Coverage Report

Created: 2021-08-24 07:12

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/AST/Mangle.cpp
Line
Count
Source (jump to first uncovered line)
1
//===--- Mangle.cpp - Mangle C++ Names --------------------------*- C++ -*-===//
2
//
3
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4
// See https://llvm.org/LICENSE.txt for license information.
5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6
//
7
//===----------------------------------------------------------------------===//
8
//
9
// Implements generic name mangling support for blocks and Objective-C.
10
//
11
//===----------------------------------------------------------------------===//
12
#include "clang/AST/Attr.h"
13
#include "clang/AST/ASTContext.h"
14
#include "clang/AST/Decl.h"
15
#include "clang/AST/DeclCXX.h"
16
#include "clang/AST/DeclObjC.h"
17
#include "clang/AST/DeclTemplate.h"
18
#include "clang/AST/ExprCXX.h"
19
#include "clang/AST/Mangle.h"
20
#include "clang/AST/VTableBuilder.h"
21
#include "clang/Basic/ABI.h"
22
#include "clang/Basic/SourceManager.h"
23
#include "clang/Basic/TargetInfo.h"
24
#include "llvm/ADT/StringExtras.h"
25
#include "llvm/IR/DataLayout.h"
26
#include "llvm/IR/Mangler.h"
27
#include "llvm/Support/ErrorHandling.h"
28
#include "llvm/Support/Format.h"
29
#include "llvm/Support/raw_ostream.h"
30
31
using namespace clang;
32
33
// FIXME: For blocks we currently mimic GCC's mangling scheme, which leaves
34
// much to be desired. Come up with a better mangling scheme.
35
36
static void mangleFunctionBlock(MangleContext &Context,
37
                                StringRef Outer,
38
                                const BlockDecl *BD,
39
968
                                raw_ostream &Out) {
40
968
  unsigned discriminator = Context.getBlockId(BD, true);
41
968
  if (discriminator == 0)
42
777
    Out << "__" << Outer << "_block_invoke";
43
191
  else
44
191
    Out << "__" << Outer << "_block_invoke_" << discriminator+1;
45
968
}
46
47
0
void MangleContext::anchor() { }
48
49
enum CCMangling {
50
  CCM_Other,
51
  CCM_Fast,
52
  CCM_RegCall,
53
  CCM_Vector,
54
  CCM_Std,
55
  CCM_WasmMainArgcArgv
56
};
57
58
84.6k
static bool isExternC(const NamedDecl *ND) {
59
84.6k
  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
60
79.2k
    return FD->isExternC();
61
5.39k
  if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
62
5.38k
    return VD->isExternC();
63
9
  return false;
64
5.39k
}
65
66
static CCMangling getCallingConvMangling(const ASTContext &Context,
67
5.71M
                                         const NamedDecl *ND) {
68
5.71M
  const TargetInfo &TI = Context.getTargetInfo();
69
5.71M
  const llvm::Triple &Triple = TI.getTriple();
70
71
  // On wasm, the argc/argv form of "main" is renamed so that the startup code
72
  // can call it with the correct function signature.
73
  // On Emscripten, users may be exporting "main" and expecting to call it
74
  // themselves, so we can't mangle it.
75
5.71M
  if (Triple.isWasm() && 
!Triple.isOSEmscripten()1.78k
)
76
1.75k
    if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
77
1.66k
      if (FD->isMain() && 
FD->hasPrototype()5
&&
FD->param_size() == 25
)
78
4
        return CCM_WasmMainArgcArgv;
79
80
5.71M
  if (!Triple.isOSWindows() || 
!Triple.isX86()137k
)
81
5.58M
    return CCM_Other;
82
83
135k
  if (Context.getLangOpts().CPlusPlus && 
!isExternC(ND)84.6k
&&
84
135k
      
TI.getCXXABI() == TargetCXXABI::Microsoft84.4k
)
85
74.4k
    return CCM_Other;
86
87
61.5k
  const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND);
88
61.5k
  if (!FD)
89
998
    return CCM_Other;
90
60.5k
  QualType T = FD->getType();
91
92
60.5k
  const FunctionType *FT = T->castAs<FunctionType>();
93
94
60.5k
  CallingConv CC = FT->getCallConv();
95
60.5k
  switch (CC) {
96
60.1k
  default:
97
60.1k
    return CCM_Other;
98
87
  case CC_X86FastCall:
99
87
    return CCM_Fast;
100
51
  case CC_X86StdCall:
101
51
    return CCM_Std;
102
187
  case CC_X86VectorCall:
103
187
    return CCM_Vector;
104
60.5k
  }
105
60.5k
}
106
107
4.32M
bool MangleContext::shouldMangleDeclName(const NamedDecl *D) {
108
4.32M
  const ASTContext &ASTContext = getASTContext();
109
110
4.32M
  CCMangling CC = getCallingConvMangling(ASTContext, D);
111
4.32M
  if (CC != CCM_Other)
112
178
    return true;
113
114
  // If the declaration has an owning module for linkage purposes that needs to
115
  // be mangled, we must mangle its name.
