Coverage Report

Created: 2020-10-24 06:27

/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
946
                                raw_ostream &Out) {
40
946
  unsigned discriminator = Context.getBlockId(BD, true);
41
946
  if (discriminator == 0)
42
761
    Out << "__" << Outer << "_block_invoke";
43
185
  else
44
185
    Out << "__" << Outer << "_block_invoke_" << discriminator+1;
45
946
}
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
82.8k
static bool isExternC(const NamedDecl *ND) {
59
82.8k
  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
60
77.5k
    return FD->isExternC();
61
5.30k
  if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
62
5.29k
    return VD->isExternC();
63
5
  return false;
64
5
}
65
66
static CCMangling getCallingConvMangling(const ASTContext &Context,
67
5.14M
                                         const NamedDecl *ND) {
68
5.14M
  const TargetInfo &TI = Context.getTargetInfo();
69
5.14M
  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
5.14M
  if (Triple.isWasm() && 
!Triple.isOSEmscripten()1.24k
)
76
1.22k
    if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
77
1.12k
      if (FD->isMain() && 
FD->hasPrototype()5
&&
FD->param_size() == 25
)
78
4
        return CCM_WasmMainArgcArgv;
79
80
5.14M
  if (!Triple.isOSWindows() || 
!Triple.isX86()135k
)
81
5.01M
    return CCM_Other;
82
83
133k
  if (Context.getLangOpts().CPlusPlus && 
!isExternC(ND)82.8k
&&
84
82.6k
      TI.getCXXABI() == TargetCXXABI::Microsoft)
85
72.9k
    return CCM_Other;
86
87
60.8k
  const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND);
88
60.8k
  if (!FD)
89
980
    return CCM_Other;
90
59.8k
  QualType T = FD->getType();
91
92
59.8k
  const FunctionType *FT = T->castAs<FunctionType>();
93
94
59.8k
  CallingConv CC = FT->getCallConv();
95
59.8k
  switch (CC) {
96
59.5k
  default:
97
59.5k
    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
59.8k
  }
105
59.8k
}
106
107
3.92M
bool MangleContext::shouldMangleDeclName(const NamedDecl *D) {
108
3.92M
  const ASTContext &ASTContext = getASTContext();
109
110
3.92M
  CCMangling CC = getCallingConvMangling(ASTContext, D);
111
3.92M
  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
3.92M
  if (!D->hasExternalFormalLinkage() && 
D->getOwningModuleForLinkage()1.97M
)
117
54
    return true;
118
119
  // In C, functions with no attributes never need to be mangled. Fastpath them.
120
3.92M
  if (!getASTContext().getLangOpts().CPlusPlus && 
!D->hasAttrs()1.84M
)
121
113k
    return false;
122
123
  // Any decl can be declared with __asm("foo") on it, and this takes precedence
124
  // over all other naming in the .o file.
125
3.81M
  if (D->hasAttr<AsmLabelAttr>())
126
8.88k
    return true;
127
128
  // Declarations that don't have identifier names always need to be mangled.
129
3.80M
  if (isa<MSGuidDecl>(D))
130
32
    return true;
131
132
3.80M
  return shouldMangleCXXName(D);
133
3.80M
}
134
135
1.22M
void MangleContext::mangleName(GlobalDecl GD, raw_ostream &Out) {
136
1.22M
  const NamedDecl *D = cast<NamedDecl>(GD.getDecl());
137
  // Any decl can be declared with __asm("foo") on it, and this takes precedence
138
  // over all other naming in the .o file.
139
1.22M
  if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
140
    // If we have an asm name, then we use it as the mangling.
141
142
    // If the label isn't literal, or if this is an alias for an LLVM intrinsic,
143
    // do not add a "\01" prefix.
144
8.92k
    if (!ALA->getIsLiteralLabel() || 
ALA->getLabel().startswith("llvm.")8.60k
) {
145
319
      Out << ALA->getLabel();
146
319
      return;
147
319
    }
148
149
    // Adding the prefix can cause problems when one file has a "foo" and
150
    // another has a "\01foo". That is known to happen on ELF with the
151
    // tricks normally used for producing aliases (PR9177). Fortunately the
152
    // llvm mangler on ELF is a nop, so we can just avoid adding the \01
153
    // marker.
