Bug Summary

File:tools/clang/lib/AST/ItaniumMangle.cpp
Warning:line 2888, column 7
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ItaniumMangle.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -mframe-pointer=none -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-10~svn374814/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-10~svn374814/tools/clang/include -I /build/llvm-toolchain-snapshot-10~svn374814/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-10~svn374814/build-llvm/include -I /build/llvm-toolchain-snapshot-10~svn374814/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-10/lib/clang/10.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-10~svn374814/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-10~svn374814=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2019-10-15-035155-28452-1 -x c++ /build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp
1//===--- ItaniumMangle.cpp - Itanium C++ Name Mangling ----------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Implements C++ name mangling according to the Itanium C++ ABI,
10// which is used in GCC 3.2 and newer (and many compilers that are
11// ABI-compatible with GCC):
12//
13// http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
14//
15//===----------------------------------------------------------------------===//
16#include "clang/AST/Mangle.h"
17#include "clang/AST/ASTContext.h"
18#include "clang/AST/Attr.h"
19#include "clang/AST/Decl.h"
20#include "clang/AST/DeclCXX.h"
21#include "clang/AST/DeclObjC.h"
22#include "clang/AST/DeclOpenMP.h"
23#include "clang/AST/DeclTemplate.h"
24#include "clang/AST/Expr.h"
25#include "clang/AST/ExprCXX.h"
26#include "clang/AST/ExprObjC.h"
27#include "clang/AST/TypeLoc.h"
28#include "clang/Basic/ABI.h"
29#include "clang/Basic/SourceManager.h"
30#include "clang/Basic/TargetInfo.h"
31#include "llvm/ADT/StringExtras.h"
32#include "llvm/Support/ErrorHandling.h"
33#include "llvm/Support/raw_ostream.h"
34
35using namespace clang;
36
37namespace {
38
39/// Retrieve the declaration context that should be used when mangling the given
40/// declaration.
41static const DeclContext *getEffectiveDeclContext(const Decl *D) {
42 // The ABI assumes that lambda closure types that occur within
43 // default arguments live in the context of the function. However, due to
44 // the way in which Clang parses and creates function declarations, this is
45 // not the case: the lambda closure type ends up living in the context
46 // where the function itself resides, because the function declaration itself
47 // had not yet been created. Fix the context here.
48 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
49 if (RD->isLambda())
50 if (ParmVarDecl *ContextParam
51 = dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl()))
52 return ContextParam->getDeclContext();
53 }
54
55 // Perform the same check for block literals.
56 if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
57 if (ParmVarDecl *ContextParam
58 = dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl()))
59 return ContextParam->getDeclContext();
60 }
61
62 const DeclContext *DC = D->getDeclContext();
63 if (isa<CapturedDecl>(DC) || isa<OMPDeclareReductionDecl>(DC) ||
64 isa<OMPDeclareMapperDecl>(DC)) {
65 return getEffectiveDeclContext(cast<Decl>(DC));
66 }
67
68 if (const auto *VD = dyn_cast<VarDecl>(D))
69 if (VD->isExternC())
70 return VD->getASTContext().getTranslationUnitDecl();
71
72 if (const auto *FD = dyn_cast<FunctionDecl>(D))
73 if (FD->isExternC())
74 return FD->getASTContext().getTranslationUnitDecl();
75
76 return DC->getRedeclContext();
77}
78
79static const DeclContext *getEffectiveParentContext(const DeclContext *DC) {
80 return getEffectiveDeclContext(cast<Decl>(DC));
81}
82
83static bool isLocalContainerContext(const DeclContext *DC) {
84 return isa<FunctionDecl>(DC) || isa<ObjCMethodDecl>(DC) || isa<BlockDecl>(DC);
85}
86
87static const RecordDecl *GetLocalClassDecl(const Decl *D) {
88 const DeclContext *DC = getEffectiveDeclContext(D);
89 while (!DC->isNamespace() && !DC->isTranslationUnit()) {
90 if (isLocalContainerContext(DC))
91 return dyn_cast<RecordDecl>(D);
92 D = cast<Decl>(DC);
93 DC = getEffectiveDeclContext(D);
94 }
95 return nullptr;
96}
97
98static const FunctionDecl *getStructor(const FunctionDecl *fn) {
99 if (const FunctionTemplateDecl *ftd = fn->getPrimaryTemplate())
100 return ftd->getTemplatedDecl();
101
102 return fn;
103}
104
105static const NamedDecl *getStructor(const NamedDecl *decl) {
106 const FunctionDecl *fn = dyn_cast_or_null<FunctionDecl>(decl);
107 return (fn ? getStructor(fn) : decl);
108}
109
110static bool isLambda(const NamedDecl *ND) {
111 const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(ND);
112 if (!Record)
113 return false;
114
115 return Record->isLambda();
116}
117
118static const unsigned UnknownArity = ~0U;
119
120class ItaniumMangleContextImpl : public ItaniumMangleContext {
121 typedef std::pair<const DeclContext*, IdentifierInfo*> DiscriminatorKeyTy;
122 llvm::DenseMap<DiscriminatorKeyTy, unsigned> Discriminator;
123 llvm::DenseMap<const NamedDecl*, unsigned> Uniquifier;
124
125public:
126 explicit ItaniumMangleContextImpl(ASTContext &Context,
127 DiagnosticsEngine &Diags)
128 : ItaniumMangleContext(Context, Diags) {}
129
130 /// @name Mangler Entry Points
131 /// @{
132
133 bool shouldMangleCXXName(const NamedDecl *D) override;
134 bool shouldMangleStringLiteral(const StringLiteral *) override {
135 return false;
136 }
137 void mangleCXXName(const NamedDecl *D, raw_ostream &) override;
138 void mangleThunk(const CXXMethodDecl *MD, const ThunkInfo &Thunk,
139 raw_ostream &) override;
140 void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type,
141 const ThisAdjustment &ThisAdjustment,
142 raw_ostream &) override;
143 void mangleReferenceTemporary(const VarDecl *D, unsigned ManglingNumber,
144 raw_ostream &) override;
145 void mangleCXXVTable(const CXXRecordDecl *RD, raw_ostream &) override;
146 void mangleCXXVTT(const CXXRecordDecl *RD, raw_ostream &) override;
147 void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset,
148 const CXXRecordDecl *Type, raw_ostream &) override;
149 void mangleCXXRTTI(QualType T, raw_ostream &) override;
150 void mangleCXXRTTIName(QualType T, raw_ostream &) override;
151 void mangleTypeName(QualType T, raw_ostream &) override;
152 void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
153 raw_ostream &) override;
154 void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type,
155 raw_ostream &) override;
156
157 void mangleCXXCtorComdat(const CXXConstructorDecl *D, raw_ostream &) override;
158 void mangleCXXDtorComdat(const CXXDestructorDecl *D, raw_ostream &) override;
159 void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &) override;
160 void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override;
161 void mangleDynamicAtExitDestructor(const VarDecl *D,
162 raw_ostream &Out) override;
163 void 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.
210class 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-10~svn374814/tools/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-10~svn374814/tools/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-10~svn374814/tools/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-10~svn374814/tools/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-10~svn374814/tools/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-10~svn374814/tools/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
384public:
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-10~svn374814/tools/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-10~svn374814/tools/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(const NamedDecl *D);
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(const FunctionDecl *FD);
425 void mangleSeqID(unsigned SeqID);
426 void mangleName(const NamedDecl *ND);
427 void mangleType(QualType T);
428 void mangleNameOrStandardSubstitution(const NamedDecl *ND);
429 void mangleLambdaSig(const CXXRecordDecl *Lambda);
430
431private:
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(const NamedDecl *ND,
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(const NamedDecl *ND,
471 const AbiTagList *AdditionalAbiTags) {
472 mangleUnqualifiedName(ND, ND->getDeclName(), UnknownArity,
473 AdditionalAbiTags);
474 }
475 void mangleUnqualifiedName(const NamedDecl *ND, DeclarationName Name,
476 unsigned KnownArity,
477 const AbiTagList *AdditionalAbiTags);
478 void mangleUnscopedName(const NamedDecl *ND,
479 const AbiTagList *AdditionalAbiTags);
480 void mangleUnscopedTemplateName(const TemplateDecl *ND,
481 const AbiTagList *AdditionalAbiTags);
482 void mangleUnscopedTemplateName(TemplateName,
483 const AbiTagList *AdditionalAbiTags);
484 void mangleSourceName(const IdentifierInfo *II);
485 void mangleRegCallName(const IdentifierInfo *II);
486 void mangleSourceNameWithAbiTags(
487 const NamedDecl *ND, const AbiTagList *AdditionalAbiTags = nullptr);
488 void mangleLocalName(const Decl *D,
489 const AbiTagList *AdditionalAbiTags);
490 void mangleBlockForPrefix(const BlockDecl *Block);
491 void mangleUnqualifiedBlock(const BlockDecl *Block);
492 void mangleTemplateParamDecl(const NamedDecl *Decl);
493 void mangleLambda(const CXXRecordDecl *Lambda);
494 void mangleNestedName(const NamedDecl *ND, const DeclContext *DC,
495 const AbiTagList *AdditionalAbiTags,
496 bool NoFunction=false);
497 void mangleNestedName(const TemplateDecl *TD,
498 const TemplateArgument *TemplateArgs,
499 unsigned NumTemplateArgs);
500 void manglePrefix(NestedNameSpecifier *qualifier);
501 void manglePrefix(const DeclContext *DC, bool NoFunction=false);
502 void manglePrefix(QualType type);
503 void mangleTemplatePrefix(const TemplateDecl *ND, bool NoFunction=false);
504 void mangleTemplatePrefix(TemplateName Template);
505 bool mangleUnresolvedTypeOrSimpleId(QualType DestroyedType,
506 StringRef Prefix = "");
507 void mangleOperatorName(DeclarationName Name, unsigned Arity);
508 void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity);
509 void mangleVendorQualifier(StringRef qualifier);
510 void mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST = nullptr);
511 void mangleRefQualifier(RefQualifierKind RefQualifier);
512
513 void mangleObjCMethodName(const ObjCMethodDecl *MD);
514
515 // Declare manglers for every type class.
516#define ABSTRACT_TYPE(CLASS, PARENT)
517#define NON_CANONICAL_TYPE(CLASS, PARENT)
518#define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T);
519#include "clang/AST/TypeNodes.inc"
520
521 void mangleType(const TagType*);
522 void mangleType(TemplateName);
523 static StringRef getCallingConvQualifierName(CallingConv CC);
524 void mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo info);
525 void mangleExtFunctionInfo(const FunctionType *T);
526 void mangleBareFunctionType(const FunctionProtoType *T, bool MangleReturnType,
527 const FunctionDecl *FD = nullptr);
528 void mangleNeonVectorType(const VectorType *T);
529 void mangleNeonVectorType(const DependentVectorType *T);
530 void mangleAArch64NeonVectorType(const VectorType *T);
531 void mangleAArch64NeonVectorType(const DependentVectorType *T);
532
533 void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value);
534 void mangleMemberExprBase(const Expr *base, bool isArrow);
535 void mangleMemberExpr(const Expr *base, bool isArrow,
536 NestedNameSpecifier *qualifier,
537 NamedDecl *firstQualifierLookup,
538 DeclarationName name,
539 const TemplateArgumentLoc *TemplateArgs,
540 unsigned NumTemplateArgs,
541 unsigned knownArity);
542 void mangleCastExpression(const Expr *E, StringRef CastEncoding);
543 void mangleInitListElements(const InitListExpr *InitList);
544 void mangleDeclRefExpr(const NamedDecl *D);
545 void mangleExpression(const Expr *E, unsigned Arity = UnknownArity);
546 void mangleCXXCtorType(CXXCtorType T, const CXXRecordDecl *InheritedFrom);
547 void mangleCXXDtorType(CXXDtorType T);
548
549 void mangleTemplateArgs(const TemplateArgumentLoc *TemplateArgs,
550 unsigned NumTemplateArgs);
551 void mangleTemplateArgs(const TemplateArgument *TemplateArgs,
552 unsigned NumTemplateArgs);
553 void mangleTemplateArgs(const TemplateArgumentList &AL);
554 void mangleTemplateArg(TemplateArgument A);
555
556 void mangleTemplateParameter(unsigned Depth, unsigned Index);
557
558 void mangleFunctionParam(const ParmVarDecl *parm);
559
560 void writeAbiTags(const NamedDecl *ND,
561 const AbiTagList *AdditionalAbiTags);
562
563 // Returns sorted unique list of ABI tags.
564 AbiTagList makeFunctionReturnTypeTags(const FunctionDecl *FD);
565 // Returns sorted unique list of ABI tags.
566 AbiTagList makeVariableTypeTags(const VarDecl *VD);
567};
568
569}
570
571bool ItaniumMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) {
572 const FunctionDecl *FD = dyn_cast<FunctionDecl>(D);
573 if (FD) {
574 LanguageLinkage L = FD->getLanguageLinkage();
575 // Overloadable functions need mangling.
576 if (FD->hasAttr<OverloadableAttr>())
577 return true;
578
579 // "main" is not mangled.
580 if (FD->isMain())
581 return false;
582
583 // The Windows ABI expects that we would never mangle "typical"
584 // user-defined entry points regardless of visibility or freestanding-ness.
585 //
586 // N.B. This is distinct from asking about "main". "main" has a lot of
587 // special rules associated with it in the standard while these
588 // user-defined entry points are outside of the purview of the standard.
589 // For example, there can be only one definition for "main" in a standards
590 // compliant program; however nothing forbids the existence of wmain and
591 // WinMain in the same translation unit.
592 if (FD->isMSVCRTEntryPoint())
593 return false;
594
595 // C++ functions and those whose names are not a simple identifier need
596 // mangling.
597 if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage)
598 return true;
599
600 // C functions are not mangled.
601 if (L == CLanguageLinkage)
602 return false;
603 }
604
605 // Otherwise, no mangling is done outside C++ mode.
606 if (!getASTContext().getLangOpts().CPlusPlus)
607 return false;
608
609 const VarDecl *VD = dyn_cast<VarDecl>(D);
610 if (VD && !isa<DecompositionDecl>(D)) {
611 // C variables are not mangled.
612 if (VD->isExternC())
613 return false;
614
615 // Variables at global scope with non-internal linkage are not mangled
616 const DeclContext *DC = getEffectiveDeclContext(D);
617 // Check for extern variable declared locally.
618 if (DC->isFunctionOrMethod() && D->hasLinkage())
619 while (!DC->isNamespace() && !DC->isTranslationUnit())
620 DC = getEffectiveParentContext(DC);
621 if (DC->isTranslationUnit() && D->getFormalLinkage() != InternalLinkage &&
622 !CXXNameMangler::shouldHaveAbiTags(*this, VD) &&
623 !isa<VarTemplateSpecializationDecl>(D))
624 return false;
625 }
626
627 return true;
628}
629
630void CXXNameMangler::writeAbiTags(const NamedDecl *ND,
631 const AbiTagList *AdditionalAbiTags) {
632 assert(AbiTags && "require AbiTagState")((AbiTags && "require AbiTagState") ? static_cast<
void> (0) : __assert_fail ("AbiTags && \"require AbiTagState\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 632, __PRETTY_FUNCTION__))
;
633 AbiTags->write(Out, ND, DisableDerivedAbiTags ? nullptr : AdditionalAbiTags);
634}
635
636void CXXNameMangler::mangleSourceNameWithAbiTags(
637 const NamedDecl *ND, const AbiTagList *AdditionalAbiTags) {
638 mangleSourceName(ND->getIdentifier());
639 writeAbiTags(ND, AdditionalAbiTags);
640}
641
642void CXXNameMangler::mangle(const NamedDecl *D) {
643 // <mangled-name> ::= _Z <encoding>
644 // ::= <data name>
645 // ::= <special-name>
646 Out << "_Z";
647 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
648 mangleFunctionEncoding(FD);
649 else if (const VarDecl *VD = dyn_cast<VarDecl>(D))
650 mangleName(VD);
651 else if (const IndirectFieldDecl *IFD = dyn_cast<IndirectFieldDecl>(D))
652 mangleName(IFD->getAnonField());
653 else
654 mangleName(cast<FieldDecl>(D));
655}
656
657void CXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD) {
658 // <encoding> ::= <function name> <bare-function-type>
659
660 // Don't mangle in the type if this isn't a decl we should typically mangle.
661 if (!Context.shouldMangleDeclName(FD)) {
662 mangleName(FD);
663 return;
664 }
665
666 AbiTagList ReturnTypeAbiTags = makeFunctionReturnTypeTags(FD);
667 if (ReturnTypeAbiTags.empty()) {
668 // There are no tags for return type, the simplest case.
669 mangleName(FD);
670 mangleFunctionEncodingBareType(FD);
671 return;
672 }
673
674 // Mangle function name and encoding to temporary buffer.
675 // We have to output name and encoding to the same mangler to get the same
676 // substitution as it will be in final mangling.
677 SmallString<256> FunctionEncodingBuf;
678 llvm::raw_svector_ostream FunctionEncodingStream(FunctionEncodingBuf);
679 CXXNameMangler FunctionEncodingMangler(*this, FunctionEncodingStream);
680 // Output name of the function.
681 FunctionEncodingMangler.disableDerivedAbiTags();
682 FunctionEncodingMangler.mangleNameWithAbiTags(FD, nullptr);
683
684 // Remember length of the function name in the buffer.
685 size_t EncodingPositionStart = FunctionEncodingStream.str().size();
686 FunctionEncodingMangler.mangleFunctionEncodingBareType(FD);
687
688 // Get tags from return type that are not present in function name or
689 // encoding.
690 const AbiTagList &UsedAbiTags =
691 FunctionEncodingMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags();
692 AbiTagList AdditionalAbiTags(ReturnTypeAbiTags.size());
693 AdditionalAbiTags.erase(
694 std::set_difference(ReturnTypeAbiTags.begin(), ReturnTypeAbiTags.end(),
695 UsedAbiTags.begin(), UsedAbiTags.end(),
696 AdditionalAbiTags.begin()),
697 AdditionalAbiTags.end());
698
699 // Output name with implicit tags and function encoding from temporary buffer.
700 mangleNameWithAbiTags(FD, &AdditionalAbiTags);
701 Out << FunctionEncodingStream.str().substr(EncodingPositionStart);
702
703 // Function encoding could create new substitutions so we have to add
704 // temp mangled substitutions to main mangler.
705 extendSubstitutions(&FunctionEncodingMangler);
706}
707
708void CXXNameMangler::mangleFunctionEncodingBareType(const FunctionDecl *FD) {
709 if (FD->hasAttr<EnableIfAttr>()) {
710 FunctionTypeDepthState Saved = FunctionTypeDepth.push();
711 Out << "Ua9enable_ifI";
712 for (AttrVec::const_iterator I = FD->getAttrs().begin(),
713 E = FD->getAttrs().end();
714 I != E; ++I) {
715 EnableIfAttr *EIA = dyn_cast<EnableIfAttr>(*I);
716 if (!EIA)
717 continue;
718 Out << 'X';
719 mangleExpression(EIA->getCond());
720 Out << 'E';
721 }
722 Out << 'E';
723 FunctionTypeDepth.pop(Saved);
724 }
725
726 // When mangling an inheriting constructor, the bare function type used is
727 // that of the inherited constructor.
728 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD))
729 if (auto Inherited = CD->getInheritedConstructor())
730 FD = Inherited.getConstructor();
731
732 // Whether the mangling of a function type includes the return type depends on
733 // the context and the nature of the function. The rules for deciding whether
734 // the return type is included are:
735 //
736 // 1. Template functions (names or types) have return types encoded, with
737 // the exceptions listed below.
738 // 2. Function types not appearing as part of a function name mangling,
739 // e.g. parameters, pointer types, etc., have return type encoded, with the
740 // exceptions listed below.
741 // 3. Non-template function names do not have return types encoded.
742 //
743 // The exceptions mentioned in (1) and (2) above, for which the return type is
744 // never included, are
745 // 1. Constructors.
746 // 2. Destructors.
747 // 3. Conversion operator functions, e.g. operator int.
748 bool MangleReturnType = false;
749 if (FunctionTemplateDecl *PrimaryTemplate = FD->getPrimaryTemplate()) {
750 if (!(isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD) ||
751 isa<CXXConversionDecl>(FD)))
752 MangleReturnType = true;
753
754 // Mangle the type of the primary template.
755 FD = PrimaryTemplate->getTemplatedDecl();
756 }
757
758 mangleBareFunctionType(FD->getType()->castAs<FunctionProtoType>(),
759 MangleReturnType, FD);
760}
761
762static const DeclContext *IgnoreLinkageSpecDecls(const DeclContext *DC) {
763 while (isa<LinkageSpecDecl>(DC)) {
764 DC = getEffectiveParentContext(DC);
765 }
766
767 return DC;
768}
769
770/// Return whether a given namespace is the 'std' namespace.
771static bool isStd(const NamespaceDecl *NS) {
772 if (!IgnoreLinkageSpecDecls(getEffectiveParentContext(NS))
773 ->isTranslationUnit())
774 return false;
775
776 const IdentifierInfo *II = NS->getOriginalNamespace()->getIdentifier();
777 return II && II->isStr("std");
778}
779
780// isStdNamespace - Return whether a given decl context is a toplevel 'std'
781// namespace.
782static bool isStdNamespace(const DeclContext *DC) {
783 if (!DC->isNamespace())
784 return false;
785
786 return isStd(cast<NamespaceDecl>(DC));
787}
788
789static const TemplateDecl *
790isTemplate(const NamedDecl *ND, const TemplateArgumentList *&TemplateArgs) {
791 // Check if we have a function template.
792 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
793 if (const TemplateDecl *TD = FD->getPrimaryTemplate()) {
794 TemplateArgs = FD->getTemplateSpecializationArgs();
795 return TD;
796 }
797 }
798
799 // Check if we have a class template.
800 if (const ClassTemplateSpecializationDecl *Spec =
801 dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
802 TemplateArgs = &Spec->getTemplateArgs();
803 return Spec->getSpecializedTemplate();
804 }
805
806 // Check if we have a variable template.
807 if (const VarTemplateSpecializationDecl *Spec =
808 dyn_cast<VarTemplateSpecializationDecl>(ND)) {
809 TemplateArgs = &Spec->getTemplateArgs();
810 return Spec->getSpecializedTemplate();
811 }
812
813 return nullptr;
814}
815
816void CXXNameMangler::mangleName(const NamedDecl *ND) {
817 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
818 // Variables should have implicit tags from its type.
819 AbiTagList VariableTypeAbiTags = makeVariableTypeTags(VD);
820 if (VariableTypeAbiTags.empty()) {
821 // Simple case no variable type tags.
822 mangleNameWithAbiTags(VD, nullptr);
823 return;
824 }
825
826 // Mangle variable name to null stream to collect tags.
827 llvm::raw_null_ostream NullOutStream;
828 CXXNameMangler VariableNameMangler(*this, NullOutStream);
829 VariableNameMangler.disableDerivedAbiTags();
830 VariableNameMangler.mangleNameWithAbiTags(VD, nullptr);
831
832 // Get tags from variable type that are not present in its name.
833 const AbiTagList &UsedAbiTags =
834 VariableNameMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags();
835 AbiTagList AdditionalAbiTags(VariableTypeAbiTags.size());
836 AdditionalAbiTags.erase(
837 std::set_difference(VariableTypeAbiTags.begin(),
838 VariableTypeAbiTags.end(), UsedAbiTags.begin(),
839 UsedAbiTags.end(), AdditionalAbiTags.begin()),
840 AdditionalAbiTags.end());
841
842 // Output name with implicit tags.
843 mangleNameWithAbiTags(VD, &AdditionalAbiTags);
844 } else {
845 mangleNameWithAbiTags(ND, nullptr);
846 }
847}
848
849void CXXNameMangler::mangleNameWithAbiTags(const NamedDecl *ND,
850 const AbiTagList *AdditionalAbiTags) {
851 // <name> ::= [<module-name>] <nested-name>
852 // ::= [<module-name>] <unscoped-name>
853 // ::= [<module-name>] <unscoped-template-name> <template-args>
854 // ::= <local-name>
855 //
856 const DeclContext *DC = getEffectiveDeclContext(ND);
857
858 // If this is an extern variable declared locally, the relevant DeclContext
859 // is that of the containing namespace, or the translation unit.
860 // FIXME: This is a hack; extern variables declared locally should have
861 // a proper semantic declaration context!
862 if (isLocalContainerContext(DC) && ND->hasLinkage() && !isLambda(ND))
863 while (!DC->isNamespace() && !DC->isTranslationUnit())
864 DC = getEffectiveParentContext(DC);
865 else if (GetLocalClassDecl(ND)) {
866 mangleLocalName(ND, AdditionalAbiTags);
867 return;
868 }
869
870 DC = IgnoreLinkageSpecDecls(DC);
871
872 if (isLocalContainerContext(DC)) {
873 mangleLocalName(ND, AdditionalAbiTags);
874 return;
875 }
876
877 // Do not mangle the owning module for an external linkage declaration.
878 // This enables backwards-compatibility with non-modular code, and is
879 // a valid choice since conflicts are not permitted by C++ Modules TS
880 // [basic.def.odr]/6.2.
