clang  12.0.0git
Mangle.cpp
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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"
21 #include "clang/Basic/ABI.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  raw_ostream &Out) {
40  unsigned discriminator = Context.getBlockId(BD, true);
41  if (discriminator == 0)
42  Out << "__" << Outer << "_block_invoke";
43  else
44  Out << "__" << Outer << "_block_invoke_" << discriminator+1;
45 }
46 
47 void MangleContext::anchor() { }
48 
49 enum CCMangling {
56 };
57 
58 static bool isExternC(const NamedDecl *ND) {
59  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
60  return FD->isExternC();
61  if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
62  return VD->isExternC();
63  return false;
64 }
65 
67  const NamedDecl *ND) {
68  const TargetInfo &TI = Context.getTargetInfo();
69  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  if (Triple.isWasm() && !Triple.isOSEmscripten())
76  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND))
77  if (FD->isMain() && FD->hasPrototype() && FD->param_size() == 2)
78  return CCM_WasmMainArgcArgv;
79 
80  if (!Triple.isOSWindows() || !Triple.isX86())
81  return CCM_Other;
82 
83  if (Context.getLangOpts().CPlusPlus && !isExternC(ND) &&
85  return CCM_Other;
86 
87  const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND);
88  if (!FD)
89  return CCM_Other;
90  QualType T = FD->getType();
91 
92  const FunctionType *FT = T->castAs<FunctionType>();
93 
94  CallingConv CC = FT->getCallConv();
95  switch (CC) {
96  default:
97  return CCM_Other;
98  case CC_X86FastCall:
99  return CCM_Fast;
100  case CC_X86StdCall:
101  return CCM_Std;
102  case CC_X86VectorCall:
103  return CCM_Vector;
104  }
105 }
106 
109 
110  CCMangling CC = getCallingConvMangling(ASTContext, D);
111  if (CC != CCM_Other)
112  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.
117  return true;
118 
119  // In C, functions with no attributes never need to be mangled. Fastpath them.
120  if (!getASTContext().getLangOpts().CPlusPlus && !D->hasAttrs())
121  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  if (D->hasAttr<AsmLabelAttr>())
126  return true;
127 
128  // Declarations that don't have identifier names always need to be mangled.
129  if (isa<MSGuidDecl>(D))
130  return true;
131 
132  return shouldMangleCXXName(D);
133 }
134 
135 void MangleContext::mangleName(GlobalDecl GD, raw_ostream &Out) {
136  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  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  if (!ALA->getIsLiteralLabel() || ALA->getLabel().startswith("llvm.")) {
145  Out << ALA->getLabel();
146  return;
147  }
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  char GlobalPrefix =
155  getASTContext().getTargetInfo().getDataLayout().getGlobalPrefix();
156  if (GlobalPrefix)
157  Out << '\01'; // LLVM IR Marker for __asm("foo")
158 
159  Out << ALA->getLabel();
160  return;
161  }
162 
163  if (auto *GD = dyn_cast<MSGuidDecl>(D))
164  return mangleMSGuidDecl(GD, Out);
165 
167  CCMangling CC = getCallingConvMangling(ASTContext, D);
168 
169  if (CC == CCM_WasmMainArgcArgv) {
170  Out << "__main_argc_argv";
171  return;
172  }
173 
174  bool MCXX = shouldMangleCXXName(D);
175  const TargetInfo &TI = Context.getTargetInfo();
176  if (CC == CCM_Other || (MCXX && TI.getCXXABI() == TargetCXXABI::Microsoft)) {
177  if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
178  mangleObjCMethodName(OMD, Out);
179  else
180  mangleCXXName(GD, Out);
181  return;
182  }
183 
184  Out << '\01';
185  if (CC == CCM_Std)
186  Out << '_';
187  else if (CC == CCM_Fast)
188  Out << '@';
189  else if (CC == CCM_RegCall)
190  Out << "__regcall3__";
191 
192  if (!MCXX)
193  Out << D->getIdentifier()->getName();
194  else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
195  mangleObjCMethodName(OMD, Out);
196  else
197  mangleCXXName(GD, Out);
198 
199  const FunctionDecl *FD = cast<FunctionDecl>(D);
200  const FunctionType *FT = FD->getType()->castAs<FunctionType>();
201  const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FT);
202  if (CC == CCM_Vector)
203  Out << '@';
204  Out << '@';
205  if (!Proto) {
206  Out << '0';
207  return;
208  }
209  assert(!Proto->isVariadic());
210  unsigned ArgWords = 0;
211  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD))
212  if (!MD->isStatic())
213  ++ArgWords;
214  for (const auto &AT : Proto->param_types())
215  // Size should be aligned to pointer size.