116
4.32M
  if (!D->hasExternalFormalLinkage() && 
D->getOwningModuleForLinkage()2.28M
)
117
54
    return true;
118
119
  // C functions with internal linkage have to be mangled with option
120
  // -funique-internal-linkage-names.
121
4.32M
  if (!getASTContext().getLangOpts().CPlusPlus &&
122
4.32M
      
isUniqueInternalLinkageDecl(D)1.96M
)
123
8
    return true;
124
125
  // In C, functions with no attributes never need to be mangled. Fastpath them.
126
4.32M
  if (!getASTContext().getLangOpts().CPlusPlus && 
!D->hasAttrs()1.96M
)
127
158k
    return false;
128
129
  // Any decl can be declared with __asm("foo") on it, and this takes precedence
130
  // over all other naming in the .o file.
131
4.17M
  if (D->hasAttr<AsmLabelAttr>())
132
9.20k
    return true;
133
134
  // Declarations that don't have identifier names always need to be mangled.
135
4.16M
  if (isa<MSGuidDecl>(D))
136
32
    return true;
137
138
4.16M
  return shouldMangleCXXName(D);
139
4.16M
}
140
141
1.39M
void MangleContext::mangleName(GlobalDecl GD, raw_ostream &Out) {
142
1.39M
  const ASTContext &ASTContext = getASTContext();
143
1.39M
  const NamedDecl *D = cast<NamedDecl>(GD.getDecl());
144
145
  // Any decl can be declared with __asm("foo") on it, and this takes precedence
146
  // over all other naming in the .o file.
147
1.39M
  if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
148
    // If we have an asm name, then we use it as the mangling.
149
150
    // If the label isn't literal, or if this is an alias for an LLVM intrinsic,
151
    // do not add a "\01" prefix.
152
9.24k
    if (!ALA->getIsLiteralLabel() || 
ALA->getLabel().startswith("llvm.")8.93k
) {
153
316
      Out << ALA->getLabel();
154
316
      return;
155
316
    }
156
157
    // Adding the prefix can cause problems when one file has a "foo" and
158
    // another has a "\01foo". That is known to happen on ELF with the
159
    // tricks normally used for producing aliases (PR9177). Fortunately the
160
    // llvm mangler on ELF is a nop, so we can just avoid adding the \01
161
    // marker.
162
8.92k
    StringRef UserLabelPrefix =
163
8.92k
        getASTContext().getTargetInfo().getUserLabelPrefix();
164
8.92k
#ifndef NDEBUG
165
8.92k
    char GlobalPrefix =
166
8.92k
        llvm::DataLayout(getASTContext().getTargetInfo().getDataLayoutString())
167
8.92k
            .getGlobalPrefix();
168
8.92k
    assert((UserLabelPrefix.empty() && !GlobalPrefix) ||
169
8.92k
           (UserLabelPrefix.size() == 1 && UserLabelPrefix[0] == GlobalPrefix));
170
0
#endif
171
8.92k
    if (!UserLabelPrefix.empty())
172
8.89k
      Out << '\01'; // LLVM IR Marker for __asm("foo")
173
174
8.92k
    Out << ALA->getLabel();
175
8.92k
    return;
176
9.24k
  }
177
178
1.38M
  if (auto *GD = dyn_cast<MSGuidDecl>(D))
179
32
    return mangleMSGuidDecl(GD, Out);
180
181
1.38M
  CCMangling CC = getCallingConvMangling(ASTContext, D);
182
183
1.38M
  if (CC == CCM_WasmMainArgcArgv) {
184
2
    Out << "__main_argc_argv";
185
2
    return;
186
2
  }
187
188
1.38M
  bool MCXX = shouldMangleCXXName(D);
189
1.38M
  const TargetInfo &TI = Context.getTargetInfo();
190
1.38M
  if (CC == CCM_Other || 
(149
MCXX149
&&
TI.getCXXABI() == TargetCXXABI::Microsoft27
)) {
191
1.38M
    if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
192
0
      mangleObjCMethodNameAsSourceName(OMD, Out);
193
1.38M
    else
194
1.38M
      mangleCXXName(GD, Out);
195
1.38M
    return;
196
