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CodeGenModule.h
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1 //===--- CodeGenModule.h - Per-Module state for LLVM CodeGen ----*- 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 // This is the internal per-translation-unit state used for llvm translation.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
14 #define LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
15 
16 #include "CGVTables.h"
17 #include "CodeGenTypeCache.h"
18 #include "CodeGenTypes.h"
19 #include "SanitizerMetadata.h"
20 #include "clang/AST/Attr.h"
21 #include "clang/AST/DeclCXX.h"
22 #include "clang/AST/DeclObjC.h"
23 #include "clang/AST/DeclOpenMP.h"
24 #include "clang/AST/GlobalDecl.h"
25 #include "clang/AST/Mangle.h"
26 #include "clang/Basic/ABI.h"
28 #include "clang/Basic/Module.h"
30 #include "clang/Basic/XRayLists.h"
31 #include "llvm/ADT/DenseMap.h"
32 #include "llvm/ADT/SetVector.h"
33 #include "llvm/ADT/SmallPtrSet.h"
34 #include "llvm/ADT/StringMap.h"
35 #include "llvm/IR/Module.h"
36 #include "llvm/IR/ValueHandle.h"
37 #include "llvm/Transforms/Utils/SanitizerStats.h"
38 
39 namespace llvm {
40 class Module;
41 class Constant;
42 class ConstantInt;
43 class Function;
44 class GlobalValue;
45 class DataLayout;
46 class FunctionType;
47 class LLVMContext;
48 class IndexedInstrProfReader;
49 }
50 
51 namespace clang {
52 class ASTContext;
53 class AtomicType;
54 class FunctionDecl;
55 class IdentifierInfo;
56 class ObjCMethodDecl;
57 class ObjCImplementationDecl;
58 class ObjCCategoryImplDecl;
59 class ObjCProtocolDecl;
60 class ObjCEncodeExpr;
61 class BlockExpr;
62 class CharUnits;
63 class Decl;
64 class Expr;
65 class Stmt;
66 class InitListExpr;
67 class StringLiteral;
68 class NamedDecl;
69 class ValueDecl;
70 class VarDecl;
71 class LangOptions;
72 class CodeGenOptions;
73 class HeaderSearchOptions;
74 class PreprocessorOptions;
75 class DiagnosticsEngine;
76 class AnnotateAttr;
77 class CXXDestructorDecl;
78 class Module;
79 class CoverageSourceInfo;
80 
81 namespace CodeGen {
82 
83 class CallArgList;
84 class CodeGenFunction;
85 class CodeGenTBAA;
86 class CGCXXABI;
87 class CGDebugInfo;
88 class CGObjCRuntime;
89 class CGOpenCLRuntime;
90 class CGOpenMPRuntime;
91 class CGCUDARuntime;
92 class BlockFieldFlags;
93 class FunctionArgList;
94 class CoverageMappingModuleGen;
95 class TargetCodeGenInfo;
96 
97 enum ForDefinition_t : bool {
100 };
101 
103  unsigned int priority;
104  unsigned int lex_order;
105  OrderGlobalInits(unsigned int p, unsigned int l)
106  : priority(p), lex_order(l) {}
107 
108  bool operator==(const OrderGlobalInits &RHS) const {
109  return priority == RHS.priority && lex_order == RHS.lex_order;
110  }
111 
112  bool operator<(const OrderGlobalInits &RHS) const {
113  return std::tie(priority, lex_order) <
114  std::tie(RHS.priority, RHS.lex_order);
115  }
116 };
117 
119  ObjCEntrypoints() { memset(this, 0, sizeof(*this)); }
120 
121  /// void objc_alloc(id);
122  llvm::FunctionCallee objc_alloc;
123 
124  /// void objc_allocWithZone(id);
125  llvm::FunctionCallee objc_allocWithZone;
126 
127  /// void objc_alloc_init(id);
128  llvm::FunctionCallee objc_alloc_init;
129 
130  /// void objc_autoreleasePoolPop(void*);
131  llvm::FunctionCallee objc_autoreleasePoolPop;
132 
133  /// void objc_autoreleasePoolPop(void*);
134  /// Note this method is used when we are using exception handling
135  llvm::FunctionCallee objc_autoreleasePoolPopInvoke;
136 
137  /// void *objc_autoreleasePoolPush(void);
138  llvm::Function *objc_autoreleasePoolPush;
139 
140  /// id objc_autorelease(id);
141  llvm::Function *objc_autorelease;
142 
143  /// id objc_autorelease(id);
144  /// Note this is the runtime method not the intrinsic.
145  llvm::FunctionCallee objc_autoreleaseRuntimeFunction;
146 
147  /// id objc_autoreleaseReturnValue(id);
149 
150  /// void objc_copyWeak(id *dest, id *src);
151  llvm::Function *objc_copyWeak;
152 
153  /// void objc_destroyWeak(id*);
154  llvm::Function *objc_destroyWeak;
155 
156  /// id objc_initWeak(id*, id);
157  llvm::Function *objc_initWeak;
158 
159  /// id objc_loadWeak(id*);
160  llvm::Function *objc_loadWeak;
161 
162  /// id objc_loadWeakRetained(id*);
163  llvm::Function *objc_loadWeakRetained;
164 
165  /// void objc_moveWeak(id *dest, id *src);
166  llvm::Function *objc_moveWeak;
167 
168  /// id objc_retain(id);
169  llvm::Function *objc_retain;
170 
171  /// id objc_retain(id);
172  /// Note this is the runtime method not the intrinsic.
173  llvm::FunctionCallee objc_retainRuntimeFunction;
174 
175  /// id objc_retainAutorelease(id);
176  llvm::Function *objc_retainAutorelease;
177 
178  /// id objc_retainAutoreleaseReturnValue(id);
180 
181  /// id objc_retainAutoreleasedReturnValue(id);
183 
184  /// id objc_retainBlock(id);
185  llvm::Function *objc_retainBlock;
186 
187  /// void objc_release(id);
188  llvm::Function *objc_release;
189 
190  /// void objc_release(id);
191  /// Note this is the runtime method not the intrinsic.
192  llvm::FunctionCallee objc_releaseRuntimeFunction;
193 
194  /// void objc_storeStrong(id*, id);
195  llvm::Function *objc_storeStrong;
196 
197  /// id objc_storeWeak(id*, id);
198  llvm::Function *objc_storeWeak;
199 
200  /// id objc_unsafeClaimAutoreleasedReturnValue(id);
202 
203  /// A void(void) inline asm to use to mark that the return value of
204  /// a call will be immediately retain.
206 
207  /// void clang.arc.use(...);
208  llvm::Function *clang_arc_use;
209 };
210 
211 /// This class records statistics on instrumentation based profiling.
213  uint32_t VisitedInMainFile;
214  uint32_t MissingInMainFile;
215  uint32_t Visited;
216  uint32_t Missing;
217  uint32_t Mismatched;
218 
219 public:
221  : VisitedInMainFile(0), MissingInMainFile(0), Visited(0), Missing(0),
222  Mismatched(0) {}
223  /// Record that we've visited a function and whether or not that function was
224  /// in the main source file.
225  void addVisited(bool MainFile) {
226  if (MainFile)
227  ++VisitedInMainFile;
228  ++Visited;
229  }
230  /// Record that a function we've visited has no profile data.
231  void addMissing(bool MainFile) {
232  if (MainFile)
233  ++MissingInMainFile;
234  ++Missing;
235  }
236  /// Record that a function we've visited has mismatched profile data.
237  void addMismatched(bool MainFile) { ++Mismatched; }
238  /// Whether or not the stats we've gathered indicate any potential problems.
239  bool hasDiagnostics() { return Missing || Mismatched; }
240  /// Report potential problems we've found to \c Diags.
241  void reportDiagnostics(DiagnosticsEngine &Diags, StringRef MainFile);
242 };
243 
244 /// A pair of helper functions for a __block variable.
245 class BlockByrefHelpers : public llvm::FoldingSetNode {
246  // MSVC requires this type to be complete in order to process this
247  // header.
248 public:
249  llvm::Constant *CopyHelper;
250  llvm::Constant *DisposeHelper;
251 
252  /// The alignment of the field. This is important because
253  /// different offsets to the field within the byref struct need to
254  /// have different helper functions.
256 
258  : CopyHelper(nullptr), DisposeHelper(nullptr), Alignment(alignment) {}
259  BlockByrefHelpers(const BlockByrefHelpers &) = default;
260  virtual ~BlockByrefHelpers();
261 
262  void Profile(llvm::FoldingSetNodeID &id) const {
263  id.AddInteger(Alignment.getQuantity());
264  profileImpl(id);
265  }
266  virtual void profileImpl(llvm::FoldingSetNodeID &id) const = 0;
267 
268  virtual bool needsCopy() const { return true; }
269  virtual void emitCopy(CodeGenFunction &CGF, Address dest, Address src) = 0;
270 
271  virtual bool needsDispose() const { return true; }
272  virtual void emitDispose(CodeGenFunction &CGF, Address field) = 0;
273 };
274 
275 /// This class organizes the cross-function state that is used while generating
276 /// LLVM code.
278  CodeGenModule(const CodeGenModule &) = delete;
279  void operator=(const CodeGenModule &) = delete;
280 
281 public:
282  struct Structor {
283  Structor() : Priority(0), Initializer(nullptr), AssociatedData(nullptr) {}
284  Structor(int Priority, llvm::Constant *Initializer,
285  llvm::Constant *AssociatedData)
286  : Priority(Priority), Initializer(Initializer),
287  AssociatedData(AssociatedData) {}
288  int Priority;
289  llvm::Constant *Initializer;
290  llvm::Constant *AssociatedData;
291  };
292 
293  typedef std::vector<Structor> CtorList;
294 
295 private:
296  ASTContext &Context;
297  const LangOptions &LangOpts;
298  const HeaderSearchOptions &HeaderSearchOpts; // Only used for debug info.
