clang  3.8.0
CodeGenFunction.h
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1 //===-- CodeGenFunction.h - Per-Function state for LLVM CodeGen -*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This is the internal per-function state used for llvm translation.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENFUNCTION_H
15 #define LLVM_CLANG_LIB_CODEGEN_CODEGENFUNCTION_H
16 
17 #include "CGBuilder.h"
18 #include "CGDebugInfo.h"
19 #include "CGLoopInfo.h"
20 #include "CGValue.h"
21 #include "CodeGenModule.h"
22 #include "CodeGenPGO.h"
23 #include "EHScopeStack.h"
24 #include "clang/AST/CharUnits.h"
25 #include "clang/AST/ExprCXX.h"
26 #include "clang/AST/ExprObjC.h"
27 #include "clang/AST/ExprOpenMP.h"
28 #include "clang/AST/Type.h"
29 #include "clang/Basic/ABI.h"
32 #include "clang/Basic/TargetInfo.h"
34 #include "llvm/ADT/ArrayRef.h"
35 #include "llvm/ADT/DenseMap.h"
36 #include "llvm/ADT/SmallVector.h"
37 #include "llvm/IR/ValueHandle.h"
38 #include "llvm/Support/Debug.h"
39 
40 namespace llvm {
41 class BasicBlock;
42 class LLVMContext;
43 class MDNode;
44 class Module;
45 class SwitchInst;
46 class Twine;
47 class Value;
48 class CallSite;
49 }
50 
51 namespace clang {
52 class ASTContext;
53 class BlockDecl;
54 class CXXDestructorDecl;
55 class CXXForRangeStmt;
56 class CXXTryStmt;
57 class Decl;
58 class LabelDecl;
59 class EnumConstantDecl;
60 class FunctionDecl;
61 class FunctionProtoType;
62 class LabelStmt;
63 class ObjCContainerDecl;
64 class ObjCInterfaceDecl;
65 class ObjCIvarDecl;
66 class ObjCMethodDecl;
67 class ObjCImplementationDecl;
68 class ObjCPropertyImplDecl;
69 class TargetInfo;
70 class TargetCodeGenInfo;
71 class VarDecl;
72 class ObjCForCollectionStmt;
73 class ObjCAtTryStmt;
74 class ObjCAtThrowStmt;
75 class ObjCAtSynchronizedStmt;
76 class ObjCAutoreleasePoolStmt;
77 
78 namespace CodeGen {
79 class CodeGenTypes;
80 class CGFunctionInfo;
81 class CGRecordLayout;
82 class CGBlockInfo;
83 class CGCXXABI;
84 class BlockByrefHelpers;
85 class BlockByrefInfo;
86 class BlockFlags;
87 class BlockFieldFlags;
88 
89 /// The kind of evaluation to perform on values of a particular
90 /// type. Basically, is the code in CGExprScalar, CGExprComplex, or
91 /// CGExprAgg?
92 ///
93 /// TODO: should vectors maybe be split out into their own thing?
98 };
99 
100 /// CodeGenFunction - This class organizes the per-function state that is used
101 /// while generating LLVM code.
103  CodeGenFunction(const CodeGenFunction &) = delete;
104  void operator=(const CodeGenFunction &) = delete;
105 
106  friend class CGCXXABI;
107 public:
108  /// A jump destination is an abstract label, branching to which may
109  /// require a jump out through normal cleanups.
110  struct JumpDest {
111  JumpDest() : Block(nullptr), ScopeDepth(), Index(0) {}
112  JumpDest(llvm::BasicBlock *Block,
114  unsigned Index)
115  : Block(Block), ScopeDepth(Depth), Index(Index) {}
116 
117  bool isValid() const { return Block != nullptr; }
118  llvm::BasicBlock *getBlock() const { return Block; }
119  EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; }
120  unsigned getDestIndex() const { return Index; }
121 
122  // This should be used cautiously.
124  ScopeDepth = depth;
125  }
126 
127  private:
128  llvm::BasicBlock *Block;
130  unsigned Index;
131  };
132 
133  CodeGenModule &CGM; // Per-module state.
135 
136  typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy;
139 
140  /// \brief CGBuilder insert helper. This function is called after an
141  /// instruction is created using Builder.
142  void InsertHelper(llvm::Instruction *I, const llvm::Twine &Name,
143  llvm::BasicBlock *BB,
144  llvm::BasicBlock::iterator InsertPt) const;
145 
146  /// CurFuncDecl - Holds the Decl for the current outermost
147  /// non-closure context.
149  /// CurCodeDecl - This is the inner-most code context, which includes blocks.
153  llvm::Function *CurFn;
154 
155  /// CurGD - The GlobalDecl for the current function being compiled.
157 
158  /// PrologueCleanupDepth - The cleanup depth enclosing all the
159  /// cleanups associated with the parameters.
161 
162  /// ReturnBlock - Unified return block.
164 
165  /// ReturnValue - The temporary alloca to hold the return
166  /// value. This is invalid iff the function has no return value.
168 
169  /// AllocaInsertPoint - This is an instruction in the entry block before which
170  /// we prefer to insert allocas.
171  llvm::AssertingVH<llvm::Instruction> AllocaInsertPt;
172 
173  /// \brief API for captured statement code generation.
175  public:
177  : Kind(K), ThisValue(nullptr), CXXThisFieldDecl(nullptr) {}
180  : Kind(K), ThisValue(nullptr), CXXThisFieldDecl(nullptr) {
181 
185  E = S.capture_end();
186  I != E; ++I, ++Field) {
187  if (I->capturesThis())
188  CXXThisFieldDecl = *Field;
189  else if (I->capturesVariable())
190  CaptureFields[I->getCapturedVar()] = *Field;
191  }
192  }
193 
194  virtual ~CGCapturedStmtInfo();
195 
196  CapturedRegionKind getKind() const { return Kind; }
197 
198  virtual void setContextValue(llvm::Value *V) { ThisValue = V; }
199  // \brief Retrieve the value of the context parameter.
200  virtual llvm::Value *getContextValue() const { return ThisValue; }
201 
202  /// \brief Lookup the captured field decl for a variable.
203  virtual const FieldDecl *lookup(const VarDecl *VD) const {
204  return CaptureFields.lookup(VD);
205  }
206 
207  bool isCXXThisExprCaptured() const { return getThisFieldDecl() != nullptr; }
208  virtual FieldDecl *getThisFieldDecl() const { return CXXThisFieldDecl; }
209 
210  static bool classof(const CGCapturedStmtInfo *) {
211  return true;
212  }
213 
214  /// \brief Emit the captured statement body.
215  virtual void EmitBody(CodeGenFunction &CGF, const Stmt *S) {
217  CGF.EmitStmt(S);
218  }
219 
220  /// \brief Get the name of the capture helper.
221  virtual StringRef getHelperName() const { return "__captured_stmt"; }
222 
223  private:
224  /// \brief The kind of captured statement being generated.
226 
227  /// \brief Keep the map between VarDecl and FieldDecl.
228  llvm::SmallDenseMap<const VarDecl *, FieldDecl *> CaptureFields;
229 
230  /// \brief The base address of the captured record, passed in as the first
231  /// argument of the parallel region function.
232  llvm::Value *ThisValue;
233 
234  /// \brief Captured 'this' type.
235  FieldDecl *CXXThisFieldDecl;
236  };
238 
239  /// \brief RAII for correct setting/restoring of CapturedStmtInfo.
241  private:
242  CodeGenFunction &CGF;
243  CGCapturedStmtInfo *PrevCapturedStmtInfo;
244  public:
246  CGCapturedStmtInfo *NewCapturedStmtInfo)
247  : CGF(CGF), PrevCapturedStmtInfo(CGF.CapturedStmtInfo) {
248  CGF.CapturedStmtInfo = NewCapturedStmtInfo;
249  }
250  ~CGCapturedStmtRAII() { CGF.CapturedStmtInfo = PrevCapturedStmtInfo; }
251  };
252 
253  /// \brief Sanitizers enabled for this function.
255 
256  /// \brief True if CodeGen currently emits code implementing sanitizer checks.
258 
259  /// \brief RAII object to set/unset CodeGenFunction::IsSanitizerScope.
261  CodeGenFunction *CGF;
262  public:
264  ~SanitizerScope();
265  };
266 
267  /// In C++, whether we are code generating a thunk. This controls whether we
268  /// should emit cleanups.
270 
271  /// In ARC, whether we should autorelease the return value.
273 
274  /// Whether we processed a Microsoft-style asm block during CodeGen. These can
275  /// potentially set the return value.
277 
278  /// True if the current function is an outlined SEH helper. This can be a
279  /// finally block or filter expression.
281 
284 
285  llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields;
287 
288  /// \brief A mapping from NRVO variables to the flags used to indicate
289  /// when the NRVO has been applied to this variable.
290  llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags;
291 
295 
296  llvm::Instruction *CurrentFuncletPad = nullptr;
297 
298  /// Header for data within LifetimeExtendedCleanupStack.
300  /// The size of the following cleanup object.
301  unsigned Size;
302  /// The kind of cleanup to push: a value from the CleanupKind enumeration.
304 
305  size_t getSize() const { return Size; }
306  CleanupKind getKind() const { return Kind; }
307  };
308 
309  /// i32s containing the indexes of the cleanup destinations.
310  llvm::AllocaInst *NormalCleanupDest;
311 
313 
314  /// FirstBlockInfo - The head of a singly-linked-list of block layouts.
316 
317  /// EHResumeBlock - Unified block containing a call to llvm.eh.resume.
318  llvm::BasicBlock *EHResumeBlock;
319 
320  /// The exception slot. All landing pads write the current exception pointer
321  /// into this alloca.
323 
324  /// The selector slot. Under the MandatoryCleanup model, all landing pads
325  /// write the current selector value into this alloca.
326  llvm::AllocaInst *EHSelectorSlot;
327 
328  /// A stack of exception code slots. Entering an __except block pushes a slot
329  /// on the stack and leaving pops one. The __exception_code() intrinsic loads
330  /// a value from the top of the stack.
332 
333  /// Value returned by __exception_info intrinsic.
334  llvm::Value *SEHInfo = nullptr;
335 
336  /// Emits a landing pad for the current EH stack.
337  llvm::BasicBlock *EmitLandingPad();
338 
339  llvm::BasicBlock *getInvokeDestImpl();
340 
341  template <class T>
343  return DominatingValue<T>::save(*this, value);
344  }
345 
346 public:
347  /// ObjCEHValueStack - Stack of Objective-C exception values, used for
348  /// rethrows.
350 
351  /// A class controlling the emission of a finally block.
352  class FinallyInfo {
353  /// Where the catchall's edge through the cleanup should go.
354  JumpDest RethrowDest;
355 
356  /// A function to call to enter the catch.
357  llvm::Constant *BeginCatchFn;
358 
359  /// An i1 variable indicating whether or not the @finally is
360  /// running for an exception.
361  llvm::AllocaInst *ForEHVar;
362 
363  /// An i8* variable into which the exception pointer to rethrow
364  /// has been saved.
365  llvm::AllocaInst *SavedExnVar;
366 
367  public:
368  void enter(CodeGenFunction &CGF, const Stmt *Finally,
369  llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn,
370  llvm::Constant *rethrowFn);
371  void exit(CodeGenFunction &CGF);
372  };
373 
374  /// Returns true inside SEH __try blocks.
375  bool isSEHTryScope() const { return !SEHTryEpilogueStack.empty(); }
376 
377  /// Returns true while emitting a cleanuppad.
378  bool isCleanupPadScope() const {
379  return CurrentFuncletPad && isa<llvm::CleanupPadInst>(CurrentFuncletPad);
380  }
381 
382  /// pushFullExprCleanup - Push a cleanup to be run at the end of the
383  /// current full-expression. Safe against the possibility that
384  /// we're currently inside a conditionally-evaluated expression.
385  template <class T, class... As>
387  // If we're not in a conditional branch, or if none of the
388  // arguments requires saving, then use the unconditional cleanup.
389  if (!isInConditionalBranch())
390  return EHStack.pushCleanup<T>(kind, A...);
391 
392  // Stash values in a tuple so we can guarantee the order of saves.
393  typedef std::tuple<typename DominatingValue<As>::saved_type...> SavedTuple;
394  SavedTuple Saved{saveValueInCond(A)...};
395 
396  typedef EHScopeStack::ConditionalCleanup<T, As...> CleanupType;
397  EHStack.pushCleanupTuple<CleanupType>(kind, Saved);
399  }
400 
401  /// \brief Queue a cleanup to be pushed after finishing the current
402  /// full-expression.
403  template <class T, class... As>
405  assert(!isInConditionalBranch() && "can't defer conditional cleanup");
406 
407  LifetimeExtendedCleanupHeader Header = { sizeof(T), Kind };
408 
409  size_t OldSize = LifetimeExtendedCleanupStack.size();
411  LifetimeExtendedCleanupStack.size() + sizeof(Header) + Header.Size);
412 
413  static_assert(sizeof(Header) % llvm::AlignOf<T>::Alignment == 0,
414  "Cleanup will be allocated on misaligned address");
415  char *Buffer = &LifetimeExtendedCleanupStack[OldSize];
417  new (Buffer + sizeof(Header)) T(A...);
418  }
419 
420  /// Set up the last cleaup that was pushed as a conditional
421  /// full-expression cleanup.
422  void initFullExprCleanup();
423 
424  /// PushDestructorCleanup - Push a cleanup to call the
425  /// complete-object destructor of an object of the given type at the
426  /// given address. Does nothing if T is not a C++ class type with a
427  /// non-trivial destructor.
428  void PushDestructorCleanup(QualType T, Address Addr);
429 
430  /// PushDestructorCleanup - Push a cleanup to call the
431  /// complete-object variant of the given destructor on the object at
432  /// the given address.
433  void PushDestructorCleanup(const CXXDestructorDecl *Dtor, Address Addr);
434 
435  /// PopCleanupBlock - Will pop the cleanup entry on the stack and
436  /// process all branch fixups.
437  void PopCleanupBlock(bool FallThroughIsBranchThrough = false);
438 
439  /// DeactivateCleanupBlock - Deactivates the given cleanup block.
440  /// The block cannot be reactivated. Pops it if it's the top of the
441  /// stack.
442  ///
443  /// \param DominatingIP - An instruction which is known to
444  /// dominate the current IP (if set) and which lies along
445  /// all paths of execution between the current IP and the
446  /// the point at which the cleanup comes into scope.
448  llvm::Instruction *DominatingIP);
449 
450  /// ActivateCleanupBlock - Activates an initially-inactive cleanup.
451  /// Cannot be used to resurrect a deactivated cleanup.
452  ///
453  /// \param DominatingIP - An instruction which is known to
454  /// dominate the current IP (if set) and which lies along
455  /// all paths of execution between the current IP and the
456  /// the point at which the cleanup comes into scope.
458  llvm::Instruction *DominatingIP);
459 
460  /// \brief Enters a new scope for capturing cleanups, all of which
461  /// will be executed once the scope is exited.
463  EHScopeStack::stable_iterator CleanupStackDepth;
464  size_t LifetimeExtendedCleanupStackSize;
465  bool OldDidCallStackSave;
466  protected:
468  private:
469 
470  RunCleanupsScope(const RunCleanupsScope &) = delete;
471  void operator=(const RunCleanupsScope &) = delete;
472 
473  protected:
475 
476  public:
477  /// \brief Enter a new cleanup scope.
479  : PerformCleanup(true), CGF(CGF)
480  {
481  CleanupStackDepth = CGF.EHStack.stable_begin();
482  LifetimeExtendedCleanupStackSize =
483  CGF.LifetimeExtendedCleanupStack.size();
484  OldDidCallStackSave = CGF.DidCallStackSave;
485  CGF.DidCallStackSave = false;
486  }
487 
488  /// \brief Exit this cleanup scope, emitting any accumulated
489  /// cleanups.
491  if (PerformCleanup) {
492  CGF.DidCallStackSave = OldDidCallStackSave;
493  CGF.PopCleanupBlocks(CleanupStackDepth,
494  LifetimeExtendedCleanupStackSize);
495  }
496  }
497 
498  /// \brief Determine whether this scope requires any cleanups.
499  bool requiresCleanups() const {
500  return CGF.EHStack.stable_begin() != CleanupStackDepth;
501  }
502 
503  /// \brief Force the emission of cleanups now, instead of waiting
504  /// until this object is destroyed.
505  void ForceCleanup() {
506  assert(PerformCleanup && "Already forced cleanup");
507  CGF.DidCallStackSave = OldDidCallStackSave;
508  CGF.PopCleanupBlocks(CleanupStackDepth,
509  LifetimeExtendedCleanupStackSize);
510  PerformCleanup = false;
511  }
512  };
513 
515  SourceRange Range;
517  LexicalScope *ParentScope;
518 
519  LexicalScope(const LexicalScope &) = delete;
520  void operator=(const LexicalScope &) = delete;
521 
522  public:
523  /// \brief Enter a new cleanup scope.
525  : RunCleanupsScope(CGF), Range(Range), ParentScope(CGF.CurLexicalScope) {
526  CGF.CurLexicalScope = this;
527  if (CGDebugInfo *DI = CGF.getDebugInfo())
528  DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin());
529  }
530 
531  void addLabel(const LabelDecl *label) {
532  assert(PerformCleanup && "adding label to dead scope?");
533  Labels.push_back(label);
534  }
535 
536  /// \brief Exit this cleanup scope, emitting any accumulated
537  /// cleanups.
539  if (CGDebugInfo *DI = CGF.getDebugInfo())
540  DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd());
541 
542  // If we should perform a cleanup, force them now. Note that
543  // this ends the cleanup scope before rescoping any labels.
544  if (PerformCleanup) {
545  ApplyDebugLocation DL(CGF, Range.getEnd());
546  ForceCleanup();
547  }
548  }
549 
550  /// \brief Force the emission of cleanups now, instead of waiting
551  /// until this object is destroyed.
552  void ForceCleanup() {
553  CGF.CurLexicalScope = ParentScope;
555 
556  if (!Labels.empty())
557  rescopeLabels();
558  }
559 
560  void rescopeLabels();
561  };
562 
563  typedef llvm::DenseMap<const Decl *, Address> DeclMapTy;
564 
565  /// \brief The scope used to remap some variables as private in the OpenMP
566  /// loop body (or other captured region emitted without outlining), and to
567  /// restore old vars back on exit.
569  DeclMapTy SavedLocals;
570  DeclMapTy SavedPrivates;
571 
572  private:
573  OMPPrivateScope(const OMPPrivateScope &) = delete;
574  void operator=(const OMPPrivateScope &) = delete;
575 
576  public:
577  /// \brief Enter a new OpenMP private scope.
579 
580  /// \brief Registers \a LocalVD variable as a private and apply \a
581  /// PrivateGen function for it to generate corresponding private variable.
582  /// \a PrivateGen returns an address of the generated private variable.
583  /// \return true if the variable is registered as private, false if it has
584  /// been privatized already.
585  bool
586  addPrivate(const VarDecl *LocalVD,
587  llvm::function_ref<Address()> PrivateGen) {
588  assert(PerformCleanup && "adding private to dead scope");
589 
590  // Only save it once.
591  if (SavedLocals.count(LocalVD)) return false;
592 
593  // Copy the existing local entry to SavedLocals.
594  auto it = CGF.LocalDeclMap.find(LocalVD);
595  if (it != CGF.LocalDeclMap.end()) {
596  SavedLocals.insert({LocalVD, it->second});
597  } else {
598  SavedLocals.insert({LocalVD, Address::invalid()});
599  }
600 
601  // Generate the private entry.
602  Address Addr = PrivateGen();
603  QualType VarTy = LocalVD->getType();
604  if (VarTy->isReferenceType()) {
605  Address Temp = CGF.CreateMemTemp(VarTy);
606  CGF.Builder.CreateStore(Addr.getPointer(), Temp);
607  Addr = Temp;
608  }
609  SavedPrivates.insert({LocalVD, Addr});
610 
611  return true;
612  }
613 
614  /// \brief Privatizes local variables previously registered as private.
615  /// Registration is separate from the actual privatization to allow
616  /// initializers use values of the original variables, not the private one.
617  /// This is important, for example, if the private variable is a class
618  /// variable initialized by a constructor that references other private
619  /// variables. But at initialization original variables must be used, not
620  /// private copies.
621  /// \return true if at least one variable was privatized, false otherwise.
622  bool Privatize() {
623  copyInto(SavedPrivates, CGF.LocalDeclMap);
624  SavedPrivates.clear();
625  return !SavedLocals.empty();
626  }
627 
628  void ForceCleanup() {
630  copyInto(SavedLocals, CGF.LocalDeclMap);
631  SavedLocals.clear();
632  }
633 
634  /// \brief Exit scope - all the mapped variables are restored.
636  if (PerformCleanup)
637  ForceCleanup();
638  }
639 
640  private:
641  /// Copy all the entries in the source map over the corresponding
642  /// entries in the destination, which must exist.
643  static void copyInto(const DeclMapTy &src, DeclMapTy &dest) {
644  for (auto &pair : src) {
645  if (!pair.second.isValid()) {
646  dest.erase(pair.first);
647  continue;
648  }
649 
650  auto it = dest.find(pair.first);
651  if (it != dest.end()) {
652  it->second = pair.second;
653  } else {
654  dest.insert(pair);
655  }
656  }
657  }
658  };
659 
660  /// \brief Takes the old cleanup stack size and emits the cleanup blocks
661  /// that have been added.
662  void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize);
663 
664  /// \brief Takes the old cleanup stack size and emits the cleanup blocks
665  /// that have been added, then adds all lifetime-extended cleanups from
666  /// the given position to the stack.
667  void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize,
668  size_t OldLifetimeExtendedStackSize);
669 
670  void ResolveBranchFixups(llvm::BasicBlock *Target);
671 
672  /// The given basic block lies in the current EH scope, but may be a
673  /// target of a potentially scope-crossing jump; get a stable handle
674  /// to which we can perform this jump later.
676  return JumpDest(Target,
679  }
680 
681  /// The given basic block lies in the current EH scope, but may be a
682  /// target of a potentially scope-crossing jump; get a stable handle
683  /// to which we can perform this jump later.
684  JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) {
686  }
687 
688  /// EmitBranchThroughCleanup - Emit a branch from the current insert
689  /// block through the normal cleanup handling code (if any) and then
690  /// on to \arg Dest.
691  void EmitBranchThroughCleanup(JumpDest Dest);
692 
693  /// isObviouslyBranchWithoutCleanups - Return true if a branch to the
694  /// specified destination obviously has no cleanups to run. 'false' is always
695  /// a conservatively correct answer for this method.
696  bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const;
697 
698  /// popCatchScope - Pops the catch scope at the top of the EHScope
699  /// stack, emitting any required code (other than the catch handlers
700  /// themselves).
701  void popCatchScope();
702 
703  llvm::BasicBlock *getEHResumeBlock(bool isCleanup);
704  llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope);
705  llvm::BasicBlock *getMSVCDispatchBlock(EHScopeStack::stable_iterator scope);
706 
707  /// An object to manage conditionally-evaluated expressions.
709  llvm::BasicBlock *StartBB;
710 
711  public:
713  : StartBB(CGF.Builder.GetInsertBlock()) {}
714 
715  void begin(CodeGenFunction &CGF) {
716  assert(CGF.OutermostConditional != this);
717  if (!CGF.OutermostConditional)
718  CGF.OutermostConditional = this;
719  }
720 
721  void end(CodeGenFunction &CGF) {
722  assert(CGF.OutermostConditional != nullptr);
723  if (CGF.OutermostConditional == this)
724  CGF.OutermostConditional = nullptr;
725  }
726 
727  /// Returns a block which will be executed prior to each
728  /// evaluation of the conditional code.
729  llvm::BasicBlock *getStartingBlock() const {
730  return StartBB;
731  }
732  };
733 
734  /// isInConditionalBranch - Return true if we're currently emitting
735  /// one branch or the other of a conditional expression.
736  bool isInConditionalBranch() const { return OutermostConditional != nullptr; }
737 
739  assert(isInConditionalBranch());
740  llvm::BasicBlock *block = OutermostConditional->getStartingBlock();
741  auto store = new llvm::StoreInst(value, addr.getPointer(), &block->back());
742  store->setAlignment(addr.getAlignment().getQuantity());
743  }
744 
745  /// An RAII object to record that we're evaluating a statement
746  /// expression.
748  CodeGenFunction &CGF;
749 
750  /// We have to save the outermost conditional: cleanups in a
751  /// statement expression aren't conditional just because the
752  /// StmtExpr is.
753  ConditionalEvaluation *SavedOutermostConditional;
754 
755  public:
757  : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) {
758  CGF.OutermostConditional = nullptr;
759  }
760 
762  CGF.OutermostConditional = SavedOutermostConditional;
763  CGF.EnsureInsertPoint();
764  }
765  };
766 
767  /// An object which temporarily prevents a value from being
768  /// destroyed by aggressive peephole optimizations that assume that
769  /// all uses of a value have been realized in the IR.
771  llvm::Instruction *Inst;
772  friend class CodeGenFunction;
773 
774  public:
775  PeepholeProtection() : Inst(nullptr) {}
776  };
777 
778  /// A non-RAII class containing all the information about a bound
779  /// opaque value. OpaqueValueMapping, below, is a RAII wrapper for
780  /// this which makes individual mappings very simple; using this
781  /// class directly is useful when you have a variable number of
782  /// opaque values or don't want the RAII functionality for some
783  /// reason.
785  const OpaqueValueExpr *OpaqueValue;
786  bool BoundLValue;
788 
790  bool boundLValue)
791  : OpaqueValue(ov), BoundLValue(boundLValue) {}
792  public:
793  OpaqueValueMappingData() : OpaqueValue(nullptr) {}
794 
795  static bool shouldBindAsLValue(const Expr *expr) {
796  // gl-values should be bound as l-values for obvious reasons.
797  // Records should be bound as l-values because IR generation
798  // always keeps them in memory. Expressions of function type
799  // act exactly like l-values but are formally required to be
800  // r-values in C.
801  return expr->isGLValue() ||
802  expr->getType()->isFunctionType() ||
804  }
805 
807  const OpaqueValueExpr *ov,
808  const Expr *e) {
809  if (shouldBindAsLValue(ov))
810  return bind(CGF, ov, CGF.EmitLValue(e));
811  return bind(CGF, ov, CGF.EmitAnyExpr(e));
812  }
813 
815  const OpaqueValueExpr *ov,
816  const LValue &lv) {
817  assert(shouldBindAsLValue(ov));
818  CGF.OpaqueLValues.insert(std::make_pair(ov, lv));
819  return OpaqueValueMappingData(ov, true);
820  }
821 
823  const OpaqueValueExpr *ov,
824  const RValue &rv) {
825  assert(!shouldBindAsLValue(ov));
826  CGF.OpaqueRValues.insert(std::make_pair(ov, rv));
827 
828  OpaqueValueMappingData data(ov, false);
829 
830  // Work around an extremely aggressive peephole optimization in
831  // EmitScalarConversion which assumes that all other uses of a
832  // value are extant.
833  data.Protection = CGF.protectFromPeepholes(rv);
834 
835  return data;
836  }
837 
838  bool isValid() const { return OpaqueValue != nullptr; }
839  void clear() { OpaqueValue = nullptr; }
840 
841  void unbind(CodeGenFunction &CGF) {
842  assert(OpaqueValue && "no data to unbind!");
843 
844  if (BoundLValue) {
845  CGF.OpaqueLValues.erase(OpaqueValue);
846  } else {
847  CGF.OpaqueRValues.erase(OpaqueValue);
848  CGF.unprotectFromPeepholes(Protection);
849  }
850  }
851  };
852 
853  /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr.