154
8.60k
    char GlobalPrefix =
155
8.60k
        getASTContext().getTargetInfo().getDataLayout().getGlobalPrefix();
156
8.60k
    if (GlobalPrefix)
157
8.57k
      Out << '\01'; // LLVM IR Marker for __asm("foo")
158
159
8.60k
    Out << ALA->getLabel();
160
8.60k
    return;
161
8.60k
  }
162
163
1.21M
  if (auto *GD = dyn_cast<MSGuidDecl>(D))
164
32
    return mangleMSGuidDecl(GD, Out);
165
166
1.21M
  const ASTContext &ASTContext = getASTContext();
167
1.21M
  CCMangling CC = getCallingConvMangling(ASTContext, D);
168
169
1.21M
  if (CC == CCM_WasmMainArgcArgv) {
170
2
    Out << "__main_argc_argv";
171
2
    return;
172
2
  }
173
174
1.21M
  bool MCXX = shouldMangleCXXName(D);
175
1.21M
  const TargetInfo &TI = Context.getTargetInfo();
176
1.21M
  if (CC == CCM_Other || 
(149
MCXX149
&&
TI.getCXXABI() == TargetCXXABI::Microsoft27
)) {
177
1.21M
    if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
178
0
      mangleObjCMethodNameAsSourceName(OMD, Out);
179
1.21M
    else
180
1.21M
      mangleCXXName(GD, Out);
181
1.21M
    return;
182
1.21M
  }
183
184
148
  Out << '\01';
185
148
  if (CC == CCM_Std)
186
20
    Out << '_';
187
128
  else if (CC == CCM_Fast)
188
38
    Out << '@';
189
90
  else if (CC == CCM_RegCall)
190
0
    Out << "__regcall3__";
191
192
148
  if (!MCXX)
193
122
    Out << D->getIdentifier()->getName();
194
26
  else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
195
0
    mangleObjCMethodNameAsSourceName(OMD, Out);
196
26
  else
197
26
    mangleCXXName(GD, Out);
198
199
148
  const FunctionDecl *FD = cast<FunctionDecl>(D);
200
148
  const FunctionType *FT = FD->getType()->castAs<FunctionType>();
201
148
  const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FT);
202
148
  if (CC == CCM_Vector)
203
90
    Out << '@';
204
148
  Out << '@';
205
148
  if (!Proto) {
206
5
    Out << '0';
207
5
    return;
208
5
  }
209
143
  assert(!Proto->isVariadic());
210
143
  unsigned ArgWords = 0;
211
143
  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD))
212
4
    if (!MD->isStatic())
213
3
      ++ArgWords;
214
143
  for (const auto &AT : Proto->param_types())
215
    // Size should be aligned to pointer size.
216
250
    ArgWords +=
217
250
        llvm::alignTo(ASTContext.getTypeSize(AT), TI.getPointerWidth(0)) /
218
250
        TI.getPointerWidth(0);
219
143
  Out << ((TI.getPointerWidth(0) / 8) * ArgWords);
220
143
}
221
222
64
void MangleContext::mangleMSGuidDecl(const MSGuidDecl *GD, raw_ostream &Out) {
223
  // For now, follow the MSVC naming convention for GUID objects on all
224
  // targets.
225
64
  MSGuidDecl::Parts P = GD->getParts();
226
64
  Out << llvm::format("_GUID_%08" PRIx32 "_%04" PRIx32 "_%04" PRIx32 "_",
227
64
                      P.Part1, P.Part2, P.Part3);
228
64
  unsigned I = 0;
229
512
  for (uint8_t C : P.Part4And5) {
230
512
    Out << llvm::format("%02" PRIx8, C);
231
512
    if (++I == 2)
232
64
      Out << "_";
233
512
  }
234
64
}
235
236
void MangleContext::mangleGlobalBlock(const BlockDecl *BD,
237
                                      const NamedDecl *ID,
238
107
                                      raw_ostream &Out) {
239
107
  unsigned discriminator = getBlockId(BD, false);
240
107
  if (ID) {
241
77
    if (shouldMangleDeclName(ID))
242
12
      mangleName(ID, Out);
243
65
    else {
244
65
      Out << ID->getIdentifier()->getName();
245
65
    }
246
77
  }
247
107
  if (discriminator == 0)
248
74
    Out << "_block_invoke";
249
33
  else
250
33
    Out << "_block_invoke_" << discriminator+1;
251
107
}
252
253
void MangleContext::mangleCtorBlock(const CXXConstructorDecl *CD,
254
                                    CXXCtorType CT, const BlockDecl *BD,
255
32
                                    raw_ostream &ResStream) {
256
32
  SmallString<64> Buffer;
257
32
  llvm::raw_svector_ostream Out(Buffer);
