if (shouldMangleDeclName(EnclosingDecl))
5383 Mangler.mangle(EnclosingDecl);
5384 else
5385 Mangler.getStream() << EnclosingDecl->getName();
5386}
5387
5388void ItaniumMangleContextImpl::mangleSEHFinallyBlock(
5389 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
5390 CXXNameMangler Mangler(*this, Out);
5391 Mangler.getStream() << "__fin_";
5392 if (shouldMangleDeclName(EnclosingDecl))
5393 Mangler.mangle(EnclosingDecl);
5394 else
5395 Mangler.getStream() << EnclosingDecl->getName();
5396}
5397
5398void ItaniumMangleContextImpl::mangleItaniumThreadLocalInit(const VarDecl *D,
5399 raw_ostream &Out) {
5400 // <special-name> ::= TH <object name>
5401 CXXNameMangler Mangler(*this, Out);
5402 Mangler.getStream() << "_ZTH";
5403 Mangler.mangleName(D);
5404}
5405
5406void
5407ItaniumMangleContextImpl::mangleItaniumThreadLocalWrapper(const VarDecl *D,
5408 raw_ostream &Out) {
5409 // <special-name> ::= TW <object name>
5410 CXXNameMangler Mangler(*this, Out);
5411 Mangler.getStream() << "_ZTW";
5412 Mangler.mangleName(D);
5413}
5414
5415void ItaniumMangleContextImpl::mangleReferenceTemporary(const VarDecl *D,
5416 unsigned ManglingNumber,
5417 raw_ostream &Out) {
5418 // We match the GCC mangling here.
5419 // <special-name> ::= GR <object name>
5420 CXXNameMangler Mangler(*this, Out);
5421 Mangler.getStream() << "_ZGR";
5422 Mangler.mangleName(D);
5423 assert(ManglingNumber > 0 && "Reference temporary mangling number is zero!")((ManglingNumber > 0 && "Reference temporary mangling number is zero!"
) ? static_cast<void> (0) : __assert_fail ("ManglingNumber > 0 && \"Reference temporary mangling number is zero!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5423, __PRETTY_FUNCTION__))
;
5424 Mangler.mangleSeqID(ManglingNumber - 1);
5425}
5426
5427void ItaniumMangleContextImpl::mangleCXXVTable(const CXXRecordDecl *RD,
5428 raw_ostream &Out) {
5429 // <special-name> ::= TV <type> # virtual table
5430 CXXNameMangler Mangler(*this, Out);
5431 Mangler.getStream() << "_ZTV";
5432 Mangler.mangleNameOrStandardSubstitution(RD);
5433}
5434
5435void ItaniumMangleContextImpl::mangleCXXVTT(const CXXRecordDecl *RD,
5436 raw_ostream &Out) {
5437 // <special-name> ::= TT <type> # VTT structure
5438 CXXNameMangler Mangler(*this, Out);
5439 Mangler.getStream() << "_ZTT";
5440 Mangler.mangleNameOrStandardSubstitution(RD);
5441}
5442
5443void ItaniumMangleContextImpl::mangleCXXCtorVTable(const CXXRecordDecl *RD,
5444 int64_t Offset,
5445 const CXXRecordDecl *Type,
5446 raw_ostream &Out) {
5447 // <special-name> ::= TC <type> <offset number> _ <base type>
5448 CXXNameMangler Mangler(*this, Out);
5449 Mangler.getStream() << "_ZTC";
5450 Mangler.mangleNameOrStandardSubstitution(RD);
5451 Mangler.getStream() << Offset;
5452 Mangler.getStream() << '_';
5453 Mangler.mangleNameOrStandardSubstitution(Type);
5454}
5455
5456void ItaniumMangleContextImpl::mangleCXXRTTI(QualType Ty, raw_ostream &Out) {
5457 // <special-name> ::= TI <type> # typeinfo structure
5458 assert(!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers")((!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers"
) ? static_cast<void> (0) : __assert_fail ("!Ty.hasQualifiers() && \"RTTI info cannot have top-level qualifiers\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5458, __PRETTY_FUNCTION__))
;
5459 CXXNameMangler Mangler(*this, Out);
5460 Mangler.getStream() << "_ZTI";
5461 Mangler.mangleType(Ty);
5462}
5463
5464void ItaniumMangleContextImpl::mangleCXXRTTIName(QualType Ty,
5465 raw_ostream &Out) {
5466 // <special-name> ::= TS <type> # typeinfo name (null terminated byte string)