855  CodeGenFunction &CGF;
857 
858  public:
859  static bool shouldBindAsLValue(const Expr *expr) {
861  }
862 
863  /// Build the opaque value mapping for the given conditional
864  /// operator if it's the GNU ?: extension. This is a common
865  /// enough pattern that the convenience operator is really
866  /// helpful.
867  ///
869  const AbstractConditionalOperator *op) : CGF(CGF) {
870  if (isa<ConditionalOperator>(op))
871  // Leave Data empty.
872  return;
873 
874  const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op);
876  e->getCommon());
877  }
878 
880  const OpaqueValueExpr *opaqueValue,
881  LValue lvalue)
882  : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) {
883  }
884 
886  const OpaqueValueExpr *opaqueValue,
887  RValue rvalue)
888  : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) {
889  }
890 
891  void pop() {
892  Data.unbind(CGF);
893  Data.clear();
894  }
895 
897  if (Data.isValid()) Data.unbind(CGF);
898  }
899  };
900 
901 private:
902  CGDebugInfo *DebugInfo;
903  bool DisableDebugInfo;
904 
905  /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid
906  /// calling llvm.stacksave for multiple VLAs in the same scope.
907  bool DidCallStackSave;
908 
909  /// IndirectBranch - The first time an indirect goto is seen we create a block
910  /// with an indirect branch. Every time we see the address of a label taken,
911  /// we add the label to the indirect goto. Every subsequent indirect goto is
912  /// codegen'd as a jump to the IndirectBranch's basic block.
913  llvm::IndirectBrInst *IndirectBranch;
914 
915  /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C
916  /// decls.
917  DeclMapTy LocalDeclMap;
918 
919  /// SizeArguments - If a ParmVarDecl had the pass_object_size attribute, this
920  /// will contain a mapping from said ParmVarDecl to its implicit "object_size"
921  /// parameter.
922  llvm::SmallDenseMap<const ParmVarDecl *, const ImplicitParamDecl *, 2>
923  SizeArguments;
924 
925  /// Track escaped local variables with auto storage. Used during SEH
926  /// outlining to produce a call to llvm.localescape.
927  llvm::DenseMap<llvm::AllocaInst *, int> EscapedLocals;
928 
929  /// LabelMap - This keeps track of the LLVM basic block for each C label.
930  llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap;
931 
932  // BreakContinueStack - This keeps track of where break and continue
933  // statements should jump to.
934  struct BreakContinue {
935  BreakContinue(JumpDest Break, JumpDest Continue)
936  : BreakBlock(Break), ContinueBlock(Continue) {}
937 
938  JumpDest BreakBlock;
939  JumpDest ContinueBlock;
940  };
941  SmallVector<BreakContinue, 8> BreakContinueStack;
942 
943  CodeGenPGO PGO;
944 
945  /// Calculate branch weights appropriate for PGO data
946  llvm::MDNode *createProfileWeights(uint64_t TrueCount, uint64_t FalseCount);
947  llvm::MDNode *createProfileWeights(ArrayRef<uint64_t> Weights);
948  llvm::MDNode *createProfileWeightsForLoop(const Stmt *Cond,
949  uint64_t LoopCount);
950 
951 public:
952  /// Increment the profiler's counter for the given statement.
954  if (CGM.getCodeGenOpts().ProfileInstrGenerate)
955  PGO.emitCounterIncrement(Builder, S);
956  PGO.setCurrentStmt(S);
957  }
958 
959  /// Get the profiler's count for the given statement.
960  uint64_t getProfileCount(const Stmt *S) {
961  Optional<uint64_t> Count = PGO.getStmtCount(S);
962  if (!Count.hasValue())
963  return 0;
964  return *Count;
965  }
966 
967  /// Set the profiler's current count.
968  void setCurrentProfileCount(uint64_t Count) {
969  PGO.setCurrentRegionCount(Count);
970  }
971 
972  /// Get the profiler's current count. This is generally the count for the most
973  /// recently incremented counter.
975  return PGO.getCurrentRegionCount();
976  }
977 
978 private:
979 
980  /// SwitchInsn - This is nearest current switch instruction. It is null if
981  /// current context is not in a switch.
982  llvm::SwitchInst *SwitchInsn;
983  /// The branch weights of SwitchInsn when doing instrumentation based PGO.
984  SmallVector<uint64_t, 16> *SwitchWeights;
985 
986  /// CaseRangeBlock - This block holds if condition check for last case
987  /// statement range in current switch instruction.
988  llvm::BasicBlock *CaseRangeBlock;
989 
990  /// OpaqueLValues - Keeps track of the current set of opaque value
991  /// expressions.
992  llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues;
993  llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues;
994 
995  // VLASizeMap - This keeps track of the associated size for each VLA type.
996  // We track this by the size expression rather than the type itself because
997  // in certain situations, like a const qualifier applied to an VLA typedef,
998  // multiple VLA types can share the same size expression.
999  // FIXME: Maybe this could be a stack of maps that is pushed/popped as we
1000  // enter/leave scopes.
1001  llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap;
1002 
1003  /// A block containing a single 'unreachable' instruction. Created
1004  /// lazily by getUnreachableBlock().
1005  llvm::BasicBlock *UnreachableBlock;
1006 
1007  /// Counts of the number return expressions in the function.
1008  unsigned NumReturnExprs;
1009 
1010  /// Count the number of simple (constant) return expressions in the function.
1011  unsigned NumSimpleReturnExprs;
1012 
1013  /// The last regular (non-return) debug location (breakpoint) in the function.
1014  SourceLocation LastStopPoint;
1015 
1016 public:
1017  /// A scope within which we are constructing the fields of an object which
1018  /// might use a CXXDefaultInitExpr. This stashes away a 'this' value to use
1019  /// if we need to evaluate a CXXDefaultInitExpr within the evaluation.
1021  public:
1023  : CGF(CGF), OldCXXDefaultInitExprThis(CGF.CXXDefaultInitExprThis) {
1024  CGF.CXXDefaultInitExprThis = This;
1025  }
1027  CGF.CXXDefaultInitExprThis = OldCXXDefaultInitExprThis;
1028  }
1029 
1030  private:
1031  CodeGenFunction &CGF;
1032  Address OldCXXDefaultInitExprThis;
1033  };
1034 
1035  /// The scope of a CXXDefaultInitExpr. Within this scope, the value of 'this'
1036  /// is overridden to be the object under construction.
1038  public:
1040  : CGF(CGF), OldCXXThisValue(CGF.CXXThisValue),
1041  OldCXXThisAlignment(CGF.CXXThisAlignment) {
1042  CGF.CXXThisValue = CGF.CXXDefaultInitExprThis.getPointer();
1043  CGF.CXXThisAlignment = CGF.CXXDefaultInitExprThis.getAlignment();
1044  }
1046  CGF.CXXThisValue = OldCXXThisValue;
1047  CGF.CXXThisAlignment = OldCXXThisAlignment;
1048  }
1049 
1050  public:
1054  };
1055 
1056 private:
1057  /// CXXThisDecl - When generating code for a C++ member function,
1058  /// this will hold the implicit 'this' declaration.
1059  ImplicitParamDecl *CXXABIThisDecl;
1060  llvm::Value *CXXABIThisValue;
1061  llvm::Value *CXXThisValue;
1062  CharUnits CXXABIThisAlignment;
1063  CharUnits CXXThisAlignment;
1064 
1065  /// The value of 'this' to use when evaluating CXXDefaultInitExprs within
1066  /// this expression.
1067  Address CXXDefaultInitExprThis = Address::invalid();
1068 
1069  /// CXXStructorImplicitParamDecl - When generating code for a constructor or
1070  /// destructor, this will hold the implicit argument (e.g. VTT).
1071  ImplicitParamDecl *CXXStructorImplicitParamDecl;
1072  llvm::Value *CXXStructorImplicitParamValue;
1073 
1074  /// OutermostConditional - Points to the outermost active
1075  /// conditional control. This is used so that we know if a
1076  /// temporary should be destroyed conditionally.
1077  ConditionalEvaluation *OutermostConditional;
1078 
1079  /// The current lexical scope.
1080  LexicalScope *CurLexicalScope;
1081 
1082  /// The current source location that should be used for exception
1083  /// handling code.
1084  SourceLocation CurEHLocation;
1085 
1086  /// BlockByrefInfos - For each __block variable, contains
1087  /// information about the layout of the variable.
1088  llvm::DenseMap<const ValueDecl *, BlockByrefInfo> BlockByrefInfos;
1089 
1090  llvm::BasicBlock *TerminateLandingPad;
1091  llvm::BasicBlock *TerminateHandler;
1092  llvm::BasicBlock *TrapBB;
1093 
1094  /// Add a kernel metadata node to the named metadata node 'opencl.kernels'.
1095  /// In the kernel metadata node, reference the kernel function and metadata
1096  /// nodes for its optional attribute qualifiers (OpenCL 1.1 6.7.2):
1097  /// - A node for the vec_type_hint(<type>) qualifier contains string
1098  /// "vec_type_hint", an undefined value of the <type> data type,
1099  /// and a Boolean that is true if the <type> is integer and signed.
1100  /// - A node for the work_group_size_hint(X,Y,Z) qualifier contains string
1101  /// "work_group_size_hint", and three 32-bit integers X, Y and Z.
1102  /// - A node for the reqd_work_group_size(X,Y,Z) qualifier contains string
1103  /// "reqd_work_group_size", and three 32-bit integers X, Y and Z.
1104  void EmitOpenCLKernelMetadata(const FunctionDecl *FD,
1105  llvm::Function *Fn);
1106 
1107 public:
1108  CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false);
1109  ~CodeGenFunction();
1110 
1111  CodeGenTypes &getTypes() const { return CGM.getTypes(); }
1112  ASTContext &getContext() const { return CGM.getContext(); }
1114  if (DisableDebugInfo)
1115  return nullptr;
1116  return DebugInfo;
1117  }
1118  void disableDebugInfo() { DisableDebugInfo = true; }
1119  void enableDebugInfo() { DisableDebugInfo = false; }
1120 
1122  return CGM.getCodeGenOpts().OptimizationLevel == 0;
1123  }
1124 
1125  const LangOptions &getLangOpts() const { return CGM.getLangOpts(); }
1126 
1127  /// Returns a pointer to the function's exception object and selector slot,
1128  /// which is assigned in every landing pad.
1131 
1132  /// Returns the contents of the function's exception object and selector
1133  /// slots.
1136 
1138 
1139  llvm::BasicBlock *getUnreachableBlock() {
1140  if (!UnreachableBlock) {
1141  UnreachableBlock = createBasicBlock("unreachable");
1142  new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock);
1143  }
1144  return UnreachableBlock;
1145  }
1146 
1147  llvm::BasicBlock *getInvokeDest() {
1148  if (!EHStack.requiresLandingPad()) return nullptr;
1149  return getInvokeDestImpl();
1150  }
1151 
1153  const auto *FD = dyn_cast_or_null<FunctionDecl>(CurCodeDecl);
1154  return FD && FD->usesSEHTry();
1155  }
1156 
1157  const TargetInfo &getTarget() const { return Target; }
1158  llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); }
1159 
1160  //===--------------------------------------------------------------------===//
1161  // Cleanups
1162  //===--------------------------------------------------------------------===//
1163 
1164  typedef void Destroyer(CodeGenFunction &CGF, Address addr, QualType ty);
1165 
1167  Address arrayEndPointer,
1168  QualType elementType,
1169  CharUnits elementAlignment,
1170  Destroyer *destroyer);
1172  llvm::Value *arrayEnd,
1173  QualType elementType,
1174  CharUnits elementAlignment,
1175  Destroyer *destroyer);
1176 
1177  void pushDestroy(QualType::DestructionKind dtorKind,
1178  Address addr, QualType type);
1180  Address addr, QualType type);
1182  Destroyer *destroyer, bool useEHCleanupForArray);
1184  QualType type, Destroyer *destroyer,
1185  bool useEHCleanupForArray);
1186  void pushCallObjectDeleteCleanup(const FunctionDecl *OperatorDelete,
1187  llvm::Value *CompletePtr,
1188  QualType ElementType);
1190  void emitDestroy(Address addr, QualType type, Destroyer *destroyer,
1191  bool useEHCleanupForArray);
1192  llvm::Function *generateDestroyHelper(Address addr, QualType type,
1193  Destroyer *destroyer,
1194  bool useEHCleanupForArray,
1195  const VarDecl *VD);
1197  QualType elementType, CharUnits elementAlign,
1198  Destroyer *destroyer,
1199  bool checkZeroLength, bool useEHCleanup);
1200 
1202 
1203  /// Determines whether an EH cleanup is required to destroy a type
1204  /// with the given destruction kind.
1206  switch (kind) {
1207  case QualType::DK_none:
1208  return false;
1211  return getLangOpts().Exceptions;
1213  return getLangOpts().Exceptions &&
1214  CGM.getCodeGenOpts().ObjCAutoRefCountExceptions;
1215  }
1216  llvm_unreachable("bad destruction kind");
1217  }
1218 
1220  return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup);
1221  }
1222 
1223  //===--------------------------------------------------------------------===//
1224  // Objective-C
1225  //===--------------------------------------------------------------------===//
1226 
1227  void GenerateObjCMethod(const ObjCMethodDecl *OMD);
1228 
1229  void StartObjCMethod(const ObjCMethodDecl *MD, const ObjCContainerDecl *CD);
1230 
1231  /// GenerateObjCGetter - Synthesize an Objective-C property getter function.
1233  const ObjCPropertyImplDecl *PID);
1234  void generateObjCGetterBody(const ObjCImplementationDecl *classImpl,
1235  const ObjCPropertyImplDecl *propImpl,
1236  const ObjCMethodDecl *GetterMothodDecl,
1237  llvm::Constant *AtomicHelperFn);
1238 
1240  ObjCMethodDecl *MD, bool ctor);
1241 
1242  /// GenerateObjCSetter - Synthesize an Objective-C property setter function
1243  /// for the given property.
1245  const ObjCPropertyImplDecl *PID);
1246  void generateObjCSetterBody(const ObjCImplementationDecl *classImpl,
1247  const ObjCPropertyImplDecl *propImpl,
1248  llvm::Constant *AtomicHelperFn);
1249 
1250  //===--------------------------------------------------------------------===//
1251  // Block Bits
1252  //===--------------------------------------------------------------------===//
1253 
1256  static void destroyBlockInfos(CGBlockInfo *info);
1257 
1258  llvm::Function *GenerateBlockFunction(GlobalDecl GD,
1259  const CGBlockInfo &Info,
1260  const DeclMapTy &ldm,
1261  bool IsLambdaConversionToBlock);
1262 
1263  llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo);
1264  llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo);
1266  const ObjCPropertyImplDecl *PID);
1268  const ObjCPropertyImplDecl *PID);
1270 
1271  void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags);
1272 
1273  class AutoVarEmission;
1274 
1275  void emitByrefStructureInit(const AutoVarEmission &emission);
1276  void enterByrefCleanup(const AutoVarEmission &emission);
1277 
1278  void setBlockContextParameter(const ImplicitParamDecl *D, unsigned argNum,
1279  llvm::Value *ptr);
1280 
1282  Address GetAddrOfBlockDecl(const VarDecl *var, bool ByRef);
1283 
1284  /// BuildBlockByrefAddress - Computes the location of the
1285  /// data in a variable which is declared as __block.
1286  Address emitBlockByrefAddress(Address baseAddr, const VarDecl *V,
1287  bool followForward = true);
1289  const BlockByrefInfo &info,
1290  bool followForward,
1291  const llvm::Twine &name);
1292 
1293  const BlockByrefInfo &getBlockByrefInfo(const VarDecl *var);
1294 
1295  void GenerateCode(GlobalDecl GD, llvm::Function *Fn,
1296  const CGFunctionInfo &FnInfo);
1297  /// \brief Emit code for the start of a function.
1298  /// \param Loc The location to be associated with the function.
1299  /// \param StartLoc The location of the function body.
1300  void StartFunction(GlobalDecl GD,
1301  QualType RetTy,
1302  llvm::Function *Fn,
1303  const CGFunctionInfo &FnInfo,
1304  const FunctionArgList &Args,
1306  SourceLocation StartLoc = SourceLocation());
1307 
1309  void EmitDestructorBody(FunctionArgList &Args);
1311  void EmitFunctionBody(FunctionArgList &Args, const Stmt *Body);
1312  void EmitBlockWithFallThrough(llvm::BasicBlock *BB, const Stmt *S);
1313 
1314  void EmitForwardingCallToLambda(const CXXMethodDecl *LambdaCallOperator,
1315  CallArgList &CallArgs);
1320  void EmitAsanPrologueOrEpilogue(bool Prologue);
1321 
1322  /// \brief Emit the unified return block, trying to avoid its emission when
1323  /// possible.
1324  /// \return The debug location of the user written return statement if the
1325  /// return block is is avoided.
1326  llvm::DebugLoc EmitReturnBlock();
1327 
1328  /// FinishFunction - Complete IR generation of the current function. It is
1329  /// legal to call this function even if there is no current insertion point.
1331 
1332  void StartThunk(llvm::Function *Fn, GlobalDecl GD,
1333  const CGFunctionInfo &FnInfo);
1334 
1335  void EmitCallAndReturnForThunk(llvm::Value *Callee, const ThunkInfo *Thunk);
1336 
1337  void FinishThunk();
1338 
1339  /// Emit a musttail call for a thunk with a potentially adjusted this pointer.
1340  void EmitMustTailThunk(const CXXMethodDecl *MD, llvm::Value *AdjustedThisPtr,
1341  llvm::Value *Callee);
1342 
1343  /// Generate a thunk for the given method.
1344  void generateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo,
1345  GlobalDecl GD, const ThunkInfo &Thunk);
1346 
1347  llvm::Function *GenerateVarArgsThunk(llvm::Function *Fn,
1348  const CGFunctionInfo &FnInfo,
1349  GlobalDecl GD, const ThunkInfo &Thunk);
1350 
1352  FunctionArgList &Args);
1353 
1354  void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init,
1355  ArrayRef<VarDecl *> ArrayIndexes);
1356 
1357  /// Struct with all informations about dynamic [sub]class needed to set vptr.
1358  struct VPtr {
1363  };
1364 
1365  /// Initialize the vtable pointer of the given subobject.
1366  void InitializeVTablePointer(const VPtr &vptr);
1367 
1369 
1370  typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy;
1371  VPtrsVector getVTablePointers(const CXXRecordDecl *VTableClass);
1372 
1373  void getVTablePointers(BaseSubobject Base, const CXXRecordDecl *NearestVBase,
1374  CharUnits OffsetFromNearestVBase,
1375  bool BaseIsNonVirtualPrimaryBase,
1376  const CXXRecordDecl *VTableClass,
1377  VisitedVirtualBasesSetTy &VBases, VPtrsVector &vptrs);
1378 
1379  void InitializeVTablePointers(const CXXRecordDecl *ClassDecl);
1380 
1381  /// GetVTablePtr - Return the Value of the vtable pointer member pointed
1382  /// to by This.
1383  llvm::Value *GetVTablePtr(Address This, llvm::Type *VTableTy,
1384  const CXXRecordDecl *VTableClass);
1385 
1391  };
1392 
1393  /// \brief Derived is the presumed address of an object of type T after a
1394  /// cast. If T is a polymorphic class type, emit a check that the virtual
1395  /// table for Derived belongs to a class derived from T.
1397  bool MayBeNull, CFITypeCheckKind TCK,
1398  SourceLocation Loc);
1399 
1400  /// EmitVTablePtrCheckForCall - Virtual method MD is being called via VTable.
1401  /// If vptr CFI is enabled, emit a check that VTable is valid.
1402  void EmitVTablePtrCheckForCall(const CXXMethodDecl *MD, llvm::Value *VTable,
1403  CFITypeCheckKind TCK, SourceLocation Loc);
1404 
1405  /// EmitVTablePtrCheck - Emit a check that VTable is a valid virtual table for
1406  /// RD using llvm.bitset.test.
1407  void EmitVTablePtrCheck(const CXXRecordDecl *RD, llvm::Value *VTable,
1408  CFITypeCheckKind TCK, SourceLocation Loc);
1409 
1410  /// CanDevirtualizeMemberFunctionCalls - Checks whether virtual calls on given
1411  /// expr can be devirtualized.
1413  const CXXMethodDecl *MD);
1414 
1415  /// EnterDtorCleanups - Enter the cleanups necessary to complete the
1416  /// given phase of destruction for a destructor. The end result
1417  /// should call destructors on members and base classes in reverse
1418  /// order of their construction.
1420 
1421  /// ShouldInstrumentFunction - Return true if the current function should be
1422  /// instrumented with __cyg_profile_func_* calls
1423  bool ShouldInstrumentFunction();
1424 
1425  /// EmitFunctionInstrumentation - Emit LLVM code to call the specified
1426  /// instrumentation function with the current function and the call site, if
1427  /// function instrumentation is enabled.
1428  void EmitFunctionInstrumentation(const char *Fn);
1429 
1430  /// EmitMCountInstrumentation - Emit call to .mcount.
1432 
1433  /// EmitFunctionProlog - Emit the target specific LLVM code to load the
1434  /// arguments for the given function. This is also responsible for naming the
1435  /// LLVM function arguments.
1436  void EmitFunctionProlog(const CGFunctionInfo &FI,
1437  llvm::Function *Fn,
1438  const FunctionArgList &Args);
1439 
1440  /// EmitFunctionEpilog - Emit the target specific LLVM code to return the
1441  /// given temporary.
1442  void EmitFunctionEpilog(const CGFunctionInfo &FI, bool EmitRetDbgLoc,
1443  SourceLocation EndLoc);
1444 
1445  /// EmitStartEHSpec - Emit the start of the exception spec.
1446  void EmitStartEHSpec(const Decl *D);
1447 
1448  /// EmitEndEHSpec - Emit the end of the exception spec.
1449  void EmitEndEHSpec(const Decl *D);
1450 
1451  /// getTerminateLandingPad - Return a landing pad that just calls terminate.
1452  llvm::BasicBlock *getTerminateLandingPad();
1453 
1454  /// getTerminateHandler - Return a handler (not a landing pad, just
1455  /// a catch handler) that just calls terminate. This is used when
1456  /// a terminate scope encloses a try.
1457  llvm::BasicBlock *getTerminateHandler();
1458 
1462  return ConvertType(getContext().getTypeDeclType(T));
1463  }
1464 
1465  /// LoadObjCSelf - Load the value of self. This function is only valid while
1466  /// generating code for an Objective-C method.
1468 
1469  /// TypeOfSelfObject - Return type of object that this self represents.
1471 
1472  /// hasAggregateLLVMType - Return true if the specified AST type will map into
1473  /// an aggregate LLVM type or is void.
1475 
1477  return getEvaluationKind(T) == TEK_Scalar;
1478  }
1479 
1481  return getEvaluationKind(T) == TEK_Aggregate;
1482  }
1483 
1484  /// createBasicBlock - Create an LLVM basic block.
1485  llvm::BasicBlock *createBasicBlock(const Twine &name = "",
1486  llvm::Function *parent = nullptr,
1487  llvm::BasicBlock *before = nullptr) {
1488 #ifdef NDEBUG
1489  return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before);
1490 #else
1491  return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before);
1492 #endif
1493  }
1494 
1495  /// getBasicBlockForLabel - Return the LLVM basicblock that the specified
1496  /// label maps to.
1497  JumpDest getJumpDestForLabel(const LabelDecl *S);
1498 
1499  /// SimplifyForwardingBlocks - If the given basic block is only a branch to
1500  /// another basic block, simplify it. This assumes that no other code could
1501  /// potentially reference the basic block.
1502  void SimplifyForwardingBlocks(llvm::BasicBlock *BB);
1503 
1504  /// EmitBlock - Emit the given block \arg BB and set it as the insert point,
1505  /// adding a fall-through branch from the current insert block if
1506  /// necessary. It is legal to call this function even if there is no current
1507  /// insertion point.
1508  ///
1509  /// IsFinished - If true, indicates that the caller has finished emitting
1510  /// branches to the given block and does not expect to emit code into it. This
1511  /// means the block can be ignored if it is unreachable.
1512  void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false);
1513 
1514  /// EmitBlockAfterUses - Emit the given block somewhere hopefully
1515  /// near its uses, and leave the insertion point in it.
1516  void EmitBlockAfterUses(llvm::BasicBlock *BB);
1517 
1518  /// EmitBranch - Emit a branch to the specified basic block from the current
1519  /// insert block, taking care to avoid creation of branches from dummy
1520  /// blocks. It is legal to call this function even if there is no current
1521  /// insertion point.
1522  ///
1523  /// This function clears the current insertion point. The caller should follow
1524  /// calls to this function with calls to Emit*Block prior to generation new
1525  /// code.
1526  void EmitBranch(llvm::BasicBlock *Block);
1527 
1528  /// HaveInsertPoint - True if an insertion point is defined. If not, this
1529  /// indicates that the current code being emitted is unreachable.
1530  bool HaveInsertPoint() const {
1531  return Builder.GetInsertBlock() != nullptr;
1532  }
1533 
1534  /// EnsureInsertPoint - Ensure that an insertion point is defined so that
1535  /// emitted IR has a place to go. Note that by definition, if this function
1536  /// creates a block then that block is unreachable; callers may do better to
1537  /// detect when no insertion point is defined and simply skip IR generation.
1539  if (!HaveInsertPoint())
1541  }
1542 
1543  /// ErrorUnsupported - Print out an error that codegen doesn't support the
1544  /// specified stmt yet.
1545  void ErrorUnsupported(const Stmt *S, const char *Type);
1546 
1547  //===--------------------------------------------------------------------===//
1548  // Helpers
1549  //===--------------------------------------------------------------------===//
1550 
1552  AlignmentSource AlignSource = AlignmentSource::Type) {
1553  return LValue::MakeAddr(Addr, T, getContext(), AlignSource,
1554  CGM.getTBAAInfo(T));
1555  }
1556 
1558  AlignmentSource AlignSource = AlignmentSource::Type) {
1559  return LValue::MakeAddr(Address(V, Alignment), T, getContext(),
1560  AlignSource, CGM.getTBAAInfo(T));
1561  }
1562 
1566  AlignmentSource *Source = nullptr,
1567  bool forPointeeType = false);
1569  AlignmentSource *Source = nullptr);
1570 
1572  AlignmentSource *Source = nullptr);
1574 
1575  /// CreateTempAlloca - This creates a alloca and inserts it into the entry
1576  /// block. The caller is responsible for setting an appropriate alignment on
1577  /// the alloca.
1578  llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty,
1579  const Twine &Name = "tmp");
1581  const Twine &Name = "tmp");
1582 
1583  /// CreateDefaultAlignedTempAlloca - This creates an alloca with the
1584  /// default ABI alignment of the given LLVM type.
1585  ///
1586  /// IMPORTANT NOTE: This is *not* generally the right alignment for
1587  /// any given AST type that happens to have been lowered to the
1588  /// given IR type. This should only ever be used for function-local,
1589  /// IR-driven manipulations like saving and restoring a value. Do
1590  /// not hand this address off to arbitrary IRGen routines, and especially
1591  /// do not pass it as an argument to a function that might expect a
1592  /// properly ABI-aligned value.
1594  const Twine &Name = "tmp");
1595 
1596  /// InitTempAlloca - Provide an initial value for the given alloca which
1597  /// will be observable at all locations in the function.