299  const PreprocessorOptions &PreprocessorOpts; // Only used for debug info.
300  const CodeGenOptions &CodeGenOpts;
301  llvm::Module &TheModule;
302  DiagnosticsEngine &Diags;
303  const TargetInfo &Target;
304  std::unique_ptr<CGCXXABI> ABI;
305  llvm::LLVMContext &VMContext;
306 
307  std::unique_ptr<CodeGenTBAA> TBAA;
308 
309  mutable std::unique_ptr<TargetCodeGenInfo> TheTargetCodeGenInfo;
310 
311  // This should not be moved earlier, since its initialization depends on some
312  // of the previous reference members being already initialized and also checks
313  // if TheTargetCodeGenInfo is NULL
314  CodeGenTypes Types;
315 
316  /// Holds information about C++ vtables.
317  CodeGenVTables VTables;
318 
319  std::unique_ptr<CGObjCRuntime> ObjCRuntime;
320  std::unique_ptr<CGOpenCLRuntime> OpenCLRuntime;
321  std::unique_ptr<CGOpenMPRuntime> OpenMPRuntime;
322  std::unique_ptr<CGCUDARuntime> CUDARuntime;
323  std::unique_ptr<CGDebugInfo> DebugInfo;
324  std::unique_ptr<ObjCEntrypoints> ObjCData;
325  llvm::MDNode *NoObjCARCExceptionsMetadata = nullptr;
326  std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader;
327  InstrProfStats PGOStats;
328  std::unique_ptr<llvm::SanitizerStatReport> SanStats;
329 
330  // A set of references that have only been seen via a weakref so far. This is
331  // used to remove the weak of the reference if we ever see a direct reference
332  // or a definition.
333  llvm::SmallPtrSet<llvm::GlobalValue*, 10> WeakRefReferences;
334 
335  /// This contains all the decls which have definitions but/ which are deferred
336  /// for emission and therefore should only be output if they are actually
337  /// used. If a decl is in this, then it is known to have not been referenced
338  /// yet.
339  std::map<StringRef, GlobalDecl> DeferredDecls;
340 
341  /// This is a list of deferred decls which we have seen that *are* actually
342  /// referenced. These get code generated when the module is done.
343  std::vector<GlobalDecl> DeferredDeclsToEmit;
344  void addDeferredDeclToEmit(GlobalDecl GD) {
345  DeferredDeclsToEmit.emplace_back(GD);
346  }
347 
348  /// List of alias we have emitted. Used to make sure that what they point to
349  /// is defined once we get to the end of the of the translation unit.
350  std::vector<GlobalDecl> Aliases;
351 
352  /// List of multiversion functions that have to be emitted. Used to make sure
353  /// we properly emit the iFunc.
354  std::vector<GlobalDecl> MultiVersionFuncs;
355 
356  typedef llvm::StringMap<llvm::TrackingVH<llvm::Constant> > ReplacementsTy;
357  ReplacementsTy Replacements;
358 
359  /// List of global values to be replaced with something else. Used when we
360  /// want to replace a GlobalValue but can't identify it by its mangled name
361  /// anymore (because the name is already taken).
363  GlobalValReplacements;
364 
365  /// Variables for which we've emitted globals containing their constant
366  /// values along with the corresponding globals, for opportunistic reuse.
367  llvm::DenseMap<const VarDecl*, llvm::GlobalVariable*> InitializerConstants;
368 
369  /// Set of global decls for which we already diagnosed mangled name conflict.
370  /// Required to not issue a warning (on a mangling conflict) multiple times
371  /// for the same decl.
372  llvm::DenseSet<GlobalDecl> DiagnosedConflictingDefinitions;
373 
374  /// A queue of (optional) vtables to consider emitting.
375  std::vector<const CXXRecordDecl*> DeferredVTables;
376 
377  /// A queue of (optional) vtables that may be emitted opportunistically.
378  std::vector<const CXXRecordDecl *> OpportunisticVTables;
379 
380  /// List of global values which are required to be present in the object file;
381  /// bitcast to i8*. This is used for forcing visibility of symbols which may
382  /// otherwise be optimized out.
383  std::vector<llvm::WeakTrackingVH> LLVMUsed;
384  std::vector<llvm::WeakTrackingVH> LLVMCompilerUsed;
385 
386  /// Store the list of global constructors and their respective priorities to
387  /// be emitted when the translation unit is complete.
388  CtorList GlobalCtors;
389 
390  /// Store the list of global destructors and their respective priorities to be
391  /// emitted when the translation unit is complete.
392  CtorList GlobalDtors;
393 
394  /// An ordered map of canonical GlobalDecls to their mangled names.
395  llvm::MapVector<GlobalDecl, StringRef> MangledDeclNames;
396  llvm::StringMap<GlobalDecl, llvm::BumpPtrAllocator> Manglings;
397 
398  // An ordered map of canonical GlobalDecls paired with the cpu-index for
399  // cpu-specific name manglings.
400  llvm::MapVector<std::pair<GlobalDecl, unsigned>, StringRef>
401  CPUSpecificMangledDeclNames;
402  llvm::StringMap<std::pair<GlobalDecl, unsigned>, llvm::BumpPtrAllocator>
403  CPUSpecificManglings;
404 
405  /// Global annotations.
406  std::vector<llvm::Constant*> Annotations;
407 
408  /// Map used to get unique annotation strings.
409  llvm::StringMap<llvm::Constant*> AnnotationStrings;
410 
411  llvm::StringMap<llvm::GlobalVariable *> CFConstantStringMap;
412 
413  llvm::DenseMap<llvm::Constant *, llvm::GlobalVariable *> ConstantStringMap;
414  llvm::DenseMap<const Decl*, llvm::Constant *> StaticLocalDeclMap;
415  llvm::DenseMap<const Decl*, llvm::GlobalVariable*> StaticLocalDeclGuardMap;
416  llvm::DenseMap<const Expr*, llvm::Constant *> MaterializedGlobalTemporaryMap;
417 
418  llvm::DenseMap<QualType, llvm::Constant *> AtomicSetterHelperFnMap;
419  llvm::DenseMap<QualType, llvm::Constant *> AtomicGetterHelperFnMap;
420 
421  /// Map used to get unique type descriptor constants for sanitizers.
422  llvm::DenseMap<QualType, llvm::Constant *> TypeDescriptorMap;
423 
424  /// Map used to track internal linkage functions declared within
425  /// extern "C" regions.
426  typedef llvm::MapVector<IdentifierInfo *,
427  llvm::GlobalValue *> StaticExternCMap;
428  StaticExternCMap StaticExternCValues;
429 
430  /// thread_local variables defined or used in this TU.
431  std::vector<const VarDecl *> CXXThreadLocals;
432 
433  /// thread_local variables with initializers that need to run
434  /// before any thread_local variable in this TU is odr-used.
435  std::vector<llvm::Function *> CXXThreadLocalInits;
436  std::vector<const VarDecl *> CXXThreadLocalInitVars;
437 
438  /// Global variables with initializers that need to run before main.
439  std::vector<llvm::Function *> CXXGlobalInits;
440 
441  /// When a C++ decl with an initializer is deferred, null is
442  /// appended to CXXGlobalInits, and the index of that null is placed
443  /// here so that the initializer will be performed in the correct
444  /// order. Once the decl is emitted, the index is replaced with ~0U to ensure
445  /// that we don't re-emit the initializer.
446  llvm::DenseMap<const Decl*, unsigned> DelayedCXXInitPosition;
447 
448  typedef std::pair<OrderGlobalInits, llvm::Function*> GlobalInitData;
449 
450  struct GlobalInitPriorityCmp {
451  bool operator()(const GlobalInitData &LHS,
452  const GlobalInitData &RHS) const {
453  return LHS.first.priority < RHS.first.priority;
454  }
455  };
456 
457  /// Global variables with initializers whose order of initialization is set by
458  /// init_priority attribute.
459  SmallVector<GlobalInitData, 8> PrioritizedCXXGlobalInits;
460 
461  /// Global destructor functions and arguments that need to run on termination.
462  std::vector<
463  std::tuple<llvm::FunctionType *, llvm::WeakTrackingVH, llvm::Constant *>>
464  CXXGlobalDtors;
465 
466  /// The complete set of modules that has been imported.
467  llvm::SetVector<clang::Module *> ImportedModules;
468 
469  /// The set of modules for which the module initializers
470  /// have been emitted.
471  llvm::SmallPtrSet<clang::Module *, 16> EmittedModuleInitializers;
472 
473  /// A vector of metadata strings for linker options.
474  SmallVector<llvm::MDNode *, 16> LinkerOptionsMetadata;
475 
476  /// A vector of metadata strings for dependent libraries for ELF.
477  SmallVector<llvm::MDNode *, 16> ELFDependentLibraries;
478 
479  /// @name Cache for Objective-C runtime types
480  /// @{
481 
482  /// Cached reference to the class for constant strings. This value has type
483  /// int * but is actually an Obj-C class pointer.
484  llvm::WeakTrackingVH CFConstantStringClassRef;
485 
486  /// The type used to describe the state of a fast enumeration in
487  /// Objective-C's for..in loop.
488  QualType ObjCFastEnumerationStateType;
489 
490  /// @}
491 
492  /// Lazily create the Objective-C runtime
493  void createObjCRuntime();
494 
495  void createOpenCLRuntime();
496  void createOpenMPRuntime();
497  void createCUDARuntime();
498 
499  bool isTriviallyRecursive(const FunctionDecl *F);
500  bool shouldEmitFunction(GlobalDecl GD);
501  bool shouldOpportunisticallyEmitVTables();
502  /// Map used to be sure we don't emit the same CompoundLiteral twice.
503  llvm::DenseMap<const CompoundLiteralExpr *, llvm::GlobalVariable *>
504  EmittedCompoundLiterals;
505 
506  /// Map of the global blocks we've emitted, so that we don't have to re-emit
507  /// them if the constexpr evaluator gets aggressive.
