Coverage Report

Created: 2022-07-16 07:03

/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
1.06k
                                raw_ostream &Out) {
40
1.06k
  unsigned discriminator = Context.getBlockId(BD, true);
41
1.06k
  if (discriminator == 0)
42
833
    Out << "__" << Outer << "_block_invoke";
43
235
  else
44
235
    Out << "__" << Outer << "_block_invoke_" << discriminator+1;
45
1.06k
}
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
85.7k
static bool isExternC(const NamedDecl *ND) {
59
85.7k
  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
60
80.3k
    return FD->isExternC();
61
5.43k
  if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
62
5.42k
    return VD->isExternC();
63
9
  return false;
64
5.43k
}
65
66
static CCMangling getCallingConvMangling(const ASTContext &Context,
67
5.91M
                                         const NamedDecl *ND) {
68
5.91M
  const TargetInfo &TI = Context.getTargetInfo();
69
5.91M
  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
5.91M
  if (Triple.isWasm())
74
977
    if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
75
869
      if (FD->isMain() && 
FD->getNumParams() == 210
)
76
8
        return CCM_WasmMainArgcArgv;
77
78
5.91M
  if (!Triple.isOSWindows() || 
!Triple.isX86()143k
)
79
5.76M
    return CCM_Other;
80
81
142k
  if (Context.getLangOpts().CPlusPlus && 
!isExternC(ND)85.7k
&&
82
142k
      
TI.getCXXABI() == TargetCXXABI::Microsoft85.6k
)
83
75.5k
    return CCM_Other;
84
85
66.6k
  const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND);
86
66.6k
  if (!FD)
87
990
    return CCM_Other;
88
65.6k
  QualType T = FD->getType();
89
90
65.6k
  const FunctionType *FT = T->castAs<FunctionType>();
91
92
65.6k
  CallingConv CC = FT->getCallConv();
93
65.6k
  switch (CC) {
94
65.3k
  default:
95
65.3k
    return CCM_Other;
96
87
  case CC_X86FastCall:
97
87
    return CCM_Fast;
98
54
  case CC_X86StdCall:
99
54
    return CCM_Std;
100
187
  case CC_X86VectorCall:
101
187
    return CCM_Vector;
102
65.6k
  }
103
65.6k
}
104
105
4.51M
bool MangleContext::shouldMangleDeclName(const NamedDecl *D) {
106
4.51M
  const ASTContext &ASTContext = getASTContext();
107
108
4.51M
  CCMangling CC = getCallingConvMangling(ASTContext, D);
109
4.51M
  if (CC != CCM_Other)
110
182
    return true;
111
112
  // If the declaration has an owning module for linkage purposes that needs to
113
  // be mangled, we must mangle its name.
114
4.51M
  if (!D->hasExternalFormalLinkage() && 
D->getOwningModuleForLinkage()2.17M
)
115
114
    return true;
116
117
  // C functions with internal linkage have to be mangled with option
118
  // -funique-internal-linkage-names.
119
4.51M
  if (!getASTContext().getLangOpts().CPlusPlus &&
120
4.51M
      
isUniqueInternalLinkageDecl(D)1.80M
)
121
8
    return true;
122
123
  // In C, functions with no attributes never need to be mangled. Fastpath them.
124
4.51M
  if (!getASTContext().getLangOpts().CPlusPlus && 
!D->hasAttrs()1.80M
)
125
106k
    return false;
126
127
  // Any decl can be declared with __asm("foo") on it, and this takes precedence
128
  // over all other naming in the .o file.
129
4.40M
  if (D->hasAttr<AsmLabelAttr>())
130
9.72k
    return true;
131
132
  // Declarations that don't have identifier names always need to be mangled.
133
4.40M
  if (isa<MSGuidDecl>(D))
134
32
    return true;
135
136
4.40M
  return shouldMangleCXXName(D);
137
4.40M
}
138
139
1.40M
void MangleContext::mangleName(GlobalDecl GD, raw_ostream &Out) {
140
1.40M
  const ASTContext &ASTContext = getASTContext();
141
1.40M
  const NamedDecl *D = cast<NamedDecl>(GD.getDecl());
142
143
  // Any decl can be declared with __asm("foo") on it, and this takes precedence
144
  // over all other naming in the .o file.