5467 CXXNameMangler Mangler(*this, Out);
5468 Mangler.getStream() << "_ZTS";
5469 Mangler.mangleType(Ty);
5470}
5471
5472void ItaniumMangleContextImpl::mangleTypeName(QualType Ty, raw_ostream &Out) {
5473 mangleCXXRTTIName(Ty, Out);
5474}
5475
5476void ItaniumMangleContextImpl::mangleStringLiteral(const StringLiteral *, raw_ostream &) {
5477 llvm_unreachable("Can't mangle string literals")::llvm::llvm_unreachable_internal("Can't mangle string literals"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/AST/ItaniumMangle.cpp"
, 5477)
;
5478}
5479
5480void ItaniumMangleContextImpl::mangleLambdaSig(const CXXRecordDecl *Lambda,
5481 raw_ostream &Out) {
5482 CXXNameMangler Mangler(*this, Out);
5483 Mangler.mangleLambdaSig(Lambda);
5484}
5485
5486ItaniumMangleContext *ItaniumMangleContext::create(ASTContext &Context,
5487 DiagnosticsEngine &Diags,
5488 bool IsUniqueNameMangler) {
5489 return new ItaniumMangleContextImpl(Context, Diags, IsUniqueNameMangler);
5490}

/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h

1//===- DeclarationName.h - Representation of declaration names --*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file declares the DeclarationName and DeclarationNameTable classes.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_CLANG_AST_DECLARATIONNAME_H
14#define LLVM_CLANG_AST_DECLARATIONNAME_H
15
16#include "clang/AST/Type.h"
17#include "clang/Basic/Diagnostic.h"
18#include "clang/Basic/IdentifierTable.h"
19#include "clang/Basic/OperatorKinds.h"
20#include "clang/Basic/PartialDiagnostic.h"
21#include "clang/Basic/SourceLocation.h"
22#include "llvm/ADT/DenseMapInfo.h"
23#include "llvm/ADT/FoldingSet.h"
24#include "llvm/Support/Compiler.h"
25#include "llvm/Support/type_traits.h"
26#include <cassert>
27#include <cstdint>
28#include <cstring>
29#include <string>
30
31namespace clang {
32
33class ASTContext;
34template <typename> class CanQual;
35class DeclarationName;
36class DeclarationNameTable;
37class MultiKeywordSelector;
38struct PrintingPolicy;
39class TemplateDecl;
40class TypeSourceInfo;
41class UsingDirectiveDecl;
42
43using CanQualType = CanQual<Type>;
44
45namespace detail {
46
47/// CXXSpecialNameExtra records the type associated with one of the "special"
48/// kinds of declaration names in C++, e.g., constructors, destructors, and
49/// conversion functions. Note that CXXSpecialName is used for C++ constructor,
50/// destructor and conversion functions, but the actual kind is not stored in
51/// CXXSpecialName. Instead we use three different FoldingSet<CXXSpecialName>
52/// in DeclarationNameTable.
53class alignas(IdentifierInfoAlignment) CXXSpecialNameExtra
54 : public llvm::FoldingSetNode {
55 friend class clang::DeclarationName;
56 friend class clang::DeclarationNameTable;
57
58 /// The type associated with this declaration name.
59 QualType Type;
60
61 /// Extra information associated with this declaration name that
62 /// can be used by the front end. All bits are really needed
63 /// so it is not possible to stash something in the low order bits.
64 void *FETokenInfo;
65
66 CXXSpecialNameExtra(QualType QT) : Type(QT), FETokenInfo(nullptr) {}
67
68public:
69 void Profile(llvm::FoldingSetNodeID &ID) {
70 ID.AddPointer(Type.getAsOpaquePtr());
71 }
72};
73
74/// Contains extra information for the name of a C++ deduction guide.
75class alignas(IdentifierInfoAlignment) CXXDeductionGuideNameExtra
76 : public detail::DeclarationNameExtra,
77 public llvm::FoldingSetNode {
78 friend class clang::DeclarationName;
79 friend class clang::DeclarationNameTable;
80
81 /// The template named by the deduction guide.