508  llvm::DenseMap<const BlockExpr *, llvm::Constant *> EmittedGlobalBlocks;
509 
510  /// @name Cache for Blocks Runtime Globals
511  /// @{
512 
513  llvm::Constant *NSConcreteGlobalBlock = nullptr;
514  llvm::Constant *NSConcreteStackBlock = nullptr;
515 
516  llvm::FunctionCallee BlockObjectAssign = nullptr;
517  llvm::FunctionCallee BlockObjectDispose = nullptr;
518 
519  llvm::Type *BlockDescriptorType = nullptr;
520  llvm::Type *GenericBlockLiteralType = nullptr;
521 
522  struct {
524  } Block;
525 
526  /// void @llvm.lifetime.start(i64 %size, i8* nocapture <ptr>)
527  llvm::Function *LifetimeStartFn = nullptr;
528 
529  /// void @llvm.lifetime.end(i64 %size, i8* nocapture <ptr>)
530  llvm::Function *LifetimeEndFn = nullptr;
531 
532  GlobalDecl initializedGlobalDecl;
533 
534  std::unique_ptr<SanitizerMetadata> SanitizerMD;
535 
536  /// @}
537 
538  llvm::MapVector<const Decl *, bool> DeferredEmptyCoverageMappingDecls;
539 
540  std::unique_ptr<CoverageMappingModuleGen> CoverageMapping;
541 
542  /// Mapping from canonical types to their metadata identifiers. We need to
543  /// maintain this mapping because identifiers may be formed from distinct
544  /// MDNodes.
545  typedef llvm::DenseMap<QualType, llvm::Metadata *> MetadataTypeMap;
546  MetadataTypeMap MetadataIdMap;
547  MetadataTypeMap VirtualMetadataIdMap;
548  MetadataTypeMap GeneralizedMetadataIdMap;
549 
550 public:
551  CodeGenModule(ASTContext &C, const HeaderSearchOptions &headersearchopts,
552  const PreprocessorOptions &ppopts,
553  const CodeGenOptions &CodeGenOpts, llvm::Module &M,
554  DiagnosticsEngine &Diags,
555  CoverageSourceInfo *CoverageInfo = nullptr);
556 
557  ~CodeGenModule();
558 
559  void clear();
560 
561  /// Finalize LLVM code generation.
562  void Release();
563 
564  /// Return true if we should emit location information for expressions.
565  bool getExpressionLocationsEnabled() const;
566 
567  /// Return a reference to the configured Objective-C runtime.
569  if (!ObjCRuntime) createObjCRuntime();
570  return *ObjCRuntime;
571  }
572 
573  /// Return true iff an Objective-C runtime has been configured.
574  bool hasObjCRuntime() { return !!ObjCRuntime; }
575 
576  /// Return a reference to the configured OpenCL runtime.
578  assert(OpenCLRuntime != nullptr);
579  return *OpenCLRuntime;
580  }
581 
582  /// Return a reference to the configured OpenMP runtime.
584  assert(OpenMPRuntime != nullptr);
585  return *OpenMPRuntime;
586  }
587 
588  /// Return a reference to the configured CUDA runtime.
590  assert(CUDARuntime != nullptr);
591  return *CUDARuntime;
592  }
593 
595  assert(ObjCData != nullptr);
596  return *ObjCData;
597  }
598 
599  // Version checking function, used to implement ObjC's @available:
600  // i32 @__isOSVersionAtLeast(i32, i32, i32)
601  llvm::FunctionCallee IsOSVersionAtLeastFn = nullptr;
602 
603  InstrProfStats &getPGOStats() { return PGOStats; }
604  llvm::IndexedInstrProfReader *getPGOReader() const { return PGOReader.get(); }
605 
607  return CoverageMapping.get();
608  }
609 
610  llvm::Constant *getStaticLocalDeclAddress(const VarDecl *D) {
611  return StaticLocalDeclMap[D];
612  }
614  llvm::Constant *C) {
615  StaticLocalDeclMap[D] = C;
616  }
617 
618  llvm::Constant *
619  getOrCreateStaticVarDecl(const VarDecl &D,
620  llvm::GlobalValue::LinkageTypes Linkage);
621 
622  llvm::GlobalVariable *getStaticLocalDeclGuardAddress(const VarDecl *D) {
623  return StaticLocalDeclGuardMap[D];
624  }
626  llvm::GlobalVariable *C) {
627  StaticLocalDeclGuardMap[D] = C;
628  }
629 
630  Address createUnnamedGlobalFrom(const VarDecl &D, llvm::Constant *Constant,
631  CharUnits Align);
632 
633  bool lookupRepresentativeDecl(StringRef MangledName,
634  GlobalDecl &Result) const;
635 
636  llvm::Constant *getAtomicSetterHelperFnMap(QualType Ty) {
637  return AtomicSetterHelperFnMap[Ty];
638  }
640  llvm::Constant *Fn) {
641  AtomicSetterHelperFnMap[Ty] = Fn;
642  }
643 
644  llvm::Constant *getAtomicGetterHelperFnMap(QualType Ty) {
645  return AtomicGetterHelperFnMap[Ty];
646  }
648  llvm::Constant *Fn) {
649  AtomicGetterHelperFnMap[Ty] = Fn;
650  }
651 
652  llvm::Constant *getTypeDescriptorFromMap(QualType Ty) {
653  return TypeDescriptorMap[Ty];
654  }
655  void setTypeDescriptorInMap(QualType Ty, llvm::Constant *C) {
656  TypeDescriptorMap[Ty] = C;
657  }
658 
659  CGDebugInfo *getModuleDebugInfo() { return DebugInfo.get(); }
660 
662  if (!NoObjCARCExceptionsMetadata)
663  NoObjCARCExceptionsMetadata = llvm::MDNode::get(getLLVMContext(), None);
664  return NoObjCARCExceptionsMetadata;
665  }
666 
667  ASTContext &getContext() const { return Context; }
668  const LangOptions &getLangOpts() const { return LangOpts; }
670  const { return HeaderSearchOpts; }
672  const { return PreprocessorOpts; }
673  const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
674  llvm::Module &getModule() const { return TheModule; }
675  DiagnosticsEngine &getDiags() const { return Diags; }
676  const llvm::DataLayout &getDataLayout() const {
677  return TheModule.getDataLayout();
678  }
679  const TargetInfo &getTarget() const { return Target; }
680  const llvm::Triple &getTriple() const { return Target.getTriple(); }
681  bool supportsCOMDAT() const;
682  void maybeSetTrivialComdat(const Decl &D, llvm::GlobalObject &GO);
683 
684  CGCXXABI &getCXXABI() const { return *ABI; }
685  llvm::LLVMContext &getLLVMContext() { return VMContext; }
686 
687  bool shouldUseTBAA() const { return TBAA != nullptr; }
688 
689  const TargetCodeGenInfo &getTargetCodeGenInfo();
690 
691  CodeGenTypes &getTypes() { return Types; }
692 
693  CodeGenVTables &getVTables() { return VTables; }
694 
696  return VTables.getItaniumVTableContext();
697  }
698 
700  return VTables.getMicrosoftVTableContext();
701  }
702 
703  CtorList &getGlobalCtors() { return GlobalCtors; }
704  CtorList &getGlobalDtors() { return GlobalDtors; }
705 
706  /// getTBAATypeInfo - Get metadata used to describe accesses to objects of
707  /// the given type.
708  llvm::MDNode *getTBAATypeInfo(QualType QTy);
709 
710  /// getTBAAAccessInfo - Get TBAA information that describes an access to
711  /// an object of the given type.
712  TBAAAccessInfo getTBAAAccessInfo(QualType AccessType);
713 
714  /// getTBAAVTablePtrAccessInfo - Get the TBAA information that describes an
715  /// access to a virtual table pointer.
716  TBAAAccessInfo getTBAAVTablePtrAccessInfo(llvm::Type *VTablePtrType);
717 
718  llvm::MDNode *getTBAAStructInfo(QualType QTy);
719 
720  /// getTBAABaseTypeInfo - Get metadata that describes the given base access
721  /// type. Return null if the type is not suitable for use in TBAA access tags.
722  llvm::MDNode *getTBAABaseTypeInfo(QualType QTy);
723 
724  /// getTBAAAccessTagInfo - Get TBAA tag for a given memory access.
725  llvm::MDNode *getTBAAAccessTagInfo(TBAAAccessInfo Info);
726 
727  /// mergeTBAAInfoForCast - Get merged TBAA information for the purposes of
728  /// type casts.
729  TBAAAccessInfo mergeTBAAInfoForCast(TBAAAccessInfo SourceInfo,
731 
732  /// mergeTBAAInfoForConditionalOperator - Get merged TBAA information for the
733  /// purposes of conditional operator.
734  TBAAAccessInfo mergeTBAAInfoForConditionalOperator(TBAAAccessInfo InfoA,
735  TBAAAccessInfo InfoB);
736 
737  /// mergeTBAAInfoForMemoryTransfer - Get merged TBAA information for the
738  /// purposes of memory transfer calls.
739  TBAAAccessInfo mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo,
740  TBAAAccessInfo SrcInfo);
741 
742  /// getTBAAInfoForSubobject - Get TBAA information for an access with a given
743  /// base lvalue.
745  if (Base.getTBAAInfo().isMayAlias())
746  return TBAAAccessInfo::getMayAliasInfo();
747  return getTBAAAccessInfo(AccessType);
748  }
749 
750  bool isTypeConstant(QualType QTy, bool ExcludeCtorDtor);
751 
752  bool isPaddedAtomicType(QualType type);
753  bool isPaddedAtomicType(const AtomicType *type);
754 
755  /// DecorateInstructionWithTBAA - Decorate the instruction with a TBAA tag.
