File: | clang/lib/AST/ItaniumMangle.cpp |
Warning: | line 292, column 28 Called C++ object pointer is null |
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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 | ||||
38 | using namespace clang; | |||
39 | ||||
40 | namespace { | |||
41 | ||||
42 | /// Retrieve the declaration context that should be used when mangling the given | |||
43 | /// declaration. | |||
44 | static 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 | ||||
82 | static const DeclContext *getEffectiveParentContext(const DeclContext *DC) { | |||
83 | return getEffectiveDeclContext(cast<Decl>(DC)); | |||
84 | } | |||
85 | ||||
86 | static bool isLocalContainerContext(const DeclContext *DC) { | |||
87 | return isa<FunctionDecl>(DC) || isa<ObjCMethodDecl>(DC) || isa<BlockDecl>(DC); | |||
88 | } | |||
89 | ||||
90 | static 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 | ||||
101 | static const FunctionDecl *getStructor(const FunctionDecl *fn) { | |||
102 | if (const FunctionTemplateDecl *ftd = fn->getPrimaryTemplate()) | |||
103 | return ftd->getTemplatedDecl(); | |||
104 | ||||
105 | return fn; | |||
106 | } | |||
107 | ||||
108 | static const NamedDecl *getStructor(const NamedDecl *decl) { | |||
109 | const FunctionDecl *fn = dyn_cast_or_null<FunctionDecl>(decl); | |||
110 | return (fn ? getStructor(fn) : decl); | |||
111 | } | |||
112 | ||||
113 | static 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 | ||||
121 | static const unsigned UnknownArity = ~0U; | |||
122 | ||||
123 | class 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 | ||||
128 | public: | |||
129 | explicit ItaniumMangleContextImpl(ASTContext &Context, | |||
130 | DiagnosticsEngine &Diags) | |||
131 | : ItaniumMangleContext(Context, Diags) {} | |||
132 | ||||
133 | /// @name Mangler Entry Points | |||
134 | /// @{ | |||
135 | ||||
136 | bool shouldMangleCXXName(const NamedDecl *D) override; | |||
137 | bool shouldMangleStringLiteral(const StringLiteral *) override { | |||
138 | return false; | |||
139 | } | |||
140 | void mangleCXXName(GlobalDecl GD, raw_ostream &) override; | |||
141 | void mangleThunk(const CXXMethodDecl *MD, const ThunkInfo &Thunk, | |||
142 | raw_ostream &) override; | |||
143 | void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type, | |||
144 | const ThisAdjustment &ThisAdjustment, | |||
145 | raw_ostream &) override; | |||
146 | void mangleReferenceTemporary(const VarDecl *D, unsigned ManglingNumber, | |||
147 | raw_ostream &) override; | |||
148 | void mangleCXXVTable(const CXXRecordDecl *RD, raw_ostream &) override; | |||
149 | void mangleCXXVTT(const CXXRecordDecl *RD, raw_ostream &) override; | |||
150 | void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset, | |||
151 | const CXXRecordDecl *Type, raw_ostream &) override; | |||
152 | void mangleCXXRTTI(QualType T, raw_ostream &) override; | |||
153 | void mangleCXXRTTIName(QualType T, raw_ostream &) override; | |||
154 | void mangleTypeName(QualType T, raw_ostream &) override; | |||
155 | ||||
156 | void mangleCXXCtorComdat(const CXXConstructorDecl *D, raw_ostream &) override; | |||
157 | void mangleCXXDtorComdat(const CXXDestructorDecl *D, raw_ostream &) override; | |||
158 | void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &) override; | |||
159 | void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override; | |||
160 | void mangleDynamicAtExitDestructor(const VarDecl *D, | |||
161 | raw_ostream &Out) override; | |||
162 | void mangleDynamicStermFinalizer(const VarDecl *D, raw_ostream &Out) override; | |||
163 | void mangleSEHFilterExpression(const NamedDecl *EnclosingDecl, | |||
164 | raw_ostream &Out) override; | |||
165 | void mangleSEHFinallyBlock(const NamedDecl *EnclosingDecl, | |||
166 | raw_ostream &Out) override; | |||
167 | void mangleItaniumThreadLocalInit(const VarDecl *D, raw_ostream &) override; | |||
168 | void mangleItaniumThreadLocalWrapper(const VarDecl *D, | |||
169 | raw_ostream &) override; | |||
170 | ||||
171 | void mangleStringLiteral(const StringLiteral *, raw_ostream &) override; | |||
172 | ||||
173 | void mangleLambdaSig(const CXXRecordDecl *Lambda, raw_ostream &) override; | |||
174 | ||||
175 | bool getNextDiscriminator(const NamedDecl *ND, unsigned &disc) { | |||
176 | // Lambda closure types are already numbered. | |||
177 | if (isLambda(ND)) | |||
178 | return false; | |||
179 | ||||
180 | // Anonymous tags are already numbered. | |||
181 | if (const TagDecl *Tag = dyn_cast<TagDecl>(ND)) { | |||
182 | if (Tag->getName().empty() && !Tag->getTypedefNameForAnonDecl()) | |||
183 | return false; | |||
184 | } | |||
185 | ||||
186 | // Use the canonical number for externally visible decls. | |||
187 | if (ND->isExternallyVisible()) { | |||
188 | unsigned discriminator = getASTContext().getManglingNumber(ND); | |||
189 | if (discriminator == 1) | |||
190 | return false; | |||
191 | disc = discriminator - 2; | |||
192 | return true; | |||
193 | } | |||
194 | ||||
195 | // Make up a reasonable number for internal decls. | |||
196 | unsigned &discriminator = Uniquifier[ND]; | |||
197 | if (!discriminator) { | |||
198 | const DeclContext *DC = getEffectiveDeclContext(ND); | |||
199 | discriminator = ++Discriminator[std::make_pair(DC, ND->getIdentifier())]; | |||
200 | } | |||
201 | if (discriminator == 1) | |||
202 | return false; | |||
203 | disc = discriminator-2; | |||
204 | return true; | |||
205 | } | |||
206 | /// @} | |||
207 | }; | |||
208 | ||||
209 | /// Manage the mangling of a single name. | |||
210 | class CXXNameMangler { | |||
211 | ItaniumMangleContextImpl &Context; | |||
212 | raw_ostream &Out; | |||
213 | bool NullOut = false; | |||
214 | /// In the "DisableDerivedAbiTags" mode derived ABI tags are not calculated. | |||
215 | /// This mode is used when mangler creates another mangler recursively to | |||
216 | /// calculate ABI tags for the function return value or the variable type. | |||
217 | /// Also it is required to avoid infinite recursion in some cases. | |||
218 | bool DisableDerivedAbiTags = false; | |||
219 | ||||
220 | /// The "structor" is the top-level declaration being mangled, if | |||
221 | /// that's not a template specialization; otherwise it's the pattern | |||
222 | /// for that specialization. | |||
223 | const NamedDecl *Structor; | |||
224 | unsigned StructorType; | |||
225 | ||||
226 | /// The next substitution sequence number. | |||
227 | unsigned SeqID; | |||
228 | ||||
229 | class FunctionTypeDepthState { | |||
230 | unsigned Bits; | |||
231 | ||||
232 | enum { InResultTypeMask = 1 }; | |||
233 | ||||
234 | public: | |||
235 | FunctionTypeDepthState() : Bits(0) {} | |||
236 | ||||
237 | /// The number of function types we're inside. | |||
238 | unsigned getDepth() const { | |||
239 | return Bits >> 1; | |||
240 | } | |||
241 | ||||
242 | /// True if we're in the return type of the innermost function type. | |||
243 | bool isInResultType() const { | |||
244 | return Bits & InResultTypeMask; | |||
245 | } | |||
246 | ||||
247 | FunctionTypeDepthState push() { | |||
248 | FunctionTypeDepthState tmp = *this; | |||
249 | Bits = (Bits & ~InResultTypeMask) + 2; | |||
250 | return tmp; | |||
251 | } | |||
252 | ||||
253 | void enterResultType() { | |||
254 | Bits |= InResultTypeMask; | |||
255 | } | |||
256 | ||||
257 | void leaveResultType() { | |||
258 | Bits &= ~InResultTypeMask; | |||
259 | } | |||
260 | ||||
261 | void pop(FunctionTypeDepthState saved) { | |||
262 | assert(getDepth() == saved.getDepth() + 1)((getDepth() == saved.getDepth() + 1) ? static_cast<void> (0) : __assert_fail ("getDepth() == saved.getDepth() + 1", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 262, __PRETTY_FUNCTION__)); | |||
263 | Bits = saved.Bits; | |||
264 | } | |||
265 | ||||
266 | } FunctionTypeDepth; | |||
267 | ||||
268 | // abi_tag is a gcc attribute, taking one or more strings called "tags". | |||
269 | // The goal is to annotate against which version of a library an object was | |||
270 | // built and to be able to provide backwards compatibility ("dual abi"). | |||
271 | // For more information see docs/ItaniumMangleAbiTags.rst. | |||
272 | typedef SmallVector<StringRef, 4> AbiTagList; | |||
273 | ||||
274 | // State to gather all implicit and explicit tags used in a mangled name. | |||
275 | // Must always have an instance of this while emitting any name to keep | |||
276 | // track. | |||
277 | class AbiTagState final { | |||
278 | public: | |||
279 | explicit AbiTagState(AbiTagState *&Head) : LinkHead(Head) { | |||
280 | Parent = LinkHead; | |||
281 | LinkHead = this; | |||
282 | } | |||
283 | ||||
284 | // No copy, no move. | |||
285 | AbiTagState(const AbiTagState &) = delete; | |||
286 | AbiTagState &operator=(const AbiTagState &) = delete; | |||
287 | ||||
288 | ~AbiTagState() { pop(); } | |||
289 | ||||
290 | void write(raw_ostream &Out, const NamedDecl *ND, | |||
291 | const AbiTagList *AdditionalAbiTags) { | |||
292 | ND = cast<NamedDecl>(ND->getCanonicalDecl()); | |||
| ||||
293 | if (!isa<FunctionDecl>(ND) && !isa<VarDecl>(ND)) { | |||
294 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 296, __PRETTY_FUNCTION__)) | |||
295 | !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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 296, __PRETTY_FUNCTION__)) | |||
296 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 296, __PRETTY_FUNCTION__)); | |||
297 | if (const auto *NS = dyn_cast<NamespaceDecl>(ND)) { | |||
298 | if (const auto *AbiTag = NS->getAttr<AbiTagAttr>()) { | |||
299 | UsedAbiTags.insert(UsedAbiTags.end(), AbiTag->tags().begin(), | |||
300 | AbiTag->tags().end()); | |||
301 | } | |||
302 | // Don't emit abi tags for namespaces. | |||
303 | return; | |||
304 | } | |||
305 | } | |||
306 | ||||
307 | AbiTagList TagList; | |||
308 | if (const auto *AbiTag = ND->getAttr<AbiTagAttr>()) { | |||
309 | UsedAbiTags.insert(UsedAbiTags.end(), AbiTag->tags().begin(), | |||
310 | AbiTag->tags().end()); | |||
311 | TagList.insert(TagList.end(), AbiTag->tags().begin(), | |||
312 | AbiTag->tags().end()); | |||
313 | } | |||
314 | ||||
315 | if (AdditionalAbiTags) { | |||
316 | UsedAbiTags.insert(UsedAbiTags.end(), AdditionalAbiTags->begin(), | |||
317 | AdditionalAbiTags->end()); | |||
318 | TagList.insert(TagList.end(), AdditionalAbiTags->begin(), | |||
319 | AdditionalAbiTags->end()); | |||
320 | } | |||
321 | ||||
322 | llvm::sort(TagList); | |||
323 | TagList.erase(std::unique(TagList.begin(), TagList.end()), TagList.end()); | |||
324 | ||||
325 | writeSortedUniqueAbiTags(Out, TagList); | |||
326 | } | |||
327 | ||||
328 | const AbiTagList &getUsedAbiTags() const { return UsedAbiTags; } | |||
329 | void setUsedAbiTags(const AbiTagList &AbiTags) { | |||
330 | UsedAbiTags = AbiTags; | |||
331 | } | |||
332 | ||||
333 | const AbiTagList &getEmittedAbiTags() const { | |||
334 | return EmittedAbiTags; | |||
335 | } | |||
336 | ||||
337 | const AbiTagList &getSortedUniqueUsedAbiTags() { | |||
338 | llvm::sort(UsedAbiTags); | |||
339 | UsedAbiTags.erase(std::unique(UsedAbiTags.begin(), UsedAbiTags.end()), | |||
340 | UsedAbiTags.end()); | |||
341 | return UsedAbiTags; | |||
342 | } | |||
343 | ||||
344 | private: | |||
345 | //! All abi tags used implicitly or explicitly. | |||
346 | AbiTagList UsedAbiTags; | |||
347 | //! All explicit abi tags (i.e. not from namespace). | |||
348 | AbiTagList EmittedAbiTags; | |||
349 | ||||
350 | AbiTagState *&LinkHead; | |||
351 | AbiTagState *Parent = nullptr; | |||
352 | ||||
353 | void pop() { | |||
354 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 355, __PRETTY_FUNCTION__)) | |||
355 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 355, __PRETTY_FUNCTION__)); | |||
356 | if (Parent) { | |||
357 | Parent->UsedAbiTags.insert(Parent->UsedAbiTags.end(), | |||
358 | UsedAbiTags.begin(), UsedAbiTags.end()); | |||
359 | Parent->EmittedAbiTags.insert(Parent->EmittedAbiTags.end(), | |||
360 | EmittedAbiTags.begin(), | |||
361 | EmittedAbiTags.end()); | |||
362 | } | |||
363 | LinkHead = Parent; | |||
364 | } | |||
365 | ||||
366 | void writeSortedUniqueAbiTags(raw_ostream &Out, const AbiTagList &AbiTags) { | |||
367 | for (const auto &Tag : AbiTags) { | |||
368 | EmittedAbiTags.push_back(Tag); | |||
369 | Out << "B"; | |||
370 | Out << Tag.size(); | |||
371 | Out << Tag; | |||
372 | } | |||
373 | } | |||
374 | }; | |||
375 | ||||
376 | AbiTagState *AbiTags = nullptr; | |||
377 | AbiTagState AbiTagsRoot; | |||
378 | ||||
379 | llvm::DenseMap<uintptr_t, unsigned> Substitutions; | |||
380 | llvm::DenseMap<StringRef, unsigned> ModuleSubstitutions; | |||
381 | ||||
382 | ASTContext &getASTContext() const { return Context.getASTContext(); } | |||
383 | ||||
384 | public: | |||
385 | CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_, | |||
386 | const NamedDecl *D = nullptr, bool NullOut_ = false) | |||
387 | : Context(C), Out(Out_), NullOut(NullOut_), Structor(getStructor(D)), | |||
388 | StructorType(0), SeqID(0), AbiTagsRoot(AbiTags) { | |||
389 | // These can't be mangled without a ctor type or dtor type. | |||
390 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 391, __PRETTY_FUNCTION__)) | |||
391 | !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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 391, __PRETTY_FUNCTION__)); | |||
392 | } | |||
393 | CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_, | |||
394 | const CXXConstructorDecl *D, CXXCtorType Type) | |||
395 | : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type), | |||
396 | SeqID(0), AbiTagsRoot(AbiTags) { } | |||
397 | CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_, | |||
398 | const CXXDestructorDecl *D, CXXDtorType Type) | |||
399 | : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type), | |||
400 | SeqID(0), AbiTagsRoot(AbiTags) { } | |||
401 | ||||
402 | CXXNameMangler(CXXNameMangler &Outer, raw_ostream &Out_) | |||
403 | : Context(Outer.Context), Out(Out_), NullOut(false), | |||
404 | Structor(Outer.Structor), StructorType(Outer.StructorType), | |||
405 | SeqID(Outer.SeqID), FunctionTypeDepth(Outer.FunctionTypeDepth), | |||
406 | AbiTagsRoot(AbiTags), Substitutions(Outer.Substitutions) {} | |||
407 | ||||
408 | CXXNameMangler(CXXNameMangler &Outer, llvm::raw_null_ostream &Out_) | |||
409 | : Context(Outer.Context), Out(Out_), NullOut(true), | |||
410 | Structor(Outer.Structor), StructorType(Outer.StructorType), | |||
411 | SeqID(Outer.SeqID), FunctionTypeDepth(Outer.FunctionTypeDepth), | |||
412 | AbiTagsRoot(AbiTags), Substitutions(Outer.Substitutions) {} | |||
413 | ||||
414 | raw_ostream &getStream() { return Out; } | |||
415 | ||||
416 | void disableDerivedAbiTags() { DisableDerivedAbiTags = true; } | |||
417 | static bool shouldHaveAbiTags(ItaniumMangleContextImpl &C, const VarDecl *VD); | |||
418 | ||||
419 | void mangle(GlobalDecl GD); | |||
420 | void mangleCallOffset(int64_t NonVirtual, int64_t Virtual); | |||
421 | void mangleNumber(const llvm::APSInt &I); | |||
422 | void mangleNumber(int64_t Number); | |||
423 | void mangleFloat(const llvm::APFloat &F); | |||
424 | void mangleFunctionEncoding(GlobalDecl GD); | |||
425 | void mangleSeqID(unsigned SeqID); | |||
426 | void mangleName(GlobalDecl GD); | |||
427 | void mangleType(QualType T); | |||
428 | void mangleNameOrStandardSubstitution(const NamedDecl *ND); | |||
429 | void mangleLambdaSig(const CXXRecordDecl *Lambda); | |||
430 | ||||
431 | private: | |||
432 | ||||
433 | bool mangleSubstitution(const NamedDecl *ND); | |||
434 | bool mangleSubstitution(QualType T); | |||
435 | bool mangleSubstitution(TemplateName Template); | |||
436 | bool mangleSubstitution(uintptr_t Ptr); | |||
437 | ||||
438 | void mangleExistingSubstitution(TemplateName name); | |||
439 | ||||
440 | bool mangleStandardSubstitution(const NamedDecl *ND); | |||
441 | ||||
442 | void addSubstitution(const NamedDecl *ND) { | |||
443 | ND = cast<NamedDecl>(ND->getCanonicalDecl()); | |||
444 | ||||
445 | addSubstitution(reinterpret_cast<uintptr_t>(ND)); | |||
446 | } | |||
447 | void addSubstitution(QualType T); | |||
448 | void addSubstitution(TemplateName Template); | |||
449 | void addSubstitution(uintptr_t Ptr); | |||
450 | // Destructive copy substitutions from other mangler. | |||
451 | void extendSubstitutions(CXXNameMangler* Other); | |||
452 | ||||
453 | void mangleUnresolvedPrefix(NestedNameSpecifier *qualifier, | |||
454 | bool recursive = false); | |||
455 | void mangleUnresolvedName(NestedNameSpecifier *qualifier, | |||
456 | DeclarationName name, | |||
457 | const TemplateArgumentLoc *TemplateArgs, | |||
458 | unsigned NumTemplateArgs, | |||
459 | unsigned KnownArity = UnknownArity); | |||
460 | ||||
461 | void mangleFunctionEncodingBareType(const FunctionDecl *FD); | |||
462 | ||||
463 | void mangleNameWithAbiTags(GlobalDecl GD, | |||
464 | const AbiTagList *AdditionalAbiTags); | |||
465 | void mangleModuleName(const Module *M); | |||
466 | void mangleModuleNamePrefix(StringRef Name); | |||
467 | void mangleTemplateName(const TemplateDecl *TD, | |||
468 | const TemplateArgument *TemplateArgs, | |||
469 | unsigned NumTemplateArgs); | |||
470 | void mangleUnqualifiedName(GlobalDecl GD, | |||
471 | const AbiTagList *AdditionalAbiTags) { | |||
472 | mangleUnqualifiedName(GD, cast<NamedDecl>(GD.getDecl())->getDeclName(), UnknownArity, | |||
473 | AdditionalAbiTags); | |||
474 | } | |||
475 | void mangleUnqualifiedName(GlobalDecl GD, DeclarationName Name, | |||
476 | unsigned KnownArity, | |||
477 | const AbiTagList *AdditionalAbiTags); | |||
478 | void mangleUnscopedName(GlobalDecl GD, | |||
479 | const AbiTagList *AdditionalAbiTags); | |||
480 | void mangleUnscopedTemplateName(GlobalDecl GD, | |||
481 | const AbiTagList *AdditionalAbiTags); | |||
482 | void mangleSourceName(const IdentifierInfo *II); | |||
483 | void mangleRegCallName(const IdentifierInfo *II); | |||
484 | void mangleDeviceStubName(const IdentifierInfo *II); | |||
485 | void mangleSourceNameWithAbiTags( | |||
486 | const NamedDecl *ND, const AbiTagList *AdditionalAbiTags = nullptr); | |||
487 | void mangleLocalName(GlobalDecl GD, | |||
488 | const AbiTagList *AdditionalAbiTags); | |||
489 | void mangleBlockForPrefix(const BlockDecl *Block); | |||
490 | void mangleUnqualifiedBlock(const BlockDecl *Block); | |||
491 | void mangleTemplateParamDecl(const NamedDecl *Decl); | |||
492 | void mangleLambda(const CXXRecordDecl *Lambda); | |||
493 | void mangleNestedName(GlobalDecl GD, const DeclContext *DC, | |||
494 | const AbiTagList *AdditionalAbiTags, | |||
495 | bool NoFunction=false); | |||
496 | void mangleNestedName(const TemplateDecl *TD, | |||
497 | const TemplateArgument *TemplateArgs, | |||
498 | unsigned NumTemplateArgs); | |||
499 | void manglePrefix(NestedNameSpecifier *qualifier); | |||
500 | void manglePrefix(const DeclContext *DC, bool NoFunction=false); | |||
501 | void manglePrefix(QualType type); | |||
502 | void mangleTemplatePrefix(GlobalDecl GD, bool NoFunction=false); | |||
503 | void mangleTemplatePrefix(TemplateName Template); | |||
504 | bool mangleUnresolvedTypeOrSimpleId(QualType DestroyedType, | |||
505 | StringRef Prefix = ""); | |||
506 | void mangleOperatorName(DeclarationName Name, unsigned Arity); | |||
507 | void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity); | |||
508 | void mangleVendorQualifier(StringRef qualifier); | |||
509 | void mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST = nullptr); | |||
510 | void mangleRefQualifier(RefQualifierKind RefQualifier); | |||
511 | ||||
512 | void mangleObjCMethodName(const ObjCMethodDecl *MD); | |||
513 | ||||
514 | // Declare manglers for every type class. | |||
515 | #define ABSTRACT_TYPE(CLASS, PARENT) | |||
516 | #define NON_CANONICAL_TYPE(CLASS, PARENT) | |||
517 | #define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T); | |||
518 | #include "clang/AST/TypeNodes.inc" | |||
519 | ||||
520 | void mangleType(const TagType*); | |||
521 | void mangleType(TemplateName); | |||
522 | static StringRef getCallingConvQualifierName(CallingConv CC); | |||
523 | void mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo info); | |||
524 | void mangleExtFunctionInfo(const FunctionType *T); | |||
525 | void mangleBareFunctionType(const FunctionProtoType *T, bool MangleReturnType, | |||
526 | const FunctionDecl *FD = nullptr); | |||
527 | void mangleNeonVectorType(const VectorType *T); | |||
528 | void mangleNeonVectorType(const DependentVectorType *T); | |||
529 | void mangleAArch64NeonVectorType(const VectorType *T); | |||
530 | void mangleAArch64NeonVectorType(const DependentVectorType *T); | |||
531 | void mangleAArch64FixedSveVectorType(const VectorType *T); | |||
532 | void mangleAArch64FixedSveVectorType(const DependentVectorType *T); | |||
533 | ||||
534 | void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value); | |||
535 | void mangleFloatLiteral(QualType T, const llvm::APFloat &V); | |||
536 | void mangleFixedPointLiteral(); | |||
537 | void mangleNullPointer(QualType T); | |||
538 | ||||
539 | void mangleMemberExprBase(const Expr *base, bool isArrow); | |||
540 | void mangleMemberExpr(const Expr *base, bool isArrow, | |||
541 | NestedNameSpecifier *qualifier, | |||
542 | NamedDecl *firstQualifierLookup, | |||
543 | DeclarationName name, | |||
544 | const TemplateArgumentLoc *TemplateArgs, | |||
545 | unsigned NumTemplateArgs, | |||
546 | unsigned knownArity); | |||
547 | void mangleCastExpression(const Expr *E, StringRef CastEncoding); | |||
548 | void mangleInitListElements(const InitListExpr *InitList); | |||
549 | void mangleDeclRefExpr(const NamedDecl *D); | |||
550 | void mangleExpression(const Expr *E, unsigned Arity = UnknownArity); | |||
551 | void mangleCXXCtorType(CXXCtorType T, const CXXRecordDecl *InheritedFrom); | |||
552 | void mangleCXXDtorType(CXXDtorType T); | |||
553 | ||||
554 | void mangleTemplateArgs(TemplateName TN, | |||
555 | const TemplateArgumentLoc *TemplateArgs, | |||
556 | unsigned NumTemplateArgs); | |||
557 | void mangleTemplateArgs(TemplateName TN, const TemplateArgument *TemplateArgs, | |||
558 | unsigned NumTemplateArgs); | |||
559 | void mangleTemplateArgs(TemplateName TN, const TemplateArgumentList &AL); | |||
560 | void mangleTemplateArg(TemplateArgument A, bool NeedExactType); | |||
561 | void mangleValueInTemplateArg(QualType T, const APValue &V, bool TopLevel, | |||
562 | bool NeedExactType = false); | |||
563 | ||||
564 | void mangleTemplateParameter(unsigned Depth, unsigned Index); | |||
565 | ||||
566 | void mangleFunctionParam(const ParmVarDecl *parm); | |||
567 | ||||
568 | void writeAbiTags(const NamedDecl *ND, | |||
569 | const AbiTagList *AdditionalAbiTags); | |||
570 | ||||
571 | // Returns sorted unique list of ABI tags. | |||
572 | AbiTagList makeFunctionReturnTypeTags(const FunctionDecl *FD); | |||
573 | // Returns sorted unique list of ABI tags. | |||
574 | AbiTagList makeVariableTypeTags(const VarDecl *VD); | |||
575 | }; | |||
576 | ||||
577 | } | |||
578 | ||||
579 | bool ItaniumMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) { | |||
580 | const FunctionDecl *FD = dyn_cast<FunctionDecl>(D); | |||
581 | if (FD) { | |||
582 | LanguageLinkage L = FD->getLanguageLinkage(); | |||
583 | // Overloadable functions need mangling. | |||
584 | if (FD->hasAttr<OverloadableAttr>()) | |||
585 | return true; | |||
586 | ||||
587 | // "main" is not mangled. | |||
588 | if (FD->isMain()) | |||
589 | return false; | |||
590 | ||||
591 | // The Windows ABI expects that we would never mangle "typical" | |||
592 | // user-defined entry points regardless of visibility or freestanding-ness. | |||
593 | // | |||
594 | // N.B. This is distinct from asking about "main". "main" has a lot of | |||
595 | // special rules associated with it in the standard while these | |||
596 | // user-defined entry points are outside of the purview of the standard. | |||
597 | // For example, there can be only one definition for "main" in a standards | |||
598 | // compliant program; however nothing forbids the existence of wmain and | |||
599 | // WinMain in the same translation unit. | |||
600 | if (FD->isMSVCRTEntryPoint()) | |||
601 | return false; | |||
602 | ||||
603 | // C++ functions and those whose names are not a simple identifier need | |||
604 | // mangling. | |||
605 | if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage) | |||
606 | return true; | |||
607 | ||||
608 | // C functions are not mangled. | |||
609 | if (L == CLanguageLinkage) | |||
610 | return false; | |||
611 | } | |||
612 | ||||
613 | // Otherwise, no mangling is done outside C++ mode. | |||
614 | if (!getASTContext().getLangOpts().CPlusPlus) | |||
615 | return false; | |||
616 | ||||
617 | const VarDecl *VD = dyn_cast<VarDecl>(D); | |||
618 | if (VD && !isa<DecompositionDecl>(D)) { | |||
619 | // C variables are not mangled. | |||
620 | if (VD->isExternC()) | |||
621 | return false; | |||
622 | ||||
623 | // Variables at global scope with non-internal linkage are not mangled | |||
624 | const DeclContext *DC = getEffectiveDeclContext(D); | |||
625 | // Check for extern variable declared locally. | |||
626 | if (DC->isFunctionOrMethod() && D->hasLinkage()) | |||
627 | while (!DC->isNamespace() && !DC->isTranslationUnit()) | |||
628 | DC = getEffectiveParentContext(DC); | |||
629 | if (DC->isTranslationUnit() && D->getFormalLinkage() != InternalLinkage && | |||
630 | !CXXNameMangler::shouldHaveAbiTags(*this, VD) && | |||
631 | !isa<VarTemplateSpecializationDecl>(D)) | |||
632 | return false; | |||
633 | } | |||
634 | ||||
635 | return true; | |||
636 | } | |||
637 | ||||
638 | void CXXNameMangler::writeAbiTags(const NamedDecl *ND, | |||
639 | const AbiTagList *AdditionalAbiTags) { | |||
640 | assert(AbiTags && "require AbiTagState")((AbiTags && "require AbiTagState") ? static_cast< void> (0) : __assert_fail ("AbiTags && \"require AbiTagState\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 640, __PRETTY_FUNCTION__)); | |||
641 | AbiTags->write(Out, ND, DisableDerivedAbiTags ? nullptr : AdditionalAbiTags); | |||
642 | } | |||
643 | ||||
644 | void CXXNameMangler::mangleSourceNameWithAbiTags( | |||
645 | const NamedDecl *ND, const AbiTagList *AdditionalAbiTags) { | |||
646 | mangleSourceName(ND->getIdentifier()); | |||
647 | writeAbiTags(ND, AdditionalAbiTags); | |||
648 | } | |||
649 | ||||
650 | void CXXNameMangler::mangle(GlobalDecl GD) { | |||
651 | // <mangled-name> ::= _Z <encoding> | |||
652 | // ::= <data name> | |||
653 | // ::= <special-name> | |||
654 | Out << "_Z"; | |||
655 | if (isa<FunctionDecl>(GD.getDecl())) | |||
656 | mangleFunctionEncoding(GD); | |||
657 | else if (isa<VarDecl, FieldDecl, MSGuidDecl, TemplateParamObjectDecl, | |||
658 | BindingDecl>(GD.getDecl())) | |||
659 | mangleName(GD); | |||
660 | else if (const IndirectFieldDecl *IFD = | |||
661 | dyn_cast<IndirectFieldDecl>(GD.getDecl())) | |||
662 | mangleName(IFD->getAnonField()); | |||
663 | else | |||
664 | llvm_unreachable("unexpected kind of global decl")::llvm::llvm_unreachable_internal("unexpected kind of global decl" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 664); | |||
665 | } | |||
666 | ||||
667 | void CXXNameMangler::mangleFunctionEncoding(GlobalDecl GD) { | |||
668 | const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl()); | |||
669 | // <encoding> ::= <function name> <bare-function-type> | |||
670 | ||||
671 | // Don't mangle in the type if this isn't a decl we should typically mangle. | |||
672 | if (!Context.shouldMangleDeclName(FD)) { | |||
673 | mangleName(GD); | |||
674 | return; | |||
675 | } | |||
676 | ||||
677 | AbiTagList ReturnTypeAbiTags = makeFunctionReturnTypeTags(FD); | |||
678 | if (ReturnTypeAbiTags.empty()) { | |||
679 | // There are no tags for return type, the simplest case. | |||
680 | mangleName(GD); | |||
681 | mangleFunctionEncodingBareType(FD); | |||
682 | return; | |||
683 | } | |||
684 | ||||
685 | // Mangle function name and encoding to temporary buffer. | |||
686 | // We have to output name and encoding to the same mangler to get the same | |||
687 | // substitution as it will be in final mangling. | |||
688 | SmallString<256> FunctionEncodingBuf; | |||
689 | llvm::raw_svector_ostream FunctionEncodingStream(FunctionEncodingBuf); | |||
690 | CXXNameMangler FunctionEncodingMangler(*this, FunctionEncodingStream); | |||
691 | // Output name of the function. | |||
692 | FunctionEncodingMangler.disableDerivedAbiTags(); | |||
693 | FunctionEncodingMangler.mangleNameWithAbiTags(FD, nullptr); | |||
694 | ||||
695 | // Remember length of the function name in the buffer. | |||
696 | size_t EncodingPositionStart = FunctionEncodingStream.str().size(); | |||
697 | FunctionEncodingMangler.mangleFunctionEncodingBareType(FD); | |||
698 | ||||
699 | // Get tags from return type that are not present in function name or | |||
700 | // encoding. | |||
701 | const AbiTagList &UsedAbiTags = | |||
702 | FunctionEncodingMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags(); | |||
703 | AbiTagList AdditionalAbiTags(ReturnTypeAbiTags.size()); | |||
704 | AdditionalAbiTags.erase( | |||
705 | std::set_difference(ReturnTypeAbiTags.begin(), ReturnTypeAbiTags.end(), | |||
706 | UsedAbiTags.begin(), UsedAbiTags.end(), | |||
707 | AdditionalAbiTags.begin()), | |||
708 | AdditionalAbiTags.end()); | |||
709 | ||||
710 | // Output name with implicit tags and function encoding from temporary buffer. | |||
711 | mangleNameWithAbiTags(FD, &AdditionalAbiTags); | |||
712 | Out << FunctionEncodingStream.str().substr(EncodingPositionStart); | |||
713 | ||||
714 | // Function encoding could create new substitutions so we have to add | |||
715 | // temp mangled substitutions to main mangler. | |||
716 | extendSubstitutions(&FunctionEncodingMangler); | |||
717 | } | |||
718 | ||||
719 | void CXXNameMangler::mangleFunctionEncodingBareType(const FunctionDecl *FD) { | |||
720 | if (FD->hasAttr<EnableIfAttr>()) { | |||
721 | FunctionTypeDepthState Saved = FunctionTypeDepth.push(); | |||
722 | Out << "Ua9enable_ifI"; | |||
723 | for (AttrVec::const_iterator I = FD->getAttrs().begin(), | |||
724 | E = FD->getAttrs().end(); | |||
725 | I != E; ++I) { | |||
726 | EnableIfAttr *EIA = dyn_cast<EnableIfAttr>(*I); | |||
727 | if (!EIA) | |||
728 | continue; | |||
729 | Out << 'X'; | |||
730 | mangleExpression(EIA->getCond()); | |||
731 | Out << 'E'; | |||
732 | } | |||
733 | Out << 'E'; | |||
734 | FunctionTypeDepth.pop(Saved); | |||
735 | } | |||
736 | ||||
737 | // When mangling an inheriting constructor, the bare function type used is | |||
738 | // that of the inherited constructor. | |||
739 | if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) | |||
740 | if (auto Inherited = CD->getInheritedConstructor()) | |||
741 | FD = Inherited.getConstructor(); | |||
742 | ||||
743 | // Whether the mangling of a function type includes the return type depends on | |||
744 | // the context and the nature of the function. The rules for deciding whether | |||
745 | // the return type is included are: | |||
746 | // | |||
747 | // 1. Template functions (names or types) have return types encoded, with | |||