881 if (!ND->hasExternalFormalLinkage())
882 if (Module *M = ND->getOwningModuleForLinkage())
883 mangleModuleName(M);
884
885 if (DC->isTranslationUnit() || isStdNamespace(DC)) {
886 // Check if we have a template.
887 const TemplateArgumentList *TemplateArgs = nullptr;
888 if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
889 mangleUnscopedTemplateName(TD, AdditionalAbiTags);
890 mangleTemplateArgs(*TemplateArgs);
891 return;
892 }
893
894 mangleUnscopedName(ND, AdditionalAbiTags);
895 return;
896 }
897
898 mangleNestedName(ND, DC, AdditionalAbiTags);
899}
900
901void CXXNameMangler::mangleModuleName(const Module *M) {
902 // Implement the C++ Modules TS name mangling proposal; see
903 // https://gcc.gnu.org/wiki/cxx-modules?action=AttachFile
904 //
905 // <module-name> ::= W <unscoped-name>+ E
906 // ::= W <module-subst> <unscoped-name>* E
907 Out << 'W';
908 mangleModuleNamePrefix(M->Name);
909 Out << 'E';
910}
911
912void CXXNameMangler::mangleModuleNamePrefix(StringRef Name) {
913 // <module-subst> ::= _ <seq-id> # 0 < seq-id < 10
914 // ::= W <seq-id - 10> _ # otherwise
915 auto It = ModuleSubstitutions.find(Name);
916 if (It != ModuleSubstitutions.end()) {
917 if (It->second < 10)
918 Out << '_' << static_cast<char>('0' + It->second);
919 else
920 Out << 'W' << (It->second - 10) << '_';
921 return;
922 }
923
924 // FIXME: Preserve hierarchy in module names rather than flattening
925 // them to strings; use Module*s as substitution keys.
926 auto Parts = Name.rsplit('.');
927 if (Parts.second.empty())
928 Parts.second = Parts.first;
929 else
930 mangleModuleNamePrefix(Parts.first);
931
932 Out << Parts.second.size() << Parts.second;
933 ModuleSubstitutions.insert({Name, ModuleSubstitutions.size()});
934}
935
936void CXXNameMangler::mangleTemplateName(const TemplateDecl *TD,
937 const TemplateArgument *TemplateArgs,
938 unsigned NumTemplateArgs) {
939 const DeclContext *DC = IgnoreLinkageSpecDecls(getEffectiveDeclContext(TD));
940
941 if (DC->isTranslationUnit() || isStdNamespace(DC)) {
942 mangleUnscopedTemplateName(TD, nullptr);
943 mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
944 } else {
945 mangleNestedName(TD, TemplateArgs, NumTemplateArgs);
946 }
947}
948
949void CXXNameMangler::mangleUnscopedName(const NamedDecl *ND,
950 const AbiTagList *AdditionalAbiTags) {
951 // <unscoped-name> ::= <unqualified-name>
952 // ::= St <unqualified-name> # ::std::
953
954 if (isStdNamespace(IgnoreLinkageSpecDecls(getEffectiveDeclContext(ND))))
955 Out << "St";
956
957 mangleUnqualifiedName(ND, AdditionalAbiTags);
958}
959
960void CXXNameMangler::mangleUnscopedTemplateName(
961 const TemplateDecl *ND, const AbiTagList *AdditionalAbiTags) {
962 // <unscoped-template-name> ::= <unscoped-name>
963 // ::= <substitution>
964 if (mangleSubstitution(ND))
965 return;
966
967 // <template-template-param> ::= <template-param>
968 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) {
969 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 970, __PRETTY_FUNCTION__))
970 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 970, __PRETTY_FUNCTION__))
;
971 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
972 } else if (isa<BuiltinTemplateDecl>(ND)) {
973 mangleUnscopedName(ND, AdditionalAbiTags);
974 } else {
975 mangleUnscopedName(ND->getTemplatedDecl(), AdditionalAbiTags);
976 }
977
978 addSubstitution(ND);
979}
980
981void CXXNameMangler::mangleUnscopedTemplateName(
982 TemplateName Template, const AbiTagList *AdditionalAbiTags) {
983 // <unscoped-template-name> ::= <unscoped-name>
984 // ::= <substitution>
985 if (TemplateDecl *TD = Template.getAsTemplateDecl())
986 return mangleUnscopedTemplateName(TD, AdditionalAbiTags);
987
988 if (mangleSubstitution(Template))
989 return;
990
991 assert(!AdditionalAbiTags &&((!AdditionalAbiTags && "dependent template name cannot have abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"dependent template name cannot have abi tags\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 992, __PRETTY_FUNCTION__))
992 "dependent template name cannot have abi tags")((!AdditionalAbiTags && "dependent template name cannot have abi tags"
) ? static_cast<void> (0) : __assert_fail ("!AdditionalAbiTags && \"dependent template name cannot have abi tags\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 992, __PRETTY_FUNCTION__))
;
993
994 DependentTemplateName *Dependent = Template.getAsDependentTemplateName();
995 assert(Dependent && "Not a dependent template name?")((Dependent && "Not a dependent template name?") ? static_cast
<void> (0) : __assert_fail ("Dependent && \"Not a dependent template name?\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 995, __PRETTY_FUNCTION__))
;
996 if (const IdentifierInfo *Id = Dependent->getIdentifier())
997 mangleSourceName(Id);
998 else
999 mangleOperatorName(Dependent->getOperator(), UnknownArity);
1000
1001 addSubstitution(Template);
1002}
1003
1004void CXXNameMangler::mangleFloat(const llvm::APFloat &f) {
1005 // ABI:
1006 // Floating-point literals are encoded using a fixed-length
1007 // lowercase hexadecimal string corresponding to the internal
1008 // representation (IEEE on Itanium), high-order bytes first,
1009 // without leading zeroes. For example: "Lf bf800000 E" is -1.0f
1010 // on Itanium.
1011 // The 'without leading zeroes' thing seems to be an editorial
1012 // mistake; see the discussion on cxx-abi-dev beginning on
1013 // 2012-01-16.
1014
1015 // Our requirements here are just barely weird enough to justify
1016 // using a custom algorithm instead of post-processing APInt::toString().
1017
1018 llvm::APInt valueBits = f.bitcastToAPInt();
1019 unsigned numCharacters = (valueBits.getBitWidth() + 3) / 4;
1020 assert(numCharacters != 0)((numCharacters != 0) ? static_cast<void> (0) : __assert_fail
("numCharacters != 0", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1020, __PRETTY_FUNCTION__))
;
1021
1022 // Allocate a buffer of the right number of characters.
1023 SmallVector<char, 20> buffer(numCharacters);
1024
1025 // Fill the buffer left-to-right.
1026 for (unsigned stringIndex = 0; stringIndex != numCharacters; ++stringIndex) {
1027 // The bit-index of the next hex digit.
1028 unsigned digitBitIndex = 4 * (numCharacters - stringIndex - 1);
1029
1030 // Project out 4 bits starting at 'digitIndex'.
1031 uint64_t hexDigit = valueBits.getRawData()[digitBitIndex / 64];
1032 hexDigit >>= (digitBitIndex % 64);
1033 hexDigit &= 0xF;
1034
1035 // Map that over to a lowercase hex digit.
1036 static const char charForHex[16] = {
1037 '0', '1', '2', '3', '4', '5', '6', '7',
1038 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
1039 };
1040 buffer[stringIndex] = charForHex[hexDigit];
1041 }
1042
1043 Out.write(buffer.data(), numCharacters);
1044}
1045
1046void CXXNameMangler::mangleNumber(const llvm::APSInt &Value) {
1047 if (Value.isSigned() && Value.isNegative()) {
1048 Out << 'n';
1049 Value.abs().print(Out, /*signed*/ false);
1050 } else {
1051 Value.print(Out, /*signed*/ false);
1052 }
1053}
1054
1055void CXXNameMangler::mangleNumber(int64_t Number) {
1056 // <number> ::= [n] <non-negative decimal integer>
1057 if (Number < 0) {
1058 Out << 'n';
1059 Number = -Number;
1060 }
1061
1062 Out << Number;
1063}
1064
1065void CXXNameMangler::mangleCallOffset(int64_t NonVirtual, int64_t Virtual) {
1066 // <call-offset> ::= h <nv-offset> _
1067 // ::= v <v-offset> _
1068 // <nv-offset> ::= <offset number> # non-virtual base override
1069 // <v-offset> ::= <offset number> _ <virtual offset number>
1070 // # virtual base override, with vcall offset
1071 if (!Virtual) {
1072 Out << 'h';
1073 mangleNumber(NonVirtual);
1074 Out << '_';
1075 return;
1076 }
1077
1078 Out << 'v';
1079 mangleNumber(NonVirtual);
1080 Out << '_';
1081 mangleNumber(Virtual);
1082 Out << '_';
1083}
1084
1085void CXXNameMangler::manglePrefix(QualType type) {
1086 if (const auto *TST = type->getAs<TemplateSpecializationType>()) {
1087 if (!mangleSubstitution(QualType(TST, 0))) {
1088 mangleTemplatePrefix(TST->getTemplateName());
1089
1090 // FIXME: GCC does not appear to mangle the template arguments when
1091 // the template in question is a dependent template name. Should we
1092 // emulate that badness?
1093 mangleTemplateArgs(TST->getArgs(), TST->getNumArgs());
1094 addSubstitution(QualType(TST, 0));
1095 }
1096 } else if (const auto *DTST =
1097 type->getAs<DependentTemplateSpecializationType>()) {
1098 if (!mangleSubstitution(QualType(DTST, 0))) {
1099 TemplateName Template = getASTContext().getDependentTemplateName(
1100 DTST->getQualifier(), DTST->getIdentifier());
1101 mangleTemplatePrefix(Template);
1102
1103 // FIXME: GCC does not appear to mangle the template arguments when
1104 // the template in question is a dependent template name. Should we
1105 // emulate that badness?
1106 mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs());
1107 addSubstitution(QualType(DTST, 0));
1108 }
1109 } else {
1110 // We use the QualType mangle type variant here because it handles
1111 // substitutions.
1112 mangleType(type);
1113 }
1114}
1115
1116/// Mangle everything prior to the base-unresolved-name in an unresolved-name.
1117///
1118/// \param recursive - true if this is being called recursively,
1119/// i.e. if there is more prefix "to the right".
1120void CXXNameMangler::mangleUnresolvedPrefix(NestedNameSpecifier *qualifier,
1121 bool recursive) {
1122
1123 // x, ::x
1124 // <unresolved-name> ::= [gs] <base-unresolved-name>
1125
1126 // T::x / decltype(p)::x
1127 // <unresolved-name> ::= sr <unresolved-type> <base-unresolved-name>
1128
1129 // T::N::x /decltype(p)::N::x
1130 // <unresolved-name> ::= srN <unresolved-type> <unresolved-qualifier-level>+ E
1131 // <base-unresolved-name>
1132
1133 // A::x, N::y, A<T>::z; "gs" means leading "::"
1134 // <unresolved-name> ::= [gs] sr <unresolved-qualifier-level>+ E
1135 // <base-unresolved-name>
1136
1137 switch (qualifier->getKind()) {
1138 case NestedNameSpecifier::Global:
1139 Out << "gs";
1140
1141 // We want an 'sr' unless this is the entire NNS.
1142 if (recursive)
1143 Out << "sr";
1144
1145 // We never want an 'E' here.
1146 return;
1147
1148 case NestedNameSpecifier::Super:
1149 llvm_unreachable("Can't mangle __super specifier")::llvm::llvm_unreachable_internal("Can't mangle __super specifier"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1149)
;
1150
1151 case NestedNameSpecifier::Namespace:
1152 if (qualifier->getPrefix())
1153 mangleUnresolvedPrefix(qualifier->getPrefix(),
1154 /*recursive*/ true);
1155 else
1156 Out << "sr";
1157 mangleSourceNameWithAbiTags(qualifier->getAsNamespace());
1158 break;
1159 case NestedNameSpecifier::NamespaceAlias:
1160 if (qualifier->getPrefix())
1161 mangleUnresolvedPrefix(qualifier->getPrefix(),
1162 /*recursive*/ true);
1163 else
1164 Out << "sr";
1165 mangleSourceNameWithAbiTags(qualifier->getAsNamespaceAlias());
1166 break;
1167
1168 case NestedNameSpecifier::TypeSpec:
1169 case NestedNameSpecifier::TypeSpecWithTemplate: {
1170 const Type *type = qualifier->getAsType();
1171
1172 // We only want to use an unresolved-type encoding if this is one of:
1173 // - a decltype
1174 // - a template type parameter
1175 // - a template template parameter with arguments
1176 // In all of these cases, we should have no prefix.
1177 if (qualifier->getPrefix()) {
1178 mangleUnresolvedPrefix(qualifier->getPrefix(),
1179 /*recursive*/ true);
1180 } else {
1181 // Otherwise, all the cases want this.
1182 Out << "sr";
1183 }
1184
1185 if (mangleUnresolvedTypeOrSimpleId(QualType(type, 0), recursive ? "N" : ""))
1186 return;
1187
1188 break;
1189 }
1190
1191 case NestedNameSpecifier::Identifier:
1192 // Member expressions can have these without prefixes.
1193 if (qualifier->getPrefix())
1194 mangleUnresolvedPrefix(qualifier->getPrefix(),
1195 /*recursive*/ true);
1196 else
1197 Out << "sr";
1198
1199 mangleSourceName(qualifier->getAsIdentifier());
1200 // An Identifier has no type information, so we can't emit abi tags for it.
1201 break;
1202 }
1203
1204 // If this was the innermost part of the NNS, and we fell out to
1205 // here, append an 'E'.
1206 if (!recursive)
1207 Out << 'E';
1208}
1209
1210/// Mangle an unresolved-name, which is generally used for names which
1211/// weren't resolved to specific entities.
1212void CXXNameMangler::mangleUnresolvedName(
1213 NestedNameSpecifier *qualifier, DeclarationName name,
1214 const TemplateArgumentLoc *TemplateArgs, unsigned NumTemplateArgs,
1215 unsigned knownArity) {
1216 if (qualifier) mangleUnresolvedPrefix(qualifier);
1217 switch (name.getNameKind()) {
1218 // <base-unresolved-name> ::= <simple-id>
1219 case DeclarationName::Identifier:
1220 mangleSourceName(name.getAsIdentifierInfo());
1221 break;
1222 // <base-unresolved-name> ::= dn <destructor-name>
1223 case DeclarationName::CXXDestructorName:
1224 Out << "dn";
1225 mangleUnresolvedTypeOrSimpleId(name.getCXXNameType());
1226 break;
1227 // <base-unresolved-name> ::= on <operator-name>
1228 case DeclarationName::CXXConversionFunctionName:
1229 case DeclarationName::CXXLiteralOperatorName:
1230 case DeclarationName::CXXOperatorName:
1231 Out << "on";
1232 mangleOperatorName(name, knownArity);
1233 break;
1234 case DeclarationName::CXXConstructorName:
1235 llvm_unreachable("Can't mangle a constructor name!")::llvm::llvm_unreachable_internal("Can't mangle a constructor name!"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1235)
;
1236 case DeclarationName::CXXUsingDirective:
1237 llvm_unreachable("Can't mangle a using directive name!")::llvm::llvm_unreachable_internal("Can't mangle a using directive name!"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1237)
;
1238 case DeclarationName::CXXDeductionGuideName:
1239 llvm_unreachable("Can't mangle a deduction guide name!")::llvm::llvm_unreachable_internal("Can't mangle a deduction guide name!"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1239)
;
1240 case DeclarationName::ObjCMultiArgSelector:
1241 case DeclarationName::ObjCOneArgSelector:
1242 case DeclarationName::ObjCZeroArgSelector:
1243 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1243)
;
1244 }
1245
1246 // The <simple-id> and on <operator-name> productions end in an optional
1247 // <template-args>.
1248 if (TemplateArgs)
1249 mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
1250}
1251
1252void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND,
1253 DeclarationName Name,
1254 unsigned KnownArity,
1255 const AbiTagList *AdditionalAbiTags) {
1256 unsigned Arity = KnownArity;
1257 // <unqualified-name> ::= <operator-name>
1258 // ::= <ctor-dtor-name>
1259 // ::= <source-name>
1260 switch (Name.getNameKind()) {
1261 case DeclarationName::Identifier: {
1262 const IdentifierInfo *II = Name.getAsIdentifierInfo();
1263
1264 // We mangle decomposition declarations as the names of their bindings.
1265 if (auto *DD = dyn_cast<DecompositionDecl>(ND)) {
1266 // FIXME: Non-standard mangling for decomposition declarations:
1267 //
1268 // <unqualified-name> ::= DC <source-name>* E
1269 //
1270 // These can never be referenced across translation units, so we do
1271 // not need a cross-vendor mangling for anything other than demanglers.
1272 // Proposed on cxx-abi-dev on 2016-08-12
1273 Out << "DC";
1274 for (auto *BD : DD->bindings())
1275 mangleSourceName(BD->getDeclName().getAsIdentifierInfo());
1276 Out << 'E';
1277 writeAbiTags(ND, AdditionalAbiTags);
1278 break;
1279 }
1280
1281 if (II) {
1282 // Match GCC's naming convention for internal linkage symbols, for
1283 // symbols that are not actually visible outside of this TU. GCC
1284 // distinguishes between internal and external linkage symbols in
1285 // its mangling, to support cases like this that were valid C++ prior
1286 // to DR426:
1287 //
1288 // void test() { extern void foo(); }
1289 // static void foo();
1290 //
1291 // Don't bother with the L marker for names in anonymous namespaces; the
1292 // 12_GLOBAL__N_1 mangling is quite sufficient there, and this better
1293 // matches GCC anyway, because GCC does not treat anonymous namespaces as
1294 // implying internal linkage.
1295 if (ND && ND->getFormalLinkage() == InternalLinkage &&
1296 !ND->isExternallyVisible() &&
1297 getEffectiveDeclContext(ND)->isFileContext() &&
1298 !ND->isInAnonymousNamespace())
1299 Out << 'L';
1300
1301 auto *FD = dyn_cast<FunctionDecl>(ND);
1302 bool IsRegCall = FD &&
1303 FD->getType()->castAs<FunctionType>()->getCallConv() ==
1304 clang::CC_X86RegCall;
1305 if (IsRegCall)
1306 mangleRegCallName(II);
1307 else
1308 mangleSourceName(II);
1309
1310 writeAbiTags(ND, AdditionalAbiTags);
1311 break;
1312 }
1313
1314 // Otherwise, an anonymous entity. We must have a declaration.
1315 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1315, __PRETTY_FUNCTION__))
;
1316
1317 if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
1318 if (NS->isAnonymousNamespace()) {
1319 // This is how gcc mangles these names.
1320 Out << "12_GLOBAL__N_1";
1321 break;
1322 }
1323 }
1324
1325 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
1326 // We must have an anonymous union or struct declaration.
1327 const RecordDecl *RD = VD->getType()->castAs<RecordType>()->getDecl();
1328
1329 // Itanium C++ ABI 5.1.2:
1330 //
1331 // For the purposes of mangling, the name of an anonymous union is
1332 // considered to be the name of the first named data member found by a
1333 // pre-order, depth-first, declaration-order walk of the data members of
1334 // the anonymous union. If there is no such data member (i.e., if all of
1335 // the data members in the union are unnamed), then there is no way for
1336 // a program to refer to the anonymous union, and there is therefore no
1337 // need to mangle its name.
1338 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1339, __PRETTY_FUNCTION__))
1339 && "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1339, __PRETTY_FUNCTION__))
;
1340 const FieldDecl *FD = RD->findFirstNamedDataMember();
1341
1342 // It's actually possible for various reasons for us to get here
1343 // with an empty anonymous struct / union. Fortunately, it
1344 // doesn't really matter what name we generate.
1345 if (!FD) break;
1346 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1346, __PRETTY_FUNCTION__))
;
1347
1348 mangleSourceName(FD->getIdentifier());
1349 // Not emitting abi tags: internal name anyway.
1350 break;
1351 }
1352
1353 // Class extensions have no name as a category, and it's possible
1354 // for them to be the semantic parent of certain declarations
1355 // (primarily, tag decls defined within declarations). Such
1356 // declarations will always have internal linkage, so the name
1357 // doesn't really matter, but we shouldn't crash on them. For
1358 // safety, just handle all ObjC containers here.
1359 if (isa<ObjCContainerDecl>(ND))
1360 break;
1361
1362 // We must have an anonymous struct.
1363 const TagDecl *TD = cast<TagDecl>(ND);
1364 if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) {
1365 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1366, __PRETTY_FUNCTION__))
1366 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1366, __PRETTY_FUNCTION__))
;
1367 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1368, __PRETTY_FUNCTION__))
1368 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1368, __PRETTY_FUNCTION__))
;
1369 mangleSourceName(D->getDeclName().getAsIdentifierInfo());
1370 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1370, __PRETTY_FUNCTION__))
;
1371 // Explicit abi tags are still possible; take from underlying type, not
1372 // from typedef.
1373 writeAbiTags(TD, nullptr);
1374 break;
1375 }
1376
1377 // <unnamed-type-name> ::= <closure-type-name>
1378 //
1379 // <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _
1380 // <lambda-sig> ::= <template-param-decl>* <parameter-type>+
1381 // # Parameter types or 'v' for 'void'.
1382 if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) {
1383 if (Record->isLambda() && Record->getLambdaManglingNumber()) {
1384 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1385, __PRETTY_FUNCTION__))
1385 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1385, __PRETTY_FUNCTION__))
;
1386 mangleLambda(Record);
1387 break;
1388 }
1389 }
1390
1391 if (TD->isExternallyVisible()) {
1392 unsigned UnnamedMangle = getASTContext().getManglingNumber(TD);
1393 Out << "Ut";
1394 if (UnnamedMangle > 1)
1395 Out << UnnamedMangle - 2;
1396 Out << '_';
1397 writeAbiTags(TD, AdditionalAbiTags);
1398 break;
1399 }
1400
1401 // Get a unique id for the anonymous struct. If it is not a real output
1402 // ID doesn't matter so use fake one.
1403 unsigned AnonStructId = NullOut ? 0 : Context.getAnonymousStructId(TD);
1404
1405 // Mangle it as a source name in the form
1406 // [n] $_<id>
1407 // where n is the length of the string.
1408 SmallString<8> Str;
1409 Str += "$_";
1410 Str += llvm::utostr(AnonStructId);
1411
1412 Out << Str.size();
1413 Out << Str;
1414 break;
1415 }
1416
1417 case DeclarationName::ObjCZeroArgSelector:
1418 case DeclarationName::ObjCOneArgSelector:
1419 case DeclarationName::ObjCMultiArgSelector:
1420 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1420)
;
1421
1422 case DeclarationName::CXXConstructorName: {
1423 const CXXRecordDecl *InheritedFrom = nullptr;
1424 const TemplateArgumentList *InheritedTemplateArgs = nullptr;
1425 if (auto Inherited =
1426 cast<CXXConstructorDecl>(ND)->getInheritedConstructor()) {
1427 InheritedFrom = Inherited.getConstructor()->getParent();
1428 InheritedTemplateArgs =
1429 Inherited.getConstructor()->getTemplateSpecializationArgs();
1430 }
1431
1432 if (ND == Structor)
1433 // If the named decl is the C++ constructor we're mangling, use the type
1434 // we were given.
1435 mangleCXXCtorType(static_cast<CXXCtorType>(StructorType), InheritedFrom);
1436 else
1437 // Otherwise, use the complete constructor name. This is relevant if a
1438 // class with a constructor is declared within a constructor.
1439 mangleCXXCtorType(Ctor_Complete, InheritedFrom);
1440
1441 // FIXME: The template arguments are part of the enclosing prefix or
1442 // nested-name, but it's more convenient to mangle them here.
1443 if (InheritedTemplateArgs)
1444 mangleTemplateArgs(*InheritedTemplateArgs);
1445
1446 writeAbiTags(ND, AdditionalAbiTags);
1447 break;
1448 }
1449
1450 case DeclarationName::CXXDestructorName:
1451 if (ND == Structor)
1452 // If the named decl is the C++ destructor we're mangling, use the type we
1453 // were given.
1454 mangleCXXDtorType(static_cast<CXXDtorType>(StructorType));
1455 else
1456 // Otherwise, use the complete destructor name. This is relevant if a
1457 // class with a destructor is declared within a destructor.
1458 mangleCXXDtorType(Dtor_Complete);
1459 writeAbiTags(ND, AdditionalAbiTags);
1460 break;
1461
1462 case DeclarationName::CXXOperatorName:
1463 if (ND && Arity == UnknownArity) {
1464 Arity = cast<FunctionDecl>(ND)->getNumParams();
1465
1466 // If we have a member function, we need to include the 'this' pointer.