1598  ///
1599  /// The address should be something that was returned from one of
1600  /// the CreateTempAlloca or CreateMemTemp routines, and the
1601  /// initializer must be valid in the entry block (i.e. it must
1602  /// either be a constant or an argument value).
1603  void InitTempAlloca(Address Alloca, llvm::Value *Value);
1604 
1605  /// CreateIRTemp - Create a temporary IR object of the given type, with
1606  /// appropriate alignment. This routine should only be used when an temporary
1607  /// value needs to be stored into an alloca (for example, to avoid explicit
1608  /// PHI construction), but the type is the IR type, not the type appropriate
1609  /// for storing in memory.
1610  ///
1611  /// That is, this is exactly equivalent to CreateMemTemp, but calling
1612  /// ConvertType instead of ConvertTypeForMem.
1613  Address CreateIRTemp(QualType T, const Twine &Name = "tmp");
1614 
1615  /// CreateMemTemp - Create a temporary memory object of the given type, with
1616  /// appropriate alignment.
1617  Address CreateMemTemp(QualType T, const Twine &Name = "tmp");
1618  Address CreateMemTemp(QualType T, CharUnits Align, const Twine &Name = "tmp");
1619 
1620  /// CreateAggTemp - Create a temporary memory object for the given
1621  /// aggregate type.
1622  AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") {
1624  T.getQualifiers(),
1628  }
1629 
1630  /// Emit a cast to void* in the appropriate address space.
1632 
1633  /// EvaluateExprAsBool - Perform the usual unary conversions on the specified
1634  /// expression and compare the result against zero, returning an Int1Ty value.
1636 
1637  /// EmitIgnoredExpr - Emit an expression in a context which ignores the result.
1638  void EmitIgnoredExpr(const Expr *E);
1639 
1640  /// EmitAnyExpr - Emit code to compute the specified expression which can have
1641  /// any type. The result is returned as an RValue struct. If this is an
1642  /// aggregate expression, the aggloc/agglocvolatile arguments indicate where
1643  /// the result should be returned.
1644  ///
1645  /// \param ignoreResult True if the resulting value isn't used.
1646  RValue EmitAnyExpr(const Expr *E,
1647  AggValueSlot aggSlot = AggValueSlot::ignored(),
1648  bool ignoreResult = false);
1649 
1650  // EmitVAListRef - Emit a "reference" to a va_list; this is either the address
1651  // or the value of the expression, depending on how va_list is defined.
1652  Address EmitVAListRef(const Expr *E);
1653 
1654  /// Emit a "reference" to a __builtin_ms_va_list; this is
1655  /// always the value of the expression, because a __builtin_ms_va_list is a
1656  /// pointer to a char.
1657  Address EmitMSVAListRef(const Expr *E);
1658 
1659  /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will
1660  /// always be accessible even if no aggregate location is provided.
1661  RValue EmitAnyExprToTemp(const Expr *E);
1662 
1663  /// EmitAnyExprToMem - Emits the code necessary to evaluate an
1664  /// arbitrary expression into the given memory location.
1665  void EmitAnyExprToMem(const Expr *E, Address Location,
1666  Qualifiers Quals, bool IsInitializer);
1667 
1668  void EmitAnyExprToExn(const Expr *E, Address Addr);
1669 
1670  /// EmitExprAsInit - Emits the code necessary to initialize a
1671  /// location in memory with the given initializer.
1672  void EmitExprAsInit(const Expr *init, const ValueDecl *D, LValue lvalue,
1673  bool capturedByInit);
1674 
1675  /// hasVolatileMember - returns true if aggregate type has a volatile
1676  /// member.
1678  if (const RecordType *RT = T->getAs<RecordType>()) {
1679  const RecordDecl *RD = cast<RecordDecl>(RT->getDecl());
1680  return RD->hasVolatileMember();
1681  }
1682  return false;
1683  }
1684  /// EmitAggregateCopy - Emit an aggregate assignment.
1685  ///
1686  /// The difference to EmitAggregateCopy is that tail padding is not copied.
1687  /// This is required for correctness when assigning non-POD structures in C++.
1688  void EmitAggregateAssign(Address DestPtr, Address SrcPtr,
1689  QualType EltTy) {
1690  bool IsVolatile = hasVolatileMember(EltTy);
1691  EmitAggregateCopy(DestPtr, SrcPtr, EltTy, IsVolatile, true);
1692  }
1693 
1694  void EmitAggregateCopyCtor(Address DestPtr, Address SrcPtr,
1695  QualType DestTy, QualType SrcTy) {
1696  EmitAggregateCopy(DestPtr, SrcPtr, SrcTy, /*IsVolatile=*/false,
1697  /*IsAssignment=*/false);
1698  }
1699 
1700  /// EmitAggregateCopy - Emit an aggregate copy.
1701  ///
1702  /// \param isVolatile - True iff either the source or the destination is
1703  /// volatile.
1704  /// \param isAssignment - If false, allow padding to be copied. This often
1705  /// yields more efficient.
1706  void EmitAggregateCopy(Address DestPtr, Address SrcPtr,
1707  QualType EltTy, bool isVolatile=false,
1708  bool isAssignment = false);
1709 
1710  /// GetAddrOfLocalVar - Return the address of a local variable.
1712  auto it = LocalDeclMap.find(VD);
1713  assert(it != LocalDeclMap.end() &&
1714  "Invalid argument to GetAddrOfLocalVar(), no decl!");
1715  return it->second;
1716  }
1717 
1718  /// getOpaqueLValueMapping - Given an opaque value expression (which
1719  /// must be mapped to an l-value), return its mapping.
1722 
1724  it = OpaqueLValues.find(e);
1725  assert(it != OpaqueLValues.end() && "no mapping for opaque value!");
1726  return it->second;
1727  }
1728 
1729  /// getOpaqueRValueMapping - Given an opaque value expression (which
1730  /// must be mapped to an r-value), return its mapping.
1733 
1735  it = OpaqueRValues.find(e);
1736  assert(it != OpaqueRValues.end() && "no mapping for opaque value!");
1737  return it->second;
1738  }
1739 
1740  /// getAccessedFieldNo - Given an encoded value and a result number, return
1741  /// the input field number being accessed.
1742  static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts);
1743 
1744  llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L);
1745  llvm::BasicBlock *GetIndirectGotoBlock();
1746 
1747  /// EmitNullInitialization - Generate code to set a value of the given type to
1748  /// null, If the type contains data member pointers, they will be initialized
1749  /// to -1 in accordance with the Itanium C++ ABI.
1750  void EmitNullInitialization(Address DestPtr, QualType Ty);
1751 
1752  /// Emits a call to an LLVM variable-argument intrinsic, either
1753  /// \c llvm.va_start or \c llvm.va_end.
1754  /// \param ArgValue A reference to the \c va_list as emitted by either
1755  /// \c EmitVAListRef or \c EmitMSVAListRef.
1756  /// \param IsStart If \c true, emits a call to \c llvm.va_start; otherwise,
1757  /// calls \c llvm.va_end.
1758  llvm::Value *EmitVAStartEnd(llvm::Value *ArgValue, bool IsStart);
1759 
1760  /// Generate code to get an argument from the passed in pointer
1761  /// and update it accordingly.
1762  /// \param VE The \c VAArgExpr for which to generate code.
1763  /// \param VAListAddr Receives a reference to the \c va_list as emitted by
1764  /// either \c EmitVAListRef or \c EmitMSVAListRef.
1765  /// \returns A pointer to the argument.
1766  // FIXME: We should be able to get rid of this method and use the va_arg
1767  // instruction in LLVM instead once it works well enough.
1768  Address EmitVAArg(VAArgExpr *VE, Address &VAListAddr);
1769 
1770  /// emitArrayLength - Compute the length of an array, even if it's a
1771  /// VLA, and drill down to the base element type.
1772  llvm::Value *emitArrayLength(const ArrayType *arrayType,
1773  QualType &baseType,
1774  Address &addr);
1775 
1776  /// EmitVLASize - Capture all the sizes for the VLA expressions in
1777  /// the given variably-modified type and store them in the VLASizeMap.
1778  ///
1779  /// This function can be called with a null (unreachable) insert point.
1781 
1782  /// getVLASize - Returns an LLVM value that corresponds to the size,
1783  /// in non-variably-sized elements, of a variable length array type,
1784  /// plus that largest non-variably-sized element type. Assumes that
1785  /// the type has already been emitted with EmitVariablyModifiedType.
1786  std::pair<llvm::Value*,QualType> getVLASize(const VariableArrayType *vla);
1787  std::pair<llvm::Value*,QualType> getVLASize(QualType vla);
1788 
1789  /// LoadCXXThis - Load the value of 'this'. This function is only valid while
1790  /// generating code for an C++ member function.
1792  assert(CXXThisValue && "no 'this' value for this function");
1793  return CXXThisValue;
1794  }
1796 
1797  /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have
1798  /// virtual bases.
1799  // FIXME: Every place that calls LoadCXXVTT is something
1800  // that needs to be abstracted properly.
1802  assert(CXXStructorImplicitParamValue && "no VTT value for this function");
1803  return CXXStructorImplicitParamValue;
1804  }
1805 
1806  /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a
1807  /// complete class to the given direct base.
1808  Address
1810  const CXXRecordDecl *Derived,
1811  const CXXRecordDecl *Base,
1812  bool BaseIsVirtual);
1813 
1814  static bool ShouldNullCheckClassCastValue(const CastExpr *Cast);
1815 
1816  /// GetAddressOfBaseClass - This function will add the necessary delta to the
1817  /// load of 'this' and returns address of the base class.
1819  const CXXRecordDecl *Derived,
1822  bool NullCheckValue, SourceLocation Loc);
1823 
1825  const CXXRecordDecl *Derived,
1828  bool NullCheckValue);
1829 
1830  /// GetVTTParameter - Return the VTT parameter that should be passed to a
1831  /// base constructor/destructor with virtual bases.
1832  /// FIXME: VTTs are Itanium ABI-specific, so the definition should move
1833  /// to ItaniumCXXABI.cpp together with all the references to VTT.
1834  llvm::Value *GetVTTParameter(GlobalDecl GD, bool ForVirtualBase,
1835  bool Delegating);
1836 
1838  CXXCtorType CtorType,
1839  const FunctionArgList &Args,
1840  SourceLocation Loc);
1841  // It's important not to confuse this and the previous function. Delegating
1842  // constructors are the C++0x feature. The constructor delegate optimization
1843  // is used to reduce duplication in the base and complete consturctors where
1844  // they are substantially the same.
1846  const FunctionArgList &Args);
1847 
1849  bool ForVirtualBase, bool Delegating,
1850  Address This, const CXXConstructExpr *E);
1851 
1852  /// Emit assumption load for all bases. Requires to be be called only on
1853  /// most-derived class and not under construction of the object.
1854  void EmitVTableAssumptionLoads(const CXXRecordDecl *ClassDecl, Address This);
1855 
1856  /// Emit assumption that vptr load == global vtable.
1857  void EmitVTableAssumptionLoad(const VPtr &vptr, Address This);
1858 
1860  Address This, Address Src,
1861  const CXXConstructExpr *E);
1862 
1864  const ConstantArrayType *ArrayTy,
1865  Address ArrayPtr,
1866  const CXXConstructExpr *E,
1867  bool ZeroInitialization = false);
1868 
1870  llvm::Value *NumElements,
1871  Address ArrayPtr,
1872  const CXXConstructExpr *E,
1873  bool ZeroInitialization = false);
1874 
1876 
1878  bool ForVirtualBase, bool Delegating,
1879  Address This);
1880 
1881  void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType,
1882  llvm::Type *ElementTy, Address NewPtr,
1883  llvm::Value *NumElements,
1884  llvm::Value *AllocSizeWithoutCookie);
1885 
1886  void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType,
1887  Address Ptr);
1888 
1889  llvm::Value *EmitLifetimeStart(uint64_t Size, llvm::Value *Addr);
1890  void EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr);
1891 
1893  void EmitCXXDeleteExpr(const CXXDeleteExpr *E);
1894 
1895  void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr,
1896  QualType DeleteTy);
1897 
1899  const Expr *Arg, bool IsDelete);
1900 
1904 
1905  /// \brief Situations in which we might emit a check for the suitability of a
1906  /// pointer or glvalue.
1908  /// Checking the operand of a load. Must be suitably sized and aligned.
1910  /// Checking the destination of a store. Must be suitably sized and aligned.
1912  /// Checking the bound value in a reference binding. Must be suitably sized
1913  /// and aligned, but is not required to refer to an object (until the
1914  /// reference is used), per core issue 453.
1916  /// Checking the object expression in a non-static data member access. Must
1917  /// be an object within its lifetime.
1919  /// Checking the 'this' pointer for a call to a non-static member function.
1920  /// Must be an object within its lifetime.
1922  /// Checking the 'this' pointer for a constructor call.
1924  /// Checking the operand of a static_cast to a derived pointer type. Must be
1925  /// null or an object within its lifetime.
1927  /// Checking the operand of a static_cast to a derived reference type. Must
1928  /// be an object within its lifetime.
1930  /// Checking the operand of a cast to a base object. Must be suitably sized
1931  /// and aligned.
1933  /// Checking the operand of a cast to a virtual base object. Must be an
1934  /// object within its lifetime.
1936  };
1937 
1938  /// \brief Whether any type-checking sanitizers are enabled. If \c false,
1939  /// calls to EmitTypeCheck can be skipped.
1940  bool sanitizePerformTypeCheck() const;
1941 
1942  /// \brief Emit a check that \p V is the address of storage of the
1943  /// appropriate size and alignment for an object of type \p Type.
1945  QualType Type, CharUnits Alignment = CharUnits::Zero(),
1946  bool SkipNullCheck = false);
1947 
1948  /// \brief Emit a check that \p Base points into an array object, which
1949  /// we can access at index \p Index. \p Accessed should be \c false if we
1950  /// this expression is used as an lvalue, for instance in "&Arr[Idx]".
1951  void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index,
1952  QualType IndexType, bool Accessed);
1953 
1955  bool isInc, bool isPre);
1957  bool isInc, bool isPre);
1958 
1959  void EmitAlignmentAssumption(llvm::Value *PtrValue, unsigned Alignment,
1960  llvm::Value *OffsetValue = nullptr) {
1961  Builder.CreateAlignmentAssumption(CGM.getDataLayout(), PtrValue, Alignment,
1962  OffsetValue);
1963  }
1964 
1965  //===--------------------------------------------------------------------===//
1966  // Declaration Emission
1967  //===--------------------------------------------------------------------===//
1968 
1969  /// EmitDecl - Emit a declaration.
1970  ///
1971  /// This function can be called with a null (unreachable) insert point.
1972  void EmitDecl(const Decl &D);
1973 
1974  /// EmitVarDecl - Emit a local variable declaration.
1975  ///
1976  /// This function can be called with a null (unreachable) insert point.
1977  void EmitVarDecl(const VarDecl &D);
1978 
1979  void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue,
1980  bool capturedByInit);
1981  void EmitScalarInit(llvm::Value *init, LValue lvalue);
1982 
1983  typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D,
1984  llvm::Value *Address);
1985 
1986  /// \brief Determine whether the given initializer is trivial in the sense
1987  /// that it requires no code to be generated.
1988  bool isTrivialInitializer(const Expr *Init);
1989 
1990  /// EmitAutoVarDecl - Emit an auto variable declaration.
1991  ///
1992  /// This function can be called with a null (unreachable) insert point.
1993  void EmitAutoVarDecl(const VarDecl &D);
1994 
1996  friend class CodeGenFunction;
1997 
1998  const VarDecl *Variable;
1999 
2000  /// The address of the alloca. Invalid if the variable was emitted
2001  /// as a global constant.
2002  Address Addr;
2003 
2004  llvm::Value *NRVOFlag;
2005 
2006  /// True if the variable is a __block variable.
2007  bool IsByRef;
2008 
2009  /// True if the variable is of aggregate type and has a constant
2010  /// initializer.
2011  bool IsConstantAggregate;
2012 
2013  /// Non-null if we should use lifetime annotations.
2014  llvm::Value *SizeForLifetimeMarkers;
2015 
2016  struct Invalid {};
2017  AutoVarEmission(Invalid) : Variable(nullptr), Addr(Address::invalid()) {}
2018 
2019  AutoVarEmission(const VarDecl &variable)
2020  : Variable(&variable), Addr(Address::invalid()), NRVOFlag(nullptr),
2021  IsByRef(false), IsConstantAggregate(false),
2022  SizeForLifetimeMarkers(nullptr) {}
2023 
2024  bool wasEmittedAsGlobal() const { return !Addr.isValid(); }
2025 
2026  public:
2027  static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); }
2028 
2029  bool useLifetimeMarkers() const {
2030  return SizeForLifetimeMarkers != nullptr;
2031  }
2033  assert(useLifetimeMarkers());
2034  return SizeForLifetimeMarkers;
2035  }
2036 
2037  /// Returns the raw, allocated address, which is not necessarily
2038  /// the address of the object itself.
2040  return Addr;
2041  }
2042 
2043  /// Returns the address of the object within this declaration.
2044  /// Note that this does not chase the forwarding pointer for
2045  /// __block decls.
2047  if (!IsByRef) return Addr;
2048 
2049  return CGF.emitBlockByrefAddress(Addr, Variable, /*forward*/ false);
2050  }
2051  };
2052  AutoVarEmission EmitAutoVarAlloca(const VarDecl &var);
2053  void EmitAutoVarInit(const AutoVarEmission &emission);
2054  void EmitAutoVarCleanups(const AutoVarEmission &emission);
2055  void emitAutoVarTypeCleanup(const AutoVarEmission &emission,
2056  QualType::DestructionKind dtorKind);
2057 
2058  void EmitStaticVarDecl(const VarDecl &D,
2059  llvm::GlobalValue::LinkageTypes Linkage);
2060 
2061  class ParamValue {
2062  llvm::Value *Value;
2063  unsigned Alignment;
2064  ParamValue(llvm::Value *V, unsigned A) : Value(V), Alignment(A) {}
2065  public:
2067  return ParamValue(value, 0);
2068  }
2070  assert(!addr.getAlignment().isZero());
2071  return ParamValue(addr.getPointer(), addr.getAlignment().getQuantity());
2072  }
2073 
2074  bool isIndirect() const { return Alignment != 0; }
2075  llvm::Value *getAnyValue() const { return Value; }
2076 
2078  assert(!isIndirect());
2079  return Value;
2080  }
2081 
2083  assert(isIndirect());
2084  return Address(Value, CharUnits::fromQuantity(Alignment));
2085  }
2086  };
2087 
2088  /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl.
2089  void EmitParmDecl(const VarDecl &D, ParamValue Arg, unsigned ArgNo);
2090 
2091  /// protectFromPeepholes - Protect a value that we're intending to
2092  /// store to the side, but which will probably be used later, from
2093  /// aggressive peepholing optimizations that might delete it.
2094  ///
2095  /// Pass the result to unprotectFromPeepholes to declare that
2096  /// protection is no longer required.
2097  ///
2098  /// There's no particular reason why this shouldn't apply to
2099  /// l-values, it's just that no existing peepholes work on pointers.
2100  PeepholeProtection protectFromPeepholes(RValue rvalue);
2101  void unprotectFromPeepholes(PeepholeProtection protection);
2102 
2103  //===--------------------------------------------------------------------===//
2104  // Statement Emission
2105  //===--------------------------------------------------------------------===//
2106 
2107  /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info.
2108  void EmitStopPoint(const Stmt *S);
2109 
2110  /// EmitStmt - Emit the code for the statement \arg S. It is legal to call
2111  /// this function even if there is no current insertion point.
2112  ///
2113  /// This function may clear the current insertion point; callers should use
2114  /// EnsureInsertPoint if they wish to subsequently generate code without first
2115  /// calling EmitBlock, EmitBranch, or EmitStmt.
2116  void EmitStmt(const Stmt *S);
2117 
2118  /// EmitSimpleStmt - Try to emit a "simple" statement which does not
2119  /// necessarily require an insertion point or debug information; typically
2120  /// because the statement amounts to a jump or a container of other
2121  /// statements.
2122  ///
2123  /// \return True if the statement was handled.
2124  bool EmitSimpleStmt(const Stmt *S);
2125 
2126  Address EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false,
2129  bool GetLast = false,
2130  AggValueSlot AVS =
2132 
2133  /// EmitLabel - Emit the block for the given label. It is legal to call this
2134  /// function even if there is no current insertion point.
2135  void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt.
2136 
2137  void EmitLabelStmt(const LabelStmt &S);
2138  void EmitAttributedStmt(const AttributedStmt &S);
2139  void EmitGotoStmt(const GotoStmt &S);
2140  void EmitIndirectGotoStmt(const IndirectGotoStmt &S);
2141  void EmitIfStmt(const IfStmt &S);
2142 
2143  void EmitWhileStmt(const WhileStmt &S,
2144  ArrayRef<const Attr *> Attrs = None);
2145  void EmitDoStmt(const DoStmt &S, ArrayRef<const Attr *> Attrs = None);
2146  void EmitForStmt(const ForStmt &S,
2147  ArrayRef<const Attr *> Attrs = None);
2148  void EmitReturnStmt(const ReturnStmt &S);
2149  void EmitDeclStmt(const DeclStmt &S);
2150  void EmitBreakStmt(const BreakStmt &S);
2151  void EmitContinueStmt(const ContinueStmt &S);
2152  void EmitSwitchStmt(const SwitchStmt &S);
2153  void EmitDefaultStmt(const DefaultStmt &S);
2154  void EmitCaseStmt(const CaseStmt &S);
2155  void EmitCaseStmtRange(const CaseStmt &S);
2156  void EmitAsmStmt(const AsmStmt &S);
2157 
2159  void EmitObjCAtTryStmt(const ObjCAtTryStmt &S);
2160  void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S);
2163 
2164  void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
2165  void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
2166 
2167  void EmitCXXTryStmt(const CXXTryStmt &S);
2168  void EmitSEHTryStmt(const SEHTryStmt &S);
2169  void EmitSEHLeaveStmt(const SEHLeaveStmt &S);
2170  void EnterSEHTryStmt(const SEHTryStmt &S);
2171  void ExitSEHTryStmt(const SEHTryStmt &S);
2172 
2173  void startOutlinedSEHHelper(CodeGenFunction &ParentCGF, bool IsFilter,
2174  const Stmt *OutlinedStmt);
2175 
2176  llvm::Function *GenerateSEHFilterFunction(CodeGenFunction &ParentCGF,
2177  const SEHExceptStmt &Except);
2178 
2179  llvm::Function *GenerateSEHFinallyFunction(CodeGenFunction &ParentCGF,
2180  const SEHFinallyStmt &Finally);
2181 
2182  void EmitSEHExceptionCodeSave(CodeGenFunction &ParentCGF,
2183  llvm::Value *ParentFP,
2184  llvm::Value *EntryEBP);
2188 
2189  /// Scan the outlined statement for captures from the parent function. For
2190  /// each capture, mark the capture as escaped and emit a call to
2191  /// llvm.localrecover. Insert the localrecover result into the LocalDeclMap.
2192  void EmitCapturedLocals(CodeGenFunction &ParentCGF, const Stmt *OutlinedStmt,
2193  bool IsFilter);
2194 
2195  /// Recovers the address of a local in a parent function. ParentVar is the
2196  /// address of the variable used in the immediate parent function. It can
2197  /// either be an alloca or a call to llvm.localrecover if there are nested
2198  /// outlined functions. ParentFP is the frame pointer of the outermost parent
2199  /// frame.
2201  Address ParentVar,
2202  llvm::Value *ParentFP);
2203 
2204  void EmitCXXForRangeStmt(const CXXForRangeStmt &S,
2205  ArrayRef<const Attr *> Attrs = None);
2206 
2208  llvm::Function *EmitCapturedStmt(const CapturedStmt &S, CapturedRegionKind K);
2209  llvm::Function *GenerateCapturedStmtFunction(const CapturedStmt &S);
2211  llvm::Function *GenerateOpenMPCapturedStmtFunction(const CapturedStmt &S);
2213  SmallVectorImpl<llvm::Value *> &CapturedVars);
2214  void emitOMPSimpleStore(LValue LVal, RValue RVal, QualType RValTy,
2215  SourceLocation Loc);
2216  /// \brief Perform element by element copying of arrays with type \a
2217  /// OriginalType from \a SrcAddr to \a DestAddr using copying procedure
2218  /// generated by \a CopyGen.
2219  ///
2220  /// \param DestAddr Address of the destination array.
2221  /// \param SrcAddr Address of the source array.
2222  /// \param OriginalType Type of destination and source arrays.
2223  /// \param CopyGen Copying procedure that copies value of single array element
2224  /// to another single array element.
2226  Address DestAddr, Address SrcAddr, QualType OriginalType,
2227  const llvm::function_ref<void(Address, Address)> &CopyGen);
2228  /// \brief Emit proper copying of data from one variable to another.
2229  ///
2230  /// \param OriginalType Original type of the copied variables.
2231  /// \param DestAddr Destination address.
2232  /// \param SrcAddr Source address.
2233  /// \param DestVD Destination variable used in \a CopyExpr (for arrays, has
2234  /// type of the base array element).
2235  /// \param SrcVD Source variable used in \a CopyExpr (for arrays, has type of
2236  /// the base array element).
2237  /// \param Copy Actual copygin expression for copying data from \a SrcVD to \a
2238  /// DestVD.
2239  void EmitOMPCopy(QualType OriginalType,
2240  Address DestAddr, Address SrcAddr,
2241  const VarDecl *DestVD, const VarDecl *SrcVD,
2242  const Expr *Copy);
2243  /// \brief Emit atomic update code for constructs: \a X = \a X \a BO \a E or
2244  /// \a X = \a E \a BO \a E.
2245  ///
2246  /// \param X Value to be updated.
2247  /// \param E Update value.
2248  /// \param BO Binary operation for update operation.
2249  /// \param IsXLHSInRHSPart true if \a X is LHS in RHS part of the update
2250  /// expression, false otherwise.
2251  /// \param AO Atomic ordering of the generated atomic instructions.
2252  /// \param CommonGen Code generator for complex expressions that cannot be
2253  /// expressed through atomicrmw instruction.
2254  /// \returns <true, OldAtomicValue> if simple 'atomicrmw' instruction was
2255  /// generated, <false, RValue::get(nullptr)> otherwise.
2256  std::pair<bool, RValue> EmitOMPAtomicSimpleUpdateExpr(
2257  LValue X, RValue E, BinaryOperatorKind BO, bool IsXLHSInRHSPart,
2258  llvm::AtomicOrdering AO, SourceLocation Loc,
2259  const llvm::function_ref<RValue(RValue)> &CommonGen);
2261  OMPPrivateScope &PrivateScope);
2263  OMPPrivateScope &PrivateScope);
2264  /// \brief Emit code for copyin clause in \a D directive. The next code is
2265  /// generated at the start of outlined functions for directives:
2266  /// \code
2267  /// threadprivate_var1 = master_threadprivate_var1;
2268  /// operator=(threadprivate_var2, master_threadprivate_var2);
2269  /// ...
2270  /// __kmpc_barrier(&loc, global_tid);
2271  /// \endcode
2272  ///
2273  /// \param D OpenMP directive possibly with 'copyin' clause(s).
2274  /// \returns true if at least one copyin variable is found, false otherwise.
2276  /// \brief Emit initial code for lastprivate variables. If some variable is
2277  /// not also firstprivate, then the default initialization is used. Otherwise
2278  /// initialization of this variable is performed by EmitOMPFirstprivateClause
2279  /// method.