145
1.40M
  if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
146
    // If we have an asm name, then we use it as the mangling.
147
148
    // If the label isn't literal, or if this is an alias for an LLVM intrinsic,
149
    // do not add a "\01" prefix.
150
9.76k
    if (!ALA->getIsLiteralLabel() || 
ALA->getLabel().startswith("llvm.")9.44k
) {
151
316
      Out << ALA->getLabel();
152
316
      return;
153
316
    }
154
155
    // Adding the prefix can cause problems when one file has a "foo" and
156
    // another has a "\01foo". That is known to happen on ELF with the
157
    // tricks normally used for producing aliases (PR9177). Fortunately the
158
    // llvm mangler on ELF is a nop, so we can just avoid adding the \01
159
    // marker.
160
9.44k
    StringRef UserLabelPrefix =
161
9.44k
        getASTContext().getTargetInfo().getUserLabelPrefix();
162
9.44k
#ifndef NDEBUG
163
9.44k
    char GlobalPrefix =
164
9.44k
        llvm::DataLayout(getASTContext().getTargetInfo().getDataLayoutString())
165
9.44k
            .getGlobalPrefix();
166
9.44k
    assert((UserLabelPrefix.empty() && !GlobalPrefix) ||
167
9.44k
           (UserLabelPrefix.size() == 1 && UserLabelPrefix[0] == GlobalPrefix));
168
0
#endif
169
9.44k
    if (!UserLabelPrefix.empty())
170
9.41k
      Out << '\01'; // LLVM IR Marker for __asm("foo")
171
172
9.44k
    Out << ALA->getLabel();
173
9.44k
    return;
174
9.76k
  }
175
176
1.39M
  if (auto *GD = dyn_cast<MSGuidDecl>(D))
177
32
    return mangleMSGuidDecl(GD, Out);
178
179
1.39M
  CCMangling CC = getCallingConvMangling(ASTContext, D);
180
181
1.39M
  if (CC == CCM_WasmMainArgcArgv) {
182
4
    Out << "__main_argc_argv";
183
4
    return;
184
4
  }
185
186
1.39M
  bool MCXX = shouldMangleCXXName(D);
187
1.39M
  const TargetInfo &TI = Context.getTargetInfo();
188
1.39M
  if (CC == CCM_Other || 
(150
MCXX150
&&
TI.getCXXABI() == TargetCXXABI::Microsoft28
)) {
189
1.39M
    if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
190
0
      mangleObjCMethodNameAsSourceName(OMD, Out);
191
1.39M
    else
192
1.39M
      mangleCXXName(GD, Out);
193
1.39M
    return;
194
1.39M
  }
195
196
149
  Out << '\01';
197
149
  if (CC == CCM_Std)
198
21
    Out << '_';
199
128
  else if (CC == CCM_Fast)
200
38
    Out << '@';
201
90
  else if (CC == CCM_RegCall)
202
0
    Out << "__regcall3__";
203
204
149
  if (!MCXX)
205
122
    Out << D->getIdentifier()->getName();
206
27
  else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
207
0
    mangleObjCMethodNameAsSourceName(OMD, Out);
208
27
  else
209
27
    mangleCXXName(GD, Out);
210
211
149
  const FunctionDecl *FD = cast<FunctionDecl>(D);
212
149
  const FunctionType *FT = FD->getType()->castAs<FunctionType>();
213
149
  const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FT);
214
149
  if (CC == CCM_Vector)
215
90
    Out << '@';
216
149
  Out << '@';
217
149
  if (!Proto) {
218
0
    Out << '0';
219
0
    return;
220
0
  }
221
149
  assert(!Proto->isVariadic());
222
0
  unsigned ArgWords = 0;
223
149
  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD))
224
5
    if (!MD->isStatic())
225
4
      ++ArgWords;
226
251
  for (const auto &AT : Proto->param_types()) {
227
    // If an argument type is incomplete there is no way to get its size to
228
    // correctly encode into the mangling scheme.