1467 if (const auto *MD = dyn_cast<CXXMethodDecl>(ND))
1468 if (!MD->isStatic())
1469 Arity++;
1470 }
1471 LLVM_FALLTHROUGH[[gnu::fallthrough]];
1472 case DeclarationName::CXXConversionFunctionName:
1473 case DeclarationName::CXXLiteralOperatorName:
1474 mangleOperatorName(Name, Arity);
1475 writeAbiTags(ND, AdditionalAbiTags);
1476 break;
1477
1478 case DeclarationName::CXXDeductionGuideName:
1479 llvm_unreachable("Can't mangle a deduction guide name!")::llvm::llvm_unreachable_internal("Can't mangle a deduction guide name!"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1479)
;
1480
1481 case DeclarationName::CXXUsingDirective:
1482 llvm_unreachable("Can't mangle a using directive name!")::llvm::llvm_unreachable_internal("Can't mangle a using directive name!"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1482)
;
1483 }
1484}
1485
1486void CXXNameMangler::mangleRegCallName(const IdentifierInfo *II) {
1487 // <source-name> ::= <positive length number> __regcall3__ <identifier>
1488 // <number> ::= [n] <non-negative decimal integer>
1489 // <identifier> ::= <unqualified source code identifier>
1490 Out << II->getLength() + sizeof("__regcall3__") - 1 << "__regcall3__"
1491 << II->getName();
1492}
1493
1494void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) {
1495 // <source-name> ::= <positive length number> <identifier>
1496 // <number> ::= [n] <non-negative decimal integer>
1497 // <identifier> ::= <unqualified source code identifier>
1498 Out << II->getLength() << II->getName();
1499}
1500
1501void CXXNameMangler::mangleNestedName(const NamedDecl *ND,
1502 const DeclContext *DC,
1503 const AbiTagList *AdditionalAbiTags,
1504 bool NoFunction) {
1505 // <nested-name>
1506 // ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E
1507 // ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix>
1508 // <template-args> E
1509
1510 Out << 'N';
1511 if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND)) {
1512 Qualifiers MethodQuals = Method->getMethodQualifiers();
1513 // We do not consider restrict a distinguishing attribute for overloading
1514 // purposes so we must not mangle it.
1515 MethodQuals.removeRestrict();
1516 mangleQualifiers(MethodQuals);
1517 mangleRefQualifier(Method->getRefQualifier());
1518 }
1519
1520 // Check if we have a template.
1521 const TemplateArgumentList *TemplateArgs = nullptr;
1522 if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
1523 mangleTemplatePrefix(TD, NoFunction);
1524 mangleTemplateArgs(*TemplateArgs);
1525 }
1526 else {
1527 manglePrefix(DC, NoFunction);
1528 mangleUnqualifiedName(ND, AdditionalAbiTags);
1529 }
1530
1531 Out << 'E';
1532}
1533void CXXNameMangler::mangleNestedName(const TemplateDecl *TD,
1534 const TemplateArgument *TemplateArgs,
1535 unsigned NumTemplateArgs) {
1536 // <nested-name> ::= N [<CV-qualifiers>] <template-prefix> <template-args> E
1537
1538 Out << 'N';
1539
1540 mangleTemplatePrefix(TD);
1541 mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
1542
1543 Out << 'E';
1544}
1545
1546void CXXNameMangler::mangleLocalName(const Decl *D,
1547 const AbiTagList *AdditionalAbiTags) {
1548 // <local-name> := Z <function encoding> E <entity name> [<discriminator>]
1549 // := Z <function encoding> E s [<discriminator>]
1550 // <local-name> := Z <function encoding> E d [ <parameter number> ]
1551 // _ <entity name>
1552 // <discriminator> := _ <non-negative number>
1553 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1553, __PRETTY_FUNCTION__))
;
1554 const RecordDecl *RD = GetLocalClassDecl(D);
1555 const DeclContext *DC = getEffectiveDeclContext(RD ? RD : D);
1556
1557 Out << 'Z';
1558
1559 {
1560 AbiTagState LocalAbiTags(AbiTags);
1561
1562 if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(DC))
1563 mangleObjCMethodName(MD);
1564 else if (const BlockDecl *BD = dyn_cast<BlockDecl>(DC))
1565 mangleBlockForPrefix(BD);
1566 else
1567 mangleFunctionEncoding(cast<FunctionDecl>(DC));
1568
1569 // Implicit ABI tags (from namespace) are not available in the following
1570 // entity; reset to actually emitted tags, which are available.
1571 LocalAbiTags.setUsedAbiTags(LocalAbiTags.getEmittedAbiTags());
1572 }
1573
1574 Out << 'E';
1575
1576 // GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to
1577 // be a bug that is fixed in trunk.
1578
1579 if (RD) {
1580 // The parameter number is omitted for the last parameter, 0 for the
1581 // second-to-last parameter, 1 for the third-to-last parameter, etc. The
1582 // <entity name> will of course contain a <closure-type-name>: Its
1583 // numbering will be local to the particular argument in which it appears
1584 // -- other default arguments do not affect its encoding.
1585 const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD);
1586 if (CXXRD && CXXRD->isLambda()) {
1587 if (const ParmVarDecl *Parm
1588 = dyn_cast_or_null<ParmVarDecl>(CXXRD->getLambdaContextDecl())) {
1589 if (const FunctionDecl *Func
1590 = dyn_cast<FunctionDecl>(Parm->getDeclContext())) {
1591 Out << 'd';
1592 unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex();
1593 if (Num > 1)
1594 mangleNumber(Num - 2);
1595 Out << '_';
1596 }
1597 }
1598 }
1599
1600 // Mangle the name relative to the closest enclosing function.
1601 // equality ok because RD derived from ND above
1602 if (D == RD) {
1603 mangleUnqualifiedName(RD, AdditionalAbiTags);
1604 } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
1605 manglePrefix(getEffectiveDeclContext(BD), true /*NoFunction*/);
1606 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1606, __PRETTY_FUNCTION__))
;
1607 mangleUnqualifiedBlock(BD);
1608 } else {
1609 const NamedDecl *ND = cast<NamedDecl>(D);
1610 mangleNestedName(ND, getEffectiveDeclContext(ND), AdditionalAbiTags,
1611 true /*NoFunction*/);
1612 }
1613 } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
1614 // Mangle a block in a default parameter; see above explanation for
1615 // lambdas.
1616 if (const ParmVarDecl *Parm
1617 = dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl())) {
1618 if (const FunctionDecl *Func
1619 = dyn_cast<FunctionDecl>(Parm->getDeclContext())) {
1620 Out << 'd';
1621 unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex();
1622 if (Num > 1)
1623 mangleNumber(Num - 2);
1624 Out << '_';
1625 }
1626 }
1627
1628 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1628, __PRETTY_FUNCTION__))
;
1629 mangleUnqualifiedBlock(BD);
1630 } else {
1631 mangleUnqualifiedName(cast<NamedDecl>(D), AdditionalAbiTags);
1632 }
1633
1634 if (const NamedDecl *ND = dyn_cast<NamedDecl>(RD ? RD : D)) {
1635 unsigned disc;
1636 if (Context.getNextDiscriminator(ND, disc)) {
1637 if (disc < 10)
1638 Out << '_' << disc;
1639 else
1640 Out << "__" << disc << '_';
1641 }
1642 }
1643}
1644
1645void CXXNameMangler::mangleBlockForPrefix(const BlockDecl *Block) {
1646 if (GetLocalClassDecl(Block)) {
1647 mangleLocalName(Block, /* AdditionalAbiTags */ nullptr);
1648 return;
1649 }
1650 const DeclContext *DC = getEffectiveDeclContext(Block);
1651 if (isLocalContainerContext(DC)) {
1652 mangleLocalName(Block, /* AdditionalAbiTags */ nullptr);
1653 return;
1654 }
1655 manglePrefix(getEffectiveDeclContext(Block));
1656 mangleUnqualifiedBlock(Block);
1657}
1658
1659void CXXNameMangler::mangleUnqualifiedBlock(const BlockDecl *Block) {
1660 if (Decl *Context = Block->getBlockManglingContextDecl()) {
1661 if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) &&
1662 Context->getDeclContext()->isRecord()) {
1663 const auto *ND = cast<NamedDecl>(Context);
1664 if (ND->getIdentifier()) {
1665 mangleSourceNameWithAbiTags(ND);
1666 Out << 'M';
1667 }
1668 }
1669 }
1670
1671 // If we have a block mangling number, use it.
1672 unsigned Number = Block->getBlockManglingNumber();
1673 // Otherwise, just make up a number. It doesn't matter what it is because
1674 // the symbol in question isn't externally visible.
1675 if (!Number)
1676 Number = Context.getBlockId(Block, false);
1677 else {
1678 // Stored mangling numbers are 1-based.
1679 --Number;
1680 }
1681 Out << "Ub";
1682 if (Number > 0)
1683 Out << Number - 1;
1684 Out << '_';
1685}
1686
1687// <template-param-decl>
1688// ::= Ty # template type parameter
1689// ::= Tn <type> # template non-type parameter
1690// ::= Tt <template-param-decl>* E # template template parameter
1691// ::= Tp <template-param-decl> # template parameter pack
1692void CXXNameMangler::mangleTemplateParamDecl(const NamedDecl *Decl) {
1693 if (auto *Ty = dyn_cast<TemplateTypeParmDecl>(Decl)) {
1694 if (Ty->isParameterPack())
1695 Out << "Tp";
1696 Out << "Ty";
1697 } else if (auto *Tn = dyn_cast<NonTypeTemplateParmDecl>(Decl)) {
1698 if (Tn->isExpandedParameterPack()) {
1699 for (unsigned I = 0, N = Tn->getNumExpansionTypes(); I != N; ++I) {
1700 Out << "Tn";
1701 mangleType(Tn->getExpansionType(I));
1702 }
1703 } else {
1704 QualType T = Tn->getType();
1705 if (Tn->isParameterPack()) {
1706 Out << "Tp";
1707 if (auto *PackExpansion = T->getAs<PackExpansionType>())
1708 T = PackExpansion->getPattern();
1709 }
1710 Out << "Tn";
1711 mangleType(T);
1712 }
1713 } else if (auto *Tt = dyn_cast<TemplateTemplateParmDecl>(Decl)) {
1714 if (Tt->isExpandedParameterPack()) {
1715 for (unsigned I = 0, N = Tt->getNumExpansionTemplateParameters(); I != N;
1716 ++I) {
1717 Out << "Tt";
1718 for (auto *Param : *Tt->getExpansionTemplateParameters(I))
1719 mangleTemplateParamDecl(Param);
1720 Out << "E";
1721 }
1722 } else {
1723 if (Tt->isParameterPack())
1724 Out << "Tp";
1725 Out << "Tt";
1726 for (auto *Param : *Tt->getTemplateParameters())
1727 mangleTemplateParamDecl(Param);
1728 Out << "E";
1729 }
1730 }
1731}
1732
1733void CXXNameMangler::mangleLambda(const CXXRecordDecl *Lambda) {
1734 // If the context of a closure type is an initializer for a class member
1735 // (static or nonstatic), it is encoded in a qualified name with a final
1736 // <prefix> of the form:
1737 //
1738 // <data-member-prefix> := <member source-name> M
1739 //
1740 // Technically, the data-member-prefix is part of the <prefix>. However,
1741 // since a closure type will always be mangled with a prefix, it's easier
1742 // to emit that last part of the prefix here.
1743 if (Decl *Context = Lambda->getLambdaContextDecl()) {
1744 if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) &&
1745 !isa<ParmVarDecl>(Context)) {
1746 // FIXME: 'inline auto [a, b] = []{ return ... };' does not get a
1747 // reasonable mangling here.
1748 if (const IdentifierInfo *Name
1749 = cast<NamedDecl>(Context)->getIdentifier()) {
1750 mangleSourceName(Name);
1751 const TemplateArgumentList *TemplateArgs = nullptr;
1752 if (isTemplate(cast<NamedDecl>(Context), TemplateArgs))
1753 mangleTemplateArgs(*TemplateArgs);
1754 Out << 'M';
1755 }
1756 }
1757 }
1758
1759 Out << "Ul";
1760 mangleLambdaSig(Lambda);
1761 Out << "E";
1762
1763 // The number is omitted for the first closure type with a given
1764 // <lambda-sig> in a given context; it is n-2 for the nth closure type
1765 // (in lexical order) with that same <lambda-sig> and context.
1766 //
1767 // The AST keeps track of the number for us.
1768 unsigned Number = Lambda->getLambdaManglingNumber();
1769 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1769, __PRETTY_FUNCTION__))
;
1770 if (Number > 1)
1771 mangleNumber(Number - 2);
1772 Out << '_';
1773}
1774
1775void CXXNameMangler::mangleLambdaSig(const CXXRecordDecl *Lambda) {
1776 for (auto *D : Lambda->getLambdaExplicitTemplateParameters())
2
Assuming '__begin1' is equal to '__end1'
1777 mangleTemplateParamDecl(D);
1778 const FunctionProtoType *Proto = Lambda->getLambdaTypeInfo()->getType()->
3
Assuming the object is not a 'FunctionProtoType'
4
'Proto' initialized to a null pointer value
1779 getAs<FunctionProtoType>();
1780 mangleBareFunctionType(Proto, /*MangleReturnType=*/false,
5
Passing null pointer value via 1st parameter 'Proto'
6
Calling 'CXXNameMangler::mangleBareFunctionType'
1781 Lambda->getLambdaStaticInvoker());
1782}
1783
1784void CXXNameMangler::manglePrefix(NestedNameSpecifier *qualifier) {
1785 switch (qualifier->getKind()) {
1786 case NestedNameSpecifier::Global:
1787 // nothing
1788 return;
1789
1790 case NestedNameSpecifier::Super:
1791 llvm_unreachable("Can't mangle __super specifier")::llvm::llvm_unreachable_internal("Can't mangle __super specifier"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1791)
;
1792
1793 case NestedNameSpecifier::Namespace:
1794 mangleName(qualifier->getAsNamespace());
1795 return;
1796
1797 case NestedNameSpecifier::NamespaceAlias:
1798 mangleName(qualifier->getAsNamespaceAlias()->getNamespace());
1799 return;
1800
1801 case NestedNameSpecifier::TypeSpec:
1802 case NestedNameSpecifier::TypeSpecWithTemplate:
1803 manglePrefix(QualType(qualifier->getAsType(), 0));
1804 return;
1805
1806 case NestedNameSpecifier::Identifier:
1807 // Member expressions can have these without prefixes, but that
1808 // should end up in mangleUnresolvedPrefix instead.
1809 assert(qualifier->getPrefix())((qualifier->getPrefix()) ? static_cast<void> (0) : __assert_fail
("qualifier->getPrefix()", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1809, __PRETTY_FUNCTION__))
;
1810 manglePrefix(qualifier->getPrefix());
1811
1812 mangleSourceName(qualifier->getAsIdentifier());
1813 return;
1814 }
1815
1816 llvm_unreachable("unexpected nested name specifier")::llvm::llvm_unreachable_internal("unexpected nested name specifier"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1816)
;
1817}
1818
1819void CXXNameMangler::manglePrefix(const DeclContext *DC, bool NoFunction) {
1820 // <prefix> ::= <prefix> <unqualified-name>
1821 // ::= <template-prefix> <template-args>
1822 // ::= <template-param>
1823 // ::= # empty
1824 // ::= <substitution>
1825
1826 DC = IgnoreLinkageSpecDecls(DC);
1827
1828 if (DC->isTranslationUnit())
1829 return;
1830
1831 if (NoFunction && isLocalContainerContext(DC))
1832 return;
1833
1834 assert(!isLocalContainerContext(DC))((!isLocalContainerContext(DC)) ? static_cast<void> (0)
: __assert_fail ("!isLocalContainerContext(DC)", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1834, __PRETTY_FUNCTION__))
;
1835
1836 const NamedDecl *ND = cast<NamedDecl>(DC);
1837 if (mangleSubstitution(ND))
1838 return;
1839
1840 // Check if we have a template.
1841 const TemplateArgumentList *TemplateArgs = nullptr;
1842 if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
1843 mangleTemplatePrefix(TD);
1844 mangleTemplateArgs(*TemplateArgs);
1845 } else {
1846 manglePrefix(getEffectiveDeclContext(ND), NoFunction);
1847 mangleUnqualifiedName(ND, nullptr);
1848 }
1849
1850 addSubstitution(ND);
1851}
1852
1853void CXXNameMangler::mangleTemplatePrefix(TemplateName Template) {
1854 // <template-prefix> ::= <prefix> <template unqualified-name>
1855 // ::= <template-param>
1856 // ::= <substitution>
1857 if (TemplateDecl *TD = Template.getAsTemplateDecl())
1858 return mangleTemplatePrefix(TD);
1859
1860 if (QualifiedTemplateName *Qualified = Template.getAsQualifiedTemplateName())
1861 manglePrefix(Qualified->getQualifier());
1862
1863 if (OverloadedTemplateStorage *Overloaded
1864 = Template.getAsOverloadedTemplate()) {
1865 mangleUnqualifiedName(nullptr, (*Overloaded->begin())->getDeclName(),
1866 UnknownArity, nullptr);
1867 return;
1868 }
1869
1870 DependentTemplateName *Dependent = Template.getAsDependentTemplateName();
1871 assert(Dependent && "Unknown template name kind?")((Dependent && "Unknown template name kind?") ? static_cast
<void> (0) : __assert_fail ("Dependent && \"Unknown template name kind?\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1871, __PRETTY_FUNCTION__))
;
1872 if (NestedNameSpecifier *Qualifier = Dependent->getQualifier())
1873 manglePrefix(Qualifier);
1874 mangleUnscopedTemplateName(Template, /* AdditionalAbiTags */ nullptr);
1875}
1876
1877void CXXNameMangler::mangleTemplatePrefix(const TemplateDecl *ND,
1878 bool NoFunction) {
1879 // <template-prefix> ::= <prefix> <template unqualified-name>
1880 // ::= <template-param>
1881 // ::= <substitution>
1882 // <template-template-param> ::= <template-param>
1883 // <substitution>
1884
1885 if (mangleSubstitution(ND))
1886 return;
1887
1888 // <template-template-param> ::= <template-param>
1889 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) {
1890 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
1891 } else {
1892 manglePrefix(getEffectiveDeclContext(ND), NoFunction);
1893 if (isa<BuiltinTemplateDecl>(ND))
1894 mangleUnqualifiedName(ND, nullptr);
1895 else
1896 mangleUnqualifiedName(ND->getTemplatedDecl(), nullptr);
1897 }
1898
1899 addSubstitution(ND);
1900}
1901
1902/// Mangles a template name under the production <type>. Required for
1903/// template template arguments.
1904/// <type> ::= <class-enum-type>
1905/// ::= <template-param>
1906/// ::= <substitution>
1907void CXXNameMangler::mangleType(TemplateName TN) {
1908 if (mangleSubstitution(TN))
1909 return;
1910
1911 TemplateDecl *TD = nullptr;
1912
1913 switch (TN.getKind()) {
1914 case TemplateName::QualifiedTemplate:
1915 TD = TN.getAsQualifiedTemplateName()->getTemplateDecl();
1916 goto HaveDecl;
1917
1918 case TemplateName::Template:
1919 TD = TN.getAsTemplateDecl();
1920 goto HaveDecl;
1921
1922 HaveDecl:
1923 if (auto *TTP = dyn_cast<TemplateTemplateParmDecl>(TD))
1924 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
1925 else
1926 mangleName(TD);
1927 break;
1928
1929 case TemplateName::OverloadedTemplate:
1930 case TemplateName::AssumedTemplate:
1931 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1931)
;
1932
1933 case TemplateName::DependentTemplate: {
1934 const DependentTemplateName *Dependent = TN.getAsDependentTemplateName();
1935 assert(Dependent->isIdentifier())((Dependent->isIdentifier()) ? static_cast<void> (0)
: __assert_fail ("Dependent->isIdentifier()", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 1935, __PRETTY_FUNCTION__))
;
1936
1937 // <class-enum-type> ::= <name>
1938 // <name> ::= <nested-name>
1939 mangleUnresolvedPrefix(Dependent->getQualifier());
1940 mangleSourceName(Dependent->getIdentifier());
1941 break;
1942 }
1943
1944 case TemplateName::SubstTemplateTemplateParm: {
1945 // Substituted template parameters are mangled as the substituted
1946 // template. This will check for the substitution twice, which is
1947 // fine, but we have to return early so that we don't try to *add*
1948 // the substitution twice.
1949 SubstTemplateTemplateParmStorage *subst
1950 = TN.getAsSubstTemplateTemplateParm();
1951 mangleType(subst->getReplacement());
1952 return;
1953 }
1954
1955 case TemplateName::SubstTemplateTemplateParmPack: {
1956 // FIXME: not clear how to mangle this!
1957 // template <template <class> class T...> class A {
1958 // template <template <class> class U...> void foo(B<T,U> x...);
1959 // };
1960 Out << "_SUBSTPACK_";
1961 break;
1962 }
1963 }
1964
1965 addSubstitution(TN);
1966}
1967
1968bool CXXNameMangler::mangleUnresolvedTypeOrSimpleId(QualType Ty,
1969 StringRef Prefix) {
1970 // Only certain other types are valid as prefixes; enumerate them.
1971 switch (Ty->getTypeClass()) {
1972 case Type::Builtin:
1973 case Type::Complex:
1974 case Type::Adjusted:
1975 case Type::Decayed:
1976 case Type::Pointer:
1977 case Type::BlockPointer:
1978 case Type::LValueReference:
1979 case Type::RValueReference:
1980 case Type::MemberPointer:
1981 case Type::ConstantArray:
1982 case Type::IncompleteArray:
1983 case Type::VariableArray:
1984 case Type::DependentSizedArray:
1985 case Type::DependentAddressSpace:
1986 case Type::DependentVector:
1987 case Type::DependentSizedExtVector:
1988 case Type::Vector:
1989 case Type::ExtVector:
1990 case Type::FunctionProto:
1991 case Type::FunctionNoProto:
1992 case Type::Paren:
1993 case Type::Attributed:
1994 case Type::Auto:
1995 case Type::DeducedTemplateSpecialization:
1996 case Type::PackExpansion:
1997 case Type::ObjCObject:
1998 case Type::ObjCInterface:
1999 case Type::ObjCObjectPointer:
2000 case Type::ObjCTypeParam:
2001 case Type::Atomic:
2002 case Type::Pipe:
2003 case Type::MacroQualified:
2004 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2004)
;
2005
2006 case Type::SubstTemplateTypeParmPack:
2007 // FIXME: not clear how to mangle this!
2008 // template <class T...> class A {
2009 // template <class U...> void foo(decltype(T::foo(U())) x...);
2010 // };
2011 Out << "_SUBSTPACK_";
2012 break;
2013
2014 // <unresolved-type> ::= <template-param>
2015 // ::= <decltype>
2016 // ::= <template-template-param> <template-args>
2017 // (this last is not official yet)
2018 case Type::TypeOfExpr:
2019 case Type::TypeOf:
2020 case Type::Decltype:
2021 case Type::TemplateTypeParm:
2022 case Type::UnaryTransform:
2023 case Type::SubstTemplateTypeParm:
2024 unresolvedType:
2025 // Some callers want a prefix before the mangled type.
2026 Out << Prefix;
2027
2028 // This seems to do everything we want. It's not really
2029 // sanctioned for a substituted template parameter, though.
2030 mangleType(Ty);
2031
2032 // We never want to print 'E' directly after an unresolved-type,
2033 // so we return directly.
2034 return true;
2035
2036 case Type::Typedef:
2037 mangleSourceNameWithAbiTags(cast<TypedefType>(Ty)->getDecl());
2038 break;
2039
2040 case Type::UnresolvedUsing:
2041 mangleSourceNameWithAbiTags(
2042 cast<UnresolvedUsingType>(Ty)->getDecl());
2043 break;
2044
2045 case Type::Enum:
2046 case Type::Record:
2047 mangleSourceNameWithAbiTags(cast<TagType>(Ty)->getDecl());
2048 break;
2049
2050 case Type::TemplateSpecialization: {
2051 const TemplateSpecializationType *TST =
2052 cast<TemplateSpecializationType>(Ty);
2053 TemplateName TN = TST->getTemplateName();
2054 switch (TN.getKind()) {
2055 case TemplateName::Template:
2056 case TemplateName::QualifiedTemplate: {
2057 TemplateDecl *TD = TN.getAsTemplateDecl();
2058
2059 // If the base is a template template parameter, this is an
2060 // unresolved type.
2061 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2061, __PRETTY_FUNCTION__))
;
2062 if (isa<TemplateTemplateParmDecl>(TD))
2063 goto unresolvedType;
2064
2065 mangleSourceNameWithAbiTags(TD);
2066 break;
2067 }
2068
2069 case TemplateName::OverloadedTemplate:
2070 case TemplateName::AssumedTemplate:
2071 case TemplateName::DependentTemplate:
2072 llvm_unreachable("invalid base for a template specialization type")::llvm::llvm_unreachable_internal("invalid base for a template specialization type"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2072)
;
2073
2074 case TemplateName::SubstTemplateTemplateParm: {
2075 SubstTemplateTemplateParmStorage *subst =
2076 TN.getAsSubstTemplateTemplateParm();
2077 mangleExistingSubstitution(subst->getReplacement());
2078 break;
2079 }
2080
2081 case TemplateName::SubstTemplateTemplateParmPack: {
2082 // FIXME: not clear how to mangle this!