258
32
  mangleName(GlobalDecl(CD, CT), Out);
259
32
  mangleFunctionBlock(*this, Buffer, BD, ResStream);
260
32
}
261
262
void MangleContext::mangleDtorBlock(const CXXDestructorDecl *DD,
263
                                    CXXDtorType DT, const BlockDecl *BD,
264
10
                                    raw_ostream &ResStream) {
265
10
  SmallString<64> Buffer;
266
10
  llvm::raw_svector_ostream Out(Buffer);
267
10
  mangleName(GlobalDecl(DD, DT), Out);
268
10
  mangleFunctionBlock(*this, Buffer, BD, ResStream);
269
10
}
270
271
void MangleContext::mangleBlock(const DeclContext *DC, const BlockDecl *BD,
272
904
                                raw_ostream &Out) {
273
904
  assert(!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC));
274
275
904
  SmallString<64> Buffer;
276
904
  llvm::raw_svector_ostream Stream(Buffer);
277
904
  if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) {
278
38
    mangleObjCMethodNameAsSourceName(Method, Stream);
279
866
  } else {
280
866
    assert((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) &&
281
866
           "expected a NamedDecl or BlockDecl");
282
866
    if (isa<BlockDecl>(DC))
283
0
      for (; DC && isa<BlockDecl>(DC); DC = DC->getParent())
284
0
        (void) getBlockId(cast<BlockDecl>(DC), true);
285
866
    assert((isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) &&
286
866
           "expected a TranslationUnitDecl or a NamedDecl");
287
866
    if (const auto *CD = dyn_cast<CXXConstructorDecl>(DC))
288
0
      mangleCtorBlock(CD, /*CT*/ Ctor_Complete, BD, Out);
289
866
    else if (const auto *DD = dyn_cast<CXXDestructorDecl>(DC))
290
0
      mangleDtorBlock(DD, /*DT*/ Dtor_Complete, BD, Out);
291
866
    else if (auto ND = dyn_cast<NamedDecl>(DC)) {
292
866
      if (!shouldMangleDeclName(ND) && 
ND->getIdentifier()657
)
293
657
        Stream << ND->getIdentifier()->getName();
294
209
      else {
295
        // FIXME: We were doing a mangleUnqualifiedName() before, but that's
296
        // a private member of a class that will soon itself be private to the
297
        // Itanium C++ ABI object. What should we do now? Right now, I'm just
298
        // calling the mangleName() method on the MangleContext; is there a
299
        // better way?
300
209
        mangleName(ND, Stream);
301
209
      }
302
866
    }
303
866
  }
304
904
  mangleFunctionBlock(*this, Buffer, BD, Out);
305
904
}
306
307
void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD,
308
                                         raw_ostream &OS,
309
                                         bool includePrefixByte,
310
3.17k
                                         bool includeCategoryNamespace) {
311
3.17k
  if (getASTContext().getLangOpts().ObjCRuntime.isGNUFamily()) {
312
    // This is the mangling we've always used on the GNU runtimes, but it
313
    // has obvious collisions in the face of underscores within class
314
    // names, category names, and selectors; maybe we should improve it.
315
316
90
    OS << (MD->isClassMethod() ? 
"_c_"8
: "_i_")
317
98
       << MD->getClassInterface()->getName() << '_';
318
319
98
    if (includeCategoryNamespace) {
320
98
      if (auto category = MD->getCategory())
321
2
        OS << category->getName();
322
98
    }
323
98
    OS << '_';
324
325
98
    auto selector = MD->getSelector();
326
98
    for (unsigned slotIndex = 0,
327
98
                  numArgs = selector.getNumArgs(),
328
98
                  slotEnd = std::max(numArgs, 1U);
329
198
           slotIndex != slotEnd; 
++slotIndex100
) {
330
100
      if (auto name = selector.getIdentifierInfoForSlot(slotIndex))
331
100
        OS << name->getName();
332
333
      // Replace all the positions that would've been ':' with '_'.
334
      // That's after each slot except that a unary selector doesn't
335
      // end in ':'.