1.38M
  }
197
198
148
  Out << '\01';
199
148
  if (CC == CCM_Std)
200
20
    Out << '_';
201
128
  else if (CC == CCM_Fast)
202
38
    Out << '@';
203
90
  else if (CC == CCM_RegCall)
204
0
    Out << "__regcall3__";
205
206
148
  if (!MCXX)
207
122
    Out << D->getIdentifier()->getName();
208
26
  else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
209
0
    mangleObjCMethodNameAsSourceName(OMD, Out);
210
26
  else
211
26
    mangleCXXName(GD, Out);
212
213
148
  const FunctionDecl *FD = cast<FunctionDecl>(D);
214
148
  const FunctionType *FT = FD->getType()->castAs<FunctionType>();
215
148
  const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FT);
216
148
  if (CC == CCM_Vector)
217
90
    Out << '@';
218
148
  Out << '@';
219
148
  if (!Proto) {
220
5
    Out << '0';
221
5
    return;
222
5
  }
223
143
  assert(!Proto->isVariadic());
224
0
  unsigned ArgWords = 0;
225
143
  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD))
226
4
    if (!MD->isStatic())
227
3
      ++ArgWords;
228
143
  for (const auto &AT : Proto->param_types())
229
    // Size should be aligned to pointer size.
230
250
    ArgWords +=
231
250
        llvm::alignTo(ASTContext.getTypeSize(AT), TI.getPointerWidth(0)) /
232
250
        TI.getPointerWidth(0);
233
143
  Out << ((TI.getPointerWidth(0) / 8) * ArgWords);
234
143
}
235
236
67
void MangleContext::mangleMSGuidDecl(const MSGuidDecl *GD, raw_ostream &Out) {
237
  // For now, follow the MSVC naming convention for GUID objects on all
238
  // targets.
239
67
  MSGuidDecl::Parts P = GD->getParts();
240
67
  Out << llvm::format("_GUID_%08" PRIx32 "_%04" PRIx32 "_%04" PRIx32 "_",
241
67
                      P.Part1, P.Part2, P.Part3);
242
67
  unsigned I = 0;
243
536
  for (uint8_t C : P.Part4And5) {
244
536
    Out << llvm::format("%02" PRIx8, C);
245
536
    if (++I == 2)
246
67
      Out << "_";
247
536
  }
248
67
}
249
250
void MangleContext::mangleGlobalBlock(const BlockDecl *BD,
251
                                      const NamedDecl *ID,
252
107
                                      raw_ostream &Out) {
253
107
  unsigned discriminator = getBlockId(BD, false);
254
107
  if (ID) {
255
77
    if (shouldMangleDeclName(ID))
256
12
      mangleName(ID, Out);
257
65
    else {
258
65
      Out << ID->getIdentifier()->getName();
259
65
    }
260
77
  }
261
107
  if (discriminator == 0)
262
74
    Out << "_block_invoke";
263
33
  else
264
33
    Out << "_block_invoke_" << discriminator+1;
265
107
}
266
267
void MangleContext::mangleCtorBlock(const CXXConstructorDecl *CD,
268
                                    CXXCtorType CT, const BlockDecl *BD,
269
32
                                    raw_ostream &ResStream) {
270
32
  SmallString<64> Buffer;
271
32
  llvm::raw_svector_ostream Out(Buffer);
272
32
  mangleName(GlobalDecl(CD, CT), Out);
273
32
  mangleFunctionBlock(*this, Buffer, BD, ResStream);
274
32
}
275
276
void MangleContext::mangleDtorBlock(const CXXDestructorDecl *DD,
277
                                    CXXDtorType DT, const BlockDecl *BD,
278
10
                                    raw_ostream &ResStream) {
279
10
  SmallString<64> Buffer;
280
10
  llvm::raw_svector_ostream Out(Buffer);
281
10
  mangleName(GlobalDecl(DD, DT), Out);
282
10
  mangleFunctionBlock(*this, Buffer, BD, ResStream);
283
10
}
284
285
void MangleContext::mangleBlock(const DeclContext *DC, const BlockDecl *BD,
286
926
                                raw_ostream &Out) {