229
    // Follow GCCs behaviour by simply breaking out of the loop.
230
251
    if (AT->isIncompleteType())
231
1
      break;
232
    // Size should be aligned to pointer size.
233
250
    ArgWords +=
234
250
        llvm::alignTo(ASTContext.getTypeSize(AT), TI.getPointerWidth(0)) /
235
250
        TI.getPointerWidth(0);
236
250
  }
237
149
  Out << ((TI.getPointerWidth(0) / 8) * ArgWords);
238
149
}
239
240
67
void MangleContext::mangleMSGuidDecl(const MSGuidDecl *GD, raw_ostream &Out) {
241
  // For now, follow the MSVC naming convention for GUID objects on all
242
  // targets.
243
67
  MSGuidDecl::Parts P = GD->getParts();
244
67
  Out << llvm::format("_GUID_%08" PRIx32 "_%04" PRIx32 "_%04" PRIx32 "_",
245
67
                      P.Part1, P.Part2, P.Part3);
246
67
  unsigned I = 0;
247
536
  for (uint8_t C : P.Part4And5) {
248
536
    Out << llvm::format("%02" PRIx8, C);
249
536
    if (++I == 2)
250
67
      Out << "_";
251
536
  }
252
67
}
253
254
void MangleContext::mangleGlobalBlock(const BlockDecl *BD,
255
                                      const NamedDecl *ID,
256
114
                                      raw_ostream &Out) {
257
114
  unsigned discriminator = getBlockId(BD, false);
258
114
  if (ID) {
259
84
    if (shouldMangleDeclName(ID))
260
12
      mangleName(ID, Out);
261
72
    else {
262
72
      Out << ID->getIdentifier()->getName();
263
72
    }
264
84
  }
265
114
  if (discriminator == 0)
266
81
    Out << "_block_invoke";
267
33
  else
268
33
    Out << "_block_invoke_" << discriminator+1;
269
114
}
270
271
void MangleContext::mangleCtorBlock(const CXXConstructorDecl *CD,
272
                                    CXXCtorType CT, const BlockDecl *BD,
273
32
                                    raw_ostream &ResStream) {
274
32
  SmallString<64> Buffer;
275
32
  llvm::raw_svector_ostream Out(Buffer);
276
32
  mangleName(GlobalDecl(CD, CT), Out);
277
32
  mangleFunctionBlock(*this, Buffer, BD, ResStream);
278
32
}
279
280
void MangleContext::mangleDtorBlock(const CXXDestructorDecl *DD,
281
                                    CXXDtorType DT, const BlockDecl *BD,
282
10
                                    raw_ostream &ResStream) {
283
10
  SmallString<64> Buffer;
284
10
  llvm::raw_svector_ostream Out(Buffer);
285
10
  mangleName(GlobalDecl(DD, DT), Out);
286
10
  mangleFunctionBlock(*this, Buffer, BD, ResStream);
287
10
}
288
289
void MangleContext::mangleBlock(const DeclContext *DC, const BlockDecl *BD,
290
1.02k
                                raw_ostream &Out) {
291
1.02k
  assert(!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC));
292
293
0
  SmallString<64> Buffer;
294
1.02k
  llvm::raw_svector_ostream Stream(Buffer);
295
1.02k
  if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) {
296
41
    mangleObjCMethodNameAsSourceName(Method, Stream);
297
985
  } else {
298
985
    assert((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) &&
299
985
           "expected a NamedDecl or BlockDecl");
300
985
    if (isa<BlockDecl>(DC))
301
0
      for (; DC && isa<BlockDecl>(DC); DC = DC->getParent())
302
0
        (void) getBlockId(cast<BlockDecl>(DC), true);
303
985
    assert((isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) &&
304
985
           "expected a TranslationUnitDecl or a NamedDecl");
305
985
    if (const auto *CD = dyn_cast<CXXConstructorDecl>(DC))
306
0
      mangleCtorBlock(CD, /*CT*/ Ctor_Complete, BD, Out);
307
985
    else if (const auto *DD = dyn_cast<CXXDestructorDecl>(DC))
308
0
      mangleDtorBlock(DD, /*DT*/ Dtor_Complete, BD, Out);
309
985
    else if (auto ND = dyn_cast<NamedDecl>(DC)) {
310
985
      if (!shouldMangleDeclName(ND) && 
ND->getIdentifier()752
)
311
752
        Stream << ND->getIdentifier()->getName();
312
233
      else {
313
        // FIXME: We were doing a mangleUnqualifiedName() before, but that's
314
        // a private member of a class that will soon itself be private to the
315
        // Itanium C++ ABI object. What should we do now? Right now, I'm just
316
        // calling the mangleName() method on the MangleContext; is there a
317
        // better way?