82 TemplateDecl *Template;
83
84 /// Extra information associated with this operator name that
85 /// can be used by the front end. All bits are really needed
86 /// so it is not possible to stash something in the low order bits.
87 void *FETokenInfo;
88
89 CXXDeductionGuideNameExtra(TemplateDecl *TD)
90 : DeclarationNameExtra(CXXDeductionGuideName), Template(TD),
91 FETokenInfo(nullptr) {}
92
93public:
94 void Profile(llvm::FoldingSetNodeID &ID) { ID.AddPointer(Template); }
95};
96
97/// Contains extra information for the name of an overloaded operator
98/// in C++, such as "operator+. This do not includes literal or conversion
99/// operators. For literal operators see CXXLiteralOperatorIdName and for
100/// conversion operators see CXXSpecialNameExtra.
101class alignas(IdentifierInfoAlignment) CXXOperatorIdName {
102 friend class clang::DeclarationName;
103 friend class clang::DeclarationNameTable;
104
105 /// The kind of this operator.
106 OverloadedOperatorKind Kind = OO_None;
107
108 /// Extra information associated with this operator name that
109 /// can be used by the front end. All bits are really needed
110 /// so it is not possible to stash something in the low order bits.
111 void *FETokenInfo = nullptr;
112};
113
114/// Contains the actual identifier that makes up the
115/// name of a C++ literal operator.
116class alignas(IdentifierInfoAlignment) CXXLiteralOperatorIdName
117 : public detail::DeclarationNameExtra,
118 public llvm::FoldingSetNode {
119 friend class clang::DeclarationName;
120 friend class clang::DeclarationNameTable;
121
122 IdentifierInfo *ID;
123
124 /// Extra information associated with this operator name that
125 /// can be used by the front end. All bits are really needed
126 /// so it is not possible to stash something in the low order bits.
127 void *FETokenInfo;
128
129 CXXLiteralOperatorIdName(IdentifierInfo *II)
130 : DeclarationNameExtra(CXXLiteralOperatorName), ID(II),
131 FETokenInfo(nullptr) {}
132
133public:
134 void Profile(llvm::FoldingSetNodeID &FSID) { FSID.AddPointer(ID); }
135};
136
137} // namespace detail
138
139/// The name of a declaration. In the common case, this just stores
140/// an IdentifierInfo pointer to a normal name. However, it also provides
141/// encodings for Objective-C selectors (optimizing zero- and one-argument
142/// selectors, which make up 78% percent of all selectors in Cocoa.h),
143/// special C++ names for constructors, destructors, and conversion functions,
144/// and C++ overloaded operators.
145class DeclarationName {
146 friend class DeclarationNameTable;
147 friend class NamedDecl;
148
149 /// StoredNameKind represent the kind of name that is actually stored in the
150 /// upper bits of the Ptr field. This is only used internally.
151 ///
152 /// NameKind, StoredNameKind, and DeclarationNameExtra::ExtraKind
153 /// must satisfy the following properties. These properties enable
154 /// efficient conversion between the various kinds.
155 ///
156 /// * The first seven enumerators of StoredNameKind must have the same
157 /// numerical value as the first seven enumerators of NameKind.
158 /// This enable efficient conversion between the two enumerations
159 /// in the usual case.
160 ///
161 /// * The enumerations values of DeclarationNameExtra::ExtraKind must start
162 /// at zero, and correspond to the numerical value of the first non-inline
163 /// enumeration values of NameKind minus an offset. This makes conversion
164 /// between DeclarationNameExtra::ExtraKind and NameKind possible with
165 /// a single addition/substraction.
166 ///
167 /// * The enumeration values of Selector::IdentifierInfoFlag must correspond
168 /// to the relevant enumeration values of StoredNameKind.
169 /// More specifically:
170 /// * ZeroArg == StoredObjCZeroArgSelector,
171 /// * OneArg == StoredObjCOneArgSelector,
172 /// * MultiArg == StoredDeclarationNameExtra
173 ///
174 /// * PtrMask must mask the low 3 bits of Ptr.