756  void DecorateInstructionWithTBAA(llvm::Instruction *Inst,
757  TBAAAccessInfo TBAAInfo);
758 
759  /// Adds !invariant.barrier !tag to instruction
760  void DecorateInstructionWithInvariantGroup(llvm::Instruction *I,
761  const CXXRecordDecl *RD);
762 
763  /// Emit the given number of characters as a value of type size_t.
764  llvm::ConstantInt *getSize(CharUnits numChars);
765 
766  /// Set the visibility for the given LLVM GlobalValue.
767  void setGlobalVisibility(llvm::GlobalValue *GV, const NamedDecl *D) const;
768 
769  void setDSOLocal(llvm::GlobalValue *GV) const;
770 
771  void setDLLImportDLLExport(llvm::GlobalValue *GV, GlobalDecl D) const;
772  void setDLLImportDLLExport(llvm::GlobalValue *GV, const NamedDecl *D) const;
773  /// Set visibility, dllimport/dllexport and dso_local.
774  /// This must be called after dllimport/dllexport is set.
775  void setGVProperties(llvm::GlobalValue *GV, GlobalDecl GD) const;
776  void setGVProperties(llvm::GlobalValue *GV, const NamedDecl *D) const;
777 
778  void setGVPropertiesAux(llvm::GlobalValue *GV, const NamedDecl *D) const;
779 
780  /// Set the TLS mode for the given LLVM GlobalValue for the thread-local
781  /// variable declaration D.
782  void setTLSMode(llvm::GlobalValue *GV, const VarDecl &D) const;
783 
784  static llvm::GlobalValue::VisibilityTypes GetLLVMVisibility(Visibility V) {
785  switch (V) {
789  }
790  llvm_unreachable("unknown visibility!");
791  }
792 
793  llvm::Constant *GetAddrOfGlobal(GlobalDecl GD,
794  ForDefinition_t IsForDefinition
795  = NotForDefinition);
796 
797  /// Will return a global variable of the given type. If a variable with a
798  /// different type already exists then a new variable with the right type
799  /// will be created and all uses of the old variable will be replaced with a
800  /// bitcast to the new variable.
801  llvm::GlobalVariable *
802  CreateOrReplaceCXXRuntimeVariable(StringRef Name, llvm::Type *Ty,
803  llvm::GlobalValue::LinkageTypes Linkage,
804  unsigned Alignment);
805 
806  llvm::Function *
807  CreateGlobalInitOrDestructFunction(llvm::FunctionType *ty, const Twine &name,
808  const CGFunctionInfo &FI,
810  bool TLS = false);
811 
812  /// Return the AST address space of the underlying global variable for D, as
813  /// determined by its declaration. Normally this is the same as the address
814  /// space of D's type, but in CUDA, address spaces are associated with
815  /// declarations, not types. If D is nullptr, return the default address
816  /// space for global variable.
817  ///
818  /// For languages without explicit address spaces, if D has default address
819  /// space, target-specific global or constant address space may be returned.
820  LangAS GetGlobalVarAddressSpace(const VarDecl *D);
821 
822  /// Return the llvm::Constant for the address of the given global variable.
823  /// If Ty is non-null and if the global doesn't exist, then it will be created
824  /// with the specified type instead of whatever the normal requested type
825  /// would be. If IsForDefinition is true, it is guaranteed that an actual
826  /// global with type Ty will be returned, not conversion of a variable with
827  /// the same mangled name but some other type.
828  llvm::Constant *GetAddrOfGlobalVar(const VarDecl *D,
829  llvm::Type *Ty = nullptr,
830  ForDefinition_t IsForDefinition
831  = NotForDefinition);
832 
833  /// Return the AST address space of string literal, which is used to emit
834  /// the string literal as global variable in LLVM IR.
835  /// Note: This is not necessarily the address space of the string literal
836  /// in AST. For address space agnostic language, e.g. C++, string literal
837  /// in AST is always in default address space.
838  LangAS getStringLiteralAddressSpace() const;
839 
840  /// Return the address of the given function. If Ty is non-null, then this
841  /// function will use the specified type if it has to create it.
842  llvm::Constant *GetAddrOfFunction(GlobalDecl GD, llvm::Type *Ty = nullptr,
843  bool ForVTable = false,
844  bool DontDefer = false,
845  ForDefinition_t IsForDefinition
846  = NotForDefinition);
847 
848  /// Get the address of the RTTI descriptor for the given type.
849  llvm::Constant *GetAddrOfRTTIDescriptor(QualType Ty, bool ForEH = false);
850 
851  /// Get the address of a uuid descriptor .
852  ConstantAddress GetAddrOfUuidDescriptor(const CXXUuidofExpr* E);
853 
854  /// Get the address of the thunk for the given global decl.
855  llvm::Constant *GetAddrOfThunk(StringRef Name, llvm::Type *FnTy,
856  GlobalDecl GD);
857 
858  /// Get a reference to the target of VD.
859  ConstantAddress GetWeakRefReference(const ValueDecl *VD);
860 
861  /// Returns the assumed alignment of an opaque pointer to the given class.
862  CharUnits getClassPointerAlignment(const CXXRecordDecl *CD);
863 
864  /// Returns the assumed alignment of a virtual base of a class.
865  CharUnits getVBaseAlignment(CharUnits DerivedAlign,
866  const CXXRecordDecl *Derived,
867  const CXXRecordDecl *VBase);
868 
869  /// Given a class pointer with an actual known alignment, and the
870  /// expected alignment of an object at a dynamic offset w.r.t that
871  /// pointer, return the alignment to assume at the offset.
872  CharUnits getDynamicOffsetAlignment(CharUnits ActualAlign,
873  const CXXRecordDecl *Class,
874  CharUnits ExpectedTargetAlign);
875 
876  CharUnits
877  computeNonVirtualBaseClassOffset(const CXXRecordDecl *DerivedClass,
880 
881  /// Returns the offset from a derived class to a class. Returns null if the
882  /// offset is 0.
883  llvm::Constant *
884  GetNonVirtualBaseClassOffset(const CXXRecordDecl *ClassDecl,
887 
888  llvm::FoldingSet<BlockByrefHelpers> ByrefHelpersCache;
889 
890  /// Fetches the global unique block count.
891  int getUniqueBlockCount() { return ++Block.GlobalUniqueCount; }
892 
893  /// Fetches the type of a generic block descriptor.
894  llvm::Type *getBlockDescriptorType();
895 
896  /// The type of a generic block literal.
897  llvm::Type *getGenericBlockLiteralType();
898 
899  /// Gets the address of a block which requires no captures.
900  llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, StringRef Name);
901 
902  /// Returns the address of a block which requires no caputres, or null if
903  /// we've yet to emit the block for BE.
904  llvm::Constant *getAddrOfGlobalBlockIfEmitted(const BlockExpr *BE) {
905  return EmittedGlobalBlocks.lookup(BE);
906  }
907 
908  /// Notes that BE's global block is available via Addr. Asserts that BE
909  /// isn't already emitted.
910  void setAddrOfGlobalBlock(const BlockExpr *BE, llvm::Constant *Addr);
911 
912  /// Return a pointer to a constant CFString object for the given string.
913  ConstantAddress GetAddrOfConstantCFString(const StringLiteral *Literal);
914 
915  /// Return a pointer to a constant NSString object for the given string. Or a
916  /// user defined String object as defined via
917  /// -fconstant-string-class=class_name option.
918  ConstantAddress GetAddrOfConstantString(const StringLiteral *Literal);
919 
920  /// Return a constant array for the given string.
921  llvm::Constant *GetConstantArrayFromStringLiteral(const StringLiteral *E);
922 
923  /// Return a pointer to a constant array for the given string literal.
925  GetAddrOfConstantStringFromLiteral(const StringLiteral *S,
926  StringRef Name = ".str");
927 
928  /// Return a pointer to a constant array for the given ObjCEncodeExpr node.
930  GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *);
931 
932  /// Returns a pointer to a character array containing the literal and a
933  /// terminating '\0' character. The result has pointer to array type.
934  ///
935  /// \param GlobalName If provided, the name to use for the global (if one is
936  /// created).
938  GetAddrOfConstantCString(const std::string &Str,
939  const char *GlobalName = nullptr);
940 
941  /// Returns a pointer to a constant global variable for the given file-scope
942  /// compound literal expression.
943  ConstantAddress GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr*E);
944 
945  /// If it's been emitted already, returns the GlobalVariable corresponding to
946  /// a compound literal. Otherwise, returns null.
947  llvm::GlobalVariable *
948  getAddrOfConstantCompoundLiteralIfEmitted(const CompoundLiteralExpr *E);
949 
950  /// Notes that CLE's GlobalVariable is GV. Asserts that CLE isn't already
951  /// emitted.
952  void setAddrOfConstantCompoundLiteral(const CompoundLiteralExpr *CLE,
953  llvm::GlobalVariable *GV);
954 
955  /// Returns a pointer to a global variable representing a temporary
956  /// with static or thread storage duration.
957  ConstantAddress GetAddrOfGlobalTemporary(const MaterializeTemporaryExpr *E,
958  const Expr *Inner);
959 
960  /// Retrieve the record type that describes the state of an
961  /// Objective-C fast enumeration loop (for..in).
962  QualType getObjCFastEnumerationStateType();
963 
964  // Produce code for this constructor/destructor. This method doesn't try
965  // to apply any ABI rules about which other constructors/destructors
966  // are needed or if they are alias to each other.
967  llvm::Function *codegenCXXStructor(GlobalDecl GD);
968 
969  /// Return the address of the constructor/destructor of the given type.