318
233
        mangleName(ND, Stream);
319
233
      }
320
985
    }
321
985
  }
322
0
  mangleFunctionBlock(*this, Buffer, BD, Out);
323
1.02k
}
324
325
void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD,
326
                                         raw_ostream &OS,
327
                                         bool includePrefixByte,
328
3.18k
                                         bool includeCategoryNamespace) {
329
3.18k
  if (getASTContext().getLangOpts().ObjCRuntime.isGNUFamily()) {
330
    // This is the mangling we've always used on the GNU runtimes, but it
331
    // has obvious collisions in the face of underscores within class
332
    // names, category names, and selectors; maybe we should improve it.
333
334
88
    OS << (MD->isClassMethod() ? 
"_c_"8
:
"_i_"80
)
335
88
       << MD->getClassInterface()->getName() << '_';
336
337
88
    if (includeCategoryNamespace) {
338
88
      if (auto category = MD->getCategory())
339
2
        OS << category->getName();
340
88
    }
341
88
    OS << '_';
342
343
88
    auto selector = MD->getSelector();
344
88
    for (unsigned slotIndex = 0,
345
88
                  numArgs = selector.getNumArgs(),
346
88
                  slotEnd = std::max(numArgs, 1U);
347
178
           slotIndex != slotEnd; 
++slotIndex90
) {
348
90
      if (auto name = selector.getIdentifierInfoForSlot(slotIndex))
349
90
        OS << name->getName();
350
351
      // Replace all the positions that would've been ':' with '_'.
352
      // That's after each slot except that a unary selector doesn't
353
      // end in ':'.
354
90
      if (numArgs)
355
34
        OS << '_';
356
90
    }
357
358
88
    return;
359
88
  }
360
361
  // \01+[ContainerName(CategoryName) SelectorName]
362
3.09k
  if (includePrefixByte) {
363
2.58k
    OS << '\01';
364
2.58k
  }
365
3.09k
  OS << (MD->isInstanceMethod() ? 
'-'2.80k
:
'+'292
) << '[';
366
3.09k
  if (const auto *CID = MD->getCategory()) {
367
433
    OS << CID->getClassInterface()->getName();
368
433
    if (includeCategoryNamespace) {
369
427
      OS << '(' << *CID << ')';
370
427
    }
371
2.66k
  } else if (const auto *CD =
372
2.66k
                 dyn_cast<ObjCContainerDecl>(MD->getDeclContext())) {
373
2.66k
    OS << CD->getName();
374
2.66k
  } else {
375
0
    llvm_unreachable("Unexpected ObjC method decl context");
376
0
  }
377
3.09k
  OS << ' ';
378
3.09k
  MD->getSelector().print(OS);
379
3.09k
  OS << ']';
380
3.09k
}
381
382
void MangleContext::mangleObjCMethodNameAsSourceName(const ObjCMethodDecl *MD,
383
311
                                                     raw_ostream &Out) {
384
311
  SmallString<64> Name;
385
311
  llvm::raw_svector_ostream OS(Name);
386
387
311
  mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false,
388
311
                       /*includeCategoryNamespace=*/true);
389
311
  Out << OS.str().size() << OS.str();
390
311
}
391
392
class ASTNameGenerator::Implementation {
393
  std::unique_ptr<MangleContext> MC;
394
  llvm::DataLayout DL;
395
396
public:
397
  explicit Implementation(ASTContext &Ctx)
398
      : MC(Ctx.createMangleContext()),
399
420
        DL(Ctx.getTargetInfo().getDataLayoutString()) {}
400
401
2.96k
  bool writeName(const Decl *D, raw_ostream &OS) {
402
    // First apply frontend mangling.