216  ArgWords +=
217  llvm::alignTo(ASTContext.getTypeSize(AT), TI.getPointerWidth(0)) /
218  TI.getPointerWidth(0);
219  Out << ((TI.getPointerWidth(0) / 8) * ArgWords);
220 }
221 
222 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  MSGuidDecl::Parts P = GD->getParts();
226  Out << llvm::format("_GUID_%08" PRIx32 "_%04" PRIx32 "_%04" PRIx32 "_",
227  P.Part1, P.Part2, P.Part3);
228  unsigned I = 0;
229  for (uint8_t C : P.Part4And5) {
230  Out << llvm::format("%02" PRIx8, C);
231  if (++I == 2)
232  Out << "_";
233  }
234 }
235 
237  const NamedDecl *ID,
238  raw_ostream &Out) {
239  unsigned discriminator = getBlockId(BD, false);
240  if (ID) {
241  if (shouldMangleDeclName(ID))
242  mangleName(ID, Out);
243  else {
244  Out << ID->getIdentifier()->getName();
245  }
246  }
247  if (discriminator == 0)
248  Out << "_block_invoke";
249  else
250  Out << "_block_invoke_" << discriminator+1;
251 }
252 
254  CXXCtorType CT, const BlockDecl *BD,
255  raw_ostream &ResStream) {
256  SmallString<64> Buffer;
257  llvm::raw_svector_ostream Out(Buffer);
258  mangleName(GlobalDecl(CD, CT), Out);
259  mangleFunctionBlock(*this, Buffer, BD, ResStream);
260 }
261 
263  CXXDtorType DT, const BlockDecl *BD,
264  raw_ostream &ResStream) {
265  SmallString<64> Buffer;
266  llvm::raw_svector_ostream Out(Buffer);
267  mangleName(GlobalDecl(DD, DT), Out);
268  mangleFunctionBlock(*this, Buffer, BD, ResStream);
269 }
270 
272  raw_ostream &Out) {
273  assert(!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC));
274 
275  SmallString<64> Buffer;
276  llvm::raw_svector_ostream Stream(Buffer);
277  if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) {
278  mangleObjCMethodName(Method, Stream);
279  } else {
280  assert((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) &&
281  "expected a NamedDecl or BlockDecl");
282  if (isa<BlockDecl>(DC))
283  for (; DC && isa<BlockDecl>(DC); DC = DC->getParent())
284  (void) getBlockId(cast<BlockDecl>(DC), true);
285  assert((isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) &&
286  "expected a TranslationUnitDecl or a NamedDecl");
287  if (const auto *CD = dyn_cast<CXXConstructorDecl>(DC))
288  mangleCtorBlock(CD, /*CT*/ Ctor_Complete, BD, Out);
289  else if (const auto *DD = dyn_cast<CXXDestructorDecl>(DC))
290  mangleDtorBlock(DD, /*DT*/ Dtor_Complete, BD, Out);
291  else if (auto ND = dyn_cast<NamedDecl>(DC)) {
292  if (!shouldMangleDeclName(ND) && ND->getIdentifier())
293  Stream << ND->getIdentifier()->getName();
294  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  mangleName(ND, Stream);
301  }
302  }
303  }
304  mangleFunctionBlock(*this, Buffer, BD, Out);
305 }
306 
308  raw_ostream &OS) {
309  const ObjCContainerDecl *CD =
310  dyn_cast<ObjCContainerDecl>(MD->getDeclContext());
311  assert (CD && "Missing container decl in GetNameForMethod");
312  OS << (MD->isInstanceMethod() ? '-' : '+') << '[';
313  if (const ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(CD)) {
314  OS << CID->getClassInterface()->getName();
315  OS << '(' << *CID << ')';
316  } else {
317  OS << CD->getName();
318  }
319  OS << ' ';
320  MD->getSelector().print(OS);
321  OS << ']';
322 }
323 
325  raw_ostream &Out) {
326  SmallString<64> Name;
327  llvm::raw_svector_ostream OS(Name);
328 
330  Out << OS.str().size() << OS.str();
331 }
332 
334  std::unique_ptr<MangleContext> MC;
335  llvm::DataLayout DL;
336 
337 public:
338  explicit Implementation(ASTContext &Ctx)
339  : MC(Ctx.createMangleContext()), DL(Ctx.getTargetInfo().getDataLayout()) {
340  }
341 