2083 // template <template <class U> class T...> class A {
2084 // template <class U...> void foo(decltype(T<U>::foo) x...);
2085 // };
2086 Out << "_SUBSTPACK_";
2087 break;
2088 }
2089 }
2090
2091 mangleTemplateArgs(TST->getArgs(), TST->getNumArgs());
2092 break;
2093 }
2094
2095 case Type::InjectedClassName:
2096 mangleSourceNameWithAbiTags(
2097 cast<InjectedClassNameType>(Ty)->getDecl());
2098 break;
2099
2100 case Type::DependentName:
2101 mangleSourceName(cast<DependentNameType>(Ty)->getIdentifier());
2102 break;
2103
2104 case Type::DependentTemplateSpecialization: {
2105 const DependentTemplateSpecializationType *DTST =
2106 cast<DependentTemplateSpecializationType>(Ty);
2107 mangleSourceName(DTST->getIdentifier());
2108 mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs());
2109 break;
2110 }
2111
2112 case Type::Elaborated:
2113 return mangleUnresolvedTypeOrSimpleId(
2114 cast<ElaboratedType>(Ty)->getNamedType(), Prefix);
2115 }
2116
2117 return false;
2118}
2119
2120void CXXNameMangler::mangleOperatorName(DeclarationName Name, unsigned Arity) {
2121 switch (Name.getNameKind()) {
2122 case DeclarationName::CXXConstructorName:
2123 case DeclarationName::CXXDestructorName:
2124 case DeclarationName::CXXDeductionGuideName:
2125 case DeclarationName::CXXUsingDirective:
2126 case DeclarationName::Identifier:
2127 case DeclarationName::ObjCMultiArgSelector:
2128 case DeclarationName::ObjCOneArgSelector:
2129 case DeclarationName::ObjCZeroArgSelector:
2130 llvm_unreachable("Not an operator name")::llvm::llvm_unreachable_internal("Not an operator name", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2130)
;
2131
2132 case DeclarationName::CXXConversionFunctionName:
2133 // <operator-name> ::= cv <type> # (cast)
2134 Out << "cv";
2135 mangleType(Name.getCXXNameType());
2136 break;
2137
2138 case DeclarationName::CXXLiteralOperatorName:
2139 Out << "li";
2140 mangleSourceName(Name.getCXXLiteralIdentifier());
2141 return;
2142
2143 case DeclarationName::CXXOperatorName:
2144 mangleOperatorName(Name.getCXXOverloadedOperator(), Arity);
2145 break;
2146 }
2147}
2148
2149void
2150CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) {
2151 switch (OO) {
2152 // <operator-name> ::= nw # new
2153 case OO_New: Out << "nw"; break;
2154 // ::= na # new[]
2155 case OO_Array_New: Out << "na"; break;
2156 // ::= dl # delete
2157 case OO_Delete: Out << "dl"; break;
2158 // ::= da # delete[]
2159 case OO_Array_Delete: Out << "da"; break;
2160 // ::= ps # + (unary)
2161 // ::= pl # + (binary or unknown)
2162 case OO_Plus:
2163 Out << (Arity == 1? "ps" : "pl"); break;
2164 // ::= ng # - (unary)
2165 // ::= mi # - (binary or unknown)
2166 case OO_Minus:
2167 Out << (Arity == 1? "ng" : "mi"); break;
2168 // ::= ad # & (unary)
2169 // ::= an # & (binary or unknown)
2170 case OO_Amp:
2171 Out << (Arity == 1? "ad" : "an"); break;
2172 // ::= de # * (unary)
2173 // ::= ml # * (binary or unknown)
2174 case OO_Star:
2175 // Use binary when unknown.
2176 Out << (Arity == 1? "de" : "ml"); break;
2177 // ::= co # ~
2178 case OO_Tilde: Out << "co"; break;
2179 // ::= dv # /
2180 case OO_Slash: Out << "dv"; break;
2181 // ::= rm # %
2182 case OO_Percent: Out << "rm"; break;
2183 // ::= or # |
2184 case OO_Pipe: Out << "or"; break;
2185 // ::= eo # ^
2186 case OO_Caret: Out << "eo"; break;
2187 // ::= aS # =
2188 case OO_Equal: Out << "aS"; break;
2189 // ::= pL # +=
2190 case OO_PlusEqual: Out << "pL"; break;
2191 // ::= mI # -=
2192 case OO_MinusEqual: Out << "mI"; break;
2193 // ::= mL # *=
2194 case OO_StarEqual: Out << "mL"; break;
2195 // ::= dV # /=
2196 case OO_SlashEqual: Out << "dV"; break;
2197 // ::= rM # %=
2198 case OO_PercentEqual: Out << "rM"; break;
2199 // ::= aN # &=
2200 case OO_AmpEqual: Out << "aN"; break;
2201 // ::= oR # |=
2202 case OO_PipeEqual: Out << "oR"; break;
2203 // ::= eO # ^=
2204 case OO_CaretEqual: Out << "eO"; break;
2205 // ::= ls # <<
2206 case OO_LessLess: Out << "ls"; break;
2207 // ::= rs # >>
2208 case OO_GreaterGreater: Out << "rs"; break;
2209 // ::= lS # <<=
2210 case OO_LessLessEqual: Out << "lS"; break;
2211 // ::= rS # >>=
2212 case OO_GreaterGreaterEqual: Out << "rS"; break;
2213 // ::= eq # ==
2214 case OO_EqualEqual: Out << "eq"; break;
2215 // ::= ne # !=
2216 case OO_ExclaimEqual: Out << "ne"; break;
2217 // ::= lt # <
2218 case OO_Less: Out << "lt"; break;
2219 // ::= gt # >
2220 case OO_Greater: Out << "gt"; break;
2221 // ::= le # <=
2222 case OO_LessEqual: Out << "le"; break;
2223 // ::= ge # >=
2224 case OO_GreaterEqual: Out << "ge"; break;
2225 // ::= nt # !
2226 case OO_Exclaim: Out << "nt"; break;
2227 // ::= aa # &&
2228 case OO_AmpAmp: Out << "aa"; break;
2229 // ::= oo # ||
2230 case OO_PipePipe: Out << "oo"; break;
2231 // ::= pp # ++
2232 case OO_PlusPlus: Out << "pp"; break;
2233 // ::= mm # --
2234 case OO_MinusMinus: Out << "mm"; break;
2235 // ::= cm # ,
2236 case OO_Comma: Out << "cm"; break;
2237 // ::= pm # ->*
2238 case OO_ArrowStar: Out << "pm"; break;
2239 // ::= pt # ->
2240 case OO_Arrow: Out << "pt"; break;
2241 // ::= cl # ()
2242 case OO_Call: Out << "cl"; break;
2243 // ::= ix # []
2244 case OO_Subscript: Out << "ix"; break;
2245
2246 // ::= qu # ?
2247 // The conditional operator can't be overloaded, but we still handle it when
2248 // mangling expressions.
2249 case OO_Conditional: Out << "qu"; break;
2250 // Proposal on cxx-abi-dev, 2015-10-21.
2251 // ::= aw # co_await
2252 case OO_Coawait: Out << "aw"; break;
2253 // Proposed in cxx-abi github issue 43.
2254 // ::= ss # <=>
2255 case OO_Spaceship: Out << "ss"; break;
2256
2257 case OO_None:
2258 case NUM_OVERLOADED_OPERATORS:
2259 llvm_unreachable("Not an overloaded operator")::llvm::llvm_unreachable_internal("Not an overloaded operator"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2259)
;
2260 }
2261}
2262
2263void CXXNameMangler::mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST) {
2264 // Vendor qualifiers come first and if they are order-insensitive they must
2265 // be emitted in reversed alphabetical order, see Itanium ABI 5.1.5.
2266
2267 // <type> ::= U <addrspace-expr>
2268 if (DAST) {
2269 Out << "U2ASI";
2270 mangleExpression(DAST->getAddrSpaceExpr());
2271 Out << "E";
2272 }
2273
2274 // Address space qualifiers start with an ordinary letter.
2275 if (Quals.hasAddressSpace()) {
2276 // Address space extension:
2277 //
2278 // <type> ::= U <target-addrspace>
2279 // <type> ::= U <OpenCL-addrspace>
2280 // <type> ::= U <CUDA-addrspace>
2281
2282 SmallString<64> ASString;
2283 LangAS AS = Quals.getAddressSpace();
2284
2285 if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
2286 // <target-addrspace> ::= "AS" <address-space-number>
2287 unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
2288 if (TargetAS != 0)
2289 ASString = "AS" + llvm::utostr(TargetAS);
2290 } else {
2291 switch (AS) {
2292 default: llvm_unreachable("Not a language specific address space")::llvm::llvm_unreachable_internal("Not a language specific address space"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2292)
;
2293 // <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" |
2294 // "private"| "generic" ]
2295 case LangAS::opencl_global: ASString = "CLglobal"; break;
2296 case LangAS::opencl_local: ASString = "CLlocal"; break;
2297 case LangAS::opencl_constant: ASString = "CLconstant"; break;
2298 case LangAS::opencl_private: ASString = "CLprivate"; break;
2299 case LangAS::opencl_generic: ASString = "CLgeneric"; break;
2300 // <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ]
2301 case LangAS::cuda_device: ASString = "CUdevice"; break;
2302 case LangAS::cuda_constant: ASString = "CUconstant"; break;
2303 case LangAS::cuda_shared: ASString = "CUshared"; break;
2304 }
2305 }
2306 if (!ASString.empty())
2307 mangleVendorQualifier(ASString);
2308 }
2309
2310 // The ARC ownership qualifiers start with underscores.
2311 // Objective-C ARC Extension:
2312 //
2313 // <type> ::= U "__strong"
2314 // <type> ::= U "__weak"
2315 // <type> ::= U "__autoreleasing"
2316 //
2317 // Note: we emit __weak first to preserve the order as
2318 // required by the Itanium ABI.
2319 if (Quals.getObjCLifetime() == Qualifiers::OCL_Weak)
2320 mangleVendorQualifier("__weak");
2321
2322 // __unaligned (from -fms-extensions)
2323 if (Quals.hasUnaligned())
2324 mangleVendorQualifier("__unaligned");
2325
2326 // Remaining ARC ownership qualifiers.
2327 switch (Quals.getObjCLifetime()) {
2328 case Qualifiers::OCL_None:
2329 break;
2330
2331 case Qualifiers::OCL_Weak:
2332 // Do nothing as we already handled this case above.
2333 break;
2334
2335 case Qualifiers::OCL_Strong:
2336 mangleVendorQualifier("__strong");
2337 break;
2338
2339 case Qualifiers::OCL_Autoreleasing:
2340 mangleVendorQualifier("__autoreleasing");
2341 break;
2342
2343 case Qualifiers::OCL_ExplicitNone:
2344 // The __unsafe_unretained qualifier is *not* mangled, so that
2345 // __unsafe_unretained types in ARC produce the same manglings as the
2346 // equivalent (but, naturally, unqualified) types in non-ARC, providing
2347 // better ABI compatibility.
2348 //
2349 // It's safe to do this because unqualified 'id' won't show up
2350 // in any type signatures that need to be mangled.
2351 break;
2352 }
2353
2354 // <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const
2355 if (Quals.hasRestrict())
2356 Out << 'r';
2357 if (Quals.hasVolatile())
2358 Out << 'V';
2359 if (Quals.hasConst())
2360 Out << 'K';
2361}
2362
2363void CXXNameMangler::mangleVendorQualifier(StringRef name) {
2364 Out << 'U' << name.size() << name;
2365}
2366
2367void CXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) {
2368 // <ref-qualifier> ::= R # lvalue reference
2369 // ::= O # rvalue-reference
2370 switch (RefQualifier) {
2371 case RQ_None:
2372 break;
2373
2374 case RQ_LValue:
2375 Out << 'R';
2376 break;
2377
2378 case RQ_RValue:
2379 Out << 'O';
2380 break;
2381 }
2382}
2383
2384void CXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) {
2385 Context.mangleObjCMethodName(MD, Out);
2386}
2387
2388static bool isTypeSubstitutable(Qualifiers Quals, const Type *Ty,
2389 ASTContext &Ctx) {
2390 if (Quals)
2391 return true;
2392 if (Ty->isSpecificBuiltinType(BuiltinType::ObjCSel))
2393 return true;
2394 if (Ty->isOpenCLSpecificType())
2395 return true;
2396 if (Ty->isBuiltinType())
2397 return false;
2398 // Through to Clang 6.0, we accidentally treated undeduced auto types as
2399 // substitution candidates.
2400 if (Ctx.getLangOpts().getClangABICompat() > LangOptions::ClangABI::Ver6 &&
2401 isa<AutoType>(Ty))
2402 return false;
2403 return true;
2404}
2405
2406void CXXNameMangler::mangleType(QualType T) {
2407 // If our type is instantiation-dependent but not dependent, we mangle
2408 // it as it was written in the source, removing any top-level sugar.
2409 // Otherwise, use the canonical type.
2410 //
2411 // FIXME: This is an approximation of the instantiation-dependent name
2412 // mangling rules, since we should really be using the type as written and
2413 // augmented via semantic analysis (i.e., with implicit conversions and
2414 // default template arguments) for any instantiation-dependent type.
2415 // Unfortunately, that requires several changes to our AST:
2416 // - Instantiation-dependent TemplateSpecializationTypes will need to be
2417 // uniqued, so that we can handle substitutions properly
2418 // - Default template arguments will need to be represented in the
2419 // TemplateSpecializationType, since they need to be mangled even though
2420 // they aren't written.
2421 // - Conversions on non-type template arguments need to be expressed, since
2422 // they can affect the mangling of sizeof/alignof.
2423 //
2424 // FIXME: This is wrong when mapping to the canonical type for a dependent
2425 // type discards instantiation-dependent portions of the type, such as for:
2426 //
2427 // template<typename T, int N> void f(T (&)[sizeof(N)]);
2428 // template<typename T> void f(T() throw(typename T::type)); (pre-C++17)
2429 //
2430 // It's also wrong in the opposite direction when instantiation-dependent,
2431 // canonically-equivalent types differ in some irrelevant portion of inner
2432 // type sugar. In such cases, we fail to form correct substitutions, eg:
2433 //
2434 // template<int N> void f(A<sizeof(N)> *, A<sizeof(N)> (*));
2435 //
2436 // We should instead canonicalize the non-instantiation-dependent parts,
2437 // regardless of whether the type as a whole is dependent or instantiation
2438 // dependent.
2439 if (!T->isInstantiationDependentType() || T->isDependentType())
2440 T = T.getCanonicalType();
2441 else {
2442 // Desugar any types that are purely sugar.
2443 do {
2444 // Don't desugar through template specialization types that aren't
2445 // type aliases. We need to mangle the template arguments as written.
2446 if (const TemplateSpecializationType *TST
2447 = dyn_cast<TemplateSpecializationType>(T))
2448 if (!TST->isTypeAlias())
2449 break;
2450
2451 QualType Desugared
2452 = T.getSingleStepDesugaredType(Context.getASTContext());
2453 if (Desugared == T)
2454 break;
2455
2456 T = Desugared;
2457 } while (true);
2458 }
2459 SplitQualType split = T.split();
2460 Qualifiers quals = split.Quals;
2461 const Type *ty = split.Ty;
2462
2463 bool isSubstitutable =
2464 isTypeSubstitutable(quals, ty, Context.getASTContext());
2465 if (isSubstitutable && mangleSubstitution(T))
2466 return;
2467
2468 // If we're mangling a qualified array type, push the qualifiers to
2469 // the element type.
2470 if (quals && isa<ArrayType>(T)) {
2471 ty = Context.getASTContext().getAsArrayType(T);
2472 quals = Qualifiers();
2473
2474 // Note that we don't update T: we want to add the
2475 // substitution at the original type.
2476 }
2477
2478 if (quals || ty->isDependentAddressSpaceType()) {
2479 if (const DependentAddressSpaceType *DAST =
2480 dyn_cast<DependentAddressSpaceType>(ty)) {
2481 SplitQualType splitDAST = DAST->getPointeeType().split();
2482 mangleQualifiers(splitDAST.Quals, DAST);
2483 mangleType(QualType(splitDAST.Ty, 0));
2484 } else {
2485 mangleQualifiers(quals);
2486
2487 // Recurse: even if the qualified type isn't yet substitutable,
2488 // the unqualified type might be.
2489 mangleType(QualType(ty, 0));
2490 }
2491 } else {
2492 switch (ty->getTypeClass()) {
2493#define ABSTRACT_TYPE(CLASS, PARENT)
2494#define NON_CANONICAL_TYPE(CLASS, PARENT) \
2495 case Type::CLASS: \
2496 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2496)
; \
2497 return;
2498#define TYPE(CLASS, PARENT) \
2499 case Type::CLASS: \
2500 mangleType(static_cast<const CLASS##Type*>(ty)); \
2501 break;
2502#include "clang/AST/TypeNodes.inc"
2503 }
2504 }
2505
2506 // Add the substitution.
2507 if (isSubstitutable)
2508 addSubstitution(T);
2509}
2510
2511void CXXNameMangler::mangleNameOrStandardSubstitution(const NamedDecl *ND) {
2512 if (!mangleStandardSubstitution(ND))
2513 mangleName(ND);
2514}
2515
2516void CXXNameMangler::mangleType(const BuiltinType *T) {
2517 // <type> ::= <builtin-type>
2518 // <builtin-type> ::= v # void
2519 // ::= w # wchar_t
2520 // ::= b # bool
2521 // ::= c # char
2522 // ::= a # signed char
2523 // ::= h # unsigned char
2524 // ::= s # short
2525 // ::= t # unsigned short
2526 // ::= i # int
2527 // ::= j # unsigned int
2528 // ::= l # long
2529 // ::= m # unsigned long
2530 // ::= x # long long, __int64
2531 // ::= y # unsigned long long, __int64
2532 // ::= n # __int128
2533 // ::= o # unsigned __int128
2534 // ::= f # float
2535 // ::= d # double
2536 // ::= e # long double, __float80
2537 // ::= g # __float128
2538 // UNSUPPORTED: ::= Dd # IEEE 754r decimal floating point (64 bits)
2539 // UNSUPPORTED: ::= De # IEEE 754r decimal floating point (128 bits)
2540 // UNSUPPORTED: ::= Df # IEEE 754r decimal floating point (32 bits)
2541 // ::= Dh # IEEE 754r half-precision floating point (16 bits)
2542 // ::= DF <number> _ # ISO/IEC TS 18661 binary floating point type _FloatN (N bits);
2543 // ::= Di # char32_t
2544 // ::= Ds # char16_t
2545 // ::= Dn # std::nullptr_t (i.e., decltype(nullptr))
2546 // ::= u <source-name> # vendor extended type
2547 std::string type_name;
2548 switch (T->getKind()) {
2549 case BuiltinType::Void:
2550 Out << 'v';
2551 break;
2552 case BuiltinType::Bool:
2553 Out << 'b';
2554 break;
2555 case BuiltinType::Char_U:
2556 case BuiltinType::Char_S:
2557 Out << 'c';
2558 break;
2559 case BuiltinType::UChar:
2560 Out << 'h';
2561 break;
2562 case BuiltinType::UShort:
2563 Out << 't';
2564 break;
2565 case BuiltinType::UInt:
2566 Out << 'j';
2567 break;
2568 case BuiltinType::ULong:
2569 Out << 'm';
2570 break;
2571 case BuiltinType::ULongLong:
2572 Out << 'y';
2573 break;
2574 case BuiltinType::UInt128:
2575 Out << 'o';
2576 break;
2577 case BuiltinType::SChar:
2578 Out << 'a';
2579 break;
2580 case BuiltinType::WChar_S:
2581 case BuiltinType::WChar_U:
2582 Out << 'w';
2583 break;
2584 case BuiltinType::Char8:
2585 Out << "Du";
2586 break;
2587 case BuiltinType::Char16:
2588 Out << "Ds";
2589 break;
2590 case BuiltinType::Char32:
2591 Out << "Di";
2592 break;
2593 case BuiltinType::Short:
2594 Out << 's';
2595 break;
2596 case BuiltinType::Int:
2597 Out << 'i';
2598 break;
2599 case BuiltinType::Long:
2600 Out << 'l';
2601 break;
2602 case BuiltinType::LongLong:
2603 Out << 'x';
2604 break;
2605 case BuiltinType::Int128:
2606 Out << 'n';
2607 break;
2608 case BuiltinType::Float16:
2609 Out << "DF16_";
2610 break;
2611 case BuiltinType::ShortAccum:
2612 case BuiltinType::Accum:
2613 case BuiltinType::LongAccum:
2614 case BuiltinType::UShortAccum:
2615 case BuiltinType::UAccum:
2616 case BuiltinType::ULongAccum:
2617 case BuiltinType::ShortFract:
2618 case BuiltinType::Fract:
2619 case BuiltinType::LongFract:
2620 case BuiltinType::UShortFract:
2621 case BuiltinType::UFract:
2622 case BuiltinType::ULongFract:
2623 case BuiltinType::SatShortAccum:
2624 case BuiltinType::SatAccum:
2625 case BuiltinType::SatLongAccum:
2626 case BuiltinType::SatUShortAccum:
2627 case BuiltinType::SatUAccum:
2628 case BuiltinType::SatULongAccum:
2629 case BuiltinType::SatShortFract:
2630 case BuiltinType::SatFract:
2631 case BuiltinType::SatLongFract:
2632 case BuiltinType::SatUShortFract:
2633 case BuiltinType::SatUFract:
2634 case BuiltinType::SatULongFract:
2635 llvm_unreachable("Fixed point types are disabled for c++")::llvm::llvm_unreachable_internal("Fixed point types are disabled for c++"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2635)
;
2636 case BuiltinType::Half:
2637 Out << "Dh";
2638 break;
2639 case BuiltinType::Float:
2640 Out << 'f';
2641 break;
2642 case BuiltinType::Double:
2643 Out << 'd';
2644 break;
2645 case BuiltinType::LongDouble: {
2646 const TargetInfo *TI = getASTContext().getLangOpts().OpenMP &&
2647 getASTContext().getLangOpts().OpenMPIsDevice
2648 ? getASTContext().getAuxTargetInfo()
2649 : &getASTContext().getTargetInfo();
2650 Out << TI->getLongDoubleMangling();
2651 break;
2652 }
2653 case BuiltinType::Float128: {
2654 const TargetInfo *TI = getASTContext().getLangOpts().OpenMP &&
2655 getASTContext().getLangOpts().OpenMPIsDevice
2656 ? getASTContext().getAuxTargetInfo()
2657 : &getASTContext().getTargetInfo();
2658 Out << TI->getFloat128Mangling();
2659 break;
2660 }
2661 case BuiltinType::NullPtr:
2662 Out << "Dn";
2663 break;
2664
2665#define BUILTIN_TYPE(Id, SingletonId)
2666#define PLACEHOLDER_TYPE(Id, SingletonId) \
2667 case BuiltinType::Id:
2668#include "clang/AST/BuiltinTypes.def"
2669 case BuiltinType::Dependent:
2670 if (!NullOut)
2671 llvm_unreachable("mangling a placeholder type")::llvm::llvm_unreachable_internal("mangling a placeholder type"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2671)
;
2672 break;
2673 case BuiltinType::ObjCId:
2674 Out << "11objc_object";
2675 break;
2676 case BuiltinType::ObjCClass:
2677 Out << "10objc_class";
2678 break;
2679 case BuiltinType::ObjCSel:
2680 Out << "13objc_selector";
2681 break;
2682#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
2683 case BuiltinType::Id: \
2684 type_name = "ocl_" #ImgType "_" #Suffix; \
2685 Out << type_name.size() << type_name; \
2686 break;
2687#include "clang/Basic/OpenCLImageTypes.def"
2688 case BuiltinType::OCLSampler:
2689 Out << "11ocl_sampler";
2690 break;
2691 case BuiltinType::OCLEvent:
2692 Out << "9ocl_event";
2693 break;
2694 case BuiltinType::OCLClkEvent:
2695 Out << "12ocl_clkevent";
2696 break;
2697 case BuiltinType::OCLQueue:
2698 Out << "9ocl_queue";
2699 break;
2700 case BuiltinType::OCLReserveID:
2701 Out << "13ocl_reserveid";
2702 break;
2703#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
2704 case BuiltinType::Id: \
2705 type_name = "ocl_" #ExtType; \
2706 Out << type_name.size() << type_name; \
2707 break;
2708#include "clang/Basic/OpenCLExtensionTypes.def"
2709 // The SVE types are effectively target-specific. The mangling scheme
2710 // is defined in the appendices to the Procedure Call Standard for the
2711 // Arm Architecture.
2712#define SVE_TYPE(Name, Id, SingletonId) \
2713 case BuiltinType::Id: \
2714 type_name = Name; \
2715 Out << 'u' << type_name.size() << type_name; \
2716 break;
2717#include "clang/Basic/AArch64SVEACLETypes.def"
2718 }
2719}
2720
2721StringRef CXXNameMangler::getCallingConvQualifierName(CallingConv CC) {
2722 switch (CC) {
2723 case CC_C:
2724 return "";
2725
2726 case CC_X86VectorCall:
2727 case CC_X86Pascal:
2728 case CC_X86RegCall:
2729 case CC_AAPCS:
2730 case CC_AAPCS_VFP:
2731 case CC_AArch64VectorCall:
2732 case CC_IntelOclBicc:
2733 case CC_SpirFunction:
2734 case CC_OpenCLKernel:
2735 case CC_PreserveMost:
2736 case CC_PreserveAll:
2737 // FIXME: we should be mangling all of the above.