403
2.96k
    SmallString<128> FrontendBuf;
404
2.96k
    llvm::raw_svector_ostream FrontendBufOS(FrontendBuf);
405
2.96k
    if (auto *FD = dyn_cast<FunctionDecl>(D)) {
406
795
      if (FD->isDependentContext())
407
151
        return true;
408
644
      if (writeFuncOrVarName(FD, FrontendBufOS))
409
0
        return true;
410
2.17k
    } else if (auto *VD = dyn_cast<VarDecl>(D)) {
411
209
      if (writeFuncOrVarName(VD, FrontendBufOS))
412
0
        return true;
413
1.96k
    } else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
414
199
      MC->mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false,
415
199
                               /*includeCategoryNamespace=*/true);
416
199
      return false;
417
1.76k
    } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
418
117
      writeObjCClassName(ID, FrontendBufOS);
419
1.64k
    } else {
420
1.64k
      return true;
421
1.64k
    }
422
423
    // Now apply backend mangling.
424
970
    llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL);
425
970
    return false;
426
2.96k
  }
427
428
1.59k
  std::string getName(const Decl *D) {
429
1.59k
    std::string Name;
430
1.59k
    {
431
1.59k
      llvm::raw_string_ostream OS(Name);
432
1.59k
      writeName(D, OS);
433
1.59k
    }
434
1.59k
    return Name;
435
1.59k
  }
436
437
  enum ObjCKind {
438
    ObjCClass,
439
    ObjCMetaclass,
440
  };
441
442
  static StringRef getClassSymbolPrefix(ObjCKind Kind,
443
125
                                        const ASTContext &Context) {
444
125
    if (Context.getLangOpts().ObjCRuntime.isGNUFamily())
445
4
      return Kind == ObjCMetaclass ? 
"_OBJC_METACLASS_"2
:
"_OBJC_CLASS_"2
;
446
121
    return Kind == ObjCMetaclass ? 
"OBJC_METACLASS_$_"2
:
"OBJC_CLASS_$_"119
;
447
125
  }
448
449
4
  std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) {
450
4
    StringRef ClassName;
451
4
    if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD))
452
2
      ClassName = OID->getObjCRuntimeNameAsString();
453
2
    else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD))
454
2
      ClassName = OID->getObjCRuntimeNameAsString();
455
456
4
    if (ClassName.empty())
457
0
      return {};
458
459
8
    
auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string 4
{
460
8
      SmallString<40> Mangled;
461
8
      auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext());
462
8
      llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL);
463
8
      return std::string(Mangled.str());
464
8
    };
465
466
4
    return {
467
4
        Mangle(ObjCClass, ClassName),
468
4
        Mangle(ObjCMetaclass, ClassName),
469
4
    };
470
4
  }
471
472
192
  std::vector<std::string> getAllManglings(const Decl *D) {
473
192
    if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D))
474
4
      return getAllManglings(OCD);
475
476
188
    if (!(isa<CXXRecordDecl>(D) || 
isa<CXXMethodDecl>(D)167
))
477
104
      return {};
478
479
84
    const NamedDecl *ND = cast<NamedDecl>(D);
480
481
84
    ASTContext &Ctx = ND->getASTContext();
482
84
    std::unique_ptr<MangleContext> M(Ctx.createMangleContext());
483
484
84
    std::vector<std::string> Manglings;
485
486
84
    auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) {
487
1
      auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false,
488
1
                                                     /*IsCXXMethod=*/true);
489
1
      auto CC = MD->getType()->castAs<FunctionProtoType>()->getCallConv();
490
1
      return CC == DefaultCC;
491
1
    };
492
493
84
    if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) {
494
22
      Manglings.emplace_back(getMangledStructor(CD, Ctor_Base));
495
496
22
      if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily())
497
18
        if (!CD->getParent()->isAbstract())
498
16
          Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete));