287
926
  assert(!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC));
288
289
0
  SmallString<64> Buffer;
290
926
  llvm::raw_svector_ostream Stream(Buffer);
291
926
  if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) {
292
38
    mangleObjCMethodNameAsSourceName(Method, Stream);
293
888
  } else {
294
888
    assert((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) &&
295
888
           "expected a NamedDecl or BlockDecl");
296
888
    if (isa<BlockDecl>(DC))
297
0
      for (; DC && isa<BlockDecl>(DC); DC = DC->getParent())
298
0
        (void) getBlockId(cast<BlockDecl>(DC), true);
299
888
    assert((isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) &&
300
888
           "expected a TranslationUnitDecl or a NamedDecl");
301
888
    if (const auto *CD = dyn_cast<CXXConstructorDecl>(DC))
302
0
      mangleCtorBlock(CD, /*CT*/ Ctor_Complete, BD, Out);
303
888
    else if (const auto *DD = dyn_cast<CXXDestructorDecl>(DC))
304
0
      mangleDtorBlock(DD, /*DT*/ Dtor_Complete, BD, Out);
305
888
    else if (auto ND = dyn_cast<NamedDecl>(DC)) {
306
888
      if (!shouldMangleDeclName(ND) && 
ND->getIdentifier()670
)
307
670
        Stream << ND->getIdentifier()->getName();
308
218
      else {
309
        // FIXME: We were doing a mangleUnqualifiedName() before, but that's
310
        // a private member of a class that will soon itself be private to the
311
        // Itanium C++ ABI object. What should we do now? Right now, I'm just
312
        // calling the mangleName() method on the MangleContext; is there a
313
        // better way?
314
218
        mangleName(ND, Stream);
315
218
      }
316
888
    }
317
888
  }
318
0
  mangleFunctionBlock(*this, Buffer, BD, Out);
319
926
}
320
321
void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD,
322
                                         raw_ostream &OS,
323
                                         bool includePrefixByte,
324
3.15k
                                         bool includeCategoryNamespace) {
325
3.15k
  if (getASTContext().getLangOpts().ObjCRuntime.isGNUFamily()) {
326
    // This is the mangling we've always used on the GNU runtimes, but it
327
    // has obvious collisions in the face of underscores within class
328
    // names, category names, and selectors; maybe we should improve it.
329
330
84
    OS << (MD->isClassMethod() ? 
"_c_"8
:
"_i_"76
)
331
84
       << MD->getClassInterface()->getName() << '_';
332
333
84
    if (includeCategoryNamespace) {
334
84
      if (auto category = MD->getCategory())
335
2
        OS << category->getName();
336
84
    }
337
84
    OS << '_';
338
339
84
    auto selector = MD->getSelector();
340
84
    for (unsigned slotIndex = 0,
341
84
                  numArgs = selector.getNumArgs(),
342
84
                  slotEnd = std::max(numArgs, 1U);
343
170
           slotIndex != slotEnd; 
++slotIndex86
) {
344
86
      if (auto name = selector.getIdentifierInfoForSlot(slotIndex))
345
86
        OS << name->getName();
346
347
      // Replace all the positions that would've been ':' with '_'.
348
      // That's after each slot except that a unary selector doesn't
349
      // end in ':'.
350
86
      if (numArgs)
351
34
        OS << '_';
352
86
    }
353
354
84
    return;
355
84
  }
356
357
  // \01+[ContainerName(CategoryName) SelectorName]
358
3.06k
  if (includePrefixByte) {
359
2.56k
    OS << '\01';
360
2.56k
  }
361
3.06k
  OS << (MD->isInstanceMethod() ? 