2280  ///
2281  /// \param D Directive that may have 'lastprivate' directives.
2282  /// \param PrivateScope Private scope for capturing lastprivate variables for
2283  /// proper codegen in internal captured statement.
2284  ///
2285  /// \returns true if there is at least one lastprivate variable, false
2286  /// otherwise.
2288  OMPPrivateScope &PrivateScope);
2289  /// \brief Emit final copying of lastprivate values to original variables at
2290  /// the end of the worksharing or simd directive.
2291  ///
2292  /// \param D Directive that has at least one 'lastprivate' directives.
2293  /// \param IsLastIterCond Boolean condition that must be set to 'i1 true' if
2294  /// it is the last iteration of the loop code in associated directive, or to
2295  /// 'i1 false' otherwise. If this item is nullptr, no final check is required.
2297  llvm::Value *IsLastIterCond = nullptr);
2298  /// \brief Emit initial code for reduction variables. Creates reduction copies
2299  /// and initializes them with the values according to OpenMP standard.
2300  ///
2301  /// \param D Directive (possibly) with the 'reduction' clause.
2302  /// \param PrivateScope Private scope for capturing reduction variables for
2303  /// proper codegen in internal captured statement.
2304  ///
2306  OMPPrivateScope &PrivateScope);
2307  /// \brief Emit final update of reduction values to original variables at
2308  /// the end of the directive.
2309  ///
2310  /// \param D Directive that has at least one 'reduction' directives.
2312  /// \brief Emit initial code for linear variables. Creates private copies
2313  /// and initializes them with the values according to OpenMP standard.
2314  ///
2315  /// \param D Directive (possibly) with the 'linear' clause.
2317 
2319  void EmitOMPSimdDirective(const OMPSimdDirective &S);
2320  void EmitOMPForDirective(const OMPForDirective &S);
2330  void EmitOMPTaskDirective(const OMPTaskDirective &S);
2341  void
2347 
2348  /// \brief Emit inner loop of the worksharing/simd construct.
2349  ///
2350  /// \param S Directive, for which the inner loop must be emitted.
2351  /// \param RequiresCleanup true, if directive has some associated private
2352  /// variables.
2353  /// \param LoopCond Bollean condition for loop continuation.
2354  /// \param IncExpr Increment expression for loop control variable.
2355  /// \param BodyGen Generator for the inner body of the inner loop.
2356  /// \param PostIncGen Genrator for post-increment code (required for ordered
2357  /// loop directvies).
2358  void EmitOMPInnerLoop(
2359  const Stmt &S, bool RequiresCleanup, const Expr *LoopCond,
2360  const Expr *IncExpr,
2361  const llvm::function_ref<void(CodeGenFunction &)> &BodyGen,
2362  const llvm::function_ref<void(CodeGenFunction &)> &PostIncGen);
2363 
2365 
2366 private:
2367 
2368  /// Helpers for the OpenMP loop directives.
2369  void EmitOMPLoopBody(const OMPLoopDirective &D, JumpDest LoopExit);
2370  void EmitOMPSimdInit(const OMPLoopDirective &D, bool IsMonotonic = false);
2371  void EmitOMPSimdFinal(const OMPLoopDirective &D);
2372  /// \brief Emit code for the worksharing loop-based directive.
2373  /// \return true, if this construct has any lastprivate clause, false -
2374  /// otherwise.
2375  bool EmitOMPWorksharingLoop(const OMPLoopDirective &S);
2376  void EmitOMPForOuterLoop(OpenMPScheduleClauseKind ScheduleKind,
2377  bool IsMonotonic, const OMPLoopDirective &S,
2378  OMPPrivateScope &LoopScope, bool Ordered, Address LB,
2379  Address UB, Address ST, Address IL,
2380  llvm::Value *Chunk);
2381  /// \brief Emit code for sections directive.
2382  OpenMPDirectiveKind EmitSections(const OMPExecutableDirective &S);
2383 
2384 public:
2385 
2386  //===--------------------------------------------------------------------===//
2387  // LValue Expression Emission
2388  //===--------------------------------------------------------------------===//
2389 
2390  /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type.
2392 
2393  /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E
2394  /// and issue an ErrorUnsupported style diagnostic (using the
2395  /// provided Name).
2397  const char *Name);
2398 
2399  /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue
2400  /// an ErrorUnsupported style diagnostic (using the provided Name).
2402  const char *Name);
2403 
2404  /// EmitLValue - Emit code to compute a designator that specifies the location
2405  /// of the expression.
2406  ///
2407  /// This can return one of two things: a simple address or a bitfield
2408  /// reference. In either case, the LLVM Value* in the LValue structure is
2409  /// guaranteed to be an LLVM pointer type.
2410  ///
2411  /// If this returns a bitfield reference, nothing about the pointee type of
2412  /// the LLVM value is known: For example, it may not be a pointer to an
2413  /// integer.
2414  ///
2415  /// If this returns a normal address, and if the lvalue's C type is fixed
2416  /// size, this method guarantees that the returned pointer type will point to
2417  /// an LLVM type of the same size of the lvalue's type. If the lvalue has a
2418  /// variable length type, this is not possible.
2419  ///
2420  LValue EmitLValue(const Expr *E);
2421 
2422  /// \brief Same as EmitLValue but additionally we generate checking code to
2423  /// guard against undefined behavior. This is only suitable when we know
2424  /// that the address will be used to access the object.
2425  LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK);
2426 
2428  SourceLocation Loc);
2429 
2430  void EmitAtomicInit(Expr *E, LValue lvalue);
2431 
2433  bool typeIsSuitableForInlineAtomic(QualType Ty, bool IsVolatile) const;
2434 
2437 
2439  llvm::AtomicOrdering AO, bool IsVolatile = false,
2441 
2442  void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit);
2443 
2444  void EmitAtomicStore(RValue rvalue, LValue lvalue, llvm::AtomicOrdering AO,
2445  bool IsVolatile, bool isInit);
2446 
2447  std::pair<RValue, llvm::Value *> EmitAtomicCompareExchange(
2448  LValue Obj, RValue Expected, RValue Desired, SourceLocation Loc,
2449  llvm::AtomicOrdering Success = llvm::SequentiallyConsistent,
2450  llvm::AtomicOrdering Failure = llvm::SequentiallyConsistent,
2451  bool IsWeak = false, AggValueSlot Slot = AggValueSlot::ignored());
2452 
2453  void EmitAtomicUpdate(LValue LVal, llvm::AtomicOrdering AO,
2454  const llvm::function_ref<RValue(RValue)> &UpdateOp,
2455  bool IsVolatile);
2456 
2457  /// EmitToMemory - Change a scalar value from its value
2458  /// representation to its in-memory representation.
2460 
2461  /// EmitFromMemory - Change a scalar value from its memory
2462  /// representation to its value representation.
2464 
2465  /// EmitLoadOfScalar - Load a scalar value from an address, taking
2466  /// care to appropriately convert from the memory representation to
2467  /// the LLVM value representation.
2468  llvm::Value *EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty,
2469  SourceLocation Loc,
2470  AlignmentSource AlignSource =
2472  llvm::MDNode *TBAAInfo = nullptr,
2473  QualType TBAABaseTy = QualType(),
2474  uint64_t TBAAOffset = 0,
2475  bool isNontemporal = false);
2476 
2477  /// EmitLoadOfScalar - Load a scalar value from an address, taking
2478  /// care to appropriately convert from the memory representation to
2479  /// the LLVM value representation. The l-value must be a simple
2480  /// l-value.
2482 
2483  /// EmitStoreOfScalar - Store a scalar value to an address, taking
2484  /// care to appropriately convert from the memory representation to
2485  /// the LLVM value representation.
2487  bool Volatile, QualType Ty,
2488  AlignmentSource AlignSource = AlignmentSource::Type,
2489  llvm::MDNode *TBAAInfo = nullptr, bool isInit = false,
2490  QualType TBAABaseTy = QualType(),
2491  uint64_t TBAAOffset = 0, bool isNontemporal = false);
2492 
2493  /// EmitStoreOfScalar - Store a scalar value to an address, taking
2494  /// care to appropriately convert from the memory representation to
2495  /// the LLVM value representation. The l-value must be a simple
2496  /// l-value. The isInit flag indicates whether this is an initialization.
2497  /// If so, atomic qualifiers are ignored and the store is always non-atomic.
2498  void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false);
2499 
2500  /// EmitLoadOfLValue - Given an expression that represents a value lvalue,
2501  /// this method emits the address of the lvalue, then loads the result as an
2502  /// rvalue, returning the rvalue.
2507 
2508  /// EmitStoreThroughLValue - Store the specified rvalue into the specified
2509  /// lvalue, where both are guaranteed to the have the same type, and that type
2510  /// is 'Ty'.
2511  void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit = false);
2514 
2515  /// EmitStoreThroughBitfieldLValue - Store Src into Dst with same constraints
2516  /// as EmitStoreThroughLValue.
2517  ///
2518  /// \param Result [out] - If non-null, this will be set to a Value* for the
2519  /// bit-field contents after the store, appropriate for use as the result of
2520  /// an assignment to the bit-field.
2522  llvm::Value **Result=nullptr);
2523 
2524  /// Emit an l-value for an assignment (simple or compound) of complex type.
2528  llvm::Value *&Result);
2529 
2530  // Note: only available for agg return types
2533  // Note: only available for agg return types
2535  // Note: only available for agg return types
2543  bool Accessed = false);
2545  bool IsLowerBound = true);
2547  LValue EmitMemberExpr(const MemberExpr *E);
2552  LValue EmitCastLValue(const CastExpr *E);
2555 
2557 
2559 
2560  Address EmitArrayToPointerDecay(const Expr *Array,
2561  AlignmentSource *AlignSource = nullptr);
2562 
2564  llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference;
2565  ConstantEmission(llvm::Constant *C, bool isReference)
2566  : ValueAndIsReference(C, isReference) {}
2567  public:
2569  static ConstantEmission forReference(llvm::Constant *C) {
2570  return ConstantEmission(C, true);
2571  }
2572  static ConstantEmission forValue(llvm::Constant *C) {
2573  return ConstantEmission(C, false);
2574  }
2575 
2576  explicit operator bool() const {
2577  return ValueAndIsReference.getOpaqueValue() != nullptr;
2578  }
2579 
2580  bool isReference() const { return ValueAndIsReference.getInt(); }
2582  assert(isReference());
2583  return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(),
2584  refExpr->getType());
2585  }
2586 
2587  llvm::Constant *getValue() const {
2588  assert(!isReference());
2589  return ValueAndIsReference.getPointer();
2590  }
2591  };
2592 
2593  ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr);
2594 
2598 
2599  llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface,
2600  const ObjCIvarDecl *Ivar);
2603 
2604  /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that
2605  /// if the Field is a reference, this will return the address of the reference
2606  /// and not the address of the value stored in the reference.
2608  const FieldDecl* Field);
2609 
2611  llvm::Value* Base, const ObjCIvarDecl *Ivar,
2612  unsigned CVRQualifiers);
2613 
2619 
2625  void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init);
2626 
2627  //===--------------------------------------------------------------------===//
2628  // Scalar Expression Emission
2629  //===--------------------------------------------------------------------===//
2630 
2631  /// EmitCall - Generate a call of the given function, expecting the given
2632  /// result type, and using the given argument list which specifies both the
2633  /// LLVM arguments and the types they were derived from.
2634  RValue EmitCall(const CGFunctionInfo &FnInfo, llvm::Value *Callee,
2636  CGCalleeInfo CalleeInfo = CGCalleeInfo(),
2637  llvm::Instruction **callOrInvoke = nullptr);
2638 
2639  RValue EmitCall(QualType FnType, llvm::Value *Callee, const CallExpr *E,
2640  ReturnValueSlot ReturnValue,
2641  CGCalleeInfo CalleeInfo = CGCalleeInfo(),
2642  llvm::Value *Chain = nullptr);
2643  RValue EmitCallExpr(const CallExpr *E,
2644  ReturnValueSlot ReturnValue = ReturnValueSlot());
2645 
2646  void checkTargetFeatures(const CallExpr *E, const FunctionDecl *TargetDecl);
2647 
2648  llvm::CallInst *EmitRuntimeCall(llvm::Value *callee,
2649  const Twine &name = "");
2650  llvm::CallInst *EmitRuntimeCall(llvm::Value *callee,
2652  const Twine &name = "");
2653  llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee,
2654  const Twine &name = "");
2655  llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee,
2657  const Twine &name = "");
2658 
2659  llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee,
2661  const Twine &Name = "");
2662  llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee,
2664  const Twine &name = "");
2665  llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee,
2666  const Twine &name = "");
2668  ArrayRef<llvm::Value*> args);
2669 
2671  NestedNameSpecifier *Qual,
2672  llvm::Type *Ty);
2673 
2675  CXXDtorType Type,
2676  const CXXRecordDecl *RD);
2677 
2678  RValue
2680  ReturnValueSlot ReturnValue, llvm::Value *This,
2681  llvm::Value *ImplicitParam,
2682  QualType ImplicitParamTy, const CallExpr *E);
2684  ReturnValueSlot ReturnValue, llvm::Value *This,
2685  llvm::Value *ImplicitParam,
2686  QualType ImplicitParamTy, const CallExpr *E,
2687  StructorType Type);
2689  ReturnValueSlot ReturnValue);
2691  const CXXMethodDecl *MD,
2692  ReturnValueSlot ReturnValue,
2693  bool HasQualifier,
2694  NestedNameSpecifier *Qualifier,
2695  bool IsArrow, const Expr *Base);
2696  // Compute the object pointer.
2698  llvm::Value *memberPtr,
2699  const MemberPointerType *memberPtrType,
2700  AlignmentSource *AlignSource = nullptr);
2702  ReturnValueSlot ReturnValue);
2703 
2705  const CXXMethodDecl *MD,
2706  ReturnValueSlot ReturnValue);
2707 
2709  ReturnValueSlot ReturnValue);
2710 
2711 
2713  unsigned BuiltinID, const CallExpr *E,
2714  ReturnValueSlot ReturnValue);
2715 
2716  RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue);
2717 
2718  /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call
2719  /// is unhandled by the current target.
2720  llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2721 
2723  const llvm::CmpInst::Predicate Fp,
2724  const llvm::CmpInst::Predicate Ip,
2725  const llvm::Twine &Name = "");
2726  llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2727 
2728  llvm::Value *EmitCommonNeonBuiltinExpr(unsigned BuiltinID,
2729  unsigned LLVMIntrinsic,
2730  unsigned AltLLVMIntrinsic,
2731  const char *NameHint,
2732  unsigned Modifier,
2733  const CallExpr *E,
2735  Address PtrOp0, Address PtrOp1);
2736  llvm::Function *LookupNeonLLVMIntrinsic(unsigned IntrinsicID,
2737  unsigned Modifier, llvm::Type *ArgTy,
2738  const CallExpr *E);
2739  llvm::Value *EmitNeonCall(llvm::Function *F,
2741  const char *name,
2742  unsigned shift = 0, bool rightshift = false);
2743  llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx);
2745  bool negateForRightShift);
2747  llvm::Type *Ty, bool usgn, const char *name);
2749  llvm::Value *EmitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2750 
2752  llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2753  llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2754  llvm::Value *EmitAMDGPUBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2755  llvm::Value *EmitSystemZBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2756  llvm::Value *EmitNVPTXBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
2757  llvm::Value *EmitWebAssemblyBuiltinExpr(unsigned BuiltinID,
2758  const CallExpr *E);
2759 
2766  const ObjCMethodDecl *MethodWithObjects);
2769  ReturnValueSlot Return = ReturnValueSlot());
2770 
2771  /// Retrieves the default cleanup kind for an ARC cleanup.
2772  /// Except under -fobjc-arc-eh, ARC cleanups are normal-only.
2774  return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions
2776  }
2777 
2778  // ARC primitives.
2779  void EmitARCInitWeak(Address addr, llvm::Value *value);
2780  void EmitARCDestroyWeak(Address addr);
2783  llvm::Value *EmitARCStoreWeak(Address addr, llvm::Value *value, bool ignored);
2784  void EmitARCCopyWeak(Address dst, Address src);
2785  void EmitARCMoveWeak(Address dst, Address src);
2789  bool resultIgnored);
2791  bool resultIgnored);
2794  llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory);
2796  void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise);
2801 
2802  std::pair<LValue,llvm::Value*>
2804  std::pair<LValue,llvm::Value*>
2805  EmitARCStoreStrong(const BinaryOperator *e, bool ignored);
2806 
2810 
2814 
2816 
2820 
2826 
2827  /// \brief Emits a reference binding to the passed in expression.
2829 
2830  //===--------------------------------------------------------------------===//
2831  // Expression Emission
2832  //===--------------------------------------------------------------------===//
2833 
2834  // Expressions are broken into three classes: scalar, complex, aggregate.
2835 
2836  /// EmitScalarExpr - Emit the computation of the specified expression of LLVM
2837  /// scalar type, returning the result.
2838  llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false);
2839 
2840  /// Emit a conversion from the specified type to the specified destination
2841  /// type, both of which are LLVM scalar types.
2843  QualType DstTy, SourceLocation Loc);
2844 
2845  /// Emit a conversion from the specified complex type to the specified
2846  /// destination type, where the destination type is an LLVM scalar type.
2848  QualType DstTy,
2849  SourceLocation Loc);
2850 
2851  /// EmitAggExpr - Emit the computation of the specified expression
2852  /// of aggregate type. The result is computed into the given slot,
2853  /// which may be null to indicate that the value is not needed.
2854  void EmitAggExpr(const Expr *E, AggValueSlot AS);
2855 
2856  /// EmitAggExprToLValue - Emit the computation of the specified expression of
2857  /// aggregate type into a temporary LValue.
2858  LValue EmitAggExprToLValue(const Expr *E);
2859 
2860  /// EmitExtendGCLifetime - Given a pointer to an Objective-C object,
2861  /// make sure it survives garbage collection until this point.
2862  void EmitExtendGCLifetime(llvm::Value *object);
2863 
2864  /// EmitComplexExpr - Emit the computation of the specified expression of
2865  /// complex type, returning the result.
2867  bool IgnoreReal = false,
2868  bool IgnoreImag = false);
2869 
2870  /// EmitComplexExprIntoLValue - Emit the given expression of complex
2871  /// type and place its result into the specified l-value.
2872  void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit);
2873 
2874  /// EmitStoreOfComplex - Store a complex number into the specified l-value.
2875  void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit);
2876 
2877  /// EmitLoadOfComplex - Load a complex number from the specified l-value.
2879 
2880  Address emitAddrOfRealComponent(Address complex, QualType complexType);
2881  Address emitAddrOfImagComponent(Address complex, QualType complexType);
2882 
2883  /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the
2884  /// global variable that has already been created for it. If the initializer
2885  /// has a different type than GV does, this may free GV and return a different
2886  /// one. Otherwise it just returns GV.
2887  llvm::GlobalVariable *
2889  llvm::GlobalVariable *GV);
2890 
2891 
2892  /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++
2893  /// variable with global storage.
2894  void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr,
2895  bool PerformInit);
2896 
2897  llvm::Constant *createAtExitStub(const VarDecl &VD, llvm::Constant *Dtor,
2898  llvm::Constant *Addr);
2899 
2900  /// Call atexit() with a function that passes the given argument to
2901  /// the given function.
2902  void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::Constant *fn,
2903  llvm::Constant *addr);
2904 
2905  /// Emit code in this function to perform a guarded variable
2906  /// initialization. Guarded initializations are used when it's not
2907  /// possible to prove that an initialization will be done exactly
2908  /// once, e.g. with a static local variable or a static data member
2909  /// of a class template.
2910  void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr,
2911  bool PerformInit);
2912 
2913  /// GenerateCXXGlobalInitFunc - Generates code for initializing global
2914  /// variables.
2915  void GenerateCXXGlobalInitFunc(llvm::Function *Fn,
2916  ArrayRef<llvm::Function *> CXXThreadLocals,
2917  Address Guard = Address::invalid());
2918 
2919  /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global
2920  /// variables.
2921  void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn,
2922  const std::vector<std::pair<llvm::WeakVH,
2923  llvm::Constant*> > &DtorsAndObjects);
2924 
2925  void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn,
2926  const VarDecl *D,
2927  llvm::GlobalVariable *Addr,
2928  bool PerformInit);
2929 
2930  void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest);
2931 
2932  void EmitSynthesizedCXXCopyCtor(Address Dest, Address Src, const Expr *Exp);
2933 
2935  if (E->getNumObjects() == 0) return;
2937  }
2939 
2940  void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint = true);
2941 
2942  void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest);
2943 
2945 
2946  //===--------------------------------------------------------------------===//
2947  // Annotations Emission
2948  //===--------------------------------------------------------------------===//
2949 
2950  /// Emit an annotation call (intrinsic or builtin).
2952  llvm::Value *AnnotatedVal,
2953  StringRef AnnotationStr,
2954  SourceLocation Location);
2955 
2956  /// Emit local annotations for the local variable V, declared by D.
2957  void EmitVarAnnotations(const VarDecl *D, llvm::Value *V);
2958 
2959  /// Emit field annotations for the given field & value. Returns the
2960  /// annotation result.
2962 
2963  //===--------------------------------------------------------------------===//
2964  // Internal Helpers
2965  //===--------------------------------------------------------------------===//
2966 
2967  /// ContainsLabel - Return true if the statement contains a label in it. If
2968  /// this statement is not executed normally, it not containing a label means
2969  /// that we can just remove the code.
2970  static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false);
2971 
2972  /// containsBreak - Return true if the statement contains a break out of it.
2973  /// If the statement (recursively) contains a switch or loop with a break
2974  /// inside of it, this is fine.
2975  static bool containsBreak(const Stmt *S);
2976 
2977  /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
2978  /// to a constant, or if it does but contains a label, return false. If it
2979  /// constant folds return true and set the boolean result in Result.
2980  bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result);
2981 
2982  /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
2983  /// to a constant, or if it does but contains a label, return false. If it
2984  /// constant folds return true and set the folded value.
2985  bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result);
2986 
2987  /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an
2988  /// if statement) to the specified blocks. Based on the condition, this might
2989  /// try to simplify the codegen of the conditional based on the branch.
2990  /// TrueCount should be the number of times we expect the condition to
2991  /// evaluate to true based on PGO data.
2992  void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock,
2993  llvm::BasicBlock *FalseBlock, uint64_t TrueCount);
2994 
2995  /// \brief Emit a description of a type in a format suitable for passing to
2996  /// a runtime sanitizer handler.
2997  llvm::Constant *EmitCheckTypeDescriptor(QualType T);
2998 
2999  /// \brief Convert a value into a format suitable for passing to a runtime
3000  /// sanitizer handler.
3002 
3003  /// \brief Emit a description of a source location in a format suitable for
3004  /// passing to a runtime sanitizer handler.
3005  llvm::Constant *EmitCheckSourceLocation(SourceLocation Loc);
3006 
3007  /// \brief Create a basic block that will call a handler function in a
3008  /// sanitizer runtime with the provided arguments, and create a conditional
3009  /// branch to it.
3010  void EmitCheck(ArrayRef<std::pair<llvm::Value *, SanitizerMask>> Checked,
3011  StringRef CheckName, ArrayRef<llvm::Constant *> StaticArgs,
3012  ArrayRef<llvm::Value *> DynamicArgs);
3013 
3014  /// \brief Emit a slow path cross-DSO CFI check which calls __cfi_slowpath
3015  /// if Cond if false.
3016  void EmitCfiSlowPathCheck(llvm::Value *Cond, llvm::ConstantInt *TypeId,
3017  llvm::Value *Ptr);
3018 
3019  /// \brief Create a basic block that will call the trap intrinsic, and emit a
3020  /// conditional branch to it, for the -ftrapv checks.
3021  void EmitTrapCheck(llvm::Value *Checked);
3022 
3023  /// \brief Emit a call to trap or debugtrap and attach function attribute
3024  /// "trap-func-name" if specified.
3025  llvm::CallInst *EmitTrapCall(llvm::Intrinsic::ID IntrID);
3026 
3027  /// \brief Create a check for a function parameter that may potentially be
3028  /// declared as non-null.
3029  void EmitNonNullArgCheck(RValue RV, QualType ArgType, SourceLocation ArgLoc,
3030  const FunctionDecl *FD, unsigned ParmNum);
3031 
3032  /// EmitCallArg - Emit a single call argument.
3033  void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType);
3034 
3035  /// EmitDelegateCallArg - We are performing a delegate call; that
3036  /// is, the current function is delegating to another one. Produce
3037  /// a r-value suitable for passing the given parameter.
3038  void EmitDelegateCallArg(CallArgList &args, const VarDecl *param,
3039  SourceLocation loc);
3040 
3041  /// SetFPAccuracy - Set the minimum required accuracy of the given floating
3042  /// point operation, expressed as the maximum relative error in ulp.
3043  void SetFPAccuracy(llvm::Value *Val, float Accuracy);
3044 
3045 private:
3046  llvm::MDNode *getRangeForLoadFromType(QualType Ty);
3047  void EmitReturnOfRValue(RValue RV, QualType Ty);
3048 
3049  void deferPlaceholderReplacement(llvm::Instruction *Old, llvm::Value *New);
3050 
3052  DeferredReplacements;
3053 
3054  /// Set the address of a local variable.
3055  void setAddrOfLocalVar(const VarDecl *VD, Address Addr) {
3056  assert(!LocalDeclMap.count(VD) && "Decl already exists in LocalDeclMap!");
3057  LocalDeclMap.insert({VD, Addr});
3058  }
3059 
3060  /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty
3061  /// from function arguments into \arg Dst. See ABIArgInfo::Expand.
3062  ///
3063  /// \param AI - The first function argument of the expansion.
3064  void ExpandTypeFromArgs(QualType Ty, LValue Dst,
3066 
3067  /// ExpandTypeToArgs - Expand an RValue \arg RV, with the LLVM type for \arg
3068  /// Ty, into individual arguments on the provided vector \arg IRCallArgs,
3069  /// starting at index \arg IRCallArgPos. See ABIArgInfo::Expand.
3070  void ExpandTypeToArgs(QualType Ty, RValue RV, llvm::FunctionType *IRFuncTy,
3071  SmallVectorImpl<llvm::Value *> &IRCallArgs,
3072  unsigned &IRCallArgPos);
3073 
3074  llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info,
3075  const Expr *InputExpr, std::string &ConstraintStr);
3076 
3077  llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info,
3078  LValue InputValue, QualType InputType,
3079  std::string &ConstraintStr,
3080  SourceLocation Loc);
3081 
3082  /// \brief Attempts to statically evaluate the object size of E. If that
3083  /// fails, emits code to figure the size of E out for us. This is
3084  /// pass_object_size aware.
3085  llvm::Value *evaluateOrEmitBuiltinObjectSize(const Expr *E, unsigned Type,
3086  llvm::IntegerType *ResType);
3087 
3088  /// \brief Emits the size of E, as required by __builtin_object_size. This
3089  /// function is aware of pass_object_size parameters, and will act accordingly
3090  /// if E is a parameter with the pass_object_size attribute.
3091  llvm::Value *emitBuiltinObjectSize(const Expr *E, unsigned Type,
3092  llvm::IntegerType *ResType);
3093 
3094 public:
3095 #ifndef NDEBUG
3096  // Determine whether the given argument is an Objective-C method
3097  // that may have type parameters in its signature.