342  bool writeName(const Decl *D, raw_ostream &OS) {
343  // First apply frontend mangling.
344  SmallString<128> FrontendBuf;
345  llvm::raw_svector_ostream FrontendBufOS(FrontendBuf);
346  if (auto *FD = dyn_cast<FunctionDecl>(D)) {
347  if (FD->isDependentContext())
348  return true;
349  if (writeFuncOrVarName(FD, FrontendBufOS))
350  return true;
351  } else if (auto *VD = dyn_cast<VarDecl>(D)) {
352  if (writeFuncOrVarName(VD, FrontendBufOS))
353  return true;
354  } else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) {
355  MC->mangleObjCMethodNameWithoutSize(MD, OS);
356  return false;
357  } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
358  writeObjCClassName(ID, FrontendBufOS);
359  } else {
360  return true;
361  }
362 
363  // Now apply backend mangling.
364  llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL);
365  return false;
366  }
367 
368  std::string getName(const Decl *D) {
369  std::string Name;
370  {
371  llvm::raw_string_ostream OS(Name);
372  writeName(D, OS);
373  }
374  return Name;
375  }
376 
377  enum ObjCKind {
380  };
381 
383  const ASTContext &Context) {
384  if (Context.getLangOpts().ObjCRuntime.isGNUFamily())
385  return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_";
386  return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_";
387  }
388 
389  std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) {
390  StringRef ClassName;
391  if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD))
392  ClassName = OID->getObjCRuntimeNameAsString();
393  else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD))
394  ClassName = OID->getObjCRuntimeNameAsString();
395 
396  if (ClassName.empty())
397  return {};
398 
399  auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string {
400  SmallString<40> Mangled;
401  auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext());
402  llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL);
403  return std::string(Mangled.str());
404  };
405 
406  return {
407  Mangle(ObjCClass, ClassName),
408  Mangle(ObjCMetaclass, ClassName),
409  };
410  }
411 
412  std::vector<std::string> getAllManglings(const Decl *D) {
413  if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D))
414  return getAllManglings(OCD);
415 
416  if (!(isa<CXXRecordDecl>(D) || isa<CXXMethodDecl>(D)))
417  return {};
418 
419  const NamedDecl *ND = cast<NamedDecl>(D);
420 
421  ASTContext &Ctx = ND->getASTContext();
422  std::unique_ptr<MangleContext> M(Ctx.createMangleContext());
423 
424  std::vector<std::string> Manglings;
425 
426  auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) {
427  auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false,
428  /*IsCXXMethod=*/true);
429  auto CC = MD->getType()->castAs<FunctionProtoType>()->getCallConv();
430  return CC == DefaultCC;
431  };
432 
433  if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) {
434  Manglings.emplace_back(getMangledStructor(CD, Ctor_Base));
435 
436  if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily())
437  if (!CD->getParent()->isAbstract())
438  Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete));
439 
440  if (Ctx.getTargetInfo().getCXXABI().isMicrosoft())
441  if (CD->hasAttr<DLLExportAttr>() && CD->isDefaultConstructor())
442  if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0))
443  Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure));
444  } else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) {
445  Manglings.emplace_back(getMangledStructor(DD, Dtor_Base));
446  if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) {