970  llvm::Constant *
971  getAddrOfCXXStructor(GlobalDecl GD, const CGFunctionInfo *FnInfo = nullptr,
972  llvm::FunctionType *FnType = nullptr,
973  bool DontDefer = false,
974  ForDefinition_t IsForDefinition = NotForDefinition) {
975  return cast<llvm::Constant>(getAddrAndTypeOfCXXStructor(GD, FnInfo, FnType,
976  DontDefer,
977  IsForDefinition)
978  .getCallee());
979  }
980 
981  llvm::FunctionCallee getAddrAndTypeOfCXXStructor(
982  GlobalDecl GD, const CGFunctionInfo *FnInfo = nullptr,
983  llvm::FunctionType *FnType = nullptr, bool DontDefer = false,
984  ForDefinition_t IsForDefinition = NotForDefinition);
985 
986  /// Given a builtin id for a function like "__builtin_fabsf", return a
987  /// Function* for "fabsf".
988  llvm::Constant *getBuiltinLibFunction(const FunctionDecl *FD,
989  unsigned BuiltinID);
990 
991  llvm::Function *getIntrinsic(unsigned IID, ArrayRef<llvm::Type*> Tys = None);
992 
993  /// Emit code for a single top level declaration.
994  void EmitTopLevelDecl(Decl *D);
995 
996  /// Stored a deferred empty coverage mapping for an unused
997  /// and thus uninstrumented top level declaration.
998  void AddDeferredUnusedCoverageMapping(Decl *D);
999 
1000  /// Remove the deferred empty coverage mapping as this
1001  /// declaration is actually instrumented.
1002  void ClearUnusedCoverageMapping(const Decl *D);
1003 
1004  /// Emit all the deferred coverage mappings
1005  /// for the uninstrumented functions.
1006  void EmitDeferredUnusedCoverageMappings();
1007 
1008  /// Tell the consumer that this variable has been instantiated.
1009  void HandleCXXStaticMemberVarInstantiation(VarDecl *VD);
1010 
1011  /// If the declaration has internal linkage but is inside an
1012  /// extern "C" linkage specification, prepare to emit an alias for it
1013  /// to the expected name.
1014  template<typename SomeDecl>
1015  void MaybeHandleStaticInExternC(const SomeDecl *D, llvm::GlobalValue *GV);
1016 
1017  /// Add a global to a list to be added to the llvm.used metadata.
1018  void addUsedGlobal(llvm::GlobalValue *GV);
1019 
1020  /// Add a global to a list to be added to the llvm.compiler.used metadata.
1021  void addCompilerUsedGlobal(llvm::GlobalValue *GV);
1022 
1023  /// Add a destructor and object to add to the C++ global destructor function.
1024  void AddCXXDtorEntry(llvm::FunctionCallee DtorFn, llvm::Constant *Object) {
1025  CXXGlobalDtors.emplace_back(DtorFn.getFunctionType(), DtorFn.getCallee(),
1026  Object);
1027  }
1028 
1029  /// Create or return a runtime function declaration with the specified type
1030  /// and name.
1031  llvm::FunctionCallee
1032  CreateRuntimeFunction(llvm::FunctionType *Ty, StringRef Name,
1033  llvm::AttributeList ExtraAttrs = llvm::AttributeList(),
1034  bool Local = false);
1035 
1036  /// Create a new runtime global variable with the specified type and name.
1037  llvm::Constant *CreateRuntimeVariable(llvm::Type *Ty,
1038  StringRef Name);
1039 
1040  ///@name Custom Blocks Runtime Interfaces
1041  ///@{
1042 
1043  llvm::Constant *getNSConcreteGlobalBlock();
1044  llvm::Constant *getNSConcreteStackBlock();
1045  llvm::FunctionCallee getBlockObjectAssign();
1046  llvm::FunctionCallee getBlockObjectDispose();
1047 
1048  ///@}
1049 
1050  llvm::Function *getLLVMLifetimeStartFn();
1051  llvm::Function *getLLVMLifetimeEndFn();
1052 
1053  // Make sure that this type is translated.
1054  void UpdateCompletedType(const TagDecl *TD);
1055 
1056  llvm::Constant *getMemberPointerConstant(const UnaryOperator *e);
1057 
1058  /// Emit type info if type of an expression is a variably modified
1059  /// type. Also emit proper debug info for cast types.
1060  void EmitExplicitCastExprType(const ExplicitCastExpr *E,
1061  CodeGenFunction *CGF = nullptr);
1062 
1063  /// Return the result of value-initializing the given type, i.e. a null
1064  /// expression of the given type. This is usually, but not always, an LLVM
1065  /// null constant.
1066  llvm::Constant *EmitNullConstant(QualType T);
1067 
1068  /// Return a null constant appropriate for zero-initializing a base class with
1069  /// the given type. This is usually, but not always, an LLVM null constant.
1070  llvm::Constant *EmitNullConstantForBase(const CXXRecordDecl *Record);
1071 
1072  /// Emit a general error that something can't be done.
1073  void Error(SourceLocation loc, StringRef error);
1074 
1075  /// Print out an error that codegen doesn't support the specified stmt yet.
1076  void ErrorUnsupported(const Stmt *S, const char *Type);
1077 
1078  /// Print out an error that codegen doesn't support the specified decl yet.
1079  void ErrorUnsupported(const Decl *D, const char *Type);
1080 
1081  /// Set the attributes on the LLVM function for the given decl and function
1082  /// info. This applies attributes necessary for handling the ABI as well as
1083  /// user specified attributes like section.
1084  void SetInternalFunctionAttributes(GlobalDecl GD, llvm::Function *F,
1085  const CGFunctionInfo &FI);
1086 
1087  /// Set the LLVM function attributes (sext, zext, etc).
1088  void SetLLVMFunctionAttributes(GlobalDecl GD, const CGFunctionInfo &Info,
1089  llvm::Function *F);
1090 
1091  /// Set the LLVM function attributes which only apply to a function
1092  /// definition.
1093  void SetLLVMFunctionAttributesForDefinition(const Decl *D, llvm::Function *F);
1094 
1095  /// Return true iff the given type uses 'sret' when used as a return type.
1096  bool ReturnTypeUsesSRet(const CGFunctionInfo &FI);
1097 
1098  /// Return true iff the given type uses an argument slot when 'sret' is used
1099  /// as a return type.
1100  bool ReturnSlotInterferesWithArgs(const CGFunctionInfo &FI);
1101 
1102  /// Return true iff the given type uses 'fpret' when used as a return type.
1103  bool ReturnTypeUsesFPRet(QualType ResultType);
1104 
1105  /// Return true iff the given type uses 'fp2ret' when used as a return type.
1106  bool ReturnTypeUsesFP2Ret(QualType ResultType);
1107 
1108  /// Get the LLVM attributes and calling convention to use for a particular
1109  /// function type.
1110  ///
1111  /// \param Name - The function name.
1112  /// \param Info - The function type information.
1113  /// \param CalleeInfo - The callee information these attributes are being
1114  /// constructed for. If valid, the attributes applied to this decl may
1115  /// contribute to the function attributes and calling convention.
1116  /// \param Attrs [out] - On return, the attribute list to use.
1117  /// \param CallingConv [out] - On return, the LLVM calling convention to use.
1118  void ConstructAttributeList(StringRef Name, const CGFunctionInfo &Info,
1119  CGCalleeInfo CalleeInfo,
1120  llvm::AttributeList &Attrs, unsigned &CallingConv,
1121  bool AttrOnCallSite);
1122 
1123  /// Adds attributes to F according to our CodeGenOptions and LangOptions, as
1124  /// though we had emitted it ourselves. We remove any attributes on F that
1125  /// conflict with the attributes we add here.
1126  ///
1127  /// This is useful for adding attrs to bitcode modules that you want to link
1128  /// with but don't control, such as CUDA's libdevice. When linking with such
1129  /// a bitcode library, you might want to set e.g. its functions'
1130  /// "unsafe-fp-math" attribute to match the attr of the functions you're
1131  /// codegen'ing. Otherwise, LLVM will interpret the bitcode module's lack of
1132  /// unsafe-fp-math attrs as tantamount to unsafe-fp-math=false, and then LLVM
1133  /// will propagate unsafe-fp-math=false up to every transitive caller of a
1134  /// function in the bitcode library!
1135  ///
1136  /// With the exception of fast-math attrs, this will only make the attributes
1137  /// on the function more conservative. But it's unsafe to call this on a
1138  /// function which relies on particular fast-math attributes for correctness.
1139  /// It's up to you to ensure that this is safe.
1140  void AddDefaultFnAttrs(llvm::Function &F);
1141 
1142  /// Parses the target attributes passed in, and returns only the ones that are
1143  /// valid feature names.
1144  TargetAttr::ParsedTargetAttr filterFunctionTargetAttrs(const TargetAttr *TD);
1145 
1146  // Fills in the supplied string map with the set of target features for the
1147  // passed in function.
1148  void getFunctionFeatureMap(llvm::StringMap<bool> &FeatureMap, GlobalDecl GD);
1149 
1150  StringRef getMangledName(GlobalDecl GD);
1151  StringRef getBlockMangledName(GlobalDecl GD, const BlockDecl *BD);
1152 
1153  void EmitTentativeDefinition(const VarDecl *D);
1154 
1155  void EmitVTable(CXXRecordDecl *Class);
1156 
1157  void RefreshTypeCacheForClass(const CXXRecordDecl *Class);
1158 
1159  /// Appends Opts to the "llvm.linker.options" metadata value.
1160  void AppendLinkerOptions(StringRef Opts);
1161 
1162  /// Appends a detect mismatch command to the linker options.
1163  void AddDetectMismatch(StringRef Name, StringRef Value);
1164 
1165  /// Appends a dependent lib to the appropriate metadata value.
1166  void AddDependentLib(StringRef Lib);
1167 
1168 
1169  llvm::GlobalVariable::LinkageTypes getFunctionLinkage(GlobalDecl GD);
1170 
1171  void setFunctionLinkage(GlobalDecl GD, llvm::Function *F) {
1172  F->setLinkage(getFunctionLinkage(GD));
1173  }
1174 
1175  /// Return the appropriate linkage for the vtable, VTT, and type information
1176  /// of the given class.