3098  static bool isObjCMethodWithTypeParams(const ObjCMethodDecl *method) {
3099  const DeclContext *dc = method->getDeclContext();
3100  if (const ObjCInterfaceDecl *classDecl= dyn_cast<ObjCInterfaceDecl>(dc)) {
3101  return classDecl->getTypeParamListAsWritten();
3102  }
3103 
3104  if (const ObjCCategoryDecl *catDecl = dyn_cast<ObjCCategoryDecl>(dc)) {
3105  return catDecl->getTypeParamList();
3106  }
3107 
3108  return false;
3109  }
3110 
3111  template<typename T>
3112  static bool isObjCMethodWithTypeParams(const T *) { return false; }
3113 #endif
3114 
3115  /// EmitCallArgs - Emit call arguments for a function.
3116  template <typename T>
3117  void EmitCallArgs(CallArgList &Args, const T *CallArgTypeInfo,
3118  llvm::iterator_range<CallExpr::const_arg_iterator> ArgRange,
3119  const FunctionDecl *CalleeDecl = nullptr,
3120  unsigned ParamsToSkip = 0) {
3121  SmallVector<QualType, 16> ArgTypes;
3122  CallExpr::const_arg_iterator Arg = ArgRange.begin();
3123 
3124  assert((ParamsToSkip == 0 || CallArgTypeInfo) &&
3125  "Can't skip parameters if type info is not provided");
3126  if (CallArgTypeInfo) {
3127 #ifndef NDEBUG
3128  bool isGenericMethod = isObjCMethodWithTypeParams(CallArgTypeInfo);
3129 #endif
3130 
3131  // First, use the argument types that the type info knows about
3132  for (auto I = CallArgTypeInfo->param_type_begin() + ParamsToSkip,
3133  E = CallArgTypeInfo->param_type_end();
3134  I != E; ++I, ++Arg) {
3135  assert(Arg != ArgRange.end() && "Running over edge of argument list!");
3136  assert((isGenericMethod ||
3137  ((*I)->isVariablyModifiedType() ||
3138  (*I).getNonReferenceType()->isObjCRetainableType() ||
3139  getContext()
3140  .getCanonicalType((*I).getNonReferenceType())
3141  .getTypePtr() ==
3142  getContext()
3143  .getCanonicalType((*Arg)->getType())
3144  .getTypePtr())) &&
3145  "type mismatch in call argument!");
3146  ArgTypes.push_back(*I);
3147  }
3148  }
3149 
3150  // Either we've emitted all the call args, or we have a call to variadic
3151  // function.
3152  assert((Arg == ArgRange.end() || !CallArgTypeInfo ||
3153  CallArgTypeInfo->isVariadic()) &&
3154  "Extra arguments in non-variadic function!");
3155 
3156  // If we still have any arguments, emit them using the type of the argument.
3157  for (auto *A : llvm::make_range(Arg, ArgRange.end()))
3158  ArgTypes.push_back(getVarArgType(A));
3159 
3160  EmitCallArgs(Args, ArgTypes, ArgRange, CalleeDecl, ParamsToSkip);
3161  }
3162 
3163  void EmitCallArgs(CallArgList &Args, ArrayRef<QualType> ArgTypes,
3164  llvm::iterator_range<CallExpr::const_arg_iterator> ArgRange,
3165  const FunctionDecl *CalleeDecl = nullptr,
3166  unsigned ParamsToSkip = 0);
3167 
3168  /// EmitPointerWithAlignment - Given an expression with a pointer
3169  /// type, emit the value and compute our best estimate of the
3170  /// alignment of the pointee.
3171  ///
3172  /// Note that this function will conservatively fall back on the type
3173  /// when it doesn't
3174  ///
3175  /// \param Source - If non-null, this will be initialized with
3176  /// information about the source of the alignment. Note that this
3177  /// function will conservatively fall back on the type when it
3178  /// doesn't recognize the expression, which means that sometimes
3179  ///
3180  /// a worst-case One
3181  /// reasonable way to use this information is when there's a
3182  /// language guarantee that the pointer must be aligned to some
3183  /// stricter value, and we're simply trying to ensure that
3184  /// sufficiently obvious uses of under-aligned objects don't get
3185  /// miscompiled; for example, a placement new into the address of
3186  /// a local variable. In such a case, it's quite reasonable to
3187  /// just ignore the returned alignment when it isn't from an
3188  /// explicit source.
3190  AlignmentSource *Source = nullptr);
3191 
3192 private:
3193  QualType getVarArgType(const Expr *Arg);
3194 
3195  const TargetCodeGenInfo &getTargetHooks() const {
3196  return CGM.getTargetCodeGenInfo();
3197  }
3198 
3199  void EmitDeclMetadata();
3200 
3201  BlockByrefHelpers *buildByrefHelpers(llvm::StructType &byrefType,
3202  const AutoVarEmission &emission);
3203 
3204  void AddObjCARCExceptionMetadata(llvm::Instruction *Inst);
3205 
3206  llvm::Value *GetValueForARMHint(unsigned BuiltinID);
3207 };
3208 
3209 /// Helper class with most of the code for saving a value for a
3210 /// conditional expression cleanup.
3212  typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type;
3213 
3214  /// Answer whether the given value needs extra work to be saved.
3215  static bool needsSaving(llvm::Value *value) {
3216  // If it's not an instruction, we don't need to save.
3217  if (!isa<llvm::Instruction>(value)) return false;
3218 
3219  // If it's an instruction in the entry block, we don't need to save.
3220  llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent();
3221  return (block != &block->getParent()->getEntryBlock());
3222  }
3223 
3224  /// Try to save the given value.
3226  if (!needsSaving(value)) return saved_type(value, false);
3227 
3228  // Otherwise, we need an alloca.
3229  auto align = CharUnits::fromQuantity(
3230  CGF.CGM.getDataLayout().getPrefTypeAlignment(value->getType()));
3231  Address alloca =
3232  CGF.CreateTempAlloca(value->getType(), align, "cond-cleanup.save");
3233  CGF.Builder.CreateStore(value, alloca);
3234 
3235  return saved_type(alloca.getPointer(), true);
3236  }
3237 
3239  // If the value says it wasn't saved, trust that it's still dominating.
3240  if (!value.getInt()) return value.getPointer();
3241 
3242  // Otherwise, it should be an alloca instruction, as set up in save().
3243  auto alloca = cast<llvm::AllocaInst>(value.getPointer());
3244  return CGF.Builder.CreateAlignedLoad(alloca, alloca->getAlignment());
3245  }
3246 };
3247 
3248 /// A partial specialization of DominatingValue for llvm::Values that
3249 /// might be llvm::Instructions.
3250 template <class T> struct DominatingPointer<T,true> : DominatingLLVMValue {
3251  typedef T *type;
3252  static type restore(CodeGenFunction &CGF, saved_type value) {
3253  return static_cast<T*>(DominatingLLVMValue::restore(CGF, value));
3254  }
3255 };
3256 
3257 /// A specialization of DominatingValue for Address.
3258 template <> struct DominatingValue<Address> {
3259  typedef Address type;
3260 
3261  struct saved_type {
3264  };
3265 
3266  static bool needsSaving(type value) {
3268  }
3269  static saved_type save(CodeGenFunction &CGF, type value) {
3270  return { DominatingLLVMValue::save(CGF, value.getPointer()),
3271  value.getAlignment() };
3272  }
3273  static type restore(CodeGenFunction &CGF, saved_type value) {
3274  return Address(DominatingLLVMValue::restore(CGF, value.SavedValue),
3275  value.Alignment);
3276  }
3277 };
3278 
3279 /// A specialization of DominatingValue for RValue.
3280 template <> struct DominatingValue<RValue> {
3281  typedef RValue type;
3282  class saved_type {
3283  enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral,
3284  AggregateAddress, ComplexAddress };
3285 
3286  llvm::Value *Value;
3287  unsigned K : 3;
3288  unsigned Align : 29;
3289  saved_type(llvm::Value *v, Kind k, unsigned a = 0)
3290  : Value(v), K(k), Align(a) {}
3291 
3292  public:
3293  static bool needsSaving(RValue value);
3294  static saved_type save(CodeGenFunction &CGF, RValue value);
3295  RValue restore(CodeGenFunction &CGF);
3296 
3297  // implementations in CGCleanup.cpp
3298  };
3299 
3300  static bool needsSaving(type value) {
3301  return saved_type::needsSaving(value);
3302  }
3303  static saved_type save(CodeGenFunction &CGF, type value) {
3304  return saved_type::save(CGF, value);
3305  }
3306  static type restore(CodeGenFunction &CGF, saved_type value) {
3307  return value.restore(CGF);
3308  }
3309 };
3310 
3311 } // end namespace CodeGen
3312 } // end namespace clang
3313 
3314 #endif
void enterNonTrivialFullExpression(const ExprWithCleanups *E)
Enter a full-expression with a non-trivial number of objects to clean up.
Definition: CGBlocks.cpp:632
A call to an overloaded operator written using operator syntax.
Definition: ExprCXX.h:54
void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init, ArrayRef< VarDecl * > ArrayIndexes)
Definition: CGClass.cpp:752
ReturnValueSlot - Contains the address where the return value of a function can be stored...
Definition: CGCall.h:151
void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type)
EnterDtorCleanups - Enter the cleanups necessary to complete the given phase of destruction for a des...
Definition: CGClass.cpp:1809
Information about the layout of a __block variable.
Definition: CGBlocks.h:144
void EmitIndirectGotoStmt(const IndirectGotoStmt &S)
Definition: CGStmt.cpp:519
This represents '#pragma omp master' directive.
Definition: StmtOpenMP.h:1100
SourceLocation getEnd() const
virtual void EmitBody(CodeGenFunction &CGF, const Stmt *S)
Emit the captured statement body.
Address EmitLoadOfReference(Address Ref, const ReferenceType *RefTy, AlignmentSource *Source=nullptr)
Definition: CGExpr.cpp:1934
This represents '#pragma omp task' directive.
Definition: StmtOpenMP.h:1440
llvm::Constant * GenerateCopyHelperFunction(const CGBlockInfo &blockInfo)
Generate the copy-helper function for a block closure object: static void block_copy_helper(block_t *...
Definition: CGBlocks.cpp:1321
FunctionDecl - An instance of this class is created to represent a function declaration or definition...
Definition: Decl.h:1483
llvm::Value * EmitARCStoreStrong(LValue lvalue, llvm::Value *value, bool resultIgnored)
Store into a strong object.
Definition: CGObjC.cpp:2108
void GenerateCXXGlobalInitFunc(llvm::Function *Fn, ArrayRef< llvm::Function * > CXXThreadLocals, Address Guard=Address::invalid())
GenerateCXXGlobalInitFunc - Generates code for initializing global variables.
Definition: CGDeclCXX.cpp:504
const internal::VariadicDynCastAllOfMatcher< Stmt, Expr > expr
Matches expressions.
Definition: ASTMatchers.h:1192
LValue MakeNaturalAlignPointeeAddrLValue(llvm::Value *V, QualType T)
Given a value of type T* that may not be to a complete object, construct an l-value with the natural ...
void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, llvm::Instruction *DominatingIP)
ActivateCleanupBlock - Activates an initially-inactive cleanup.
Definition: CGCleanup.cpp:1164
void EmitCallArgs(CallArgList &Args, const T *CallArgTypeInfo, llvm::iterator_range< CallExpr::const_arg_iterator > ArgRange, const FunctionDecl *CalleeDecl=nullptr, unsigned ParamsToSkip=0)
EmitCallArgs - Emit call arguments for a function.
void EmitOMPTaskwaitDirective(const OMPTaskwaitDirective &S)
llvm::Value * EmitAArch64CompareBuiltinExpr(llvm::Value *Op, llvm::Type *Ty, const llvm::CmpInst::Predicate Fp, const llvm::CmpInst::Predicate Ip, const llvm::Twine &Name="")
Definition: CGBuiltin.cpp:3355
void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, CXXCtorType CtorType, const FunctionArgList &Args, SourceLocation Loc)
Definition: CGClass.cpp:2185
LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E)
void EmitStaticVarDecl(const VarDecl &D, llvm::GlobalValue::LinkageTypes Linkage)
Definition: CGDecl.cpp:343
llvm::Value * EmitARCRetainAutoreleaseScalarExpr(const Expr *expr)
Definition: CGObjC.cpp:2759
Destroyer * getDestroyer(QualType::DestructionKind destructionKind)
Definition: CGDecl.cpp:1420
A (possibly-)qualified type.
Definition: Type.h:575
void EmitVTablePtrCheckForCall(const CXXMethodDecl *MD, llvm::Value *VTable, CFITypeCheckKind TCK, SourceLocation Loc)
EmitVTablePtrCheckForCall - Virtual method MD is being called via VTable.
Definition: CGClass.cpp:2490
void EmitSEHLeaveStmt(const SEHLeaveStmt &S)
void EmitExtendGCLifetime(llvm::Value *object)
EmitExtendGCLifetime - Given a pointer to an Objective-C object, make sure it survives garbage collec...
Definition: CGObjC.cpp:2879
void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, FunctionArgList &Args)
EmitCtorPrologue - This routine generates necessary code to initialize base classes and non-static da...
Definition: CGClass.cpp:1356
void EmitOMPReductionClauseFinal(const OMPExecutableDirective &D)
Emit final update of reduction values to original variables at the end of the directive.
llvm::Type * ConvertTypeForMem(QualType T)
void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, llvm::BasicBlock *FalseBlock, uint64_t TrueCount)
EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g.
void EmitVarDecl(const VarDecl &D)
EmitVarDecl - Emit a local variable declaration.
Definition: CGDecl.cpp:131
llvm::Value * EmitARCExtendBlockObject(const Expr *expr)
Definition: CGObjC.cpp:2776
void EmitGotoStmt(const GotoStmt &S)
Definition: CGStmt.cpp:508
LValue EmitStmtExprLValue(const StmtExpr *E)
Definition: CGExpr.cpp:3764
Address getAllocatedAddress() const
Returns the raw, allocated address, which is not necessarily the address of the object itself...
void EmitAttributedStmt(const AttributedStmt &S)
Definition: CGStmt.cpp:488
llvm::Constant * EmitCheckTypeDescriptor(QualType T)
Emit a description of a type in a format suitable for passing to a runtime sanitizer handler...
Definition: CGExpr.cpp:2271
AlignmentSource
The source of the alignment of an l-value; an expression of confidence in the alignment actually matc...
Definition: CGValue.h:125
void EmitOMPDistributeDirective(const OMPDistributeDirective &S)
llvm::Value * EmitNVPTXBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:7197
llvm::LLVMContext & getLLVMContext()
void EmitFunctionInstrumentation(const char *Fn)
EmitFunctionInstrumentation - Emit LLVM code to call the specified instrumentation function with the ...
LValue EmitObjCIsaExpr(const ObjCIsaExpr *E)
void EmitARCDestroyWeak(Address addr)
void @objc_destroyWeak(i8** addr) Essentially objc_storeWeak(addr, nil).
Definition: CGObjC.cpp:2244
LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E)
Definition: CGExpr.cpp:350
void EmitOMPAggregateAssign(Address DestAddr, Address SrcAddr, QualType OriginalType, const llvm::function_ref< void(Address, Address)> &CopyGen)
Perform element by element copying of arrays with type OriginalType from SrcAddr to DestAddr using co...
void EmitCXXTryStmt(const CXXTryStmt &S)
FieldConstructionScope(CodeGenFunction &CGF, Address This)
bool isInConditionalBranch() const
isInConditionalBranch - Return true if we're currently emitting one branch or the other of a conditio...
void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType, llvm::Type *ElementTy, Address NewPtr, llvm::Value *NumElements, llvm::Value *AllocSizeWithoutCookie)
Definition: CGExprCXX.cpp:826
const TargetInfo & getTarget() const
IfStmt - This represents an if/then/else.
Definition: Stmt.h:869
void EmitStoreThroughGlobalRegLValue(RValue Src, LValue Dst)
Store of global named registers are always calls to intrinsics.
Definition: CGExpr.cpp:1796
Address GetAddressOfDirectBaseInCompleteClass(Address Value, const CXXRecordDecl *Derived, const CXXRecordDecl *Base, bool BaseIsVirtual)
GetAddressOfBaseOfCompleteClass - Convert the given pointer to a complete class to the given direct b...
Definition: CGClass.cpp:196
void EmitNonNullArgCheck(RValue RV, QualType ArgType, SourceLocation ArgLoc, const FunctionDecl *FD, unsigned ParmNum)
Create a check for a function parameter that may potentially be declared as non-null.
Definition: CGCall.cpp:2804
llvm::AllocaInst * CreateTempAlloca(llvm::Type *Ty, const Twine &Name="tmp")
CreateTempAlloca - This creates a alloca and inserts it into the entry block.
Definition: CGExpr.cpp:66
C Language Family Type Representation.
Address GetAddressOfDerivedClass(Address Value, const CXXRecordDecl *Derived, CastExpr::path_const_iterator PathBegin, CastExpr::path_const_iterator PathEnd, bool NullCheckValue)
Definition: CGClass.cpp:367
OpaqueValueMapping(CodeGenFunction &CGF, const AbstractConditionalOperator *op)
Build the opaque value mapping for the given conditional operator if it's the GNU ...
This represents '#pragma omp for simd' directive.
Definition: StmtOpenMP.h:850
Checking the 'this' pointer for a constructor call.
QuantityType getQuantity() const
getQuantity - Get the raw integer representation of this quantity.
Definition: CharUnits.h:171
Address EmitVAArg(VAArgExpr *VE, Address &VAListAddr)
Generate code to get an argument from the passed in pointer and update it accordingly.
Definition: CGCall.cpp:3679
void emitAutoVarTypeCleanup(const AutoVarEmission &emission, QualType::DestructionKind dtorKind)
Enter a destroy cleanup for the given local variable.
Definition: CGDecl.cpp:1313
RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e, AggValueSlot slot=AggValueSlot::ignored())
Definition: CGExpr.cpp:4040
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:77
const Decl * CurCodeDecl
CurCodeDecl - This is the inner-most code context, which includes blocks.
static saved_type save(CodeGenFunction &CGF, llvm::Value *value)
Try to save the given value.
static bool classof(const CGCapturedStmtInfo *)
Represents an attribute applied to a statement.
Definition: Stmt.h:818
void EmitAutoVarDecl(const VarDecl &D)
EmitAutoVarDecl - Emit an auto variable declaration.
Definition: CGDecl.cpp:904
const llvm::DataLayout & getDataLayout() const
void EmitOMPOrderedDirective(const OMPOrderedDirective &S)
static Destroyer destroyARCStrongPrecise
llvm::Value * LoadCXXThis()
LoadCXXThis - Load the value of 'this'.
The base class of the type hierarchy.
Definition: Type.h:1249
void pushLifetimeExtendedDestroy(CleanupKind kind, Address addr, QualType type, Destroyer *destroyer, bool useEHCleanupForArray)
Definition: CGDecl.cpp:1465
LValue EmitBinaryOperatorLValue(const BinaryOperator *E)
Definition: CGExpr.cpp:3598
Represents Objective-C's @throw statement.
Definition: StmtObjC.h:313
void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit=false)
EmitStoreThroughLValue - Store the specified rvalue into the specified lvalue, where both are guarant...
Definition: CGExpr.cpp:1568
void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit)
EmitComplexExprIntoLValue - Emit the given expression of complex type and place its result into the s...
bool typeIsSuitableForInlineAtomic(QualType Ty, bool IsVolatile) const
An type is a candidate for having its loads and stores be made atomic if we are operating under /vola...
Definition: CGAtomic.cpp:1296
bool ShouldInstrumentFunction()
ShouldInstrumentFunction - Return true if the current function should be instrumented with __cyg_prof...
CGCapturedStmtInfo(const CapturedStmt &S, CapturedRegionKind K=CR_Default)
LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e)
Definition: CGExpr.cpp:3495
void GenerateObjCSetter(ObjCImplementationDecl *IMP, const ObjCPropertyImplDecl *PID)
GenerateObjCSetter - Synthesize an Objective-C property setter function for the given property...
Definition: CGObjC.cpp:1327
Address GenerateCapturedStmtArgument(const CapturedStmt &S)
Definition: CGStmt.cpp:2127
std::unique_ptr< llvm::MemoryBuffer > Buffer
void EmitSEHExceptionCodeSave(CodeGenFunction &ParentCGF, llvm::Value *ParentFP, llvm::Value *EntryEBP)
void GenerateCode(GlobalDecl GD, llvm::Function *Fn, const CGFunctionInfo &FnInfo)
Represents an array type, per C99 6.7.5.2 - Array Declarators.
Definition: Type.h:2424
void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, llvm::Value *Address)
Address EmitArrayToPointerDecay(const Expr *Array, AlignmentSource *AlignSource=nullptr)
Definition: CGExpr.cpp:2594
bool sanitizePerformTypeCheck() const
Whether any type-checking sanitizers are enabled.
Definition: CGExpr.cpp:500
Represents a call to a C++ constructor.
Definition: ExprCXX.h:1149
RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, ReturnValueSlot ReturnValue)
Definition: CGExprCXX.cpp:106
DominatingValue< T >::saved_type saveValueInCond(T value)
CGCapturedStmtInfo(CapturedRegionKind K=CR_Default)
The l-value was an access to a declared entity or something equivalently strong, like the address of ...
void EmitARCCopyWeak(Address dst, Address src)
void @objc_copyWeak(i8** dest, i8** src) Disregards the current value in dest.
Definition: CGObjC.cpp:2270
llvm::Value * EmitObjCMRRAutoreleasePoolPush()
Produce the code to do an MRR version objc_autoreleasepool_push.
Definition: CGObjC.cpp:2313
llvm::Function * GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, GlobalDecl GD, const ThunkInfo &Thunk)
Definition: CGVTables.cpp:144
llvm::Constant * GenerateObjCAtomicSetterCopyHelperFunction(const ObjCPropertyImplDecl *PID)
GenerateObjCAtomicSetterCopyHelperFunction - Given a c++ object type with non-trivial copy assignment...
Definition: CGObjC.cpp:2898
This represents '#pragma omp parallel for' directive.
Definition: StmtOpenMP.h:1221
const LangOptions & getLangOpts() const
LValue EmitLValueForFieldInitialization(LValue Base, const FieldDecl *Field)
EmitLValueForFieldInitialization - Like EmitLValueForField, except that if the Field is a reference...
Definition: CGExpr.cpp:3213
llvm::Value * EmitARCRetainNonBlock(llvm::Value *value)
Retain the given object, with normal retain semantics.
Definition: CGObjC.cpp:1948
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2134
Represents a prvalue temporary that is written into memory so that a reference can bind to it...
Definition: ExprCXX.h:3864
static bool needsSaving(llvm::Value *value)
Answer whether the given value needs extra work to be saved.
static type restore(CodeGenFunction &CGF, saved_type value)
void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit)
Definition: CGAtomic.cpp:1725
static OpaqueValueMappingData bind(CodeGenFunction &CGF, const OpaqueValueExpr *ov, const RValue &rv)
void EmitOMPCopy(QualType OriginalType, Address DestAddr, Address SrcAddr, const VarDecl *DestVD, const VarDecl *SrcVD, const Expr *Copy)
Emit proper copying of data from one variable to another.
LValue EmitCXXUuidofLValue(const CXXUuidofExpr *E)
Definition: CGExpr.cpp:3684
const CXXBaseSpecifier *const * path_const_iterator
Definition: Expr.h:2675
void EmitOMPParallelForSimdDirective(const OMPParallelForSimdDirective &S)
Address GetAddrOfLocalVar(const VarDecl *VD)
GetAddrOfLocalVar - Return the address of a local variable.
TypeEvaluationKind
The kind of evaluation to perform on values of a particular type.
llvm::Function * GenerateOpenMPCapturedStmtFunction(const CapturedStmt &S)
VarDecl - An instance of this class is created to represent a variable declaration or definition...
Definition: Decl.h:699
static saved_type save(CodeGenFunction &CGF, type value)
Definition: EHScopeStack.h:60
void EmitOMPCriticalDirective(const OMPCriticalDirective &S)
LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E)
Definition: CGExpr.cpp:2240
ObjCIsaExpr - Represent X->isa and X.isa when X is an ObjC 'id' type.
Definition: ExprObjC.h:1383
CompoundLiteralExpr - [C99 6.5.2.5].
Definition: Expr.h:2540
RAII object to set/unset CodeGenFunction::IsSanitizerScope.
LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E)
Definition: CGExpr.cpp:3721
uint64_t getProfileCount(const Stmt *S)
Get the profiler's count for the given statement.
llvm::Value * EmitObjCAutoreleasePoolPush()
Produce the code to do a objc_autoreleasepool_push.
Definition: CGObjC.cpp:2278
field_iterator field_begin() const
Definition: Decl.cpp:3746
llvm::Value * GetVTTParameter(GlobalDecl GD, bool ForVirtualBase, bool Delegating)
GetVTTParameter - Return the VTT parameter that should be passed to a base constructor/destructor wit...
Definition: CGClass.cpp:424
This class gathers all debug information during compilation and is responsible for emitting to llvm g...
Definition: CGDebugInfo.h:51
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:113
llvm::Value * EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty)
Definition: CGObjC.cpp:3078
void EmitLabel(const LabelDecl *D)
EmitLabel - Emit the block for the given label.
Definition: CGStmt.cpp:433
llvm::CallInst * EmitTrapCall(llvm::Intrinsic::ID IntrID)
Emit a call to trap or debugtrap and attach function attribute "trap-func-name" if specified...
Definition: CGExpr.cpp:2583
void EmitVariablyModifiedType(QualType Ty)
EmitVLASize - Capture all the sizes for the VLA expressions in the given variably-modified type and s...
CharUnits getNaturalTypeAlignment(QualType T, AlignmentSource *Source=nullptr, bool forPointeeType=false)
LValue EmitComplexAssignmentLValue(const BinaryOperator *E)
Emit an l-value for an assignment (simple or compound) of complex type.
void setCurrentProfileCount(uint64_t Count)
Set the profiler's current count.
void pushFullExprCleanup(CleanupKind kind, As...A)
pushFullExprCleanup - Push a cleanup to be run at the end of the current full-expression.
static ConstantEmission forValue(llvm::Constant *C)
bool IsSanitizerScope
True if CodeGen currently emits code implementing sanitizer checks.
llvm::BasicBlock * EmitLandingPad()
Emits a landing pad for the current EH stack.
void pushCleanupTuple(CleanupKind Kind, std::tuple< As...> A)
Push a lazily-created cleanup on the stack. Tuple version.
Definition: EHScopeStack.h:280
capture_iterator capture_begin()
Retrieve an iterator pointing to the first capture.
Definition: Stmt.h:2126
RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E, ReturnValueSlot ReturnValue)
Definition: CGExprCXX.cpp:345
A C++ throw-expression (C++ [except.throw]).
Definition: ExprCXX.h:900
Represents an expression – generally a full-expression – that introduces cleanups to be run at the en...
Definition: ExprCXX.h:2847
llvm::Value * EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:3545
iterator begin() const
Definition: Type.h:4072
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have...
Definition: Linkage.h:25
Defines the clang::Expr interface and subclasses for C++ expressions.
static void destroyBlockInfos(CGBlockInfo *info)
Destroy a chain of block layouts.
Definition: CGBlocks.cpp:659
void SimplifyForwardingBlocks(llvm::BasicBlock *BB)
SimplifyForwardingBlocks - If the given basic block is only a branch to another basic block...
Definition: CGStmt.cpp:345
void emitImplicitAssignmentOperatorBody(FunctionArgList &Args)
Definition: CGClass.cpp:1601
llvm::Value * EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E)
Definition: CGObjC.cpp:229
void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, llvm::Value **Result=nullptr)
EmitStoreThroughBitfieldLValue - Store Src into Dst with same constraints as EmitStoreThroughLValue.