447  Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete));
448  if (DD->isVirtual())
449  Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting));
450  }
451  } else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) {
452  Manglings.emplace_back(getName(ND));
453  if (MD->isVirtual())
454  if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD))
455  for (const auto &T : *TIV)
456  Manglings.emplace_back(getMangledThunk(MD, T));
457  }
458 
459  return Manglings;
460  }
461 
462 private:
463  bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) {
464  if (MC->shouldMangleDeclName(D)) {
465  GlobalDecl GD;
466  if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D))
467  GD = GlobalDecl(CtorD, Ctor_Complete);
468  else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D))
469  GD = GlobalDecl(DtorD, Dtor_Complete);
470  else if (D->hasAttr<CUDAGlobalAttr>())
471  GD = GlobalDecl(cast<FunctionDecl>(D));
472  else
473  GD = GlobalDecl(D);
474  MC->mangleName(GD, OS);
475  return false;
476  } else {
477  IdentifierInfo *II = D->getIdentifier();
478  if (!II)
479  return true;
480  OS << II->getName();
481  return false;
482  }
483  }
484 
485  void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) {
486  OS << getClassSymbolPrefix(ObjCClass, D->getASTContext());
487  OS << D->getObjCRuntimeNameAsString();
488  }
489 
490  std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) {
491  std::string FrontendBuf;
492  llvm::raw_string_ostream FOS(FrontendBuf);
493 
494  GlobalDecl GD;
495  if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND))
496  GD = GlobalDecl(CD, static_cast<CXXCtorType>(StructorType));
497  else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND))
498  GD = GlobalDecl(DD, static_cast<CXXDtorType>(StructorType));
499  MC->mangleName(GD, FOS);
500 
501  std::string BackendBuf;
502  llvm::raw_string_ostream BOS(BackendBuf);
503 
504  llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
505 
506  return BOS.str();
507  }
508 
509  std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) {
510  std::string FrontendBuf;
511  llvm::raw_string_ostream FOS(FrontendBuf);
512 
513  MC->mangleThunk(MD, T, FOS);
514 
515  std::string BackendBuf;
516  llvm::raw_string_ostream BOS(BackendBuf);
517 
518  llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL);
519 
520  return BOS.str();
521  }
522 };
523 
525  : Impl(std::make_unique<Implementation>(Ctx)) {}
526 
528 
529 bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) {
530  return Impl->writeName(D, OS);
531 }
532 
533 std::string ASTNameGenerator::getName(const Decl *D) {
534  return Impl->getName(D);
535 }
536 
537 std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) {
538  return Impl->getAllManglings(D);
539 }
Defines the clang::ASTContext interface.
Represents a function declaration or definition.
Definition: Decl.h:1783
Complete object ctor.
Definition: ABI.h:25
A (possibly-)qualified type.
Definition: Type.h:655
Module * getOwningModuleForLinkage(bool IgnoreLinkage=false) const
Get the module that owns this declaration for linkage purposes.
Definition: Decl.cpp:1486
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3547
const llvm::Triple & getTriple() const
Returns the target triple of the primary target.
Definition: TargetInfo.h:1060
Defines the SourceManager interface.
std::vector< std::string > getAllManglings(const Decl *D)
Definition: Mangle.cpp:412
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:89
Defines the C++ template declaration subclasses.