336
100
      if (numArgs)
337
41
        OS << '_';
338
100
    }
339
340
98
    return;
341
98
  }
342
343
  // \01+[ContainerName(CategoryName) SelectorName]
344
3.07k
  if (includePrefixByte) {
345
2.55k
    OS << '\01';
346
2.55k
  }
347
2.79k
  OS << (MD->isInstanceMethod() ? '-' : 
'+'278
) << '[';
348
3.07k
  if (const auto *CID = MD->getCategory()) {
349
440
    OS << CID->getClassInterface()->getName();
350
440
    if (includeCategoryNamespace) {
351
435
      OS << '(' << *CID << ')';
352
435
    }
353
2.63k
  } else if (const auto *CD =
354
2.63k
                 dyn_cast<ObjCContainerDecl>(MD->getDeclContext())) {
355
2.63k
    OS << CD->getName();
356
0
  } else {
357
0
    llvm_unreachable("Unexpected ObjC method decl context");
358
0
  }
359
3.07k
  OS << ' ';
360
3.07k
  MD->getSelector().print(OS);
361
3.07k
  OS << ']';
362
3.07k
}
363
364
void MangleContext::mangleObjCMethodNameAsSourceName(const ObjCMethodDecl *MD,
365
314
                                                     raw_ostream &Out) {
366
314
  SmallString<64> Name;
367
314
  llvm::raw_svector_ostream OS(Name);
368
369
314
  mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false,
370
314
                       /*includeCategoryNamespace=*/true);
371
314
  Out << OS.str().size() << OS.str();
372
314
}
373
374
class ASTNameGenerator::Implementation {
375
  std::unique_ptr<MangleContext> MC;
376
  llvm::DataLayout DL;
377
378
public:
379
  explicit Implementation(ASTContext &Ctx)
380
391
      : MC(Ctx.createMangleContext()), DL(Ctx.getTargetInfo().getDataLayout()) {
381
391
  }
382
383
2.68k
  bool writeName(const Decl *D, raw_ostream &OS) {
384
    // First apply frontend mangling.
385
2.68k
    SmallString<128> FrontendBuf;
386
2.68k
    llvm::raw_svector_ostream FrontendBufOS(FrontendBuf);
387
2.68k
    if (auto *FD = dyn_cast<FunctionDecl>(D)) {
388
608
      if (FD->isDependentContext())
389
113
        return true;
390
495
      if (writeFuncOrVarName(FD, FrontendBufOS))
391
0
        return true;
392
2.07k
    } else if (auto *VD = dyn_cast<VarDecl>(D)) {
393
419
      if (writeFuncOrVarName(VD, FrontendBufOS))
394
0
        return true;
395
1.65k
    } else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
396
199
      MC->mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false,
397
199
                               /*includeCategoryNamespace=*/true);
398
199
      return false;
399
1.45k
    } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
400
117
      writeObjCClassName(ID, FrontendBufOS);
401
1.34k
    } else {
402
1.34k
      return true;
403
1.34k
    }
404
405
    // Now apply backend mangling.
406
1.03k
    llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL);
407
1.03k
    return false;
408
1.03k
  }
409
410
1.31k
  std::string getName(const Decl *D) {
411
1.31k
    std::string Name;
412
1.31k
    {
413
1.31k
      llvm::raw_string_ostream OS(Name);
414
1.31k
      writeName(D, OS);
415
1.31k
    }
416
1.31k
    return Name;
417
1.31k
  }
418
419
  enum ObjCKind {
420
    ObjCClass,
421
    ObjCMetaclass,
422
  };
423
424
  static StringRef getClassSymbolPrefix(ObjCKind Kind,
425
125
                                        const ASTContext &Context) {
426
125
    if (Context.getLangOpts().ObjCRuntime.isGNUFamily())
427
4
      return Kind == ObjCMetaclass ? 
"_OBJC_METACLASS_"2
:
"_OBJC_CLASS_"2
;
428
121
    return Kind == ObjCMetaclass ? 