1177  llvm::GlobalVariable::LinkageTypes getVTableLinkage(const CXXRecordDecl *RD);
1178 
1179  /// Return the store size, in character units, of the given LLVM type.
1180  CharUnits GetTargetTypeStoreSize(llvm::Type *Ty) const;
1181 
1182  /// Returns LLVM linkage for a declarator.
1183  llvm::GlobalValue::LinkageTypes
1184  getLLVMLinkageForDeclarator(const DeclaratorDecl *D, GVALinkage Linkage,
1185  bool IsConstantVariable);
1186 
1187  /// Returns LLVM linkage for a declarator.
1188  llvm::GlobalValue::LinkageTypes
1189  getLLVMLinkageVarDefinition(const VarDecl *VD, bool IsConstant);
1190 
1191  /// Emit all the global annotations.
1192  void EmitGlobalAnnotations();
1193 
1194  /// Emit an annotation string.
1195  llvm::Constant *EmitAnnotationString(StringRef Str);
1196 
1197  /// Emit the annotation's translation unit.
1198  llvm::Constant *EmitAnnotationUnit(SourceLocation Loc);
1199 
1200  /// Emit the annotation line number.
1201  llvm::Constant *EmitAnnotationLineNo(SourceLocation L);
1202 
1203  /// Generate the llvm::ConstantStruct which contains the annotation
1204  /// information for a given GlobalValue. The annotation struct is
1205  /// {i8 *, i8 *, i8 *, i32}. The first field is a constant expression, the
1206  /// GlobalValue being annotated. The second field is the constant string
1207  /// created from the AnnotateAttr's annotation. The third field is a constant
1208  /// string containing the name of the translation unit. The fourth field is
1209  /// the line number in the file of the annotated value declaration.
1210  llvm::Constant *EmitAnnotateAttr(llvm::GlobalValue *GV,
1211  const AnnotateAttr *AA,
1212  SourceLocation L);
1213 
1214  /// Add global annotations that are set on D, for the global GV. Those
1215  /// annotations are emitted during finalization of the LLVM code.
1216  void AddGlobalAnnotations(const ValueDecl *D, llvm::GlobalValue *GV);
1217 
1218  bool isInSanitizerBlacklist(SanitizerMask Kind, llvm::Function *Fn,
1219  SourceLocation Loc) const;
1220 
1221  bool isInSanitizerBlacklist(llvm::GlobalVariable *GV, SourceLocation Loc,
1222  QualType Ty,
1223  StringRef Category = StringRef()) const;
1224 
1225  /// Imbue XRay attributes to a function, applying the always/never attribute
1226  /// lists in the process. Returns true if we did imbue attributes this way,
1227  /// false otherwise.
1228  bool imbueXRayAttrs(llvm::Function *Fn, SourceLocation Loc,
1229  StringRef Category = StringRef()) const;
1230 
1232  return SanitizerMD.get();
1233  }
1234 
1236  DeferredVTables.push_back(RD);
1237  }
1238 
1239  /// Emit code for a single global function or var decl. Forward declarations
1240  /// are emitted lazily.
1241  void EmitGlobal(GlobalDecl D);
1242 
1243  bool TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D);
1244 
1245  llvm::GlobalValue *GetGlobalValue(StringRef Ref);
1246 
1247  /// Set attributes which are common to any form of a global definition (alias,
1248  /// Objective-C method, function, global variable).
1249  ///
1250  /// NOTE: This should only be called for definitions.
1251  void SetCommonAttributes(GlobalDecl GD, llvm::GlobalValue *GV);
1252 
1253  void addReplacement(StringRef Name, llvm::Constant *C);
1254 
1255  void addGlobalValReplacement(llvm::GlobalValue *GV, llvm::Constant *C);
1256 
1257  /// Emit a code for threadprivate directive.
1258  /// \param D Threadprivate declaration.
1259  void EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D);
1260 
1261  /// Emit a code for declare reduction construct.
1262  void EmitOMPDeclareReduction(const OMPDeclareReductionDecl *D,
1263  CodeGenFunction *CGF = nullptr);
1264 
1265  /// Emit a code for declare mapper construct.
1266  void EmitOMPDeclareMapper(const OMPDeclareMapperDecl *D,
1267  CodeGenFunction *CGF = nullptr);
1268 
1269  /// Emit a code for requires directive.
1270  /// \param D Requires declaration
1271  void EmitOMPRequiresDecl(const OMPRequiresDecl *D);
1272 
1273  /// Returns whether the given record has hidden LTO visibility and therefore
1274  /// may participate in (single-module) CFI and whole-program vtable
1275  /// optimization.
1276  bool HasHiddenLTOVisibility(const CXXRecordDecl *RD);
1277 
1278  /// Emit type metadata for the given vtable using the given layout.
1279  void EmitVTableTypeMetadata(llvm::GlobalVariable *VTable,
1280  const VTableLayout &VTLayout);
1281 
1282  /// Generate a cross-DSO type identifier for MD.
1283  llvm::ConstantInt *CreateCrossDsoCfiTypeId(llvm::Metadata *MD);
1284 
1285  /// Create a metadata identifier for the given type. This may either be an
1286  /// MDString (for external identifiers) or a distinct unnamed MDNode (for
1287  /// internal identifiers).
1288  llvm::Metadata *CreateMetadataIdentifierForType(QualType T);
1289 
1290  /// Create a metadata identifier that is intended to be used to check virtual
1291  /// calls via a member function pointer.
1292  llvm::Metadata *CreateMetadataIdentifierForVirtualMemPtrType(QualType T);
1293 
1294  /// Create a metadata identifier for the generalization of the given type.
1295  /// This may either be an MDString (for external identifiers) or a distinct
1296  /// unnamed MDNode (for internal identifiers).
1297  llvm::Metadata *CreateMetadataIdentifierGeneralized(QualType T);
1298 
1299  /// Create and attach type metadata to the given function.
1300  void CreateFunctionTypeMetadataForIcall(const FunctionDecl *FD,
1301  llvm::Function *F);
1302 
1303  /// Returns whether this module needs the "all-vtables" type identifier.
1304  bool NeedAllVtablesTypeId() const;
1305 
1306  /// Create and attach type metadata for the given vtable.
1307  void AddVTableTypeMetadata(llvm::GlobalVariable *VTable, CharUnits Offset,
1308  const CXXRecordDecl *RD);
1309 
1310  /// Return a vector of most-base classes for RD. This is used to implement
1311  /// control flow integrity checks for member function pointers.
1312  ///
1313  /// A most-base class of a class C is defined as a recursive base class of C,
1314  /// including C itself, that does not have any bases.
1315  std::vector<const CXXRecordDecl *>
1316  getMostBaseClasses(const CXXRecordDecl *RD);
1317 
1318  /// Get the declaration of std::terminate for the platform.
1319  llvm::FunctionCallee getTerminateFn();
1320 
1321  llvm::SanitizerStatReport &getSanStats();
1322 
1323  llvm::Value *
1324  createOpenCLIntToSamplerConversion(const Expr *E, CodeGenFunction &CGF);
1325 
1326  /// OpenCL v1.2 s5.6.4.6 allows the compiler to store kernel argument
1327  /// information in the program executable. The argument information stored
1328  /// includes the argument name, its type, the address and access qualifiers
1329  /// used. This helper can be used to generate metadata for source code kernel
1330  /// function as well as generated implicitly kernels. If a kernel is generated
1331  /// implicitly null value has to be passed to the last two parameters,
1332  /// otherwise all parameters must have valid non-null values.
1333  /// \param FN is a pointer to IR function being generated.
1334  /// \param FD is a pointer to function declaration if any.
1335  /// \param CGF is a pointer to CodeGenFunction that generates this function.
1336  void GenOpenCLArgMetadata(llvm::Function *FN,
1337  const FunctionDecl *FD = nullptr,
1338  CodeGenFunction *CGF = nullptr);
1339 
1340  /// Get target specific null pointer.
1341  /// \param T is the LLVM type of the null pointer.
1342  /// \param QT is the clang QualType of the null pointer.
1343  llvm::Constant *getNullPointer(llvm::PointerType *T, QualType QT);
1344 
1345 private:
1346  llvm::Constant *GetOrCreateLLVMFunction(
1347  StringRef MangledName, llvm::Type *Ty, GlobalDecl D, bool ForVTable,
1348  bool DontDefer = false, bool IsThunk = false,
1349  llvm::AttributeList ExtraAttrs = llvm::AttributeList(),
1350  ForDefinition_t IsForDefinition = NotForDefinition);
1351 
1352  llvm::Constant *GetOrCreateMultiVersionResolver(GlobalDecl GD,
1353  llvm::Type *DeclTy,
1354  const FunctionDecl *FD);
1355  void UpdateMultiVersionNames(GlobalDecl GD, const FunctionDecl *FD);
1356 
1357  llvm::Constant *GetOrCreateLLVMGlobal(StringRef MangledName,
1358  llvm::PointerType *PTy,
1359  const VarDecl *D,
1360  ForDefinition_t IsForDefinition
1361  = NotForDefinition);
1362 
1363  bool GetCPUAndFeaturesAttributes(GlobalDecl GD,
1364  llvm::AttrBuilder &AttrBuilder);
1365  void setNonAliasAttributes(GlobalDecl GD, llvm::GlobalObject *GO);
1366 
1367  /// Set function attributes for a function declaration.
1368  void SetFunctionAttributes(GlobalDecl GD, llvm::Function *F,
1369  bool IsIncompleteFunction, bool IsThunk);
1370 
1371  void EmitGlobalDefinition(GlobalDecl D, llvm::GlobalValue *GV = nullptr);
1372 
1373  void EmitGlobalFunctionDefinition(GlobalDecl GD, llvm::GlobalValue *GV);
1374  void EmitMultiVersionFunctionDefinition(GlobalDecl GD, llvm::GlobalValue *GV);
1375 
1376  void EmitGlobalVarDefinition(const VarDecl *D, bool IsTentative = false);
1377  void EmitAliasDefinition(GlobalDecl GD);
1378  void emitIFuncDefinition(GlobalDecl GD);
1379  void emitCPUDispatchDefinition(GlobalDecl GD);
1380  void EmitObjCPropertyImplementations(const ObjCImplementationDecl *D);
1381  void EmitObjCIvarInitializations(ObjCImplementationDecl *D);
1382 
1383  // C++ related functions.