175 enum StoredNameKind {
176 StoredIdentifier = 0,
177 StoredObjCZeroArgSelector = Selector::ZeroArg,
178 StoredObjCOneArgSelector = Selector::OneArg,
179 StoredCXXConstructorName = 3,
180 StoredCXXDestructorName = 4,
181 StoredCXXConversionFunctionName = 5,
182 StoredCXXOperatorName = 6,
183 StoredDeclarationNameExtra = Selector::MultiArg,
184 PtrMask = 7,
185 UncommonNameKindOffset = 8
186 };
187
188 static_assert(alignof(IdentifierInfo) >= 8 &&
189 alignof(detail::DeclarationNameExtra) >= 8 &&
190 alignof(detail::CXXSpecialNameExtra) >= 8 &&
191 alignof(detail::CXXOperatorIdName) >= 8 &&
192 alignof(detail::CXXDeductionGuideNameExtra) >= 8 &&
193 alignof(detail::CXXLiteralOperatorIdName) >= 8,
194 "The various classes that DeclarationName::Ptr can point to"
195 " must be at least aligned to 8 bytes!");
196
197public:
198 /// The kind of the name stored in this DeclarationName.
199 /// The first 7 enumeration values are stored inline and correspond
200 /// to frequently used kinds. The rest is stored in DeclarationNameExtra
201 /// and correspond to infrequently used kinds.
202 enum NameKind {
203 Identifier = StoredIdentifier,
204 ObjCZeroArgSelector = StoredObjCZeroArgSelector,
205 ObjCOneArgSelector = StoredObjCOneArgSelector,
206 CXXConstructorName = StoredCXXConstructorName,
207 CXXDestructorName = StoredCXXDestructorName,
208 CXXConversionFunctionName = StoredCXXConversionFunctionName,
209 CXXOperatorName = StoredCXXOperatorName,
210 CXXDeductionGuideName = UncommonNameKindOffset +
211 detail::DeclarationNameExtra::CXXDeductionGuideName,
212 CXXLiteralOperatorName =
213 UncommonNameKindOffset +
214 detail::DeclarationNameExtra::CXXLiteralOperatorName,
215 CXXUsingDirective = UncommonNameKindOffset +
216 detail::DeclarationNameExtra::CXXUsingDirective,
217 ObjCMultiArgSelector = UncommonNameKindOffset +
218 detail::DeclarationNameExtra::ObjCMultiArgSelector
219 };
220
221private:
222 /// The lowest three bits of Ptr are used to express what kind of name
223 /// we're actually storing, using the values of StoredNameKind. Depending
224 /// on the kind of name this is, the upper bits of Ptr may have one
225 /// of several different meanings:
226 ///
227 /// StoredIdentifier - The name is a normal identifier, and Ptr is
228 /// a normal IdentifierInfo pointer.
229 ///
230 /// StoredObjCZeroArgSelector - The name is an Objective-C
231 /// selector with zero arguments, and Ptr is an IdentifierInfo
232 /// pointer pointing to the selector name.
233 ///
234 /// StoredObjCOneArgSelector - The name is an Objective-C selector
235 /// with one argument, and Ptr is an IdentifierInfo pointer
236 /// pointing to the selector name.
237 ///
238 /// StoredCXXConstructorName - The name of a C++ constructor,
239 /// Ptr points to a CXXSpecialNameExtra.
240 ///
241 /// StoredCXXDestructorName - The name of a C++ destructor,
242 /// Ptr points to a CXXSpecialNameExtra.
243 ///
244 /// StoredCXXConversionFunctionName - The name of a C++ conversion function,
245 /// Ptr points to a CXXSpecialNameExtra.
246 ///
247 /// StoredCXXOperatorName - The name of an overloaded C++ operator,
248 /// Ptr points to a CXXOperatorIdName.
249 ///
250 /// StoredDeclarationNameExtra - Ptr is actually a pointer to a
251 /// DeclarationNameExtra structure, whose first value will tell us
252 /// whether this is an Objective-C selector, C++ deduction guide,
253 /// C++ literal operator, or C++ using directive.
254 uintptr_t Ptr = 0;
255
256 StoredNameKind getStoredNameKind() const {
257 return static_cast<StoredNameKind>(Ptr & PtrMask);
258 }
259
260 void *getPtr() const { return reinterpret_cast<void *>(Ptr & ~PtrMask); }
261
262 void setPtrAndKind(const void *P, StoredNameKind Kind) {
263 uintptr_t PAsInteger = reinterpret_cast<uintptr_t>(P);
264 assert((Kind & ~PtrMask) == 0 &&(((Kind & ~PtrMask) == 0 && "Invalid StoredNameKind in setPtrAndKind!"