748 | // the exceptions listed below. | |||
749 | // 2. Function types not appearing as part of a function name mangling, | |||
750 | // e.g. parameters, pointer types, etc., have return type encoded, with the | |||
751 | // exceptions listed below. | |||
752 | // 3. Non-template function names do not have return types encoded. | |||
753 | // | |||
754 | // The exceptions mentioned in (1) and (2) above, for which the return type is | |||
755 | // never included, are | |||
756 | // 1. Constructors. | |||
757 | // 2. Destructors. | |||
758 | // 3. Conversion operator functions, e.g. operator int. | |||
759 | bool MangleReturnType = false; | |||
760 | if (FunctionTemplateDecl *PrimaryTemplate = FD->getPrimaryTemplate()) { | |||
761 | if (!(isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD) || | |||
762 | isa<CXXConversionDecl>(FD))) | |||
763 | MangleReturnType = true; | |||
764 | ||||
765 | // Mangle the type of the primary template. | |||
766 | FD = PrimaryTemplate->getTemplatedDecl(); | |||
767 | } | |||
768 | ||||
769 | mangleBareFunctionType(FD->getType()->castAs<FunctionProtoType>(), | |||
770 | MangleReturnType, FD); | |||
771 | } | |||
772 | ||||
773 | static const DeclContext *IgnoreLinkageSpecDecls(const DeclContext *DC) { | |||
774 | while (isa<LinkageSpecDecl>(DC)) { | |||
775 | DC = getEffectiveParentContext(DC); | |||
776 | } | |||
777 | ||||
778 | return DC; | |||
779 | } | |||
780 | ||||
781 | /// Return whether a given namespace is the 'std' namespace. | |||
782 | static bool isStd(const NamespaceDecl *NS) { | |||
783 | if (!IgnoreLinkageSpecDecls(getEffectiveParentContext(NS)) | |||
784 | ->isTranslationUnit()) | |||
785 | return false; | |||
786 | ||||
787 | const IdentifierInfo *II = NS->getOriginalNamespace()->getIdentifier(); | |||
788 | return II && II->isStr("std"); | |||
789 | } | |||
790 | ||||
791 | // isStdNamespace - Return whether a given decl context is a toplevel 'std' | |||
792 | // namespace. | |||
793 | static bool isStdNamespace(const DeclContext *DC) { | |||
794 | if (!DC->isNamespace()) | |||
795 | return false; | |||
796 | ||||
797 | return isStd(cast<NamespaceDecl>(DC)); | |||
798 | } | |||
799 | ||||
800 | static const GlobalDecl | |||
801 | isTemplate(GlobalDecl GD, const TemplateArgumentList *&TemplateArgs) { | |||
802 | const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); | |||
803 | // Check if we have a function template. | |||
804 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) { | |||
805 | if (const TemplateDecl *TD = FD->getPrimaryTemplate()) { | |||
806 | TemplateArgs = FD->getTemplateSpecializationArgs(); | |||
807 | return GD.getWithDecl(TD); | |||
808 | } | |||
809 | } | |||
810 | ||||
811 | // Check if we have a class template. | |||
812 | if (const ClassTemplateSpecializationDecl *Spec = | |||
813 | dyn_cast<ClassTemplateSpecializationDecl>(ND)) { | |||
814 | TemplateArgs = &Spec->getTemplateArgs(); | |||
815 | return GD.getWithDecl(Spec->getSpecializedTemplate()); | |||
816 | } | |||
817 | ||||
818 | // Check if we have a variable template. | |||
819 | if (const VarTemplateSpecializationDecl *Spec = | |||
820 | dyn_cast<VarTemplateSpecializationDecl>(ND)) { | |||
821 | TemplateArgs = &Spec->getTemplateArgs(); | |||
822 | return GD.getWithDecl(Spec->getSpecializedTemplate()); | |||
823 | } | |||
824 | ||||
825 | return GlobalDecl(); | |||
826 | } | |||
827 | ||||
828 | static TemplateName asTemplateName(GlobalDecl GD) { | |||
829 | const TemplateDecl *TD = dyn_cast_or_null<TemplateDecl>(GD.getDecl()); | |||
830 | return TemplateName(const_cast<TemplateDecl*>(TD)); | |||
831 | } | |||
832 | ||||
833 | void CXXNameMangler::mangleName(GlobalDecl GD) { | |||
834 | const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); | |||
835 | if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) { | |||
836 | // Variables should have implicit tags from its type. | |||
837 | AbiTagList VariableTypeAbiTags = makeVariableTypeTags(VD); | |||
838 | if (VariableTypeAbiTags.empty()) { | |||
839 | // Simple case no variable type tags. | |||
840 | mangleNameWithAbiTags(VD, nullptr); | |||
841 | return; | |||
842 | } | |||
843 | ||||
844 | // Mangle variable name to null stream to collect tags. | |||
845 | llvm::raw_null_ostream NullOutStream; | |||
846 | CXXNameMangler VariableNameMangler(*this, NullOutStream); | |||
847 | VariableNameMangler.disableDerivedAbiTags(); | |||
848 | VariableNameMangler.mangleNameWithAbiTags(VD, nullptr); | |||
849 | ||||
850 | // Get tags from variable type that are not present in its name. | |||
851 | const AbiTagList &UsedAbiTags = | |||
852 | VariableNameMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags(); | |||
853 | AbiTagList AdditionalAbiTags(VariableTypeAbiTags.size()); | |||
854 | AdditionalAbiTags.erase( | |||
855 | std::set_difference(VariableTypeAbiTags.begin(), | |||
856 | VariableTypeAbiTags.end(), UsedAbiTags.begin(), | |||
857 | UsedAbiTags.end(), AdditionalAbiTags.begin()), | |||
858 | AdditionalAbiTags.end()); | |||
859 | ||||
860 | // Output name with implicit tags. | |||
861 | mangleNameWithAbiTags(VD, &AdditionalAbiTags); | |||
862 | } else { | |||
863 | mangleNameWithAbiTags(GD, nullptr); | |||
864 | } | |||
865 | } | |||
866 | ||||
867 | void CXXNameMangler::mangleNameWithAbiTags(GlobalDecl GD, | |||
868 | const AbiTagList *AdditionalAbiTags) { | |||
869 | const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); | |||
870 | // <name> ::= [<module-name>] <nested-name> | |||
871 | // ::= [<module-name>] <unscoped-name> | |||
872 | // ::= [<module-name>] <unscoped-template-name> <template-args> | |||
873 | // ::= <local-name> | |||
874 | // | |||
875 | const DeclContext *DC = getEffectiveDeclContext(ND); | |||
876 | ||||
877 | // If this is an extern variable declared locally, the relevant DeclContext | |||
878 | // is that of the containing namespace, or the translation unit. | |||
879 | // FIXME: This is a hack; extern variables declared locally should have | |||
880 | // a proper semantic declaration context! | |||
881 | if (isLocalContainerContext(DC) && ND->hasLinkage() && !isLambda(ND)) | |||
882 | while (!DC->isNamespace() && !DC->isTranslationUnit()) | |||
883 | DC = getEffectiveParentContext(DC); | |||
884 | else if (GetLocalClassDecl(ND)) { | |||
885 | mangleLocalName(GD, AdditionalAbiTags); | |||
886 | return; | |||
887 | } | |||
888 | ||||
889 | DC = IgnoreLinkageSpecDecls(DC); | |||
890 | ||||
891 | if (isLocalContainerContext(DC)) { | |||
892 | mangleLocalName(GD, AdditionalAbiTags); | |||
893 | return; | |||
894 | } | |||
895 | ||||
896 | // Do not mangle the owning module for an external linkage declaration. | |||
897 | // This enables backwards-compatibility with non-modular code, and is | |||
898 | // a valid choice since conflicts are not permitted by C++ Modules TS | |||
899 | // [basic.def.odr]/6.2. | |||
900 | if (!ND->hasExternalFormalLinkage()) | |||
901 | if (Module *M = ND->getOwningModuleForLinkage()) | |||
902 | mangleModuleName(M); | |||
903 | ||||
904 | if (DC->isTranslationUnit() || isStdNamespace(DC)) { | |||
905 | // Check if we have a template. | |||
906 | const TemplateArgumentList *TemplateArgs = nullptr; | |||
907 | if (GlobalDecl TD = isTemplate(GD, TemplateArgs)) { | |||
908 | mangleUnscopedTemplateName(TD, AdditionalAbiTags); | |||
909 | mangleTemplateArgs(asTemplateName(TD), *TemplateArgs); | |||
910 | return; | |||
911 | } | |||
912 | ||||
913 | mangleUnscopedName(GD, AdditionalAbiTags); | |||
914 | return; | |||
915 | } | |||
916 | ||||
917 | mangleNestedName(GD, DC, AdditionalAbiTags); | |||
918 | } | |||
919 | ||||
920 | void CXXNameMangler::mangleModuleName(const Module *M) { | |||
921 | // Implement the C++ Modules TS name mangling proposal; see | |||
922 | // https://gcc.gnu.org/wiki/cxx-modules?action=AttachFile | |||
923 | // | |||
924 | // <module-name> ::= W <unscoped-name>+ E | |||
925 | // ::= W <module-subst> <unscoped-name>* E | |||
926 | Out << 'W'; | |||
927 | mangleModuleNamePrefix(M->Name); | |||
928 | Out << 'E'; | |||
929 | } | |||
930 | ||||
931 | void CXXNameMangler::mangleModuleNamePrefix(StringRef Name) { | |||
932 | // <module-subst> ::= _ <seq-id> # 0 < seq-id < 10 | |||
933 | // ::= W <seq-id - 10> _ # otherwise | |||
934 | auto It = ModuleSubstitutions.find(Name); | |||
935 | if (It != ModuleSubstitutions.end()) { | |||
936 | if (It->second < 10) | |||
937 | Out << '_' << static_cast<char>('0' + It->second); | |||
938 | else | |||
939 | Out << 'W' << (It->second - 10) << '_'; | |||
940 | return; | |||
941 | } | |||
942 | ||||
943 | // FIXME: Preserve hierarchy in module names rather than flattening | |||
944 | // them to strings; use Module*s as substitution keys. | |||
945 | auto Parts = Name.rsplit('.'); | |||
946 | if (Parts.second.empty()) | |||
947 | Parts.second = Parts.first; | |||
948 | else | |||
949 | mangleModuleNamePrefix(Parts.first); | |||
950 | ||||
951 | Out << Parts.second.size() << Parts.second; | |||
952 | ModuleSubstitutions.insert({Name, ModuleSubstitutions.size()}); | |||
953 | } | |||
954 | ||||
955 | void CXXNameMangler::mangleTemplateName(const TemplateDecl *TD, | |||
956 | const TemplateArgument *TemplateArgs, | |||
957 | unsigned NumTemplateArgs) { | |||
958 | const DeclContext *DC = IgnoreLinkageSpecDecls(getEffectiveDeclContext(TD)); | |||
959 | ||||
960 | if (DC->isTranslationUnit() || isStdNamespace(DC)) { | |||
961 | mangleUnscopedTemplateName(TD, nullptr); | |||
962 | mangleTemplateArgs(asTemplateName(TD), TemplateArgs, NumTemplateArgs); | |||
963 | } else { | |||
964 | mangleNestedName(TD, TemplateArgs, NumTemplateArgs); | |||
965 | } | |||
966 | } | |||
967 | ||||
968 | void CXXNameMangler::mangleUnscopedName(GlobalDecl GD, | |||
969 | const AbiTagList *AdditionalAbiTags) { | |||
970 | const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); | |||
971 | // <unscoped-name> ::= <unqualified-name> | |||
972 | // ::= St <unqualified-name> # ::std:: | |||
973 | ||||
974 | if (isStdNamespace(IgnoreLinkageSpecDecls(getEffectiveDeclContext(ND)))) | |||
975 | Out << "St"; | |||
976 | ||||
977 | mangleUnqualifiedName(GD, AdditionalAbiTags); | |||
978 | } | |||
979 | ||||
980 | void CXXNameMangler::mangleUnscopedTemplateName( | |||
981 | GlobalDecl GD, const AbiTagList *AdditionalAbiTags) { | |||
982 | const TemplateDecl *ND = cast<TemplateDecl>(GD.getDecl()); | |||
983 | // <unscoped-template-name> ::= <unscoped-name> | |||
984 | // ::= <substitution> | |||
985 | if (mangleSubstitution(ND)) | |||
986 | return; | |||
987 | ||||
988 | // <template-template-param> ::= <template-param> | |||
989 | if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) { | |||
990 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 991, __PRETTY_FUNCTION__)) | |||
991 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 991, __PRETTY_FUNCTION__)); | |||
992 | mangleTemplateParameter(TTP->getDepth(), TTP->getIndex()); | |||
993 | } else if (isa<BuiltinTemplateDecl>(ND) || isa<ConceptDecl>(ND)) { | |||
994 | mangleUnscopedName(GD, AdditionalAbiTags); | |||
995 | } else { | |||
996 | mangleUnscopedName(GD.getWithDecl(ND->getTemplatedDecl()), AdditionalAbiTags); | |||
997 | } | |||
998 | ||||
999 | addSubstitution(ND); | |||
1000 | } | |||
1001 | ||||
1002 | void CXXNameMangler::mangleFloat(const llvm::APFloat &f) { | |||
1003 | // ABI: | |||
1004 | // Floating-point literals are encoded using a fixed-length | |||
1005 | // lowercase hexadecimal string corresponding to the internal | |||
1006 | // representation (IEEE on Itanium), high-order bytes first, | |||
1007 | // without leading zeroes. For example: "Lf bf800000 E" is -1.0f | |||
1008 | // on Itanium. | |||
1009 | // The 'without leading zeroes' thing seems to be an editorial | |||
1010 | // mistake; see the discussion on cxx-abi-dev beginning on | |||
1011 | // 2012-01-16. | |||
1012 | ||||
1013 | // Our requirements here are just barely weird enough to justify | |||
1014 | // using a custom algorithm instead of post-processing APInt::toString(). | |||
1015 | ||||
1016 | llvm::APInt valueBits = f.bitcastToAPInt(); | |||
1017 | unsigned numCharacters = (valueBits.getBitWidth() + 3) / 4; | |||
1018 | assert(numCharacters != 0)((numCharacters != 0) ? static_cast<void> (0) : __assert_fail ("numCharacters != 0", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1018, __PRETTY_FUNCTION__)); | |||
1019 | ||||
1020 | // Allocate a buffer of the right number of characters. | |||
1021 | SmallVector<char, 20> buffer(numCharacters); | |||
1022 | ||||
1023 | // Fill the buffer left-to-right. | |||
1024 | for (unsigned stringIndex = 0; stringIndex != numCharacters; ++stringIndex) { | |||
1025 | // The bit-index of the next hex digit. | |||
1026 | unsigned digitBitIndex = 4 * (numCharacters - stringIndex - 1); | |||
1027 | ||||
1028 | // Project out 4 bits starting at 'digitIndex'. | |||
1029 | uint64_t hexDigit = valueBits.getRawData()[digitBitIndex / 64]; | |||
1030 | hexDigit >>= (digitBitIndex % 64); | |||
1031 | hexDigit &= 0xF; | |||
1032 | ||||
1033 | // Map that over to a lowercase hex digit. | |||
1034 | static const char charForHex[16] = { | |||
1035 | '0', '1', '2', '3', '4', '5', '6', '7', | |||
1036 | '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' | |||
1037 | }; | |||
1038 | buffer[stringIndex] = charForHex[hexDigit]; | |||
1039 | } | |||
1040 | ||||
1041 | Out.write(buffer.data(), numCharacters); | |||
1042 | } | |||
1043 | ||||
1044 | void CXXNameMangler::mangleFloatLiteral(QualType T, const llvm::APFloat &V) { | |||
1045 | Out << 'L'; | |||
1046 | mangleType(T); | |||
1047 | mangleFloat(V); | |||
1048 | Out << 'E'; | |||
1049 | } | |||
1050 | ||||
1051 | void CXXNameMangler::mangleFixedPointLiteral() { | |||
1052 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
1053 | unsigned DiagID = Diags.getCustomDiagID( | |||
1054 | DiagnosticsEngine::Error, "cannot mangle fixed point literals yet"); | |||
1055 | Diags.Report(DiagID); | |||
1056 | } | |||
1057 | ||||
1058 | void CXXNameMangler::mangleNullPointer(QualType T) { | |||
1059 | // <expr-primary> ::= L <type> 0 E | |||
1060 | Out << 'L'; | |||
1061 | mangleType(T); | |||
1062 | Out << "0E"; | |||
1063 | } | |||
1064 | ||||
1065 | void CXXNameMangler::mangleNumber(const llvm::APSInt &Value) { | |||
1066 | if (Value.isSigned() && Value.isNegative()) { | |||
1067 | Out << 'n'; | |||
1068 | Value.abs().print(Out, /*signed*/ false); | |||
1069 | } else { | |||
1070 | Value.print(Out, /*signed*/ false); | |||
1071 | } | |||
1072 | } | |||
1073 | ||||
1074 | void CXXNameMangler::mangleNumber(int64_t Number) { | |||
1075 | // <number> ::= [n] <non-negative decimal integer> | |||
1076 | if (Number < 0) { | |||
1077 | Out << 'n'; | |||
1078 | Number = -Number; | |||
1079 | } | |||
1080 | ||||
1081 | Out << Number; | |||
1082 | } | |||
1083 | ||||
1084 | void CXXNameMangler::mangleCallOffset(int64_t NonVirtual, int64_t Virtual) { | |||
1085 | // <call-offset> ::= h <nv-offset> _ | |||
1086 | // ::= v <v-offset> _ | |||
1087 | // <nv-offset> ::= <offset number> # non-virtual base override | |||
1088 | // <v-offset> ::= <offset number> _ <virtual offset number> | |||
1089 | // # virtual base override, with vcall offset | |||
1090 | if (!Virtual) { | |||
1091 | Out << 'h'; | |||
1092 | mangleNumber(NonVirtual); | |||
1093 | Out << '_'; | |||
1094 | return; | |||
1095 | } | |||
1096 | ||||
1097 | Out << 'v'; | |||
1098 | mangleNumber(NonVirtual); | |||
1099 | Out << '_'; | |||
1100 | mangleNumber(Virtual); | |||
1101 | Out << '_'; | |||
1102 | } | |||
1103 | ||||
1104 | void CXXNameMangler::manglePrefix(QualType type) { | |||
1105 | if (const auto *TST = type->getAs<TemplateSpecializationType>()) { | |||
1106 | if (!mangleSubstitution(QualType(TST, 0))) { | |||
1107 | mangleTemplatePrefix(TST->getTemplateName()); | |||
1108 | ||||
1109 | // FIXME: GCC does not appear to mangle the template arguments when | |||
1110 | // the template in question is a dependent template name. Should we | |||
1111 | // emulate that badness? | |||
1112 | mangleTemplateArgs(TST->getTemplateName(), TST->getArgs(), | |||
1113 | TST->getNumArgs()); | |||
1114 | addSubstitution(QualType(TST, 0)); | |||
1115 | } | |||
1116 | } else if (const auto *DTST = | |||
1117 | type->getAs<DependentTemplateSpecializationType>()) { | |||
1118 | if (!mangleSubstitution(QualType(DTST, 0))) { | |||
1119 | TemplateName Template = getASTContext().getDependentTemplateName( | |||
1120 | DTST->getQualifier(), DTST->getIdentifier()); | |||
1121 | mangleTemplatePrefix(Template); | |||
1122 | ||||
1123 | // FIXME: GCC does not appear to mangle the template arguments when | |||
1124 | // the template in question is a dependent template name. Should we | |||
1125 | // emulate that badness? | |||
1126 | mangleTemplateArgs(Template, DTST->getArgs(), DTST->getNumArgs()); | |||
1127 | addSubstitution(QualType(DTST, 0)); | |||
1128 | } | |||
1129 | } else { | |||
1130 | // We use the QualType mangle type variant here because it handles | |||
1131 | // substitutions. | |||
1132 | mangleType(type); | |||
1133 | } | |||
1134 | } | |||
1135 | ||||
1136 | /// Mangle everything prior to the base-unresolved-name in an unresolved-name. | |||
1137 | /// | |||
1138 | /// \param recursive - true if this is being called recursively, | |||
1139 | /// i.e. if there is more prefix "to the right". | |||
1140 | void CXXNameMangler::mangleUnresolvedPrefix(NestedNameSpecifier *qualifier, | |||
1141 | bool recursive) { | |||
1142 | ||||
1143 | // x, ::x | |||
1144 | // <unresolved-name> ::= [gs] <base-unresolved-name> | |||
1145 | ||||
1146 | // T::x / decltype(p)::x | |||
1147 | // <unresolved-name> ::= sr <unresolved-type> <base-unresolved-name> | |||
1148 | ||||
1149 | // T::N::x /decltype(p)::N::x | |||
1150 | // <unresolved-name> ::= srN <unresolved-type> <unresolved-qualifier-level>+ E | |||
1151 | // <base-unresolved-name> | |||
1152 | ||||
1153 | // A::x, N::y, A<T>::z; "gs" means leading "::" | |||
1154 | // <unresolved-name> ::= [gs] sr <unresolved-qualifier-level>+ E | |||
1155 | // <base-unresolved-name> | |||
1156 | ||||
1157 | switch (qualifier->getKind()) { | |||
1158 | case NestedNameSpecifier::Global: | |||
1159 | Out << "gs"; | |||
1160 | ||||
1161 | // We want an 'sr' unless this is the entire NNS. | |||
1162 | if (recursive) | |||
1163 | Out << "sr"; | |||
1164 | ||||
1165 | // We never want an 'E' here. | |||
1166 | return; | |||
1167 | ||||
1168 | case NestedNameSpecifier::Super: | |||
1169 | llvm_unreachable("Can't mangle __super specifier")::llvm::llvm_unreachable_internal("Can't mangle __super specifier" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1169); | |||
1170 | ||||
1171 | case NestedNameSpecifier::Namespace: | |||
1172 | if (qualifier->getPrefix()) | |||
1173 | mangleUnresolvedPrefix(qualifier->getPrefix(), | |||
1174 | /*recursive*/ true); | |||
1175 | else | |||
1176 | Out << "sr"; | |||
1177 | mangleSourceNameWithAbiTags(qualifier->getAsNamespace()); | |||
1178 | break; | |||
1179 | case NestedNameSpecifier::NamespaceAlias: | |||
1180 | if (qualifier->getPrefix()) | |||
1181 | mangleUnresolvedPrefix(qualifier->getPrefix(), | |||
1182 | /*recursive*/ true); | |||
1183 | else | |||
1184 | Out << "sr"; | |||
1185 | mangleSourceNameWithAbiTags(qualifier->getAsNamespaceAlias()); | |||
1186 | break; | |||
1187 | ||||
1188 | case NestedNameSpecifier::TypeSpec: | |||
1189 | case NestedNameSpecifier::TypeSpecWithTemplate: { | |||
1190 | const Type *type = qualifier->getAsType(); | |||
1191 | ||||
1192 | // We only want to use an unresolved-type encoding if this is one of: | |||
1193 | // - a decltype | |||
1194 | // - a template type parameter | |||
1195 | // - a template template parameter with arguments | |||
1196 | // In all of these cases, we should have no prefix. | |||
1197 | if (qualifier->getPrefix()) { | |||
1198 | mangleUnresolvedPrefix(qualifier->getPrefix(), | |||
1199 | /*recursive*/ true); | |||
1200 | } else { | |||
1201 | // Otherwise, all the cases want this. | |||
1202 | Out << "sr"; | |||
1203 | } | |||
1204 | ||||
1205 | if (mangleUnresolvedTypeOrSimpleId(QualType(type, 0), recursive ? "N" : "")) | |||
1206 | return; | |||
1207 | ||||
1208 | break; | |||
1209 | } | |||
1210 | ||||
1211 | case NestedNameSpecifier::Identifier: | |||
1212 | // Member expressions can have these without prefixes. | |||
1213 | if (qualifier->getPrefix()) | |||
1214 | mangleUnresolvedPrefix(qualifier->getPrefix(), | |||
1215 | /*recursive*/ true); | |||
1216 | else | |||
1217 | Out << "sr"; | |||
1218 | ||||
1219 | mangleSourceName(qualifier->getAsIdentifier()); | |||
1220 | // An Identifier has no type information, so we can't emit abi tags for it. | |||
1221 | break; | |||
1222 | } | |||
1223 | ||||
1224 | // If this was the innermost part of the NNS, and we fell out to | |||
1225 | // here, append an 'E'. | |||
1226 | if (!recursive) | |||
1227 | Out << 'E'; | |||
1228 | } | |||
1229 | ||||
1230 | /// Mangle an unresolved-name, which is generally used for names which | |||
1231 | /// weren't resolved to specific entities. | |||
1232 | void CXXNameMangler::mangleUnresolvedName( | |||
1233 | NestedNameSpecifier *qualifier, DeclarationName name, | |||
1234 | const TemplateArgumentLoc *TemplateArgs, unsigned NumTemplateArgs, | |||
1235 | unsigned knownArity) { | |||
1236 | if (qualifier) mangleUnresolvedPrefix(qualifier); | |||
1237 | switch (name.getNameKind()) { | |||
1238 | // <base-unresolved-name> ::= <simple-id> | |||
1239 | case DeclarationName::Identifier: | |||
1240 | mangleSourceName(name.getAsIdentifierInfo()); | |||
1241 | break; | |||
1242 | // <base-unresolved-name> ::= dn <destructor-name> | |||
1243 | case DeclarationName::CXXDestructorName: | |||
1244 | Out << "dn"; | |||
1245 | mangleUnresolvedTypeOrSimpleId(name.getCXXNameType()); | |||
1246 | break; | |||
1247 | // <base-unresolved-name> ::= on <operator-name> | |||
1248 | case DeclarationName::CXXConversionFunctionName: | |||
1249 | case DeclarationName::CXXLiteralOperatorName: | |||
1250 | case DeclarationName::CXXOperatorName: | |||
1251 | Out << "on"; | |||
1252 | mangleOperatorName(name, knownArity); | |||
1253 | break; | |||
1254 | case DeclarationName::CXXConstructorName: | |||
1255 | llvm_unreachable("Can't mangle a constructor name!")::llvm::llvm_unreachable_internal("Can't mangle a constructor name!" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1255); | |||
1256 | case DeclarationName::CXXUsingDirective: | |||
1257 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1257); | |||
1258 | case DeclarationName::CXXDeductionGuideName: | |||
1259 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1259); | |||
1260 | case DeclarationName::ObjCMultiArgSelector: | |||
1261 | case DeclarationName::ObjCOneArgSelector: | |||
1262 | case DeclarationName::ObjCZeroArgSelector: | |||
1263 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1263); | |||
1264 | } | |||
1265 | ||||
1266 | // The <simple-id> and on <operator-name> productions end in an optional | |||
1267 | // <template-args>. | |||
1268 | if (TemplateArgs) | |||
1269 | mangleTemplateArgs(TemplateName(), TemplateArgs, NumTemplateArgs); | |||
1270 | } | |||
1271 | ||||
1272 | void CXXNameMangler::mangleUnqualifiedName(GlobalDecl GD, | |||
1273 | DeclarationName Name, | |||
1274 | unsigned KnownArity, | |||
1275 | const AbiTagList *AdditionalAbiTags) { | |||
1276 | const NamedDecl *ND = cast_or_null<NamedDecl>(GD.getDecl()); | |||
| ||||
1277 | unsigned Arity = KnownArity; | |||
1278 | // <unqualified-name> ::= <operator-name> | |||
1279 | // ::= <ctor-dtor-name> | |||
1280 | // ::= <source-name> | |||
1281 | switch (Name.getNameKind()) { | |||
1282 | case DeclarationName::Identifier: { | |||
1283 | const IdentifierInfo *II = Name.getAsIdentifierInfo(); | |||
1284 | ||||
1285 | // We mangle decomposition declarations as the names of their bindings. | |||
1286 | if (auto *DD = dyn_cast<DecompositionDecl>(ND)) { | |||
1287 | // FIXME: Non-standard mangling for decomposition declarations: | |||
1288 | // | |||
1289 | // <unqualified-name> ::= DC <source-name>* E | |||
1290 | // | |||
1291 | // These can never be referenced across translation units, so we do | |||
1292 | // not need a cross-vendor mangling for anything other than demanglers. | |||
1293 | // Proposed on cxx-abi-dev on 2016-08-12 | |||
1294 | Out << "DC"; | |||
1295 | for (auto *BD : DD->bindings()) | |||
1296 | mangleSourceName(BD->getDeclName().getAsIdentifierInfo()); | |||
1297 | Out << 'E'; | |||
1298 | writeAbiTags(ND, AdditionalAbiTags); | |||
1299 | break; | |||
1300 | } | |||
1301 | ||||
1302 | if (auto *GD = dyn_cast<MSGuidDecl>(ND)) { | |||
1303 | // We follow MSVC in mangling GUID declarations as if they were variables | |||
1304 | // with a particular reserved name. Continue the pretense here. | |||
1305 | SmallString<sizeof("_GUID_12345678_1234_1234_1234_1234567890ab")> GUID; | |||
1306 | llvm::raw_svector_ostream GUIDOS(GUID); | |||
1307 | Context.mangleMSGuidDecl(GD, GUIDOS); | |||
1308 | Out << GUID.size() << GUID; | |||
1309 | break; | |||
1310 | } | |||
1311 | ||||
1312 | if (auto *TPO = dyn_cast<TemplateParamObjectDecl>(ND)) { | |||
1313 | // Proposed in https://github.com/itanium-cxx-abi/cxx-abi/issues/63. | |||
1314 | Out << "TA"; | |||
1315 | mangleValueInTemplateArg(TPO->getType().getUnqualifiedType(), | |||
1316 | TPO->getValue(), /*TopLevel=*/true); | |||
1317 | break; | |||
1318 | } | |||
1319 | ||||
1320 | if (II) { | |||
1321 | // Match GCC's naming convention for internal linkage symbols, for | |||
1322 | // symbols that are not actually visible outside of this TU. GCC | |||
1323 | // distinguishes between internal and external linkage symbols in | |||
1324 | // its mangling, to support cases like this that were valid C++ prior | |||
1325 | // to DR426: | |||
1326 | // | |||
1327 | // void test() { extern void foo(); } | |||
1328 | // static void foo(); | |||
1329 | // | |||
1330 | // Don't bother with the L marker for names in anonymous namespaces; the | |||
1331 | // 12_GLOBAL__N_1 mangling is quite sufficient there, and this better | |||
1332 | // matches GCC anyway, because GCC does not treat anonymous namespaces as | |||
1333 | // implying internal linkage. | |||
1334 | if (ND && ND->getFormalLinkage() == InternalLinkage && | |||
1335 | !ND->isExternallyVisible() && | |||
1336 | getEffectiveDeclContext(ND)->isFileContext() && | |||
1337 | !ND->isInAnonymousNamespace()) | |||
1338 | Out << 'L'; | |||
1339 | ||||
1340 | auto *FD = dyn_cast<FunctionDecl>(ND); | |||
1341 | bool IsRegCall = FD && | |||
1342 | FD->getType()->castAs<FunctionType>()->getCallConv() == | |||
1343 | clang::CC_X86RegCall; | |||
1344 | bool IsDeviceStub = | |||
1345 | FD && FD->hasAttr<CUDAGlobalAttr>() && | |||
1346 | GD.getKernelReferenceKind() == KernelReferenceKind::Stub; | |||
1347 | if (IsDeviceStub) | |||
1348 | mangleDeviceStubName(II); | |||
1349 | else if (IsRegCall) | |||
1350 | mangleRegCallName(II); | |||
1351 | else | |||
1352 | mangleSourceName(II); | |||
1353 | ||||
1354 | writeAbiTags(ND, AdditionalAbiTags); | |||
1355 | break; | |||
1356 | } | |||
1357 | ||||
1358 | // Otherwise, an anonymous entity. We must have a declaration. | |||
1359 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1359, __PRETTY_FUNCTION__)); | |||
1360 | ||||
1361 | if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) { | |||
1362 | if (NS->isAnonymousNamespace()) { | |||
1363 | // This is how gcc mangles these names. | |||
1364 | Out << "12_GLOBAL__N_1"; | |||
1365 | break; | |||
1366 | } | |||
1367 | } | |||
1368 | ||||
1369 | if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) { | |||
1370 | // We must have an anonymous union or struct declaration. | |||
1371 | const RecordDecl *RD = VD->getType()->castAs<RecordType>()->getDecl(); | |||
1372 | ||||
1373 | // Itanium C++ ABI 5.1.2: | |||
1374 | // | |||
1375 | // For the purposes of mangling, the name of an anonymous union is | |||
1376 | // considered to be the name of the first named data member found by a | |||
1377 | // pre-order, depth-first, declaration-order walk of the data members of | |||
1378 | // the anonymous union. If there is no such data member (i.e., if all of | |||
1379 | // the data members in the union are unnamed), then there is no way for | |||
1380 | // a program to refer to the anonymous union, and there is therefore no | |||
1381 | // need to mangle its name. | |||
1382 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1383, __PRETTY_FUNCTION__)) | |||
1383 | && "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1383, __PRETTY_FUNCTION__)); | |||
1384 | const FieldDecl *FD = RD->findFirstNamedDataMember(); | |||
1385 | ||||
1386 | // It's actually possible for various reasons for us to get here | |||
1387 | // with an empty anonymous struct / union. Fortunately, it | |||
1388 | // doesn't really matter what name we generate. | |||
1389 | if (!FD) break; | |||
1390 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1390, __PRETTY_FUNCTION__)); | |||
1391 | ||||
1392 | mangleSourceName(FD->getIdentifier()); | |||
1393 | // Not emitting abi tags: internal name anyway. | |||
1394 | break; | |||
1395 | } | |||
1396 | ||||
1397 | // Class extensions have no name as a category, and it's possible | |||
1398 | // for them to be the semantic parent of certain declarations | |||
1399 | // (primarily, tag decls defined within declarations). Such | |||
1400 | // declarations will always have internal linkage, so the name | |||
1401 | // doesn't really matter, but we shouldn't crash on them. For | |||
1402 | // safety, just handle all ObjC containers here. | |||
1403 | if (isa<ObjCContainerDecl>(ND)) | |||
1404 | break; | |||
1405 | ||||
1406 | // We must have an anonymous struct. | |||
1407 | const TagDecl *TD = cast<TagDecl>(ND); | |||
1408 | if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) { | |||
1409 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1410, __PRETTY_FUNCTION__)) | |||
1410 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1410, __PRETTY_FUNCTION__)); | |||
1411 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1412, __PRETTY_FUNCTION__)) | |||
1412 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1412, __PRETTY_FUNCTION__)); | |||
1413 | mangleSourceName(D->getDeclName().getAsIdentifierInfo()); | |||
1414 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1414, __PRETTY_FUNCTION__)); | |||
1415 | // Explicit abi tags are still possible; take from underlying type, not | |||
1416 | // from typedef. | |||
1417 | writeAbiTags(TD, nullptr); | |||
1418 | break; | |||
1419 | } | |||
1420 | ||||
1421 | // <unnamed-type-name> ::= <closure-type-name> | |||
1422 | // | |||
1423 | // <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _ | |||
1424 | // <lambda-sig> ::= <template-param-decl>* <parameter-type>+ | |||
1425 | // # Parameter types or 'v' for 'void'. | |||
1426 | if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) { | |||
1427 | if (Record->isLambda() && Record->getLambdaManglingNumber()) { | |||