2738 return "";
2739
2740 case CC_X86ThisCall:
2741 // FIXME: To match mingw GCC, thiscall should only be mangled in when it is
2742 // used explicitly. At this point, we don't have that much information in
2743 // the AST, since clang tends to bake the convention into the canonical
2744 // function type. thiscall only rarely used explicitly, so don't mangle it
2745 // for now.
2746 return "";
2747
2748 case CC_X86StdCall:
2749 return "stdcall";
2750 case CC_X86FastCall:
2751 return "fastcall";
2752 case CC_X86_64SysV:
2753 return "sysv_abi";
2754 case CC_Win64:
2755 return "ms_abi";
2756 case CC_Swift:
2757 return "swiftcall";
2758 }
2759 llvm_unreachable("bad calling convention")::llvm::llvm_unreachable_internal("bad calling convention", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2759)
;
2760}
2761
2762void CXXNameMangler::mangleExtFunctionInfo(const FunctionType *T) {
2763 // Fast path.
2764 if (T->getExtInfo() == FunctionType::ExtInfo())
2765 return;
2766
2767 // Vendor-specific qualifiers are emitted in reverse alphabetical order.
2768 // This will get more complicated in the future if we mangle other
2769 // things here; but for now, since we mangle ns_returns_retained as
2770 // a qualifier on the result type, we can get away with this:
2771 StringRef CCQualifier = getCallingConvQualifierName(T->getExtInfo().getCC());
2772 if (!CCQualifier.empty())
2773 mangleVendorQualifier(CCQualifier);
2774
2775 // FIXME: regparm
2776 // FIXME: noreturn
2777}
2778
2779void
2780CXXNameMangler::mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo PI) {
2781 // Vendor-specific qualifiers are emitted in reverse alphabetical order.
2782
2783 // Note that these are *not* substitution candidates. Demanglers might
2784 // have trouble with this if the parameter type is fully substituted.
2785
2786 switch (PI.getABI()) {
2787 case ParameterABI::Ordinary:
2788 break;
2789
2790 // All of these start with "swift", so they come before "ns_consumed".
2791 case ParameterABI::SwiftContext:
2792 case ParameterABI::SwiftErrorResult:
2793 case ParameterABI::SwiftIndirectResult:
2794 mangleVendorQualifier(getParameterABISpelling(PI.getABI()));
2795 break;
2796 }
2797
2798 if (PI.isConsumed())
2799 mangleVendorQualifier("ns_consumed");
2800
2801 if (PI.isNoEscape())
2802 mangleVendorQualifier("noescape");
2803}
2804
2805// <type> ::= <function-type>
2806// <function-type> ::= [<CV-qualifiers>] F [Y]
2807// <bare-function-type> [<ref-qualifier>] E
2808void CXXNameMangler::mangleType(const FunctionProtoType *T) {
2809 mangleExtFunctionInfo(T);
2810
2811 // Mangle CV-qualifiers, if present. These are 'this' qualifiers,
2812 // e.g. "const" in "int (A::*)() const".
2813 mangleQualifiers(T->getMethodQuals());
2814
2815 // Mangle instantiation-dependent exception-specification, if present,
2816 // per cxx-abi-dev proposal on 2016-10-11.
2817 if (T->hasInstantiationDependentExceptionSpec()) {
2818 if (isComputedNoexcept(T->getExceptionSpecType())) {
2819 Out << "DO";
2820 mangleExpression(T->getNoexceptExpr());
2821 Out << "E";
2822 } else {
2823 assert(T->getExceptionSpecType() == EST_Dynamic)((T->getExceptionSpecType() == EST_Dynamic) ? static_cast<
void> (0) : __assert_fail ("T->getExceptionSpecType() == EST_Dynamic"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2823, __PRETTY_FUNCTION__))
;
2824 Out << "Dw";
2825 for (auto ExceptTy : T->exceptions())
2826 mangleType(ExceptTy);
2827 Out << "E";
2828 }
2829 } else if (T->isNothrow()) {
2830 Out << "Do";
2831 }
2832
2833 Out << 'F';
2834
2835 // FIXME: We don't have enough information in the AST to produce the 'Y'
2836 // encoding for extern "C" function types.
2837 mangleBareFunctionType(T, /*MangleReturnType=*/true);
2838
2839 // Mangle the ref-qualifier, if present.
2840 mangleRefQualifier(T->getRefQualifier());
2841
2842 Out << 'E';
2843}
2844
2845void CXXNameMangler::mangleType(const FunctionNoProtoType *T) {
2846 // Function types without prototypes can arise when mangling a function type
2847 // within an overloadable function in C. We mangle these as the absence of any
2848 // parameter types (not even an empty parameter list).
2849 Out << 'F';
2850
2851 FunctionTypeDepthState saved = FunctionTypeDepth.push();
2852
2853 FunctionTypeDepth.enterResultType();
2854 mangleType(T->getReturnType());
2855 FunctionTypeDepth.leaveResultType();
2856
2857 FunctionTypeDepth.pop(saved);
2858 Out << 'E';
2859}
2860
2861void CXXNameMangler::mangleBareFunctionType(const FunctionProtoType *Proto,
2862 bool MangleReturnType,
2863 const FunctionDecl *FD) {
2864 // Record that we're in a function type. See mangleFunctionParam
2865 // for details on what we're trying to achieve here.
2866 FunctionTypeDepthState saved = FunctionTypeDepth.push();
2867
2868 // <bare-function-type> ::= <signature type>+
2869 if (MangleReturnType
6.1
'MangleReturnType' is false
) {
7
Taking false branch
2870 FunctionTypeDepth.enterResultType();
2871
2872 // Mangle ns_returns_retained as an order-sensitive qualifier here.
2873 if (Proto->getExtInfo().getProducesResult() && FD == nullptr)
2874 mangleVendorQualifier("ns_returns_retained");
2875
2876 // Mangle the return type without any direct ARC ownership qualifiers.
2877 QualType ReturnTy = Proto->getReturnType();
2878 if (ReturnTy.getObjCLifetime()) {
2879 auto SplitReturnTy = ReturnTy.split();
2880 SplitReturnTy.Quals.removeObjCLifetime();
2881 ReturnTy = getASTContext().getQualifiedType(SplitReturnTy);
2882 }
2883 mangleType(ReturnTy);
2884
2885 FunctionTypeDepth.leaveResultType();
2886 }
2887
2888 if (Proto->getNumParams() == 0 && !Proto->isVariadic()) {
8
Called C++ object pointer is null
2889 // <builtin-type> ::= v # void
2890 Out << 'v';
2891
2892 FunctionTypeDepth.pop(saved);
2893 return;
2894 }
2895
2896 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2896, __PRETTY_FUNCTION__))
;
2897 for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) {
2898 // Mangle extended parameter info as order-sensitive qualifiers here.
2899 if (Proto->hasExtParameterInfos() && FD == nullptr) {
2900 mangleExtParameterInfo(Proto->getExtParameterInfo(I));
2901 }
2902
2903 // Mangle the type.
2904 QualType ParamTy = Proto->getParamType(I);
2905 mangleType(Context.getASTContext().getSignatureParameterType(ParamTy));
2906
2907 if (FD) {
2908 if (auto *Attr = FD->getParamDecl(I)->getAttr<PassObjectSizeAttr>()) {
2909 // Attr can only take 1 character, so we can hardcode the length below.
2910 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 2910, __PRETTY_FUNCTION__))
;
2911 if (Attr->isDynamic())
2912 Out << "U25pass_dynamic_object_size" << Attr->getType();
2913 else
2914 Out << "U17pass_object_size" << Attr->getType();
2915 }
2916 }
2917 }
2918
2919 FunctionTypeDepth.pop(saved);
2920
2921 // <builtin-type> ::= z # ellipsis
2922 if (Proto->isVariadic())
2923 Out << 'z';
2924}
2925
2926// <type> ::= <class-enum-type>
2927// <class-enum-type> ::= <name>
2928void CXXNameMangler::mangleType(const UnresolvedUsingType *T) {
2929 mangleName(T->getDecl());
2930}
2931
2932// <type> ::= <class-enum-type>
2933// <class-enum-type> ::= <name>
2934void CXXNameMangler::mangleType(const EnumType *T) {
2935 mangleType(static_cast<const TagType*>(T));
2936}
2937void CXXNameMangler::mangleType(const RecordType *T) {
2938 mangleType(static_cast<const TagType*>(T));
2939}
2940void CXXNameMangler::mangleType(const TagType *T) {
2941 mangleName(T->getDecl());
2942}
2943
2944// <type> ::= <array-type>
2945// <array-type> ::= A <positive dimension number> _ <element type>
2946// ::= A [<dimension expression>] _ <element type>
2947void CXXNameMangler::mangleType(const ConstantArrayType *T) {
2948 Out << 'A' << T->getSize() << '_';
2949 mangleType(T->getElementType());
2950}
2951void CXXNameMangler::mangleType(const VariableArrayType *T) {
2952 Out << 'A';
2953 // decayed vla types (size 0) will just be skipped.
2954 if (T->getSizeExpr())
2955 mangleExpression(T->getSizeExpr());
2956 Out << '_';
2957 mangleType(T->getElementType());
2958}
2959void CXXNameMangler::mangleType(const DependentSizedArrayType *T) {
2960 Out << 'A';
2961 mangleExpression(T->getSizeExpr());
2962 Out << '_';
2963 mangleType(T->getElementType());
2964}
2965void CXXNameMangler::mangleType(const IncompleteArrayType *T) {
2966 Out << "A_";
2967 mangleType(T->getElementType());
2968}
2969
2970// <type> ::= <pointer-to-member-type>
2971// <pointer-to-member-type> ::= M <class type> <member type>
2972void CXXNameMangler::mangleType(const MemberPointerType *T) {
2973 Out << 'M';
2974 mangleType(QualType(T->getClass(), 0));
2975 QualType PointeeType = T->getPointeeType();
2976 if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) {
2977 mangleType(FPT);
2978
2979 // Itanium C++ ABI 5.1.8:
2980 //
2981 // The type of a non-static member function is considered to be different,
2982 // for the purposes of substitution, from the type of a namespace-scope or
2983 // static member function whose type appears similar. The types of two
2984 // non-static member functions are considered to be different, for the
2985 // purposes of substitution, if the functions are members of different
2986 // classes. In other words, for the purposes of substitution, the class of
2987 // which the function is a member is considered part of the type of
2988 // function.
2989
2990 // Given that we already substitute member function pointers as a
2991 // whole, the net effect of this rule is just to unconditionally
2992 // suppress substitution on the function type in a member pointer.
2993 // We increment the SeqID here to emulate adding an entry to the
2994 // substitution table.
2995 ++SeqID;
2996 } else
2997 mangleType(PointeeType);
2998}
2999
3000// <type> ::= <template-param>
3001void CXXNameMangler::mangleType(const TemplateTypeParmType *T) {
3002 mangleTemplateParameter(T->getDepth(), T->getIndex());
3003}
3004
3005// <type> ::= <template-param>
3006void CXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T) {
3007 // FIXME: not clear how to mangle this!
3008 // template <class T...> class A {
3009 // template <class U...> void foo(T(*)(U) x...);
3010 // };
3011 Out << "_SUBSTPACK_";
3012}
3013
3014// <type> ::= P <type> # pointer-to
3015void CXXNameMangler::mangleType(const PointerType *T) {
3016 Out << 'P';
3017 mangleType(T->getPointeeType());
3018}
3019void CXXNameMangler::mangleType(const ObjCObjectPointerType *T) {
3020 Out << 'P';
3021 mangleType(T->getPointeeType());
3022}
3023
3024// <type> ::= R <type> # reference-to
3025void CXXNameMangler::mangleType(const LValueReferenceType *T) {
3026 Out << 'R';
3027 mangleType(T->getPointeeType());
3028}
3029
3030// <type> ::= O <type> # rvalue reference-to (C++0x)
3031void CXXNameMangler::mangleType(const RValueReferenceType *T) {
3032 Out << 'O';
3033 mangleType(T->getPointeeType());
3034}
3035
3036// <type> ::= C <type> # complex pair (C 2000)
3037void CXXNameMangler::mangleType(const ComplexType *T) {
3038 Out << 'C';
3039 mangleType(T->getElementType());
3040}
3041
3042// ARM's ABI for Neon vector types specifies that they should be mangled as
3043// if they are structs (to match ARM's initial implementation). The
3044// vector type must be one of the special types predefined by ARM.
3045void CXXNameMangler::mangleNeonVectorType(const VectorType *T) {
3046 QualType EltType = T->getElementType();
3047 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3047, __PRETTY_FUNCTION__))
;
3048 const char *EltName = nullptr;
3049 if (T->getVectorKind() == VectorType::NeonPolyVector) {
3050 switch (cast<BuiltinType>(EltType)->getKind()) {
3051 case BuiltinType::SChar:
3052 case BuiltinType::UChar:
3053 EltName = "poly8_t";
3054 break;
3055 case BuiltinType::Short:
3056 case BuiltinType::UShort:
3057 EltName = "poly16_t";
3058 break;
3059 case BuiltinType::ULongLong:
3060 EltName = "poly64_t";
3061 break;
3062 default: llvm_unreachable("unexpected Neon polynomial vector element type")::llvm::llvm_unreachable_internal("unexpected Neon polynomial vector element type"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3062)
;
3063 }
3064 } else {
3065 switch (cast<BuiltinType>(EltType)->getKind()) {
3066 case BuiltinType::SChar: EltName = "int8_t"; break;
3067 case BuiltinType::UChar: EltName = "uint8_t"; break;
3068 case BuiltinType::Short: EltName = "int16_t"; break;
3069 case BuiltinType::UShort: EltName = "uint16_t"; break;
3070 case BuiltinType::Int: EltName = "int32_t"; break;
3071 case BuiltinType::UInt: EltName = "uint32_t"; break;
3072 case BuiltinType::LongLong: EltName = "int64_t"; break;
3073 case BuiltinType::ULongLong: EltName = "uint64_t"; break;
3074 case BuiltinType::Double: EltName = "float64_t"; break;
3075 case BuiltinType::Float: EltName = "float32_t"; break;
3076 case BuiltinType::Half: EltName = "float16_t";break;
3077 default:
3078 llvm_unreachable("unexpected Neon vector element type")::llvm::llvm_unreachable_internal("unexpected Neon vector element type"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3078)
;
3079 }
3080 }
3081 const char *BaseName = nullptr;
3082 unsigned BitSize = (T->getNumElements() *
3083 getASTContext().getTypeSize(EltType));
3084 if (BitSize == 64)
3085 BaseName = "__simd64_";
3086 else {
3087 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3087, __PRETTY_FUNCTION__))
;
3088 BaseName = "__simd128_";
3089 }
3090 Out << strlen(BaseName) + strlen(EltName);
3091 Out << BaseName << EltName;
3092}
3093
3094void CXXNameMangler::mangleNeonVectorType(const DependentVectorType *T) {
3095 DiagnosticsEngine &Diags = Context.getDiags();
3096 unsigned DiagID = Diags.getCustomDiagID(
3097 DiagnosticsEngine::Error,
3098 "cannot mangle this dependent neon vector type yet");
3099 Diags.Report(T->getAttributeLoc(), DiagID);
3100}
3101
3102static StringRef mangleAArch64VectorBase(const BuiltinType *EltType) {
3103 switch (EltType->getKind()) {
3104 case BuiltinType::SChar:
3105 return "Int8";
3106 case BuiltinType::Short:
3107 return "Int16";
3108 case BuiltinType::Int:
3109 return "Int32";
3110 case BuiltinType::Long:
3111 case BuiltinType::LongLong:
3112 return "Int64";
3113 case BuiltinType::UChar:
3114 return "Uint8";
3115 case BuiltinType::UShort:
3116 return "Uint16";
3117 case BuiltinType::UInt:
3118 return "Uint32";
3119 case BuiltinType::ULong:
3120 case BuiltinType::ULongLong:
3121 return "Uint64";
3122 case BuiltinType::Half:
3123 return "Float16";
3124 case BuiltinType::Float:
3125 return "Float32";
3126 case BuiltinType::Double:
3127 return "Float64";
3128 default:
3129 llvm_unreachable("Unexpected vector element base type")::llvm::llvm_unreachable_internal("Unexpected vector element base type"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3129)
;
3130 }
3131}
3132
3133// AArch64's ABI for Neon vector types specifies that they should be mangled as
3134// the equivalent internal name. The vector type must be one of the special
3135// types predefined by ARM.
3136void CXXNameMangler::mangleAArch64NeonVectorType(const VectorType *T) {
3137 QualType EltType = T->getElementType();
3138 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3138, __PRETTY_FUNCTION__))
;
3139 unsigned BitSize =
3140 (T->getNumElements() * getASTContext().getTypeSize(EltType));
3141 (void)BitSize; // Silence warning.
3142
3143 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3144, __PRETTY_FUNCTION__))
3144 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3144, __PRETTY_FUNCTION__))
;
3145
3146 StringRef EltName;
3147 if (T->getVectorKind() == VectorType::NeonPolyVector) {
3148 switch (cast<BuiltinType>(EltType)->getKind()) {
3149 case BuiltinType::UChar:
3150 EltName = "Poly8";
3151 break;
3152 case BuiltinType::UShort:
3153 EltName = "Poly16";
3154 break;
3155 case BuiltinType::ULong:
3156 case BuiltinType::ULongLong:
3157 EltName = "Poly64";
3158 break;
3159 default:
3160 llvm_unreachable("unexpected Neon polynomial vector element type")::llvm::llvm_unreachable_internal("unexpected Neon polynomial vector element type"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3160)
;
3161 }
3162 } else
3163 EltName = mangleAArch64VectorBase(cast<BuiltinType>(EltType));
3164
3165 std::string TypeName =
3166 ("__" + EltName + "x" + Twine(T->getNumElements()) + "_t").str();
3167 Out << TypeName.length() << TypeName;
3168}
3169void CXXNameMangler::mangleAArch64NeonVectorType(const DependentVectorType *T) {
3170 DiagnosticsEngine &Diags = Context.getDiags();
3171 unsigned DiagID = Diags.getCustomDiagID(
3172 DiagnosticsEngine::Error,
3173 "cannot mangle this dependent neon vector type yet");
3174 Diags.Report(T->getAttributeLoc(), DiagID);
3175}
3176
3177// GNU extension: vector types
3178// <type> ::= <vector-type>
3179// <vector-type> ::= Dv <positive dimension number> _
3180// <extended element type>
3181// ::= Dv [<dimension expression>] _ <element type>
3182// <extended element type> ::= <element type>
3183// ::= p # AltiVec vector pixel
3184// ::= b # Altivec vector bool
3185void CXXNameMangler::mangleType(const VectorType *T) {
3186 if ((T->getVectorKind() == VectorType::NeonVector ||
3187 T->getVectorKind() == VectorType::NeonPolyVector)) {
3188 llvm::Triple Target = getASTContext().getTargetInfo().getTriple();
3189 llvm::Triple::ArchType Arch =
3190 getASTContext().getTargetInfo().getTriple().getArch();
3191 if ((Arch == llvm::Triple::aarch64 ||
3192 Arch == llvm::Triple::aarch64_be) && !Target.isOSDarwin())
3193 mangleAArch64NeonVectorType(T);
3194 else
3195 mangleNeonVectorType(T);
3196 return;
3197 }
3198 Out << "Dv" << T->getNumElements() << '_';
3199 if (T->getVectorKind() == VectorType::AltiVecPixel)
3200 Out << 'p';
3201 else if (T->getVectorKind() == VectorType::AltiVecBool)
3202 Out << 'b';
3203 else
3204 mangleType(T->getElementType());
3205}
3206
3207void CXXNameMangler::mangleType(const DependentVectorType *T) {
3208 if ((T->getVectorKind() == VectorType::NeonVector ||
3209 T->getVectorKind() == VectorType::NeonPolyVector)) {
3210 llvm::Triple Target = getASTContext().getTargetInfo().getTriple();
3211 llvm::Triple::ArchType Arch =
3212 getASTContext().getTargetInfo().getTriple().getArch();
3213 if ((Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_be) &&
3214 !Target.isOSDarwin())
3215 mangleAArch64NeonVectorType(T);
3216 else
3217 mangleNeonVectorType(T);
3218 return;
3219 }
3220
3221 Out << "Dv";
3222 mangleExpression(T->getSizeExpr());
3223 Out << '_';
3224 if (T->getVectorKind() == VectorType::AltiVecPixel)
3225 Out << 'p';
3226 else if (T->getVectorKind() == VectorType::AltiVecBool)
3227 Out << 'b';
3228 else
3229 mangleType(T->getElementType());
3230}
3231
3232void CXXNameMangler::mangleType(const ExtVectorType *T) {
3233 mangleType(static_cast<const VectorType*>(T));
3234}
3235void CXXNameMangler::mangleType(const DependentSizedExtVectorType *T) {
3236 Out << "Dv";
3237 mangleExpression(T->getSizeExpr());
3238 Out << '_';
3239 mangleType(T->getElementType());
3240}
3241
3242void CXXNameMangler::mangleType(const DependentAddressSpaceType *T) {
3243 SplitQualType split = T->getPointeeType().split();
3244 mangleQualifiers(split.Quals, T);
3245 mangleType(QualType(split.Ty, 0));
3246}
3247
3248void CXXNameMangler::mangleType(const PackExpansionType *T) {
3249 // <type> ::= Dp <type> # pack expansion (C++0x)
3250 Out << "Dp";
3251 mangleType(T->getPattern());
3252}
3253
3254void CXXNameMangler::mangleType(const ObjCInterfaceType *T) {
3255 mangleSourceName(T->getDecl()->getIdentifier());
3256}
3257
3258void CXXNameMangler::mangleType(const ObjCObjectType *T) {
3259 // Treat __kindof as a vendor extended type qualifier.
3260 if (T->isKindOfType())
3261 Out << "U8__kindof";
3262
3263 if (!T->qual_empty()) {
3264 // Mangle protocol qualifiers.
3265 SmallString<64> QualStr;
3266 llvm::raw_svector_ostream QualOS(QualStr);
3267 QualOS << "objcproto";
3268 for (const auto *I : T->quals()) {
3269 StringRef name = I->getName();
3270 QualOS << name.size() << name;
3271 }
3272 Out << 'U' << QualStr.size() << QualStr;
3273 }
3274
3275 mangleType(T->getBaseType());
3276
3277 if (T->isSpecialized()) {
3278 // Mangle type arguments as I <type>+ E
3279 Out << 'I';
3280 for (auto typeArg : T->getTypeArgs())
3281 mangleType(typeArg);
3282 Out << 'E';
3283 }
3284}
3285
3286void CXXNameMangler::mangleType(const BlockPointerType *T) {
3287 Out << "U13block_pointer";
3288 mangleType(T->getPointeeType());
3289}
3290
3291void CXXNameMangler::mangleType(const InjectedClassNameType *T) {
3292 // Mangle injected class name types as if the user had written the
3293 // specialization out fully. It may not actually be possible to see
3294 // this mangling, though.
3295 mangleType(T->getInjectedSpecializationType());
3296}
3297
3298void CXXNameMangler::mangleType(const TemplateSpecializationType *T) {
3299 if (TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl()) {
3300 mangleTemplateName(TD, T->getArgs(), T->getNumArgs());
3301 } else {
3302 if (mangleSubstitution(QualType(T, 0)))
3303 return;
3304
3305 mangleTemplatePrefix(T->getTemplateName());
3306
3307 // FIXME: GCC does not appear to mangle the template arguments when
3308 // the template in question is a dependent template name. Should we
3309 // emulate that badness?
3310 mangleTemplateArgs(T->getArgs(), T->getNumArgs());
3311 addSubstitution(QualType(T, 0));
3312 }
3313}
3314
3315void CXXNameMangler::mangleType(const DependentNameType *T) {
3316 // Proposal by cxx-abi-dev, 2014-03-26
3317 // <class-enum-type> ::= <name> # non-dependent or dependent type name or
3318 // # dependent elaborated type specifier using
3319 // # 'typename'
3320 // ::= Ts <name> # dependent elaborated type specifier using
3321 // # 'struct' or 'class'
3322 // ::= Tu <name> # dependent elaborated type specifier using
3323 // # 'union'
3324 // ::= Te <name> # dependent elaborated type specifier using
3325 // # 'enum'
3326 switch (T->getKeyword()) {
3327 case ETK_None:
3328 case ETK_Typename:
3329 break;
3330 case ETK_Struct:
3331 case ETK_Class:
3332 case ETK_Interface:
3333 Out << "Ts";
3334 break;
3335 case ETK_Union:
3336 Out << "Tu";
3337 break;
3338 case ETK_Enum:
3339 Out << "Te";
3340 break;
3341 }
3342 // Typename types are always nested
3343 Out << 'N';
3344 manglePrefix(T->getQualifier());
3345 mangleSourceName(T->getIdentifier());
3346 Out << 'E';
3347}
3348
3349void CXXNameMangler::mangleType(const DependentTemplateSpecializationType *T) {
3350 // Dependently-scoped template types are nested if they have a prefix.