Definition: CGExpr.cpp:1657
Address emitAddrOfImagComponent(Address complex, QualType complexType)
The collection of all-type qualifiers we support.
Definition: Type.h:116
EHScopeStack::stable_iterator PrologueCleanupDepth
PrologueCleanupDepth - The cleanup depth enclosing all the cleanups associated with the parameters...
A jump destination is an abstract label, branching to which may require a jump out through normal cle...
llvm::Value * EmitObjCThrowOperand(const Expr *expr)
Definition: CGObjC.cpp:2794
LabelStmt - Represents a label, which has a substatement.
Definition: Stmt.h:777
void EmitOMPTaskLoopSimdDirective(const OMPTaskLoopSimdDirective &S)
JumpDest getJumpDestForLabel(const LabelDecl *S)
getBasicBlockForLabel - Return the LLVM basicblock that the specified label maps to.
Definition: CGStmt.cpp:422
void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index, QualType IndexType, bool Accessed)
Emit a check that Base points into an array object, which we can access at index Index.
Definition: CGExpr.cpp:718
RecordDecl - Represents a struct/union/class.
Definition: Decl.h:3166
void popCatchScope()
popCatchScope - Pops the catch scope at the top of the EHScope stack, emitting any required code (oth...
llvm::Value * EmitCommonNeonBuiltinExpr(unsigned BuiltinID, unsigned LLVMIntrinsic, unsigned AltLLVMIntrinsic, const char *NameHint, unsigned Modifier, const CallExpr *E, SmallVectorImpl< llvm::Value * > &Ops, Address PtrOp0, Address PtrOp1)
Definition: CGBuiltin.cpp:2925
llvm::DenseMap< const VarDecl *, FieldDecl * > LambdaCaptureFields
An object to manage conditionally-evaluated expressions.
PeepholeProtection protectFromPeepholes(RValue rvalue)
protectFromPeepholes - Protect a value that we're intending to store to the side, but which will prob...
llvm::BasicBlock * getTerminateHandler()
getTerminateHandler - Return a handler (not a landing pad, just a catch handler) that just calls term...
void EmitCXXForRangeStmt(const CXXForRangeStmt &S, ArrayRef< const Attr * > Attrs=None)
Definition: CGStmt.cpp:853
void EmitOMPSimdDirective(const OMPSimdDirective &S)
llvm::Value * EmitCXXNewExpr(const CXXNewExpr *E)
Definition: CGExprCXX.cpp:1308
void emitDestroy(Address addr, QualType type, Destroyer *destroyer, bool useEHCleanupForArray)
emitDestroy - Immediately perform the destruction of the given object.
Definition: CGDecl.cpp:1496
ConditionalCleanup stores the saved form of its parameters, then restores them and performs the clean...
Definition: EHScopeStack.h:195
llvm::Value * EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, bool isInc, bool isPre)
void emitByrefStructureInit(const AutoVarEmission &emission)
Initialize the structural components of a __block variable, i.e.
Definition: CGBlocks.cpp:2143
CGBlockInfo * FirstBlockInfo
FirstBlockInfo - The head of a singly-linked-list of block layouts.
LValue EmitScalarCompoundAssignWithComplex(const CompoundAssignOperator *E, llvm::Value *&Result)
void setScopeDepth(EHScopeStack::stable_iterator depth)
void EmitFunctionEpilog(const CGFunctionInfo &FI, bool EmitRetDbgLoc, SourceLocation EndLoc)
EmitFunctionEpilog - Emit the target specific LLVM code to return the given temporary.
Definition: CGCall.cpp:2363
This represents '#pragma omp parallel' directive.
Definition: StmtOpenMP.h:232
class LLVM_ALIGNAS(8) DependentTemplateSpecializationType const IdentifierInfo * Name
Represents a template specialization type whose template cannot be resolved, e.g. ...
Definition: Type.h:4381
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E)
Definition: CGExpr.cpp:3740
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:91
LValue EmitLValueForLambdaField(const FieldDecl *Field)
Given that we are currently emitting a lambda, emit an l-value for one of its members.
Definition: CGExpr.cpp:3065
void EmitExprAsInit(const Expr *init, const ValueDecl *D, LValue lvalue, bool capturedByInit)
EmitExprAsInit - Emits the code necessary to initialize a location in memory with the given initializ...
Definition: CGDecl.cpp:1275
std::pair< LValue, llvm::Value * > EmitARCStoreAutoreleasing(const BinaryOperator *e)
Definition: CGObjC.cpp:2842
llvm::Value * EmitDynamicCast(Address V, const CXXDynamicCastExpr *DCE)
Definition: CGExprCXX.cpp:1847
llvm::Value * EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr)
Definition: CGObjC.cpp:1784
RValue EmitReferenceBindingToExpr(const Expr *E)
Emits a reference binding to the passed in expression.
Definition: CGExpr.cpp:460
llvm::SmallPtrSet< const CXXRecordDecl *, 4 > VisitedVirtualBasesSetTy
void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, Address This, Address Src, const CXXConstructExpr *E)
Definition: CGClass.cpp:2147
The scope used to remap some variables as private in the OpenMP loop body (or other captured region e...
SmallVector< Address, 1 > SEHCodeSlotStack
A stack of exception code slots.
LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E)
Definition: CGExpr.cpp:3690
bool isReferenceType() const
Definition: Type.h:5314
llvm::Value * EmitARCRetainAutoreleaseReturnValue(llvm::Value *value)
Do a fused retain/autorelease of the given object.
Definition: CGObjC.cpp:2162
FieldDecl - An instance of this class is created by Sema::ActOnField to represent a member of a struc...
Definition: Decl.h:2209
void rescopeLabels()
Change the cleanup scope of the labels in this lexical scope to match the scope of the enclosing cont...
Definition: CGStmt.cpp:461
An RAII object to set (and then clear) a mapping for an OpaqueValueExpr.
LValue EmitOMPArraySectionExpr(const OMPArraySectionExpr *E, bool IsLowerBound=true)
Definition: CGExpr.cpp:2830
llvm::CallInst * EmitRuntimeCall(llvm::Value *callee, const Twine &name="")
void InsertHelper(llvm::Instruction *I, const llvm::Twine &Name, llvm::BasicBlock *BB, llvm::BasicBlock::iterator InsertPt) const
CGBuilder insert helper.
void pushEHDestroy(QualType::DestructionKind dtorKind, Address addr, QualType type)
pushEHDestroy - Push the standard destructor for the given type as an EH-only cleanup.
Definition: CGDecl.cpp:1435
Helper class with most of the code for saving a value for a conditional expression cleanup...
void EmitAtomicUpdate(LValue LVal, llvm::AtomicOrdering AO, const llvm::function_ref< RValue(RValue)> &UpdateOp, bool IsVolatile)
Definition: CGAtomic.cpp:1828
void EmitVTablePtrCheck(const CXXRecordDecl *RD, llvm::Value *VTable, CFITypeCheckKind TCK, SourceLocation Loc)
EmitVTablePtrCheck - Emit a check that VTable is a valid virtual table for RD using llvm...
Definition: CGClass.cpp:2546
void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn, const std::vector< std::pair< llvm::WeakVH, llvm::Constant * > > &DtorsAndObjects)
GenerateCXXGlobalDtorsFunc - Generates code for destroying global variables.
Definition: CGDeclCXX.cpp:555
llvm::Value * EmitARCAutoreleaseReturnValue(llvm::Value *value)
Autorelease the given object.
Definition: CGObjC.cpp:2152
llvm::Value * SEHInfo
Value returned by __exception_info intrinsic.
static CharUnits Zero()
Zero - Construct a CharUnits quantity of zero.
Definition: CharUnits.h:53
llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, ArrayRef< llvm::Value * > Args, const Twine &Name="")
Emits a call or invoke instruction to the given function, depending on the current state of the EH st...
Definition: CGCall.cpp:3122
void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, ObjCMethodDecl *MD, bool ctor)
Definition: CGObjC.cpp:1408
virtual const FieldDecl * lookup(const VarDecl *VD) const
Lookup the captured field decl for a variable.
Defines some OpenMP-specific enums and functions.
ExtVectorElementExpr - This represents access to specific elements of a vector, and may occur on the ...
Definition: Expr.h:4522
A metaprogramming class for ensuring that a value will dominate an arbitrary position in a function...
Definition: EHScopeStack.h:66
RValue EmitCall(const CGFunctionInfo &FnInfo, llvm::Value *Callee, ReturnValueSlot ReturnValue, const CallArgList &Args, CGCalleeInfo CalleeInfo=CGCalleeInfo(), llvm::Instruction **callOrInvoke=nullptr)
EmitCall - Generate a call of the given function, expecting the given result type, and using the given argument list which specifies both the LLVM arguments and the types they were derived from.
Definition: CGCall.cpp:3159
This represents '#pragma omp barrier' directive.
Definition: StmtOpenMP.h:1552
CleanupKind getCleanupKind(QualType::DestructionKind kind)
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:48
ObjCArrayLiteral - used for objective-c array containers; as in: @["Hello", NSApp, [NSNumber numberWithInt:42]];.
Definition: ExprObjC.h:144
The this pointer adjustment as well as an optional return adjustment for a thunk. ...
Definition: ABI.h:179
void InitTempAlloca(Address Alloca, llvm::Value *Value)
InitTempAlloca - Provide an initial value for the given alloca which will be observable at all locati...
Definition: CGExpr.cpp:84
Address getExceptionSlot()
Returns a pointer to the function's exception object and selector slot, which is assigned in every la...
llvm::Value * EmitObjCBoxedExpr(const ObjCBoxedExpr *E)
EmitObjCBoxedExpr - This routine generates code to call the appropriate expression boxing method...
Definition: CGObjC.cpp:60
This is a common base class for loop directives ('omp simd', 'omp for', 'omp for simd' etc...
Definition: StmtOpenMP.h:294
RValue EmitLoadOfExtVectorElementLValue(LValue V)
Definition: CGExpr.cpp:1492
This represents '#pragma omp critical' directive.
Definition: StmtOpenMP.h:1147
LValue EmitLambdaLValue(const LambdaExpr *E)
Definition: CGExpr.cpp:3700
void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, bool ForVirtualBase, bool Delegating, Address This, const CXXConstructExpr *E)
Definition: CGClass.cpp:2048
void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, const VarDecl *D, llvm::GlobalVariable *Addr, bool PerformInit)
Emit the code necessary to initialize the given global variable.
Definition: CGDeclCXX.cpp:476
void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD)
Definition: CGClass.cpp:2753
RValue EmitAnyExprToTemp(const Expr *E)
EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will always be accessible even if ...
Definition: CGExpr.cpp:158
ComplexPairTy EmitLoadOfComplex(LValue src, SourceLocation loc)
EmitLoadOfComplex - Load a complex number from the specified l-value.
bool EmitOMPLastprivateClauseInit(const OMPExecutableDirective &D, OMPPrivateScope &PrivateScope)
Emit initial code for lastprivate variables.
Address CreateIRTemp(QualType T, const Twine &Name="tmp")
CreateIRTemp - Create a temporary IR object of the given type, with appropriate alignment.
Definition: CGExpr.cpp:92
RValue EmitAnyExpr(const Expr *E, AggValueSlot aggSlot=AggValueSlot::ignored(), bool ignoreResult=false)
EmitAnyExpr - Emit code to compute the specified expression which can have any type.
Definition: CGExpr.cpp:139
void EmitNoreturnRuntimeCallOrInvoke(llvm::Value *callee, ArrayRef< llvm::Value * > args)
Emits a call or invoke to the given noreturn runtime function.
Definition: CGCall.cpp:3079
const RValue & getOpaqueRValueMapping(const OpaqueValueExpr *e)
getOpaqueRValueMapping - Given an opaque value expression (which must be mapped to an r-value)...
llvm::BasicBlock * getStartingBlock() const
Returns a block which will be executed prior to each evaluation of the conditional code...
llvm::Value * EmitARCStoreStrongCall(Address addr, llvm::Value *value, bool resultIgnored)
Store into a strong object.
Definition: CGObjC.cpp:2082
IndirectGotoStmt - This represents an indirect goto.
Definition: Stmt.h:1236
Describes an C or C++ initializer list.
Definition: Expr.h:3724
A C++ typeid expression (C++ [expr.typeid]), which gets the type_info that corresponds to the supplie...
Definition: ExprCXX.h:559
void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, llvm::Value *arrayEnd, QualType elementType, CharUnits elementAlignment, Destroyer *destroyer)
pushRegularPartialArrayCleanup - Push an EH cleanup to destroy already-constructed elements of the gi...
Definition: CGDecl.cpp:1690
A class controlling the emission of a finally block.
Address emitAddrOfRealComponent(Address complex, QualType complexType)
llvm::Value * BuildVector(ArrayRef< llvm::Value * > Ops)
Definition: CGBuiltin.cpp:6088
BinaryOperatorKind
llvm::Value * EmitObjCStringLiteral(const ObjCStringLiteral *E)
Emits an instance of NSConstantString representing the object.
Definition: CGObjC.cpp:46
static bool hasScalarEvaluationKind(QualType T)
Address GetAddrOfBlockDecl(const VarDecl *var, bool ByRef)
Definition: CGBlocks.cpp:999
ForStmt - This represents a 'for (init;cond;inc)' stmt.
Definition: Stmt.h:1131
ObjCContainerDecl - Represents a container for method declarations.
Definition: DeclObjC.h:696
void emitOMPSimpleStore(LValue LVal, RValue RVal, QualType RValTy, SourceLocation Loc)
void EmitDoStmt(const DoStmt &S, ArrayRef< const Attr * > Attrs=None)
Definition: CGStmt.cpp:698
CharUnits - This is an opaque type for sizes expressed in character units.
Definition: CharUnits.h:38
void EmitARCDestroyStrong(Address addr, ARCPreciseLifetime_t precise)
Destroy a __strong variable.
Definition: CGObjC.cpp:2068
void ExitSEHTryStmt(const SEHTryStmt &S)
CGCapturedStmtRAII(CodeGenFunction &CGF, CGCapturedStmtInfo *NewCapturedStmtInfo)
void EmitOMPCancellationPointDirective(const OMPCancellationPointDirective &S)
LexicalScope(CodeGenFunction &CGF, SourceRange Range)
Enter a new cleanup scope.
RAII for correct setting/restoring of CapturedStmtInfo.
llvm::Value * EmitBlockLiteral(const BlockExpr *)
Emit a block literal expression in the current function.
Definition: CGBlocks.cpp:669
void EmitOMPLastprivateClauseFinal(const OMPExecutableDirective &D, llvm::Value *IsLastIterCond=nullptr)
Emit final copying of lastprivate values to original variables at the end of the worksharing or simd ...
void EmitContinueStmt(const ContinueStmt &S)
Definition: CGStmt.cpp:1034
void EmitOMPTargetDirective(const OMPTargetDirective &S)
TypeDecl - Represents a declaration of a type.
Definition: Decl.h:2486
A builtin binary operation expression such as "x + y" or "x <= y".
Definition: Expr.h:2875
bool needsEHCleanup(QualType::DestructionKind kind)
Determines whether an EH cleanup is required to destroy a type with the given destruction kind...
static OpaqueValueMappingData bind(CodeGenFunction &CGF, const OpaqueValueExpr *ov, const LValue &lv)
void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::Constant *fn, llvm::Constant *addr)
Call atexit() with a function that passes the given argument to the given function.
Definition: CGDeclCXX.cpp:219
CXXForRangeStmt - This represents C++0x [stmt.ranged]'s ranged for statement, represented as 'for (ra...
Definition: StmtCXX.h:128
bool IsOutlinedSEHHelper
True if the current function is an outlined SEH helper.
void EmitSwitchStmt(const SwitchStmt &S)
Definition: CGStmt.cpp:1423
This represents '#pragma omp cancellation point' directive.
Definition: StmtOpenMP.h:2107
bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const
isObviouslyBranchWithoutCleanups - Return true if a branch to the specified destination obviously has...
Definition: CGCleanup.cpp:955
void EmitAggregateAssign(Address DestPtr, Address SrcPtr, QualType EltTy)
EmitAggregateCopy - Emit an aggregate assignment.
llvm::Value * EmitARCLoadWeak(Address addr)
i8* @objc_loadWeak(i8** addr) Essentially objc_autorelease(objc_loadWeakRetained(addr)).
Definition: CGObjC.cpp:2199
ObjCStringLiteral, used for Objective-C string literals i.e.
Definition: ExprObjC.h:29
llvm::BasicBlock * getInvokeDestImpl()
void incrementProfileCounter(const Stmt *S)
Increment the profiler's counter for the given statement.
LValue EmitCXXConstructLValue(const CXXConstructExpr *E)
Definition: CGExpr.cpp:3665
void initFullExprCleanup()
Set up the last cleaup that was pushed as a conditional full-expression cleanup.
Definition: CGCleanup.cpp:268
llvm::Function * GenerateSEHFinallyFunction(CodeGenFunction &ParentCGF, const SEHFinallyStmt &Finally)
LValue EmitUnaryOpLValue(const UnaryOperator *E)
Definition: CGExpr.cpp:2173
A stack of scopes which respond to exceptions, including cleanups and catch blocks.
Definition: EHScopeStack.h:97
void EmitStmt(const Stmt *S)
EmitStmt - Emit the code for the statement.
Definition: CGStmt.cpp:48
void EmitOMPParallelDirective(const OMPParallelDirective &S)
llvm::BasicBlock * createBasicBlock(const Twine &name="", llvm::Function *parent=nullptr, llvm::BasicBlock *before=nullptr)
createBasicBlock - Create an LLVM basic block.
llvm::Value * EmitARCRetainScalarExpr(const Expr *expr)
EmitARCRetainScalarExpr - Semantically equivalent to EmitARCRetainObject(e->getType(), EmitScalarExpr(e)), but making a best-effort attempt to peephole expressions that naturally produce retained objects.
Definition: CGObjC.cpp:2743
This represents '#pragma omp teams' directive.
Definition: StmtOpenMP.h:2050
void EmitIgnoredExpr(const Expr *E)
EmitIgnoredExpr - Emit an expression in a context which ignores the result.
Definition: CGExpr.cpp:127
Denotes a cleanup that should run when a scope is exited using normal control flow (falling off the e...
Definition: EHScopeStack.h:85
void EmitAtomicInit(Expr *E, LValue lvalue)
Definition: CGAtomic.cpp:1835
llvm::Function * EmitCapturedStmt(const CapturedStmt &S, CapturedRegionKind K)
Generate an outlined function for the body of a CapturedStmt, store any captured variables into the c...
Definition: CGStmt.cpp:2112
void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, QualType DeleteTy)
Definition: CGExprCXX.cpp:1479
Enums/classes describing ABI related information about constructors, destructors and thunks...
CastExpr - Base class for type casts, including both implicit casts (ImplicitCastExpr) and explicit c...
Definition: Expr.h:2610
LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E)
Definition: CGExpr.cpp:3707
bool requiresCleanups() const
Determine whether this scope requires any cleanups.
Represents binding an expression to a temporary.
Definition: ExprCXX.h:1106
RValue EmitAtomicExpr(AtomicExpr *E)
Definition: CGAtomic.cpp:673
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked l...
Definition: ExprCXX.h:1422
iterator end() const
GlobalDecl CurGD
CurGD - The GlobalDecl for the current function being compiled.
void EmitDefaultStmt(const DefaultStmt &S)
Definition: CGStmt.cpp:1210
RValue EmitBuiltinExpr(const FunctionDecl *FD, unsigned BuiltinID, const CallExpr *E, ReturnValueSlot ReturnValue)
Definition: CGBuiltin.cpp:410
static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts=false)
ContainsLabel - Return true if the statement contains a label in it.
llvm::DebugLoc EmitReturnBlock()
Emit the unified return block, trying to avoid its emission when possible.
const RecordDecl * getCapturedRecordDecl() const
Retrieve the record declaration for captured variables.
Definition: Stmt.h:2101
void EmitCaseStmtRange(const CaseStmt &S)
EmitCaseStmtRange - If case statement range is not too big then add multiple cases to switch instruct...
Definition: CGStmt.cpp:1049
uint64_t getCurrentProfileCount()
Get the profiler's current count.
Represents an ObjC class declaration.
Definition: DeclObjC.h:853
RValue convertTempToRValue(Address addr, QualType type, SourceLocation Loc)
Given the address of a temporary variable, produce an r-value of its type.
Definition: CGExpr.cpp:3940
Checking the operand of a cast to a virtual base object.
JumpDest getJumpDestInCurrentScope(StringRef Name=StringRef())
The given basic block lies in the current EH scope, but may be a target of a potentially scope-crossi...
bool isValid() const
Definition: Address.h:36
detail::InMemoryDirectory::const_iterator I
llvm::AllocaInst * EHSelectorSlot
The selector slot.
QualType getType() const
Definition: Decl.h:530
llvm::Value * EmitARCRetainAutoreleasedReturnValue(llvm::Value *value)
Retain the given object which is the result of a function call.
Definition: CGObjC.cpp:1989
static bool ShouldNullCheckClassCastValue(const CastExpr *Cast)
llvm::Value * EmitCheckValue(llvm::Value *V)
Convert a value into a format suitable for passing to a runtime sanitizer handler.
Definition: CGExpr.cpp:2314
void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType)
EmitCallArg - Emit a single call argument.
Definition: CGCall.cpp:2920
Checking the operand of a load. Must be suitably sized and aligned.
llvm::Value * EmitARCRetainAutoreleaseNonBlock(llvm::Value *value)
Do a fused retain/autorelease of the given object.
Definition: CGObjC.cpp:2191
~LexicalScope()
Exit this cleanup scope, emitting any accumulated cleanups.
LValue EmitLValueForField(LValue Base, const FieldDecl *Field)
Definition: CGExpr.cpp:3101
void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init)
Checking the 'this' pointer for a call to a non-static member function.
ObjCPropertyImplDecl - Represents implementation declaration of a property in a class or category imp...
Definition: DeclObjC.h:2605
llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee, ArrayRef< llvm::Value * > args, const Twine &name="")
Emits a call or invoke instruction to the given runtime function.
Definition: CGCall.cpp:3111
LValue MakeAddrLValue(Address Addr, QualType T, AlignmentSource AlignSource=AlignmentSource::Type)
LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E)
Definition: CGExpr.cpp:2977
OpenMP 4.0 [2.4, Array Sections].
Definition: ExprOpenMP.h:45
RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, ReturnValueSlot Return=ReturnValueSlot())
Definition: CGObjC.cpp:341
void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest)
Definition: CGExprCXX.cpp:435
CleanupKind Kind
The kind of cleanup to push: a value from the CleanupKind enumeration.
void EmitCheck(ArrayRef< std::pair< llvm::Value *, SanitizerMask >> Checked, StringRef CheckName, ArrayRef< llvm::Constant * > StaticArgs, ArrayRef< llvm::Value * > DynamicArgs)
Create a basic block that will call a handler function in a sanitizer runtime with the provided argum...
Definition: CGExpr.cpp:2432
CompoundStmt - This represents a group of statements like { stmt stmt }.
Definition: Stmt.h:539
AutoVarEmission EmitAutoVarAlloca(const VarDecl &var)
EmitAutoVarAlloca - Emit the alloca and debug information for a local variable.
Definition: CGDecl.cpp:942
std::pair< llvm::Value *, llvm::Value * > ComplexPairTy
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3041
llvm::CallInst * EmitNounwindRuntimeCall(llvm::Value *callee, const Twine &name="")
void EmitOMPParallelSectionsDirective(const OMPParallelSectionsDirective &S)
Describes the capture of either a variable, or 'this', or variable-length array type.
Definition: Stmt.h:1997
const CodeGen::CGBlockInfo * BlockInfo
llvm::Function * GenerateBlockFunction(GlobalDecl GD, const CGBlockInfo &Info, const DeclMapTy &ldm, bool IsLambdaConversionToBlock)
Definition: CGBlocks.cpp:1137
This represents '#pragma omp taskgroup' directive.
Definition: StmtOpenMP.h:1640
const TargetCodeGenInfo & getTargetCodeGenInfo()
CGBlockInfo - Information to generate a block literal.
Definition: CGBlocks.h:153
void EmitAnyExprToMem(const Expr *E, Address Location, Qualifiers Quals, bool IsInitializer)
EmitAnyExprToMem - Emits the code necessary to evaluate an arbitrary expression into the given memory...
Definition: CGExpr.cpp:168
unsigned getNumObjects() const
Definition: ExprCXX.h:2878
RValue - This trivial value class is used to represent the result of an expression that is evaluated...
Definition: CGValue.h:38
bool addPrivate(const VarDecl *LocalVD, llvm::function_ref< Address()> PrivateGen)
Registers LocalVD variable as a private and apply PrivateGen function for it to generate correspondin...
CleanupKind getARCCleanupKind()
Retrieves the default cleanup kind for an ARC cleanup.
void EmitDelegateCallArg(CallArgList &args, const VarDecl *param, SourceLocation loc)
EmitDelegateCallArg - We are performing a delegate call; that is, the current function is delegating ...
Definition: CGCall.cpp:2529
Represents a call to the builtin function __builtin_va_arg.
Definition: Expr.h:3633
ID
Defines the set of possible language-specific address spaces.
Definition: AddressSpaces.h:27
Address CreateDefaultAlignTempAlloca(llvm::Type *Ty, const Twine &Name="tmp")
CreateDefaultAlignedTempAlloca - This creates an alloca with the default ABI alignment of the given L...
Definition: CGExpr.cpp:77
llvm::Value * ExceptionSlot
The exception slot.
This represents '#pragma omp distribute' directive.
Definition: StmtOpenMP.h:2361
LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment, AlignmentSource AlignSource=AlignmentSource::Type)
llvm::Value * EmitVAStartEnd(llvm::Value *ArgValue, bool IsStart)
Emits a call to an LLVM variable-argument intrinsic, either llvm.va_start or llvm.va_end.
Definition: CGBuiltin.cpp:335
Exposes information about the current target.
llvm::Value * EmitARCStoreWeak(Address addr, llvm::Value *value, bool ignored)
i8* @objc_storeWeak(i8** addr, i8* value) Returns value.
Definition: CGObjC.cpp:2214
virtual StringRef getHelperName() const
Get the name of the capture helper.
void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr, bool PerformInit)
Emit code in this function to perform a guarded variable initialization.
Definition: CGDeclCXX.cpp:237
int * Depth
llvm::Value * GetVTablePtr(Address This, llvm::Type *VTableTy, const CXXRecordDecl *VTableClass)
GetVTablePtr - Return the Value of the vtable pointer member pointed to by This.
Definition: CGClass.cpp:2441
LValue EmitInitListLValue(const InitListExpr *E)
Definition: CGExpr.cpp:3250
static TypeEvaluationKind getEvaluationKind(QualType T)
hasAggregateLLVMType - Return true if the specified AST type will map into an aggregate LLVM type or ...
void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst)
Definition: CGExpr.cpp:1724
CXXDtorType
C++ destructor types.
Definition: ABI.h:34
llvm::Value * getPointer() const
Definition: Address.h:38
llvm::BasicBlock * EHResumeBlock
EHResumeBlock - Unified block containing a call to llvm.eh.resume.
void EmitCapturedLocals(CodeGenFunction &ParentCGF, const Stmt *OutlinedStmt, bool IsFilter)
Scan the outlined statement for captures from the parent function.
friend class ASTContext
Definition: Type.h:4012
ValueDecl - Represent the declaration of a variable (in which case it is an lvalue) a function (in wh...