1428 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1429, __PRETTY_FUNCTION__)) | |||
1429 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1429, __PRETTY_FUNCTION__)); | |||
1430 | mangleLambda(Record); | |||
1431 | break; | |||
1432 | } | |||
1433 | } | |||
1434 | ||||
1435 | if (TD->isExternallyVisible()) { | |||
1436 | unsigned UnnamedMangle = getASTContext().getManglingNumber(TD); | |||
1437 | Out << "Ut"; | |||
1438 | if (UnnamedMangle > 1) | |||
1439 | Out << UnnamedMangle - 2; | |||
1440 | Out << '_'; | |||
1441 | writeAbiTags(TD, AdditionalAbiTags); | |||
1442 | break; | |||
1443 | } | |||
1444 | ||||
1445 | // Get a unique id for the anonymous struct. If it is not a real output | |||
1446 | // ID doesn't matter so use fake one. | |||
1447 | unsigned AnonStructId = NullOut ? 0 : Context.getAnonymousStructId(TD); | |||
1448 | ||||
1449 | // Mangle it as a source name in the form | |||
1450 | // [n] $_<id> | |||
1451 | // where n is the length of the string. | |||
1452 | SmallString<8> Str; | |||
1453 | Str += "$_"; | |||
1454 | Str += llvm::utostr(AnonStructId); | |||
1455 | ||||
1456 | Out << Str.size(); | |||
1457 | Out << Str; | |||
1458 | break; | |||
1459 | } | |||
1460 | ||||
1461 | case DeclarationName::ObjCZeroArgSelector: | |||
1462 | case DeclarationName::ObjCOneArgSelector: | |||
1463 | case DeclarationName::ObjCMultiArgSelector: | |||
1464 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1464); | |||
1465 | ||||
1466 | case DeclarationName::CXXConstructorName: { | |||
1467 | const CXXRecordDecl *InheritedFrom = nullptr; | |||
1468 | TemplateName InheritedTemplateName; | |||
1469 | const TemplateArgumentList *InheritedTemplateArgs = nullptr; | |||
1470 | if (auto Inherited = | |||
1471 | cast<CXXConstructorDecl>(ND)->getInheritedConstructor()) { | |||
1472 | InheritedFrom = Inherited.getConstructor()->getParent(); | |||
1473 | InheritedTemplateName = | |||
1474 | TemplateName(Inherited.getConstructor()->getPrimaryTemplate()); | |||
1475 | InheritedTemplateArgs = | |||
1476 | Inherited.getConstructor()->getTemplateSpecializationArgs(); | |||
1477 | } | |||
1478 | ||||
1479 | if (ND == Structor) | |||
1480 | // If the named decl is the C++ constructor we're mangling, use the type | |||
1481 | // we were given. | |||
1482 | mangleCXXCtorType(static_cast<CXXCtorType>(StructorType), InheritedFrom); | |||
1483 | else | |||
1484 | // Otherwise, use the complete constructor name. This is relevant if a | |||
1485 | // class with a constructor is declared within a constructor. | |||
1486 | mangleCXXCtorType(Ctor_Complete, InheritedFrom); | |||
1487 | ||||
1488 | // FIXME: The template arguments are part of the enclosing prefix or | |||
1489 | // nested-name, but it's more convenient to mangle them here. | |||
1490 | if (InheritedTemplateArgs) | |||
1491 | mangleTemplateArgs(InheritedTemplateName, *InheritedTemplateArgs); | |||
1492 | ||||
1493 | writeAbiTags(ND, AdditionalAbiTags); | |||
1494 | break; | |||
1495 | } | |||
1496 | ||||
1497 | case DeclarationName::CXXDestructorName: | |||
1498 | if (ND == Structor) | |||
1499 | // If the named decl is the C++ destructor we're mangling, use the type we | |||
1500 | // were given. | |||
1501 | mangleCXXDtorType(static_cast<CXXDtorType>(StructorType)); | |||
1502 | else | |||
1503 | // Otherwise, use the complete destructor name. This is relevant if a | |||
1504 | // class with a destructor is declared within a destructor. | |||
1505 | mangleCXXDtorType(Dtor_Complete); | |||
1506 | writeAbiTags(ND, AdditionalAbiTags); | |||
1507 | break; | |||
1508 | ||||
1509 | case DeclarationName::CXXOperatorName: | |||
1510 | if (ND && Arity == UnknownArity) { | |||
1511 | Arity = cast<FunctionDecl>(ND)->getNumParams(); | |||
1512 | ||||
1513 | // If we have a member function, we need to include the 'this' pointer. | |||
1514 | if (const auto *MD = dyn_cast<CXXMethodDecl>(ND)) | |||
1515 | if (!MD->isStatic()) | |||
1516 | Arity++; | |||
1517 | } | |||
1518 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | |||
1519 | case DeclarationName::CXXConversionFunctionName: | |||
1520 | case DeclarationName::CXXLiteralOperatorName: | |||
1521 | mangleOperatorName(Name, Arity); | |||
1522 | writeAbiTags(ND, AdditionalAbiTags); | |||
1523 | break; | |||
1524 | ||||
1525 | case DeclarationName::CXXDeductionGuideName: | |||
1526 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1526); | |||
1527 | ||||
1528 | case DeclarationName::CXXUsingDirective: | |||
1529 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1529); | |||
1530 | } | |||
1531 | } | |||
1532 | ||||
1533 | void CXXNameMangler::mangleRegCallName(const IdentifierInfo *II) { | |||
1534 | // <source-name> ::= <positive length number> __regcall3__ <identifier> | |||
1535 | // <number> ::= [n] <non-negative decimal integer> | |||
1536 | // <identifier> ::= <unqualified source code identifier> | |||
1537 | Out << II->getLength() + sizeof("__regcall3__") - 1 << "__regcall3__" | |||
1538 | << II->getName(); | |||
1539 | } | |||
1540 | ||||
1541 | void CXXNameMangler::mangleDeviceStubName(const IdentifierInfo *II) { | |||
1542 | // <source-name> ::= <positive length number> __device_stub__ <identifier> | |||
1543 | // <number> ::= [n] <non-negative decimal integer> | |||
1544 | // <identifier> ::= <unqualified source code identifier> | |||
1545 | Out << II->getLength() + sizeof("__device_stub__") - 1 << "__device_stub__" | |||
1546 | << II->getName(); | |||
1547 | } | |||
1548 | ||||
1549 | void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) { | |||
1550 | // <source-name> ::= <positive length number> <identifier> | |||
1551 | // <number> ::= [n] <non-negative decimal integer> | |||
1552 | // <identifier> ::= <unqualified source code identifier> | |||
1553 | Out << II->getLength() << II->getName(); | |||
1554 | } | |||
1555 | ||||
1556 | void CXXNameMangler::mangleNestedName(GlobalDecl GD, | |||
1557 | const DeclContext *DC, | |||
1558 | const AbiTagList *AdditionalAbiTags, | |||
1559 | bool NoFunction) { | |||
1560 | const NamedDecl *ND = cast<NamedDecl>(GD.getDecl()); | |||
1561 | // <nested-name> | |||
1562 | // ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E | |||
1563 | // ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix> | |||
1564 | // <template-args> E | |||
1565 | ||||
1566 | Out << 'N'; | |||
1567 | if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND)) { | |||
1568 | Qualifiers MethodQuals = Method->getMethodQualifiers(); | |||
1569 | // We do not consider restrict a distinguishing attribute for overloading | |||
1570 | // purposes so we must not mangle it. | |||
1571 | MethodQuals.removeRestrict(); | |||
1572 | mangleQualifiers(MethodQuals); | |||
1573 | mangleRefQualifier(Method->getRefQualifier()); | |||
1574 | } | |||
1575 | ||||
1576 | // Check if we have a template. | |||
1577 | const TemplateArgumentList *TemplateArgs = nullptr; | |||
1578 | if (GlobalDecl TD = isTemplate(GD, TemplateArgs)) { | |||
1579 | mangleTemplatePrefix(TD, NoFunction); | |||
1580 | mangleTemplateArgs(asTemplateName(TD), *TemplateArgs); | |||
1581 | } | |||
1582 | else { | |||
1583 | manglePrefix(DC, NoFunction); | |||
1584 | mangleUnqualifiedName(GD, AdditionalAbiTags); | |||
1585 | } | |||
1586 | ||||
1587 | Out << 'E'; | |||
1588 | } | |||
1589 | void CXXNameMangler::mangleNestedName(const TemplateDecl *TD, | |||
1590 | const TemplateArgument *TemplateArgs, | |||
1591 | unsigned NumTemplateArgs) { | |||
1592 | // <nested-name> ::= N [<CV-qualifiers>] <template-prefix> <template-args> E | |||
1593 | ||||
1594 | Out << 'N'; | |||
1595 | ||||
1596 | mangleTemplatePrefix(TD); | |||
1597 | mangleTemplateArgs(asTemplateName(TD), TemplateArgs, NumTemplateArgs); | |||
1598 | ||||
1599 | Out << 'E'; | |||
1600 | } | |||
1601 | ||||
1602 | static GlobalDecl getParentOfLocalEntity(const DeclContext *DC) { | |||
1603 | GlobalDecl GD; | |||
1604 | // The Itanium spec says: | |||
1605 | // For entities in constructors and destructors, the mangling of the | |||
1606 | // complete object constructor or destructor is used as the base function | |||
1607 | // name, i.e. the C1 or D1 version. | |||
1608 | if (auto *CD = dyn_cast<CXXConstructorDecl>(DC)) | |||
1609 | GD = GlobalDecl(CD, Ctor_Complete); | |||
1610 | else if (auto *DD = dyn_cast<CXXDestructorDecl>(DC)) | |||
1611 | GD = GlobalDecl(DD, Dtor_Complete); | |||
1612 | else | |||
1613 | GD = GlobalDecl(cast<FunctionDecl>(DC)); | |||
1614 | return GD; | |||
1615 | } | |||
1616 | ||||
1617 | void CXXNameMangler::mangleLocalName(GlobalDecl GD, | |||
1618 | const AbiTagList *AdditionalAbiTags) { | |||
1619 | const Decl *D = GD.getDecl(); | |||
1620 | // <local-name> := Z <function encoding> E <entity name> [<discriminator>] | |||
1621 | // := Z <function encoding> E s [<discriminator>] | |||
1622 | // <local-name> := Z <function encoding> E d [ <parameter number> ] | |||
1623 | // _ <entity name> | |||
1624 | // <discriminator> := _ <non-negative number> | |||
1625 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1625, __PRETTY_FUNCTION__)); | |||
1626 | const RecordDecl *RD = GetLocalClassDecl(D); | |||
1627 | const DeclContext *DC = getEffectiveDeclContext(RD ? RD : D); | |||
1628 | ||||
1629 | Out << 'Z'; | |||
1630 | ||||
1631 | { | |||
1632 | AbiTagState LocalAbiTags(AbiTags); | |||
1633 | ||||
1634 | if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(DC)) | |||
1635 | mangleObjCMethodName(MD); | |||
1636 | else if (const BlockDecl *BD = dyn_cast<BlockDecl>(DC)) | |||
1637 | mangleBlockForPrefix(BD); | |||
1638 | else | |||
1639 | mangleFunctionEncoding(getParentOfLocalEntity(DC)); | |||
1640 | ||||
1641 | // Implicit ABI tags (from namespace) are not available in the following | |||
1642 | // entity; reset to actually emitted tags, which are available. | |||
1643 | LocalAbiTags.setUsedAbiTags(LocalAbiTags.getEmittedAbiTags()); | |||
1644 | } | |||
1645 | ||||
1646 | Out << 'E'; | |||
1647 | ||||
1648 | // GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to | |||
1649 | // be a bug that is fixed in trunk. | |||
1650 | ||||
1651 | if (RD) { | |||
1652 | // The parameter number is omitted for the last parameter, 0 for the | |||
1653 | // second-to-last parameter, 1 for the third-to-last parameter, etc. The | |||
1654 | // <entity name> will of course contain a <closure-type-name>: Its | |||
1655 | // numbering will be local to the particular argument in which it appears | |||
1656 | // -- other default arguments do not affect its encoding. | |||
1657 | const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD); | |||
1658 | if (CXXRD && CXXRD->isLambda()) { | |||
1659 | if (const ParmVarDecl *Parm | |||
1660 | = dyn_cast_or_null<ParmVarDecl>(CXXRD->getLambdaContextDecl())) { | |||
1661 | if (const FunctionDecl *Func | |||
1662 | = dyn_cast<FunctionDecl>(Parm->getDeclContext())) { | |||
1663 | Out << 'd'; | |||
1664 | unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex(); | |||
1665 | if (Num > 1) | |||
1666 | mangleNumber(Num - 2); | |||
1667 | Out << '_'; | |||
1668 | } | |||
1669 | } | |||
1670 | } | |||
1671 | ||||
1672 | // Mangle the name relative to the closest enclosing function. | |||
1673 | // equality ok because RD derived from ND above | |||
1674 | if (D == RD) { | |||
1675 | mangleUnqualifiedName(RD, AdditionalAbiTags); | |||
1676 | } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) { | |||
1677 | manglePrefix(getEffectiveDeclContext(BD), true /*NoFunction*/); | |||
1678 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1678, __PRETTY_FUNCTION__)); | |||
1679 | mangleUnqualifiedBlock(BD); | |||
1680 | } else { | |||
1681 | const NamedDecl *ND = cast<NamedDecl>(D); | |||
1682 | mangleNestedName(GD, getEffectiveDeclContext(ND), AdditionalAbiTags, | |||
1683 | true /*NoFunction*/); | |||
1684 | } | |||
1685 | } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) { | |||
1686 | // Mangle a block in a default parameter; see above explanation for | |||
1687 | // lambdas. | |||
1688 | if (const ParmVarDecl *Parm | |||
1689 | = dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl())) { | |||
1690 | if (const FunctionDecl *Func | |||
1691 | = dyn_cast<FunctionDecl>(Parm->getDeclContext())) { | |||
1692 | Out << 'd'; | |||
1693 | unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex(); | |||
1694 | if (Num > 1) | |||
1695 | mangleNumber(Num - 2); | |||
1696 | Out << '_'; | |||
1697 | } | |||
1698 | } | |||
1699 | ||||
1700 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1700, __PRETTY_FUNCTION__)); | |||
1701 | mangleUnqualifiedBlock(BD); | |||
1702 | } else { | |||
1703 | mangleUnqualifiedName(GD, AdditionalAbiTags); | |||
1704 | } | |||
1705 | ||||
1706 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(RD ? RD : D)) { | |||
1707 | unsigned disc; | |||
1708 | if (Context.getNextDiscriminator(ND, disc)) { | |||
1709 | if (disc < 10) | |||
1710 | Out << '_' << disc; | |||
1711 | else | |||
1712 | Out << "__" << disc << '_'; | |||
1713 | } | |||
1714 | } | |||
1715 | } | |||
1716 | ||||
1717 | void CXXNameMangler::mangleBlockForPrefix(const BlockDecl *Block) { | |||
1718 | if (GetLocalClassDecl(Block)) { | |||
1719 | mangleLocalName(Block, /* AdditionalAbiTags */ nullptr); | |||
1720 | return; | |||
1721 | } | |||
1722 | const DeclContext *DC = getEffectiveDeclContext(Block); | |||
1723 | if (isLocalContainerContext(DC)) { | |||
1724 | mangleLocalName(Block, /* AdditionalAbiTags */ nullptr); | |||
1725 | return; | |||
1726 | } | |||
1727 | manglePrefix(getEffectiveDeclContext(Block)); | |||
1728 | mangleUnqualifiedBlock(Block); | |||
1729 | } | |||
1730 | ||||
1731 | void CXXNameMangler::mangleUnqualifiedBlock(const BlockDecl *Block) { | |||
1732 | if (Decl *Context = Block->getBlockManglingContextDecl()) { | |||
1733 | if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) && | |||
1734 | Context->getDeclContext()->isRecord()) { | |||
1735 | const auto *ND = cast<NamedDecl>(Context); | |||
1736 | if (ND->getIdentifier()) { | |||
1737 | mangleSourceNameWithAbiTags(ND); | |||
1738 | Out << 'M'; | |||
1739 | } | |||
1740 | } | |||
1741 | } | |||
1742 | ||||
1743 | // If we have a block mangling number, use it. | |||
1744 | unsigned Number = Block->getBlockManglingNumber(); | |||
1745 | // Otherwise, just make up a number. It doesn't matter what it is because | |||
1746 | // the symbol in question isn't externally visible. | |||
1747 | if (!Number) | |||
1748 | Number = Context.getBlockId(Block, false); | |||
1749 | else { | |||
1750 | // Stored mangling numbers are 1-based. | |||
1751 | --Number; | |||
1752 | } | |||
1753 | Out << "Ub"; | |||
1754 | if (Number > 0) | |||
1755 | Out << Number - 1; | |||
1756 | Out << '_'; | |||
1757 | } | |||
1758 | ||||
1759 | // <template-param-decl> | |||
1760 | // ::= Ty # template type parameter | |||
1761 | // ::= Tn <type> # template non-type parameter | |||
1762 | // ::= Tt <template-param-decl>* E # template template parameter | |||
1763 | // ::= Tp <template-param-decl> # template parameter pack | |||
1764 | void CXXNameMangler::mangleTemplateParamDecl(const NamedDecl *Decl) { | |||
1765 | if (auto *Ty = dyn_cast<TemplateTypeParmDecl>(Decl)) { | |||
1766 | if (Ty->isParameterPack()) | |||
1767 | Out << "Tp"; | |||
1768 | Out << "Ty"; | |||
1769 | } else if (auto *Tn = dyn_cast<NonTypeTemplateParmDecl>(Decl)) { | |||
1770 | if (Tn->isExpandedParameterPack()) { | |||
1771 | for (unsigned I = 0, N = Tn->getNumExpansionTypes(); I != N; ++I) { | |||
1772 | Out << "Tn"; | |||
1773 | mangleType(Tn->getExpansionType(I)); | |||
1774 | } | |||
1775 | } else { | |||
1776 | QualType T = Tn->getType(); | |||
1777 | if (Tn->isParameterPack()) { | |||
1778 | Out << "Tp"; | |||
1779 | if (auto *PackExpansion = T->getAs<PackExpansionType>()) | |||
1780 | T = PackExpansion->getPattern(); | |||
1781 | } | |||
1782 | Out << "Tn"; | |||
1783 | mangleType(T); | |||
1784 | } | |||
1785 | } else if (auto *Tt = dyn_cast<TemplateTemplateParmDecl>(Decl)) { | |||
1786 | if (Tt->isExpandedParameterPack()) { | |||
1787 | for (unsigned I = 0, N = Tt->getNumExpansionTemplateParameters(); I != N; | |||
1788 | ++I) { | |||
1789 | Out << "Tt"; | |||
1790 | for (auto *Param : *Tt->getExpansionTemplateParameters(I)) | |||
1791 | mangleTemplateParamDecl(Param); | |||
1792 | Out << "E"; | |||
1793 | } | |||
1794 | } else { | |||
1795 | if (Tt->isParameterPack()) | |||
1796 | Out << "Tp"; | |||
1797 | Out << "Tt"; | |||
1798 | for (auto *Param : *Tt->getTemplateParameters()) | |||
1799 | mangleTemplateParamDecl(Param); | |||
1800 | Out << "E"; | |||
1801 | } | |||
1802 | } | |||
1803 | } | |||
1804 | ||||
1805 | void CXXNameMangler::mangleLambda(const CXXRecordDecl *Lambda) { | |||
1806 | // If the context of a closure type is an initializer for a class member | |||
1807 | // (static or nonstatic), it is encoded in a qualified name with a final | |||
1808 | // <prefix> of the form: | |||
1809 | // | |||
1810 | // <data-member-prefix> := <member source-name> M | |||
1811 | // | |||
1812 | // Technically, the data-member-prefix is part of the <prefix>. However, | |||
1813 | // since a closure type will always be mangled with a prefix, it's easier | |||
1814 | // to emit that last part of the prefix here. | |||
1815 | if (Decl *Context = Lambda->getLambdaContextDecl()) { | |||
1816 | if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) && | |||
1817 | !isa<ParmVarDecl>(Context)) { | |||
1818 | // FIXME: 'inline auto [a, b] = []{ return ... };' does not get a | |||
1819 | // reasonable mangling here. | |||
1820 | if (const IdentifierInfo *Name | |||
1821 | = cast<NamedDecl>(Context)->getIdentifier()) { | |||
1822 | mangleSourceName(Name); | |||
1823 | const TemplateArgumentList *TemplateArgs = nullptr; | |||
1824 | if (GlobalDecl TD = isTemplate(cast<NamedDecl>(Context), TemplateArgs)) | |||
1825 | mangleTemplateArgs(asTemplateName(TD), *TemplateArgs); | |||
1826 | Out << 'M'; | |||
1827 | } | |||
1828 | } | |||
1829 | } | |||
1830 | ||||
1831 | Out << "Ul"; | |||
1832 | mangleLambdaSig(Lambda); | |||
1833 | Out << "E"; | |||
1834 | ||||
1835 | // The number is omitted for the first closure type with a given | |||
1836 | // <lambda-sig> in a given context; it is n-2 for the nth closure type | |||
1837 | // (in lexical order) with that same <lambda-sig> and context. | |||
1838 | // | |||
1839 | // The AST keeps track of the number for us. | |||
1840 | unsigned Number = Lambda->getLambdaManglingNumber(); | |||
1841 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1841, __PRETTY_FUNCTION__)); | |||
1842 | if (Number > 1) | |||
1843 | mangleNumber(Number - 2); | |||
1844 | Out << '_'; | |||
1845 | } | |||
1846 | ||||
1847 | void CXXNameMangler::mangleLambdaSig(const CXXRecordDecl *Lambda) { | |||
1848 | for (auto *D : Lambda->getLambdaExplicitTemplateParameters()) | |||
1849 | mangleTemplateParamDecl(D); | |||
1850 | auto *Proto = | |||
1851 | Lambda->getLambdaTypeInfo()->getType()->castAs<FunctionProtoType>(); | |||
1852 | mangleBareFunctionType(Proto, /*MangleReturnType=*/false, | |||
1853 | Lambda->getLambdaStaticInvoker()); | |||
1854 | } | |||
1855 | ||||
1856 | void CXXNameMangler::manglePrefix(NestedNameSpecifier *qualifier) { | |||
1857 | switch (qualifier->getKind()) { | |||
1858 | case NestedNameSpecifier::Global: | |||
1859 | // nothing | |||
1860 | return; | |||
1861 | ||||
1862 | case NestedNameSpecifier::Super: | |||
1863 | llvm_unreachable("Can't mangle __super specifier")::llvm::llvm_unreachable_internal("Can't mangle __super specifier" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1863); | |||
1864 | ||||
1865 | case NestedNameSpecifier::Namespace: | |||
1866 | mangleName(qualifier->getAsNamespace()); | |||
1867 | return; | |||
1868 | ||||
1869 | case NestedNameSpecifier::NamespaceAlias: | |||
1870 | mangleName(qualifier->getAsNamespaceAlias()->getNamespace()); | |||
1871 | return; | |||
1872 | ||||
1873 | case NestedNameSpecifier::TypeSpec: | |||
1874 | case NestedNameSpecifier::TypeSpecWithTemplate: | |||
1875 | manglePrefix(QualType(qualifier->getAsType(), 0)); | |||
1876 | return; | |||
1877 | ||||
1878 | case NestedNameSpecifier::Identifier: | |||
1879 | // Member expressions can have these without prefixes, but that | |||
1880 | // should end up in mangleUnresolvedPrefix instead. | |||
1881 | assert(qualifier->getPrefix())((qualifier->getPrefix()) ? static_cast<void> (0) : __assert_fail ("qualifier->getPrefix()", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1881, __PRETTY_FUNCTION__)); | |||
1882 | manglePrefix(qualifier->getPrefix()); | |||
1883 | ||||
1884 | mangleSourceName(qualifier->getAsIdentifier()); | |||
1885 | return; | |||
1886 | } | |||
1887 | ||||
1888 | llvm_unreachable("unexpected nested name specifier")::llvm::llvm_unreachable_internal("unexpected nested name specifier" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1888); | |||
1889 | } | |||
1890 | ||||
1891 | void CXXNameMangler::manglePrefix(const DeclContext *DC, bool NoFunction) { | |||
1892 | // <prefix> ::= <prefix> <unqualified-name> | |||
1893 | // ::= <template-prefix> <template-args> | |||
1894 | // ::= <template-param> | |||
1895 | // ::= # empty | |||
1896 | // ::= <substitution> | |||
1897 | ||||
1898 | DC = IgnoreLinkageSpecDecls(DC); | |||
1899 | ||||
1900 | if (DC->isTranslationUnit()) | |||
1901 | return; | |||
1902 | ||||
1903 | if (NoFunction && isLocalContainerContext(DC)) | |||
1904 | return; | |||
1905 | ||||
1906 | assert(!isLocalContainerContext(DC))((!isLocalContainerContext(DC)) ? static_cast<void> (0) : __assert_fail ("!isLocalContainerContext(DC)", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1906, __PRETTY_FUNCTION__)); | |||
1907 | ||||
1908 | const NamedDecl *ND = cast<NamedDecl>(DC); | |||
1909 | if (mangleSubstitution(ND)) | |||
1910 | return; | |||
1911 | ||||
1912 | // Check if we have a template. | |||
1913 | const TemplateArgumentList *TemplateArgs = nullptr; | |||
1914 | if (GlobalDecl TD = isTemplate(ND, TemplateArgs)) { | |||
1915 | mangleTemplatePrefix(TD); | |||
1916 | mangleTemplateArgs(asTemplateName(TD), *TemplateArgs); | |||
1917 | } else { | |||
1918 | manglePrefix(getEffectiveDeclContext(ND), NoFunction); | |||
1919 | mangleUnqualifiedName(ND, nullptr); | |||
1920 | } | |||
1921 | ||||
1922 | addSubstitution(ND); | |||
1923 | } | |||
1924 | ||||
1925 | void CXXNameMangler::mangleTemplatePrefix(TemplateName Template) { | |||
1926 | // <template-prefix> ::= <prefix> <template unqualified-name> | |||
1927 | // ::= <template-param> | |||
1928 | // ::= <substitution> | |||
1929 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) | |||
1930 | return mangleTemplatePrefix(TD); | |||
1931 | ||||
1932 | DependentTemplateName *Dependent = Template.getAsDependentTemplateName(); | |||
1933 | assert(Dependent && "unexpected template name kind")((Dependent && "unexpected template name kind") ? static_cast <void> (0) : __assert_fail ("Dependent && \"unexpected template name kind\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 1933, __PRETTY_FUNCTION__)); | |||
1934 | ||||
1935 | // Clang 11 and before mangled the substitution for a dependent template name | |||
1936 | // after already having emitted (a substitution for) the prefix. | |||
1937 | bool Clang11Compat = getASTContext().getLangOpts().getClangABICompat() <= | |||
1938 | LangOptions::ClangABI::Ver11; | |||
1939 | if (!Clang11Compat && mangleSubstitution(Template)) | |||
1940 | return; | |||
1941 | ||||
1942 | if (NestedNameSpecifier *Qualifier = Dependent->getQualifier()) | |||
1943 | manglePrefix(Qualifier); | |||
1944 | ||||
1945 | if (Clang11Compat && mangleSubstitution(Template)) | |||
1946 | return; | |||
1947 | ||||
1948 | if (const IdentifierInfo *Id = Dependent->getIdentifier()) | |||
1949 | mangleSourceName(Id); | |||
1950 | else | |||
1951 | mangleOperatorName(Dependent->getOperator(), UnknownArity); | |||
1952 | ||||
1953 | addSubstitution(Template); | |||
1954 | } | |||
1955 | ||||
1956 | void CXXNameMangler::mangleTemplatePrefix(GlobalDecl GD, | |||
1957 | bool NoFunction) { | |||
1958 | const TemplateDecl *ND = cast<TemplateDecl>(GD.getDecl()); | |||
1959 | // <template-prefix> ::= <prefix> <template unqualified-name> | |||
1960 | // ::= <template-param> | |||
1961 | // ::= <substitution> | |||
1962 | // <template-template-param> ::= <template-param> | |||
1963 | // <substitution> | |||
1964 | ||||
1965 | if (mangleSubstitution(ND)) | |||
1966 | return; | |||
1967 | ||||
1968 | // <template-template-param> ::= <template-param> | |||
1969 | if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) { | |||
1970 | mangleTemplateParameter(TTP->getDepth(), TTP->getIndex()); | |||
1971 | } else { | |||
1972 | manglePrefix(getEffectiveDeclContext(ND), NoFunction); | |||
1973 | if (isa<BuiltinTemplateDecl>(ND) || isa<ConceptDecl>(ND)) | |||
1974 | mangleUnqualifiedName(GD, nullptr); | |||
1975 | else | |||
1976 | mangleUnqualifiedName(GD.getWithDecl(ND->getTemplatedDecl()), nullptr); | |||
1977 | } | |||
1978 | ||||
1979 | addSubstitution(ND); | |||
1980 | } | |||
1981 | ||||
1982 | /// Mangles a template name under the production <type>. Required for | |||
1983 | /// template template arguments. | |||
1984 | /// <type> ::= <class-enum-type> | |||
1985 | /// ::= <template-param> | |||
1986 | /// ::= <substitution> | |||
1987 | void CXXNameMangler::mangleType(TemplateName TN) { | |||
1988 | if (mangleSubstitution(TN)) | |||
1989 | return; | |||
1990 | ||||
1991 | TemplateDecl *TD = nullptr; | |||
1992 | ||||
1993 | switch (TN.getKind()) { | |||
1994 | case TemplateName::QualifiedTemplate: | |||
1995 | TD = TN.getAsQualifiedTemplateName()->getTemplateDecl(); | |||
1996 | goto HaveDecl; | |||
1997 | ||||
1998 | case TemplateName::Template: | |||
1999 | TD = TN.getAsTemplateDecl(); | |||
2000 | goto HaveDecl; | |||
2001 | ||||
2002 | HaveDecl: | |||
2003 | if (auto *TTP = dyn_cast<TemplateTemplateParmDecl>(TD)) | |||
2004 | mangleTemplateParameter(TTP->getDepth(), TTP->getIndex()); | |||
2005 | else | |||
2006 | mangleName(TD); | |||
2007 | break; | |||
2008 | ||||
2009 | case TemplateName::OverloadedTemplate: | |||
2010 | case TemplateName::AssumedTemplate: | |||
2011 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2011); | |||
2012 | ||||
2013 | case TemplateName::DependentTemplate: { | |||
2014 | const DependentTemplateName *Dependent = TN.getAsDependentTemplateName(); | |||
2015 | assert(Dependent->isIdentifier())((Dependent->isIdentifier()) ? static_cast<void> (0) : __assert_fail ("Dependent->isIdentifier()", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2015, __PRETTY_FUNCTION__)); | |||
2016 | ||||
2017 | // <class-enum-type> ::= <name> | |||
2018 | // <name> ::= <nested-name> | |||
2019 | mangleUnresolvedPrefix(Dependent->getQualifier()); | |||
2020 | mangleSourceName(Dependent->getIdentifier()); | |||
2021 | break; | |||
2022 | } | |||
2023 | ||||
2024 | case TemplateName::SubstTemplateTemplateParm: { | |||
2025 | // Substituted template parameters are mangled as the substituted | |||
2026 | // template. This will check for the substitution twice, which is | |||
2027 | // fine, but we have to return early so that we don't try to *add* | |||
2028 | // the substitution twice. | |||
2029 | SubstTemplateTemplateParmStorage *subst | |||
2030 | = TN.getAsSubstTemplateTemplateParm(); | |||
2031 | mangleType(subst->getReplacement()); | |||
2032 | return; | |||
2033 | } | |||
2034 | ||||
2035 | case TemplateName::SubstTemplateTemplateParmPack: { | |||
2036 | // FIXME: not clear how to mangle this! | |||
2037 | // template <template <class> class T...> class A { | |||
2038 | // template <template <class> class U...> void foo(B<T,U> x...); | |||
2039 | // }; | |||
2040 | Out << "_SUBSTPACK_"; | |||
2041 | break; | |||
2042 | } | |||
2043 | } | |||
2044 | ||||
2045 | addSubstitution(TN); | |||
2046 | } | |||
2047 | ||||
2048 | bool CXXNameMangler::mangleUnresolvedTypeOrSimpleId(QualType Ty, | |||
2049 | StringRef Prefix) { | |||
2050 | // Only certain other types are valid as prefixes; enumerate them. | |||
2051 | switch (Ty->getTypeClass()) { | |||
2052 | case Type::Builtin: | |||
2053 | case Type::Complex: | |||
2054 | case Type::Adjusted: | |||
2055 | case Type::Decayed: | |||
2056 | case Type::Pointer: | |||
2057 | case Type::BlockPointer: | |||
2058 | case Type::LValueReference: | |||
2059 | case Type::RValueReference: | |||
2060 | case Type::MemberPointer: | |||
2061 | case Type::ConstantArray: | |||
2062 | case Type::IncompleteArray: | |||
2063 | case Type::VariableArray: | |||
2064 | case Type::DependentSizedArray: | |||
2065 | case Type::DependentAddressSpace: | |||
2066 | case Type::DependentVector: | |||
2067 | case Type::DependentSizedExtVector: | |||
2068 | case Type::Vector: | |||
2069 | case Type::ExtVector: | |||
2070 | case Type::ConstantMatrix: | |||
2071 | case Type::DependentSizedMatrix: | |||
2072 | case Type::FunctionProto: | |||
2073 | case Type::FunctionNoProto: | |||
2074 | case Type::Paren: | |||
2075 | case Type::Attributed: | |||
2076 | case Type::Auto: | |||
2077 | case Type::DeducedTemplateSpecialization: | |||
2078 | case Type::PackExpansion: | |||
2079 | case Type::ObjCObject: | |||
2080 | case Type::ObjCInterface: | |||
2081 | case Type::ObjCObjectPointer: | |||
2082 | case Type::ObjCTypeParam: | |||
2083 | case Type::Atomic: | |||
2084 | case Type::Pipe: | |||
2085 | case Type::MacroQualified: | |||
2086 | case Type::ExtInt: | |||
2087 | case Type::DependentExtInt: | |||
2088 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2088); | |||
2089 | ||||
2090 | case Type::SubstTemplateTypeParmPack: | |||
2091 | // FIXME: not clear how to mangle this! | |||
2092 | // template <class T...> class A { | |||
2093 | // template <class U...> void foo(decltype(T::foo(U())) x...); | |||
2094 | // }; | |||
2095 | Out << "_SUBSTPACK_"; | |||
2096 | break; | |||
2097 | ||||
2098 | // <unresolved-type> ::= <template-param> | |||
2099 | // ::= <decltype> | |||
2100 | // ::= <template-template-param> <template-args> | |||
2101 | // (this last is not official yet) | |||
2102 | case Type::TypeOfExpr: | |||
2103 | case Type::TypeOf: | |||
2104 | case Type::Decltype: | |||
2105 | case Type::TemplateTypeParm: | |||
2106 | case Type::UnaryTransform: | |||
2107 | case Type::SubstTemplateTypeParm: | |||
2108 | unresolvedType: | |||
2109 | // Some callers want a prefix before the mangled type. | |||
2110 | Out << Prefix; | |||
2111 | ||||
2112 | // This seems to do everything we want. It's not really | |||
2113 | // sanctioned for a substituted template parameter, though. | |||
2114 | mangleType(Ty); | |||
2115 | ||||
2116 | // We never want to print 'E' directly after an unresolved-type, | |||
2117 | // so we return directly. | |||
2118 | return true; | |||
2119 | ||||
2120 | case Type::Typedef: | |||
2121 | mangleSourceNameWithAbiTags(cast<TypedefType>(Ty)->getDecl()); | |||
2122 | break; | |||
2123 | ||||
2124 | case Type::UnresolvedUsing: | |||
2125 | mangleSourceNameWithAbiTags( | |||
2126 | cast<UnresolvedUsingType>(Ty)->getDecl()); | |||