) ? static_cast<void> (0) : __assert_fail ("(Kind & ~PtrMask) == 0 && \"Invalid StoredNameKind in setPtrAndKind!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 265, __PRETTY_FUNCTION__))
265 "Invalid StoredNameKind in setPtrAndKind!")(((Kind & ~PtrMask) == 0 && "Invalid StoredNameKind in setPtrAndKind!"
) ? static_cast<void> (0) : __assert_fail ("(Kind & ~PtrMask) == 0 && \"Invalid StoredNameKind in setPtrAndKind!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 265, __PRETTY_FUNCTION__))
;
266 assert((PAsInteger & PtrMask) == 0 &&(((PAsInteger & PtrMask) == 0 && "Improperly aligned pointer in setPtrAndKind!"
) ? static_cast<void> (0) : __assert_fail ("(PAsInteger & PtrMask) == 0 && \"Improperly aligned pointer in setPtrAndKind!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 267, __PRETTY_FUNCTION__))
267 "Improperly aligned pointer in setPtrAndKind!")(((PAsInteger & PtrMask) == 0 && "Improperly aligned pointer in setPtrAndKind!"
) ? static_cast<void> (0) : __assert_fail ("(PAsInteger & PtrMask) == 0 && \"Improperly aligned pointer in setPtrAndKind!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 267, __PRETTY_FUNCTION__))
;
268 Ptr = PAsInteger | Kind;
269 }
270
271 /// Construct a declaration name from a DeclarationNameExtra.
272 DeclarationName(detail::DeclarationNameExtra *Name) {
273 setPtrAndKind(Name, StoredDeclarationNameExtra);
274 }
275
276 /// Construct a declaration name from a CXXSpecialNameExtra.
277 DeclarationName(detail::CXXSpecialNameExtra *Name,
278 StoredNameKind StoredKind) {
279 assert((StoredKind == StoredCXXConstructorName ||(((StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName
|| StoredKind == StoredCXXConversionFunctionName) &&
"Invalid StoredNameKind when constructing a DeclarationName"
" from a CXXSpecialNameExtra!") ? static_cast<void> (0
) : __assert_fail ("(StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName || StoredKind == StoredCXXConversionFunctionName) && \"Invalid StoredNameKind when constructing a DeclarationName\" \" from a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 283, __PRETTY_FUNCTION__))
280 StoredKind == StoredCXXDestructorName ||(((StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName
|| StoredKind == StoredCXXConversionFunctionName) &&
"Invalid StoredNameKind when constructing a DeclarationName"
" from a CXXSpecialNameExtra!") ? static_cast<void> (0
) : __assert_fail ("(StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName || StoredKind == StoredCXXConversionFunctionName) && \"Invalid StoredNameKind when constructing a DeclarationName\" \" from a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 283, __PRETTY_FUNCTION__))
281 StoredKind == StoredCXXConversionFunctionName) &&(((StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName
|| StoredKind == StoredCXXConversionFunctionName) &&
"Invalid StoredNameKind when constructing a DeclarationName"
" from a CXXSpecialNameExtra!") ? static_cast<void> (0
) : __assert_fail ("(StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName || StoredKind == StoredCXXConversionFunctionName) && \"Invalid StoredNameKind when constructing a DeclarationName\" \" from a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 283, __PRETTY_FUNCTION__))
282 "Invalid StoredNameKind when constructing a DeclarationName"(((StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName
|| StoredKind == StoredCXXConversionFunctionName) &&
"Invalid StoredNameKind when constructing a DeclarationName"
" from a CXXSpecialNameExtra!") ? static_cast<void> (0
) : __assert_fail ("(StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName || StoredKind == StoredCXXConversionFunctionName) && \"Invalid StoredNameKind when constructing a DeclarationName\" \" from a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 283, __PRETTY_FUNCTION__))
283 " from a CXXSpecialNameExtra!")(((StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName
|| StoredKind == StoredCXXConversionFunctionName) &&
"Invalid StoredNameKind when constructing a DeclarationName"
" from a CXXSpecialNameExtra!") ? static_cast<void> (0
) : __assert_fail ("(StoredKind == StoredCXXConstructorName || StoredKind == StoredCXXDestructorName || StoredKind == StoredCXXConversionFunctionName) && \"Invalid StoredNameKind when constructing a DeclarationName\" \" from a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 283, __PRETTY_FUNCTION__))
;
284 setPtrAndKind(Name, StoredKind);
285 }
286
287 /// Construct a DeclarationName from a CXXOperatorIdName.