StringRef P
const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:647
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2413
Default closure variant of a ctor.
Definition: ABI.h:29
void mangleName(GlobalDecl GD, raw_ostream &)
Definition: Mangle.cpp:135
Represents a variable declaration or definition.
Definition: Decl.h:820
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:139
Defines the clang::Expr interface and subclasses for C++ expressions.
void mangleObjCMethodNameWithoutSize(const ObjCMethodDecl *MD, raw_ostream &)
Definition: Mangle.cpp:307
IdentifierInfo * getIdentifier() const
Get the identifier that names this declaration, if there is one.
Definition: Decl.h:244
uint64_t getPointerWidth(unsigned AddrSpace) const
Return the width of pointers on this target, for the specified address space.
Definition: TargetInfo.h:397
static CCMangling getCallingConvMangling(const ASTContext &Context, const NamedDecl *ND)
Definition: Mangle.cpp:66
One of these records is kept for each identifier that is lexed.
TargetCXXABI getCXXABI() const
Get the C++ ABI currently in use.
Definition: TargetInfo.h:1129
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:174
bool writeName(const Decl *D, raw_ostream &OS)
Writes name for D to OS.
Definition: Mangle.cpp:529
Definition: Format.h:2679
Parts getParts() const
Get the decomposed parts of this declaration.
Definition: DeclCXX.h:4052
std::string getName(const Decl *D)
Definition: Mangle.cpp:533
The this pointer adjustment as well as an optional return adjustment for a thunk. ...
Definition: ABI.h:178
bool shouldMangleDeclName(const NamedDecl *D)
Definition: Mangle.cpp:107
Base object ctor.
Definition: ABI.h:26
ObjCContainerDecl - Represents a container for method declarations.
Definition: DeclObjC.h:960
The Microsoft ABI is the ABI used by Microsoft Visual Studio (and compatible compilers).
Definition: TargetCXXABI.h:125
Deleting dtor.
Definition: ABI.h:34
static bool hasDefaultCXXMethodCC(ASTContext &Context, const CXXMethodDecl *MD)
Enums/classes describing ABI related information about constructors, destructors and thunks...
Represents an ObjC class declaration.
Definition: DeclObjC.h:1163
virtual void mangleCXXName(GlobalDecl GD, raw_ostream &)=0
CallingConv getDefaultCallingConvention(bool IsVariadic, bool IsCXXMethod, bool IsBuiltin=false) const
Retrieves the default calling convention for the current target.
bool writeName(const Decl *D, raw_ostream &OS)
Definition: Mangle.cpp:342
virtual void mangleMSGuidDecl(const MSGuidDecl *GD, raw_ostream &)
Definition: Mangle.cpp:222
bool hasAttr() const
Definition: DeclBase.h:547
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3886
std::vector< std::string > getAllManglings(const ObjCContainerDecl *OCD)
Definition: Mangle.cpp:389
Exposes information about the current target.
Definition: TargetInfo.h:179
CXXDtorType
C++ destructor types.
Definition: ABI.h:33
ASTContext & getASTContext() const
Definition: Mangle.h:72
bool isGNUFamily() const
Is this runtime basically of the GNU family of runtimes?
Definition: ObjCRuntime.h:118
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:4064
const T * castAs() const
Member-template castAs<specific type>.
Definition: Type.h:7218
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2679
DeclContext * getDeclContext()
Definition: DeclBase.h:439
Base object dtor.
Definition: ABI.h:36
void print(llvm::raw_ostream &OS) const
Prints the full selector name (e.g. "foo:bar:").
clang::ObjCRuntime ObjCRuntime
Definition: LangOptions.h:254
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1816
bool isInstanceMethod() const
Definition: DeclObjC.h:424
Selector getSelector() const
Definition: DeclObjC.h:323
Parts of a decomposed MSGuidDecl.