3351 Out << 'N';
3352
3353 // TODO: avoid making this TemplateName.
3354 TemplateName Prefix =
3355 getASTContext().getDependentTemplateName(T->getQualifier(),
3356 T->getIdentifier());
3357 mangleTemplatePrefix(Prefix);
3358
3359 // FIXME: GCC does not appear to mangle the template arguments when
3360 // the template in question is a dependent template name. Should we
3361 // emulate that badness?
3362 mangleTemplateArgs(T->getArgs(), T->getNumArgs());
3363 Out << 'E';
3364}
3365
3366void CXXNameMangler::mangleType(const TypeOfType *T) {
3367 // FIXME: this is pretty unsatisfactory, but there isn't an obvious
3368 // "extension with parameters" mangling.
3369 Out << "u6typeof";
3370}
3371
3372void CXXNameMangler::mangleType(const TypeOfExprType *T) {
3373 // FIXME: this is pretty unsatisfactory, but there isn't an obvious
3374 // "extension with parameters" mangling.
3375 Out << "u6typeof";
3376}
3377
3378void CXXNameMangler::mangleType(const DecltypeType *T) {
3379 Expr *E = T->getUnderlyingExpr();
3380
3381 // type ::= Dt <expression> E # decltype of an id-expression
3382 // # or class member access
3383 // ::= DT <expression> E # decltype of an expression
3384
3385 // This purports to be an exhaustive list of id-expressions and
3386 // class member accesses. Note that we do not ignore parentheses;
3387 // parentheses change the semantics of decltype for these
3388 // expressions (and cause the mangler to use the other form).
3389 if (isa<DeclRefExpr>(E) ||
3390 isa<MemberExpr>(E) ||
3391 isa<UnresolvedLookupExpr>(E) ||
3392 isa<DependentScopeDeclRefExpr>(E) ||
3393 isa<CXXDependentScopeMemberExpr>(E) ||
3394 isa<UnresolvedMemberExpr>(E))
3395 Out << "Dt";
3396 else
3397 Out << "DT";
3398 mangleExpression(E);
3399 Out << 'E';
3400}
3401
3402void CXXNameMangler::mangleType(const UnaryTransformType *T) {
3403 // If this is dependent, we need to record that. If not, we simply
3404 // mangle it as the underlying type since they are equivalent.
3405 if (T->isDependentType()) {
3406 Out << 'U';
3407
3408 switch (T->getUTTKind()) {
3409 case UnaryTransformType::EnumUnderlyingType:
3410 Out << "3eut";
3411 break;
3412 }
3413 }
3414
3415 mangleType(T->getBaseType());
3416}
3417
3418void CXXNameMangler::mangleType(const AutoType *T) {
3419 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3420, __PRETTY_FUNCTION__))
3420 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3420, __PRETTY_FUNCTION__))
;
3421 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3422, __PRETTY_FUNCTION__))
3422 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3422, __PRETTY_FUNCTION__))
;
3423 // <builtin-type> ::= Da # auto
3424 // ::= Dc # decltype(auto)
3425 Out << (T->isDecltypeAuto() ? "Dc" : "Da");
3426}
3427
3428void CXXNameMangler::mangleType(const DeducedTemplateSpecializationType *T) {
3429 // FIXME: This is not the right mangling. We also need to include a scope
3430 // here in some cases.
3431 QualType D = T->getDeducedType();
3432 if (D.isNull())
3433 mangleUnscopedTemplateName(T->getTemplateName(), nullptr);
3434 else
3435 mangleType(D);
3436}
3437
3438void CXXNameMangler::mangleType(const AtomicType *T) {
3439 // <type> ::= U <source-name> <type> # vendor extended type qualifier
3440 // (Until there's a standardized mangling...)
3441 Out << "U7_Atomic";
3442 mangleType(T->getValueType());
3443}
3444
3445void CXXNameMangler::mangleType(const PipeType *T) {
3446 // Pipe type mangling rules are described in SPIR 2.0 specification
3447 // A.1 Data types and A.3 Summary of changes
3448 // <type> ::= 8ocl_pipe
3449 Out << "8ocl_pipe";
3450}
3451
3452void CXXNameMangler::mangleIntegerLiteral(QualType T,
3453 const llvm::APSInt &Value) {
3454 // <expr-primary> ::= L <type> <value number> E # integer literal
3455 Out << 'L';
3456
3457 mangleType(T);
3458 if (T->isBooleanType()) {
3459 // Boolean values are encoded as 0/1.
3460 Out << (Value.getBoolValue() ? '1' : '0');
3461 } else {
3462 mangleNumber(Value);
3463 }
3464 Out << 'E';
3465
3466}
3467
3468void CXXNameMangler::mangleMemberExprBase(const Expr *Base, bool IsArrow) {
3469 // Ignore member expressions involving anonymous unions.
3470 while (const auto *RT = Base->getType()->getAs<RecordType>()) {
3471 if (!RT->getDecl()->isAnonymousStructOrUnion())
3472 break;
3473 const auto *ME = dyn_cast<MemberExpr>(Base);
3474 if (!ME)
3475 break;
3476 Base = ME->getBase();
3477 IsArrow = ME->isArrow();
3478 }
3479
3480 if (Base->isImplicitCXXThis()) {
3481 // Note: GCC mangles member expressions to the implicit 'this' as
3482 // *this., whereas we represent them as this->. The Itanium C++ ABI
3483 // does not specify anything here, so we follow GCC.
3484 Out << "dtdefpT";
3485 } else {
3486 Out << (IsArrow ? "pt" : "dt");
3487 mangleExpression(Base);
3488 }
3489}
3490
3491/// Mangles a member expression.
3492void CXXNameMangler::mangleMemberExpr(const Expr *base,
3493 bool isArrow,
3494 NestedNameSpecifier *qualifier,
3495 NamedDecl *firstQualifierLookup,
3496 DeclarationName member,
3497 const TemplateArgumentLoc *TemplateArgs,
3498 unsigned NumTemplateArgs,
3499 unsigned arity) {
3500 // <expression> ::= dt <expression> <unresolved-name>
3501 // ::= pt <expression> <unresolved-name>
3502 if (base)
3503 mangleMemberExprBase(base, isArrow);
3504 mangleUnresolvedName(qualifier, member, TemplateArgs, NumTemplateArgs, arity);
3505}
3506
3507/// Look at the callee of the given call expression and determine if
3508/// it's a parenthesized id-expression which would have triggered ADL
3509/// otherwise.
3510static bool isParenthesizedADLCallee(const CallExpr *call) {
3511 const Expr *callee = call->getCallee();
3512 const Expr *fn = callee->IgnoreParens();
3513
3514 // Must be parenthesized. IgnoreParens() skips __extension__ nodes,
3515 // too, but for those to appear in the callee, it would have to be
3516 // parenthesized.
3517 if (callee == fn) return false;
3518
3519 // Must be an unresolved lookup.
3520 const UnresolvedLookupExpr *lookup = dyn_cast<UnresolvedLookupExpr>(fn);
3521 if (!lookup) return false;
3522
3523 assert(!lookup->requiresADL())((!lookup->requiresADL()) ? static_cast<void> (0) : __assert_fail
("!lookup->requiresADL()", "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3523, __PRETTY_FUNCTION__))
;
3524
3525 // Must be an unqualified lookup.
3526 if (lookup->getQualifier()) return false;
3527
3528 // Must not have found a class member. Note that if one is a class
3529 // member, they're all class members.
3530 if (lookup->getNumDecls() > 0 &&
3531 (*lookup->decls_begin())->isCXXClassMember())
3532 return false;
3533
3534 // Otherwise, ADL would have been triggered.
3535 return true;
3536}
3537
3538void CXXNameMangler::mangleCastExpression(const Expr *E, StringRef CastEncoding) {
3539 const ExplicitCastExpr *ECE = cast<ExplicitCastExpr>(E);
3540 Out << CastEncoding;
3541 mangleType(ECE->getType());
3542 mangleExpression(ECE->getSubExpr());
3543}
3544
3545void CXXNameMangler::mangleInitListElements(const InitListExpr *InitList) {
3546 if (auto *Syntactic = InitList->getSyntacticForm())
3547 InitList = Syntactic;
3548 for (unsigned i = 0, e = InitList->getNumInits(); i != e; ++i)
3549 mangleExpression(InitList->getInit(i));
3550}
3551
3552void CXXNameMangler::mangleDeclRefExpr(const NamedDecl *D) {
3553 switch (D->getKind()) {
3554 default:
3555 // <expr-primary> ::= L <mangled-name> E # external name
3556 Out << 'L';
3557 mangle(D);
3558 Out << 'E';
3559 break;
3560
3561 case Decl::ParmVar:
3562 mangleFunctionParam(cast<ParmVarDecl>(D));
3563 break;
3564
3565 case Decl::EnumConstant: {
3566 const EnumConstantDecl *ED = cast<EnumConstantDecl>(D);
3567 mangleIntegerLiteral(ED->getType(), ED->getInitVal());
3568 break;
3569 }
3570
3571 case Decl::NonTypeTemplateParm:
3572 const NonTypeTemplateParmDecl *PD = cast<NonTypeTemplateParmDecl>(D);
3573 mangleTemplateParameter(PD->getDepth(), PD->getIndex());
3574 break;
3575 }
3576}
3577
3578void CXXNameMangler::mangleExpression(const Expr *E, unsigned Arity) {
3579 // <expression> ::= <unary operator-name> <expression>
3580 // ::= <binary operator-name> <expression> <expression>
3581 // ::= <trinary operator-name> <expression> <expression> <expression>
3582 // ::= cv <type> expression # conversion with one argument
3583 // ::= cv <type> _ <expression>* E # conversion with a different number of arguments
3584 // ::= dc <type> <expression> # dynamic_cast<type> (expression)
3585 // ::= sc <type> <expression> # static_cast<type> (expression)
3586 // ::= cc <type> <expression> # const_cast<type> (expression)
3587 // ::= rc <type> <expression> # reinterpret_cast<type> (expression)
3588 // ::= st <type> # sizeof (a type)
3589 // ::= at <type> # alignof (a type)
3590 // ::= <template-param>
3591 // ::= <function-param>
3592 // ::= sr <type> <unqualified-name> # dependent name
3593 // ::= sr <type> <unqualified-name> <template-args> # dependent template-id
3594 // ::= ds <expression> <expression> # expr.*expr
3595 // ::= sZ <template-param> # size of a parameter pack
3596 // ::= sZ <function-param> # size of a function parameter pack
3597 // ::= <expr-primary>
3598 // <expr-primary> ::= L <type> <value number> E # integer literal
3599 // ::= L <type <value float> E # floating literal
3600 // ::= L <mangled-name> E # external name
3601 // ::= fpT # 'this' expression
3602 QualType ImplicitlyConvertedToType;
3603
3604recurse:
3605 switch (E->getStmtClass()) {
3606 case Expr::NoStmtClass:
3607#define ABSTRACT_STMT(Type)
3608#define EXPR(Type, Base)
3609#define STMT(Type, Base) \
3610 case Expr::Type##Class:
3611#include "clang/AST/StmtNodes.inc"
3612 // fallthrough
3613
3614 // These all can only appear in local or variable-initialization
3615 // contexts and so should never appear in a mangling.
3616 case Expr::AddrLabelExprClass:
3617 case Expr::DesignatedInitUpdateExprClass:
3618 case Expr::ImplicitValueInitExprClass:
3619 case Expr::ArrayInitLoopExprClass:
3620 case Expr::ArrayInitIndexExprClass:
3621 case Expr::NoInitExprClass:
3622 case Expr::ParenListExprClass:
3623 case Expr::LambdaExprClass:
3624 case Expr::MSPropertyRefExprClass:
3625 case Expr::MSPropertySubscriptExprClass:
3626 case Expr::TypoExprClass: // This should no longer exist in the AST by now.
3627 case Expr::OMPArraySectionExprClass:
3628 case Expr::CXXInheritedCtorInitExprClass:
3629 llvm_unreachable("unexpected statement kind")::llvm::llvm_unreachable_internal("unexpected statement kind"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3629)
;
3630
3631 case Expr::ConstantExprClass:
3632 E = cast<ConstantExpr>(E)->getSubExpr();
3633 goto recurse;
3634
3635 // FIXME: invent manglings for all these.
3636 case Expr::BlockExprClass:
3637 case Expr::ChooseExprClass:
3638 case Expr::CompoundLiteralExprClass:
3639 case Expr::ExtVectorElementExprClass:
3640 case Expr::GenericSelectionExprClass:
3641 case Expr::ObjCEncodeExprClass:
3642 case Expr::ObjCIsaExprClass:
3643 case Expr::ObjCIvarRefExprClass:
3644 case Expr::ObjCMessageExprClass:
3645 case Expr::ObjCPropertyRefExprClass:
3646 case Expr::ObjCProtocolExprClass:
3647 case Expr::ObjCSelectorExprClass:
3648 case Expr::ObjCStringLiteralClass:
3649 case Expr::ObjCBoxedExprClass:
3650 case Expr::ObjCArrayLiteralClass:
3651 case Expr::ObjCDictionaryLiteralClass:
3652 case Expr::ObjCSubscriptRefExprClass:
3653 case Expr::ObjCIndirectCopyRestoreExprClass:
3654 case Expr::ObjCAvailabilityCheckExprClass:
3655 case Expr::OffsetOfExprClass:
3656 case Expr::PredefinedExprClass:
3657 case Expr::ShuffleVectorExprClass:
3658 case Expr::ConvertVectorExprClass:
3659 case Expr::StmtExprClass:
3660 case Expr::TypeTraitExprClass:
3661 case Expr::ArrayTypeTraitExprClass:
3662 case Expr::ExpressionTraitExprClass:
3663 case Expr::VAArgExprClass:
3664 case Expr::CUDAKernelCallExprClass:
3665 case Expr::AsTypeExprClass:
3666 case Expr::PseudoObjectExprClass:
3667 case Expr::AtomicExprClass:
3668 case Expr::SourceLocExprClass:
3669 case Expr::FixedPointLiteralClass:
3670 case Expr::BuiltinBitCastExprClass:
3671 {
3672 if (!NullOut) {
3673 // As bad as this diagnostic is, it's better than crashing.
3674 DiagnosticsEngine &Diags = Context.getDiags();
3675 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
3676 "cannot yet mangle expression type %0");
3677 Diags.Report(E->getExprLoc(), DiagID)
3678 << E->getStmtClassName() << E->getSourceRange();
3679 }
3680 break;
3681 }
3682
3683 case Expr::CXXUuidofExprClass: {
3684 const CXXUuidofExpr *UE = cast<CXXUuidofExpr>(E);
3685 if (UE->isTypeOperand()) {
3686 QualType UuidT = UE->getTypeOperand(Context.getASTContext());
3687 Out << "u8__uuidoft";
3688 mangleType(UuidT);
3689 } else {
3690 Expr *UuidExp = UE->getExprOperand();
3691 Out << "u8__uuidofz";
3692 mangleExpression(UuidExp, Arity);
3693 }
3694 break;
3695 }
3696
3697 // Even gcc-4.5 doesn't mangle this.
3698 case Expr::BinaryConditionalOperatorClass: {
3699 DiagnosticsEngine &Diags = Context.getDiags();
3700 unsigned DiagID =
3701 Diags.getCustomDiagID(DiagnosticsEngine::Error,
3702 "?: operator with omitted middle operand cannot be mangled");
3703 Diags.Report(E->getExprLoc(), DiagID)
3704 << E->getStmtClassName() << E->getSourceRange();
3705 break;
3706 }
3707
3708 // These are used for internal purposes and cannot be meaningfully mangled.
3709 case Expr::OpaqueValueExprClass:
3710 llvm_unreachable("cannot mangle opaque value; mangling wrong thing?")::llvm::llvm_unreachable_internal("cannot mangle opaque value; mangling wrong thing?"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3710)
;
3711
3712 case Expr::InitListExprClass: {
3713 Out << "il";
3714 mangleInitListElements(cast<InitListExpr>(E));
3715 Out << "E";
3716 break;
3717 }
3718
3719 case Expr::DesignatedInitExprClass: {
3720 auto *DIE = cast<DesignatedInitExpr>(E);
3721 for (const auto &Designator : DIE->designators()) {
3722 if (Designator.isFieldDesignator()) {
3723 Out << "di";
3724 mangleSourceName(Designator.getFieldName());
3725 } else if (Designator.isArrayDesignator()) {
3726 Out << "dx";
3727 mangleExpression(DIE->getArrayIndex(Designator));
3728 } else {
3729 assert(Designator.isArrayRangeDesignator() &&((Designator.isArrayRangeDesignator() && "unknown designator kind"
) ? static_cast<void> (0) : __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3730, __PRETTY_FUNCTION__))
3730 "unknown designator kind")((Designator.isArrayRangeDesignator() && "unknown designator kind"
) ? static_cast<void> (0) : __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3730, __PRETTY_FUNCTION__))
;
3731 Out << "dX";
3732 mangleExpression(DIE->getArrayRangeStart(Designator));
3733 mangleExpression(DIE->getArrayRangeEnd(Designator));
3734 }
3735 }
3736 mangleExpression(DIE->getInit());
3737 break;
3738 }
3739
3740 case Expr::CXXDefaultArgExprClass:
3741 mangleExpression(cast<CXXDefaultArgExpr>(E)->getExpr(), Arity);
3742 break;
3743
3744 case Expr::CXXDefaultInitExprClass:
3745 mangleExpression(cast<CXXDefaultInitExpr>(E)->getExpr(), Arity);
3746 break;
3747
3748 case Expr::CXXStdInitializerListExprClass:
3749 mangleExpression(cast<CXXStdInitializerListExpr>(E)->getSubExpr(), Arity);
3750 break;
3751
3752 case Expr::SubstNonTypeTemplateParmExprClass:
3753 mangleExpression(cast<SubstNonTypeTemplateParmExpr>(E)->getReplacement(),
3754 Arity);
3755 break;
3756
3757 case Expr::UserDefinedLiteralClass:
3758 // We follow g++'s approach of mangling a UDL as a call to the literal
3759 // operator.
3760 case Expr::CXXMemberCallExprClass: // fallthrough
3761 case Expr::CallExprClass: {
3762 const CallExpr *CE = cast<CallExpr>(E);
3763
3764 // <expression> ::= cp <simple-id> <expression>* E
3765 // We use this mangling only when the call would use ADL except
3766 // for being parenthesized. Per discussion with David
3767 // Vandervoorde, 2011.04.25.
3768 if (isParenthesizedADLCallee(CE)) {
3769 Out << "cp";
3770 // The callee here is a parenthesized UnresolvedLookupExpr with
3771 // no qualifier and should always get mangled as a <simple-id>
3772 // anyway.
3773
3774 // <expression> ::= cl <expression>* E
3775 } else {
3776 Out << "cl";
3777 }
3778
3779 unsigned CallArity = CE->getNumArgs();
3780 for (const Expr *Arg : CE->arguments())
3781 if (isa<PackExpansionExpr>(Arg))
3782 CallArity = UnknownArity;
3783
3784 mangleExpression(CE->getCallee(), CallArity);
3785 for (const Expr *Arg : CE->arguments())
3786 mangleExpression(Arg);
3787 Out << 'E';
3788 break;
3789 }
3790
3791 case Expr::CXXNewExprClass: {
3792 const CXXNewExpr *New = cast<CXXNewExpr>(E);
3793 if (New->isGlobalNew()) Out << "gs";
3794 Out << (New->isArray() ? "na" : "nw");
3795 for (CXXNewExpr::const_arg_iterator I = New->placement_arg_begin(),
3796 E = New->placement_arg_end(); I != E; ++I)
3797 mangleExpression(*I);
3798 Out << '_';
3799 mangleType(New->getAllocatedType());
3800 if (New->hasInitializer()) {
3801 if (New->getInitializationStyle() == CXXNewExpr::ListInit)
3802 Out << "il";
3803 else
3804 Out << "pi";
3805 const Expr *Init = New->getInitializer();
3806 if (const CXXConstructExpr *CCE = dyn_cast<CXXConstructExpr>(Init)) {
3807 // Directly inline the initializers.
3808 for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(),
3809 E = CCE->arg_end();
3810 I != E; ++I)
3811 mangleExpression(*I);
3812 } else if (const ParenListExpr *PLE = dyn_cast<ParenListExpr>(Init)) {
3813 for (unsigned i = 0, e = PLE->getNumExprs(); i != e; ++i)
3814 mangleExpression(PLE->getExpr(i));
3815 } else if (New->getInitializationStyle() == CXXNewExpr::ListInit &&
3816 isa<InitListExpr>(Init)) {
3817 // Only take InitListExprs apart for list-initialization.
3818 mangleInitListElements(cast<InitListExpr>(Init));
3819 } else
3820 mangleExpression(Init);
3821 }
3822 Out << 'E';
3823 break;
3824 }
3825
3826 case Expr::CXXPseudoDestructorExprClass: {
3827 const auto *PDE = cast<CXXPseudoDestructorExpr>(E);
3828 if (const Expr *Base = PDE->getBase())
3829 mangleMemberExprBase(Base, PDE->isArrow());
3830 NestedNameSpecifier *Qualifier = PDE->getQualifier();
3831 if (TypeSourceInfo *ScopeInfo = PDE->getScopeTypeInfo()) {
3832 if (Qualifier) {
3833 mangleUnresolvedPrefix(Qualifier,
3834 /*recursive=*/true);
3835 mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType());
3836 Out << 'E';
3837 } else {
3838 Out << "sr";
3839 if (!mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType()))
3840 Out << 'E';
3841 }
3842 } else if (Qualifier) {
3843 mangleUnresolvedPrefix(Qualifier);
3844 }
3845 // <base-unresolved-name> ::= dn <destructor-name>
3846 Out << "dn";
3847 QualType DestroyedType = PDE->getDestroyedType();
3848 mangleUnresolvedTypeOrSimpleId(DestroyedType);
3849 break;
3850 }
3851
3852 case Expr::MemberExprClass: {
3853 const MemberExpr *ME = cast<MemberExpr>(E);
3854 mangleMemberExpr(ME->getBase(), ME->isArrow(),
3855 ME->getQualifier(), nullptr,
3856 ME->getMemberDecl()->getDeclName(),
3857 ME->getTemplateArgs(), ME->getNumTemplateArgs(),
3858 Arity);
3859 break;
3860 }
3861
3862 case Expr::UnresolvedMemberExprClass: {
3863 const UnresolvedMemberExpr *ME = cast<UnresolvedMemberExpr>(E);
3864 mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(),
3865 ME->isArrow(), ME->getQualifier(), nullptr,
3866 ME->getMemberName(),
3867 ME->getTemplateArgs(), ME->getNumTemplateArgs(),
3868 Arity);
3869 break;
3870 }
3871
3872 case Expr::CXXDependentScopeMemberExprClass: {
3873 const CXXDependentScopeMemberExpr *ME
3874 = cast<CXXDependentScopeMemberExpr>(E);
3875 mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(),
3876 ME->isArrow(), ME->getQualifier(),
3877 ME->getFirstQualifierFoundInScope(),
3878 ME->getMember(),
3879 ME->getTemplateArgs(), ME->getNumTemplateArgs(),
3880 Arity);
3881 break;
3882 }
3883
3884 case Expr::UnresolvedLookupExprClass: {
3885 const UnresolvedLookupExpr *ULE = cast<UnresolvedLookupExpr>(E);
3886 mangleUnresolvedName(ULE->getQualifier(), ULE->getName(),
3887 ULE->getTemplateArgs(), ULE->getNumTemplateArgs(),
3888 Arity);
3889 break;
3890 }
3891
3892 case Expr::CXXUnresolvedConstructExprClass: {
3893 const CXXUnresolvedConstructExpr *CE = cast<CXXUnresolvedConstructExpr>(E);
3894 unsigned N = CE->arg_size();
3895
3896 if (CE->isListInitialization()) {
3897 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3897, __PRETTY_FUNCTION__))
;
3898 auto *IL = cast<InitListExpr>(CE->getArg(0));
3899 Out << "tl";
3900 mangleType(CE->getType());
3901 mangleInitListElements(IL);
3902 Out << "E";
3903 return;
3904 }
3905
3906 Out << "cv";
3907 mangleType(CE->getType());
3908 if (N != 1) Out << '_';
3909 for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I));
3910 if (N != 1) Out << 'E';
3911 break;
3912 }
3913
3914 case Expr::CXXConstructExprClass: {
3915 const auto *CE = cast<CXXConstructExpr>(E);
3916 if (!CE->isListInitialization() || CE->isStdInitListInitialization()) {
3917 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3920, __PRETTY_FUNCTION__))
3918 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3920, __PRETTY_FUNCTION__))
3919 (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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3920, __PRETTY_FUNCTION__))
3920 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 3920, __PRETTY_FUNCTION__))
;
3921 return mangleExpression(cast<CXXConstructExpr>(E)->getArg(0));
3922 }
3923 Out << "il";
3924 for (auto *E : CE->arguments())
3925 mangleExpression(E);
3926 Out << "E";
3927 break;
3928 }
3929
3930 case Expr::CXXTemporaryObjectExprClass: {
3931 const auto *CE = cast<CXXTemporaryObjectExpr>(E);
3932 unsigned N = CE->getNumArgs();
3933 bool List = CE->isListInitialization();
3934
3935 if (List)
3936 Out << "tl";
3937 else
3938 Out << "cv";
3939 mangleType(CE->getType());
3940 if (!List && N != 1)
3941 Out << '_';
3942 if (CE->isStdInitListInitialization()) {
3943 // We implicitly created a std::initializer_list<T> for the first argument
3944 // of a constructor of type U in an expression of the form U{a, b, c}.