288 DeclarationName(detail::CXXOperatorIdName *Name) {
289 setPtrAndKind(Name, StoredCXXOperatorName);
290 }
291
292 /// Assert that the stored pointer points to an IdentifierInfo and return it.
293 IdentifierInfo *castAsIdentifierInfo() const {
294 assert((getStoredNameKind() == StoredIdentifier) &&(((getStoredNameKind() == StoredIdentifier) && "DeclarationName does not store an IdentifierInfo!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredIdentifier) && \"DeclarationName does not store an IdentifierInfo!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 295, __PRETTY_FUNCTION__))
295 "DeclarationName does not store an IdentifierInfo!")(((getStoredNameKind() == StoredIdentifier) && "DeclarationName does not store an IdentifierInfo!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredIdentifier) && \"DeclarationName does not store an IdentifierInfo!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 295, __PRETTY_FUNCTION__))
;
296 return static_cast<IdentifierInfo *>(getPtr());
297 }
298
299 /// Assert that the stored pointer points to a DeclarationNameExtra
300 /// and return it.
301 detail::DeclarationNameExtra *castAsExtra() const {
302 assert((getStoredNameKind() == StoredDeclarationNameExtra) &&(((getStoredNameKind() == StoredDeclarationNameExtra) &&
"DeclarationName does not store an Extra structure!") ? static_cast
<void> (0) : __assert_fail ("(getStoredNameKind() == StoredDeclarationNameExtra) && \"DeclarationName does not store an Extra structure!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 303, __PRETTY_FUNCTION__))
303 "DeclarationName does not store an Extra structure!")(((getStoredNameKind() == StoredDeclarationNameExtra) &&
"DeclarationName does not store an Extra structure!") ? static_cast
<void> (0) : __assert_fail ("(getStoredNameKind() == StoredDeclarationNameExtra) && \"DeclarationName does not store an Extra structure!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 303, __PRETTY_FUNCTION__))
;
304 return static_cast<detail::DeclarationNameExtra *>(getPtr());
305 }
306
307 /// Assert that the stored pointer points to a CXXSpecialNameExtra
308 /// and return it.
309 detail::CXXSpecialNameExtra *castAsCXXSpecialNameExtra() const {
310 assert((getStoredNameKind() == StoredCXXConstructorName ||(((getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind
() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName
) && "DeclarationName does not store a CXXSpecialNameExtra!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName) && \"DeclarationName does not store a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 313, __PRETTY_FUNCTION__))
311 getStoredNameKind() == StoredCXXDestructorName ||(((getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind
() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName
) && "DeclarationName does not store a CXXSpecialNameExtra!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName) && \"DeclarationName does not store a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 313, __PRETTY_FUNCTION__))
312 getStoredNameKind() == StoredCXXConversionFunctionName) &&(((getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind
() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName
) && "DeclarationName does not store a CXXSpecialNameExtra!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName) && \"DeclarationName does not store a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 313, __PRETTY_FUNCTION__))
313 "DeclarationName does not store a CXXSpecialNameExtra!")(((getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind
() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName
) && "DeclarationName does not store a CXXSpecialNameExtra!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredCXXConstructorName || getStoredNameKind() == StoredCXXDestructorName || getStoredNameKind() == StoredCXXConversionFunctionName) && \"DeclarationName does not store a CXXSpecialNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 313, __PRETTY_FUNCTION__))
;
314 return static_cast<detail::CXXSpecialNameExtra *>(getPtr());
315 }
316
317 /// Assert that the stored pointer points to a CXXOperatorIdName
318 /// and return it.
319 detail::CXXOperatorIdName *castAsCXXOperatorIdName() const {
320 assert((getStoredNameKind() == StoredCXXOperatorName) &&(((getStoredNameKind() == StoredCXXOperatorName) && "DeclarationName does not store a CXXOperatorIdName!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredCXXOperatorName) && \"DeclarationName does not store a CXXOperatorIdName!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 321, __PRETTY_FUNCTION__))
321 "DeclarationName does not store a CXXOperatorIdName!")(((getStoredNameKind() == StoredCXXOperatorName) && "DeclarationName does not store a CXXOperatorIdName!"