Definition: Decl.h:521
llvm::Function * generateDestroyHelper(Address addr, QualType type, Destroyer *destroyer, bool useEHCleanupForArray, const VarDecl *VD)
generateDestroyHelper - Generates a helper function which, when invoked, destroys the given object...
Definition: CGDeclCXX.cpp:582
Expr - This represents one expression.
Definition: Expr.h:104
void enter(CodeGenFunction &CGF, const Stmt *Finally, llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, llvm::Constant *rethrowFn)
Enters a finally block for an implementation using zero-cost exceptions.
void EmitARCMoveWeak(Address dst, Address src)
void @objc_moveWeak(i8** dest, i8** src) Disregards the current value in dest.
Definition: CGObjC.cpp:2261
void EmitAutoVarInit(const AutoVarEmission &emission)
Definition: CGDecl.cpp:1166
static Address invalid()
Definition: Address.h:35
bool CanDevirtualizeMemberFunctionCall(const Expr *Base, const CXXMethodDecl *MD)
CanDevirtualizeMemberFunctionCalls - Checks whether virtual calls on given expr can be devirtualized...
Definition: CGClass.cpp:2622
Enters a new scope for capturing cleanups, all of which will be executed once the scope is exited...
LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E)
Definition: CGExpr.cpp:3675
llvm::Value * EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, QualType DstTy, SourceLocation Loc)
Emit a conversion from the specified complex type to the specified destination type, where the destination type is an LLVM scalar type.
void EmitCaseStmt(const CaseStmt &S)
Definition: CGStmt.cpp:1127
void EmitStoreOfScalar(llvm::Value *Value, Address Addr, bool Volatile, QualType Ty, AlignmentSource AlignSource=AlignmentSource::Type, llvm::MDNode *TBAAInfo=nullptr, bool isInit=false, QualType TBAABaseTy=QualType(), uint64_t TBAAOffset=0, bool isNontemporal=false)
EmitStoreOfScalar - Store a scalar value to an address, taking care to appropriately convert from the...
Definition: CGExpr.cpp:1348
llvm::Function * GenerateSEHFilterFunction(CodeGenFunction &ParentCGF, const SEHExceptStmt &Except)
Create a stub filter function that will ultimately hold the code of the filter expression.
RValue EmitCXXMemberOrOperatorCall(const CXXMethodDecl *MD, llvm::Value *Callee, ReturnValueSlot ReturnValue, llvm::Value *This, llvm::Value *ImplicitParam, QualType ImplicitParamTy, const CallExpr *E)
Definition: CGExprCXX.cpp:72
static ParamValue forIndirect(Address addr)
void pushCallObjectDeleteCleanup(const FunctionDecl *OperatorDelete, llvm::Value *CompletePtr, QualType ElementType)
Definition: CGExprCXX.cpp:1529
void GenerateObjCMethod(const ObjCMethodDecl *OMD)
Generate an Objective-C method.
Definition: CGObjC.cpp:558
OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *opaqueValue, RValue rvalue)
void EmitOMPTeamsDirective(const OMPTeamsDirective &S)
void EmitVTableAssumptionLoad(const VPtr &vptr, Address This)
Emit assumption that vptr load == global vtable.
Definition: CGClass.cpp:2118
void ForceCleanup()
Force the emission of cleanups now, instead of waiting until this object is destroyed.
static bool isObjCMethodWithTypeParams(const ObjCMethodDecl *method)
BlockExpr - Adaptor class for mixing a BlockDecl with expressions.
Definition: Expr.h:4580
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2345
Address EmitCompoundStmt(const CompoundStmt &S, bool GetLast=false, AggValueSlot AVS=AggValueSlot::ignored())
EmitCompoundStmt - Emit a compound statement {..} node.
Definition: CGStmt.cpp:294
llvm::Constant * GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo)
Generate the destroy-helper function for a block closure object: static void block_destroy_helper(blo...
Definition: CGBlocks.cpp:1500
static saved_type save(CodeGenFunction &CGF, type value)
void SetFPAccuracy(llvm::Value *Val, float Accuracy)
SetFPAccuracy - Set the minimum required accuracy of the given floating point operation, expressed as the maximum relative error in ulp.
Definition: CGExpr.cpp:3955
AggValueSlot CreateAggTemp(QualType T, const Twine &Name="tmp")
CreateAggTemp - Create a temporary memory object for the given aggregate type.
llvm::AllocaInst * NormalCleanupDest
i32s containing the indexes of the cleanup destinations.
#define bool
Definition: stdbool.h:31
unsigned Size
The size of the following cleanup object.
ObjCDictionaryLiteral - AST node to represent objective-c dictionary literals; as in:"name" : NSUserN...
Definition: ExprObjC.h:257
DeclContext * getDeclContext()
Definition: DeclBase.h:393
void EmitSEHTryStmt(const SEHTryStmt &S)
ASTContext & getContext() const
CharUnits getNaturalPointeeTypeAlignment(QualType T, AlignmentSource *Source=nullptr)
llvm::Value * EmitToMemory(llvm::Value *Value, QualType Ty)
EmitToMemory - Change a scalar value from its value representation to its in-memory representation...
Definition: CGExpr.cpp:1323
llvm::BasicBlock * getBlock() const
Represents Objective-C's @synchronized statement.
Definition: StmtObjC.h:262
ObjCSelectorExpr used for @selector in Objective-C.
Definition: ExprObjC.h:397
EHScopeStack::stable_iterator getScopeDepth() const
static CharUnits fromQuantity(QuantityType Quantity)
fromQuantity - Construct a CharUnits quantity from a raw integer type.
Definition: CharUnits.h:63
CXXTryStmt - A C++ try block, including all handlers.
Definition: StmtCXX.h:65
void EmitOMPLinearClauseInit(const OMPLoopDirective &D)
Emit initial code for linear variables.
void generateObjCSetterBody(const ObjCImplementationDecl *classImpl, const ObjCPropertyImplDecl *propImpl, llvm::Constant *AtomicHelperFn)
Definition: CGObjC.cpp:1147
~OMPPrivateScope()
Exit scope - all the mapped variables are restored.
static LValue MakeAddr(Address address, QualType type, ASTContext &Context, AlignmentSource alignSource, llvm::MDNode *TBAAInfo=nullptr)
Definition: CGValue.h:371
llvm::Value * getExceptionFromSlot()
Returns the contents of the function's exception object and selector slots.
void EmitAsanPrologueOrEpilogue(bool Prologue)
Definition: CGClass.cpp:853
llvm::Value * EmitARCAutorelease(llvm::Value *value)
Autorelease the given object.
Definition: CGObjC.cpp:2143
stable_iterator stable_begin() const
Create a stable reference to the top of the EH stack.
Definition: EHScopeStack.h:378
llvm::LLVMContext & getLLVMContext()
llvm::BasicBlock * GetIndirectGotoBlock()
void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest)
Definition: CGExprCXX.cpp:1930
An RAII object to record that we're evaluating a statement expression.
TargetCodeGenInfo - This class organizes various target-specific codegeneration issues, like target-specific attributes, builtins and so on.
RValue EmitCXXMemberOrOperatorMemberCallExpr(const CallExpr *CE, const CXXMethodDecl *MD, ReturnValueSlot ReturnValue, bool HasQualifier, NestedNameSpecifier *Qualifier, bool IsArrow, const Expr *Base)
Definition: CGExprCXX.cpp:132
std::pair< bool, RValue > EmitOMPAtomicSimpleUpdateExpr(LValue X, RValue E, BinaryOperatorKind BO, bool IsXLHSInRHSPart, llvm::AtomicOrdering AO, SourceLocation Loc, const llvm::function_ref< RValue(RValue)> &CommonGen)
Emit atomic update code for constructs: X = X BO E or X = E BO E.
This represents '#pragma omp for' directive.
Definition: StmtOpenMP.h:773
void EmitConstructorBody(FunctionArgList &Args)
EmitConstructorBody - Emits the body of the current constructor.
Definition: CGClass.cpp:916
Address EmitPointerWithAlignment(const Expr *Addr, AlignmentSource *Source=nullptr)
EmitPointerWithAlignment - Given an expression with a pointer type, emit the value and compute our be...
Definition: CGExpr.cpp:795
void EmitOMPMasterDirective(const OMPMasterDirective &S)
llvm::Function * GenerateCapturedStmtFunction(const CapturedStmt &S)
Creates the outlined function for a CapturedStmt.
Definition: CGStmt.cpp:2134
ReturnStmt - This represents a return, optionally of an expression: return; return 4;...
Definition: Stmt.h:1344
LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T)
An expression that sends a message to the given Objective-C object or class.
Definition: ExprObjC.h:860
ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, bool isInc, bool isPre)
Definition: CGExpr.cpp:747
JumpDest(llvm::BasicBlock *Block, EHScopeStack::stable_iterator Depth, unsigned Index)
void ResolveBranchFixups(llvm::BasicBlock *Target)
Definition: CGCleanup.cpp:365
void EmitForwardingCallToLambda(const CXXMethodDecl *LambdaCallOperator, CallArgList &CallArgs)
Definition: CGClass.cpp:2686
void EmitMCountInstrumentation()
EmitMCountInstrumentation - Emit call to .mcount.
void EmitAggregateCopyCtor(Address DestPtr, Address SrcPtr, QualType DestTy, QualType SrcTy)
static OMPLinearClause * Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, OpenMPLinearClauseKind Modifier, SourceLocation ModifierLoc, SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef< Expr * > VL, ArrayRef< Expr * > PL, ArrayRef< Expr * > IL, Expr *Step, Expr *CalcStep)
Creates clause with a list of variables VL and a linear step Step.
An object which temporarily prevents a value from being destroyed by aggressive peephole optimization...
UnaryOperator - This represents the unary-expression's (except sizeof and alignof), the postinc/postdec operators from postfix-expression, and various extensions.
Definition: Expr.h:1654
void EmitOMPBarrierDirective(const OMPBarrierDirective &S)
void EmitLambdaToBlockPointerBody(FunctionArgList &Args)
Definition: CGClass.cpp:2742
llvm::Value * EmitCastToVoidPtr(llvm::Value *value)
Emit a cast to void* in the appropriate address space.
Definition: CGExpr.cpp:43
void emitArrayDestroy(llvm::Value *begin, llvm::Value *end, QualType elementType, CharUnits elementAlign, Destroyer *destroyer, bool checkZeroLength, bool useEHCleanup)
emitArrayDestroy - Destroys all the elements of the given array, beginning from last to first...
Definition: CGDecl.cpp:1535
ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr)
Try to emit a reference to the given value without producing it as an l-value.
Definition: CGExpr.cpp:1109
This represents '#pragma omp cancel' directive.
Definition: StmtOpenMP.h:2165
RunCleanupsScope(CodeGenFunction &CGF)
Enter a new cleanup scope.
RValue EmitLoadOfGlobalRegLValue(LValue LV)
Load of global gamed gegisters are always calls to intrinsics.
Definition: CGExpr.cpp:1543
void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr, bool PerformInit)
EmitCXXGlobalVarDeclInit - Create the initializer for a C++ variable with global storage.
Definition: CGDeclCXX.cpp:132
bool isGLValue() const
Definition: Expr.h:249
void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, const ConstantArrayType *ArrayTy, Address ArrayPtr, const CXXConstructExpr *E, bool ZeroInitialization=false)
EmitCXXAggrConstructorCall - Emit a loop to call a particular constructor for each of several members...
Definition: CGClass.cpp:1919
static AggValueSlot forAddr(Address addr, Qualifiers quals, IsDestructed_t isDestructed, NeedsGCBarriers_t needsGC, IsAliased_t isAliased, IsZeroed_t isZeroed=IsNotZeroed)
forAddr - Make a slot for an aggregate value.
Definition: CGValue.h:502
RValue EmitAtomicLoad(LValue LV, SourceLocation SL, AggValueSlot Slot=AggValueSlot::ignored())
Definition: CGAtomic.cpp:1304
do v
Definition: arm_acle.h:77
void generateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, GlobalDecl GD, const ThunkInfo &Thunk)
Generate a thunk for the given method.
Definition: CGVTables.cpp:399
llvm::Value * EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:6113
GlobalDecl - represents a global declaration.
Definition: GlobalDecl.h:28
This represents '#pragma omp flush' directive.
Definition: StmtOpenMP.h:1691
This represents '#pragma omp parallel for simd' directive.
Definition: StmtOpenMP.h:1301
DoStmt - This represents a 'do/while' stmt.
Definition: Stmt.h:1080
AsmStmt is the base class for GCCAsmStmt and MSAsmStmt.
Definition: Stmt.h:1392
void EmitDeclStmt(const DeclStmt &S)
Definition: CGStmt.cpp:1012
llvm::Value * EmitAMDGPUBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:6887
llvm::BasicBlock * getEHDispatchBlock(EHScopeStack::stable_iterator scope)
The l-value was considered opaque, so the alignment was determined from a type.
llvm::Value * EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:6647
void EmitAlignmentAssumption(llvm::Value *PtrValue, unsigned Alignment, llvm::Value *OffsetValue=nullptr)
void setBlockContextParameter(const ImplicitParamDecl *D, unsigned argNum, llvm::Value *ptr)
Definition: CGBlocks.cpp:1098
void enterByrefCleanup(const AutoVarEmission &emission)
Enter a cleanup to destroy a __block variable.
Definition: CGBlocks.cpp:2276
void EmitOMPFlushDirective(const OMPFlushDirective &S)
OMPPrivateScope(CodeGenFunction &CGF)
Enter a new OpenMP private scope.
bool HaveInsertPoint() const
HaveInsertPoint - True if an insertion point is defined.
Address recoverAddrOfEscapedLocal(CodeGenFunction &ParentCGF, Address ParentVar, llvm::Value *ParentFP)
Recovers the address of a local in a parent function.
llvm::SmallVector< VPtr, 4 > VPtrsVector
A C++ dynamic_cast expression (C++ [expr.dynamic.cast]).
Definition: ExprCXX.h:274
OpaqueValueExpr - An expression referring to an opaque object of a fixed type and value class...
Definition: Expr.h:840
bool SawAsmBlock
Whether we processed a Microsoft-style asm block during CodeGen.
#define false
Definition: stdbool.h:33
llvm::GlobalVariable * AddInitializerToStaticVarDecl(const VarDecl &D, llvm::GlobalVariable *GV)
AddInitializerToStaticVarDecl - Add the initializer for 'D' to the global variable that has already b...
Definition: CGDecl.cpp:283
Kind
This captures a statement into a function.
Definition: Stmt.h:1984
PseudoObjectExpr - An expression which accesses a pseudo-object l-value.
Definition: Expr.h:4692
LValue EmitVAArgExprLValue(const VAArgExpr *E)
Definition: CGExpr.cpp:3660
ConstExprIterator const_arg_iterator
Definition: Expr.h:2220
llvm::Value * EmitCXXTypeidExpr(const CXXTypeidExpr *E)
Definition: CGExprCXX.cpp:1808
void PushDestructorCleanup(QualType T, Address Addr)
PushDestructorCleanup - Push a cleanup to call the complete-object destructor of an object of the giv...
Definition: CGClass.cpp:2299
ASTContext & getContext() const
void pushDestroy(QualType::DestructionKind dtorKind, Address addr, QualType type)
pushDestroy - Push the standard destructor for the given type as at least a normal cleanup...
Definition: CGDecl.cpp:1445
This represents '#pragma omp single' directive.
Definition: StmtOpenMP.h:1045
Encodes a location in the source.
bool LValueIsSuitableForInlineAtomic(LValue Src)
An LValue is a candidate for having its loads and stores be made atomic if we are operating under /vo...
Definition: CGAtomic.cpp:1284
llvm::Value * EmitObjCArrayLiteral(const ObjCArrayLiteral *E)
Definition: CGObjC.cpp:225
void EnsureInsertPoint()
EnsureInsertPoint - Ensure that an insertion point is defined so that emitted IR has a place to go...
void EmitARCIntrinsicUse(ArrayRef< llvm::Value * > values)
Given a number of pointers, inform the optimizer that they're being intrinsically used up until this ...
Definition: CGObjC.cpp:1791
void EmitOMPForDirective(const OMPForDirective &S)
void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise)
Release the given object.
Definition: CGObjC.cpp:2036
LValue EmitDeclRefLValue(const DeclRefExpr *E)
Definition: CGExpr.cpp:2033
const TemplateArgument * iterator
Definition: Type.h:4070
A saved depth on the scope stack.
Definition: EHScopeStack.h:104
std::pair< RValue, llvm::Value * > EmitAtomicCompareExchange(LValue Obj, RValue Expected, RValue Desired, SourceLocation Loc, llvm::AtomicOrdering Success=llvm::SequentiallyConsistent, llvm::AtomicOrdering Failure=llvm::SequentiallyConsistent, bool IsWeak=false, AggValueSlot Slot=AggValueSlot::ignored())
Emit a compare-and-exchange op for atomic type.
Definition: CGAtomic.cpp:1810
Represents a C++ temporary.
Definition: ExprCXX.h:1075
llvm::Value * EvaluateExprAsBool(const Expr *E)
EvaluateExprAsBool - Perform the usual unary conversions on the specified expression and compare the ...
Definition: CGExpr.cpp:109
LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK)
Same as EmitLValue but additionally we generate checking code to guard against undefined behavior...
Definition: CGExpr.cpp:917
~RunCleanupsScope()
Exit this cleanup scope, emitting any accumulated cleanups.
llvm::Value * EmitFromMemory(llvm::Value *Value, QualType Ty)
EmitFromMemory - Change a scalar value from its memory representation to its value representation...
Definition: CGExpr.cpp:1337
llvm::BasicBlock * getUnreachableBlock()
void setBeforeOutermostConditional(llvm::Value *value, Address addr)
This is a basic class for representing single OpenMP executable directive.
Definition: StmtOpenMP.h:33
llvm::Value * EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty, SourceLocation Loc, AlignmentSource AlignSource=AlignmentSource::Type, llvm::MDNode *TBAAInfo=nullptr, QualType TBAABaseTy=QualType(), uint64_t TBAAOffset=0, bool isNontemporal=false)
EmitLoadOfScalar - Load a scalar value from an address, taking care to appropriately convert from the...
Definition: CGExpr.cpp:1236
void EmitVTableAssumptionLoads(const CXXRecordDecl *ClassDecl, Address This)
Emit assumption load for all bases.
Definition: CGClass.cpp:2139
SmallVector< llvm::Value *, 8 > ObjCEHValueStack
ObjCEHValueStack - Stack of Objective-C exception values, used for rethrows.
Represents a new-expression for memory allocation and constructor calls, e.g: "new CXXNewExpr(foo)"...
Definition: ExprCXX.h:1723
void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S)
Definition: CGObjC.cpp:1458
Represents a call to a member function that may be written either with member call syntax (e...
Definition: ExprCXX.h:124
bool isCleanupPadScope() const
Returns true while emitting a cleanuppad.
bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result)
ConstantFoldsToSimpleInteger - If the specified expression does not fold to a constant, or if it does but contains a label, return false.
LValue EmitAggExprToLValue(const Expr *E)
EmitAggExprToLValue - Emit the computation of the specified expression of aggregate type into a tempo...
Definition: CGExprAgg.cpp:1413
void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, llvm::Instruction *DominatingIP)
DeactivateCleanupBlock - Deactivates the given cleanup block.
Definition: CGCleanup.cpp:1176
void EmitCallAndReturnForThunk(llvm::Value *Callee, const ThunkInfo *Thunk)
Definition: CGVTables.cpp:256
DeclStmt - Adaptor class for mixing declarations with statements and expressions. ...
Definition: Stmt.h:431
Checking the operand of a cast to a base object.
OpenMPDirectiveKind
OpenMP directives.
Definition: OpenMPKinds.h:23
LabelDecl - Represents the declaration of a label.
Definition: Decl.h:355
An aggregate value slot.
Definition: CGValue.h:441
llvm::Constant * createAtExitStub(const VarDecl &VD, llvm::Constant *Dtor, llvm::Constant *Addr)
Create a stub function, suitable for being passed to atexit, which passes the given address to the gi...
Definition: CGDeclCXX.cpp:186
const BlockByrefInfo & getBlockByrefInfo(const VarDecl *var)
BuildByrefInfo - This routine changes a __block variable declared as T x into:
Definition: CGBlocks.cpp:2055
llvm::Value * EmitLifetimeStart(uint64_t Size, llvm::Value *Addr)
Emit a lifetime.begin marker if some criteria are satisfied.
Definition: CGDecl.cpp:913
A scoped helper to set the current debug location to the specified location or preferred location of ...
Definition: CGDebugInfo.h:531
LValue EmitUnsupportedLValue(const Expr *E, const char *Name)
EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue an ErrorUnsupported style ...
Definition: CGExpr.cpp:909
llvm::Value * EmitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:4307
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:1701
static type restore(CodeGenFunction &CGF, saved_type value)
OpenMPLinearClauseKind Modifier
Modifier of 'linear' clause.
Definition: OpenMPClause.h:262
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
This represents '#pragma omp taskwait' directive.
Definition: StmtOpenMP.h:1596
void EmitOMPTaskgroupDirective(const OMPTaskgroupDirective &S)
SanitizerSet SanOpts
Sanitizers enabled for this function.
ObjCCategoryDecl - Represents a category declaration.
Definition: DeclObjC.h:1931
bool isTrivialInitializer(const Expr *Init)
Determine whether the given initializer is trivial in the sense that it requires no code to be genera...
Definition: CGDecl.cpp:1153
AtomicExpr - Variadic atomic builtins: __atomic_exchange, __atomic_fetch_*, __atomic_load, __atomic_store, and __atomic_compare_exchange_*, for the similarly-named C++11 instructions, and __c11 variants for <stdatomic.h>.
Definition: Expr.h:4817
void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType, Address Ptr)
Emits all the code to cause the given temporary to be cleaned up.
Definition: CGCleanup.cpp:1206
llvm::Value * EmitNeonCall(llvm::Function *F, SmallVectorImpl< llvm::Value * > &O, const char *name, unsigned shift=0, bool rightshift=false)
Definition: CGBuiltin.cpp:2163
ObjCProtocolExpr used for protocol expression in Objective-C.
Definition: ExprObjC.h:441
const CodeGenOptions & getCodeGenOpts() const
LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const
bool hasVolatileMember() const
Definition: Decl.h:3241
TypeCheckKind
Situations in which we might emit a check for the suitability of a pointer or glvalue.
void pushCleanupAfterFullExpr(CleanupKind Kind, As...A)
Queue a cleanup to be pushed after finishing the current full-expression.
void EmitOMPSingleDirective(const OMPSingleDirective &S)
An aligned address.
Definition: Address.h:25
void StartFunction(GlobalDecl GD, QualType RetTy, llvm::Function *Fn, const CGFunctionInfo &FnInfo, const FunctionArgList &Args, SourceLocation Loc=SourceLocation(), SourceLocation StartLoc=SourceLocation())
Emit code for the start of a function.
const LangOptions & getLangOpts() const
llvm::BasicBlock * getEHResumeBlock(bool isCleanup)
capture_iterator capture_end() const
Retrieve an iterator pointing past the end of the sequence of captures.
Definition: Stmt.h:2131
This represents '#pragma omp target' directive.
Definition: StmtOpenMP.h:1935
SourceLocation getBegin() const
void EmitOMPForSimdDirective(const OMPForSimdDirective &S)
llvm::Instruction * CurrentFuncletPad
LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E)
Definition: CGExpr.cpp:3917
void EmitOMPAtomicDirective(const OMPAtomicDirective &S)
JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target)
The given basic block lies in the current EH scope, but may be a target of a potentially scope-crossi...
void EmitOMPSectionDirective(const OMPSectionDirective &S)
void EmitOMPSectionsDirective(const OMPSectionsDirective &S)
RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, ReturnValueSlot ReturnValue)
Definition: CGExprCXX.cpp:284
Checking the object expression in a non-static data member access.
This represents '#pragma omp ordered' directive.
Definition: StmtOpenMP.h:1746
void EmitParmDecl(const VarDecl &D, ParamValue Arg, unsigned ArgNo)
EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl.
Definition: CGDecl.cpp:1738
StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}).
Definition: Expr.h:3358
static ParamValue forDirect(llvm::Value *value)
static llvm::Value * restore(CodeGenFunction &CGF, saved_type value)
void EmitForStmt(const ForStmt &S, ArrayRef< const Attr * > Attrs=None)
Definition: CGStmt.cpp:757
ObjCBoxedExpr - used for generalized expression boxing.
Definition: ExprObjC.h:94
void EmitOMPTaskLoopDirective(const OMPTaskLoopDirective &S)
RValue EmitCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue=ReturnValueSlot())
Definition: CGExpr.cpp:3520
RValue EmitBuiltinNewDeleteCall(const FunctionProtoType *Type, const Expr *Arg, bool IsDelete)
Definition: CGExprCXX.cpp:1137
llvm::Value * EmitARCRetain(QualType type, llvm::Value *value)
Produce the code to do a retain.
Definition: CGObjC.cpp:1939
Address EmitMSVAListRef(const Expr *E)
Emit a "reference" to a __builtin_ms_va_list; this is always the value of the expression, because a __builtin_ms_va_list is a pointer to a char.
const CGFunctionInfo * CurFnInfo
void EmitStartEHSpec(const Decl *D)
EmitStartEHSpec - Emit the start of the exception spec.
static ConstantEmission forReference(llvm::Constant *C)
void enterFullExpression(const ExprWithCleanups *E)
void EmitDecl(const Decl &D)
EmitDecl - Emit a declaration.
Definition: CGDecl.cpp:36
static Destroyer destroyARCStrongImprecise
void FinishFunction(SourceLocation EndLoc=SourceLocation())
FinishFunction - Complete IR generation of the current function.
CXXCtorType
C++ constructor types.
Definition: ABI.h:25
void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr)
Produce the code to do a primitive release.
Definition: CGObjC.cpp:2338
CompoundAssignOperator - For compound assignments (e.g.
Definition: Expr.h:3070
void InitializeVTablePointer(const VPtr &vptr)
Initialize the vtable pointer of the given subobject.
Definition: CGClass.cpp:2309
Address EmitVAListRef(const Expr *E)
JumpDest getOMPCancelDestination(OpenMPDirectiveKind Kind)
llvm::Value * EmitScalarExpr(const Expr *E, bool IgnoreResultAssign=false)
EmitScalarExpr - Emit the computation of the specified expression of LLVM scalar type, returning the result.
FunctionArgList - Type for representing both the decl and type of parameters to a function...
Definition: CGCall.h:146
QualType getType() const
Definition: Expr.h:125
llvm::BasicBlock * getMSVCDispatchBlock(EHScopeStack::stable_iterator scope)
void GenerateOpenMPCapturedVars(const CapturedStmt &S, SmallVectorImpl< llvm::Value * > &CapturedVars)
void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S)
Definition: CGObjC.cpp:1757
CGFunctionInfo - Class to encapsulate the information about a function definition.
llvm::Value * EmitNeonRShiftImm(llvm::Value *Vec, llvm::Value *Amt, llvm::Type *Ty, bool usgn, const char *name)
Definition: CGBuiltin.cpp:2184
CharUnits getAlignment() const
Return the alignment of this pointer.
Definition: Address.h:67
Expr * getCommon() const
getCommon - Return the common expression, written to the left of the condition.
Definition: Expr.h:3258
This class organizes the cross-function state that is used while generating LLVM code.