'-'2.78k
:
'+'282
) << '[';
362
3.06k
  if (const auto *CID = MD->getCategory()) {
363
431
    OS << CID->getClassInterface()->getName();
364
431
    if (includeCategoryNamespace) {
365
426
      OS << '(' << *CID << ')';
366
426
    }
367
2.63k
  } else if (const auto *CD =
368
2.63k
                 dyn_cast<ObjCContainerDecl>(MD->getDeclContext())) {
369
2.63k
    OS << CD->getName();
370
2.63k
  } else {
371
0
    llvm_unreachable("Unexpected ObjC method decl context");
372
0
  }
373
3.06k
  OS << ' ';
374
3.06k
  MD->getSelector().print(OS);
375
3.06k
  OS << ']';
376
3.06k
}
377
378
void MangleContext::mangleObjCMethodNameAsSourceName(const ObjCMethodDecl *MD,
379
308
                                                     raw_ostream &Out) {
380
308
  SmallString<64> Name;
381
308
  llvm::raw_svector_ostream OS(Name);
382
383
308
  mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false,
384
308
                       /*includeCategoryNamespace=*/true);
385
308
  Out << OS.str().size() << OS.str();
386
308
}
387
388
class ASTNameGenerator::Implementation {
389
  std::unique_ptr<MangleContext> MC;
390
  llvm::DataLayout DL;
391
392
public:
393
  explicit Implementation(ASTContext &Ctx)
394
      : MC(Ctx.createMangleContext()),
395
416
        DL(Ctx.getTargetInfo().getDataLayoutString()) {}
396
397
3.12k
  bool writeName(const Decl *D, raw_ostream &OS) {
398
    // First apply frontend mangling.
399
3.12k
    SmallString<128> FrontendBuf;
400
3.12k
    llvm::raw_svector_ostream FrontendBufOS(FrontendBuf);
401
3.12k
    if (auto *FD = dyn_cast<FunctionDecl>(D)) {
402
734
      if (FD->isDependentContext())
403
141
        return true;
404
593
      if (writeFuncOrVarName(FD, FrontendBufOS))
405
0
        return true;
406
2.39k
    } else if (auto *VD = dyn_cast<VarDecl>(D)) {
407
525
      if (writeFuncOrVarName(VD, FrontendBufOS))
408
0
        return true;
409
1.86k
    } else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
410
199
      MC->mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false,
411
199
                               /*includeCategoryNamespace=*/true);
412
199
      return false;
413
1.66k
    } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
414
117
      writeObjCClassName(ID, FrontendBufOS);
415
1.55k
    } else {
416
1.55k
      return true;
417
1.55k
    }
418
419
    // Now apply backend mangling.
420
1.23k
    llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL);
421
1.23k
    return false;
422
3.12k
  }
423
424
1.75k
  std::string getName(const Decl *D) {
425
1.75k
    std::string Name;
426
1.75k
    {
427
1.75k
      llvm::raw_string_ostream OS(Name);
428
1.75k
      writeName(D, OS);
429
1.75k
    }
430
1.75k
    return Name;
431
1.75k
  }
432
433
  enum ObjCKind {
434
    ObjCClass,
435
    ObjCMetaclass,
436
  };
437
438
  static StringRef getClassSymbolPrefix(ObjCKind Kind,
439
125
                                        const ASTContext &Context) {
440
125
    if (Context.getLangOpts().ObjCRuntime.isGNUFamily())
441
4
      return Kind == ObjCMetaclass ? 
"_OBJC_METACLASS_"2
:
"_OBJC_CLASS_"2
;
442
121
    return Kind == ObjCMetaclass ? 