) ? static_cast<void> (0) : __assert_fail ("(getStoredNameKind() == StoredCXXOperatorName) && \"DeclarationName does not store a CXXOperatorIdName!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 321, __PRETTY_FUNCTION__))
;
322 return static_cast<detail::CXXOperatorIdName *>(getPtr());
323 }
324
325 /// Assert that the stored pointer points to a CXXDeductionGuideNameExtra
326 /// and return it.
327 detail::CXXDeductionGuideNameExtra *castAsCXXDeductionGuideNameExtra() const {
328 assert(getNameKind() == CXXDeductionGuideName &&((getNameKind() == CXXDeductionGuideName && "DeclarationName does not store a CXXDeductionGuideNameExtra!"
) ? static_cast<void> (0) : __assert_fail ("getNameKind() == CXXDeductionGuideName && \"DeclarationName does not store a CXXDeductionGuideNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 329, __PRETTY_FUNCTION__))
329 "DeclarationName does not store a CXXDeductionGuideNameExtra!")((getNameKind() == CXXDeductionGuideName && "DeclarationName does not store a CXXDeductionGuideNameExtra!"
) ? static_cast<void> (0) : __assert_fail ("getNameKind() == CXXDeductionGuideName && \"DeclarationName does not store a CXXDeductionGuideNameExtra!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 329, __PRETTY_FUNCTION__))
;
330 return static_cast<detail::CXXDeductionGuideNameExtra *>(getPtr());
331 }
332
333 /// Assert that the stored pointer points to a CXXLiteralOperatorIdName
334 /// and return it.
335 detail::CXXLiteralOperatorIdName *castAsCXXLiteralOperatorIdName() const {
336 assert(getNameKind() == CXXLiteralOperatorName &&((getNameKind() == CXXLiteralOperatorName && "DeclarationName does not store a CXXLiteralOperatorIdName!"
) ? static_cast<void> (0) : __assert_fail ("getNameKind() == CXXLiteralOperatorName && \"DeclarationName does not store a CXXLiteralOperatorIdName!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 337, __PRETTY_FUNCTION__))
337 "DeclarationName does not store a CXXLiteralOperatorIdName!")((getNameKind() == CXXLiteralOperatorName && "DeclarationName does not store a CXXLiteralOperatorIdName!"
) ? static_cast<void> (0) : __assert_fail ("getNameKind() == CXXLiteralOperatorName && \"DeclarationName does not store a CXXLiteralOperatorIdName!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include/clang/AST/DeclarationName.h"
, 337, __PRETTY_FUNCTION__))
;
338 return static_cast<detail::CXXLiteralOperatorIdName *>(getPtr());
339 }
340
341 /// Get and set the FETokenInfo in the less common cases where the
342 /// declaration name do not point to an identifier.
343 void *getFETokenInfoSlow() const;
344 void setFETokenInfoSlow(void *T);
345
346public:
347 /// Construct an empty declaration name.
348 DeclarationName() { setPtrAndKind(nullptr, StoredIdentifier); }
349
350 /// Construct a declaration name from an IdentifierInfo *.
351 DeclarationName(const IdentifierInfo *II) {
352 setPtrAndKind(II, StoredIdentifier);
353 }
354
355 /// Construct a declaration name from an Objective-C selector.
356 DeclarationName(Selector Sel) : Ptr(Sel.InfoPtr) {}
357
358 /// Returns the name for all C++ using-directives.
359 static DeclarationName getUsingDirectiveName() {
360 // Single instance of DeclarationNameExtra for using-directive
361 static detail::DeclarationNameExtra UDirExtra(
362 detail::DeclarationNameExtra::CXXUsingDirective);
363 return DeclarationName(&UDirExtra);
364 }
365
366 /// Evaluates true when this declaration name is non-empty.
367 explicit operator bool() const {
368 return getPtr() || (getStoredNameKind() != StoredIdentifier);
369 }
370
371 /// Evaluates true when this declaration name is empty.
372 bool isEmpty() const { return !*this; }
373
374 /// Predicate functions for querying what type of name this is.
375 bool isIdentifier() const { return getStoredNameKind() == StoredIdentifier; }
376 bool isObjCZeroArgSelector() const {
377 return getStored