Address getObjectAddress(CodeGenFunction &CGF) const
Returns the address of the object within this declaration.
void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, bool ForVirtualBase, bool Delegating, Address This)
Definition: CGClass.cpp:2269
void EmitOMPTaskyieldDirective(const OMPTaskyieldDirective &S)
void EmitVTablePtrCheckForCast(QualType T, llvm::Value *Derived, bool MayBeNull, CFITypeCheckKind TCK, SourceLocation Loc)
Derived is the presumed address of an object of type T after a cast.
Definition: CGClass.cpp:2501
LValue InitCapturedStruct(const CapturedStmt &S)
Definition: CGStmt.cpp:2085
[C99 6.4.2.2] - A predefined identifier such as func.
Definition: Expr.h:1146
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1121
Address EmitFieldAnnotations(const FieldDecl *D, Address V)
Emit field annotations for the given field & value.
RValue EmitUnsupportedRValue(const Expr *E, const char *Name)
EmitUnsupportedRValue - Emit a dummy r-value using the type of E and issue an ErrorUnsupported style ...
Definition: CGExpr.cpp:903
Represents a delete expression for memory deallocation and destructor calls, e.g. ...
Definition: ExprCXX.h:1927
void GenerateObjCGetter(ObjCImplementationDecl *IMP, const ObjCPropertyImplDecl *PID)
GenerateObjCGetter - Synthesize an Objective-C property getter function.
Definition: CGObjC.cpp:797
bool isZero() const
isZero - Test whether the quantity equals zero.
Definition: CharUnits.h:116
void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr)
Produce the code to do a primitive release.
Definition: CGObjC.cpp:2291
Address CreateMemTemp(QualType T, const Twine &Name="tmp")
CreateMemTemp - Create a temporary memory object of the given type, with appropriate alignment...
Definition: CGExpr.cpp:97
const internal::VariadicAllOfMatcher< Type > type
Matches Types in the clang AST.
Definition: ASTMatchers.h:1723
static AggValueSlot ignored()
ignored - Returns an aggregate value slot indicating that the aggregate value is being ignored...
Definition: CGValue.h:487
CodeGenFunction::ComplexPairTy ComplexPairTy
void EmitOMPParallelForDirective(const OMPParallelForDirective &S)
llvm::Value * EmitARCLoadWeakRetained(Address addr)
i8* @objc_loadWeakRetained(i8** addr)
Definition: CGObjC.cpp:2206
void EmitAnyExprToExn(const Expr *E, Address Addr)
This represents '#pragma omp section' directive.
Definition: StmtOpenMP.h:983
A scope within which we are constructing the fields of an object which might use a CXXDefaultInitExpr...
llvm::Value * EmitAnnotationCall(llvm::Value *AnnotationFn, llvm::Value *AnnotatedVal, StringRef AnnotationStr, SourceLocation Location)
Emit an annotation call (intrinsic or builtin).
llvm::Value * EmitWebAssemblyBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:7272
llvm::LoadInst * CreateAlignedLoad(llvm::Value *Addr, CharUnits Align, const llvm::Twine &Name="")
Definition: CGBuilder.h:99
void EmitOMPPrivateClause(const OMPExecutableDirective &D, OMPPrivateScope &PrivateScope)
Checking the bound value in a reference binding.
LValue EmitCallExprLValue(const CallExpr *E)
Definition: CGExpr.cpp:3646
LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e)
Definition: CGExpr.cpp:4045
This represents '#pragma omp simd' directive.
Definition: StmtOpenMP.h:708
void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, const FunctionArgList &Args)
Definition: CGClass.cpp:2244
void InitializeVTablePointers(const CXXRecordDecl *ClassDecl)
Definition: CGClass.cpp:2427
QualType TypeOfSelfObject()
TypeOfSelfObject - Return type of object that this self represents.
Definition: CGObjC.cpp:1450
Header for data within LifetimeExtendedCleanupStack.
Checking the destination of a store. Must be suitably sized and aligned.
detail::InMemoryDirectory::const_iterator E
A pointer to member type per C++ 8.3.3 - Pointers to members.
Definition: Type.h:2369
void EmitAggregateCopy(Address DestPtr, Address SrcPtr, QualType EltTy, bool isVolatile=false, bool isAssignment=false)
EmitAggregateCopy - Emit an aggregate copy.
Definition: CGExprAgg.cpp:1423
bool EmitOMPFirstprivateClause(const OMPExecutableDirective &D, OMPPrivateScope &PrivateScope)
void EmitOMPCancelDirective(const OMPCancelDirective &S)
llvm::SmallVector< char, 256 > LifetimeExtendedCleanupStack
llvm::StoreInst * CreateStore(llvm::Value *Val, Address Addr, bool IsVolatile=false)
Definition: CGBuilder.h:121
llvm::Constant * GenerateObjCAtomicGetterCopyHelperFunction(const ObjCPropertyImplDecl *PID)
Definition: CGObjC.cpp:2977
CanQualType getCanonicalType(QualType T) const
Return the canonical (structural) type corresponding to the specified potentially non-canonical type ...
Definition: ASTContext.h:1946
bool isSEHTryScope() const
Returns true inside SEH __try blocks.
This represents '#pragma omp atomic' directive.
Definition: StmtOpenMP.h:1801
void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S)
Definition: CGObjC.cpp:1753
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext, providing only those that are of type SpecificDecl (or a class derived from it).
Definition: DeclBase.h:1459
void EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc, llvm::Value *V, QualType Type, CharUnits Alignment=CharUnits::Zero(), bool SkipNullCheck=false)
Emit a check that V is the address of storage of the appropriate size and alignment for an object of ...
Definition: CGExpr.cpp:507
void EmitAggExpr(const Expr *E, AggValueSlot AS)
EmitAggExpr - Emit the computation of the specified expression of aggregate type. ...
Definition: CGExprAgg.cpp:1401
Represents a __leave statement.
Definition: Stmt.h:1950
JumpDest ReturnBlock
ReturnBlock - Unified return block.
llvm::DenseMap< const Decl *, Address > DeclMapTy
Checking the operand of a static_cast to a derived reference type.
static bool hasAggregateEvaluationKind(QualType T)
llvm::Value * EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx)
Definition: CGBuiltin.cpp:2157
SwitchStmt - This represents a 'switch' stmt.
Definition: Stmt.h:938
void EmitAutoVarCleanups(const AutoVarEmission &emission)
Definition: CGDecl.cpp:1370
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2220
API for captured statement code generation.
static saved_type save(CodeGenFunction &CGF, type value)
static bool isObjCMethodWithTypeParams(const T *)
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
Definition: Type.h:3544
llvm::Type * ConvertType(const TypeDecl *T)
const LValue & getOpaqueLValueMapping(const OpaqueValueExpr *e)
getOpaqueLValueMapping - Given an opaque value expression (which must be mapped to an l-value)...
void EmitBlockWithFallThrough(llvm::BasicBlock *BB, const Stmt *S)
When instrumenting to collect profile data, the counts for some blocks such as switch cases need to n...
llvm::Value * vectorWrapScalar16(llvm::Value *Op)
Definition: CGBuiltin.cpp:4298
const T * getAs() const
Member-template getAs<specific type>'.
Definition: Type.h:5675
Checking the operand of a static_cast to a derived pointer type.
ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting.
Definition: Expr.h:2049
Represents Objective-C's collection statement.
Definition: StmtObjC.h:24
AbstractConditionalOperator - An abstract base class for ConditionalOperator and BinaryConditionalOpe...
Definition: Expr.h:3106
OpaqueValueExpr * getOpaqueValue() const
getOpaqueValue - Return the opaque value placeholder.
Definition: Expr.h:3261
void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit)
EmitStoreOfComplex - Store a complex number into the specified l-value.
RValue GetUndefRValue(QualType Ty)
GetUndefRValue - Get an appropriate 'undef' rvalue for the given type.
Definition: CGExpr.cpp:877
Implements C++ ABI-specific code generation functions.
Definition: CGCXXABI.h:43
ObjCEncodeExpr, used for @encode in Objective-C.
Definition: ExprObjC.h:355
LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E, bool Accessed=false)
Definition: CGExpr.cpp:2700
Address EmitCXXMemberDataPointerAddress(const Expr *E, Address base, llvm::Value *memberPtr, const MemberPointerType *memberPtrType, AlignmentSource *AlignSource=nullptr)
Emit the address of a field using a member data pointer.
Definition: CGClass.cpp:128
A stack of loop information corresponding to loop nesting levels.
Definition: CGLoopInfo.h:89
void EmitAsmStmt(const AsmStmt &S)
Definition: CGStmt.cpp:1738
llvm::Value * EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty, bool negateForRightShift)
Definition: CGBuiltin.cpp:2177
This class organizes the cross-module state that is used while lowering AST types to LLVM types...
Definition: CodeGenTypes.h:120
Represents a call to a CUDA kernel function.
Definition: ExprCXX.h:155
RValue EmitRValueForField(LValue LV, const FieldDecl *FD, SourceLocation Loc)
Definition: CGExpr.cpp:3500
void EmitLambdaStaticInvokeFunction(const CXXMethodDecl *MD)
Definition: CGClass.cpp:2783
llvm::AssertingVH< llvm::Instruction > AllocaInsertPt
AllocaInsertPoint - This is an instruction in the entry block before which we prefer to insert alloca...
bool isFunctionType() const
Definition: Type.h:5302
LValue EmitLValueForIvar(QualType ObjectTy, llvm::Value *Base, const ObjCIvarDecl *Ivar, unsigned CVRQualifiers)
Definition: CGExpr.cpp:3732
LValue EmitLoadOfReferenceLValue(Address Ref, const ReferenceType *RefTy)
Definition: CGExpr.cpp:1943
OpenMPScheduleClauseKind
OpenMP attributes for 'schedule' clause.
Definition: OpenMPKinds.h:58
void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue, bool capturedByInit)
Definition: CGDecl.cpp:658
Base for LValueReferenceType and RValueReferenceType.
Definition: Type.h:2287
void EmitSynthesizedCXXCopyCtor(Address Dest, Address Src, const Expr *Exp)
Definition: CGExprCXX.cpp:507
llvm::Value * EmitIvarOffset(const ObjCInterfaceDecl *Interface, const ObjCIvarDecl *Ivar)
Definition: CGExpr.cpp:3727
llvm::Value * EmitARCRetainAutorelease(QualType type, llvm::Value *value)
Do a fused retain/autorelease of the given object.
Definition: CGObjC.cpp:2174
LValue EmitCastLValue(const CastExpr *E)
EmitCastLValue - Casts are never lvalues unless that cast is to a reference type. ...
Definition: CGExpr.cpp:3355
void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false)
EmitBlock - Emit the given block.
Definition: CGStmt.cpp:367
void EmitARCInitWeak(Address addr, llvm::Value *value)
i8* @objc_initWeak(i8** addr, i8* value) Returns value.
Definition: CGObjC.cpp:2226
void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock=false)
void checkTargetFeatures(const CallExpr *E, const FunctionDecl *TargetDecl)
llvm::Value * LoadCXXVTT()
LoadCXXVTT - Load the VTT parameter to base constructors/destructors have virtual bases...
ARCPreciseLifetime_t
Does an ARC strong l-value have precise lifetime?
Definition: CGValue.h:119
ComplexPairTy EmitComplexExpr(const Expr *E, bool IgnoreReal=false, bool IgnoreImag=false)
EmitComplexExpr - Emit the computation of the specified expression of complex type, returning the result.
RValue EmitCXXStructorCall(const CXXMethodDecl *MD, llvm::Value *Callee, ReturnValueSlot ReturnValue, llvm::Value *This, llvm::Value *ImplicitParam, QualType ImplicitParamTy, const CallExpr *E, StructorType Type)
Definition: CGExprCXX.cpp:85
ObjCIvarRefExpr - A reference to an ObjC instance variable.
Definition: ExprObjC.h:479
void EmitFunctionBody(FunctionArgList &Args, const Stmt *Body)
void StartThunk(llvm::Function *Fn, GlobalDecl GD, const CGFunctionInfo &FnInfo)
Definition: CGVTables.cpp:210
LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E)
Definition: CGExpr.cpp:3274
VPtrsVector getVTablePointers(const CXXRecordDecl *VTableClass)
Definition: CGClass.cpp:2359
const Decl * CurFuncDecl
CurFuncDecl - Holds the Decl for the current outermost non-closure context.
void EmitStopPoint(const Stmt *S)
EmitStopPoint - Emit a debug stoppoint if we are emitting debug info.
Definition: CGStmt.cpp:38
GotoStmt - This represents a direct goto.
Definition: Stmt.h:1202
static OpaqueValueMappingData bind(CodeGenFunction &CGF, const OpaqueValueExpr *ov, const Expr *e)
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:11761
llvm::DenseMap< const VarDecl *, llvm::Value * > NRVOFlags
A mapping from NRVO variables to the flags used to indicate when the NRVO has been applied to this va...
MemberExpr - [C99 6.5.2.3] Structure and Union Members.
Definition: Expr.h:2297
void unprotectFromPeepholes(PeepholeProtection protection)
void EmitOMPReductionClauseInit(const OMPExecutableDirective &D, OMPPrivateScope &PrivateScope)
Emit initial code for reduction variables.
A non-RAII class containing all the information about a bound opaque value.
llvm::Value * BuildAppleKextVirtualCall(const CXXMethodDecl *MD, NestedNameSpecifier *Qual, llvm::Type *Ty)
BuildAppleKextVirtualCall - This routine is to support gcc's kext ABI making indirect call to virtual...
Definition: CGCXX.cpp:289
void ErrorUnsupported(const Stmt *S, const char *Type)
ErrorUnsupported - Print out an error that codegen doesn't support the specified stmt yet...
Represents a C++ struct/union/class.
Definition: DeclCXX.h:285
void EmitIfStmt(const IfStmt &S)
Definition: CGStmt.cpp:540
llvm::Value * EmitObjCCollectionLiteral(const Expr *E, const ObjCMethodDecl *MethodWithObjects)
Definition: CGObjC.cpp:113
ContinueStmt - This represents a continue.
Definition: Stmt.h:1280
void EmitBranch(llvm::BasicBlock *Block)
EmitBranch - Emit a branch to the specified basic block from the current insert block, taking care to avoid creation of branches from dummy blocks.
Definition: CGStmt.cpp:387
llvm::PointerIntPair< llvm::Value *, 1, bool > saved_type
llvm::BasicBlock * getInvokeDest()
void EmitReturnStmt(const ReturnStmt &S)
EmitReturnStmt - Note that due to GCC extensions, this can have an operand if the function returns vo...
Definition: CGStmt.cpp:940
llvm::Function * LookupNeonLLVMIntrinsic(unsigned IntrinsicID, unsigned Modifier, llvm::Type *ArgTy, const CallExpr *E)
Definition: CGBuiltin.cpp:2823
BinaryConditionalOperator - The GNU extension to the conditional operator which allows the middle ope...
Definition: Expr.h:3218
llvm::BasicBlock * getTerminateLandingPad()
getTerminateLandingPad - Return a landing pad that just calls terminate.
llvm::Type * ConvertType(QualType T)
void EmitFunctionProlog(const CGFunctionInfo &FI, llvm::Function *Fn, const FunctionArgList &Args)
EmitFunctionProlog - Emit the target specific LLVM code to load the arguments for the given function...
Definition: CGCall.cpp:1813
ObjCIvarDecl - Represents an ObjC instance variable.
Definition: DeclObjC.h:1609
static type restore(CodeGenFunction &CGF, saved_type value)
WhileStmt - This represents a 'while' stmt.
Definition: Stmt.h:1025
void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize)
Takes the old cleanup stack size and emits the cleanup blocks that have been added.
Definition: CGCleanup.cpp:404
void EmitCXXDeleteExpr(const CXXDeleteExpr *E)
Definition: CGExprCXX.cpp:1696
LValue EmitLValue(const Expr *E)
EmitLValue - Emit code to compute a designator that specifies the location of the expression...
Definition: CGExpr.cpp:944
Address ReturnValue
ReturnValue - The temporary alloca to hold the return value.
void EmitTrapCheck(llvm::Value *Checked)
Create a basic block that will call the trap intrinsic, and emit a conditional branch to it...
Definition: CGExpr.cpp:2563
void pushStackRestore(CleanupKind kind, Address SPMem)
Definition: CGDecl.cpp:1461
void EmitLabelStmt(const LabelStmt &S)
Definition: CGStmt.cpp:483
unsigned kind
All of the diagnostics that can be emitted by the frontend.
Definition: DiagnosticIDs.h:43
Represents Objective-C's @try ... @catch ... @finally statement.
Definition: StmtObjC.h:154
llvm::Value * EmitSEHAbnormalTermination()
LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E)
Definition: CGExpr.cpp:3231
bool AutoreleaseResult
In ARC, whether we should autorelease the return value.
RValue EmitLoadOfLValue(LValue V, SourceLocation Loc)
EmitLoadOfLValue - Given an expression that represents a value lvalue, this method emits the address ...
Definition: CGExpr.cpp:1415
void EmitCfiSlowPathCheck(llvm::Value *Cond, llvm::ConstantInt *TypeId, llvm::Value *Ptr)
Emit a slow path cross-DSO CFI check which calls __cfi_slowpath if Cond if false. ...
Definition: CGExpr.cpp:2535
llvm::Value * EmitARCRetainBlock(llvm::Value *value, bool mandatory)
Retain the given block, with _Block_copy semantics.
Definition: CGObjC.cpp:1960
This represents '#pragma omp taskloop simd' directive.
Definition: StmtOpenMP.h:2295
LValue EmitPredefinedLValue(const PredefinedExpr *E)
Definition: CGExpr.cpp:2245
std::pair< llvm::Value *, QualType > getVLASize(const VariableArrayType *vla)
getVLASize - Returns an LLVM value that corresponds to the size, in non-variably-sized elements...
void generateObjCGetterBody(const ObjCImplementationDecl *classImpl, const ObjCPropertyImplDecl *propImpl, const ObjCMethodDecl *GetterMothodDecl, llvm::Constant *AtomicHelperFn)
Definition: CGObjC.cpp:867
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1452
Defines the clang::TargetInfo interface.
void ForceCleanup()
Force the emission of cleanups now, instead of waiting until this object is destroyed.
bool EmitOMPCopyinClause(const OMPExecutableDirective &D)
Emit code for copyin clause in D directive.
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2134
Address EmitCXXUuidofExpr(const CXXUuidofExpr *E)
Definition: CGExpr.cpp:3679
void StartObjCMethod(const ObjCMethodDecl *MD, const ObjCContainerDecl *CD)
StartObjCMethod - Begin emission of an ObjCMethod.
Definition: CGObjC.cpp:518
llvm::MDNode * getTBAAInfo(QualType QTy)
Address EmitExtVectorElementLValue(LValue V)
Generates lvalue for partial ext_vector access.
Definition: CGExpr.cpp:1521
LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E)
void EnterSEHTryStmt(const SEHTryStmt &S)
void startOutlinedSEHHelper(CodeGenFunction &ParentCGF, bool IsFilter, const Stmt *OutlinedStmt)
Arrange a function prototype that can be called by Windows exception handling personalities.
CGCapturedStmtInfo * CapturedStmtInfo
llvm::Value * EmitScalarConversion(llvm::Value *Src, QualType SrcTy, QualType DstTy, SourceLocation Loc)
Emit a conversion from the specified type to the specified destination type, both of which are LLVM s...
RValue EmitLoadOfBitfieldLValue(LValue LV)
Definition: CGExpr.cpp:1461
void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr)
Definition: CGObjC.cpp:2385
This represents '#pragma omp sections' directive.
Definition: StmtOpenMP.h:915
LValue EmitMemberExpr(const MemberExpr *E)
Definition: CGExpr.cpp:3033
Struct with all informations about dynamic [sub]class needed to set vptr.
bool hasVolatileMember(QualType T)
hasVolatileMember - returns true if aggregate type has a volatile member.
stable_iterator getInnermostNormalCleanup() const
Returns the innermost normal cleanup on the stack, or stable_end() if there are no normal cleanups...
Definition: EHScopeStack.h:355
This represents '#pragma omp target data' directive.
Definition: StmtOpenMP.h:1993
A reference to a declared variable, function, enum, etc.
Definition: Expr.h:922
void EmitOMPInnerLoop(const Stmt &S, bool RequiresCleanup, const Expr *LoopCond, const Expr *IncExpr, const llvm::function_ref< void(CodeGenFunction &)> &BodyGen, const llvm::function_ref< void(CodeGenFunction &)> &PostIncGen)
Emit inner loop of the worksharing/simd construct.
RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue)
Definition: CGBlocks.cpp:952
void EmitDestructorBody(FunctionArgList &Args)
EmitDestructorBody - Emits the body of the current destructor.
Definition: CGClass.cpp:1506
bool EmitSimpleStmt(const Stmt *S)
EmitSimpleStmt - Try to emit a "simple" statement which does not necessarily require an insertion poi...
Definition: CGStmt.cpp:271
void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock=false)
This structure provides a set of types that are commonly used during IR emission. ...
BreakStmt - This represents a break.
Definition: Stmt.h:1306
void EmitOMPTargetDataDirective(const OMPTargetDataDirective &S)
void EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr)
Definition: CGDecl.cpp:932
CapturedRegionKind
The different kinds of captured statement.
Definition: CapturedStmt.h:17
void EmitBranchThroughCleanup(JumpDest Dest)
EmitBranchThroughCleanup - Emit a branch from the current insert block through the normal cleanup han...
Definition: CGCleanup.cpp:980
void EmitEndEHSpec(const Decl *D)
EmitEndEHSpec - Emit the end of the exception spec.
llvm::Constant * EmitCheckSourceLocation(SourceLocation Loc)
Emit a description of a source location in a format suitable for passing to a runtime sanitizer handl...
Definition: CGExpr.cpp:2349
Address EmitCompoundStmtWithoutScope(const CompoundStmt &S, bool GetLast=false, AggValueSlot AVS=AggValueSlot::ignored())
Definition: CGStmt.cpp:306
llvm::Value * LoadObjCSelf()
LoadObjCSelf - Load the value of self.
Definition: CGObjC.cpp:1443
#define true
Definition: stdbool.h:32
CodeGenTypes & getTypes() const
A trivial tuple used to represent a source range.
void EmitObjCAtTryStmt(const ObjCAtTryStmt &S)
Definition: CGObjC.cpp:1749
LValue - This represents an lvalue references.
Definition: CGValue.h:152
llvm::BlockAddress * GetAddrOfLabel(const LabelDecl *L)
void EmitWhileStmt(const WhileStmt &S, ArrayRef< const Attr * > Attrs=None)
Definition: CGStmt.cpp:613
This represents '#pragma omp taskyield' directive.
Definition: StmtOpenMP.h:1508
void EmitVarAnnotations(const VarDecl *D, llvm::Value *V)
Emit local annotations for the local variable V, declared by D.
llvm::Value * EmitObjCConsumeObject(QualType T, llvm::Value *Ptr)
Produce the code for a CK_ARCConsumeObject.
Definition: CGObjC.cpp:1776
Represents a C array with a specified size that is not an integer-constant-expression.
Definition: Type.h:2575
This represents '#pragma omp parallel sections' directive.
Definition: StmtOpenMP.h:1369
A Microsoft C++ __uuidof expression, which gets the _GUID that corresponds to the supplied type or ex...
Definition: ExprCXX.h:768
bool CurFuncIsThunk
In C++, whether we are code generating a thunk.
void EmitBlockAfterUses(llvm::BasicBlock *BB)
EmitBlockAfterUses - Emit the given block somewhere hopefully near its uses, and leave the insertion ...
Definition: CGStmt.cpp:404
void EmitBreakStmt(const BreakStmt &S)
Definition: CGStmt.cpp:1022
llvm::Value * emitArrayLength(const ArrayType *arrayType, QualType &baseType, Address &addr)
emitArrayLength - Compute the length of an array, even if it's a VLA, and drill down to the base elem...
RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, const CXXMethodDecl *MD, ReturnValueSlot ReturnValue)
Definition: CGExprCXX.cpp:335
void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S)
Definition: CGObjC.cpp:2851
static bool containsBreak(const Stmt *S)
containsBreak - Return true if the statement contains a break out of it.
Address GetAddressOfBaseClass(Address Value, const CXXRecordDecl *Derived, CastExpr::path_const_iterator PathBegin, CastExpr::path_const_iterator PathEnd, bool NullCheckValue, SourceLocation Loc)
GetAddressOfBaseClass - This function will add the necessary delta to the load of 'this' and returns ...
Definition: CGClass.cpp:264
CallArgList - Type for representing both the value and type of arguments in a call.
Definition: CGCall.h:56
bool requiresLandingPad() const
Definition: EHScopeStack.h:344
OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *opaqueValue, LValue lvalue)
void PopCleanupBlock(bool FallThroughIsBranchThrough=false)
PopCleanupBlock - Will pop the cleanup entry on the stack and process all branch fixups.
Definition: CGCleanup.cpp:586
Represents Objective-C's @autoreleasepool Statement.
Definition: StmtObjC.h:345
Represents the canonical version of C arrays with a specified constant size.
Definition: Type.h:2480
LValue EmitStringLiteralLValue(const StringLiteral *E)
Definition: CGExpr.cpp:2235
void EmitOMPTaskDirective(const OMPTaskDirective &S)
Address emitBlockByrefAddress(Address baseAddr, const VarDecl *V, bool followForward=true)
BuildBlockByrefAddress - Computes the location of the data in a variable which is declared as __block...
Definition: CGBlocks.cpp:2018
CGCalleeInfo - Class to encapsulate the information about a callee to be used during the generation o...
void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint=true)
llvm::Value * EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
EmitTargetBuiltinExpr - Emit the given builtin call.
Definition: CGBuiltin.cpp:2101
void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, Address arrayEndPointer, QualType elementType, CharUnits elementAlignment, Destroyer *destroyer)
pushIrregularPartialArrayCleanup - Push an EH cleanup to destroy already-constructed elements of the ...
Definition: CGDecl.cpp:1673
void EmitNullInitialization(Address DestPtr, QualType Ty)
EmitNullInitialization - Generate code to set a value of the given type to null, If the type contains...
void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags)
Definition: CGBlocks.cpp:2250
llvm::SmallVector< const JumpDest *, 2 > SEHTryEpilogueStack
llvm::Value * EmitSystemZBuiltinExpr(unsigned BuiltinID, const CallExpr *E)
Definition: CGBuiltin.cpp:6972
bool Privatize()
Privatizes local variables previously registered as private.
void EmitMustTailThunk(const CXXMethodDecl *MD, llvm::Value *AdjustedThisPtr, llvm::Value *Callee)
Emit a musttail call for a thunk with a potentially adjusted this pointer.
Definition: CGVTables.cpp:344
Qualifiers getQualifiers() const
Retrieve the set of qualifiers applied to this type.
Definition: Type.h:5116
llvm::Value * EmitObjCSelectorExpr(const ObjCSelectorExpr *E)
Emit a selector.
Definition: CGObjC.cpp:235
void Destroyer(CodeGenFunction &CGF, Address addr, QualType ty)
llvm::Value * BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, CXXDtorType Type, const CXXRecordDecl *RD)
BuildVirtualCall - This routine makes indirect vtable call for call to virtual destructors.
Definition: CGCXX.cpp:310
llvm::Value * EmitObjCProtocolExpr(const ObjCProtocolExpr *E)
Definition: CGObjC.cpp:243
static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts)
getAccessedFieldNo - Given an encoded value and a result number, return the input field number being ...
Definition: CGExpr.cpp:482
This represents '#pragma omp taskloop' directive.
Definition: StmtOpenMP.h:2230