"OBJC_METACLASS_$_"2
:
"OBJC_CLASS_$_"119
;
429
121
  }
430
431
4
  std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) {
432
4
    StringRef ClassName;
433
4
    if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD))
434
2
      ClassName = OID->getObjCRuntimeNameAsString();
435
2
    else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD))
436
2
      ClassName = OID->getObjCRuntimeNameAsString();
437
438
4
    if (ClassName.empty())
439
0
      return {};
440
441
8
    
auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string 4
{
442
8
      SmallString<40> Mangled;
443
8
      auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext());
444
8
      llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL);
445
8
      return std::string(Mangled.str());
446
8
    };
447
448
4
    return {
449
4
        Mangle(ObjCClass, ClassName),
450
4
        Mangle(ObjCMetaclass, ClassName),
451
4
    };
452
4
  }
453
454
193
  std::vector<std::string> getAllManglings(const Decl *D) {
455
193
    if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D))
456
4
      return getAllManglings(OCD);
457
458
189
    if (!(isa<CXXRecordDecl>(D) || 
isa<CXXMethodDecl>(D)168
))
459
105
      return {};
460
461
84
    const NamedDecl *ND = cast<NamedDecl>(D);
462
463
84
    ASTContext &Ctx = ND->getASTContext();
464
84
    std::unique_ptr<MangleContext> M(Ctx.createMangleContext());
465
466
84
    std::vector<std::string> Manglings;
467
468
1
    auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) {
469
1
      auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false,
470
1
                                                     /*IsCXXMethod=*/true);
471
1
      auto CC = MD->getType()->castAs<FunctionProtoType>()->getCallConv();
472
1
      return CC == DefaultCC;
473
1
    };
474
475
84
    if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) {
476
22
      Manglings.emplace_back(getMangledStructor(CD, Ctor_Base));
477
478
22
      if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily())
479
18
        if (!CD->getParent()->isAbstract())
480
16
          Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete));
481
482
22
      if (Ctx.getTargetInfo().getCXXABI().isMicrosoft())
483
4
        if (CD->hasAttr<DLLExportAttr>() && 
CD->isDefaultConstructor()1
)
484
1
          if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0))
485
1
            Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure));
486
62
    } else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) {
487
15
      Manglings.emplace_back(getMangledStructor(DD, Dtor_Base));
488
15
      if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) {
489
12
        Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete));
490
12
        if (DD->isVirtual())
491
10
          Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting));
492
12
      }
493
47
    } else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) {
494
26
      Manglings.emplace_back(getName(ND));
495
26
      if (MD->isVirtual())
496
20
        if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD))
497
3
          for (const auto &T : *TIV)
498
3
            Manglings.emplace_back(getMangledThunk(MD, T));
499
26
    }
500
501
84
    return Manglings;
502
84
  }
503
504
private:
505
914
  bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) {
506
914
    if (MC->shouldMangleDeclName(D)) {
507
500
      GlobalDecl GD;
508
500
      if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D))
509
44
        GD = GlobalDecl(CtorD, Ctor_Complete);
510
456
      else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D))
511
26
        GD = GlobalDecl(DtorD, Dtor_Complete);
512
430
      else if (D->hasAttr<CUDAGlobalAttr>())
513
0
        GD = GlobalDecl(cast<FunctionDecl>(D));
514
430
      else
515
430
        GD = GlobalDecl(D);
516
500
      MC->mangleName(GD, OS);
517
500
      return false;
518
414
    } else {
519
414
      IdentifierInfo *II = D->getIdentifier();
520
414
      if (!II)
521
0
        return true;
522
414
      OS << II->getName();
523
414
      return false;
524
414
    }
525
914
  }
526
527
117
  void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) {
528
117
    OS << getClassSymbolPrefix(ObjCClass, D->getASTContext());
529
117
    OS << D->getObjCRuntimeNameAsString();
530
117
  }
531
532
76
  std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) {
533
76
    std::string FrontendBuf;
534
76
    llvm::raw_string_ostream FOS(FrontendBuf);
535
536
76
    GlobalDecl GD;
537
76
    if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND))
538
39
      GD = GlobalDecl(CD, static_cast<CXXCtorType>(StructorType));
539
37
    else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND))
540
37
      GD = GlobalDecl(DD, static_cast<CXXDtorType>(StructorType));
541
76
    MC->mangleName(GD, FOS);
542
543
76
    std::string BackendBuf;
544
76
    llvm::raw_string_ostream BOS(BackendBuf);
545
546
76
    llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
547
548
76
    return BOS.str();
549
76
  }
550
551
3
  std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) {
552
3
    std::string FrontendBuf;
553
3
    llvm::raw_string_ostream FOS(FrontendBuf);
554
555
3
    MC->mangleThunk(MD, T, FOS);
556
557
3
    std::string BackendBuf;
558
3
    llvm::raw_string_ostream BOS(BackendBuf);
559
560
3
    llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
561
562
3
    return BOS.str();
563
3
  }
564
};
565
566
ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx)
567
391
    : Impl(std::make_unique<Implementation>(Ctx)) {}
568
569
391
ASTNameGenerator::~ASTNameGenerator() {}
570
571
1.36k
bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) {
572
1.36k
  return Impl->writeName(D, OS);
573
1.36k
}
574
575
1.29k
std::string ASTNameGenerator::getName(const Decl *D) {
576
1.29k
  return Impl->getName(D);
577
1.29k
}
578
579
193
std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) {
580
193
  return Impl->getAllManglings(D);
581
193
}