499
500
22
      if (Ctx.getTargetInfo().getCXXABI().isMicrosoft())
501
4
        if (CD->hasAttr<DLLExportAttr>() && 
CD->isDefaultConstructor()1
)
502
1
          if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0))
503
1
            Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure));
504
62
    } else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) {
505
15
      Manglings.emplace_back(getMangledStructor(DD, Dtor_Base));
506
15
      if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) {
507
12
        Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete));
508
12
        if (DD->isVirtual())
509
10
          Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting));
510
12
      }
511
47
    } else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) {
512
26
      Manglings.emplace_back(getName(ND));
513
26
      if (MD->isVirtual())
514
20
        if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD))
515
3
          for (const auto &T : *TIV)
516
3
            Manglings.emplace_back(getMangledThunk(MD, T));
517
26
    }
518
519
84
    return Manglings;
520
188
  }
521
522
private:
523
853
  bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) {
524
853
    if (MC->shouldMangleDeclName(D)) {
525
523
      GlobalDecl GD;
526
523
      if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D))
527
67
        GD = GlobalDecl(CtorD, Ctor_Complete);
528
456
      else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D))
529
92
        GD = GlobalDecl(DtorD, Dtor_Complete);
530
364
      else if (D->hasAttr<CUDAGlobalAttr>())
531
0
        GD = GlobalDecl(cast<FunctionDecl>(D));
532
364
      else
533
364
        GD = GlobalDecl(D);
534
523
      MC->mangleName(GD, OS);
535
523
      return false;
536
523
    } else {
537
330
      IdentifierInfo *II = D->getIdentifier();
538
330
      if (!II)
539
0
        return true;
540
330
      OS << II->getName();
541
330
      return false;
542
330
    }
543
853
  }
544
545
117
  void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) {
546
117
    OS << getClassSymbolPrefix(ObjCClass, D->getASTContext());
547
117
    OS << D->getObjCRuntimeNameAsString();
548
117
  }
549
550
76
  std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) {
551
76
    std::string FrontendBuf;
552
76
    llvm::raw_string_ostream FOS(FrontendBuf);
553
554
76
    GlobalDecl GD;
555
76
    if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND))
556
39
      GD = GlobalDecl(CD, static_cast<CXXCtorType>(StructorType));
557
37
    else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND))
558
37
      GD = GlobalDecl(DD, static_cast<CXXDtorType>(StructorType));
559
76
    MC->mangleName(GD, FOS);
560
561
76
    std::string BackendBuf;
562
76
    llvm::raw_string_ostream BOS(BackendBuf);
563
564
76
    llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
565
566
76
    return BOS.str();
567
76
  }
568
569
3
  std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) {
570
3
    std::string FrontendBuf;
571
3
    llvm::raw_string_ostream FOS(FrontendBuf);
572
573
3
    MC->mangleThunk(MD, T, FOS);
574
575
3
    std::string BackendBuf;
576
3
    llvm::raw_string_ostream BOS(BackendBuf);
577
578
3
    llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
579
580
3
    return BOS.str();
581
3
  }
582
};
583
584
ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx)
585
420
    : Impl(std::make_unique<Implementation>(Ctx)) {}
586
587
420
ASTNameGenerator::~ASTNameGenerator() {}
588
589
1.37k
bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) {
590
1.37k
  return Impl->writeName(D, OS);
591
1.37k
}
592
593
1.56k
std::string ASTNameGenerator::getName(const Decl *D) {
594
1.56k
  return Impl->getName(D);
595
1.56k
}
596
597
192
std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) {
598
192
  return Impl->getAllManglings(D);
599
192
}