1384 
1385  void EmitDeclContext(const DeclContext *DC);
1386  void EmitLinkageSpec(const LinkageSpecDecl *D);
1387 
1388  /// Emit the function that initializes C++ thread_local variables.
1389  void EmitCXXThreadLocalInitFunc();
1390 
1391  /// Emit the function that initializes C++ globals.
1392  void EmitCXXGlobalInitFunc();
1393 
1394  /// Emit the function that destroys C++ globals.
1395  void EmitCXXGlobalDtorFunc();
1396 
1397  /// Emit the function that initializes the specified global (if PerformInit is
1398  /// true) and registers its destructor.
1399  void EmitCXXGlobalVarDeclInitFunc(const VarDecl *D,
1400  llvm::GlobalVariable *Addr,
1401  bool PerformInit);
1402 
1403  void EmitPointerToInitFunc(const VarDecl *VD, llvm::GlobalVariable *Addr,
1404  llvm::Function *InitFunc, InitSegAttr *ISA);
1405 
1406  // FIXME: Hardcoding priority here is gross.
1407  void AddGlobalCtor(llvm::Function *Ctor, int Priority = 65535,
1408  llvm::Constant *AssociatedData = nullptr);
1409  void AddGlobalDtor(llvm::Function *Dtor, int Priority = 65535);
1410 
1411  /// EmitCtorList - Generates a global array of functions and priorities using
1412  /// the given list and name. This array will have appending linkage and is
1413  /// suitable for use as a LLVM constructor or destructor array. Clears Fns.
1414  void EmitCtorList(CtorList &Fns, const char *GlobalName);
1415 
1416  /// Emit any needed decls for which code generation was deferred.
1417  void EmitDeferred();
1418 
1419  /// Try to emit external vtables as available_externally if they have emitted
1420  /// all inlined virtual functions. It runs after EmitDeferred() and therefore
1421  /// is not allowed to create new references to things that need to be emitted
1422  /// lazily.
1423  void EmitVTablesOpportunistically();
1424 
1425  /// Call replaceAllUsesWith on all pairs in Replacements.
1426  void applyReplacements();
1427 
1428  /// Call replaceAllUsesWith on all pairs in GlobalValReplacements.
1429  void applyGlobalValReplacements();
1430 
1431  void checkAliases();
1432 
1433  std::map<int, llvm::TinyPtrVector<llvm::Function *>> DtorsUsingAtExit;
1434 
1435  /// Register functions annotated with __attribute__((destructor)) using
1436  /// __cxa_atexit, if it is available, or atexit otherwise.
1437  void registerGlobalDtorsWithAtExit();
1438 
1439  void emitMultiVersionFunctions();
1440 
1441  /// Emit any vtables which we deferred and still have a use for.
1442  void EmitDeferredVTables();
1443 
1444  /// Emit a dummy function that reference a CoreFoundation symbol when
1445  /// @available is used on Darwin.
1446  void emitAtAvailableLinkGuard();
1447 
1448  /// Emit the llvm.used and llvm.compiler.used metadata.
1449  void emitLLVMUsed();
1450 
1451  /// Emit the link options introduced by imported modules.
1452  void EmitModuleLinkOptions();
1453 
1454  /// Emit aliases for internal-linkage declarations inside "C" language
1455  /// linkage specifications, giving them the "expected" name where possible.
1456  void EmitStaticExternCAliases();
1457 
1458  void EmitDeclMetadata();
1459 
1460  /// Emit the Clang version as llvm.ident metadata.
1461  void EmitVersionIdentMetadata();
1462 
1463  /// Emit the Clang commandline as llvm.commandline metadata.
1464  void EmitCommandLineMetadata();
1465 
1466  /// Emits target specific Metadata for global declarations.
1467  void EmitTargetMetadata();
1468 
1469  /// Emits OpenCL specific Metadata e.g. OpenCL version.
1470  void EmitOpenCLMetadata();
1471 
1472  /// Emit the llvm.gcov metadata used to tell LLVM where to emit the .gcno and
1473  /// .gcda files in a way that persists in .bc files.
1474  void EmitCoverageFile();
1475 
1476  /// Emits the initializer for a uuidof string.
1477  llvm::Constant *EmitUuidofInitializer(StringRef uuidstr);
1478 
1479  /// Determine whether the definition must be emitted; if this returns \c
1480  /// false, the definition can be emitted lazily if it's used.
1481  bool MustBeEmitted(const ValueDecl *D);
1482 
1483  /// Determine whether the definition can be emitted eagerly, or should be
1484  /// delayed until the end of the translation unit. This is relevant for
1485  /// definitions whose linkage can change, e.g. implicit function instantions
1486  /// which may later be explicitly instantiated.
1487  bool MayBeEmittedEagerly(const ValueDecl *D);
1488 
1489  /// Check whether we can use a "simpler", more core exceptions personality
1490  /// function.
1491  void SimplifyPersonality();
1492 
1493  /// Helper function for ConstructAttributeList and AddDefaultFnAttrs.
1494  /// Constructs an AttrList for a function with the given properties.
1495  void ConstructDefaultFnAttrList(StringRef Name, bool HasOptnone,
1496  bool AttrOnCallSite,
1497  llvm::AttrBuilder &FuncAttrs);
1498 
1499  llvm::Metadata *CreateMetadataIdentifierImpl(QualType T, MetadataTypeMap &Map,
1500  StringRef Suffix);
1501 };
1502 
1503 } // end namespace CodeGen
1504 } // end namespace clang
1505 
1506 #endif // LLVM_CLANG_LIB_CODEGEN_CODEGENMODULE_H
const llvm::DataLayout & getDataLayout() const
TBAAAccessInfo getTBAAInfoForSubobject(LValue Base, QualType AccessType)
getTBAAInfoForSubobject - Get TBAA information for an access with a given base lvalue.
CGOpenCLRuntime & getOpenCLRuntime()
Return a reference to the configured OpenCL runtime.
llvm::Function * objc_retainAutoreleaseReturnValue
id objc_retainAutoreleaseReturnValue(id);
llvm::FunctionCallee objc_releaseRuntimeFunction
void objc_release(id); Note this is the runtime method not the intrinsic.
Represents a function declaration or definition.
Definition: Decl.h:1748
bool operator==(const OrderGlobalInits &RHS) const
llvm::Function * objc_copyWeak
void objc_copyWeak(id *dest, id *src);
void setTypeDescriptorInMap(QualType Ty, llvm::Constant *C)
A (possibly-)qualified type.
Definition: Type.h:643
const CodeGenOptions & getCodeGenOpts() const
bool hasObjCRuntime()
Return true iff an Objective-C runtime has been configured.
llvm::LLVMContext & getLLVMContext()
Specialize PointerLikeTypeTraits to allow LazyGenerationalUpdatePtr to be placed into a PointerUnion...
Definition: Dominators.h:30
Stmt - This represents one statement.
Definition: Stmt.h:66
const llvm::Triple & getTriple() const
Returns the target triple of the primary target.
Definition: TargetInfo.h:985
Implements runtime-specific code generation functions.
Definition: CGObjCRuntime.h:63
Defines the clang::Module class, which describes a module in the source code.
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:88
llvm::Constant * getAddrOfCXXStructor(GlobalDecl GD, const CGFunctionInfo *FnInfo=nullptr, llvm::FunctionType *FnType=nullptr, bool DontDefer=false, ForDefinition_t IsForDefinition=NotForDefinition)
Return the address of the constructor/destructor of the given type.
BlockByrefHelpers(CharUnits alignment)
The base class of the type hierarchy.
Definition: Type.h:1433
void setFunctionLinkage(GlobalDecl GD, llvm::Function *F)
Stores additional source code information like skipped ranges which is required by the coverage mappi...
virtual void clear()
The l-value was an access to a declared entity or something equivalently strong, like the address of ...
constexpr XRayInstrMask Function
Definition: XRayInstr.h:38
RangeSelector name(std::string ID)
Given a node with a "name", (like NamedDecl, DeclRefExpr or CxxCtorInitializer) selects the name&#39;s to...
PreprocessorOptions - This class is used for passing the various options used in preprocessor initial...
Represents a prvalue temporary that is written into memory so that a reference can bind to it...
Definition: ExprCXX.h:4320
static llvm::GlobalValue::VisibilityTypes GetLLVMVisibility(Visibility V)
__m128i_u * p
Definition: emmintrin.h:2134
const CXXBaseSpecifier *const * path_const_iterator
Definition: Expr.h:3190
Represents a variable declaration or definition.
Definition: Decl.h:812
Objects with "hidden" visibility are not seen by the dynamic linker.
Definition: Visibility.h:36
CompoundLiteralExpr - [C99 6.5.2.5].
Definition: Expr.h:3048
CGDebugInfo * getModuleDebugInfo()
LangAS
Defines the address space values used by the address space qualifier of QualType. ...
Definition: AddressSpaces.h:25
This class gathers all debug information during compilation and is responsible for emitting to llvm g...
Definition: CGDebugInfo.h:54
DiagnosticsEngine & getDiags() const
llvm::Constant * getAtomicSetterHelperFnMap(QualType Ty)
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have...
Definition: Linkage.h:23
llvm::Function * objc_retainAutorelease
id objc_retainAutorelease(id);
llvm::GlobalVariable * getStaticLocalDeclGuardAddress(const VarDecl *D)
llvm::Constant * getAtomicGetterHelperFnMap(QualType Ty)
One of these records is kept for each identifier that is lexed.