3945 // Strip all the semantic gunk off the initializer list.
3946 auto *SILE =
3947 cast<CXXStdInitializerListExpr>(CE->getArg(0)->IgnoreImplicit());
3948 auto *ILE = cast<InitListExpr>(SILE->getSubExpr()->IgnoreImplicit());
3949 mangleInitListElements(ILE);
3950 } else {
3951 for (auto *E : CE->arguments())
3952 mangleExpression(E);
3953 }
3954 if (List || N != 1)
3955 Out << 'E';
3956 break;
3957 }
3958
3959 case Expr::CXXScalarValueInitExprClass:
3960 Out << "cv";
3961 mangleType(E->getType());
3962 Out << "_E";
3963 break;
3964
3965 case Expr::CXXNoexceptExprClass:
3966 Out << "nx";
3967 mangleExpression(cast<CXXNoexceptExpr>(E)->getOperand());
3968 break;
3969
3970 case Expr::UnaryExprOrTypeTraitExprClass: {
3971 const UnaryExprOrTypeTraitExpr *SAE = cast<UnaryExprOrTypeTraitExpr>(E);
3972
3973 if (!SAE->isInstantiationDependent()) {
3974 // Itanium C++ ABI:
3975 // If the operand of a sizeof or alignof operator is not
3976 // instantiation-dependent it is encoded as an integer literal
3977 // reflecting the result of the operator.
3978 //
3979 // If the result of the operator is implicitly converted to a known
3980 // integer type, that type is used for the literal; otherwise, the type
3981 // of std::size_t or std::ptrdiff_t is used.
3982 QualType T = (ImplicitlyConvertedToType.isNull() ||
3983 !ImplicitlyConvertedToType->isIntegerType())? SAE->getType()
3984 : ImplicitlyConvertedToType;
3985 llvm::APSInt V = SAE->EvaluateKnownConstInt(Context.getASTContext());
3986 mangleIntegerLiteral(T, V);
3987 break;
3988 }
3989
3990 switch(SAE->getKind()) {
3991 case UETT_SizeOf:
3992 Out << 's';
3993 break;
3994 case UETT_PreferredAlignOf:
3995 case UETT_AlignOf:
3996 Out << 'a';
3997 break;
3998 case UETT_VecStep: {
3999 DiagnosticsEngine &Diags = Context.getDiags();
4000 unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
4001 "cannot yet mangle vec_step expression");
4002 Diags.Report(DiagID);
4003 return;
4004 }
4005 case UETT_OpenMPRequiredSimdAlign: {
4006 DiagnosticsEngine &Diags = Context.getDiags();
4007 unsigned DiagID = Diags.getCustomDiagID(
4008 DiagnosticsEngine::Error,
4009 "cannot yet mangle __builtin_omp_required_simd_align expression");
4010 Diags.Report(DiagID);
4011 return;
4012 }
4013 }
4014 if (SAE->isArgumentType()) {
4015 Out << 't';
4016 mangleType(SAE->getArgumentType());
4017 } else {
4018 Out << 'z';
4019 mangleExpression(SAE->getArgumentExpr());
4020 }
4021 break;
4022 }
4023
4024 case Expr::CXXThrowExprClass: {
4025 const CXXThrowExpr *TE = cast<CXXThrowExpr>(E);
4026 // <expression> ::= tw <expression> # throw expression
4027 // ::= tr # rethrow
4028 if (TE->getSubExpr()) {
4029 Out << "tw";
4030 mangleExpression(TE->getSubExpr());
4031 } else {
4032 Out << "tr";
4033 }
4034 break;
4035 }
4036
4037 case Expr::CXXTypeidExprClass: {
4038 const CXXTypeidExpr *TIE = cast<CXXTypeidExpr>(E);
4039 // <expression> ::= ti <type> # typeid (type)
4040 // ::= te <expression> # typeid (expression)
4041 if (TIE->isTypeOperand()) {
4042 Out << "ti";
4043 mangleType(TIE->getTypeOperand(Context.getASTContext()));
4044 } else {
4045 Out << "te";
4046 mangleExpression(TIE->getExprOperand());
4047 }
4048 break;
4049 }
4050
4051 case Expr::CXXDeleteExprClass: {
4052 const CXXDeleteExpr *DE = cast<CXXDeleteExpr>(E);
4053 // <expression> ::= [gs] dl <expression> # [::] delete expr
4054 // ::= [gs] da <expression> # [::] delete [] expr
4055 if (DE->isGlobalDelete()) Out << "gs";
4056 Out << (DE->isArrayForm() ? "da" : "dl");
4057 mangleExpression(DE->getArgument());
4058 break;
4059 }
4060
4061 case Expr::UnaryOperatorClass: {
4062 const UnaryOperator *UO = cast<UnaryOperator>(E);
4063 mangleOperatorName(UnaryOperator::getOverloadedOperator(UO->getOpcode()),
4064 /*Arity=*/1);
4065 mangleExpression(UO->getSubExpr());
4066 break;
4067 }
4068
4069 case Expr::ArraySubscriptExprClass: {
4070 const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(E);
4071
4072 // Array subscript is treated as a syntactically weird form of
4073 // binary operator.
4074 Out << "ix";
4075 mangleExpression(AE->getLHS());
4076 mangleExpression(AE->getRHS());
4077 break;
4078 }
4079
4080 case Expr::CompoundAssignOperatorClass: // fallthrough
4081 case Expr::BinaryOperatorClass: {
4082 const BinaryOperator *BO = cast<BinaryOperator>(E);
4083 if (BO->getOpcode() == BO_PtrMemD)
4084 Out << "ds";
4085 else
4086 mangleOperatorName(BinaryOperator::getOverloadedOperator(BO->getOpcode()),
4087 /*Arity=*/2);
4088 mangleExpression(BO->getLHS());
4089 mangleExpression(BO->getRHS());
4090 break;
4091 }
4092
4093 case Expr::ConditionalOperatorClass: {
4094 const ConditionalOperator *CO = cast<ConditionalOperator>(E);
4095 mangleOperatorName(OO_Conditional, /*Arity=*/3);
4096 mangleExpression(CO->getCond());
4097 mangleExpression(CO->getLHS(), Arity);
4098 mangleExpression(CO->getRHS(), Arity);
4099 break;
4100 }
4101
4102 case Expr::ImplicitCastExprClass: {
4103 ImplicitlyConvertedToType = E->getType();
4104 E = cast<ImplicitCastExpr>(E)->getSubExpr();
4105 goto recurse;
4106 }
4107
4108 case Expr::ObjCBridgedCastExprClass: {
4109 // Mangle ownership casts as a vendor extended operator __bridge,
4110 // __bridge_transfer, or __bridge_retain.
4111 StringRef Kind = cast<ObjCBridgedCastExpr>(E)->getBridgeKindName();
4112 Out << "v1U" << Kind.size() << Kind;
4113 }
4114 // Fall through to mangle the cast itself.
4115 LLVM_FALLTHROUGH[[gnu::fallthrough]];
4116
4117 case Expr::CStyleCastExprClass:
4118 mangleCastExpression(E, "cv");
4119 break;
4120
4121 case Expr::CXXFunctionalCastExprClass: {
4122 auto *Sub = cast<ExplicitCastExpr>(E)->getSubExpr()->IgnoreImplicit();
4123 // FIXME: Add isImplicit to CXXConstructExpr.
4124 if (auto *CCE = dyn_cast<CXXConstructExpr>(Sub))
4125 if (CCE->getParenOrBraceRange().isInvalid())
4126 Sub = CCE->getArg(0)->IgnoreImplicit();
4127 if (auto *StdInitList = dyn_cast<CXXStdInitializerListExpr>(Sub))
4128 Sub = StdInitList->getSubExpr()->IgnoreImplicit();
4129 if (auto *IL = dyn_cast<InitListExpr>(Sub)) {
4130 Out << "tl";
4131 mangleType(E->getType());
4132 mangleInitListElements(IL);
4133 Out << "E";
4134 } else {
4135 mangleCastExpression(E, "cv");
4136 }
4137 break;
4138 }
4139
4140 case Expr::CXXStaticCastExprClass:
4141 mangleCastExpression(E, "sc");
4142 break;
4143 case Expr::CXXDynamicCastExprClass:
4144 mangleCastExpression(E, "dc");
4145 break;
4146 case Expr::CXXReinterpretCastExprClass:
4147 mangleCastExpression(E, "rc");
4148 break;
4149 case Expr::CXXConstCastExprClass:
4150 mangleCastExpression(E, "cc");
4151 break;
4152
4153 case Expr::CXXOperatorCallExprClass: {
4154 const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E);
4155 unsigned NumArgs = CE->getNumArgs();
4156 // A CXXOperatorCallExpr for OO_Arrow models only semantics, not syntax
4157 // (the enclosing MemberExpr covers the syntactic portion).
4158 if (CE->getOperator() != OO_Arrow)
4159 mangleOperatorName(CE->getOperator(), /*Arity=*/NumArgs);
4160 // Mangle the arguments.
4161 for (unsigned i = 0; i != NumArgs; ++i)
4162 mangleExpression(CE->getArg(i));
4163 break;
4164 }
4165
4166 case Expr::ParenExprClass:
4167 mangleExpression(cast<ParenExpr>(E)->getSubExpr(), Arity);
4168 break;
4169
4170 case Expr::DeclRefExprClass:
4171 mangleDeclRefExpr(cast<DeclRefExpr>(E)->getDecl());
4172 break;
4173
4174 case Expr::SubstNonTypeTemplateParmPackExprClass:
4175 // FIXME: not clear how to mangle this!
4176 // template <unsigned N...> class A {
4177 // template <class U...> void foo(U (&x)[N]...);
4178 // };
4179 Out << "_SUBSTPACK_";
4180 break;
4181
4182 case Expr::FunctionParmPackExprClass: {
4183 // FIXME: not clear how to mangle this!
4184 const FunctionParmPackExpr *FPPE = cast<FunctionParmPackExpr>(E);
4185 Out << "v110_SUBSTPACK";
4186 mangleDeclRefExpr(FPPE->getParameterPack());
4187 break;
4188 }
4189
4190 case Expr::DependentScopeDeclRefExprClass: {
4191 const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E);
4192 mangleUnresolvedName(DRE->getQualifier(), DRE->getDeclName(),
4193 DRE->getTemplateArgs(), DRE->getNumTemplateArgs(),
4194 Arity);
4195 break;
4196 }
4197
4198 case Expr::CXXBindTemporaryExprClass:
4199 mangleExpression(cast<CXXBindTemporaryExpr>(E)->getSubExpr());
4200 break;
4201
4202 case Expr::ExprWithCleanupsClass:
4203 mangleExpression(cast<ExprWithCleanups>(E)->getSubExpr(), Arity);
4204 break;
4205
4206 case Expr::FloatingLiteralClass: {
4207 const FloatingLiteral *FL = cast<FloatingLiteral>(E);
4208 Out << 'L';
4209 mangleType(FL->getType());
4210 mangleFloat(FL->getValue());
4211 Out << 'E';
4212 break;
4213 }
4214
4215 case Expr::CharacterLiteralClass:
4216 Out << 'L';
4217 mangleType(E->getType());
4218 Out << cast<CharacterLiteral>(E)->getValue();
4219 Out << 'E';
4220 break;
4221
4222 // FIXME. __objc_yes/__objc_no are mangled same as true/false
4223 case Expr::ObjCBoolLiteralExprClass:
4224 Out << "Lb";
4225 Out << (cast<ObjCBoolLiteralExpr>(E)->getValue() ? '1' : '0');
4226 Out << 'E';
4227 break;
4228
4229 case Expr::CXXBoolLiteralExprClass:
4230 Out << "Lb";
4231 Out << (cast<CXXBoolLiteralExpr>(E)->getValue() ? '1' : '0');
4232 Out << 'E';
4233 break;
4234
4235 case Expr::IntegerLiteralClass: {
4236 llvm::APSInt Value(cast<IntegerLiteral>(E)->getValue());
4237 if (E->getType()->isSignedIntegerType())
4238 Value.setIsSigned(true);
4239 mangleIntegerLiteral(E->getType(), Value);
4240 break;
4241 }
4242
4243 case Expr::ImaginaryLiteralClass: {
4244 const ImaginaryLiteral *IE = cast<ImaginaryLiteral>(E);
4245 // Mangle as if a complex literal.
4246 // Proposal from David Vandevoorde, 2010.06.30.
4247 Out << 'L';
4248 mangleType(E->getType());
4249 if (const FloatingLiteral *Imag =
4250 dyn_cast<FloatingLiteral>(IE->getSubExpr())) {
4251 // Mangle a floating-point zero of the appropriate type.
4252 mangleFloat(llvm::APFloat(Imag->getValue().getSemantics()));
4253 Out << '_';
4254 mangleFloat(Imag->getValue());
4255 } else {
4256 Out << "0_";
4257 llvm::APSInt Value(cast<IntegerLiteral>(IE->getSubExpr())->getValue());
4258 if (IE->getSubExpr()->getType()->isSignedIntegerType())
4259 Value.setIsSigned(true);
4260 mangleNumber(Value);
4261 }
4262 Out << 'E';
4263 break;
4264 }
4265
4266 case Expr::StringLiteralClass: {
4267 // Revised proposal from David Vandervoorde, 2010.07.15.
4268 Out << 'L';
4269 assert(isa<ConstantArrayType>(E->getType()))((isa<ConstantArrayType>(E->getType())) ? static_cast
<void> (0) : __assert_fail ("isa<ConstantArrayType>(E->getType())"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4269, __PRETTY_FUNCTION__))
;
4270 mangleType(E->getType());
4271 Out << 'E';
4272 break;
4273 }
4274
4275 case Expr::GNUNullExprClass:
4276 // Mangle as if an integer literal 0.
4277 Out << 'L';
4278 mangleType(E->getType());
4279 Out << "0E";
4280 break;
4281
4282 case Expr::CXXNullPtrLiteralExprClass: {
4283 Out << "LDnE";
4284 break;
4285 }
4286
4287 case Expr::PackExpansionExprClass:
4288 Out << "sp";
4289 mangleExpression(cast<PackExpansionExpr>(E)->getPattern());
4290 break;
4291
4292 case Expr::SizeOfPackExprClass: {
4293 auto *SPE = cast<SizeOfPackExpr>(E);
4294 if (SPE->isPartiallySubstituted()) {
4295 Out << "sP";
4296 for (const auto &A : SPE->getPartialArguments())
4297 mangleTemplateArg(A);
4298 Out << "E";
4299 break;
4300 }
4301
4302 Out << "sZ";
4303 const NamedDecl *Pack = SPE->getPack();
4304 if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Pack))
4305 mangleTemplateParameter(TTP->getDepth(), TTP->getIndex());
4306 else if (const NonTypeTemplateParmDecl *NTTP
4307 = dyn_cast<NonTypeTemplateParmDecl>(Pack))
4308 mangleTemplateParameter(NTTP->getDepth(), NTTP->getIndex());
4309 else if (const TemplateTemplateParmDecl *TempTP
4310 = dyn_cast<TemplateTemplateParmDecl>(Pack))
4311 mangleTemplateParameter(TempTP->getDepth(), TempTP->getIndex());
4312 else
4313 mangleFunctionParam(cast<ParmVarDecl>(Pack));
4314 break;
4315 }
4316
4317 case Expr::MaterializeTemporaryExprClass: {
4318 mangleExpression(cast<MaterializeTemporaryExpr>(E)->GetTemporaryExpr());
4319 break;
4320 }
4321
4322 case Expr::CXXFoldExprClass: {
4323 auto *FE = cast<CXXFoldExpr>(E);
4324 if (FE->isLeftFold())
4325 Out << (FE->getInit() ? "fL" : "fl");
4326 else
4327 Out << (FE->getInit() ? "fR" : "fr");
4328
4329 if (FE->getOperator() == BO_PtrMemD)
4330 Out << "ds";
4331 else
4332 mangleOperatorName(
4333 BinaryOperator::getOverloadedOperator(FE->getOperator()),
4334 /*Arity=*/2);
4335
4336 if (FE->getLHS())
4337 mangleExpression(FE->getLHS());
4338 if (FE->getRHS())
4339 mangleExpression(FE->getRHS());
4340 break;
4341 }
4342
4343 case Expr::CXXThisExprClass:
4344 Out << "fpT";
4345 break;
4346
4347 case Expr::CoawaitExprClass:
4348 // FIXME: Propose a non-vendor mangling.
4349 Out << "v18co_await";
4350 mangleExpression(cast<CoawaitExpr>(E)->getOperand());
4351 break;
4352
4353 case Expr::DependentCoawaitExprClass:
4354 // FIXME: Propose a non-vendor mangling.
4355 Out << "v18co_await";
4356 mangleExpression(cast<DependentCoawaitExpr>(E)->getOperand());
4357 break;
4358
4359 case Expr::CoyieldExprClass:
4360 // FIXME: Propose a non-vendor mangling.
4361 Out << "v18co_yield";
4362 mangleExpression(cast<CoawaitExpr>(E)->getOperand());
4363 break;
4364 }
4365}
4366
4367/// Mangle an expression which refers to a parameter variable.
4368///
4369/// <expression> ::= <function-param>
4370/// <function-param> ::= fp <top-level CV-qualifiers> _ # L == 0, I == 0
4371/// <function-param> ::= fp <top-level CV-qualifiers>
4372/// <parameter-2 non-negative number> _ # L == 0, I > 0
4373/// <function-param> ::= fL <L-1 non-negative number>
4374/// p <top-level CV-qualifiers> _ # L > 0, I == 0
4375/// <function-param> ::= fL <L-1 non-negative number>
4376/// p <top-level CV-qualifiers>
4377/// <I-1 non-negative number> _ # L > 0, I > 0
4378///
4379/// L is the nesting depth of the parameter, defined as 1 if the
4380/// parameter comes from the innermost function prototype scope
4381/// enclosing the current context, 2 if from the next enclosing
4382/// function prototype scope, and so on, with one special case: if
4383/// we've processed the full parameter clause for the innermost
4384/// function type, then L is one less. This definition conveniently
4385/// makes it irrelevant whether a function's result type was written
4386/// trailing or leading, but is otherwise overly complicated; the
4387/// numbering was first designed without considering references to
4388/// parameter in locations other than return types, and then the
4389/// mangling had to be generalized without changing the existing
4390/// manglings.
4391///
4392/// I is the zero-based index of the parameter within its parameter
4393/// declaration clause. Note that the original ABI document describes
4394/// this using 1-based ordinals.
4395void CXXNameMangler::mangleFunctionParam(const ParmVarDecl *parm) {
4396 unsigned parmDepth = parm->getFunctionScopeDepth();
4397 unsigned parmIndex = parm->getFunctionScopeIndex();
4398
4399 // Compute 'L'.
4400 // parmDepth does not include the declaring function prototype.
4401 // FunctionTypeDepth does account for that.
4402 assert(parmDepth < FunctionTypeDepth.getDepth())((parmDepth < FunctionTypeDepth.getDepth()) ? static_cast<
void> (0) : __assert_fail ("parmDepth < FunctionTypeDepth.getDepth()"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4402, __PRETTY_FUNCTION__))
;
4403 unsigned nestingDepth = FunctionTypeDepth.getDepth() - parmDepth;
4404 if (FunctionTypeDepth.isInResultType())
4405 nestingDepth--;
4406
4407 if (nestingDepth == 0) {
4408 Out << "fp";
4409 } else {
4410 Out << "fL" << (nestingDepth - 1) << 'p';
4411 }
4412
4413 // Top-level qualifiers. We don't have to worry about arrays here,
4414 // because parameters declared as arrays should already have been
4415 // transformed to have pointer type. FIXME: apparently these don't
4416 // get mangled if used as an rvalue of a known non-class type?
4417 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4418, __PRETTY_FUNCTION__))
4418 && "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4418, __PRETTY_FUNCTION__))
;
4419
4420 if (const DependentAddressSpaceType *DAST =
4421 dyn_cast<DependentAddressSpaceType>(parm->getType())) {
4422 mangleQualifiers(DAST->getPointeeType().getQualifiers(), DAST);
4423 } else {
4424 mangleQualifiers(parm->getType().getQualifiers());
4425 }
4426
4427 // Parameter index.
4428 if (parmIndex != 0) {
4429 Out << (parmIndex - 1);
4430 }
4431 Out << '_';
4432}
4433
4434void CXXNameMangler::mangleCXXCtorType(CXXCtorType T,
4435 const CXXRecordDecl *InheritedFrom) {
4436 // <ctor-dtor-name> ::= C1 # complete object constructor
4437 // ::= C2 # base object constructor
4438 // ::= CI1 <type> # complete inheriting constructor
4439 // ::= CI2 <type> # base inheriting constructor
4440 //
4441 // In addition, C5 is a comdat name with C1 and C2 in it.
4442 Out << 'C';
4443 if (InheritedFrom)
4444 Out << 'I';
4445 switch (T) {
4446 case Ctor_Complete:
4447 Out << '1';
4448 break;
4449 case Ctor_Base:
4450 Out << '2';
4451 break;
4452 case Ctor_Comdat:
4453 Out << '5';
4454 break;
4455 case Ctor_DefaultClosure:
4456 case Ctor_CopyingClosure:
4457 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4457)
;
4458 }
4459 if (InheritedFrom)
4460 mangleName(InheritedFrom);
4461}
4462
4463void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
4464 // <ctor-dtor-name> ::= D0 # deleting destructor
4465 // ::= D1 # complete object destructor
4466 // ::= D2 # base object destructor
4467 //
4468 // In addition, D5 is a comdat name with D1, D2 and, if virtual, D0 in it.
4469 switch (T) {
4470 case Dtor_Deleting:
4471 Out << "D0";
4472 break;
4473 case Dtor_Complete:
4474 Out << "D1";
4475 break;
4476 case Dtor_Base:
4477 Out << "D2";
4478 break;
4479 case Dtor_Comdat:
4480 Out << "D5";
4481 break;
4482 }
4483}
4484
4485void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentLoc *TemplateArgs,
4486 unsigned NumTemplateArgs) {
4487 // <template-args> ::= I <template-arg>+ E
4488 Out << 'I';
4489 for (unsigned i = 0; i != NumTemplateArgs; ++i)
4490 mangleTemplateArg(TemplateArgs[i].getArgument());
4491 Out << 'E';
4492}
4493
4494void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentList &AL) {
4495 // <template-args> ::= I <template-arg>+ E
4496 Out << 'I';
4497 for (unsigned i = 0, e = AL.size(); i != e; ++i)
4498 mangleTemplateArg(AL[i]);
4499 Out << 'E';
4500}
4501
4502void CXXNameMangler::mangleTemplateArgs(const TemplateArgument *TemplateArgs,
4503 unsigned NumTemplateArgs) {
4504 // <template-args> ::= I <template-arg>+ E
4505 Out << 'I';
4506 for (unsigned i = 0; i != NumTemplateArgs; ++i)
4507 mangleTemplateArg(TemplateArgs[i]);
4508 Out << 'E';
4509}
4510
4511void CXXNameMangler::mangleTemplateArg(TemplateArgument A) {
4512 // <template-arg> ::= <type> # type or template
4513 // ::= X <expression> E # expression
4514 // ::= <expr-primary> # simple expressions
4515 // ::= J <template-arg>* E # argument pack
4516 if (!A.isInstantiationDependent() || A.isDependent())
4517 A = Context.getASTContext().getCanonicalTemplateArgument(A);
4518
4519 switch (A.getKind()) {
4520 case TemplateArgument::Null:
4521 llvm_unreachable("Cannot mangle NULL template argument")::llvm::llvm_unreachable_internal("Cannot mangle NULL template argument"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4521)
;
4522
4523 case TemplateArgument::Type:
4524 mangleType(A.getAsType());
4525 break;
4526 case TemplateArgument::Template:
4527 // This is mangled as <type>.
4528 mangleType(A.getAsTemplate());
4529 break;
4530 case TemplateArgument::TemplateExpansion:
4531 // <type> ::= Dp <type> # pack expansion (C++0x)
4532 Out << "Dp";
4533 mangleType(A.getAsTemplateOrTemplatePattern());
4534 break;
4535 case TemplateArgument::Expression: {
4536 // It's possible to end up with a DeclRefExpr here in certain
4537 // dependent cases, in which case we should mangle as a
4538 // declaration.
4539 const Expr *E = A.getAsExpr()->IgnoreParenImpCasts();
4540 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) {
4541 const ValueDecl *D = DRE->getDecl();
4542 if (isa<VarDecl>(D) || isa<FunctionDecl>(D)) {
4543 Out << 'L';
4544 mangle(D);
4545 Out << 'E';
4546 break;
4547 }
4548 }
4549
4550 Out << 'X';
4551 mangleExpression(E);
4552 Out << 'E';
4553 break;
4554 }
4555 case TemplateArgument::Integral:
4556 mangleIntegerLiteral(A.getIntegralType(), A.getAsIntegral());
4557 break;
4558 case TemplateArgument::Declaration: {
4559 // <expr-primary> ::= L <mangled-name> E # external name
4560 // Clang produces AST's where pointer-to-member-function expressions
4561 // and pointer-to-function expressions are represented as a declaration not
4562 // an expression. We compensate for it here to produce the correct mangling.