2127 | break; | |||
2128 | ||||
2129 | case Type::Enum: | |||
2130 | case Type::Record: | |||
2131 | mangleSourceNameWithAbiTags(cast<TagType>(Ty)->getDecl()); | |||
2132 | break; | |||
2133 | ||||
2134 | case Type::TemplateSpecialization: { | |||
2135 | const TemplateSpecializationType *TST = | |||
2136 | cast<TemplateSpecializationType>(Ty); | |||
2137 | TemplateName TN = TST->getTemplateName(); | |||
2138 | switch (TN.getKind()) { | |||
2139 | case TemplateName::Template: | |||
2140 | case TemplateName::QualifiedTemplate: { | |||
2141 | TemplateDecl *TD = TN.getAsTemplateDecl(); | |||
2142 | ||||
2143 | // If the base is a template template parameter, this is an | |||
2144 | // unresolved type. | |||
2145 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2145, __PRETTY_FUNCTION__)); | |||
2146 | if (isa<TemplateTemplateParmDecl>(TD)) | |||
2147 | goto unresolvedType; | |||
2148 | ||||
2149 | mangleSourceNameWithAbiTags(TD); | |||
2150 | break; | |||
2151 | } | |||
2152 | ||||
2153 | case TemplateName::OverloadedTemplate: | |||
2154 | case TemplateName::AssumedTemplate: | |||
2155 | case TemplateName::DependentTemplate: | |||
2156 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2156); | |||
2157 | ||||
2158 | case TemplateName::SubstTemplateTemplateParm: { | |||
2159 | SubstTemplateTemplateParmStorage *subst = | |||
2160 | TN.getAsSubstTemplateTemplateParm(); | |||
2161 | mangleExistingSubstitution(subst->getReplacement()); | |||
2162 | break; | |||
2163 | } | |||
2164 | ||||
2165 | case TemplateName::SubstTemplateTemplateParmPack: { | |||
2166 | // FIXME: not clear how to mangle this! | |||
2167 | // template <template <class U> class T...> class A { | |||
2168 | // template <class U...> void foo(decltype(T<U>::foo) x...); | |||
2169 | // }; | |||
2170 | Out << "_SUBSTPACK_"; | |||
2171 | break; | |||
2172 | } | |||
2173 | } | |||
2174 | ||||
2175 | // Note: we don't pass in the template name here. We are mangling the | |||
2176 | // original source-level template arguments, so we shouldn't consider | |||
2177 | // conversions to the corresponding template parameter. | |||
2178 | // FIXME: Other compilers mangle partially-resolved template arguments in | |||
2179 | // unresolved-qualifier-levels. | |||
2180 | mangleTemplateArgs(TemplateName(), TST->getArgs(), TST->getNumArgs()); | |||
2181 | break; | |||
2182 | } | |||
2183 | ||||
2184 | case Type::InjectedClassName: | |||
2185 | mangleSourceNameWithAbiTags( | |||
2186 | cast<InjectedClassNameType>(Ty)->getDecl()); | |||
2187 | break; | |||
2188 | ||||
2189 | case Type::DependentName: | |||
2190 | mangleSourceName(cast<DependentNameType>(Ty)->getIdentifier()); | |||
2191 | break; | |||
2192 | ||||
2193 | case Type::DependentTemplateSpecialization: { | |||
2194 | const DependentTemplateSpecializationType *DTST = | |||
2195 | cast<DependentTemplateSpecializationType>(Ty); | |||
2196 | TemplateName Template = getASTContext().getDependentTemplateName( | |||
2197 | DTST->getQualifier(), DTST->getIdentifier()); | |||
2198 | mangleSourceName(DTST->getIdentifier()); | |||
2199 | mangleTemplateArgs(Template, DTST->getArgs(), DTST->getNumArgs()); | |||
2200 | break; | |||
2201 | } | |||
2202 | ||||
2203 | case Type::Elaborated: | |||
2204 | return mangleUnresolvedTypeOrSimpleId( | |||
2205 | cast<ElaboratedType>(Ty)->getNamedType(), Prefix); | |||
2206 | } | |||
2207 | ||||
2208 | return false; | |||
2209 | } | |||
2210 | ||||
2211 | void CXXNameMangler::mangleOperatorName(DeclarationName Name, unsigned Arity) { | |||
2212 | switch (Name.getNameKind()) { | |||
2213 | case DeclarationName::CXXConstructorName: | |||
2214 | case DeclarationName::CXXDestructorName: | |||
2215 | case DeclarationName::CXXDeductionGuideName: | |||
2216 | case DeclarationName::CXXUsingDirective: | |||
2217 | case DeclarationName::Identifier: | |||
2218 | case DeclarationName::ObjCMultiArgSelector: | |||
2219 | case DeclarationName::ObjCOneArgSelector: | |||
2220 | case DeclarationName::ObjCZeroArgSelector: | |||
2221 | llvm_unreachable("Not an operator name")::llvm::llvm_unreachable_internal("Not an operator name", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2221); | |||
2222 | ||||
2223 | case DeclarationName::CXXConversionFunctionName: | |||
2224 | // <operator-name> ::= cv <type> # (cast) | |||
2225 | Out << "cv"; | |||
2226 | mangleType(Name.getCXXNameType()); | |||
2227 | break; | |||
2228 | ||||
2229 | case DeclarationName::CXXLiteralOperatorName: | |||
2230 | Out << "li"; | |||
2231 | mangleSourceName(Name.getCXXLiteralIdentifier()); | |||
2232 | return; | |||
2233 | ||||
2234 | case DeclarationName::CXXOperatorName: | |||
2235 | mangleOperatorName(Name.getCXXOverloadedOperator(), Arity); | |||
2236 | break; | |||
2237 | } | |||
2238 | } | |||
2239 | ||||
2240 | void | |||
2241 | CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) { | |||
2242 | switch (OO) { | |||
2243 | // <operator-name> ::= nw # new | |||
2244 | case OO_New: Out << "nw"; break; | |||
2245 | // ::= na # new[] | |||
2246 | case OO_Array_New: Out << "na"; break; | |||
2247 | // ::= dl # delete | |||
2248 | case OO_Delete: Out << "dl"; break; | |||
2249 | // ::= da # delete[] | |||
2250 | case OO_Array_Delete: Out << "da"; break; | |||
2251 | // ::= ps # + (unary) | |||
2252 | // ::= pl # + (binary or unknown) | |||
2253 | case OO_Plus: | |||
2254 | Out << (Arity == 1? "ps" : "pl"); break; | |||
2255 | // ::= ng # - (unary) | |||
2256 | // ::= mi # - (binary or unknown) | |||
2257 | case OO_Minus: | |||
2258 | Out << (Arity == 1? "ng" : "mi"); break; | |||
2259 | // ::= ad # & (unary) | |||
2260 | // ::= an # & (binary or unknown) | |||
2261 | case OO_Amp: | |||
2262 | Out << (Arity == 1? "ad" : "an"); break; | |||
2263 | // ::= de # * (unary) | |||
2264 | // ::= ml # * (binary or unknown) | |||
2265 | case OO_Star: | |||
2266 | // Use binary when unknown. | |||
2267 | Out << (Arity == 1? "de" : "ml"); break; | |||
2268 | // ::= co # ~ | |||
2269 | case OO_Tilde: Out << "co"; break; | |||
2270 | // ::= dv # / | |||
2271 | case OO_Slash: Out << "dv"; break; | |||
2272 | // ::= rm # % | |||
2273 | case OO_Percent: Out << "rm"; break; | |||
2274 | // ::= or # | | |||
2275 | case OO_Pipe: Out << "or"; break; | |||
2276 | // ::= eo # ^ | |||
2277 | case OO_Caret: Out << "eo"; break; | |||
2278 | // ::= aS # = | |||
2279 | case OO_Equal: Out << "aS"; break; | |||
2280 | // ::= pL # += | |||
2281 | case OO_PlusEqual: Out << "pL"; break; | |||
2282 | // ::= mI # -= | |||
2283 | case OO_MinusEqual: Out << "mI"; break; | |||
2284 | // ::= mL # *= | |||
2285 | case OO_StarEqual: Out << "mL"; break; | |||
2286 | // ::= dV # /= | |||
2287 | case OO_SlashEqual: Out << "dV"; break; | |||
2288 | // ::= rM # %= | |||
2289 | case OO_PercentEqual: Out << "rM"; break; | |||
2290 | // ::= aN # &= | |||
2291 | case OO_AmpEqual: Out << "aN"; break; | |||
2292 | // ::= oR # |= | |||
2293 | case OO_PipeEqual: Out << "oR"; break; | |||
2294 | // ::= eO # ^= | |||
2295 | case OO_CaretEqual: Out << "eO"; break; | |||
2296 | // ::= ls # << | |||
2297 | case OO_LessLess: Out << "ls"; break; | |||
2298 | // ::= rs # >> | |||
2299 | case OO_GreaterGreater: Out << "rs"; break; | |||
2300 | // ::= lS # <<= | |||
2301 | case OO_LessLessEqual: Out << "lS"; break; | |||
2302 | // ::= rS # >>= | |||
2303 | case OO_GreaterGreaterEqual: Out << "rS"; break; | |||
2304 | // ::= eq # == | |||
2305 | case OO_EqualEqual: Out << "eq"; break; | |||
2306 | // ::= ne # != | |||
2307 | case OO_ExclaimEqual: Out << "ne"; break; | |||
2308 | // ::= lt # < | |||
2309 | case OO_Less: Out << "lt"; break; | |||
2310 | // ::= gt # > | |||
2311 | case OO_Greater: Out << "gt"; break; | |||
2312 | // ::= le # <= | |||
2313 | case OO_LessEqual: Out << "le"; break; | |||
2314 | // ::= ge # >= | |||
2315 | case OO_GreaterEqual: Out << "ge"; break; | |||
2316 | // ::= nt # ! | |||
2317 | case OO_Exclaim: Out << "nt"; break; | |||
2318 | // ::= aa # && | |||
2319 | case OO_AmpAmp: Out << "aa"; break; | |||
2320 | // ::= oo # || | |||
2321 | case OO_PipePipe: Out << "oo"; break; | |||
2322 | // ::= pp # ++ | |||
2323 | case OO_PlusPlus: Out << "pp"; break; | |||
2324 | // ::= mm # -- | |||
2325 | case OO_MinusMinus: Out << "mm"; break; | |||
2326 | // ::= cm # , | |||
2327 | case OO_Comma: Out << "cm"; break; | |||
2328 | // ::= pm # ->* | |||
2329 | case OO_ArrowStar: Out << "pm"; break; | |||
2330 | // ::= pt # -> | |||
2331 | case OO_Arrow: Out << "pt"; break; | |||
2332 | // ::= cl # () | |||
2333 | case OO_Call: Out << "cl"; break; | |||
2334 | // ::= ix # [] | |||
2335 | case OO_Subscript: Out << "ix"; break; | |||
2336 | ||||
2337 | // ::= qu # ? | |||
2338 | // The conditional operator can't be overloaded, but we still handle it when | |||
2339 | // mangling expressions. | |||
2340 | case OO_Conditional: Out << "qu"; break; | |||
2341 | // Proposal on cxx-abi-dev, 2015-10-21. | |||
2342 | // ::= aw # co_await | |||
2343 | case OO_Coawait: Out << "aw"; break; | |||
2344 | // Proposed in cxx-abi github issue 43. | |||
2345 | // ::= ss # <=> | |||
2346 | case OO_Spaceship: Out << "ss"; break; | |||
2347 | ||||
2348 | case OO_None: | |||
2349 | case NUM_OVERLOADED_OPERATORS: | |||
2350 | llvm_unreachable("Not an overloaded operator")::llvm::llvm_unreachable_internal("Not an overloaded operator" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2350); | |||
2351 | } | |||
2352 | } | |||
2353 | ||||
2354 | void CXXNameMangler::mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST) { | |||
2355 | // Vendor qualifiers come first and if they are order-insensitive they must | |||
2356 | // be emitted in reversed alphabetical order, see Itanium ABI 5.1.5. | |||
2357 | ||||
2358 | // <type> ::= U <addrspace-expr> | |||
2359 | if (DAST) { | |||
2360 | Out << "U2ASI"; | |||
2361 | mangleExpression(DAST->getAddrSpaceExpr()); | |||
2362 | Out << "E"; | |||
2363 | } | |||
2364 | ||||
2365 | // Address space qualifiers start with an ordinary letter. | |||
2366 | if (Quals.hasAddressSpace()) { | |||
2367 | // Address space extension: | |||
2368 | // | |||
2369 | // <type> ::= U <target-addrspace> | |||
2370 | // <type> ::= U <OpenCL-addrspace> | |||
2371 | // <type> ::= U <CUDA-addrspace> | |||
2372 | ||||
2373 | SmallString<64> ASString; | |||
2374 | LangAS AS = Quals.getAddressSpace(); | |||
2375 | ||||
2376 | if (Context.getASTContext().addressSpaceMapManglingFor(AS)) { | |||
2377 | // <target-addrspace> ::= "AS" <address-space-number> | |||
2378 | unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS); | |||
2379 | if (TargetAS != 0) | |||
2380 | ASString = "AS" + llvm::utostr(TargetAS); | |||
2381 | } else { | |||
2382 | switch (AS) { | |||
2383 | default: llvm_unreachable("Not a language specific address space")::llvm::llvm_unreachable_internal("Not a language specific address space" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2383); | |||
2384 | // <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" | | |||
2385 | // "private"| "generic" | "device" | | |||
2386 | // "host" ] | |||
2387 | case LangAS::opencl_global: | |||
2388 | ASString = "CLglobal"; | |||
2389 | break; | |||
2390 | case LangAS::opencl_global_device: | |||
2391 | ASString = "CLdevice"; | |||
2392 | break; | |||
2393 | case LangAS::opencl_global_host: | |||
2394 | ASString = "CLhost"; | |||
2395 | break; | |||
2396 | case LangAS::opencl_local: | |||
2397 | ASString = "CLlocal"; | |||
2398 | break; | |||
2399 | case LangAS::opencl_constant: | |||
2400 | ASString = "CLconstant"; | |||
2401 | break; | |||
2402 | case LangAS::opencl_private: | |||
2403 | ASString = "CLprivate"; | |||
2404 | break; | |||
2405 | case LangAS::opencl_generic: | |||
2406 | ASString = "CLgeneric"; | |||
2407 | break; | |||
2408 | // <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ] | |||
2409 | case LangAS::cuda_device: | |||
2410 | ASString = "CUdevice"; | |||
2411 | break; | |||
2412 | case LangAS::cuda_constant: | |||
2413 | ASString = "CUconstant"; | |||
2414 | break; | |||
2415 | case LangAS::cuda_shared: | |||
2416 | ASString = "CUshared"; | |||
2417 | break; | |||
2418 | // <ptrsize-addrspace> ::= [ "ptr32_sptr" | "ptr32_uptr" | "ptr64" ] | |||
2419 | case LangAS::ptr32_sptr: | |||
2420 | ASString = "ptr32_sptr"; | |||
2421 | break; | |||
2422 | case LangAS::ptr32_uptr: | |||
2423 | ASString = "ptr32_uptr"; | |||
2424 | break; | |||
2425 | case LangAS::ptr64: | |||
2426 | ASString = "ptr64"; | |||
2427 | break; | |||
2428 | } | |||
2429 | } | |||
2430 | if (!ASString.empty()) | |||
2431 | mangleVendorQualifier(ASString); | |||
2432 | } | |||
2433 | ||||
2434 | // The ARC ownership qualifiers start with underscores. | |||
2435 | // Objective-C ARC Extension: | |||
2436 | // | |||
2437 | // <type> ::= U "__strong" | |||
2438 | // <type> ::= U "__weak" | |||
2439 | // <type> ::= U "__autoreleasing" | |||
2440 | // | |||
2441 | // Note: we emit __weak first to preserve the order as | |||
2442 | // required by the Itanium ABI. | |||
2443 | if (Quals.getObjCLifetime() == Qualifiers::OCL_Weak) | |||
2444 | mangleVendorQualifier("__weak"); | |||
2445 | ||||
2446 | // __unaligned (from -fms-extensions) | |||
2447 | if (Quals.hasUnaligned()) | |||
2448 | mangleVendorQualifier("__unaligned"); | |||
2449 | ||||
2450 | // Remaining ARC ownership qualifiers. | |||
2451 | switch (Quals.getObjCLifetime()) { | |||
2452 | case Qualifiers::OCL_None: | |||
2453 | break; | |||
2454 | ||||
2455 | case Qualifiers::OCL_Weak: | |||
2456 | // Do nothing as we already handled this case above. | |||
2457 | break; | |||
2458 | ||||
2459 | case Qualifiers::OCL_Strong: | |||
2460 | mangleVendorQualifier("__strong"); | |||
2461 | break; | |||
2462 | ||||
2463 | case Qualifiers::OCL_Autoreleasing: | |||
2464 | mangleVendorQualifier("__autoreleasing"); | |||
2465 | break; | |||
2466 | ||||
2467 | case Qualifiers::OCL_ExplicitNone: | |||
2468 | // The __unsafe_unretained qualifier is *not* mangled, so that | |||
2469 | // __unsafe_unretained types in ARC produce the same manglings as the | |||
2470 | // equivalent (but, naturally, unqualified) types in non-ARC, providing | |||
2471 | // better ABI compatibility. | |||
2472 | // | |||
2473 | // It's safe to do this because unqualified 'id' won't show up | |||
2474 | // in any type signatures that need to be mangled. | |||
2475 | break; | |||
2476 | } | |||
2477 | ||||
2478 | // <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const | |||
2479 | if (Quals.hasRestrict()) | |||
2480 | Out << 'r'; | |||
2481 | if (Quals.hasVolatile()) | |||
2482 | Out << 'V'; | |||
2483 | if (Quals.hasConst()) | |||
2484 | Out << 'K'; | |||
2485 | } | |||
2486 | ||||
2487 | void CXXNameMangler::mangleVendorQualifier(StringRef name) { | |||
2488 | Out << 'U' << name.size() << name; | |||
2489 | } | |||
2490 | ||||
2491 | void CXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) { | |||
2492 | // <ref-qualifier> ::= R # lvalue reference | |||
2493 | // ::= O # rvalue-reference | |||
2494 | switch (RefQualifier) { | |||
2495 | case RQ_None: | |||
2496 | break; | |||
2497 | ||||
2498 | case RQ_LValue: | |||
2499 | Out << 'R'; | |||
2500 | break; | |||
2501 | ||||
2502 | case RQ_RValue: | |||
2503 | Out << 'O'; | |||
2504 | break; | |||
2505 | } | |||
2506 | } | |||
2507 | ||||
2508 | void CXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) { | |||
2509 | Context.mangleObjCMethodNameAsSourceName(MD, Out); | |||
2510 | } | |||
2511 | ||||
2512 | static bool isTypeSubstitutable(Qualifiers Quals, const Type *Ty, | |||
2513 | ASTContext &Ctx) { | |||
2514 | if (Quals) | |||
2515 | return true; | |||
2516 | if (Ty->isSpecificBuiltinType(BuiltinType::ObjCSel)) | |||
2517 | return true; | |||
2518 | if (Ty->isOpenCLSpecificType()) | |||
2519 | return true; | |||
2520 | if (Ty->isBuiltinType()) | |||
2521 | return false; | |||
2522 | // Through to Clang 6.0, we accidentally treated undeduced auto types as | |||
2523 | // substitution candidates. | |||
2524 | if (Ctx.getLangOpts().getClangABICompat() > LangOptions::ClangABI::Ver6 && | |||
2525 | isa<AutoType>(Ty)) | |||
2526 | return false; | |||
2527 | // A placeholder type for class template deduction is substitutable with | |||
2528 | // its corresponding template name; this is handled specially when mangling | |||
2529 | // the type. | |||
2530 | if (auto *DeducedTST = Ty->getAs<DeducedTemplateSpecializationType>()) | |||
2531 | if (DeducedTST->getDeducedType().isNull()) | |||
2532 | return false; | |||
2533 | return true; | |||
2534 | } | |||
2535 | ||||
2536 | void CXXNameMangler::mangleType(QualType T) { | |||
2537 | // If our type is instantiation-dependent but not dependent, we mangle | |||
2538 | // it as it was written in the source, removing any top-level sugar. | |||
2539 | // Otherwise, use the canonical type. | |||
2540 | // | |||
2541 | // FIXME: This is an approximation of the instantiation-dependent name | |||
2542 | // mangling rules, since we should really be using the type as written and | |||
2543 | // augmented via semantic analysis (i.e., with implicit conversions and | |||
2544 | // default template arguments) for any instantiation-dependent type. | |||
2545 | // Unfortunately, that requires several changes to our AST: | |||
2546 | // - Instantiation-dependent TemplateSpecializationTypes will need to be | |||
2547 | // uniqued, so that we can handle substitutions properly | |||
2548 | // - Default template arguments will need to be represented in the | |||
2549 | // TemplateSpecializationType, since they need to be mangled even though | |||
2550 | // they aren't written. | |||
2551 | // - Conversions on non-type template arguments need to be expressed, since | |||
2552 | // they can affect the mangling of sizeof/alignof. | |||
2553 | // | |||
2554 | // FIXME: This is wrong when mapping to the canonical type for a dependent | |||
2555 | // type discards instantiation-dependent portions of the type, such as for: | |||
2556 | // | |||
2557 | // template<typename T, int N> void f(T (&)[sizeof(N)]); | |||
2558 | // template<typename T> void f(T() throw(typename T::type)); (pre-C++17) | |||
2559 | // | |||
2560 | // It's also wrong in the opposite direction when instantiation-dependent, | |||
2561 | // canonically-equivalent types differ in some irrelevant portion of inner | |||
2562 | // type sugar. In such cases, we fail to form correct substitutions, eg: | |||
2563 | // | |||
2564 | // template<int N> void f(A<sizeof(N)> *, A<sizeof(N)> (*)); | |||
2565 | // | |||
2566 | // We should instead canonicalize the non-instantiation-dependent parts, | |||
2567 | // regardless of whether the type as a whole is dependent or instantiation | |||
2568 | // dependent. | |||
2569 | if (!T->isInstantiationDependentType() || T->isDependentType()) | |||
2570 | T = T.getCanonicalType(); | |||
2571 | else { | |||
2572 | // Desugar any types that are purely sugar. | |||
2573 | do { | |||
2574 | // Don't desugar through template specialization types that aren't | |||
2575 | // type aliases. We need to mangle the template arguments as written. | |||
2576 | if (const TemplateSpecializationType *TST | |||
2577 | = dyn_cast<TemplateSpecializationType>(T)) | |||
2578 | if (!TST->isTypeAlias()) | |||
2579 | break; | |||
2580 | ||||
2581 | // FIXME: We presumably shouldn't strip off ElaboratedTypes with | |||
2582 | // instantation-dependent qualifiers. See | |||
2583 | // https://github.com/itanium-cxx-abi/cxx-abi/issues/114. | |||
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~++20210124100612+2afaf072f5c1/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 | ||||
2645 | void CXXNameMangler::mangleNameOrStandardSubstitution(const NamedDecl *ND) { | |||
2646 | if (!mangleStandardSubstitution(ND)) | |||
2647 | mangleName(ND); | |||
2648 | } | |||
2649 | ||||
2650 | void 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~++20210124100612+2afaf072f5c1/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~++20210124100612+2afaf072f5c1/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 | #define PPC_VECTOR_TYPE(Name, Id, Size) \ | |||
2866 | case BuiltinType::Id: \ | |||
2867 | type_name = #Name; \ | |||
2868 | Out << 'u' << type_name.size() << type_name; \ | |||
2869 | break; | |||
2870 | #include "clang/Basic/PPCTypes.def" | |||
2871 | } | |||
2872 | } | |||
2873 | ||||
2874 | StringRef CXXNameMangler::getCallingConvQualifierName(CallingConv CC) { | |||
2875 | switch (CC) { | |||
2876 | case CC_C: | |||
2877 | return ""; | |||
2878 | ||||
2879 | case CC_X86VectorCall: | |||
2880 | case CC_X86Pascal: | |||
2881 | case CC_X86RegCall: | |||
2882 | case CC_AAPCS: | |||
2883 | case CC_AAPCS_VFP: | |||
2884 | case CC_AArch64VectorCall: | |||
2885 | case CC_IntelOclBicc: | |||
2886 | case CC_SpirFunction: | |||
2887 | case CC_OpenCLKernel: | |||
2888 | case CC_PreserveMost: | |||
2889 | case CC_PreserveAll: | |||
2890 | // FIXME: we should be mangling all of the above. | |||
2891 | return ""; | |||
2892 | ||||
2893 | case CC_X86ThisCall: | |||
2894 | // FIXME: To match mingw GCC, thiscall should only be mangled in when it is | |||
2895 | // used explicitly. At this point, we don't have that much information in | |||
2896 | // the AST, since clang tends to bake the convention into the canonical | |||
2897 | // function type. thiscall only rarely used explicitly, so don't mangle it | |||
2898 | // for now. | |||
2899 | return ""; | |||
2900 | ||||
2901 | case CC_X86StdCall: | |||
2902 | return "stdcall"; | |||
2903 | case CC_X86FastCall: | |||
2904 | return "fastcall"; | |||
2905 | case CC_X86_64SysV: | |||
2906 | return "sysv_abi"; | |||
2907 | case CC_Win64: | |||
2908 | return "ms_abi"; | |||
2909 | case CC_Swift: | |||
2910 | return "swiftcall"; | |||
2911 | } | |||
2912 | llvm_unreachable("bad calling convention")::llvm::llvm_unreachable_internal("bad calling convention", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2912); | |||
2913 | } | |||
2914 | ||||
2915 | void CXXNameMangler::mangleExtFunctionInfo(const FunctionType *T) { | |||
2916 | // Fast path. | |||
2917 | if (T->getExtInfo() == FunctionType::ExtInfo()) | |||
2918 | return; | |||
2919 | ||||
2920 | // Vendor-specific qualifiers are emitted in reverse alphabetical order. | |||
2921 | // This will get more complicated in the future if we mangle other | |||
2922 | // things here; but for now, since we mangle ns_returns_retained as | |||
2923 | // a qualifier on the result type, we can get away with this: | |||
2924 | StringRef CCQualifier = getCallingConvQualifierName(T->getExtInfo().getCC()); | |||
2925 | if (!CCQualifier.empty()) | |||
2926 | mangleVendorQualifier(CCQualifier); | |||
2927 | ||||
2928 | // FIXME: regparm | |||
2929 | // FIXME: noreturn | |||
2930 | } | |||
2931 | ||||
2932 | void | |||
2933 | CXXNameMangler::mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo PI) { | |||
2934 | // Vendor-specific qualifiers are emitted in reverse alphabetical order. | |||
2935 | ||||
2936 | // Note that these are *not* substitution candidates. Demanglers might | |||
2937 | // have trouble with this if the parameter type is fully substituted. | |||
2938 | ||||
2939 | switch (PI.getABI()) { | |||
2940 | case ParameterABI::Ordinary: | |||
2941 | break; | |||
2942 | ||||
2943 | // All of these start with "swift", so they come before "ns_consumed". | |||
2944 | case ParameterABI::SwiftContext: | |||
2945 | case ParameterABI::SwiftErrorResult: | |||
2946 | case ParameterABI::SwiftIndirectResult: | |||
2947 | mangleVendorQualifier(getParameterABISpelling(PI.getABI())); | |||
2948 | break; | |||
2949 | } | |||
2950 | ||||
2951 | if (PI.isConsumed()) | |||
2952 | mangleVendorQualifier("ns_consumed"); | |||
2953 | ||||
2954 | if (PI.isNoEscape()) | |||
2955 | mangleVendorQualifier("noescape"); | |||
2956 | } | |||
2957 | ||||
2958 | // <type> ::= <function-type> | |||
2959 | // <function-type> ::= [<CV-qualifiers>] F [Y] | |||
2960 | // <bare-function-type> [<ref-qualifier>] E | |||
2961 | void CXXNameMangler::mangleType(const FunctionProtoType *T) { | |||
2962 | mangleExtFunctionInfo(T); | |||
2963 | ||||
2964 | // Mangle CV-qualifiers, if present. These are 'this' qualifiers, | |||
2965 | // e.g. "const" in "int (A::*)() const". | |||
2966 | mangleQualifiers(T->getMethodQuals()); | |||
2967 | ||||
2968 | // Mangle instantiation-dependent exception-specification, if present, | |||
2969 | // per cxx-abi-dev proposal on 2016-10-11. | |||
2970 | if (T->hasInstantiationDependentExceptionSpec()) { | |||
2971 | if (isComputedNoexcept(T->getExceptionSpecType())) { | |||
2972 | Out << "DO"; | |||
2973 | mangleExpression(T->getNoexceptExpr()); | |||
2974 | Out << "E"; | |||
2975 | } else { | |||
2976 | assert(T->getExceptionSpecType() == EST_Dynamic)((T->getExceptionSpecType() == EST_Dynamic) ? static_cast< void> (0) : __assert_fail ("T->getExceptionSpecType() == EST_Dynamic" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 2976, __PRETTY_FUNCTION__)); | |||
2977 | Out << "Dw"; | |||
2978 | for (auto ExceptTy : T->exceptions()) | |||
2979 | mangleType(ExceptTy); | |||
2980 | Out << "E"; | |||
2981 | } | |||
2982 | } else if (T->isNothrow()) { | |||
2983 | Out << "Do"; | |||
2984 | } | |||
2985 | ||||
2986 | Out << 'F'; | |||
2987 | ||||
2988 | // FIXME: We don't have enough information in the AST to produce the 'Y' | |||
2989 | // encoding for extern "C" function types. | |||
2990 | mangleBareFunctionType(T, /*MangleReturnType=*/true); | |||
2991 | ||||
2992 | // Mangle the ref-qualifier, if present. | |||
2993 | mangleRefQualifier(T->getRefQualifier()); | |||
2994 | ||||
2995 | Out << 'E'; | |||
2996 | } | |||
2997 | ||||
2998 | void CXXNameMangler::mangleType(const FunctionNoProtoType *T) { | |||
2999 | // Function types without prototypes can arise when mangling a function type | |||
3000 | // within an overloadable function in C. We mangle these as the absence of any | |||
3001 | // parameter types (not even an empty parameter list). | |||
3002 | Out << 'F'; | |||
3003 | ||||
3004 | FunctionTypeDepthState saved = FunctionTypeDepth.push(); | |||
3005 | ||||
3006 | FunctionTypeDepth.enterResultType(); | |||
3007 | mangleType(T->getReturnType()); | |||
3008 | FunctionTypeDepth.leaveResultType(); | |||
3009 | ||||
3010 | FunctionTypeDepth.pop(saved); | |||
3011 | Out << 'E'; | |||
3012 | } | |||
3013 | ||||
3014 | void CXXNameMangler::mangleBareFunctionType(const FunctionProtoType *Proto, | |||
3015 | bool MangleReturnType, | |||
3016 | const FunctionDecl *FD) { | |||
3017 | // Record that we're in a function type. See mangleFunctionParam | |||
3018 | // for details on what we're trying to achieve here. | |||
3019 | FunctionTypeDepthState saved = FunctionTypeDepth.push(); | |||
3020 | ||||
3021 | // <bare-function-type> ::= <signature type>+ | |||
3022 | if (MangleReturnType) { | |||
3023 | FunctionTypeDepth.enterResultType(); | |||
3024 | ||||
3025 | // Mangle ns_returns_retained as an order-sensitive qualifier here. | |||
3026 | if (Proto->getExtInfo().getProducesResult() && FD == nullptr) | |||
3027 | mangleVendorQualifier("ns_returns_retained"); | |||
3028 | ||||
3029 | // Mangle the return type without any direct ARC ownership qualifiers. | |||
3030 | QualType ReturnTy = Proto->getReturnType(); | |||
3031 | if (ReturnTy.getObjCLifetime()) { | |||
3032 | auto SplitReturnTy = ReturnTy.split(); | |||
3033 | SplitReturnTy.Quals.removeObjCLifetime(); | |||
3034 | ReturnTy = getASTContext().getQualifiedType(SplitReturnTy); | |||
3035 | } | |||
3036 | mangleType(ReturnTy); | |||
3037 | ||||
3038 | FunctionTypeDepth.leaveResultType(); | |||
3039 | } | |||
3040 | ||||
3041 | if (Proto->getNumParams() == 0 && !Proto->isVariadic()) { | |||
3042 | // <builtin-type> ::= v # void | |||
3043 | Out << 'v'; | |||
3044 | ||||
3045 | FunctionTypeDepth.pop(saved); | |||
3046 | return; | |||
3047 | } | |||
3048 | ||||
3049 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3049, __PRETTY_FUNCTION__)); | |||
3050 | for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) { | |||
3051 | // Mangle extended parameter info as order-sensitive qualifiers here. | |||
3052 | if (Proto->hasExtParameterInfos() && FD == nullptr) { | |||
3053 | mangleExtParameterInfo(Proto->getExtParameterInfo(I)); | |||
3054 | } | |||
3055 | ||||
3056 | // Mangle the type. | |||
3057 | QualType ParamTy = Proto->getParamType(I); | |||
3058 | mangleType(Context.getASTContext().getSignatureParameterType(ParamTy)); | |||
3059 | ||||
3060 | if (FD) { | |||
3061 | if (auto *Attr = FD->getParamDecl(I)->getAttr<PassObjectSizeAttr>()) { | |||
3062 | // Attr can only take 1 character, so we can hardcode the length below. | |||
3063 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3063, __PRETTY_FUNCTION__)); | |||
3064 | if (Attr->isDynamic()) | |||
3065 | Out << "U25pass_dynamic_object_size" << Attr->getType(); | |||
3066 | else | |||
3067 | Out << "U17pass_object_size" << Attr->getType(); | |||
3068 | } | |||
3069 | } | |||
3070 | } | |||
3071 | ||||
3072 | FunctionTypeDepth.pop(saved); | |||
3073 | ||||
3074 | // <builtin-type> ::= z # ellipsis | |||
3075 | if (Proto->isVariadic()) | |||
3076 | Out << 'z'; | |||
3077 | } | |||
3078 | ||||
3079 | // <type> ::= <class-enum-type> | |||
3080 | // <class-enum-type> ::= <name> | |||
3081 | void CXXNameMangler::mangleType(const UnresolvedUsingType *T) { | |||
3082 | mangleName(T->getDecl()); | |||
3083 | } | |||
3084 | ||||
3085 | // <type> ::= <class-enum-type> | |||
3086 | // <class-enum-type> ::= <name> | |||
3087 | void CXXNameMangler::mangleType(const EnumType *T) { | |||
3088 | mangleType(static_cast<const TagType*>(T)); | |||
3089 | } | |||
3090 | void CXXNameMangler::mangleType(const RecordType *T) { | |||
3091 | mangleType(static_cast<const TagType*>(T)); | |||
3092 | } | |||
3093 | void CXXNameMangler::mangleType(const TagType *T) { | |||
3094 | mangleName(T->getDecl()); | |||
3095 | } | |||
3096 | ||||
3097 | // <type> ::= <array-type> | |||
3098 | // <array-type> ::= A <positive dimension number> _ <element type> | |||
3099 | // ::= A [<dimension expression>] _ <element type> | |||
3100 | void CXXNameMangler::mangleType(const ConstantArrayType *T) { | |||
3101 | Out << 'A' << T->getSize() << '_'; | |||
3102 | mangleType(T->getElementType()); | |||
3103 | } | |||
3104 | void CXXNameMangler::mangleType(const VariableArrayType *T) { | |||
3105 | Out << 'A'; | |||
3106 | // decayed vla types (size 0) will just be skipped. | |||
3107 | if (T->getSizeExpr()) | |||
3108 | mangleExpression(T->getSizeExpr()); | |||
3109 | Out << '_'; | |||
3110 | mangleType(T->getElementType()); | |||
3111 | } | |||
3112 | void CXXNameMangler::mangleType(const DependentSizedArrayType *T) { | |||
3113 | Out << 'A'; | |||
3114 | mangleExpression(T->getSizeExpr()); | |||
3115 | Out << '_'; | |||
3116 | mangleType(T->getElementType()); | |||
3117 | } | |||
3118 | void CXXNameMangler::mangleType(const IncompleteArrayType *T) { | |||
3119 | Out << "A_"; | |||
3120 | mangleType(T->getElementType()); | |||
3121 | } | |||
3122 | ||||
3123 | // <type> ::= <pointer-to-member-type> | |||