Definition: DeclCXX.h:3998
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:270
GlobalDecl - represents a global declaration.
Definition: GlobalDecl.h:54
bool hasAttrs() const
Definition: DeclBase.h:489
static StringRef getClassSymbolPrefix(ObjCKind Kind, const ASTContext &Context)
Definition: Mangle.cpp:382
Kind
unsigned getBlockId(const BlockDecl *BD, bool Local)
Definition: Mangle.h:78
A global _GUID constant.
Definition: DeclCXX.h:4021
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:414
const Decl * getDecl() const
Definition: GlobalDecl.h:101
void mangleDtorBlock(const CXXDestructorDecl *CD, CXXDtorType DT, const BlockDecl *BD, raw_ostream &Out)
Definition: Mangle.cpp:262
virtual bool shouldMangleCXXName(const NamedDecl *D)=0
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:1960
MangleContext - Context for tracking state which persists across multiple calls to the C++ name mangl...
Definition: Mangle.h:44
std::vector< std::string > getAllManglings(const Decl *D)
Definition: Mangle.cpp:537
const llvm::DataLayout & getDataLayout() const
Definition: TargetInfo.h:1064
Complete object dtor.
Definition: ABI.h:35
CXXCtorType
C++ constructor types.
Definition: ABI.h:24
StringRef getName() const
Return the actual identifier string.
void mangleGlobalBlock(const BlockDecl *BD, const NamedDecl *ID, raw_ostream &Out)
Definition: Mangle.cpp:236
void mangleBlock(const DeclContext *DC, const BlockDecl *BD, raw_ostream &Out)
Definition: Mangle.cpp:271
Dataflow Directional Tag Classes.
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1303
static std::string getName(const CallEvent &Call)
void mangleObjCMethodName(const ObjCMethodDecl *MD, raw_ostream &)
Definition: Mangle.cpp:324
uint32_t Part1
{01234567-...
Definition: DeclCXX.h:4000
StringRef getObjCRuntimeNameAsString() const
Produce a name to be used for class&#39;s metadata.
Definition: DeclObjC.cpp:1557
T * getAttr() const
Definition: DeclBase.h:543
static void mangleFunctionBlock(MangleContext &Context, StringRef Outer, const BlockDecl *BD, raw_ostream &Out)
Definition: Mangle.cpp:36
uint64_t getTypeSize(QualType T) const
Return the size of the specified (complete) type T, in bits.
Definition: ASTContext.h:2060
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate.h) and friends (in DeclFriend.h).
CallingConv getCallConv() const
Definition: Type.h:3821
uint8_t Part4And5[8]
...-0123-456789abcdef}
Definition: DeclCXX.h:4006
uint16_t Part3
...-cdef-...
Definition: DeclCXX.h:4004
Defines the clang::TargetInfo interface.
StringRef getName() const
Get the name of identifier for this declaration as a StringRef.
Definition: Decl.h:250
uint16_t Part2
...-89ab-...
Definition: DeclCXX.h:4002
QualType getType() const
Definition: Decl.h:630
This represents a decl that may have a name.
Definition: Decl.h:223
std::string getName(const Decl *D)
Definition: Mangle.cpp:368
CCMangling
Definition: Mangle.cpp:49
void mangleCtorBlock(const CXXConstructorDecl *CD, CXXCtorType CT, const BlockDecl *BD, raw_ostream &Out)
Definition: Mangle.cpp:253
const LangOptions & getLangOpts() const
Definition: ASTContext.h:664
ObjCCategoryImplDecl - An object of this class encapsulates a category @implementation declaration...
Definition: DeclObjC.h:2490
ASTNameGenerator(ASTContext &Ctx)
Definition: Mangle.cpp:524
bool hasExternalFormalLinkage() const
True if this decl has external linkage.
Definition: Decl.h:358
static bool isExternC(const NamedDecl *ND)
Definition: Mangle.cpp:58