4563 ValueDecl *D = A.getAsDecl();
4564 bool compensateMangling = !A.getParamTypeForDecl()->isReferenceType();
4565 if (compensateMangling) {
4566 Out << 'X';
4567 mangleOperatorName(OO_Amp, 1);
4568 }
4569
4570 Out << 'L';
4571 // References to external entities use the mangled name; if the name would
4572 // not normally be mangled then mangle it as unqualified.
4573 mangle(D);
4574 Out << 'E';
4575
4576 if (compensateMangling)
4577 Out << 'E';
4578
4579 break;
4580 }
4581 case TemplateArgument::NullPtr: {
4582 // <expr-primary> ::= L <type> 0 E
4583 Out << 'L';
4584 mangleType(A.getNullPtrType());
4585 Out << "0E";
4586 break;
4587 }
4588 case TemplateArgument::Pack: {
4589 // <template-arg> ::= J <template-arg>* E
4590 Out << 'J';
4591 for (const auto &P : A.pack_elements())
4592 mangleTemplateArg(P);
4593 Out << 'E';
4594 }
4595 }
4596}
4597
4598void CXXNameMangler::mangleTemplateParameter(unsigned Depth, unsigned Index) {
4599 // <template-param> ::= T_ # first template parameter
4600 // ::= T <parameter-2 non-negative number> _
4601 // ::= TL <L-1 non-negative number> __
4602 // ::= TL <L-1 non-negative number> _
4603 // <parameter-2 non-negative number> _
4604 //
4605 // The latter two manglings are from a proposal here:
4606 // https://github.com/itanium-cxx-abi/cxx-abi/issues/31#issuecomment-528122117
4607 Out << 'T';
4608 if (Depth != 0)
4609 Out << 'L' << (Depth - 1) << '_';
4610 if (Index != 0)
4611 Out << (Index - 1);
4612 Out << '_';
4613}
4614
4615void CXXNameMangler::mangleSeqID(unsigned SeqID) {
4616 if (SeqID == 1)
4617 Out << '0';
4618 else if (SeqID > 1) {
4619 SeqID--;
4620
4621 // <seq-id> is encoded in base-36, using digits and upper case letters.
4622 char Buffer[7]; // log(2**32) / log(36) ~= 7
4623 MutableArrayRef<char> BufferRef(Buffer);
4624 MutableArrayRef<char>::reverse_iterator I = BufferRef.rbegin();
4625
4626 for (; SeqID != 0; SeqID /= 36) {
4627 unsigned C = SeqID % 36;
4628 *I++ = (C < 10 ? '0' + C : 'A' + C - 10);
4629 }
4630
4631 Out.write(I.base(), I - BufferRef.rbegin());
4632 }
4633 Out << '_';
4634}
4635
4636void CXXNameMangler::mangleExistingSubstitution(TemplateName tname) {
4637 bool result = mangleSubstitution(tname);
4638 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4638, __PRETTY_FUNCTION__))
;
4639 (void) result;
4640}
4641
4642// <substitution> ::= S <seq-id> _
4643// ::= S_
4644bool CXXNameMangler::mangleSubstitution(const NamedDecl *ND) {
4645 // Try one of the standard substitutions first.
4646 if (mangleStandardSubstitution(ND))
4647 return true;
4648
4649 ND = cast<NamedDecl>(ND->getCanonicalDecl());
4650 return mangleSubstitution(reinterpret_cast<uintptr_t>(ND));
4651}
4652
4653/// Determine whether the given type has any qualifiers that are relevant for
4654/// substitutions.
4655static bool hasMangledSubstitutionQualifiers(QualType T) {
4656 Qualifiers Qs = T.getQualifiers();
4657 return Qs.getCVRQualifiers() || Qs.hasAddressSpace() || Qs.hasUnaligned();
4658}
4659
4660bool CXXNameMangler::mangleSubstitution(QualType T) {
4661 if (!hasMangledSubstitutionQualifiers(T)) {
4662 if (const RecordType *RT = T->getAs<RecordType>())
4663 return mangleSubstitution(RT->getDecl());
4664 }
4665
4666 uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
4667
4668 return mangleSubstitution(TypePtr);
4669}
4670
4671bool CXXNameMangler::mangleSubstitution(TemplateName Template) {
4672 if (TemplateDecl *TD = Template.getAsTemplateDecl())
4673 return mangleSubstitution(TD);
4674
4675 Template = Context.getASTContext().getCanonicalTemplateName(Template);
4676 return mangleSubstitution(
4677 reinterpret_cast<uintptr_t>(Template.getAsVoidPointer()));
4678}
4679
4680bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) {
4681 llvm::DenseMap<uintptr_t, unsigned>::iterator I = Substitutions.find(Ptr);
4682 if (I == Substitutions.end())
4683 return false;
4684
4685 unsigned SeqID = I->second;
4686 Out << 'S';
4687 mangleSeqID(SeqID);
4688
4689 return true;
4690}
4691
4692static bool isCharType(QualType T) {
4693 if (T.isNull())
4694 return false;
4695
4696 return T->isSpecificBuiltinType(BuiltinType::Char_S) ||
4697 T->isSpecificBuiltinType(BuiltinType::Char_U);
4698}
4699
4700/// Returns whether a given type is a template specialization of a given name
4701/// with a single argument of type char.
4702static bool isCharSpecialization(QualType T, const char *Name) {
4703 if (T.isNull())
4704 return false;
4705
4706 const RecordType *RT = T->getAs<RecordType>();
4707 if (!RT)
4708 return false;
4709
4710 const ClassTemplateSpecializationDecl *SD =
4711 dyn_cast<ClassTemplateSpecializationDecl>(RT->getDecl());
4712 if (!SD)
4713 return false;
4714
4715 if (!isStdNamespace(getEffectiveDeclContext(SD)))
4716 return false;
4717
4718 const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
4719 if (TemplateArgs.size() != 1)
4720 return false;
4721
4722 if (!isCharType(TemplateArgs[0].getAsType()))
4723 return false;
4724
4725 return SD->getIdentifier()->getName() == Name;
4726}
4727
4728template <std::size_t StrLen>
4729static bool isStreamCharSpecialization(const ClassTemplateSpecializationDecl*SD,
4730 const char (&Str)[StrLen]) {
4731 if (!SD->getIdentifier()->isStr(Str))
4732 return false;
4733
4734 const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
4735 if (TemplateArgs.size() != 2)
4736 return false;
4737
4738 if (!isCharType(TemplateArgs[0].getAsType()))
4739 return false;
4740
4741 if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits"))
4742 return false;
4743
4744 return true;
4745}
4746
4747bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) {
4748 // <substitution> ::= St # ::std::
4749 if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
4750 if (isStd(NS)) {
4751 Out << "St";
4752 return true;
4753 }
4754 }
4755
4756 if (const ClassTemplateDecl *TD = dyn_cast<ClassTemplateDecl>(ND)) {
4757 if (!isStdNamespace(getEffectiveDeclContext(TD)))
4758 return false;
4759
4760 // <substitution> ::= Sa # ::std::allocator
4761 if (TD->getIdentifier()->isStr("allocator")) {
4762 Out << "Sa";
4763 return true;
4764 }
4765
4766 // <<substitution> ::= Sb # ::std::basic_string
4767 if (TD->getIdentifier()->isStr("basic_string")) {
4768 Out << "Sb";
4769 return true;
4770 }
4771 }
4772
4773 if (const ClassTemplateSpecializationDecl *SD =
4774 dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
4775 if (!isStdNamespace(getEffectiveDeclContext(SD)))
4776 return false;
4777
4778 // <substitution> ::= Ss # ::std::basic_string<char,
4779 // ::std::char_traits<char>,
4780 // ::std::allocator<char> >
4781 if (SD->getIdentifier()->isStr("basic_string")) {
4782 const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
4783
4784 if (TemplateArgs.size() != 3)
4785 return false;
4786
4787 if (!isCharType(TemplateArgs[0].getAsType()))
4788 return false;
4789
4790 if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits"))
4791 return false;
4792
4793 if (!isCharSpecialization(TemplateArgs[2].getAsType(), "allocator"))
4794 return false;
4795
4796 Out << "Ss";
4797 return true;
4798 }
4799
4800 // <substitution> ::= Si # ::std::basic_istream<char,
4801 // ::std::char_traits<char> >
4802 if (isStreamCharSpecialization(SD, "basic_istream")) {
4803 Out << "Si";
4804 return true;
4805 }
4806
4807 // <substitution> ::= So # ::std::basic_ostream<char,
4808 // ::std::char_traits<char> >
4809 if (isStreamCharSpecialization(SD, "basic_ostream")) {
4810 Out << "So";
4811 return true;
4812 }
4813
4814 // <substitution> ::= Sd # ::std::basic_iostream<char,
4815 // ::std::char_traits<char> >
4816 if (isStreamCharSpecialization(SD, "basic_iostream")) {
4817 Out << "Sd";
4818 return true;
4819 }
4820 }
4821 return false;
4822}
4823
4824void CXXNameMangler::addSubstitution(QualType T) {
4825 if (!hasMangledSubstitutionQualifiers(T)) {
4826 if (const RecordType *RT = T->getAs<RecordType>()) {
4827 addSubstitution(RT->getDecl());
4828 return;
4829 }
4830 }
4831
4832 uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
4833 addSubstitution(TypePtr);
4834}
4835
4836void CXXNameMangler::addSubstitution(TemplateName Template) {
4837 if (TemplateDecl *TD = Template.getAsTemplateDecl())
4838 return addSubstitution(TD);
4839
4840 Template = Context.getASTContext().getCanonicalTemplateName(Template);
4841 addSubstitution(reinterpret_cast<uintptr_t>(Template.getAsVoidPointer()));
4842}
4843
4844void CXXNameMangler::addSubstitution(uintptr_t Ptr) {
4845 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4845, __PRETTY_FUNCTION__))
;
4846 Substitutions[Ptr] = SeqID++;
4847}
4848
4849void CXXNameMangler::extendSubstitutions(CXXNameMangler* Other) {
4850 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4850, __PRETTY_FUNCTION__))
;
4851 if (Other->SeqID > SeqID) {
4852 Substitutions.swap(Other->Substitutions);
4853 SeqID = Other->SeqID;
4854 }
4855}
4856
4857CXXNameMangler::AbiTagList
4858CXXNameMangler::makeFunctionReturnTypeTags(const FunctionDecl *FD) {
4859 // When derived abi tags are disabled there is no need to make any list.
4860 if (DisableDerivedAbiTags)
4861 return AbiTagList();
4862
4863 llvm::raw_null_ostream NullOutStream;
4864 CXXNameMangler TrackReturnTypeTags(*this, NullOutStream);
4865 TrackReturnTypeTags.disableDerivedAbiTags();
4866
4867 const FunctionProtoType *Proto =
4868 cast<FunctionProtoType>(FD->getType()->getAs<FunctionType>());
4869 FunctionTypeDepthState saved = TrackReturnTypeTags.FunctionTypeDepth.push();
4870 TrackReturnTypeTags.FunctionTypeDepth.enterResultType();
4871 TrackReturnTypeTags.mangleType(Proto->getReturnType());
4872 TrackReturnTypeTags.FunctionTypeDepth.leaveResultType();
4873 TrackReturnTypeTags.FunctionTypeDepth.pop(saved);
4874
4875 return TrackReturnTypeTags.AbiTagsRoot.getSortedUniqueUsedAbiTags();
4876}
4877
4878CXXNameMangler::AbiTagList
4879CXXNameMangler::makeVariableTypeTags(const VarDecl *VD) {
4880 // When derived abi tags are disabled there is no need to make any list.
4881 if (DisableDerivedAbiTags)
4882 return AbiTagList();
4883
4884 llvm::raw_null_ostream NullOutStream;
4885 CXXNameMangler TrackVariableType(*this, NullOutStream);
4886 TrackVariableType.disableDerivedAbiTags();
4887
4888 TrackVariableType.mangleType(VD->getType());
4889
4890 return TrackVariableType.AbiTagsRoot.getSortedUniqueUsedAbiTags();
4891}
4892
4893bool CXXNameMangler::shouldHaveAbiTags(ItaniumMangleContextImpl &C,
4894 const VarDecl *VD) {
4895 llvm::raw_null_ostream NullOutStream;
4896 CXXNameMangler TrackAbiTags(C, NullOutStream, nullptr, true);
4897 TrackAbiTags.mangle(VD);
4898 return TrackAbiTags.AbiTagsRoot.getUsedAbiTags().size();
4899}
4900
4901//
4902
4903/// Mangles the name of the declaration D and emits that name to the given
4904/// output stream.
4905///
4906/// If the declaration D requires a mangled name, this routine will emit that
4907/// mangled name to \p os and return true. Otherwise, \p os will be unchanged
4908/// and this routine will return false. In this case, the caller should just
4909/// emit the identifier of the declaration (\c D->getIdentifier()) as its
4910/// name.
4911void ItaniumMangleContextImpl::mangleCXXName(const NamedDecl *D,
4912 raw_ostream &Out) {
4913 assert((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&(((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&
"Invalid mangleName() call, argument is not a variable or function!"
) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl>(D) || isa<VarDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4914, __PRETTY_FUNCTION__))
4914 "Invalid mangleName() call, argument is not a variable or function!")(((isa<FunctionDecl>(D) || isa<VarDecl>(D)) &&
"Invalid mangleName() call, argument is not a variable or function!"
) ? static_cast<void> (0) : __assert_fail ("(isa<FunctionDecl>(D) || isa<VarDecl>(D)) && \"Invalid mangleName() call, argument is not a variable or function!\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4914, __PRETTY_FUNCTION__))
;
4915 assert(!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) &&((!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl
>(D) && "Invalid mangleName() call on 'structor decl!"
) ? static_cast<void> (0) : __assert_fail ("!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) && \"Invalid mangleName() call on 'structor decl!\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4916, __PRETTY_FUNCTION__))
4916 "Invalid mangleName() call on 'structor decl!")((!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl
>(D) && "Invalid mangleName() call on 'structor decl!"
) ? static_cast<void> (0) : __assert_fail ("!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) && \"Invalid mangleName() call on 'structor decl!\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4916, __PRETTY_FUNCTION__))
;
4917
4918 PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
4919 getASTContext().getSourceManager(),
4920 "Mangling declaration");
4921
4922 CXXNameMangler Mangler(*this, Out, D);
4923 Mangler.mangle(D);
4924}
4925
4926void ItaniumMangleContextImpl::mangleCXXCtor(const CXXConstructorDecl *D,
4927 CXXCtorType Type,
4928 raw_ostream &Out) {
4929 CXXNameMangler Mangler(*this, Out, D, Type);
4930 Mangler.mangle(D);
4931}
4932
4933void ItaniumMangleContextImpl::mangleCXXDtor(const CXXDestructorDecl *D,
4934 CXXDtorType Type,
4935 raw_ostream &Out) {
4936 CXXNameMangler Mangler(*this, Out, D, Type);
4937 Mangler.mangle(D);
4938}
4939
4940void ItaniumMangleContextImpl::mangleCXXCtorComdat(const CXXConstructorDecl *D,
4941 raw_ostream &Out) {
4942 CXXNameMangler Mangler(*this, Out, D, Ctor_Comdat);
4943 Mangler.mangle(D);
4944}
4945
4946void ItaniumMangleContextImpl::mangleCXXDtorComdat(const CXXDestructorDecl *D,
4947 raw_ostream &Out) {
4948 CXXNameMangler Mangler(*this, Out, D, Dtor_Comdat);
4949 Mangler.mangle(D);
4950}
4951
4952void ItaniumMangleContextImpl::mangleThunk(const CXXMethodDecl *MD,
4953 const ThunkInfo &Thunk,
4954 raw_ostream &Out) {
4955 // <special-name> ::= T <call-offset> <base encoding>
4956 // # base is the nominal target function of thunk
4957 // <special-name> ::= Tc <call-offset> <call-offset> <base encoding>
4958 // # base is the nominal target function of thunk
4959 // # first call-offset is 'this' adjustment
4960 // # second call-offset is result adjustment
4961
4962 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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4963, __PRETTY_FUNCTION__))
4963 "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-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 4963, __PRETTY_FUNCTION__))
;
4964 CXXNameMangler Mangler(*this, Out);
4965 Mangler.getStream() << "_ZT";
4966 if (!Thunk.Return.isEmpty())
4967 Mangler.getStream() << 'c';
4968
4969 // Mangle the 'this' pointer adjustment.
4970 Mangler.mangleCallOffset(Thunk.This.NonVirtual,
4971 Thunk.This.Virtual.Itanium.VCallOffsetOffset);
4972
4973 // Mangle the return pointer adjustment if there is one.
4974 if (!Thunk.Return.isEmpty())
4975 Mangler.mangleCallOffset(Thunk.Return.NonVirtual,
4976 Thunk.Return.Virtual.Itanium.VBaseOffsetOffset);
4977
4978 Mangler.mangleFunctionEncoding(MD);
4979}
4980
4981void ItaniumMangleContextImpl::mangleCXXDtorThunk(
4982 const CXXDestructorDecl *DD, CXXDtorType Type,
4983 const ThisAdjustment &ThisAdjustment, raw_ostream &Out) {
4984 // <special-name> ::= T <call-offset> <base encoding>
4985 // # base is the nominal target function of thunk
4986 CXXNameMangler Mangler(*this, Out, DD, Type);
4987 Mangler.getStream() << "_ZT";
4988
4989 // Mangle the 'this' pointer adjustment.
4990 Mangler.mangleCallOffset(ThisAdjustment.NonVirtual,
4991 ThisAdjustment.Virtual.Itanium.VCallOffsetOffset);
4992
4993 Mangler.mangleFunctionEncoding(DD);
4994}
4995
4996/// Returns the mangled name for a guard variable for the passed in VarDecl.
4997void ItaniumMangleContextImpl::mangleStaticGuardVariable(const VarDecl *D,
4998 raw_ostream &Out) {
4999 // <special-name> ::= GV <object name> # Guard variable for one-time
5000 // # initialization
5001 CXXNameMangler Mangler(*this, Out);
5002 // GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to
5003 // be a bug that is fixed in trunk.
5004 Mangler.getStream() << "_ZGV";
5005 Mangler.mangleName(D);
5006}
5007
5008void ItaniumMangleContextImpl::mangleDynamicInitializer(const VarDecl *MD,
5009 raw_ostream &Out) {
5010 // These symbols are internal in the Itanium ABI, so the names don't matter.
5011 // Clang has traditionally used this symbol and allowed LLVM to adjust it to
5012 // avoid duplicate symbols.
5013 Out << "__cxx_global_var_init";
5014}
5015
5016void ItaniumMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D,
5017 raw_ostream &Out) {
5018 // Prefix the mangling of D with __dtor_.
5019 CXXNameMangler Mangler(*this, Out);
5020 Mangler.getStream() << "__dtor_";
5021 if (shouldMangleDeclName(D))
5022 Mangler.mangle(D);
5023 else
5024 Mangler.getStream() << D->getName();
5025}
5026
5027void ItaniumMangleContextImpl::mangleSEHFilterExpression(
5028 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
5029 CXXNameMangler Mangler(*this, Out);
5030 Mangler.getStream() << "__filt_";
5031 if (shouldMangleDeclName(EnclosingDecl))
5032 Mangler.mangle(EnclosingDecl);
5033 else
5034 Mangler.getStream() << EnclosingDecl->getName();
5035}
5036
5037void ItaniumMangleContextImpl::mangleSEHFinallyBlock(
5038 const NamedDecl *EnclosingDecl, raw_ostream &Out) {
5039 CXXNameMangler Mangler(*this, Out);
5040 Mangler.getStream() << "__fin_";
5041 if (shouldMangleDeclName(EnclosingDecl))
5042 Mangler.mangle(EnclosingDecl);
5043 else
5044 Mangler.getStream() << EnclosingDecl->getName();
5045}
5046
5047void ItaniumMangleContextImpl::mangleItaniumThreadLocalInit(const VarDecl *D,
5048 raw_ostream &Out) {
5049 // <special-name> ::= TH <object name>
5050 CXXNameMangler Mangler(*this, Out);
5051 Mangler.getStream() << "_ZTH";
5052 Mangler.mangleName(D);
5053}
5054
5055void
5056ItaniumMangleContextImpl::mangleItaniumThreadLocalWrapper(const VarDecl *D,
5057 raw_ostream &Out) {
5058 // <special-name> ::= TW <object name>
5059 CXXNameMangler Mangler(*this, Out);
5060 Mangler.getStream() << "_ZTW";
5061 Mangler.mangleName(D);
5062}
5063
5064void ItaniumMangleContextImpl::mangleReferenceTemporary(const VarDecl *D,
5065 unsigned ManglingNumber,
5066 raw_ostream &Out) {
5067 // We match the GCC mangling here.
5068 // <special-name> ::= GR <object name>
5069 CXXNameMangler Mangler(*this, Out);
5070 Mangler.getStream() << "_ZGR";
5071 Mangler.mangleName(D);
5072 assert(ManglingNumber > 0 && "Reference temporary mangling number is zero!")((ManglingNumber > 0 && "Reference temporary mangling number is zero!"
) ? static_cast<void> (0) : __assert_fail ("ManglingNumber > 0 && \"Reference temporary mangling number is zero!\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 5072, __PRETTY_FUNCTION__))
;
5073 Mangler.mangleSeqID(ManglingNumber - 1);
5074}
5075
5076void ItaniumMangleContextImpl::mangleCXXVTable(const CXXRecordDecl *RD,
5077 raw_ostream &Out) {
5078 // <special-name> ::= TV <type> # virtual table
5079 CXXNameMangler Mangler(*this, Out);
5080 Mangler.getStream() << "_ZTV";
5081 Mangler.mangleNameOrStandardSubstitution(RD);
5082}
5083
5084void ItaniumMangleContextImpl::mangleCXXVTT(const CXXRecordDecl *RD,
5085 raw_ostream &Out) {
5086 // <special-name> ::= TT <type> # VTT structure
5087 CXXNameMangler Mangler(*this, Out);
5088 Mangler.getStream() << "_ZTT";
5089 Mangler.mangleNameOrStandardSubstitution(RD);
5090}
5091
5092void ItaniumMangleContextImpl::mangleCXXCtorVTable(const CXXRecordDecl *RD,
5093 int64_t Offset,
5094 const CXXRecordDecl *Type,
5095 raw_ostream &Out) {
5096 // <special-name> ::= TC <type> <offset number> _ <base type>
5097 CXXNameMangler Mangler(*this, Out);
5098 Mangler.getStream() << "_ZTC";
5099 Mangler.mangleNameOrStandardSubstitution(RD);
5100 Mangler.getStream() << Offset;
5101 Mangler.getStream() << '_';
5102 Mangler.mangleNameOrStandardSubstitution(Type);
5103}
5104
5105void ItaniumMangleContextImpl::mangleCXXRTTI(QualType Ty, raw_ostream &Out) {
5106 // <special-name> ::= TI <type> # typeinfo structure
5107 assert(!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers")((!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers"
) ? static_cast<void> (0) : __assert_fail ("!Ty.hasQualifiers() && \"RTTI info cannot have top-level qualifiers\""
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 5107, __PRETTY_FUNCTION__))
;
5108 CXXNameMangler Mangler(*this, Out);
5109 Mangler.getStream() << "_ZTI";
5110 Mangler.mangleType(Ty);
5111}
5112
5113void ItaniumMangleContextImpl::mangleCXXRTTIName(QualType Ty,
5114 raw_ostream &Out) {
5115 // <special-name> ::= TS <type> # typeinfo name (null terminated byte string)
5116 CXXNameMangler Mangler(*this, Out);
5117 Mangler.getStream() << "_ZTS";
5118 Mangler.mangleType(Ty);
5119}
5120
5121void ItaniumMangleContextImpl::mangleTypeName(QualType Ty, raw_ostream &Out) {
5122 mangleCXXRTTIName(Ty, Out);
5123}
5124
5125void ItaniumMangleContextImpl::mangleStringLiteral(const StringLiteral *, raw_ostream &) {
5126 llvm_unreachable("Can't mangle string literals")::llvm::llvm_unreachable_internal("Can't mangle string literals"
, "/build/llvm-toolchain-snapshot-10~svn374814/tools/clang/lib/AST/ItaniumMangle.cpp"
, 5126)
;
5127}
5128
5129void ItaniumMangleContextImpl::mangleLambdaSig(const CXXRecordDecl *Lambda,
5130 raw_ostream &Out) {
5131 CXXNameMangler Mangler(*this, Out);
5132 Mangler.mangleLambdaSig(Lambda);
1
Calling 'CXXNameMangler::mangleLambdaSig'
5133}
5134
5135ItaniumMangleContext *
5136ItaniumMangleContext::create(ASTContext &Context, DiagnosticsEngine &Diags) {
5137 return new ItaniumMangleContextImpl(Context, Diags);
5138}