3124 | // <pointer-to-member-type> ::= M <class type> <member type> | |||
3125 | void CXXNameMangler::mangleType(const MemberPointerType *T) { | |||
3126 | Out << 'M'; | |||
3127 | mangleType(QualType(T->getClass(), 0)); | |||
3128 | QualType PointeeType = T->getPointeeType(); | |||
3129 | if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) { | |||
3130 | mangleType(FPT); | |||
3131 | ||||
3132 | // Itanium C++ ABI 5.1.8: | |||
3133 | // | |||
3134 | // The type of a non-static member function is considered to be different, | |||
3135 | // for the purposes of substitution, from the type of a namespace-scope or | |||
3136 | // static member function whose type appears similar. The types of two | |||
3137 | // non-static member functions are considered to be different, for the | |||
3138 | // purposes of substitution, if the functions are members of different | |||
3139 | // classes. In other words, for the purposes of substitution, the class of | |||
3140 | // which the function is a member is considered part of the type of | |||
3141 | // function. | |||
3142 | ||||
3143 | // Given that we already substitute member function pointers as a | |||
3144 | // whole, the net effect of this rule is just to unconditionally | |||
3145 | // suppress substitution on the function type in a member pointer. | |||
3146 | // We increment the SeqID here to emulate adding an entry to the | |||
3147 | // substitution table. | |||
3148 | ++SeqID; | |||
3149 | } else | |||
3150 | mangleType(PointeeType); | |||
3151 | } | |||
3152 | ||||
3153 | // <type> ::= <template-param> | |||
3154 | void CXXNameMangler::mangleType(const TemplateTypeParmType *T) { | |||
3155 | mangleTemplateParameter(T->getDepth(), T->getIndex()); | |||
3156 | } | |||
3157 | ||||
3158 | // <type> ::= <template-param> | |||
3159 | void CXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T) { | |||
3160 | // FIXME: not clear how to mangle this! | |||
3161 | // template <class T...> class A { | |||
3162 | // template <class U...> void foo(T(*)(U) x...); | |||
3163 | // }; | |||
3164 | Out << "_SUBSTPACK_"; | |||
3165 | } | |||
3166 | ||||
3167 | // <type> ::= P <type> # pointer-to | |||
3168 | void CXXNameMangler::mangleType(const PointerType *T) { | |||
3169 | Out << 'P'; | |||
3170 | mangleType(T->getPointeeType()); | |||
3171 | } | |||
3172 | void CXXNameMangler::mangleType(const ObjCObjectPointerType *T) { | |||
3173 | Out << 'P'; | |||
3174 | mangleType(T->getPointeeType()); | |||
3175 | } | |||
3176 | ||||
3177 | // <type> ::= R <type> # reference-to | |||
3178 | void CXXNameMangler::mangleType(const LValueReferenceType *T) { | |||
3179 | Out << 'R'; | |||
3180 | mangleType(T->getPointeeType()); | |||
3181 | } | |||
3182 | ||||
3183 | // <type> ::= O <type> # rvalue reference-to (C++0x) | |||
3184 | void CXXNameMangler::mangleType(const RValueReferenceType *T) { | |||
3185 | Out << 'O'; | |||
3186 | mangleType(T->getPointeeType()); | |||
3187 | } | |||
3188 | ||||
3189 | // <type> ::= C <type> # complex pair (C 2000) | |||
3190 | void CXXNameMangler::mangleType(const ComplexType *T) { | |||
3191 | Out << 'C'; | |||
3192 | mangleType(T->getElementType()); | |||
3193 | } | |||
3194 | ||||
3195 | // ARM's ABI for Neon vector types specifies that they should be mangled as | |||
3196 | // if they are structs (to match ARM's initial implementation). The | |||
3197 | // vector type must be one of the special types predefined by ARM. | |||
3198 | void CXXNameMangler::mangleNeonVectorType(const VectorType *T) { | |||
3199 | QualType EltType = T->getElementType(); | |||
3200 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3200, __PRETTY_FUNCTION__)); | |||
3201 | const char *EltName = nullptr; | |||
3202 | if (T->getVectorKind() == VectorType::NeonPolyVector) { | |||
3203 | switch (cast<BuiltinType>(EltType)->getKind()) { | |||
3204 | case BuiltinType::SChar: | |||
3205 | case BuiltinType::UChar: | |||
3206 | EltName = "poly8_t"; | |||
3207 | break; | |||
3208 | case BuiltinType::Short: | |||
3209 | case BuiltinType::UShort: | |||
3210 | EltName = "poly16_t"; | |||
3211 | break; | |||
3212 | case BuiltinType::LongLong: | |||
3213 | case BuiltinType::ULongLong: | |||
3214 | EltName = "poly64_t"; | |||
3215 | break; | |||
3216 | default: llvm_unreachable("unexpected Neon polynomial vector element type")::llvm::llvm_unreachable_internal("unexpected Neon polynomial vector element type" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3216); | |||
3217 | } | |||
3218 | } else { | |||
3219 | switch (cast<BuiltinType>(EltType)->getKind()) { | |||
3220 | case BuiltinType::SChar: EltName = "int8_t"; break; | |||
3221 | case BuiltinType::UChar: EltName = "uint8_t"; break; | |||
3222 | case BuiltinType::Short: EltName = "int16_t"; break; | |||
3223 | case BuiltinType::UShort: EltName = "uint16_t"; break; | |||
3224 | case BuiltinType::Int: EltName = "int32_t"; break; | |||
3225 | case BuiltinType::UInt: EltName = "uint32_t"; break; | |||
3226 | case BuiltinType::LongLong: EltName = "int64_t"; break; | |||
3227 | case BuiltinType::ULongLong: EltName = "uint64_t"; break; | |||
3228 | case BuiltinType::Double: EltName = "float64_t"; break; | |||
3229 | case BuiltinType::Float: EltName = "float32_t"; break; | |||
3230 | case BuiltinType::Half: EltName = "float16_t"; break; | |||
3231 | case BuiltinType::BFloat16: EltName = "bfloat16_t"; break; | |||
3232 | default: | |||
3233 | llvm_unreachable("unexpected Neon vector element type")::llvm::llvm_unreachable_internal("unexpected Neon vector element type" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3233); | |||
3234 | } | |||
3235 | } | |||
3236 | const char *BaseName = nullptr; | |||
3237 | unsigned BitSize = (T->getNumElements() * | |||
3238 | getASTContext().getTypeSize(EltType)); | |||
3239 | if (BitSize == 64) | |||
3240 | BaseName = "__simd64_"; | |||
3241 | else { | |||
3242 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3242, __PRETTY_FUNCTION__)); | |||
3243 | BaseName = "__simd128_"; | |||
3244 | } | |||
3245 | Out << strlen(BaseName) + strlen(EltName); | |||
3246 | Out << BaseName << EltName; | |||
3247 | } | |||
3248 | ||||
3249 | void CXXNameMangler::mangleNeonVectorType(const DependentVectorType *T) { | |||
3250 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
3251 | unsigned DiagID = Diags.getCustomDiagID( | |||
3252 | DiagnosticsEngine::Error, | |||
3253 | "cannot mangle this dependent neon vector type yet"); | |||
3254 | Diags.Report(T->getAttributeLoc(), DiagID); | |||
3255 | } | |||
3256 | ||||
3257 | static StringRef mangleAArch64VectorBase(const BuiltinType *EltType) { | |||
3258 | switch (EltType->getKind()) { | |||
3259 | case BuiltinType::SChar: | |||
3260 | return "Int8"; | |||
3261 | case BuiltinType::Short: | |||
3262 | return "Int16"; | |||
3263 | case BuiltinType::Int: | |||
3264 | return "Int32"; | |||
3265 | case BuiltinType::Long: | |||
3266 | case BuiltinType::LongLong: | |||
3267 | return "Int64"; | |||
3268 | case BuiltinType::UChar: | |||
3269 | return "Uint8"; | |||
3270 | case BuiltinType::UShort: | |||
3271 | return "Uint16"; | |||
3272 | case BuiltinType::UInt: | |||
3273 | return "Uint32"; | |||
3274 | case BuiltinType::ULong: | |||
3275 | case BuiltinType::ULongLong: | |||
3276 | return "Uint64"; | |||
3277 | case BuiltinType::Half: | |||
3278 | return "Float16"; | |||
3279 | case BuiltinType::Float: | |||
3280 | return "Float32"; | |||
3281 | case BuiltinType::Double: | |||
3282 | return "Float64"; | |||
3283 | case BuiltinType::BFloat16: | |||
3284 | return "Bfloat16"; | |||
3285 | default: | |||
3286 | llvm_unreachable("Unexpected vector element base type")::llvm::llvm_unreachable_internal("Unexpected vector element base type" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3286); | |||
3287 | } | |||
3288 | } | |||
3289 | ||||
3290 | // AArch64's ABI for Neon vector types specifies that they should be mangled as | |||
3291 | // the equivalent internal name. The vector type must be one of the special | |||
3292 | // types predefined by ARM. | |||
3293 | void CXXNameMangler::mangleAArch64NeonVectorType(const VectorType *T) { | |||
3294 | QualType EltType = T->getElementType(); | |||
3295 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3295, __PRETTY_FUNCTION__)); | |||
3296 | unsigned BitSize = | |||
3297 | (T->getNumElements() * getASTContext().getTypeSize(EltType)); | |||
3298 | (void)BitSize; // Silence warning. | |||
3299 | ||||
3300 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3301, __PRETTY_FUNCTION__)) | |||
3301 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3301, __PRETTY_FUNCTION__)); | |||
3302 | ||||
3303 | StringRef EltName; | |||
3304 | if (T->getVectorKind() == VectorType::NeonPolyVector) { | |||
3305 | switch (cast<BuiltinType>(EltType)->getKind()) { | |||
3306 | case BuiltinType::UChar: | |||
3307 | EltName = "Poly8"; | |||
3308 | break; | |||
3309 | case BuiltinType::UShort: | |||
3310 | EltName = "Poly16"; | |||
3311 | break; | |||
3312 | case BuiltinType::ULong: | |||
3313 | case BuiltinType::ULongLong: | |||
3314 | EltName = "Poly64"; | |||
3315 | break; | |||
3316 | default: | |||
3317 | llvm_unreachable("unexpected Neon polynomial vector element type")::llvm::llvm_unreachable_internal("unexpected Neon polynomial vector element type" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3317); | |||
3318 | } | |||
3319 | } else | |||
3320 | EltName = mangleAArch64VectorBase(cast<BuiltinType>(EltType)); | |||
3321 | ||||
3322 | std::string TypeName = | |||
3323 | ("__" + EltName + "x" + Twine(T->getNumElements()) + "_t").str(); | |||
3324 | Out << TypeName.length() << TypeName; | |||
3325 | } | |||
3326 | void CXXNameMangler::mangleAArch64NeonVectorType(const DependentVectorType *T) { | |||
3327 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
3328 | unsigned DiagID = Diags.getCustomDiagID( | |||
3329 | DiagnosticsEngine::Error, | |||
3330 | "cannot mangle this dependent neon vector type yet"); | |||
3331 | Diags.Report(T->getAttributeLoc(), DiagID); | |||
3332 | } | |||
3333 | ||||
3334 | // The AArch64 ACLE specifies that fixed-length SVE vector and predicate types | |||
3335 | // defined with the 'arm_sve_vector_bits' attribute map to the same AAPCS64 | |||
3336 | // type as the sizeless variants. | |||
3337 | // | |||
3338 | // The mangling scheme for VLS types is implemented as a "pseudo" template: | |||
3339 | // | |||
3340 | // '__SVE_VLS<<type>, <vector length>>' | |||
3341 | // | |||
3342 | // Combining the existing SVE type and a specific vector length (in bits). | |||
3343 | // For example: | |||
3344 | // | |||
3345 | // typedef __SVInt32_t foo __attribute__((arm_sve_vector_bits(512))); | |||
3346 | // | |||
3347 | // is described as '__SVE_VLS<__SVInt32_t, 512u>' and mangled as: | |||
3348 | // | |||
3349 | // "9__SVE_VLSI" + base type mangling + "Lj" + __ARM_FEATURE_SVE_BITS + "EE" | |||
3350 | // | |||
3351 | // i.e. 9__SVE_VLSIu11__SVInt32_tLj512EE | |||
3352 | // | |||
3353 | // The latest ACLE specification (00bet5) does not contain details of this | |||
3354 | // mangling scheme, it will be specified in the next revision. The mangling | |||
3355 | // scheme is otherwise defined in the appendices to the Procedure Call Standard | |||
3356 | // for the Arm Architecture, see | |||
3357 | // https://github.com/ARM-software/abi-aa/blob/master/aapcs64/aapcs64.rst#appendix-c-mangling | |||
3358 | void CXXNameMangler::mangleAArch64FixedSveVectorType(const VectorType *T) { | |||
3359 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3361, __PRETTY_FUNCTION__)) | |||
3360 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3361, __PRETTY_FUNCTION__)) | |||
3361 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3361, __PRETTY_FUNCTION__)); | |||
3362 | ||||
3363 | QualType EltType = T->getElementType(); | |||
3364 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3365, __PRETTY_FUNCTION__)) | |||
3365 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3365, __PRETTY_FUNCTION__)); | |||
3366 | ||||
3367 | StringRef TypeName; | |||
3368 | switch (cast<BuiltinType>(EltType)->getKind()) { | |||
3369 | case BuiltinType::SChar: | |||
3370 | TypeName = "__SVInt8_t"; | |||
3371 | break; | |||
3372 | case BuiltinType::UChar: { | |||
3373 | if (T->getVectorKind() == VectorType::SveFixedLengthDataVector) | |||
3374 | TypeName = "__SVUint8_t"; | |||
3375 | else | |||
3376 | TypeName = "__SVBool_t"; | |||
3377 | break; | |||
3378 | } | |||
3379 | case BuiltinType::Short: | |||
3380 | TypeName = "__SVInt16_t"; | |||
3381 | break; | |||
3382 | case BuiltinType::UShort: | |||
3383 | TypeName = "__SVUint16_t"; | |||
3384 | break; | |||
3385 | case BuiltinType::Int: | |||
3386 | TypeName = "__SVInt32_t"; | |||
3387 | break; | |||
3388 | case BuiltinType::UInt: | |||
3389 | TypeName = "__SVUint32_t"; | |||
3390 | break; | |||
3391 | case BuiltinType::Long: | |||
3392 | TypeName = "__SVInt64_t"; | |||
3393 | break; | |||
3394 | case BuiltinType::ULong: | |||
3395 | TypeName = "__SVUint64_t"; | |||
3396 | break; | |||
3397 | case BuiltinType::Half: | |||
3398 | TypeName = "__SVFloat16_t"; | |||
3399 | break; | |||
3400 | case BuiltinType::Float: | |||
3401 | TypeName = "__SVFloat32_t"; | |||
3402 | break; | |||
3403 | case BuiltinType::Double: | |||
3404 | TypeName = "__SVFloat64_t"; | |||
3405 | break; | |||
3406 | case BuiltinType::BFloat16: | |||
3407 | TypeName = "__SVBfloat16_t"; | |||
3408 | break; | |||
3409 | default: | |||
3410 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3410); | |||
3411 | } | |||
3412 | ||||
3413 | unsigned VecSizeInBits = getASTContext().getTypeInfo(T).Width; | |||
3414 | ||||
3415 | if (T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) | |||
3416 | VecSizeInBits *= 8; | |||
3417 | ||||
3418 | Out << "9__SVE_VLSI" << 'u' << TypeName.size() << TypeName << "Lj" | |||
3419 | << VecSizeInBits << "EE"; | |||
3420 | } | |||
3421 | ||||
3422 | void CXXNameMangler::mangleAArch64FixedSveVectorType( | |||
3423 | const DependentVectorType *T) { | |||
3424 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
3425 | unsigned DiagID = Diags.getCustomDiagID( | |||
3426 | DiagnosticsEngine::Error, | |||
3427 | "cannot mangle this dependent fixed-length SVE vector type yet"); | |||
3428 | Diags.Report(T->getAttributeLoc(), DiagID); | |||
3429 | } | |||
3430 | ||||
3431 | // GNU extension: vector types | |||
3432 | // <type> ::= <vector-type> | |||
3433 | // <vector-type> ::= Dv <positive dimension number> _ | |||
3434 | // <extended element type> | |||
3435 | // ::= Dv [<dimension expression>] _ <element type> | |||
3436 | // <extended element type> ::= <element type> | |||
3437 | // ::= p # AltiVec vector pixel | |||
3438 | // ::= b # Altivec vector bool | |||
3439 | void CXXNameMangler::mangleType(const VectorType *T) { | |||
3440 | if ((T->getVectorKind() == VectorType::NeonVector || | |||
3441 | T->getVectorKind() == VectorType::NeonPolyVector)) { | |||
3442 | llvm::Triple Target = getASTContext().getTargetInfo().getTriple(); | |||
3443 | llvm::Triple::ArchType Arch = | |||
3444 | getASTContext().getTargetInfo().getTriple().getArch(); | |||
3445 | if ((Arch == llvm::Triple::aarch64 || | |||
3446 | Arch == llvm::Triple::aarch64_be) && !Target.isOSDarwin()) | |||
3447 | mangleAArch64NeonVectorType(T); | |||
3448 | else | |||
3449 | mangleNeonVectorType(T); | |||
3450 | return; | |||
3451 | } else if (T->getVectorKind() == VectorType::SveFixedLengthDataVector || | |||
3452 | T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) { | |||
3453 | mangleAArch64FixedSveVectorType(T); | |||
3454 | return; | |||
3455 | } | |||
3456 | Out << "Dv" << T->getNumElements() << '_'; | |||
3457 | if (T->getVectorKind() == VectorType::AltiVecPixel) | |||
3458 | Out << 'p'; | |||
3459 | else if (T->getVectorKind() == VectorType::AltiVecBool) | |||
3460 | Out << 'b'; | |||
3461 | else | |||
3462 | mangleType(T->getElementType()); | |||
3463 | } | |||
3464 | ||||
3465 | void CXXNameMangler::mangleType(const DependentVectorType *T) { | |||
3466 | if ((T->getVectorKind() == VectorType::NeonVector || | |||
3467 | T->getVectorKind() == VectorType::NeonPolyVector)) { | |||
3468 | llvm::Triple Target = getASTContext().getTargetInfo().getTriple(); | |||
3469 | llvm::Triple::ArchType Arch = | |||
3470 | getASTContext().getTargetInfo().getTriple().getArch(); | |||
3471 | if ((Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_be) && | |||
3472 | !Target.isOSDarwin()) | |||
3473 | mangleAArch64NeonVectorType(T); | |||
3474 | else | |||
3475 | mangleNeonVectorType(T); | |||
3476 | return; | |||
3477 | } else if (T->getVectorKind() == VectorType::SveFixedLengthDataVector || | |||
3478 | T->getVectorKind() == VectorType::SveFixedLengthPredicateVector) { | |||
3479 | mangleAArch64FixedSveVectorType(T); | |||
3480 | return; | |||
3481 | } | |||
3482 | ||||
3483 | Out << "Dv"; | |||
3484 | mangleExpression(T->getSizeExpr()); | |||
3485 | Out << '_'; | |||
3486 | if (T->getVectorKind() == VectorType::AltiVecPixel) | |||
3487 | Out << 'p'; | |||
3488 | else if (T->getVectorKind() == VectorType::AltiVecBool) | |||
3489 | Out << 'b'; | |||
3490 | else | |||
3491 | mangleType(T->getElementType()); | |||
3492 | } | |||
3493 | ||||
3494 | void CXXNameMangler::mangleType(const ExtVectorType *T) { | |||
3495 | mangleType(static_cast<const VectorType*>(T)); | |||
3496 | } | |||
3497 | void CXXNameMangler::mangleType(const DependentSizedExtVectorType *T) { | |||
3498 | Out << "Dv"; | |||
3499 | mangleExpression(T->getSizeExpr()); | |||
3500 | Out << '_'; | |||
3501 | mangleType(T->getElementType()); | |||
3502 | } | |||
3503 | ||||
3504 | void CXXNameMangler::mangleType(const ConstantMatrixType *T) { | |||
3505 | // Mangle matrix types as a vendor extended type: | |||
3506 | // u<Len>matrix_typeI<Rows><Columns><element type>E | |||
3507 | ||||
3508 | StringRef VendorQualifier = "matrix_type"; | |||
3509 | Out << "u" << VendorQualifier.size() << VendorQualifier; | |||
3510 | ||||
3511 | Out << "I"; | |||
3512 | auto &ASTCtx = getASTContext(); | |||
3513 | unsigned BitWidth = ASTCtx.getTypeSize(ASTCtx.getSizeType()); | |||
3514 | llvm::APSInt Rows(BitWidth); | |||
3515 | Rows = T->getNumRows(); | |||
3516 | mangleIntegerLiteral(ASTCtx.getSizeType(), Rows); | |||
3517 | llvm::APSInt Columns(BitWidth); | |||
3518 | Columns = T->getNumColumns(); | |||
3519 | mangleIntegerLiteral(ASTCtx.getSizeType(), Columns); | |||
3520 | mangleType(T->getElementType()); | |||
3521 | Out << "E"; | |||
3522 | } | |||
3523 | ||||
3524 | void CXXNameMangler::mangleType(const DependentSizedMatrixType *T) { | |||
3525 | // Mangle matrix types as a vendor extended type: | |||
3526 | // u<Len>matrix_typeI<row expr><column expr><element type>E | |||
3527 | StringRef VendorQualifier = "matrix_type"; | |||
3528 | Out << "u" << VendorQualifier.size() << VendorQualifier; | |||
3529 | ||||
3530 | Out << "I"; | |||
3531 | mangleTemplateArg(T->getRowExpr(), false); | |||
3532 | mangleTemplateArg(T->getColumnExpr(), false); | |||
3533 | mangleType(T->getElementType()); | |||
3534 | Out << "E"; | |||
3535 | } | |||
3536 | ||||
3537 | void CXXNameMangler::mangleType(const DependentAddressSpaceType *T) { | |||
3538 | SplitQualType split = T->getPointeeType().split(); | |||
3539 | mangleQualifiers(split.Quals, T); | |||
3540 | mangleType(QualType(split.Ty, 0)); | |||
3541 | } | |||
3542 | ||||
3543 | void CXXNameMangler::mangleType(const PackExpansionType *T) { | |||
3544 | // <type> ::= Dp <type> # pack expansion (C++0x) | |||
3545 | Out << "Dp"; | |||
3546 | mangleType(T->getPattern()); | |||
3547 | } | |||
3548 | ||||
3549 | void CXXNameMangler::mangleType(const ObjCInterfaceType *T) { | |||
3550 | mangleSourceName(T->getDecl()->getIdentifier()); | |||
3551 | } | |||
3552 | ||||
3553 | void CXXNameMangler::mangleType(const ObjCObjectType *T) { | |||
3554 | // Treat __kindof as a vendor extended type qualifier. | |||
3555 | if (T->isKindOfType()) | |||
3556 | Out << "U8__kindof"; | |||
3557 | ||||
3558 | if (!T->qual_empty()) { | |||
3559 | // Mangle protocol qualifiers. | |||
3560 | SmallString<64> QualStr; | |||
3561 | llvm::raw_svector_ostream QualOS(QualStr); | |||
3562 | QualOS << "objcproto"; | |||
3563 | for (const auto *I : T->quals()) { | |||
3564 | StringRef name = I->getName(); | |||
3565 | QualOS << name.size() << name; | |||
3566 | } | |||
3567 | Out << 'U' << QualStr.size() << QualStr; | |||
3568 | } | |||
3569 | ||||
3570 | mangleType(T->getBaseType()); | |||
3571 | ||||
3572 | if (T->isSpecialized()) { | |||
3573 | // Mangle type arguments as I <type>+ E | |||
3574 | Out << 'I'; | |||
3575 | for (auto typeArg : T->getTypeArgs()) | |||
3576 | mangleType(typeArg); | |||
3577 | Out << 'E'; | |||
3578 | } | |||
3579 | } | |||
3580 | ||||
3581 | void CXXNameMangler::mangleType(const BlockPointerType *T) { | |||
3582 | Out << "U13block_pointer"; | |||
3583 | mangleType(T->getPointeeType()); | |||
3584 | } | |||
3585 | ||||
3586 | void CXXNameMangler::mangleType(const InjectedClassNameType *T) { | |||
3587 | // Mangle injected class name types as if the user had written the | |||
3588 | // specialization out fully. It may not actually be possible to see | |||
3589 | // this mangling, though. | |||
3590 | mangleType(T->getInjectedSpecializationType()); | |||
3591 | } | |||
3592 | ||||
3593 | void CXXNameMangler::mangleType(const TemplateSpecializationType *T) { | |||
3594 | if (TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl()) { | |||
3595 | mangleTemplateName(TD, T->getArgs(), T->getNumArgs()); | |||
3596 | } else { | |||
3597 | if (mangleSubstitution(QualType(T, 0))) | |||
3598 | return; | |||
3599 | ||||
3600 | mangleTemplatePrefix(T->getTemplateName()); | |||
3601 | ||||
3602 | // FIXME: GCC does not appear to mangle the template arguments when | |||
3603 | // the template in question is a dependent template name. Should we | |||
3604 | // emulate that badness? | |||
3605 | mangleTemplateArgs(T->getTemplateName(), T->getArgs(), T->getNumArgs()); | |||
3606 | addSubstitution(QualType(T, 0)); | |||
3607 | } | |||
3608 | } | |||
3609 | ||||
3610 | void CXXNameMangler::mangleType(const DependentNameType *T) { | |||
3611 | // Proposal by cxx-abi-dev, 2014-03-26 | |||
3612 | // <class-enum-type> ::= <name> # non-dependent or dependent type name or | |||
3613 | // # dependent elaborated type specifier using | |||
3614 | // # 'typename' | |||
3615 | // ::= Ts <name> # dependent elaborated type specifier using | |||
3616 | // # 'struct' or 'class' | |||
3617 | // ::= Tu <name> # dependent elaborated type specifier using | |||
3618 | // # 'union' | |||
3619 | // ::= Te <name> # dependent elaborated type specifier using | |||
3620 | // # 'enum' | |||
3621 | switch (T->getKeyword()) { | |||
3622 | case ETK_None: | |||
3623 | case ETK_Typename: | |||
3624 | break; | |||
3625 | case ETK_Struct: | |||
3626 | case ETK_Class: | |||
3627 | case ETK_Interface: | |||
3628 | Out << "Ts"; | |||
3629 | break; | |||
3630 | case ETK_Union: | |||
3631 | Out << "Tu"; | |||
3632 | break; | |||
3633 | case ETK_Enum: | |||
3634 | Out << "Te"; | |||
3635 | break; | |||
3636 | } | |||
3637 | // Typename types are always nested | |||
3638 | Out << 'N'; | |||
3639 | manglePrefix(T->getQualifier()); | |||
3640 | mangleSourceName(T->getIdentifier()); | |||
3641 | Out << 'E'; | |||
3642 | } | |||
3643 | ||||
3644 | void CXXNameMangler::mangleType(const DependentTemplateSpecializationType *T) { | |||
3645 | // Dependently-scoped template types are nested if they have a prefix. | |||
3646 | Out << 'N'; | |||
3647 | ||||
3648 | // TODO: avoid making this TemplateName. | |||
3649 | TemplateName Prefix = | |||
3650 | getASTContext().getDependentTemplateName(T->getQualifier(), | |||
3651 | T->getIdentifier()); | |||
3652 | mangleTemplatePrefix(Prefix); | |||
3653 | ||||
3654 | // FIXME: GCC does not appear to mangle the template arguments when | |||
3655 | // the template in question is a dependent template name. Should we | |||
3656 | // emulate that badness? | |||
3657 | mangleTemplateArgs(Prefix, T->getArgs(), T->getNumArgs()); | |||
3658 | Out << 'E'; | |||
3659 | } | |||
3660 | ||||
3661 | void CXXNameMangler::mangleType(const TypeOfType *T) { | |||
3662 | // FIXME: this is pretty unsatisfactory, but there isn't an obvious | |||
3663 | // "extension with parameters" mangling. | |||
3664 | Out << "u6typeof"; | |||
3665 | } | |||
3666 | ||||
3667 | void CXXNameMangler::mangleType(const TypeOfExprType *T) { | |||
3668 | // FIXME: this is pretty unsatisfactory, but there isn't an obvious | |||
3669 | // "extension with parameters" mangling. | |||
3670 | Out << "u6typeof"; | |||
3671 | } | |||
3672 | ||||
3673 | void CXXNameMangler::mangleType(const DecltypeType *T) { | |||
3674 | Expr *E = T->getUnderlyingExpr(); | |||
3675 | ||||
3676 | // type ::= Dt <expression> E # decltype of an id-expression | |||
3677 | // # or class member access | |||
3678 | // ::= DT <expression> E # decltype of an expression | |||
3679 | ||||
3680 | // This purports to be an exhaustive list of id-expressions and | |||
3681 | // class member accesses. Note that we do not ignore parentheses; | |||
3682 | // parentheses change the semantics of decltype for these | |||
3683 | // expressions (and cause the mangler to use the other form). | |||
3684 | if (isa<DeclRefExpr>(E) || | |||
3685 | isa<MemberExpr>(E) || | |||
3686 | isa<UnresolvedLookupExpr>(E) || | |||
3687 | isa<DependentScopeDeclRefExpr>(E) || | |||
3688 | isa<CXXDependentScopeMemberExpr>(E) || | |||
3689 | isa<UnresolvedMemberExpr>(E)) | |||
3690 | Out << "Dt"; | |||
3691 | else | |||
3692 | Out << "DT"; | |||
3693 | mangleExpression(E); | |||
3694 | Out << 'E'; | |||
3695 | } | |||
3696 | ||||
3697 | void CXXNameMangler::mangleType(const UnaryTransformType *T) { | |||
3698 | // If this is dependent, we need to record that. If not, we simply | |||
3699 | // mangle it as the underlying type since they are equivalent. | |||
3700 | if (T->isDependentType()) { | |||
3701 | Out << 'U'; | |||
3702 | ||||
3703 | switch (T->getUTTKind()) { | |||
3704 | case UnaryTransformType::EnumUnderlyingType: | |||
3705 | Out << "3eut"; | |||
3706 | break; | |||
3707 | } | |||
3708 | } | |||
3709 | ||||
3710 | mangleType(T->getBaseType()); | |||
3711 | } | |||
3712 | ||||
3713 | void CXXNameMangler::mangleType(const AutoType *T) { | |||
3714 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3715, __PRETTY_FUNCTION__)) | |||
3715 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3715, __PRETTY_FUNCTION__)); | |||
3716 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3717, __PRETTY_FUNCTION__)) | |||
3717 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3717, __PRETTY_FUNCTION__)); | |||
3718 | // <builtin-type> ::= Da # auto | |||
3719 | // ::= Dc # decltype(auto) | |||
3720 | Out << (T->isDecltypeAuto() ? "Dc" : "Da"); | |||
3721 | } | |||
3722 | ||||
3723 | void CXXNameMangler::mangleType(const DeducedTemplateSpecializationType *T) { | |||
3724 | QualType Deduced = T->getDeducedType(); | |||
3725 | if (!Deduced.isNull()) | |||
3726 | return mangleType(Deduced); | |||
3727 | ||||
3728 | TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl(); | |||
3729 | assert(TD && "shouldn't form deduced TST unless we know we have a template")((TD && "shouldn't form deduced TST unless we know we have a template" ) ? static_cast<void> (0) : __assert_fail ("TD && \"shouldn't form deduced TST unless we know we have a template\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3729, __PRETTY_FUNCTION__)); | |||
3730 | ||||
3731 | if (mangleSubstitution(TD)) | |||
3732 | return; | |||
3733 | ||||
3734 | mangleName(GlobalDecl(TD)); | |||
3735 | addSubstitution(TD); | |||
3736 | } | |||
3737 | ||||
3738 | void CXXNameMangler::mangleType(const AtomicType *T) { | |||
3739 | // <type> ::= U <source-name> <type> # vendor extended type qualifier | |||
3740 | // (Until there's a standardized mangling...) | |||
3741 | Out << "U7_Atomic"; | |||
3742 | mangleType(T->getValueType()); | |||
3743 | } | |||
3744 | ||||
3745 | void CXXNameMangler::mangleType(const PipeType *T) { | |||
3746 | // Pipe type mangling rules are described in SPIR 2.0 specification | |||
3747 | // A.1 Data types and A.3 Summary of changes | |||
3748 | // <type> ::= 8ocl_pipe | |||
3749 | Out << "8ocl_pipe"; | |||
3750 | } | |||
3751 | ||||
3752 | void CXXNameMangler::mangleType(const ExtIntType *T) { | |||
3753 | Out << "U7_ExtInt"; | |||
3754 | llvm::APSInt BW(32, true); | |||
3755 | BW = T->getNumBits(); | |||
3756 | TemplateArgument TA(Context.getASTContext(), BW, getASTContext().IntTy); | |||
3757 | mangleTemplateArgs(TemplateName(), &TA, 1); | |||
3758 | if (T->isUnsigned()) | |||
3759 | Out << "j"; | |||
3760 | else | |||
3761 | Out << "i"; | |||
3762 | } | |||
3763 | ||||
3764 | void CXXNameMangler::mangleType(const DependentExtIntType *T) { | |||
3765 | Out << "U7_ExtInt"; | |||
3766 | TemplateArgument TA(T->getNumBitsExpr()); | |||
3767 | mangleTemplateArgs(TemplateName(), &TA, 1); | |||
3768 | if (T->isUnsigned()) | |||
3769 | Out << "j"; | |||
3770 | else | |||
3771 | Out << "i"; | |||
3772 | } | |||
3773 | ||||
3774 | void CXXNameMangler::mangleIntegerLiteral(QualType T, | |||
3775 | const llvm::APSInt &Value) { | |||
3776 | // <expr-primary> ::= L <type> <value number> E # integer literal | |||
3777 | Out << 'L'; | |||
3778 | ||||
3779 | mangleType(T); | |||
3780 | if (T->isBooleanType()) { | |||
3781 | // Boolean values are encoded as 0/1. | |||
3782 | Out << (Value.getBoolValue() ? '1' : '0'); | |||
3783 | } else { | |||
3784 | mangleNumber(Value); | |||
3785 | } | |||
3786 | Out << 'E'; | |||
3787 | ||||
3788 | } | |||
3789 | ||||
3790 | void CXXNameMangler::mangleMemberExprBase(const Expr *Base, bool IsArrow) { | |||
3791 | // Ignore member expressions involving anonymous unions. | |||
3792 | while (const auto *RT = Base->getType()->getAs<RecordType>()) { | |||
3793 | if (!RT->getDecl()->isAnonymousStructOrUnion()) | |||
3794 | break; | |||
3795 | const auto *ME = dyn_cast<MemberExpr>(Base); | |||
3796 | if (!ME) | |||
3797 | break; | |||
3798 | Base = ME->getBase(); | |||
3799 | IsArrow = ME->isArrow(); | |||
3800 | } | |||
3801 | ||||
3802 | if (Base->isImplicitCXXThis()) { | |||
3803 | // Note: GCC mangles member expressions to the implicit 'this' as | |||
3804 | // *this., whereas we represent them as this->. The Itanium C++ ABI | |||
3805 | // does not specify anything here, so we follow GCC. | |||
3806 | Out << "dtdefpT"; | |||
3807 | } else { | |||
3808 | Out << (IsArrow ? "pt" : "dt"); | |||
3809 | mangleExpression(Base); | |||
3810 | } | |||
3811 | } | |||
3812 | ||||
3813 | /// Mangles a member expression. | |||
3814 | void CXXNameMangler::mangleMemberExpr(const Expr *base, | |||
3815 | bool isArrow, | |||
3816 | NestedNameSpecifier *qualifier, | |||
3817 | NamedDecl *firstQualifierLookup, | |||
3818 | DeclarationName member, | |||
3819 | const TemplateArgumentLoc *TemplateArgs, | |||
3820 | unsigned NumTemplateArgs, | |||
3821 | unsigned arity) { | |||
3822 | // <expression> ::= dt <expression> <unresolved-name> | |||