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:154
llvm::Function * objc_initWeak
id objc_initWeak(id*, id);
void AddCXXDtorEntry(llvm::FunctionCallee DtorFn, llvm::Constant *Object)
Add a destructor and object to add to the C++ global destructor function.
llvm::FunctionCallee objc_autoreleaseRuntimeFunction
id objc_autorelease(id); Note this is the runtime method not the intrinsic.
int Category
Definition: Format.cpp:1714
llvm::IndexedInstrProfReader * getPGOReader() const
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:49
Objects with "default" visibility are seen by the dynamic linker and act like normal objects...
Definition: Visibility.h:45
llvm::FunctionCallee objc_alloc_init
void objc_alloc_init(id);
llvm::Function * objc_release
void objc_release(id);
CGCUDARuntime & getCUDARuntime()
Return a reference to the configured CUDA runtime.
bool operator<(const OrderGlobalInits &RHS) const
CharUnits - This is an opaque type for sizes expressed in character units.
Definition: CharUnits.h:37
Structor(int Priority, llvm::Constant *Initializer, llvm::Constant *AssociatedData)
Visibility
Describes the different kinds of visibility that a declaration may have.
Definition: Visibility.h:33
void setStaticLocalDeclAddress(const VarDecl *D, llvm::Constant *C)
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:149
llvm::Constant * getAddrOfGlobalBlockIfEmitted(const BlockExpr *BE)
Returns the address of a block which requires no caputres, or null if we&#39;ve yet to emit the block for...
void addDeferredVTable(const CXXRecordDecl *RD)
void setAtomicGetterHelperFnMap(QualType Ty, llvm::Constant *Fn)
void addMissing(bool MainFile)
Record that a function we&#39;ve visited has no profile data.
Enums/classes describing ABI related information about constructors, destructors and thunks...
ItaniumVTableContext & getItaniumVTableContext()
Definition: CGVTables.h:78
__DEVICE__ void * memset(void *__a, int __b, size_t __c)
const PreprocessorOptions & getPreprocessorOpts() const
void Profile(llvm::FoldingSetNodeID &id) const
llvm::Function * objc_moveWeak
void objc_moveWeak(id *dest, id *src);
Represents a linkage specification.
Definition: DeclCXX.h:2954
InstrProfStats & getPGOStats()
llvm::Constant * getStaticLocalDeclAddress(const VarDecl *D)
llvm::Function * objc_unsafeClaimAutoreleasedReturnValue
id objc_unsafeClaimAutoreleasedReturnValue(id);
llvm::Function * objc_retainAutoreleasedReturnValue
id objc_retainAutoreleasedReturnValue(id);
Represents a ValueDecl that came out of a declarator.
Definition: Decl.h:688
QuantityType getQuantity() const
getQuantity - Get the raw integer representation of this quantity.
Definition: CharUnits.h:178
This represents &#39;#pragma omp requires...&#39; directive.
Definition: DeclOpenMP.h:345
unsigned Offset
Definition: Format.cpp:1713
Exposes information about the current target.
Definition: TargetInfo.h:161
CGObjCRuntime & getObjCRuntime()
Return a reference to the configured Objective-C runtime.
CharUnits Alignment
The alignment of the field.
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:3915
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Definition: Decl.h:636
This represents one expression.
Definition: Expr.h:108
Defines the clang::LangOptions interface.
SourceLocation End
Organizes the cross-function state that is used while generating code coverage mapping data...
#define V(N, I)
Definition: ASTContext.h:2907
BlockExpr - Adaptor class for mixing a BlockDecl with expressions.
Definition: Expr.h:5541
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2830
llvm::FunctionCallee objc_alloc
void objc_alloc(id);
void setStaticLocalDeclGuardAddress(const VarDecl *D, llvm::GlobalVariable *C)
MicrosoftVTableContext & getMicrosoftVTableContext()
Objects with "protected" visibility are seen by the dynamic linker but always dynamically resolve to ...
Definition: Visibility.h:41
void addMismatched(bool MainFile)
Record that a function we&#39;ve visited has mismatched profile data.
TBAAAccessInfo getTBAAInfo() const
Definition: CGValue.h:307
UnaryOperator - This represents the unary-expression&#39;s (except sizeof and alignof), the postinc/postdec operators from postfix-expression, and various extensions.
Definition: Expr.h:2016
const TargetInfo & getTarget() const
const LangOptions & getLangOpts() const
ASTContext & getContext() const
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:264
GlobalDecl - represents a global declaration.
Definition: GlobalDecl.h:40
virtual bool needsCopy() const
void addVisited(bool MainFile)
Record that we&#39;ve visited a function and whether or not that function was in the main source file...
llvm::Function * objc_loadWeakRetained
id objc_loadWeakRetained(id*);
Kind
llvm::FunctionCallee objc_autoreleasePoolPop
void objc_autoreleasePoolPop(void*);
Encodes a location in the source.
llvm::Function * clang_arc_use
void clang.arc.use(...);
llvm::Constant * getTypeDescriptorFromMap(QualType Ty)
This represents &#39;#pragma omp declare reduction ...&#39; directive.
Definition: DeclOpenMP.h:102
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3097
llvm::Function * objc_destroyWeak
void objc_destroyWeak(id*);
ObjCEntrypoints & getObjCEntrypoints() const
This file defines OpenMP nodes for declarative directives.
llvm::Function * objc_storeWeak
id objc_storeWeak(id*, id);
llvm::FunctionCallee objc_retainRuntimeFunction
id objc_retain(id); Note this is the runtime method not the intrinsic.
llvm::InlineAsm * retainAutoreleasedReturnValueMarker
A void(void) inline asm to use to mark that the return value of a call will be immediately retain...
const HeaderSearchOptions & getHeaderSearchOpts() const
An aligned address.
Definition: Address.h:24
virtual bool needsDispose() const
ItaniumVTableContext & getItaniumVTableContext()
TargetCodeGenInfo - This class organizes various target-specific codegeneration issues, like target-specific attributes, builtins and so on.
Definition: TargetInfo.h:45
std::vector< Structor > CtorList
CGFunctionInfo - Class to encapsulate the information about a function definition.
This class organizes the cross-function state that is used while generating LLVM code.
CGOpenMPRuntime & getOpenMPRuntime()
Return a reference to the configured OpenMP runtime.
Dataflow Directional Tag Classes.
llvm::FoldingSet< BlockByrefHelpers > ByrefHelpersCache
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1271
int getUniqueBlockCount()
Fetches the global unique block count.
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:27
static llvm::Constant * EmitNullConstantForBase(CodeGenModule &CGM, llvm::Type *baseType, const CXXRecordDecl *base)
Emit the null constant for a base subobject.
CoverageMappingModuleGen * getCoverageMapping() const
llvm::Module & getModule() const
ExplicitCastExpr - An explicit cast written in the source code.
Definition: Expr.h:3308
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2551
llvm::FunctionCallee objc_autoreleasePoolPopInvoke
void objc_autoreleasePoolPop(void*); Note this method is used when we are using exception handling ...
Implements C++ ABI-specific code generation functions.
Definition: CGCXXABI.h:43
ObjCEncodeExpr, used for @encode in Objective-C.
Definition: ExprObjC.h:407
This class organizes the cross-module state that is used while lowering AST types to LLVM types...
Definition: CodeGenTypes.h:59
bool hasDiagnostics()
Whether or not the stats we&#39;ve gathered indicate any potential problems.
This class records statistics on instrumentation based profiling.
CodeGenOptions - Track various options which control how the code is optimized and passed to the back...
llvm::Function * objc_autoreleaseReturnValue
id objc_autoreleaseReturnValue(id);
void setAtomicSetterHelperFnMap(QualType Ty, llvm::Constant *Fn)
llvm::Function * objc_autorelease
id objc_autorelease(id);
llvm::MDNode * getNoObjCARCExceptionsMetadata()
A pair of helper functions for a __block variable.
static llvm::Constant * EmitNullConstant(CodeGenModule &CGM, const RecordDecl *record, bool asCompleteObject)
llvm::FunctionCallee objc_allocWithZone
void objc_allocWithZone(id);
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate.h) and friends (in DeclFriend.h).
MicrosoftVTableContext & getMicrosoftVTableContext()
Definition: CGVTables.h:82
Represents a C++ struct/union/class.
Definition: DeclCXX.h:300
llvm::Function * objc_storeStrong
void objc_storeStrong(id*, id);
A specialization of Address that requires the address to be an LLVM Constant.
Definition: Address.h:74
llvm::Function * objc_loadWeak
id objc_loadWeak(id*);
OrderGlobalInits(unsigned int p, unsigned int l)
This represents &#39;#pragma omp declare mapper ...&#39; directive.
Definition: DeclOpenMP.h:217
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1681
HeaderSearchOptions - Helper class for storing options related to the initialization of the HeaderSea...
CGCXXABI & getCXXABI() const
llvm::Function * objc_retain
id objc_retain(id);
GVALinkage
A more specific kind of linkage than enum Linkage.
Definition: Linkage.h:73
llvm::Function * objc_autoreleasePoolPush
void *objc_autoreleasePoolPush(void);
This structure provides a set of types that are commonly used during IR emission. ...
CodeGenVTables & getVTables()
LValue - This represents an lvalue references.
Definition: CGValue.h:166
This represents a decl that may have a name.
Definition: Decl.h:248
A Microsoft C++ __uuidof expression, which gets the _GUID that corresponds to the supplied type or ex...
Definition: ExprCXX.h:904
SanitizerMetadata * getSanitizerMetadata()
This represents &#39;#pragma omp threadprivate ...&#39; directive.
Definition: DeclOpenMP.h:39
Abstract information about a function or function prototype.
Definition: CGCall.h:44
llvm::Function * objc_retainBlock
id objc_retainBlock(id);
const llvm::Triple & getTriple() const