"OBJC_METACLASS_$_"2
:
"OBJC_CLASS_$_"119
;
443
125
  }
444
445
4
  std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) {
446
4
    StringRef ClassName;
447
4
    if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD))
448
2
      ClassName = OID->getObjCRuntimeNameAsString();
449
2
    else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD))
450
2
      ClassName = OID->getObjCRuntimeNameAsString();
451
452
4
    if (ClassName.empty())
453
0
      return {};
454
455
8
    
auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string 4
{
456
8
      SmallString<40> Mangled;
457
8
      auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext());
458
8
      llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL);
459
8
      return std::string(Mangled.str());
460
8
    };
461
462
4
    return {
463
4
        Mangle(ObjCClass, ClassName),
464
4
        Mangle(ObjCMetaclass, ClassName),
465
4
    };
466
4
  }
467
468
193
  std::vector<std::string> getAllManglings(const Decl *D) {
469
193
    if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D))
470
4
      return getAllManglings(OCD);
471
472
189
    if (!(isa<CXXRecordDecl>(D) || 
isa<CXXMethodDecl>(D)168
))
473
105
      return {};
474
475
84
    const NamedDecl *ND = cast<NamedDecl>(D);
476
477
84
    ASTContext &Ctx = ND->getASTContext();
478
84
    std::unique_ptr<MangleContext> M(Ctx.createMangleContext());
479
480
84
    std::vector<std::string> Manglings;
481
482
84
    auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) {
483
1
      auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false,
484
1
                                                     /*IsCXXMethod=*/true);
485
1
      auto CC = MD->getType()->castAs<FunctionProtoType>()->getCallConv();
486
1
      return CC == DefaultCC;
487
1
    };
488
489
84
    if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) {
490
22
      Manglings.emplace_back(getMangledStructor(CD, Ctor_Base));
491
492
22
      if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily())
493
18
        if (!CD->getParent()->isAbstract())
494
16
          Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete));
495
496
22
      if (Ctx.getTargetInfo().getCXXABI().isMicrosoft())
497
4
        if (CD->hasAttr<DLLExportAttr>() && 
CD->isDefaultConstructor()1
)
498
1
          if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0))
499
1
            Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure));
500
62
    } else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) {
501
15
      Manglings.emplace_back(getMangledStructor(DD, Dtor_Base));
502
15
      if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) {
503
12
        Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete));
504
12
        if (DD->isVirtual())
505
10
          Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting));
506
12
      }
507
47
    } else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) {
508
26
      Manglings.emplace_back(getName(ND));
509
26
      if (MD->isVirtual())
510
20
        if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD))
511
3
          for (const auto &T : *TIV)
512
3
            Manglings.emplace_back(getMangledThunk(MD, T));
513
26
    }
514
515
84
    return Manglings;
516
189
  }
517
518
private:
519
1.11k
  bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) {
520
1.11k
    if (MC->shouldMangleDeclName(D)) {
521
615
      GlobalDecl GD;
522
615
      if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D))
523
67
        GD = GlobalDecl(CtorD, Ctor_Complete);
524
548
      else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D))
525
42
        GD = GlobalDecl(DtorD, Dtor_Complete);
526
506
      else if (D->hasAttr<CUDAGlobalAttr>())
527
0
        GD = GlobalDecl(cast<FunctionDecl>(D));
528
506
      else
529
506
        GD = GlobalDecl(D);
530
615
      MC->mangleName(GD, OS);
531
615
      return false;
532
615
    } else {
533
503
      IdentifierInfo *II = D->getIdentifier();
534
503
      if (!II)
535
0
        return true;
536
503
      OS << II->getName();
537
503
      return false;
538
503
    }
539
1.11k
  }
540
541
117
  void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) {
542
117
    OS << getClassSymbolPrefix(ObjCClass, D->getASTContext());
543
117
    OS << D->getObjCRuntimeNameAsString();
544
117
  }
545
546
76
  std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) {
547
76
    std::string FrontendBuf;
548
76
    llvm::raw_string_ostream FOS(FrontendBuf);
549
550
76
    GlobalDecl GD;
551
76
    if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND))
552
39
      GD = GlobalDecl(CD, static_cast<CXXCtorType>(StructorType));
553
37
    else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND))
554
37
      GD = GlobalDecl(DD, static_cast<CXXDtorType>(StructorType));
555
76
    MC->mangleName(GD, FOS);
556
557
76
    std::string BackendBuf;
558
76
    llvm::raw_string_ostream BOS(BackendBuf);
559
560
76
    llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
561
562
76
    return BOS.str();
563
76
  }
564
565
3
  std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) {
566
3
    std::string FrontendBuf;
567
3
    llvm::raw_string_ostream FOS(FrontendBuf);
568
569
3
    MC->mangleThunk(MD, T, FOS);
570
571
3
    std::string BackendBuf;
572
3
    llvm::raw_string_ostream BOS(BackendBuf);
573
574
3
    llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
575
576
3
    return BOS.str();
577
3
  }
578
};
579
580
ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx)
581
416
    : Impl(std::make_unique<Implementation>(Ctx)) {}
582
583
416
ASTNameGenerator::~ASTNameGenerator() {}
584
585
1.37k
bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) {
586
1.37k
  return Impl->writeName(D, OS);
587
1.37k
}
588
589
1.72k
std::string ASTNameGenerator::getName(const Decl *D) {
590
1.72k
  return Impl->getName(D);
591
1.72k
}
592
593
193
std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) {
594
193
  return Impl->getAllManglings(D);
595
193
}