3823 | // ::= pt <expression> <unresolved-name> | |||
3824 | if (base) | |||
3825 | mangleMemberExprBase(base, isArrow); | |||
3826 | mangleUnresolvedName(qualifier, member, TemplateArgs, NumTemplateArgs, arity); | |||
3827 | } | |||
3828 | ||||
3829 | /// Look at the callee of the given call expression and determine if | |||
3830 | /// it's a parenthesized id-expression which would have triggered ADL | |||
3831 | /// otherwise. | |||
3832 | static bool isParenthesizedADLCallee(const CallExpr *call) { | |||
3833 | const Expr *callee = call->getCallee(); | |||
3834 | const Expr *fn = callee->IgnoreParens(); | |||
3835 | ||||
3836 | // Must be parenthesized. IgnoreParens() skips __extension__ nodes, | |||
3837 | // too, but for those to appear in the callee, it would have to be | |||
3838 | // parenthesized. | |||
3839 | if (callee == fn) return false; | |||
3840 | ||||
3841 | // Must be an unresolved lookup. | |||
3842 | const UnresolvedLookupExpr *lookup = dyn_cast<UnresolvedLookupExpr>(fn); | |||
3843 | if (!lookup) return false; | |||
3844 | ||||
3845 | assert(!lookup->requiresADL())((!lookup->requiresADL()) ? static_cast<void> (0) : __assert_fail ("!lookup->requiresADL()", "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3845, __PRETTY_FUNCTION__)); | |||
3846 | ||||
3847 | // Must be an unqualified lookup. | |||
3848 | if (lookup->getQualifier()) return false; | |||
3849 | ||||
3850 | // Must not have found a class member. Note that if one is a class | |||
3851 | // member, they're all class members. | |||
3852 | if (lookup->getNumDecls() > 0 && | |||
3853 | (*lookup->decls_begin())->isCXXClassMember()) | |||
3854 | return false; | |||
3855 | ||||
3856 | // Otherwise, ADL would have been triggered. | |||
3857 | return true; | |||
3858 | } | |||
3859 | ||||
3860 | void CXXNameMangler::mangleCastExpression(const Expr *E, StringRef CastEncoding) { | |||
3861 | const ExplicitCastExpr *ECE = cast<ExplicitCastExpr>(E); | |||
3862 | Out << CastEncoding; | |||
3863 | mangleType(ECE->getType()); | |||
3864 | mangleExpression(ECE->getSubExpr()); | |||
3865 | } | |||
3866 | ||||
3867 | void CXXNameMangler::mangleInitListElements(const InitListExpr *InitList) { | |||
3868 | if (auto *Syntactic = InitList->getSyntacticForm()) | |||
3869 | InitList = Syntactic; | |||
3870 | for (unsigned i = 0, e = InitList->getNumInits(); i != e; ++i) | |||
3871 | mangleExpression(InitList->getInit(i)); | |||
3872 | } | |||
3873 | ||||
3874 | void CXXNameMangler::mangleDeclRefExpr(const NamedDecl *D) { | |||
3875 | switch (D->getKind()) { | |||
3876 | default: | |||
3877 | // <expr-primary> ::= L <mangled-name> E # external name | |||
3878 | Out << 'L'; | |||
3879 | mangle(D); | |||
3880 | Out << 'E'; | |||
3881 | break; | |||
3882 | ||||
3883 | case Decl::ParmVar: | |||
3884 | mangleFunctionParam(cast<ParmVarDecl>(D)); | |||
3885 | break; | |||
3886 | ||||
3887 | case Decl::EnumConstant: { | |||
3888 | const EnumConstantDecl *ED = cast<EnumConstantDecl>(D); | |||
3889 | mangleIntegerLiteral(ED->getType(), ED->getInitVal()); | |||
3890 | break; | |||
3891 | } | |||
3892 | ||||
3893 | case Decl::NonTypeTemplateParm: | |||
3894 | const NonTypeTemplateParmDecl *PD = cast<NonTypeTemplateParmDecl>(D); | |||
3895 | mangleTemplateParameter(PD->getDepth(), PD->getIndex()); | |||
3896 | break; | |||
3897 | } | |||
3898 | } | |||
3899 | ||||
3900 | void CXXNameMangler::mangleExpression(const Expr *E, unsigned Arity) { | |||
3901 | // <expression> ::= <unary operator-name> <expression> | |||
3902 | // ::= <binary operator-name> <expression> <expression> | |||
3903 | // ::= <trinary operator-name> <expression> <expression> <expression> | |||
3904 | // ::= cv <type> expression # conversion with one argument | |||
3905 | // ::= cv <type> _ <expression>* E # conversion with a different number of arguments | |||
3906 | // ::= dc <type> <expression> # dynamic_cast<type> (expression) | |||
3907 | // ::= sc <type> <expression> # static_cast<type> (expression) | |||
3908 | // ::= cc <type> <expression> # const_cast<type> (expression) | |||
3909 | // ::= rc <type> <expression> # reinterpret_cast<type> (expression) | |||
3910 | // ::= st <type> # sizeof (a type) | |||
3911 | // ::= at <type> # alignof (a type) | |||
3912 | // ::= <template-param> | |||
3913 | // ::= <function-param> | |||
3914 | // ::= sr <type> <unqualified-name> # dependent name | |||
3915 | // ::= sr <type> <unqualified-name> <template-args> # dependent template-id | |||
3916 | // ::= ds <expression> <expression> # expr.*expr | |||
3917 | // ::= sZ <template-param> # size of a parameter pack | |||
3918 | // ::= sZ <function-param> # size of a function parameter pack | |||
3919 | // ::= <expr-primary> | |||
3920 | // <expr-primary> ::= L <type> <value number> E # integer literal | |||
3921 | // ::= L <type <value float> E # floating literal | |||
3922 | // ::= L <mangled-name> E # external name | |||
3923 | // ::= fpT # 'this' expression | |||
3924 | QualType ImplicitlyConvertedToType; | |||
3925 | ||||
3926 | recurse: | |||
3927 | switch (E->getStmtClass()) { | |||
3928 | case Expr::NoStmtClass: | |||
3929 | #define ABSTRACT_STMT(Type) | |||
3930 | #define EXPR(Type, Base) | |||
3931 | #define STMT(Type, Base) \ | |||
3932 | case Expr::Type##Class: | |||
3933 | #include "clang/AST/StmtNodes.inc" | |||
3934 | // fallthrough | |||
3935 | ||||
3936 | // These all can only appear in local or variable-initialization | |||
3937 | // contexts and so should never appear in a mangling. | |||
3938 | case Expr::AddrLabelExprClass: | |||
3939 | case Expr::DesignatedInitUpdateExprClass: | |||
3940 | case Expr::ImplicitValueInitExprClass: | |||
3941 | case Expr::ArrayInitLoopExprClass: | |||
3942 | case Expr::ArrayInitIndexExprClass: | |||
3943 | case Expr::NoInitExprClass: | |||
3944 | case Expr::ParenListExprClass: | |||
3945 | case Expr::LambdaExprClass: | |||
3946 | case Expr::MSPropertyRefExprClass: | |||
3947 | case Expr::MSPropertySubscriptExprClass: | |||
3948 | case Expr::TypoExprClass: // This should no longer exist in the AST by now. | |||
3949 | case Expr::RecoveryExprClass: | |||
3950 | case Expr::OMPArraySectionExprClass: | |||
3951 | case Expr::OMPArrayShapingExprClass: | |||
3952 | case Expr::OMPIteratorExprClass: | |||
3953 | case Expr::CXXInheritedCtorInitExprClass: | |||
3954 | llvm_unreachable("unexpected statement kind")::llvm::llvm_unreachable_internal("unexpected statement kind" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 3954); | |||
3955 | ||||
3956 | case Expr::ConstantExprClass: | |||
3957 | E = cast<ConstantExpr>(E)->getSubExpr(); | |||
3958 | goto recurse; | |||
3959 | ||||
3960 | // FIXME: invent manglings for all these. | |||
3961 | case Expr::BlockExprClass: | |||
3962 | case Expr::ChooseExprClass: | |||
3963 | case Expr::CompoundLiteralExprClass: | |||
3964 | case Expr::ExtVectorElementExprClass: | |||
3965 | case Expr::GenericSelectionExprClass: | |||
3966 | case Expr::ObjCEncodeExprClass: | |||
3967 | case Expr::ObjCIsaExprClass: | |||
3968 | case Expr::ObjCIvarRefExprClass: | |||
3969 | case Expr::ObjCMessageExprClass: | |||
3970 | case Expr::ObjCPropertyRefExprClass: | |||
3971 | case Expr::ObjCProtocolExprClass: | |||
3972 | case Expr::ObjCSelectorExprClass: | |||
3973 | case Expr::ObjCStringLiteralClass: | |||
3974 | case Expr::ObjCBoxedExprClass: | |||
3975 | case Expr::ObjCArrayLiteralClass: | |||
3976 | case Expr::ObjCDictionaryLiteralClass: | |||
3977 | case Expr::ObjCSubscriptRefExprClass: | |||
3978 | case Expr::ObjCIndirectCopyRestoreExprClass: | |||
3979 | case Expr::ObjCAvailabilityCheckExprClass: | |||
3980 | case Expr::OffsetOfExprClass: | |||
3981 | case Expr::PredefinedExprClass: | |||
3982 | case Expr::ShuffleVectorExprClass: | |||
3983 | case Expr::ConvertVectorExprClass: | |||
3984 | case Expr::StmtExprClass: | |||
3985 | case Expr::TypeTraitExprClass: | |||
3986 | case Expr::RequiresExprClass: | |||
3987 | case Expr::ArrayTypeTraitExprClass: | |||
3988 | case Expr::ExpressionTraitExprClass: | |||
3989 | case Expr::VAArgExprClass: | |||
3990 | case Expr::CUDAKernelCallExprClass: | |||
3991 | case Expr::AsTypeExprClass: | |||
3992 | case Expr::PseudoObjectExprClass: | |||
3993 | case Expr::AtomicExprClass: | |||
3994 | case Expr::SourceLocExprClass: | |||
3995 | case Expr::BuiltinBitCastExprClass: | |||
3996 | { | |||
3997 | if (!NullOut) { | |||
3998 | // As bad as this diagnostic is, it's better than crashing. | |||
3999 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
4000 | unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, | |||
4001 | "cannot yet mangle expression type %0"); | |||
4002 | Diags.Report(E->getExprLoc(), DiagID) | |||
4003 | << E->getStmtClassName() << E->getSourceRange(); | |||
4004 | } | |||
4005 | break; | |||
4006 | } | |||
4007 | ||||
4008 | case Expr::CXXUuidofExprClass: { | |||
4009 | const CXXUuidofExpr *UE = cast<CXXUuidofExpr>(E); | |||
4010 | if (UE->isTypeOperand()) { | |||
4011 | QualType UuidT = UE->getTypeOperand(Context.getASTContext()); | |||
4012 | Out << "u8__uuidoft"; | |||
4013 | mangleType(UuidT); | |||
4014 | } else { | |||
4015 | Expr *UuidExp = UE->getExprOperand(); | |||
4016 | Out << "u8__uuidofz"; | |||
4017 | mangleExpression(UuidExp, Arity); | |||
4018 | } | |||
4019 | break; | |||
4020 | } | |||
4021 | ||||
4022 | // Even gcc-4.5 doesn't mangle this. | |||
4023 | case Expr::BinaryConditionalOperatorClass: { | |||
4024 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
4025 | unsigned DiagID = | |||
4026 | Diags.getCustomDiagID(DiagnosticsEngine::Error, | |||
4027 | "?: operator with omitted middle operand cannot be mangled"); | |||
4028 | Diags.Report(E->getExprLoc(), DiagID) | |||
4029 | << E->getStmtClassName() << E->getSourceRange(); | |||
4030 | break; | |||
4031 | } | |||
4032 | ||||
4033 | // These are used for internal purposes and cannot be meaningfully mangled. | |||
4034 | case Expr::OpaqueValueExprClass: | |||
4035 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4035); | |||
4036 | ||||
4037 | case Expr::InitListExprClass: { | |||
4038 | Out << "il"; | |||
4039 | mangleInitListElements(cast<InitListExpr>(E)); | |||
4040 | Out << "E"; | |||
4041 | break; | |||
4042 | } | |||
4043 | ||||
4044 | case Expr::DesignatedInitExprClass: { | |||
4045 | auto *DIE = cast<DesignatedInitExpr>(E); | |||
4046 | for (const auto &Designator : DIE->designators()) { | |||
4047 | if (Designator.isFieldDesignator()) { | |||
4048 | Out << "di"; | |||
4049 | mangleSourceName(Designator.getFieldName()); | |||
4050 | } else if (Designator.isArrayDesignator()) { | |||
4051 | Out << "dx"; | |||
4052 | mangleExpression(DIE->getArrayIndex(Designator)); | |||
4053 | } else { | |||
4054 | assert(Designator.isArrayRangeDesignator() &&((Designator.isArrayRangeDesignator() && "unknown designator kind" ) ? static_cast<void> (0) : __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4055, __PRETTY_FUNCTION__)) | |||
4055 | "unknown designator kind")((Designator.isArrayRangeDesignator() && "unknown designator kind" ) ? static_cast<void> (0) : __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4055, __PRETTY_FUNCTION__)); | |||
4056 | Out << "dX"; | |||
4057 | mangleExpression(DIE->getArrayRangeStart(Designator)); | |||
4058 | mangleExpression(DIE->getArrayRangeEnd(Designator)); | |||
4059 | } | |||
4060 | } | |||
4061 | mangleExpression(DIE->getInit()); | |||
4062 | break; | |||
4063 | } | |||
4064 | ||||
4065 | case Expr::CXXDefaultArgExprClass: | |||
4066 | mangleExpression(cast<CXXDefaultArgExpr>(E)->getExpr(), Arity); | |||
4067 | break; | |||
4068 | ||||
4069 | case Expr::CXXDefaultInitExprClass: | |||
4070 | mangleExpression(cast<CXXDefaultInitExpr>(E)->getExpr(), Arity); | |||
4071 | break; | |||
4072 | ||||
4073 | case Expr::CXXStdInitializerListExprClass: | |||
4074 | mangleExpression(cast<CXXStdInitializerListExpr>(E)->getSubExpr(), Arity); | |||
4075 | break; | |||
4076 | ||||
4077 | case Expr::SubstNonTypeTemplateParmExprClass: | |||
4078 | mangleExpression(cast<SubstNonTypeTemplateParmExpr>(E)->getReplacement(), | |||
4079 | Arity); | |||
4080 | break; | |||
4081 | ||||
4082 | case Expr::UserDefinedLiteralClass: | |||
4083 | // We follow g++'s approach of mangling a UDL as a call to the literal | |||
4084 | // operator. | |||
4085 | case Expr::CXXMemberCallExprClass: // fallthrough | |||
4086 | case Expr::CallExprClass: { | |||
4087 | const CallExpr *CE = cast<CallExpr>(E); | |||
4088 | ||||
4089 | // <expression> ::= cp <simple-id> <expression>* E | |||
4090 | // We use this mangling only when the call would use ADL except | |||
4091 | // for being parenthesized. Per discussion with David | |||
4092 | // Vandervoorde, 2011.04.25. | |||
4093 | if (isParenthesizedADLCallee(CE)) { | |||
4094 | Out << "cp"; | |||
4095 | // The callee here is a parenthesized UnresolvedLookupExpr with | |||
4096 | // no qualifier and should always get mangled as a <simple-id> | |||
4097 | // anyway. | |||
4098 | ||||
4099 | // <expression> ::= cl <expression>* E | |||
4100 | } else { | |||
4101 | Out << "cl"; | |||
4102 | } | |||
4103 | ||||
4104 | unsigned CallArity = CE->getNumArgs(); | |||
4105 | for (const Expr *Arg : CE->arguments()) | |||
4106 | if (isa<PackExpansionExpr>(Arg)) | |||
4107 | CallArity = UnknownArity; | |||
4108 | ||||
4109 | mangleExpression(CE->getCallee(), CallArity); | |||
4110 | for (const Expr *Arg : CE->arguments()) | |||
4111 | mangleExpression(Arg); | |||
4112 | Out << 'E'; | |||
4113 | break; | |||
4114 | } | |||
4115 | ||||
4116 | case Expr::CXXNewExprClass: { | |||
4117 | const CXXNewExpr *New = cast<CXXNewExpr>(E); | |||
4118 | if (New->isGlobalNew()) Out << "gs"; | |||
4119 | Out << (New->isArray() ? "na" : "nw"); | |||
4120 | for (CXXNewExpr::const_arg_iterator I = New->placement_arg_begin(), | |||
4121 | E = New->placement_arg_end(); I != E; ++I) | |||
4122 | mangleExpression(*I); | |||
4123 | Out << '_'; | |||
4124 | mangleType(New->getAllocatedType()); | |||
4125 | if (New->hasInitializer()) { | |||
4126 | if (New->getInitializationStyle() == CXXNewExpr::ListInit) | |||
4127 | Out << "il"; | |||
4128 | else | |||
4129 | Out << "pi"; | |||
4130 | const Expr *Init = New->getInitializer(); | |||
4131 | if (const CXXConstructExpr *CCE = dyn_cast<CXXConstructExpr>(Init)) { | |||
4132 | // Directly inline the initializers. | |||
4133 | for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(), | |||
4134 | E = CCE->arg_end(); | |||
4135 | I != E; ++I) | |||
4136 | mangleExpression(*I); | |||
4137 | } else if (const ParenListExpr *PLE = dyn_cast<ParenListExpr>(Init)) { | |||
4138 | for (unsigned i = 0, e = PLE->getNumExprs(); i != e; ++i) | |||
4139 | mangleExpression(PLE->getExpr(i)); | |||
4140 | } else if (New->getInitializationStyle() == CXXNewExpr::ListInit && | |||
4141 | isa<InitListExpr>(Init)) { | |||
4142 | // Only take InitListExprs apart for list-initialization. | |||
4143 | mangleInitListElements(cast<InitListExpr>(Init)); | |||
4144 | } else | |||
4145 | mangleExpression(Init); | |||
4146 | } | |||
4147 | Out << 'E'; | |||
4148 | break; | |||
4149 | } | |||
4150 | ||||
4151 | case Expr::CXXPseudoDestructorExprClass: { | |||
4152 | const auto *PDE = cast<CXXPseudoDestructorExpr>(E); | |||
4153 | if (const Expr *Base = PDE->getBase()) | |||
4154 | mangleMemberExprBase(Base, PDE->isArrow()); | |||
4155 | NestedNameSpecifier *Qualifier = PDE->getQualifier(); | |||
4156 | if (TypeSourceInfo *ScopeInfo = PDE->getScopeTypeInfo()) { | |||
4157 | if (Qualifier) { | |||
4158 | mangleUnresolvedPrefix(Qualifier, | |||
4159 | /*recursive=*/true); | |||
4160 | mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType()); | |||
4161 | Out << 'E'; | |||
4162 | } else { | |||
4163 | Out << "sr"; | |||
4164 | if (!mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType())) | |||
4165 | Out << 'E'; | |||
4166 | } | |||
4167 | } else if (Qualifier) { | |||
4168 | mangleUnresolvedPrefix(Qualifier); | |||
4169 | } | |||
4170 | // <base-unresolved-name> ::= dn <destructor-name> | |||
4171 | Out << "dn"; | |||
4172 | QualType DestroyedType = PDE->getDestroyedType(); | |||
4173 | mangleUnresolvedTypeOrSimpleId(DestroyedType); | |||
4174 | break; | |||
4175 | } | |||
4176 | ||||
4177 | case Expr::MemberExprClass: { | |||
4178 | const MemberExpr *ME = cast<MemberExpr>(E); | |||
4179 | mangleMemberExpr(ME->getBase(), ME->isArrow(), | |||
4180 | ME->getQualifier(), nullptr, | |||
4181 | ME->getMemberDecl()->getDeclName(), | |||
4182 | ME->getTemplateArgs(), ME->getNumTemplateArgs(), | |||
4183 | Arity); | |||
4184 | break; | |||
4185 | } | |||
4186 | ||||
4187 | case Expr::UnresolvedMemberExprClass: { | |||
4188 | const UnresolvedMemberExpr *ME = cast<UnresolvedMemberExpr>(E); | |||
4189 | mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(), | |||
4190 | ME->isArrow(), ME->getQualifier(), nullptr, | |||
4191 | ME->getMemberName(), | |||
4192 | ME->getTemplateArgs(), ME->getNumTemplateArgs(), | |||
4193 | Arity); | |||
4194 | break; | |||
4195 | } | |||
4196 | ||||
4197 | case Expr::CXXDependentScopeMemberExprClass: { | |||
4198 | const CXXDependentScopeMemberExpr *ME | |||
4199 | = cast<CXXDependentScopeMemberExpr>(E); | |||
4200 | mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(), | |||
4201 | ME->isArrow(), ME->getQualifier(), | |||
4202 | ME->getFirstQualifierFoundInScope(), | |||
4203 | ME->getMember(), | |||
4204 | ME->getTemplateArgs(), ME->getNumTemplateArgs(), | |||
4205 | Arity); | |||
4206 | break; | |||
4207 | } | |||
4208 | ||||
4209 | case Expr::UnresolvedLookupExprClass: { | |||
4210 | const UnresolvedLookupExpr *ULE = cast<UnresolvedLookupExpr>(E); | |||
4211 | mangleUnresolvedName(ULE->getQualifier(), ULE->getName(), | |||
4212 | ULE->getTemplateArgs(), ULE->getNumTemplateArgs(), | |||
4213 | Arity); | |||
4214 | break; | |||
4215 | } | |||
4216 | ||||
4217 | case Expr::CXXUnresolvedConstructExprClass: { | |||
4218 | const CXXUnresolvedConstructExpr *CE = cast<CXXUnresolvedConstructExpr>(E); | |||
4219 | unsigned N = CE->getNumArgs(); | |||
4220 | ||||
4221 | if (CE->isListInitialization()) { | |||
4222 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4222, __PRETTY_FUNCTION__)); | |||
4223 | auto *IL = cast<InitListExpr>(CE->getArg(0)); | |||
4224 | Out << "tl"; | |||
4225 | mangleType(CE->getType()); | |||
4226 | mangleInitListElements(IL); | |||
4227 | Out << "E"; | |||
4228 | return; | |||
4229 | } | |||
4230 | ||||
4231 | Out << "cv"; | |||
4232 | mangleType(CE->getType()); | |||
4233 | if (N != 1) Out << '_'; | |||
4234 | for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I)); | |||
4235 | if (N != 1) Out << 'E'; | |||
4236 | break; | |||
4237 | } | |||
4238 | ||||
4239 | case Expr::CXXConstructExprClass: { | |||
4240 | const auto *CE = cast<CXXConstructExpr>(E); | |||
4241 | if (!CE->isListInitialization() || CE->isStdInitListInitialization()) { | |||
4242 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4245, __PRETTY_FUNCTION__)) | |||
4243 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4245, __PRETTY_FUNCTION__)) | |||
4244 | (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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4245, __PRETTY_FUNCTION__)) | |||
4245 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4245, __PRETTY_FUNCTION__)); | |||
4246 | return mangleExpression(cast<CXXConstructExpr>(E)->getArg(0)); | |||
4247 | } | |||
4248 | Out << "il"; | |||
4249 | for (auto *E : CE->arguments()) | |||
4250 | mangleExpression(E); | |||
4251 | Out << "E"; | |||
4252 | break; | |||
4253 | } | |||
4254 | ||||
4255 | case Expr::CXXTemporaryObjectExprClass: { | |||
4256 | const auto *CE = cast<CXXTemporaryObjectExpr>(E); | |||
4257 | unsigned N = CE->getNumArgs(); | |||
4258 | bool List = CE->isListInitialization(); | |||
4259 | ||||
4260 | if (List) | |||
4261 | Out << "tl"; | |||
4262 | else | |||
4263 | Out << "cv"; | |||
4264 | mangleType(CE->getType()); | |||
4265 | if (!List && N != 1) | |||
4266 | Out << '_'; | |||
4267 | if (CE->isStdInitListInitialization()) { | |||
4268 | // We implicitly created a std::initializer_list<T> for the first argument | |||
4269 | // of a constructor of type U in an expression of the form U{a, b, c}. | |||
4270 | // Strip all the semantic gunk off the initializer list. | |||
4271 | auto *SILE = | |||
4272 | cast<CXXStdInitializerListExpr>(CE->getArg(0)->IgnoreImplicit()); | |||
4273 | auto *ILE = cast<InitListExpr>(SILE->getSubExpr()->IgnoreImplicit()); | |||
4274 | mangleInitListElements(ILE); | |||
4275 | } else { | |||
4276 | for (auto *E : CE->arguments()) | |||
4277 | mangleExpression(E); | |||
4278 | } | |||
4279 | if (List || N != 1) | |||
4280 | Out << 'E'; | |||
4281 | break; | |||
4282 | } | |||
4283 | ||||
4284 | case Expr::CXXScalarValueInitExprClass: | |||
4285 | Out << "cv"; | |||
4286 | mangleType(E->getType()); | |||
4287 | Out << "_E"; | |||
4288 | break; | |||
4289 | ||||
4290 | case Expr::CXXNoexceptExprClass: | |||
4291 | Out << "nx"; | |||
4292 | mangleExpression(cast<CXXNoexceptExpr>(E)->getOperand()); | |||
4293 | break; | |||
4294 | ||||
4295 | case Expr::UnaryExprOrTypeTraitExprClass: { | |||
4296 | const UnaryExprOrTypeTraitExpr *SAE = cast<UnaryExprOrTypeTraitExpr>(E); | |||
4297 | ||||
4298 | if (!SAE->isInstantiationDependent()) { | |||
4299 | // Itanium C++ ABI: | |||
4300 | // If the operand of a sizeof or alignof operator is not | |||
4301 | // instantiation-dependent it is encoded as an integer literal | |||
4302 | // reflecting the result of the operator. | |||
4303 | // | |||
4304 | // If the result of the operator is implicitly converted to a known | |||
4305 | // integer type, that type is used for the literal; otherwise, the type | |||
4306 | // of std::size_t or std::ptrdiff_t is used. | |||
4307 | QualType T = (ImplicitlyConvertedToType.isNull() || | |||
4308 | !ImplicitlyConvertedToType->isIntegerType())? SAE->getType() | |||
4309 | : ImplicitlyConvertedToType; | |||
4310 | llvm::APSInt V = SAE->EvaluateKnownConstInt(Context.getASTContext()); | |||
4311 | mangleIntegerLiteral(T, V); | |||
4312 | break; | |||
4313 | } | |||
4314 | ||||
4315 | switch(SAE->getKind()) { | |||
4316 | case UETT_SizeOf: | |||
4317 | Out << 's'; | |||
4318 | break; | |||
4319 | case UETT_PreferredAlignOf: | |||
4320 | case UETT_AlignOf: | |||
4321 | Out << 'a'; | |||
4322 | break; | |||
4323 | case UETT_VecStep: { | |||
4324 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
4325 | unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, | |||
4326 | "cannot yet mangle vec_step expression"); | |||
4327 | Diags.Report(DiagID); | |||
4328 | return; | |||
4329 | } | |||
4330 | case UETT_OpenMPRequiredSimdAlign: { | |||
4331 | DiagnosticsEngine &Diags = Context.getDiags(); | |||
4332 | unsigned DiagID = Diags.getCustomDiagID( | |||
4333 | DiagnosticsEngine::Error, | |||
4334 | "cannot yet mangle __builtin_omp_required_simd_align expression"); | |||
4335 | Diags.Report(DiagID); | |||
4336 | return; | |||
4337 | } | |||
4338 | } | |||
4339 | if (SAE->isArgumentType()) { | |||
4340 | Out << 't'; | |||
4341 | mangleType(SAE->getArgumentType()); | |||
4342 | } else { | |||
4343 | Out << 'z'; | |||
4344 | mangleExpression(SAE->getArgumentExpr()); | |||
4345 | } | |||
4346 | break; | |||
4347 | } | |||
4348 | ||||
4349 | case Expr::CXXThrowExprClass: { | |||
4350 | const CXXThrowExpr *TE = cast<CXXThrowExpr>(E); | |||
4351 | // <expression> ::= tw <expression> # throw expression | |||
4352 | // ::= tr # rethrow | |||
4353 | if (TE->getSubExpr()) { | |||
4354 | Out << "tw"; | |||
4355 | mangleExpression(TE->getSubExpr()); | |||
4356 | } else { | |||
4357 | Out << "tr"; | |||
4358 | } | |||
4359 | break; | |||
4360 | } | |||
4361 | ||||
4362 | case Expr::CXXTypeidExprClass: { | |||
4363 | const CXXTypeidExpr *TIE = cast<CXXTypeidExpr>(E); | |||
4364 | // <expression> ::= ti <type> # typeid (type) | |||
4365 | // ::= te <expression> # typeid (expression) | |||
4366 | if (TIE->isTypeOperand()) { | |||
4367 | Out << "ti"; | |||
4368 | mangleType(TIE->getTypeOperand(Context.getASTContext())); | |||
4369 | } else { | |||
4370 | Out << "te"; | |||
4371 | mangleExpression(TIE->getExprOperand()); | |||
4372 | } | |||
4373 | break; | |||
4374 | } | |||
4375 | ||||
4376 | case Expr::CXXDeleteExprClass: { | |||
4377 | const CXXDeleteExpr *DE = cast<CXXDeleteExpr>(E); | |||
4378 | // <expression> ::= [gs] dl <expression> # [::] delete expr | |||
4379 | // ::= [gs] da <expression> # [::] delete [] expr | |||
4380 | if (DE->isGlobalDelete()) Out << "gs"; | |||
4381 | Out << (DE->isArrayForm() ? "da" : "dl"); | |||
4382 | mangleExpression(DE->getArgument()); | |||
4383 | break; | |||
4384 | } | |||
4385 | ||||
4386 | case Expr::UnaryOperatorClass: { | |||
4387 | const UnaryOperator *UO = cast<UnaryOperator>(E); | |||
4388 | mangleOperatorName(UnaryOperator::getOverloadedOperator(UO->getOpcode()), | |||
4389 | /*Arity=*/1); | |||
4390 | mangleExpression(UO->getSubExpr()); | |||
4391 | break; | |||
4392 | } | |||
4393 | ||||
4394 | case Expr::ArraySubscriptExprClass: { | |||
4395 | const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(E); | |||
4396 | ||||
4397 | // Array subscript is treated as a syntactically weird form of | |||
4398 | // binary operator. | |||
4399 | Out << "ix"; | |||
4400 | mangleExpression(AE->getLHS()); | |||
4401 | mangleExpression(AE->getRHS()); | |||
4402 | break; | |||
4403 | } | |||
4404 | ||||
4405 | case Expr::MatrixSubscriptExprClass: { | |||
4406 | const MatrixSubscriptExpr *ME = cast<MatrixSubscriptExpr>(E); | |||
4407 | Out << "ixix"; | |||
4408 | mangleExpression(ME->getBase()); | |||
4409 | mangleExpression(ME->getRowIdx()); | |||
4410 | mangleExpression(ME->getColumnIdx()); | |||
4411 | break; | |||
4412 | } | |||
4413 | ||||
4414 | case Expr::CompoundAssignOperatorClass: // fallthrough | |||
4415 | case Expr::BinaryOperatorClass: { | |||
4416 | const BinaryOperator *BO = cast<BinaryOperator>(E); | |||
4417 | if (BO->getOpcode() == BO_PtrMemD) | |||
4418 | Out << "ds"; | |||
4419 | else | |||
4420 | mangleOperatorName(BinaryOperator::getOverloadedOperator(BO->getOpcode()), | |||
4421 | /*Arity=*/2); | |||
4422 | mangleExpression(BO->getLHS()); | |||
4423 | mangleExpression(BO->getRHS()); | |||
4424 | break; | |||
4425 | } | |||
4426 | ||||
4427 | case Expr::CXXRewrittenBinaryOperatorClass: { | |||
4428 | // The mangled form represents the original syntax. | |||
4429 | CXXRewrittenBinaryOperator::DecomposedForm Decomposed = | |||
4430 | cast<CXXRewrittenBinaryOperator>(E)->getDecomposedForm(); | |||
4431 | mangleOperatorName(BinaryOperator::getOverloadedOperator(Decomposed.Opcode), | |||
4432 | /*Arity=*/2); | |||
4433 | mangleExpression(Decomposed.LHS); | |||
4434 | mangleExpression(Decomposed.RHS); | |||
4435 | break; | |||
4436 | } | |||
4437 | ||||
4438 | case Expr::ConditionalOperatorClass: { | |||
4439 | const ConditionalOperator *CO = cast<ConditionalOperator>(E); | |||
4440 | mangleOperatorName(OO_Conditional, /*Arity=*/3); | |||
4441 | mangleExpression(CO->getCond()); | |||
4442 | mangleExpression(CO->getLHS(), Arity); | |||
4443 | mangleExpression(CO->getRHS(), Arity); | |||
4444 | break; | |||
4445 | } | |||
4446 | ||||
4447 | case Expr::ImplicitCastExprClass: { | |||
4448 | ImplicitlyConvertedToType = E->getType(); | |||
4449 | E = cast<ImplicitCastExpr>(E)->getSubExpr(); | |||
4450 | goto recurse; | |||
4451 | } | |||
4452 | ||||
4453 | case Expr::ObjCBridgedCastExprClass: { | |||
4454 | // Mangle ownership casts as a vendor extended operator __bridge, | |||
4455 | // __bridge_transfer, or __bridge_retain. | |||
4456 | StringRef Kind = cast<ObjCBridgedCastExpr>(E)->getBridgeKindName(); | |||
4457 | Out << "v1U" << Kind.size() << Kind; | |||
4458 | } | |||
4459 | // Fall through to mangle the cast itself. | |||
4460 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | |||
4461 | ||||
4462 | case Expr::CStyleCastExprClass: | |||
4463 | mangleCastExpression(E, "cv"); | |||
4464 | break; | |||
4465 | ||||
4466 | case Expr::CXXFunctionalCastExprClass: { | |||
4467 | auto *Sub = cast<ExplicitCastExpr>(E)->getSubExpr()->IgnoreImplicit(); | |||
4468 | // FIXME: Add isImplicit to CXXConstructExpr. | |||
4469 | if (auto *CCE = dyn_cast<CXXConstructExpr>(Sub)) | |||
4470 | if (CCE->getParenOrBraceRange().isInvalid()) | |||
4471 | Sub = CCE->getArg(0)->IgnoreImplicit(); | |||
4472 | if (auto *StdInitList = dyn_cast<CXXStdInitializerListExpr>(Sub)) | |||
4473 | Sub = StdInitList->getSubExpr()->IgnoreImplicit(); | |||
4474 | if (auto *IL = dyn_cast<InitListExpr>(Sub)) { | |||
4475 | Out << "tl"; | |||
4476 | mangleType(E->getType()); | |||
4477 | mangleInitListElements(IL); | |||
4478 | Out << "E"; | |||
4479 | } else { | |||
4480 | mangleCastExpression(E, "cv"); | |||
4481 | } | |||
4482 | break; | |||
4483 | } | |||
4484 | ||||
4485 | case Expr::CXXStaticCastExprClass: | |||
4486 | mangleCastExpression(E, "sc"); | |||
4487 | break; | |||
4488 | case Expr::CXXDynamicCastExprClass: | |||
4489 | mangleCastExpression(E, "dc"); | |||
4490 | break; | |||
4491 | case Expr::CXXReinterpretCastExprClass: | |||
4492 | mangleCastExpression(E, "rc"); | |||
4493 | break; | |||
4494 | case Expr::CXXConstCastExprClass: | |||
4495 | mangleCastExpression(E, "cc"); | |||
4496 | break; | |||
4497 | case Expr::CXXAddrspaceCastExprClass: | |||
4498 | mangleCastExpression(E, "ac"); | |||
4499 | break; | |||
4500 | ||||
4501 | case Expr::CXXOperatorCallExprClass: { | |||
4502 | const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E); | |||
4503 | unsigned NumArgs = CE->getNumArgs(); | |||
4504 | // A CXXOperatorCallExpr for OO_Arrow models only semantics, not syntax | |||
4505 | // (the enclosing MemberExpr covers the syntactic portion). | |||
4506 | if (CE->getOperator() != OO_Arrow) | |||
4507 | mangleOperatorName(CE->getOperator(), /*Arity=*/NumArgs); | |||
4508 | // Mangle the arguments. | |||
4509 | for (unsigned i = 0; i != NumArgs; ++i) | |||
4510 | mangleExpression(CE->getArg(i)); | |||
4511 | break; | |||
4512 | } | |||
4513 | ||||
4514 | case Expr::ParenExprClass: | |||
4515 | mangleExpression(cast<ParenExpr>(E)->getSubExpr(), Arity); | |||
4516 | break; | |||
4517 | ||||
4518 | ||||
4519 | case Expr::ConceptSpecializationExprClass: { | |||
4520 | // <expr-primary> ::= L <mangled-name> E # external name | |||
4521 | Out << "L_Z"; | |||
4522 | auto *CSE = cast<ConceptSpecializationExpr>(E); | |||
4523 | mangleTemplateName(CSE->getNamedConcept(), | |||
4524 | CSE->getTemplateArguments().data(), | |||
4525 | CSE->getTemplateArguments().size()); | |||
4526 | Out << 'E'; | |||
4527 | break; | |||
4528 | } | |||
4529 | ||||
4530 | case Expr::DeclRefExprClass: | |||
4531 | mangleDeclRefExpr(cast<DeclRefExpr>(E)->getDecl()); | |||
4532 | break; | |||
4533 | ||||
4534 | case Expr::SubstNonTypeTemplateParmPackExprClass: | |||
4535 | // FIXME: not clear how to mangle this! | |||
4536 | // template <unsigned N...> class A { | |||
4537 | // template <class U...> void foo(U (&x)[N]...); | |||
4538 | // }; | |||
4539 | Out << "_SUBSTPACK_"; | |||
4540 | break; | |||
4541 | ||||
4542 | case Expr::FunctionParmPackExprClass: { | |||
4543 | // FIXME: not clear how to mangle this! | |||
4544 | const FunctionParmPackExpr *FPPE = cast<FunctionParmPackExpr>(E); | |||
4545 | Out << "v110_SUBSTPACK"; | |||
4546 | mangleDeclRefExpr(FPPE->getParameterPack()); | |||
4547 | break; | |||
4548 | } | |||
4549 | ||||
4550 | case Expr::DependentScopeDeclRefExprClass: { | |||
4551 | const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E); | |||
4552 | mangleUnresolvedName(DRE->getQualifier(), DRE->getDeclName(), | |||
4553 | DRE->getTemplateArgs(), DRE->getNumTemplateArgs(), | |||
4554 | Arity); | |||
4555 | break; | |||
4556 | } | |||
4557 | ||||
4558 | case Expr::CXXBindTemporaryExprClass: | |||
4559 | mangleExpression(cast<CXXBindTemporaryExpr>(E)->getSubExpr()); | |||
4560 | break; | |||
4561 | ||||
4562 | case Expr::ExprWithCleanupsClass: | |||
4563 | mangleExpression(cast<ExprWithCleanups>(E)->getSubExpr(), Arity); | |||
4564 | break; | |||
4565 | ||||
4566 | case Expr::FloatingLiteralClass: { | |||
4567 | const FloatingLiteral *FL = cast<FloatingLiteral>(E); | |||
4568 | mangleFloatLiteral(FL->getType(), FL->getValue()); | |||
4569 | break; | |||
4570 | } | |||
4571 | ||||
4572 | case Expr::FixedPointLiteralClass: | |||
4573 | mangleFixedPointLiteral(); | |||
4574 | break; | |||
4575 | ||||
4576 | case Expr::CharacterLiteralClass: | |||
4577 | Out << 'L'; | |||
4578 | mangleType(E->getType()); | |||
4579 | Out << cast<CharacterLiteral>(E)->getValue(); | |||
4580 | Out << 'E'; | |||
4581 | break; | |||
4582 | ||||
4583 | // FIXME. __objc_yes/__objc_no are mangled same as true/false | |||
4584 | case Expr::ObjCBoolLiteralExprClass: | |||
4585 | Out << "Lb"; | |||
4586 | Out << (cast<ObjCBoolLiteralExpr>(E)->getValue() ? '1' : '0'); | |||
4587 | Out << 'E'; | |||
4588 | break; | |||
4589 | ||||
4590 | case Expr::CXXBoolLiteralExprClass: | |||
4591 | Out << "Lb"; | |||
4592 | Out << (cast<CXXBoolLiteralExpr>(E)->getValue() ? '1' : '0'); | |||
4593 | Out << 'E'; | |||
4594 | break; | |||
4595 | ||||
4596 | case Expr::IntegerLiteralClass: { | |||
4597 | llvm::APSInt Value(cast<IntegerLiteral>(E)->getValue()); | |||
4598 | if (E->getType()->isSignedIntegerType()) | |||
4599 | Value.setIsSigned(true); | |||
4600 | mangleIntegerLiteral(E->getType(), Value); | |||
4601 | break; | |||
4602 | } | |||
4603 | ||||
4604 | case Expr::ImaginaryLiteralClass: { | |||
4605 | const ImaginaryLiteral *IE = cast<ImaginaryLiteral>(E); | |||
4606 | // Mangle as if a complex literal. | |||
4607 | // Proposal from David Vandevoorde, 2010.06.30. | |||
4608 | Out << 'L'; | |||
4609 | mangleType(E->getType()); | |||
4610 | if (const FloatingLiteral *Imag = | |||
4611 | dyn_cast<FloatingLiteral>(IE->getSubExpr())) { | |||
4612 | // Mangle a floating-point zero of the appropriate type. | |||
4613 | mangleFloat(llvm::APFloat(Imag->getValue().getSemantics())); | |||
4614 | Out << '_'; | |||
4615 | mangleFloat(Imag->getValue()); | |||
4616 | } else { | |||
4617 | Out << "0_"; | |||
4618 | llvm::APSInt Value(cast<IntegerLiteral>(IE->getSubExpr())->getValue()); | |||
4619 | if (IE->getSubExpr()->getType()->isSignedIntegerType()) | |||
4620 | Value.setIsSigned(true); | |||
4621 | mangleNumber(Value); | |||
4622 | } | |||
4623 | Out << 'E'; | |||
4624 | break; | |||
4625 | } | |||
4626 | ||||
4627 | case Expr::StringLiteralClass: { | |||
4628 | // Revised proposal from David Vandervoorde, 2010.07.15. | |||
4629 | Out << 'L'; | |||
4630 | assert(isa<ConstantArrayType>(E->getType()))((isa<ConstantArrayType>(E->getType())) ? static_cast <void> (0) : __assert_fail ("isa<ConstantArrayType>(E->getType())" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4630, __PRETTY_FUNCTION__)); | |||
4631 | mangleType(E->getType()); | |||
4632 | Out << 'E'; | |||
4633 | break; | |||
4634 | } | |||
4635 | ||||
4636 | case Expr::GNUNullExprClass: | |||
4637 | // Mangle as if an integer literal 0. | |||
4638 | mangleIntegerLiteral(E->getType(), llvm::APSInt(32)); | |||
4639 | break; | |||
4640 | ||||
4641 | case Expr::CXXNullPtrLiteralExprClass: { | |||
4642 | Out << "LDnE"; | |||
4643 | break; | |||
4644 | } | |||
4645 | ||||
4646 | case Expr::PackExpansionExprClass: | |||
4647 | Out << "sp"; | |||
4648 | mangleExpression(cast<PackExpansionExpr>(E)->getPattern()); | |||
4649 | break; | |||
4650 | ||||
4651 | case Expr::SizeOfPackExprClass: { | |||
4652 | auto *SPE = cast<SizeOfPackExpr>(E); | |||
4653 | if (SPE->isPartiallySubstituted()) { | |||
4654 | Out << "sP"; | |||
4655 | for (const auto &A : SPE->getPartialArguments()) | |||
4656 | mangleTemplateArg(A, false); | |||
4657 | Out << "E"; | |||
4658 | break; | |||
4659 | } | |||
4660 | ||||
4661 | Out << "sZ"; | |||
4662 | const NamedDecl *Pack = SPE->getPack(); | |||
4663 | if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Pack)) | |||
4664 | mangleTemplateParameter(TTP->getDepth(), TTP->getIndex()); | |||
4665 | else if (const NonTypeTemplateParmDecl *NTTP | |||
4666 | = dyn_cast<NonTypeTemplateParmDecl>(Pack)) | |||
4667 | mangleTemplateParameter(NTTP->getDepth(), NTTP->getIndex()); | |||
4668 | else if (const TemplateTemplateParmDecl *TempTP | |||
4669 | = dyn_cast<TemplateTemplateParmDecl>(Pack)) | |||
4670 | mangleTemplateParameter(TempTP->getDepth(), TempTP->getIndex()); | |||
4671 | else | |||
4672 | mangleFunctionParam(cast<ParmVarDecl>(Pack)); | |||
4673 | break; | |||
4674 | } | |||
4675 | ||||
4676 | case Expr::MaterializeTemporaryExprClass: { | |||
4677 | mangleExpression(cast<MaterializeTemporaryExpr>(E)->getSubExpr()); | |||
4678 | break; | |||
4679 | } | |||
4680 | ||||
4681 | case Expr::CXXFoldExprClass: { | |||
4682 | auto *FE = cast<CXXFoldExpr>(E); | |||
4683 | if (FE->isLeftFold()) | |||
4684 | Out << (FE->getInit() ? "fL" : "fl"); | |||
4685 | else | |||
4686 | Out << (FE->getInit() ? "fR" : "fr"); | |||
4687 | ||||
4688 | if (FE->getOperator() == BO_PtrMemD) | |||
4689 | Out << "ds"; | |||
4690 | else | |||
4691 | mangleOperatorName( | |||
4692 | BinaryOperator::getOverloadedOperator(FE->getOperator()), | |||
4693 | /*Arity=*/2); | |||
4694 | ||||
4695 | if (FE->getLHS()) | |||
4696 | mangleExpression(FE->getLHS()); | |||
4697 | if (FE->getRHS()) | |||
4698 | mangleExpression(FE->getRHS()); | |||
4699 | break; | |||
4700 | } | |||
4701 | ||||
4702 | case Expr::CXXThisExprClass: | |||
4703 | Out << "fpT"; | |||
4704 | break; | |||
4705 | ||||
4706 | case Expr::CoawaitExprClass: | |||
4707 | // FIXME: Propose a non-vendor mangling. | |||
4708 | Out << "v18co_await"; | |||
4709 | mangleExpression(cast<CoawaitExpr>(E)->getOperand()); | |||
4710 | break; | |||
4711 | ||||
4712 | case Expr::DependentCoawaitExprClass: | |||
4713 | // FIXME: Propose a non-vendor mangling. | |||
4714 | Out << "v18co_await"; | |||
4715 | mangleExpression(cast<DependentCoawaitExpr>(E)->getOperand()); | |||
4716 | break; | |||
4717 | ||||
4718 | case Expr::CoyieldExprClass: | |||
4719 | // FIXME: Propose a non-vendor mangling. | |||
4720 | Out << "v18co_yield"; | |||
4721 | mangleExpression(cast<CoawaitExpr>(E)->getOperand()); | |||
4722 | break; | |||
4723 | } | |||
4724 | } | |||
4725 | ||||
4726 | /// Mangle an expression which refers to a parameter variable. | |||
4727 | /// | |||
4728 | /// <expression> ::= <function-param> | |||
4729 | /// <function-param> ::= fp <top-level CV-qualifiers> _ # L == 0, I == 0 | |||
4730 | /// <function-param> ::= fp <top-level CV-qualifiers> | |||
4731 | /// <parameter-2 non-negative number> _ # L == 0, I > 0 | |||
4732 | /// <function-param> ::= fL <L-1 non-negative number> | |||
4733 | /// p <top-level CV-qualifiers> _ # L > 0, I == 0 | |||
4734 | /// <function-param> ::= fL <L-1 non-negative number> | |||
4735 | /// p <top-level CV-qualifiers> | |||
4736 | /// <I-1 non-negative number> _ # L > 0, I > 0 | |||
4737 | /// | |||
4738 | /// L is the nesting depth of the parameter, defined as 1 if the | |||
4739 | /// parameter comes from the innermost function prototype scope | |||
4740 | /// enclosing the current context, 2 if from the next enclosing | |||
4741 | /// function prototype scope, and so on, with one special case: if | |||
4742 | /// we've processed the full parameter clause for the innermost | |||
4743 | /// function type, then L is one less. This definition conveniently | |||
4744 | /// makes it irrelevant whether a function's result type was written | |||
4745 | /// trailing or leading, but is otherwise overly complicated; the | |||
4746 | /// numbering was first designed without considering references to | |||
4747 | /// parameter in locations other than return types, and then the | |||
4748 | /// mangling had to be generalized without changing the existing | |||
4749 | /// manglings. | |||
4750 | /// | |||
4751 | /// I is the zero-based index of the parameter within its parameter | |||
4752 | /// declaration clause. Note that the original ABI document describes | |||
4753 | /// this using 1-based ordinals. | |||
4754 | void CXXNameMangler::mangleFunctionParam(const ParmVarDecl *parm) { | |||
4755 | unsigned parmDepth = parm->getFunctionScopeDepth(); | |||
4756 | unsigned parmIndex = parm->getFunctionScopeIndex(); | |||
4757 | ||||
4758 | // Compute 'L'. | |||
4759 | // parmDepth does not include the declaring function prototype. | |||
4760 | // FunctionTypeDepth does account for that. | |||
4761 | assert(parmDepth < FunctionTypeDepth.getDepth())((parmDepth < FunctionTypeDepth.getDepth()) ? static_cast< void> (0) : __assert_fail ("parmDepth < FunctionTypeDepth.getDepth()" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4761, __PRETTY_FUNCTION__)); | |||
4762 | unsigned nestingDepth = FunctionTypeDepth.getDepth() - parmDepth; | |||
4763 | if (FunctionTypeDepth.isInResultType()) | |||
4764 | nestingDepth--; | |||
4765 | ||||
4766 | if (nestingDepth == 0) { | |||
4767 | Out << "fp"; | |||
4768 | } else { | |||
4769 | Out << "fL" << (nestingDepth - 1) << 'p'; | |||
4770 | } | |||
4771 | ||||
4772 | // Top-level qualifiers. We don't have to worry about arrays here, | |||
4773 | // because parameters declared as arrays should already have been | |||
4774 | // transformed to have pointer type. FIXME: apparently these don't | |||
4775 | // get mangled if used as an rvalue of a known non-class type? | |||
4776 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4777, __PRETTY_FUNCTION__)) | |||
4777 | && "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4777, __PRETTY_FUNCTION__)); | |||
4778 | ||||
4779 | if (const DependentAddressSpaceType *DAST = | |||
4780 | dyn_cast<DependentAddressSpaceType>(parm->getType())) { | |||
4781 | mangleQualifiers(DAST->getPointeeType().getQualifiers(), DAST); | |||
4782 | } else { | |||
4783 | mangleQualifiers(parm->getType().getQualifiers()); | |||
4784 | } | |||
4785 | ||||
4786 | // Parameter index. | |||
4787 | if (parmIndex != 0) { | |||
4788 | Out << (parmIndex - 1); | |||
4789 | } | |||
4790 | Out << '_'; | |||
4791 | } | |||
4792 | ||||
4793 | void CXXNameMangler::mangleCXXCtorType(CXXCtorType T, | |||
4794 | const CXXRecordDecl *InheritedFrom) { | |||
4795 | // <ctor-dtor-name> ::= C1 # complete object constructor | |||
4796 | // ::= C2 # base object constructor | |||
4797 | // ::= CI1 <type> # complete inheriting constructor | |||
4798 | // ::= CI2 <type> # base inheriting constructor | |||
4799 | // | |||
4800 | // In addition, C5 is a comdat name with C1 and C2 in it. | |||
4801 | Out << 'C'; | |||
4802 | if (InheritedFrom) | |||
4803 | Out << 'I'; | |||
4804 | switch (T) { | |||
4805 | case Ctor_Complete: | |||
4806 | Out << '1'; | |||
4807 | break; | |||
4808 | case Ctor_Base: | |||
4809 | Out << '2'; | |||
4810 | break; | |||
4811 | case Ctor_Comdat: | |||
4812 | Out << '5'; | |||
4813 | break; | |||
4814 | case Ctor_DefaultClosure: | |||
4815 | case Ctor_CopyingClosure: | |||
4816 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4816); | |||
4817 | } | |||
4818 | if (InheritedFrom) | |||
4819 | mangleName(InheritedFrom); | |||
4820 | } | |||
4821 | ||||
4822 | void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) { | |||
4823 | // <ctor-dtor-name> ::= D0 # deleting destructor | |||
4824 | // ::= D1 # complete object destructor | |||
4825 | // ::= D2 # base object destructor | |||
4826 | // | |||
4827 | // In addition, D5 is a comdat name with D1, D2 and, if virtual, D0 in it. | |||
4828 | switch (T) { | |||
4829 | case Dtor_Deleting: | |||
4830 | Out << "D0"; | |||
4831 | break; | |||
4832 | case Dtor_Complete: | |||
4833 | Out << "D1"; | |||
4834 | break; | |||
4835 | case Dtor_Base: | |||
4836 | Out << "D2"; | |||
4837 | break; | |||
4838 | case Dtor_Comdat: | |||
4839 | Out << "D5"; | |||
4840 | break; | |||
4841 | } | |||
4842 | } | |||
4843 | ||||
4844 | namespace { | |||
4845 | // Helper to provide ancillary information on a template used to mangle its | |||
4846 | // arguments. | |||
4847 | struct TemplateArgManglingInfo { | |||
4848 | TemplateDecl *ResolvedTemplate = nullptr; | |||
4849 | bool SeenPackExpansionIntoNonPack = false; | |||
4850 | const NamedDecl *UnresolvedExpandedPack = nullptr; | |||
4851 | ||||
4852 | TemplateArgManglingInfo(TemplateName TN) { | |||
4853 | if (TemplateDecl *TD = TN.getAsTemplateDecl()) | |||
4854 | ResolvedTemplate = TD; | |||
4855 | } | |||
4856 | ||||
4857 | /// Do we need to mangle template arguments with exactly correct types? | |||
4858 | /// | |||
4859 | /// This should be called exactly once for each parameter / argument pair, in | |||
4860 | /// order. | |||
4861 | bool needExactType(unsigned ParamIdx, const TemplateArgument &Arg) { | |||
4862 | // We need correct types when the template-name is unresolved or when it | |||
4863 | // names a template that is able to be overloaded. | |||
4864 | if (!ResolvedTemplate || SeenPackExpansionIntoNonPack) | |||
4865 | return true; | |||
4866 | ||||
4867 | // Move to the next parameter. | |||
4868 | const NamedDecl *Param = UnresolvedExpandedPack; | |||
4869 | if (!Param) { | |||
4870 | assert(ParamIdx < ResolvedTemplate->getTemplateParameters()->size() &&((ParamIdx < ResolvedTemplate->getTemplateParameters()-> size() && "no parameter for argument") ? static_cast< void> (0) : __assert_fail ("ParamIdx < ResolvedTemplate->getTemplateParameters()->size() && \"no parameter for argument\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4871, __PRETTY_FUNCTION__)) | |||
4871 | "no parameter for argument")((ParamIdx < ResolvedTemplate->getTemplateParameters()-> size() && "no parameter for argument") ? static_cast< void> (0) : __assert_fail ("ParamIdx < ResolvedTemplate->getTemplateParameters()->size() && \"no parameter for argument\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4871, __PRETTY_FUNCTION__)); | |||
4872 | Param = ResolvedTemplate->getTemplateParameters()->getParam(ParamIdx); | |||
4873 | ||||
4874 | // If we reach an expanded parameter pack whose argument isn't in pack | |||
4875 | // form, that means Sema couldn't figure out which arguments belonged to | |||
4876 | // it, because it contains a pack expansion. Track the expanded pack for | |||
4877 | // all further template arguments until we hit that pack expansion. | |||
4878 | if (Param->isParameterPack() && Arg.getKind() != TemplateArgument::Pack) { | |||
4879 | assert(getExpandedPackSize(Param) &&((getExpandedPackSize(Param) && "failed to form pack argument for parameter pack" ) ? static_cast<void> (0) : __assert_fail ("getExpandedPackSize(Param) && \"failed to form pack argument for parameter pack\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4880, __PRETTY_FUNCTION__)) | |||
4880 | "failed to form pack argument for parameter pack")((getExpandedPackSize(Param) && "failed to form pack argument for parameter pack" ) ? static_cast<void> (0) : __assert_fail ("getExpandedPackSize(Param) && \"failed to form pack argument for parameter pack\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4880, __PRETTY_FUNCTION__)); | |||
4881 | UnresolvedExpandedPack = Param; | |||
4882 | } | |||
4883 | } | |||
4884 | ||||
4885 | // If we encounter a pack argument that is expanded into a non-pack | |||
4886 | // parameter, we can no longer track parameter / argument correspondence, | |||
4887 | // and need to use exact types from this point onwards. | |||
4888 | if (Arg.isPackExpansion() && | |||
4889 | (!Param->isParameterPack() || UnresolvedExpandedPack)) { | |||
4890 | SeenPackExpansionIntoNonPack = true; | |||
4891 | return true; | |||
4892 | } | |||
4893 | ||||
4894 | // We need exact types for function template arguments because they might be | |||
4895 | // overloaded on template parameter type. As a special case, a member | |||
4896 | // function template of a generic lambda is not overloadable. | |||
4897 | if (auto *FTD = dyn_cast<FunctionTemplateDecl>(ResolvedTemplate)) { | |||
4898 | auto *RD = dyn_cast<CXXRecordDecl>(FTD->getDeclContext()); | |||
4899 | if (!RD || !RD->isGenericLambda()) | |||
4900 | return true; | |||
4901 | } | |||
4902 | ||||
4903 | // Otherwise, we only need a correct type if the parameter has a deduced | |||
4904 | // type. | |||
4905 | // | |||
4906 | // Note: for an expanded parameter pack, getType() returns the type prior | |||
4907 | // to expansion. We could ask for the expanded type with getExpansionType(), | |||
4908 | // but it doesn't matter because substitution and expansion don't affect | |||
4909 | // whether a deduced type appears in the type. | |||
4910 | auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(Param); | |||
4911 | return NTTP && NTTP->getType()->getContainedDeducedType(); | |||
4912 | } | |||
4913 | }; | |||
4914 | } | |||
4915 | ||||
4916 | void CXXNameMangler::mangleTemplateArgs(TemplateName TN, | |||
4917 | const TemplateArgumentLoc *TemplateArgs, | |||
4918 | unsigned NumTemplateArgs) { | |||
4919 | // <template-args> ::= I <template-arg>+ E | |||
4920 | Out << 'I'; | |||
4921 | TemplateArgManglingInfo Info(TN); | |||
4922 | for (unsigned i = 0; i != NumTemplateArgs; ++i) | |||
4923 | mangleTemplateArg(TemplateArgs[i].getArgument(), | |||
4924 | Info.needExactType(i, TemplateArgs[i].getArgument())); | |||
4925 | Out << 'E'; | |||
4926 | } | |||
4927 | ||||
4928 | void CXXNameMangler::mangleTemplateArgs(TemplateName TN, | |||
4929 | const TemplateArgumentList &AL) { | |||
4930 | // <template-args> ::= I <template-arg>+ E | |||
4931 | Out << 'I'; | |||
4932 | TemplateArgManglingInfo Info(TN); | |||
4933 | for (unsigned i = 0, e = AL.size(); i != e; ++i) | |||
4934 | mangleTemplateArg(AL[i], Info.needExactType(i, AL[i])); | |||
4935 | Out << 'E'; | |||
4936 | } | |||
4937 | ||||
4938 | void CXXNameMangler::mangleTemplateArgs(TemplateName TN, | |||
4939 | const TemplateArgument *TemplateArgs, | |||
4940 | unsigned NumTemplateArgs) { | |||
4941 | // <template-args> ::= I <template-arg>+ E | |||
4942 | Out << 'I'; | |||
4943 | TemplateArgManglingInfo Info(TN); | |||
4944 | for (unsigned i = 0; i != NumTemplateArgs; ++i) | |||
4945 | mangleTemplateArg(TemplateArgs[i], Info.needExactType(i, TemplateArgs[i])); | |||
4946 | Out << 'E'; | |||
4947 | } | |||
4948 | ||||
4949 | void CXXNameMangler::mangleTemplateArg(TemplateArgument A, bool NeedExactType) { | |||
4950 | // <template-arg> ::= <type> # type or template | |||
4951 | // ::= X <expression> E # expression | |||
4952 | // ::= <expr-primary> # simple expressions | |||
4953 | // ::= J <template-arg>* E # argument pack | |||
4954 | if (!A.isInstantiationDependent() || A.isDependent()) | |||
4955 | A = Context.getASTContext().getCanonicalTemplateArgument(A); | |||
4956 | ||||
4957 | switch (A.getKind()) { | |||
4958 | case TemplateArgument::Null: | |||
4959 | llvm_unreachable("Cannot mangle NULL template argument")::llvm::llvm_unreachable_internal("Cannot mangle NULL template argument" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 4959); | |||
4960 | ||||
4961 | case TemplateArgument::Type: | |||
4962 | mangleType(A.getAsType()); | |||
4963 | break; | |||
4964 | case TemplateArgument::Template: | |||
4965 | // This is mangled as <type>. | |||
4966 | mangleType(A.getAsTemplate()); | |||
4967 | break; | |||
4968 | case TemplateArgument::TemplateExpansion: | |||
4969 | // <type> ::= Dp <type> # pack expansion (C++0x) | |||
4970 | Out << "Dp"; | |||
4971 | mangleType(A.getAsTemplateOrTemplatePattern()); | |||
4972 | break; | |||
4973 | case TemplateArgument::Expression: { | |||
4974 | // It's possible to end up with a DeclRefExpr here in certain | |||
4975 | // dependent cases, in which case we should mangle as a | |||
4976 | // declaration. | |||
4977 | const Expr *E = A.getAsExpr()->IgnoreParenImpCasts(); | |||
4978 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | |||
4979 | const ValueDecl *D = DRE->getDecl(); | |||
4980 | if (isa<VarDecl>(D) || isa<FunctionDecl>(D)) { | |||
4981 | Out << 'L'; | |||
4982 | mangle(D); | |||
4983 | Out << 'E'; | |||
4984 | break; | |||
4985 | } | |||
4986 | } | |||
4987 | ||||
4988 | Out << 'X'; | |||
4989 | mangleExpression(E); | |||
4990 | Out << 'E'; | |||
4991 | break; | |||
4992 | } | |||
4993 | case TemplateArgument::Integral: | |||
4994 | mangleIntegerLiteral(A.getIntegralType(), A.getAsIntegral()); | |||
4995 | break; | |||
4996 | case TemplateArgument::Declaration: { | |||
4997 | // <expr-primary> ::= L <mangled-name> E # external name | |||
4998 | ValueDecl *D = A.getAsDecl(); | |||
4999 | ||||
5000 | // Template parameter objects are modeled by reproducing a source form | |||
5001 | // produced as if by aggregate initialization. | |||
5002 | if (A.getParamTypeForDecl()->isRecordType()) { | |||
5003 | auto *TPO = cast<TemplateParamObjectDecl>(D); | |||
5004 | mangleValueInTemplateArg(TPO->getType().getUnqualifiedType(), | |||
5005 | TPO->getValue(), /*TopLevel=*/true, | |||
5006 | NeedExactType); | |||
5007 | break; | |||
5008 | } | |||
5009 | ||||
5010 | ASTContext &Ctx = Context.getASTContext(); | |||
5011 | APValue Value; | |||
5012 | if (D->isCXXInstanceMember()) | |||
5013 | // Simple pointer-to-member with no conversion. | |||
5014 | Value = APValue(D, /*IsDerivedMember=*/false, /*Path=*/{}); | |||
5015 | else if (D->getType()->isArrayType() && | |||
5016 | Ctx.hasSimilarType(Ctx.getDecayedType(D->getType()), | |||
5017 | A.getParamTypeForDecl()) && | |||
5018 | Ctx.getLangOpts().getClangABICompat() > | |||
5019 | LangOptions::ClangABI::Ver11) | |||
5020 | // Build a value corresponding to this implicit array-to-pointer decay. | |||
5021 | Value = APValue(APValue::LValueBase(D), CharUnits::Zero(), | |||
5022 | {APValue::LValuePathEntry::ArrayIndex(0)}, | |||
5023 | /*OnePastTheEnd=*/false); | |||
5024 | else | |||
5025 | // Regular pointer or reference to a declaration. | |||
5026 | Value = APValue(APValue::LValueBase(D), CharUnits::Zero(), | |||
5027 | ArrayRef<APValue::LValuePathEntry>(), | |||
5028 | /*OnePastTheEnd=*/false); | |||
5029 | mangleValueInTemplateArg(A.getParamTypeForDecl(), Value, /*TopLevel=*/true, | |||
5030 | NeedExactType); | |||
5031 | break; | |||
5032 | } | |||
5033 | case TemplateArgument::NullPtr: { | |||
5034 | mangleNullPointer(A.getNullPtrType()); | |||
5035 | break; | |||
5036 | } | |||
5037 | case TemplateArgument::Pack: { | |||
5038 | // <template-arg> ::= J <template-arg>* E | |||
5039 | Out << 'J'; | |||
5040 | for (const auto &P : A.pack_elements()) | |||
5041 | mangleTemplateArg(P, NeedExactType); | |||
5042 | Out << 'E'; | |||
5043 | } | |||
5044 | } | |||
5045 | } | |||
5046 | ||||
5047 | /// Determine whether a given value is equivalent to zero-initialization for | |||
5048 | /// the purpose of discarding a trailing portion of a 'tl' mangling. | |||
5049 | /// | |||
5050 | /// Note that this is not in general equivalent to determining whether the | |||
5051 | /// value has an all-zeroes bit pattern. | |||
5052 | static bool isZeroInitialized(QualType T, const APValue &V) { | |||
5053 | // FIXME: mangleValueInTemplateArg has quadratic time complexity in | |||
5054 | // pathological cases due to using this, but it's a little awkward | |||
5055 | // to do this in linear time in general. | |||
5056 | switch (V.getKind()) { | |||
5057 | case APValue::None: | |||
5058 | case APValue::Indeterminate: | |||
5059 | case APValue::AddrLabelDiff: | |||
5060 | return false; | |||
5061 | ||||
5062 | case APValue::Struct: { | |||
5063 | const CXXRecordDecl *RD = T->getAsCXXRecordDecl(); | |||
5064 | assert(RD && "unexpected type for record value")((RD && "unexpected type for record value") ? static_cast <void> (0) : __assert_fail ("RD && \"unexpected type for record value\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5064, __PRETTY_FUNCTION__)); | |||
5065 | unsigned I = 0; | |||
5066 | for (const CXXBaseSpecifier &BS : RD->bases()) { | |||
5067 | if (!isZeroInitialized(BS.getType(), V.getStructBase(I))) | |||
5068 | return false; | |||
5069 | ++I; | |||
5070 | } | |||
5071 | I = 0; | |||
5072 | for (const FieldDecl *FD : RD->fields()) { | |||
5073 | if (!FD->isUnnamedBitfield() && | |||
5074 | !isZeroInitialized(FD->getType(), V.getStructField(I))) | |||
5075 | return false; | |||
5076 | ++I; | |||
5077 | } | |||
5078 | return true; | |||
5079 | } | |||
5080 | ||||
5081 | case APValue::Union: { | |||
5082 | const CXXRecordDecl *RD = T->getAsCXXRecordDecl(); | |||
5083 | assert(RD && "unexpected type for union value")((RD && "unexpected type for union value") ? static_cast <void> (0) : __assert_fail ("RD && \"unexpected type for union value\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5083, __PRETTY_FUNCTION__)); | |||
5084 | // Zero-initialization zeroes the first non-unnamed-bitfield field, if any. | |||
5085 | for (const FieldDecl *FD : RD->fields()) { | |||
5086 | if (!FD->isUnnamedBitfield()) | |||
5087 | return V.getUnionField() && declaresSameEntity(FD, V.getUnionField()) && | |||
5088 | isZeroInitialized(FD->getType(), V.getUnionValue()); | |||
5089 | } | |||
5090 | // If there are no fields (other than unnamed bitfields), the value is | |||
5091 | // necessarily zero-initialized. | |||
5092 | return true; | |||
5093 | } | |||
5094 | ||||
5095 | case APValue::Array: { | |||
5096 | QualType ElemT(T->getArrayElementTypeNoTypeQual(), 0); | |||
5097 | for (unsigned I = 0, N = V.getArrayInitializedElts(); I != N; ++I) | |||
5098 | if (!isZeroInitialized(ElemT, V.getArrayInitializedElt(I))) | |||
5099 | return false; | |||
5100 | return !V.hasArrayFiller() || isZeroInitialized(ElemT, V.getArrayFiller()); | |||
5101 | } | |||
5102 | ||||
5103 | case APValue::Vector: { | |||
5104 | const VectorType *VT = T->castAs<VectorType>(); | |||
5105 | for (unsigned I = 0, N = V.getVectorLength(); I != N; ++I) | |||
5106 | if (!isZeroInitialized(VT->getElementType(), V.getVectorElt(I))) | |||
5107 | return false; | |||
5108 | return true; | |||
5109 | } | |||
5110 | ||||
5111 | case APValue::Int: | |||
5112 | return !V.getInt(); | |||
5113 | ||||
5114 | case APValue::Float: | |||
5115 | return V.getFloat().isPosZero(); | |||
5116 | ||||
5117 | case APValue::FixedPoint: | |||
5118 | return !V.getFixedPoint().getValue(); | |||
5119 | ||||
5120 | case APValue::ComplexFloat: | |||
5121 | return V.getComplexFloatReal().isPosZero() && | |||
5122 | V.getComplexFloatImag().isPosZero(); | |||
5123 | ||||
5124 | case APValue::ComplexInt: | |||
5125 | return !V.getComplexIntReal() && !V.getComplexIntImag(); | |||
5126 | ||||
5127 | case APValue::LValue: | |||
5128 | return V.isNullPointer(); | |||
5129 | ||||
5130 | case APValue::MemberPointer: | |||
5131 | return !V.getMemberPointerDecl(); | |||
5132 | } | |||
5133 | ||||
5134 | llvm_unreachable("Unhandled APValue::ValueKind enum")::llvm::llvm_unreachable_internal("Unhandled APValue::ValueKind enum" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5134); | |||
5135 | } | |||
5136 | ||||
5137 | static QualType getLValueType(ASTContext &Ctx, const APValue &LV) { | |||
5138 | QualType T = LV.getLValueBase().getType(); | |||
5139 | for (APValue::LValuePathEntry E : LV.getLValuePath()) { | |||
5140 | if (const ArrayType *AT = Ctx.getAsArrayType(T)) | |||
5141 | T = AT->getElementType(); | |||
5142 | else if (const FieldDecl *FD = | |||
5143 | dyn_cast<FieldDecl>(E.getAsBaseOrMember().getPointer())) | |||
5144 | T = FD->getType(); | |||
5145 | else | |||
5146 | T = Ctx.getRecordType( | |||
5147 | cast<CXXRecordDecl>(E.getAsBaseOrMember().getPointer())); | |||
5148 | } | |||
5149 | return T; | |||
5150 | } | |||
5151 | ||||
5152 | void CXXNameMangler::mangleValueInTemplateArg(QualType T, const APValue &V, | |||
5153 | bool TopLevel, | |||
5154 | bool NeedExactType) { | |||
5155 | // Ignore all top-level cv-qualifiers, to match GCC. | |||
5156 | Qualifiers Quals; | |||
5157 | T = getASTContext().getUnqualifiedArrayType(T, Quals); | |||
5158 | ||||
5159 | // A top-level expression that's not a primary expression is wrapped in X...E. | |||
5160 | bool IsPrimaryExpr = true; | |||
5161 | auto NotPrimaryExpr = [&] { | |||
5162 | if (TopLevel && IsPrimaryExpr) | |||
5163 | Out << 'X'; | |||
5164 | IsPrimaryExpr = false; | |||
5165 | }; | |||
5166 | ||||
5167 | // Proposed in https://github.com/itanium-cxx-abi/cxx-abi/issues/63. | |||
5168 | switch (V.getKind()) { | |||
5169 | case APValue::None: | |||
5170 | case APValue::Indeterminate: | |||
5171 | Out << 'L'; | |||
5172 | mangleType(T); | |||
5173 | Out << 'E'; | |||
5174 | break; | |||
5175 | ||||
5176 | case APValue::AddrLabelDiff: | |||
5177 | llvm_unreachable("unexpected value kind in template argument")::llvm::llvm_unreachable_internal("unexpected value kind in template argument" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5177); | |||
5178 | ||||
5179 | case APValue::Struct: { | |||
5180 | const CXXRecordDecl *RD = T->getAsCXXRecordDecl(); | |||
5181 | assert(RD && "unexpected type for record value")((RD && "unexpected type for record value") ? static_cast <void> (0) : __assert_fail ("RD && \"unexpected type for record value\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5181, __PRETTY_FUNCTION__)); | |||
5182 | ||||
5183 | // Drop trailing zero-initialized elements. | |||
5184 | llvm::SmallVector<const FieldDecl *, 16> Fields(RD->field_begin(), | |||
5185 | RD->field_end()); | |||
5186 | while ( | |||
5187 | !Fields.empty() && | |||
5188 | (Fields.back()->isUnnamedBitfield() || | |||
5189 | isZeroInitialized(Fields.back()->getType(), | |||
5190 | V.getStructField(Fields.back()->getFieldIndex())))) { | |||
5191 | Fields.pop_back(); | |||
5192 | } | |||
5193 | llvm::ArrayRef<CXXBaseSpecifier> Bases(RD->bases_begin(), RD->bases_end()); | |||
5194 | if (Fields.empty()) { | |||
5195 | while (!Bases.empty() && | |||
5196 | isZeroInitialized(Bases.back().getType(), | |||
5197 | V.getStructBase(Bases.size() - 1))) | |||
5198 | Bases = Bases.drop_back(); | |||
5199 | } | |||
5200 | ||||
5201 | // <expression> ::= tl <type> <braced-expression>* E | |||
5202 | NotPrimaryExpr(); | |||
5203 | Out << "tl"; | |||
5204 | mangleType(T); | |||
5205 | for (unsigned I = 0, N = Bases.size(); I != N; ++I) | |||
5206 | mangleValueInTemplateArg(Bases[I].getType(), V.getStructBase(I), false); | |||
5207 | for (unsigned I = 0, N = Fields.size(); I != N; ++I) { | |||
5208 | if (Fields[I]->isUnnamedBitfield()) | |||
5209 | continue; | |||
5210 | mangleValueInTemplateArg(Fields[I]->getType(), | |||
5211 | V.getStructField(Fields[I]->getFieldIndex()), | |||
5212 | false); | |||
5213 | } | |||
5214 | Out << 'E'; | |||
5215 | break; | |||
5216 | } | |||
5217 | ||||
5218 | case APValue::Union: { | |||
5219 | assert(T->getAsCXXRecordDecl() && "unexpected type for union value")((T->getAsCXXRecordDecl() && "unexpected type for union value" ) ? static_cast<void> (0) : __assert_fail ("T->getAsCXXRecordDecl() && \"unexpected type for union value\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5219, __PRETTY_FUNCTION__)); | |||
5220 | const FieldDecl *FD = V.getUnionField(); | |||
5221 | ||||
5222 | if (!FD) { | |||
5223 | Out << 'L'; | |||
5224 | mangleType(T); | |||
5225 | Out << 'E'; | |||
5226 | break; | |||
5227 | } | |||
5228 | ||||
5229 | // <braced-expression> ::= di <field source-name> <braced-expression> | |||
5230 | NotPrimaryExpr(); | |||
5231 | Out << "tl"; | |||
5232 | mangleType(T); | |||
5233 | if (!isZeroInitialized(T, V)) { | |||
5234 | Out << "di"; | |||
5235 | mangleSourceName(FD->getIdentifier()); | |||
5236 | mangleValueInTemplateArg(FD->getType(), V.getUnionValue(), false); | |||
5237 | } | |||
5238 | Out << 'E'; | |||
5239 | break; | |||
5240 | } | |||
5241 | ||||
5242 | case APValue::Array: { | |||
5243 | QualType ElemT(T->getArrayElementTypeNoTypeQual(), 0); | |||
5244 | ||||
5245 | NotPrimaryExpr(); | |||
5246 | Out << "tl"; | |||
5247 | mangleType(T); | |||
5248 | ||||
5249 | // Drop trailing zero-initialized elements. | |||
5250 | unsigned N = V.getArraySize(); | |||
5251 | if (!V.hasArrayFiller() || isZeroInitialized(ElemT, V.getArrayFiller())) { | |||
5252 | N = V.getArrayInitializedElts(); | |||
5253 | while (N && isZeroInitialized(ElemT, V.getArrayInitializedElt(N - 1))) | |||
5254 | --N; | |||
5255 | } | |||
5256 | ||||
5257 | for (unsigned I = 0; I != N; ++I) { | |||
5258 | const APValue &Elem = I < V.getArrayInitializedElts() | |||
5259 | ? V.getArrayInitializedElt(I) | |||
5260 | : V.getArrayFiller(); | |||
5261 | mangleValueInTemplateArg(ElemT, Elem, false); | |||
5262 | } | |||
5263 | Out << 'E'; | |||
5264 | break; | |||
5265 | } | |||
5266 | ||||
5267 | case APValue::Vector: { | |||
5268 | const VectorType *VT = T->castAs<VectorType>(); | |||
5269 | ||||
5270 | NotPrimaryExpr(); | |||
5271 | Out << "tl"; | |||
5272 | mangleType(T); | |||
5273 | unsigned N = V.getVectorLength(); | |||
5274 | while (N && isZeroInitialized(VT->getElementType(), V.getVectorElt(N - 1))) | |||
5275 | --N; | |||
5276 | for (unsigned I = 0; I != N; ++I) | |||
5277 | mangleValueInTemplateArg(VT->getElementType(), V.getVectorElt(I), false); | |||
5278 | Out << 'E'; | |||
5279 | break; | |||
5280 | } | |||
5281 | ||||
5282 | case APValue::Int: | |||
5283 | mangleIntegerLiteral(T, V.getInt()); | |||
5284 | break; | |||
5285 | ||||
5286 | case APValue::Float: | |||
5287 | mangleFloatLiteral(T, V.getFloat()); | |||
5288 | break; | |||
5289 | ||||
5290 | case APValue::FixedPoint: | |||
5291 | mangleFixedPointLiteral(); | |||
5292 | break; | |||
5293 | ||||
5294 | case APValue::ComplexFloat: { | |||
5295 | const ComplexType *CT = T->castAs<ComplexType>(); | |||
5296 | NotPrimaryExpr(); | |||
5297 | Out << "tl"; | |||
5298 | mangleType(T); | |||
5299 | if (!V.getComplexFloatReal().isPosZero() || | |||
5300 | !V.getComplexFloatImag().isPosZero()) | |||
5301 | mangleFloatLiteral(CT->getElementType(), V.getComplexFloatReal()); | |||
5302 | if (!V.getComplexFloatImag().isPosZero()) | |||
5303 | mangleFloatLiteral(CT->getElementType(), V.getComplexFloatImag()); | |||
5304 | Out << 'E'; | |||
5305 | break; | |||
5306 | } | |||
5307 | ||||
5308 | case APValue::ComplexInt: { | |||
5309 | const ComplexType *CT = T->castAs<ComplexType>(); | |||
5310 | NotPrimaryExpr(); | |||
5311 | Out << "tl"; | |||
5312 | mangleType(T); | |||
5313 | if (V.getComplexIntReal().getBoolValue() || | |||
5314 | V.getComplexIntImag().getBoolValue()) | |||
5315 | mangleIntegerLiteral(CT->getElementType(), V.getComplexIntReal()); | |||
5316 | if (V.getComplexIntImag().getBoolValue()) | |||
5317 | mangleIntegerLiteral(CT->getElementType(), V.getComplexIntImag()); | |||
5318 | Out << 'E'; | |||
5319 | break; | |||
5320 | } | |||
5321 | ||||
5322 | case APValue::LValue: { | |||
5323 | // Proposed in https://github.com/itanium-cxx-abi/cxx-abi/issues/47. | |||
5324 | assert((T->isPointerType() || T->isReferenceType()) &&(((T->isPointerType() || T->isReferenceType()) && "unexpected type for LValue template arg") ? static_cast< void> (0) : __assert_fail ("(T->isPointerType() || T->isReferenceType()) && \"unexpected type for LValue template arg\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5325, __PRETTY_FUNCTION__)) | |||
5325 | "unexpected type for LValue template arg")(((T->isPointerType() || T->isReferenceType()) && "unexpected type for LValue template arg") ? static_cast< void> (0) : __assert_fail ("(T->isPointerType() || T->isReferenceType()) && \"unexpected type for LValue template arg\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5325, __PRETTY_FUNCTION__)); | |||
5326 | ||||
5327 | if (V.isNullPointer()) { | |||
5328 | mangleNullPointer(T); | |||
5329 | break; | |||
5330 | } | |||
5331 | ||||
5332 | APValue::LValueBase B = V.getLValueBase(); | |||
5333 | if (!B) { | |||
5334 | // Non-standard mangling for integer cast to a pointer; this can only | |||
5335 | // occur as an extension. | |||
5336 | CharUnits Offset = V.getLValueOffset(); | |||
5337 | if (Offset.isZero()) { | |||
5338 | // This is reinterpret_cast<T*>(0), not a null pointer. Mangle this as | |||
5339 | // a cast, because L <type> 0 E means something else. | |||
5340 | NotPrimaryExpr(); | |||
5341 | Out << "rc"; | |||
5342 | mangleType(T); | |||
5343 | Out << "Li0E"; | |||
5344 | if (TopLevel) | |||
5345 | Out << 'E'; | |||
5346 | } else { | |||
5347 | Out << "L"; | |||
5348 | mangleType(T); | |||
5349 | Out << Offset.getQuantity() << 'E'; | |||
5350 | } | |||
5351 | break; | |||
5352 | } | |||
5353 | ||||
5354 | ASTContext &Ctx = Context.getASTContext(); | |||
5355 | ||||
5356 | enum { Base, Offset, Path } Kind; | |||
5357 | if (!V.hasLValuePath()) { | |||
5358 | // Mangle as (T*)((char*)&base + N). | |||
5359 | if (T->isReferenceType()) { | |||
5360 | NotPrimaryExpr(); | |||
5361 | Out << "decvP"; | |||
5362 | mangleType(T->getPointeeType()); | |||
5363 | } else { | |||
5364 | NotPrimaryExpr(); | |||
5365 | Out << "cv"; | |||
5366 | mangleType(T); | |||
5367 | } | |||
5368 | Out << "plcvPcad"; | |||
5369 | Kind = Offset; | |||
5370 | } else { | |||
5371 | if (!V.getLValuePath().empty() || V.isLValueOnePastTheEnd()) { | |||
5372 | NotPrimaryExpr(); | |||
5373 | // A final conversion to the template parameter's type is usually | |||
5374 | // folded into the 'so' mangling, but we can't do that for 'void*' | |||
5375 | // parameters without introducing collisions. | |||
5376 | if (NeedExactType && T->isVoidPointerType()) { | |||
5377 | Out << "cv"; | |||
5378 | mangleType(T); | |||
5379 | } | |||
5380 | if (T->isPointerType()) | |||
5381 | Out << "ad"; | |||
5382 | Out << "so"; | |||
5383 | mangleType(T->isVoidPointerType() | |||
5384 | ? getLValueType(Ctx, V).getUnqualifiedType() | |||
5385 | : T->getPointeeType()); | |||
5386 | Kind = Path; | |||
5387 | } else { | |||
5388 | if (NeedExactType && | |||
5389 | !Ctx.hasSameType(T->getPointeeType(), getLValueType(Ctx, V)) && | |||
5390 | Ctx.getLangOpts().getClangABICompat() > | |||
5391 | LangOptions::ClangABI::Ver11) { | |||
5392 | NotPrimaryExpr(); | |||
5393 | Out << "cv"; | |||
5394 | mangleType(T); | |||
5395 | } | |||
5396 | if (T->isPointerType()) { | |||
5397 | NotPrimaryExpr(); | |||
5398 | Out << "ad"; | |||
5399 | } | |||
5400 | Kind = Base; | |||
5401 | } | |||
5402 | } | |||
5403 | ||||
5404 | QualType TypeSoFar = B.getType(); | |||
5405 | if (auto *VD = B.dyn_cast<const ValueDecl*>()) { | |||
5406 | Out << 'L'; | |||
5407 | mangle(VD); | |||
5408 | Out << 'E'; | |||
5409 | } else if (auto *E = B.dyn_cast<const Expr*>()) { | |||
5410 | NotPrimaryExpr(); | |||
5411 | mangleExpression(E); | |||
5412 | } else if (auto TI = B.dyn_cast<TypeInfoLValue>()) { | |||
5413 | NotPrimaryExpr(); | |||
5414 | Out << "ti"; | |||
5415 | mangleType(QualType(TI.getType(), 0)); | |||
5416 | } else { | |||
5417 | // We should never see dynamic allocations here. | |||
5418 | llvm_unreachable("unexpected lvalue base kind in template argument")::llvm::llvm_unreachable_internal("unexpected lvalue base kind in template argument" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5418); | |||
5419 | } | |||
5420 | ||||
5421 | switch (Kind) { | |||
5422 | case Base: | |||
5423 | break; | |||
5424 | ||||
5425 | case Offset: | |||
5426 | Out << 'L'; | |||
5427 | mangleType(Ctx.getPointerDiffType()); | |||
5428 | mangleNumber(V.getLValueOffset().getQuantity()); | |||
5429 | Out << 'E'; | |||
5430 | break; | |||
5431 | ||||
5432 | case Path: | |||
5433 | // <expression> ::= so <referent type> <expr> [<offset number>] | |||
5434 | // <union-selector>* [p] E | |||
5435 | if (!V.getLValueOffset().isZero()) | |||
5436 | mangleNumber(V.getLValueOffset().getQuantity()); | |||
5437 | ||||
5438 | // We model a past-the-end array pointer as array indexing with index N, | |||
5439 | // not with the "past the end" flag. Compensate for that. | |||
5440 | bool OnePastTheEnd = V.isLValueOnePastTheEnd(); | |||
5441 | ||||
5442 | for (APValue::LValuePathEntry E : V.getLValuePath()) { | |||
5443 | if (auto *AT = TypeSoFar->getAsArrayTypeUnsafe()) { | |||
5444 | if (auto *CAT = dyn_cast<ConstantArrayType>(AT)) | |||
5445 | OnePastTheEnd |= CAT->getSize() == E.getAsArrayIndex(); | |||
5446 | TypeSoFar = AT->getElementType(); | |||
5447 | } else { | |||
5448 | const Decl *D = E.getAsBaseOrMember().getPointer(); | |||
5449 | if (auto *FD = dyn_cast<FieldDecl>(D)) { | |||
5450 | // <union-selector> ::= _ <number> | |||
5451 | if (FD->getParent()->isUnion()) { | |||
5452 | Out << '_'; | |||
5453 | if (FD->getFieldIndex()) | |||
5454 | Out << (FD->getFieldIndex() - 1); | |||
5455 | } | |||
5456 | TypeSoFar = FD->getType(); | |||
5457 | } else { | |||
5458 | TypeSoFar = Ctx.getRecordType(cast<CXXRecordDecl>(D)); | |||
5459 | } | |||
5460 | } | |||
5461 | } | |||
5462 | ||||
5463 | if (OnePastTheEnd) | |||
5464 | Out << 'p'; | |||
5465 | Out << 'E'; | |||
5466 | break; | |||
5467 | } | |||
5468 | ||||
5469 | break; | |||
5470 | } | |||
5471 | ||||
5472 | case APValue::MemberPointer: | |||
5473 | // Proposed in https://github.com/itanium-cxx-abi/cxx-abi/issues/47. | |||
5474 | if (!V.getMemberPointerDecl()) { | |||
5475 | mangleNullPointer(T); | |||
5476 | break; | |||
5477 | } | |||
5478 | ||||
5479 | ASTContext &Ctx = Context.getASTContext(); | |||
5480 | ||||
5481 | NotPrimaryExpr(); | |||
5482 | if (!V.getMemberPointerPath().empty()) { | |||
5483 | Out << "mc"; | |||
5484 | mangleType(T); | |||
5485 | } else if (NeedExactType && | |||
5486 | !Ctx.hasSameType( | |||
5487 | T->castAs<MemberPointerType>()->getPointeeType(), | |||
5488 | V.getMemberPointerDecl()->getType()) && | |||
5489 | Ctx.getLangOpts().getClangABICompat() > | |||
5490 | LangOptions::ClangABI::Ver11) { | |||
5491 | Out << "cv"; | |||
5492 | mangleType(T); | |||
5493 | } | |||
5494 | Out << "adL"; | |||
5495 | mangle(V.getMemberPointerDecl()); | |||
5496 | Out << 'E'; | |||
5497 | if (!V.getMemberPointerPath().empty()) { | |||
5498 | CharUnits Offset = | |||
5499 | Context.getASTContext().getMemberPointerPathAdjustment(V); | |||
5500 | if (!Offset.isZero()) | |||
5501 | mangleNumber(Offset.getQuantity()); | |||
5502 | Out << 'E'; | |||
5503 | } | |||
5504 | break; | |||
5505 | } | |||
5506 | ||||
5507 | if (TopLevel && !IsPrimaryExpr) | |||
5508 | Out << 'E'; | |||
5509 | } | |||
5510 | ||||
5511 | void CXXNameMangler::mangleTemplateParameter(unsigned Depth, unsigned Index) { | |||
5512 | // <template-param> ::= T_ # first template parameter | |||
5513 | // ::= T <parameter-2 non-negative number> _ | |||
5514 | // ::= TL <L-1 non-negative number> __ | |||
5515 | // ::= TL <L-1 non-negative number> _ | |||
5516 | // <parameter-2 non-negative number> _ | |||
5517 | // | |||
5518 | // The latter two manglings are from a proposal here: | |||
5519 | // https://github.com/itanium-cxx-abi/cxx-abi/issues/31#issuecomment-528122117 | |||
5520 | Out << 'T'; | |||
5521 | if (Depth != 0) | |||
5522 | Out << 'L' << (Depth - 1) << '_'; | |||
5523 | if (Index != 0) | |||
5524 | Out << (Index - 1); | |||
5525 | Out << '_'; | |||
5526 | } | |||
5527 | ||||
5528 | void CXXNameMangler::mangleSeqID(unsigned SeqID) { | |||
5529 | if (SeqID == 1) | |||
5530 | Out << '0'; | |||
5531 | else if (SeqID > 1) { | |||
5532 | SeqID--; | |||
5533 | ||||
5534 | // <seq-id> is encoded in base-36, using digits and upper case letters. | |||
5535 | char Buffer[7]; // log(2**32) / log(36) ~= 7 | |||
5536 | MutableArrayRef<char> BufferRef(Buffer); | |||
5537 | MutableArrayRef<char>::reverse_iterator I = BufferRef.rbegin(); | |||
5538 | ||||
5539 | for (; SeqID != 0; SeqID /= 36) { | |||
5540 | unsigned C = SeqID % 36; | |||
5541 | *I++ = (C < 10 ? '0' + C : 'A' + C - 10); | |||
5542 | } | |||
5543 | ||||
5544 | Out.write(I.base(), I - BufferRef.rbegin()); | |||
5545 | } | |||
5546 | Out << '_'; | |||
5547 | } | |||
5548 | ||||
5549 | void CXXNameMangler::mangleExistingSubstitution(TemplateName tname) { | |||
5550 | bool result = mangleSubstitution(tname); | |||
5551 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5551, __PRETTY_FUNCTION__)); | |||
5552 | (void) result; | |||
5553 | } | |||
5554 | ||||
5555 | // <substitution> ::= S <seq-id> _ | |||
5556 | // ::= S_ | |||
5557 | bool CXXNameMangler::mangleSubstitution(const NamedDecl *ND) { | |||
5558 | // Try one of the standard substitutions first. | |||
5559 | if (mangleStandardSubstitution(ND)) | |||
5560 | return true; | |||
5561 | ||||
5562 | ND = cast<NamedDecl>(ND->getCanonicalDecl()); | |||
5563 | return mangleSubstitution(reinterpret_cast<uintptr_t>(ND)); | |||
5564 | } | |||
5565 | ||||
5566 | /// Determine whether the given type has any qualifiers that are relevant for | |||
5567 | /// substitutions. | |||
5568 | static bool hasMangledSubstitutionQualifiers(QualType T) { | |||
5569 | Qualifiers Qs = T.getQualifiers(); | |||
5570 | return Qs.getCVRQualifiers() || Qs.hasAddressSpace() || Qs.hasUnaligned(); | |||
5571 | } | |||
5572 | ||||
5573 | bool CXXNameMangler::mangleSubstitution(QualType T) { | |||
5574 | if (!hasMangledSubstitutionQualifiers(T)) { | |||
5575 | if (const RecordType *RT = T->getAs<RecordType>()) | |||
5576 | return mangleSubstitution(RT->getDecl()); | |||
5577 | } | |||
5578 | ||||
5579 | uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); | |||
5580 | ||||
5581 | return mangleSubstitution(TypePtr); | |||
5582 | } | |||
5583 | ||||
5584 | bool CXXNameMangler::mangleSubstitution(TemplateName Template) { | |||
5585 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) | |||
5586 | return mangleSubstitution(TD); | |||
5587 | ||||
5588 | Template = Context.getASTContext().getCanonicalTemplateName(Template); | |||
5589 | return mangleSubstitution( | |||
5590 | reinterpret_cast<uintptr_t>(Template.getAsVoidPointer())); | |||
5591 | } | |||
5592 | ||||
5593 | bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) { | |||
5594 | llvm::DenseMap<uintptr_t, unsigned>::iterator I = Substitutions.find(Ptr); | |||
5595 | if (I == Substitutions.end()) | |||
5596 | return false; | |||
5597 | ||||
5598 | unsigned SeqID = I->second; | |||
5599 | Out << 'S'; | |||
5600 | mangleSeqID(SeqID); | |||
5601 | ||||
5602 | return true; | |||
5603 | } | |||
5604 | ||||
5605 | static bool isCharType(QualType T) { | |||
5606 | if (T.isNull()) | |||
5607 | return false; | |||
5608 | ||||
5609 | return T->isSpecificBuiltinType(BuiltinType::Char_S) || | |||
5610 | T->isSpecificBuiltinType(BuiltinType::Char_U); | |||
5611 | } | |||
5612 | ||||
5613 | /// Returns whether a given type is a template specialization of a given name | |||
5614 | /// with a single argument of type char. | |||
5615 | static bool isCharSpecialization(QualType T, const char *Name) { | |||
5616 | if (T.isNull()) | |||
5617 | return false; | |||
5618 | ||||
5619 | const RecordType *RT = T->getAs<RecordType>(); | |||
5620 | if (!RT) | |||
5621 | return false; | |||
5622 | ||||
5623 | const ClassTemplateSpecializationDecl *SD = | |||
5624 | dyn_cast<ClassTemplateSpecializationDecl>(RT->getDecl()); | |||
5625 | if (!SD) | |||
5626 | return false; | |||
5627 | ||||
5628 | if (!isStdNamespace(getEffectiveDeclContext(SD))) | |||
5629 | return false; | |||
5630 | ||||
5631 | const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); | |||
5632 | if (TemplateArgs.size() != 1) | |||
5633 | return false; | |||
5634 | ||||
5635 | if (!isCharType(TemplateArgs[0].getAsType())) | |||
5636 | return false; | |||
5637 | ||||
5638 | return SD->getIdentifier()->getName() == Name; | |||
5639 | } | |||
5640 | ||||
5641 | template <std::size_t StrLen> | |||
5642 | static bool isStreamCharSpecialization(const ClassTemplateSpecializationDecl*SD, | |||
5643 | const char (&Str)[StrLen]) { | |||
5644 | if (!SD->getIdentifier()->isStr(Str)) | |||
5645 | return false; | |||
5646 | ||||
5647 | const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); | |||
5648 | if (TemplateArgs.size() != 2) | |||
5649 | return false; | |||
5650 | ||||
5651 | if (!isCharType(TemplateArgs[0].getAsType())) | |||
5652 | return false; | |||
5653 | ||||
5654 | if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits")) | |||
5655 | return false; | |||
5656 | ||||
5657 | return true; | |||
5658 | } | |||
5659 | ||||
5660 | bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) { | |||
5661 | // <substitution> ::= St # ::std:: | |||
5662 | if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) { | |||
5663 | if (isStd(NS)) { | |||
5664 | Out << "St"; | |||
5665 | return true; | |||
5666 | } | |||
5667 | } | |||
5668 | ||||
5669 | if (const ClassTemplateDecl *TD = dyn_cast<ClassTemplateDecl>(ND)) { | |||
5670 | if (!isStdNamespace(getEffectiveDeclContext(TD))) | |||
5671 | return false; | |||
5672 | ||||
5673 | // <substitution> ::= Sa # ::std::allocator | |||
5674 | if (TD->getIdentifier()->isStr("allocator")) { | |||
5675 | Out << "Sa"; | |||
5676 | return true; | |||
5677 | } | |||
5678 | ||||
5679 | // <<substitution> ::= Sb # ::std::basic_string | |||
5680 | if (TD->getIdentifier()->isStr("basic_string")) { | |||
5681 | Out << "Sb"; | |||
5682 | return true; | |||
5683 | } | |||
5684 | } | |||
5685 | ||||
5686 | if (const ClassTemplateSpecializationDecl *SD = | |||
5687 | dyn_cast<ClassTemplateSpecializationDecl>(ND)) { | |||
5688 | if (!isStdNamespace(getEffectiveDeclContext(SD))) | |||
5689 | return false; | |||
5690 | ||||
5691 | // <substitution> ::= Ss # ::std::basic_string<char, | |||
5692 | // ::std::char_traits<char>, | |||
5693 | // ::std::allocator<char> > | |||
5694 | if (SD->getIdentifier()->isStr("basic_string")) { | |||
5695 | const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); | |||
5696 | ||||
5697 | if (TemplateArgs.size() != 3) | |||
5698 | return false; | |||
5699 | ||||
5700 | if (!isCharType(TemplateArgs[0].getAsType())) | |||
5701 | return false; | |||
5702 | ||||
5703 | if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits")) | |||
5704 | return false; | |||
5705 | ||||
5706 | if (!isCharSpecialization(TemplateArgs[2].getAsType(), "allocator")) | |||
5707 | return false; | |||
5708 | ||||
5709 | Out << "Ss"; | |||
5710 | return true; | |||
5711 | } | |||
5712 | ||||
5713 | // <substitution> ::= Si # ::std::basic_istream<char, | |||
5714 | // ::std::char_traits<char> > | |||
5715 | if (isStreamCharSpecialization(SD, "basic_istream")) { | |||
5716 | Out << "Si"; | |||
5717 | return true; | |||
5718 | } | |||
5719 | ||||
5720 | // <substitution> ::= So # ::std::basic_ostream<char, | |||
5721 | // ::std::char_traits<char> > | |||
5722 | if (isStreamCharSpecialization(SD, "basic_ostream")) { | |||
5723 | Out << "So"; | |||
5724 | return true; | |||
5725 | } | |||
5726 | ||||
5727 | // <substitution> ::= Sd # ::std::basic_iostream<char, | |||
5728 | // ::std::char_traits<char> > | |||
5729 | if (isStreamCharSpecialization(SD, "basic_iostream")) { | |||
5730 | Out << "Sd"; | |||
5731 | return true; | |||
5732 | } | |||
5733 | } | |||
5734 | return false; | |||
5735 | } | |||
5736 | ||||
5737 | void CXXNameMangler::addSubstitution(QualType T) { | |||
5738 | if (!hasMangledSubstitutionQualifiers(T)) { | |||
5739 | if (const RecordType *RT = T->getAs<RecordType>()) { | |||
5740 | addSubstitution(RT->getDecl()); | |||
5741 | return; | |||
5742 | } | |||
5743 | } | |||
5744 | ||||
5745 | uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); | |||
5746 | addSubstitution(TypePtr); | |||
5747 | } | |||
5748 | ||||
5749 | void CXXNameMangler::addSubstitution(TemplateName Template) { | |||
5750 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) | |||
5751 | return addSubstitution(TD); | |||
5752 | ||||
5753 | Template = Context.getASTContext().getCanonicalTemplateName(Template); | |||
5754 | addSubstitution(reinterpret_cast<uintptr_t>(Template.getAsVoidPointer())); | |||
5755 | } | |||
5756 | ||||
5757 | void CXXNameMangler::addSubstitution(uintptr_t Ptr) { | |||
5758 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5758, __PRETTY_FUNCTION__)); | |||
5759 | Substitutions[Ptr] = SeqID++; | |||
5760 | } | |||
5761 | ||||
5762 | void CXXNameMangler::extendSubstitutions(CXXNameMangler* Other) { | |||
5763 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5763, __PRETTY_FUNCTION__)); | |||
5764 | if (Other->SeqID > SeqID) { | |||
5765 | Substitutions.swap(Other->Substitutions); | |||
5766 | SeqID = Other->SeqID; | |||
5767 | } | |||
5768 | } | |||
5769 | ||||
5770 | CXXNameMangler::AbiTagList | |||
5771 | CXXNameMangler::makeFunctionReturnTypeTags(const FunctionDecl *FD) { | |||
5772 | // When derived abi tags are disabled there is no need to make any list. | |||
5773 | if (DisableDerivedAbiTags) | |||
5774 | return AbiTagList(); | |||
5775 | ||||
5776 | llvm::raw_null_ostream NullOutStream; | |||
5777 | CXXNameMangler TrackReturnTypeTags(*this, NullOutStream); | |||
5778 | TrackReturnTypeTags.disableDerivedAbiTags(); | |||
5779 | ||||
5780 | const FunctionProtoType *Proto = | |||
5781 | cast<FunctionProtoType>(FD->getType()->getAs<FunctionType>()); | |||
5782 | FunctionTypeDepthState saved = TrackReturnTypeTags.FunctionTypeDepth.push(); | |||
5783 | TrackReturnTypeTags.FunctionTypeDepth.enterResultType(); | |||
5784 | TrackReturnTypeTags.mangleType(Proto->getReturnType()); | |||
5785 | TrackReturnTypeTags.FunctionTypeDepth.leaveResultType(); | |||
5786 | TrackReturnTypeTags.FunctionTypeDepth.pop(saved); | |||
5787 | ||||
5788 | return TrackReturnTypeTags.AbiTagsRoot.getSortedUniqueUsedAbiTags(); | |||
5789 | } | |||
5790 | ||||
5791 | CXXNameMangler::AbiTagList | |||
5792 | CXXNameMangler::makeVariableTypeTags(const VarDecl *VD) { | |||
5793 | // When derived abi tags are disabled there is no need to make any list. | |||
5794 | if (DisableDerivedAbiTags) | |||
5795 | return AbiTagList(); | |||
5796 | ||||
5797 | llvm::raw_null_ostream NullOutStream; | |||
5798 | CXXNameMangler TrackVariableType(*this, NullOutStream); | |||
5799 | TrackVariableType.disableDerivedAbiTags(); | |||
5800 | ||||
5801 | TrackVariableType.mangleType(VD->getType()); | |||
5802 | ||||
5803 | return TrackVariableType.AbiTagsRoot.getSortedUniqueUsedAbiTags(); | |||
5804 | } | |||
5805 | ||||
5806 | bool CXXNameMangler::shouldHaveAbiTags(ItaniumMangleContextImpl &C, | |||
5807 | const VarDecl *VD) { | |||
5808 | llvm::raw_null_ostream NullOutStream; | |||
5809 | CXXNameMangler TrackAbiTags(C, NullOutStream, nullptr, true); | |||
5810 | TrackAbiTags.mangle(VD); | |||
5811 | return TrackAbiTags.AbiTagsRoot.getUsedAbiTags().size(); | |||
5812 | } | |||
5813 | ||||
5814 | // | |||
5815 | ||||
5816 | /// Mangles the name of the declaration D and emits that name to the given | |||
5817 | /// output stream. | |||
5818 | /// | |||
5819 | /// If the declaration D requires a mangled name, this routine will emit that | |||
5820 | /// mangled name to \p os and return true. Otherwise, \p os will be unchanged | |||
5821 | /// and this routine will return false. In this case, the caller should just | |||
5822 | /// emit the identifier of the declaration (\c D->getIdentifier()) as its | |||
5823 | /// name. | |||
5824 | void ItaniumMangleContextImpl::mangleCXXName(GlobalDecl GD, | |||
5825 | raw_ostream &Out) { | |||
5826 | const NamedDecl *D = cast<NamedDecl>(GD.getDecl()); | |||
5827 | assert((isa<FunctionDecl, VarDecl, TemplateParamObjectDecl>(D)) &&(((isa<FunctionDecl, VarDecl, TemplateParamObjectDecl>( D)) && "Invalid mangleName() call, argument is not a variable or function!" ) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl, VarDecl, TemplateParamObjectDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5828, __PRETTY_FUNCTION__)) | |||
5828 | "Invalid mangleName() call, argument is not a variable or function!")(((isa<FunctionDecl, VarDecl, TemplateParamObjectDecl>( D)) && "Invalid mangleName() call, argument is not a variable or function!" ) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl, VarDecl, TemplateParamObjectDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\"" , "/build/llvm-toolchain-snapshot-12~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5828, __PRETTY_FUNCTION__)); | |||
5829 | ||||
5830 | PrettyStackTraceDecl CrashInfo(D, SourceLocation(), | |||
5831 | getASTContext().getSourceManager(), | |||
5832 | "Mangling declaration"); | |||
5833 | ||||
5834 | if (auto *CD = dyn_cast<CXXConstructorDecl>(D)) { | |||
5835 | auto Type = GD.getCtorType(); | |||
5836 | CXXNameMangler Mangler(*this, Out, CD, Type); | |||
5837 | return Mangler.mangle(GlobalDecl(CD, Type)); | |||
5838 | } | |||
5839 | ||||
5840 | if (auto *DD = dyn_cast<CXXDestructorDecl>(D)) { | |||
5841 | auto Type = GD.getDtorType(); | |||
5842 | CXXNameMangler Mangler(*this, Out, DD, Type); | |||
5843 | return Mangler.mangle(GlobalDecl(DD, Type)); | |||
5844 | } | |||
5845 | ||||
5846 | CXXNameMangler Mangler(*this, Out, D); | |||
5847 | Mangler.mangle(GD); | |||
5848 | } | |||
5849 | ||||
5850 | void ItaniumMangleContextImpl::mangleCXXCtorComdat(const CXXConstructorDecl *D, | |||
5851 | raw_ostream &Out) { | |||
5852 | CXXNameMangler Mangler(*this, Out, D, Ctor_Comdat); | |||
5853 | Mangler.mangle(GlobalDecl(D, Ctor_Comdat)); | |||
5854 | } | |||
5855 | ||||
5856 | void ItaniumMangleContextImpl::mangleCXXDtorComdat(const CXXDestructorDecl *D, | |||
5857 | raw_ostream &Out) { | |||
5858 | CXXNameMangler Mangler(*this, Out, D, Dtor_Comdat); | |||
5859 | Mangler.mangle(GlobalDecl(D, Dtor_Comdat)); | |||
5860 | } | |||
5861 | ||||
5862 | void ItaniumMangleContextImpl::mangleThunk(const CXXMethodDecl *MD, | |||
5863 | const ThunkInfo &Thunk, | |||
5864 | raw_ostream &Out) { | |||
5865 | // <special-name> ::= T <call-offset> <base encoding> | |||
5866 | // # base is the nominal target function of thunk | |||
5867 | // <special-name> ::= Tc <call-offset> <call-offset> <base encoding> | |||
5868 | // # base is the nominal target function of thunk | |||
5869 | // # first call-offset is 'this' adjustment | |||
5870 | // # second call-offset is result adjustment | |||
5871 | ||||
5872 | 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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5873, __PRETTY_FUNCTION__)) | |||
5873 | "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~++20210124100612+2afaf072f5c1/clang/lib/AST/ItaniumMangle.cpp" , 5873, __PRETTY_FUNCTION__)); | |||
5874 | CXXNameMangler Mangler(*this, Out); | |||
5875 | Mangler.getStream() << "_ZT"; | |||
5876 | if (!Thunk.Return.isEmpty()) | |||
5877 | Mangler.getStream() << 'c'; | |||
5878 | ||||
5879 | // Mangle the 'this' pointer adjustment. | |||
5880 | Mangler.mangleCallOffset(Thunk.This.NonVirtual, | |||
5881 | Thunk.This.Virtual.Itanium.VCallOffsetOffset); | |||
5882 | ||||
5883 | // Mangle the return pointer adjustment if there is one. | |||
5884 | if (!Thunk.Return.isEmpty()) | |||
5885 | Mangler.mangleCallOffset(Thunk.Return.NonVirtual, | |||
5886 | Thunk.Return.Virtual.Itanium.VBaseOffsetOffset); | |||
5887 | ||||
5888 | Mangler.mangleFunctionEncoding(MD); | |||
5889 | } | |||
5890 | ||||
5891 | void ItaniumMangleContextImpl::mangleCXXDtorThunk( | |||
5892 | const CXXDestructorDecl *DD, CXXDtorType Type, | |||
5893 | const ThisAdjustment &ThisAdjustment, raw_ostream &Out) { | |||
5894 | // <special-name> ::= T <call-offset> <base encoding> | |||
5895 | // # base is the nominal target function of thunk | |||
5896 | CXXNameMangler Mangler(*this, Out, DD, Type); | |||
5897 | Mangler.getStream() << "_ZT"; | |||
5898 | ||||
5899 | // Mangle the 'this' pointer adjustment. | |||
5900 | Mangler.mangleCallOffset(ThisAdjustment.NonVirtual, | |||
5901 | ThisAdjustment.Virtual.Itanium.VCallOffsetOffset); | |||
5902 | ||||
5903 | Mangler.mangleFunctionEncoding(GlobalDecl(DD, Type)); | |||
5904 | } | |||
5905 | ||||
5906 | /// Returns the mangled name for a guard variable for the passed in VarDecl. | |||
5907 | void ItaniumMangleContextImpl::mangleStaticGuardVariable(const VarDecl *D, | |||
5908 | raw_ostream &Out) { | |||
5909 | // <special-name> ::= GV <object name> # Guard variable for one-time | |||
5910 | // # initialization | |||
5911 | CXXNameMangler Mangler(*this, Out); | |||
5912 | // GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to | |||
5913 | // be a bug that is fixed in trunk. | |||
5914 | Mangler.getStream() << "_ZGV"; | |||
5915 | Mangler.mangleName(D); | |||
5916 | } | |||
5917 | ||||
5918 | void ItaniumMangleContextImpl::mangleDynamicInitializer(const VarDecl *MD, | |||
5919 | raw_ostream &Out) { | |||
5920 | // These symbols are internal in the Itanium ABI, so the names don't matter. | |||
5921 | // Clang has traditionally used this symbol and allowed LLVM to adjust it to | |||
5922 | // avoid duplicate symbols. | |||
5923 | Out << "__cxx_global_var_init"; | |||
5924 | } | |||
5925 | ||||
5926 | void ItaniumMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D, | |||
5927 | raw_ostream &Out) { | |||
5928 | // Prefix the mangling of D with __dtor_. | |||
5929 | CXXNameMangler Mangler(*this, Out); | |||
5930 | Mangler.getStream() << "__dtor_"; | |||
5931 | if (shouldMangleDeclName(D)) | |||
5932 | Mangler.mangle(D); | |||
5933 | else | |||
5934 | Mangler.getStream() << D->getName(); | |||
5935 | } | |||
5936 | ||||
5937 | void ItaniumMangleContextImpl::mangleDynamicStermFinalizer(const VarDecl *D, | |||
5938 | raw_ostream &Out) { | |||
5939 | // Clang generates these internal-linkage functions as part of its | |||
5940 | // implementation of the XL ABI. | |||
5941 | CXXNameMangler Mangler(*this, Out); | |||
5942 | Mangler.getStream() << "__finalize_"; | |||
5943 | if (shouldMangleDeclName(D)) | |||