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CGCXXABI.h
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1 //===----- CGCXXABI.h - Interface to C++ ABIs -------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This provides an abstract class for C++ code generation. Concrete subclasses
10 // of this implement code generation for specific C++ ABIs.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_LIB_CODEGEN_CGCXXABI_H
15 #define LLVM_CLANG_LIB_CODEGEN_CGCXXABI_H
16 
17 #include "CodeGenFunction.h"
18 #include "clang/Basic/LLVM.h"
20 
21 namespace llvm {
22 class Constant;
23 class Type;
24 class Value;
25 class CallInst;
26 }
27 
28 namespace clang {
29 class CastExpr;
30 class CXXConstructorDecl;
31 class CXXDestructorDecl;
32 class CXXMethodDecl;
33 class CXXRecordDecl;
34 class FieldDecl;
35 class MangleContext;
36 
37 namespace CodeGen {
38 class CGCallee;
39 class CodeGenFunction;
40 class CodeGenModule;
41 struct CatchTypeInfo;
42 
43 /// Implements C++ ABI-specific code generation functions.
44 class CGCXXABI {
45 protected:
47  std::unique_ptr<MangleContext> MangleCtx;
48 
50  : CGM(CGM), MangleCtx(CGM.getContext().createMangleContext()) {}
51 
52 protected:
54  return CGF.CXXABIThisDecl;
55  }
57  return CGF.CXXABIThisValue;
58  }
60  return Address(CGF.CXXABIThisValue, CGF.CXXABIThisAlignment);
61  }
62 
63  /// Issue a diagnostic about unsupported features in the ABI.
64  void ErrorUnsupportedABI(CodeGenFunction &CGF, StringRef S);
65 
66  /// Get a null value for unsupported member pointers.
67  llvm::Constant *GetBogusMemberPointer(QualType T);
68 
70  return CGF.CXXStructorImplicitParamDecl;
71  }
73  return CGF.CXXStructorImplicitParamValue;
74  }
75 
76  /// Loads the incoming C++ this pointer as it was passed by the caller.
78 
79  void setCXXABIThisValue(CodeGenFunction &CGF, llvm::Value *ThisPtr);
80 
81  ASTContext &getContext() const { return CGM.getContext(); }
82 
83  virtual bool requiresArrayCookie(const CXXDeleteExpr *E, QualType eltType);
84  virtual bool requiresArrayCookie(const CXXNewExpr *E);
85 
86  /// Determine whether there's something special about the rules of
87  /// the ABI tell us that 'this' is a complete object within the
88  /// given function. Obvious common logic like being defined on a
89  /// final class will have been taken care of by the caller.
90  virtual bool isThisCompleteObject(GlobalDecl GD) const = 0;
91 
92 public:
93 
94  virtual ~CGCXXABI();
95 
96  /// Gets the mangle context.
98  return *MangleCtx;
99  }
100 
101  /// Returns true if the given constructor or destructor is one of the
102  /// kinds that the ABI says returns 'this' (only applies when called
103  /// non-virtually for destructors).
104  ///
105  /// There currently is no way to indicate if a destructor returns 'this'
106  /// when called virtually, and code generation does not support the case.
107  virtual bool HasThisReturn(GlobalDecl GD) const { return false; }
108 
109  virtual bool hasMostDerivedReturn(GlobalDecl GD) const { return false; }
110 
111  virtual bool useSinitAndSterm() const { return false; }
112 
113  /// Returns true if the target allows calling a function through a pointer
114  /// with a different signature than the actual function (or equivalently,
115  /// bitcasting a function or function pointer to a different function type).
116  /// In principle in the most general case this could depend on the target, the
117  /// calling convention, and the actual types of the arguments and return
118  /// value. Here it just means whether the signature mismatch could *ever* be
119  /// allowed; in other words, does the target do strict checking of signatures
120  /// for all calls.
121  virtual bool canCallMismatchedFunctionType() const { return true; }
122 
123  /// If the C++ ABI requires the given type be returned in a particular way,
124  /// this method sets RetAI and returns true.
125  virtual bool classifyReturnType(CGFunctionInfo &FI) const = 0;
126 
127  /// Specify how one should pass an argument of a record type.
129  /// Pass it using the normal C aggregate rules for the ABI, potentially
130  /// introducing extra copies and passing some or all of it in registers.
132 
133  /// Pass it on the stack using its defined layout. The argument must be
134  /// evaluated directly into the correct stack position in the arguments area,
135  /// and the call machinery must not move it or introduce extra copies.
137 
138  /// Pass it as a pointer to temporary memory.
140  };
141 
142  /// Returns how an argument of the given record type should be passed.
143  virtual RecordArgABI getRecordArgABI(const CXXRecordDecl *RD) const = 0;
144 
145  /// Returns true if the implicit 'sret' parameter comes after the implicit
146  /// 'this' parameter of C++ instance methods.
147  virtual bool isSRetParameterAfterThis() const { return false; }
148 
149  /// Returns true if the ABI permits the argument to be a homogeneous
150  /// aggregate.
151  virtual bool
153  return true;
154  };
155 
156  /// Find the LLVM type used to represent the given member pointer
157  /// type.
158  virtual llvm::Type *
160 
161  /// Load a member function from an object and a member function
162  /// pointer. Apply the this-adjustment and set 'This' to the
163  /// adjusted value.
165  CodeGenFunction &CGF, const Expr *E, Address This,
166  llvm::Value *&ThisPtrForCall, llvm::Value *MemPtr,
167  const MemberPointerType *MPT);
168 
169  /// Calculate an l-value from an object and a data member pointer.
170  virtual llvm::Value *
172  Address Base, llvm::Value *MemPtr,
173  const MemberPointerType *MPT);
174 
175  /// Perform a derived-to-base, base-to-derived, or bitcast member
176  /// pointer conversion.
178  const CastExpr *E,
179  llvm::Value *Src);
180 
181  /// Perform a derived-to-base, base-to-derived, or bitcast member
182  /// pointer conversion on a constant value.
183  virtual llvm::Constant *EmitMemberPointerConversion(const CastExpr *E,
184  llvm::Constant *Src);
185 
186  /// Return true if the given member pointer can be zero-initialized
187  /// (in the C++ sense) with an LLVM zeroinitializer.
188  virtual bool isZeroInitializable(const MemberPointerType *MPT);
189 
190  /// Return whether or not a member pointers type is convertible to an IR type.
191  virtual bool isMemberPointerConvertible(const MemberPointerType *MPT) const {
192  return true;
193  }
194 
195  /// Create a null member pointer of the given type.
196  virtual llvm::Constant *EmitNullMemberPointer(const MemberPointerType *MPT);
197 
198  /// Create a member pointer for the given method.
199  virtual llvm::Constant *EmitMemberFunctionPointer(const CXXMethodDecl *MD);
200 
201  /// Create a member pointer for the given field.
202  virtual llvm::Constant *EmitMemberDataPointer(const MemberPointerType *MPT,
203  CharUnits offset);
204 
205  /// Create a member pointer for the given member pointer constant.
206  virtual llvm::Constant *EmitMemberPointer(const APValue &MP, QualType MPT);
207 
208  /// Emit a comparison between two member pointers. Returns an i1.
209  virtual llvm::Value *
211  llvm::Value *L,
212  llvm::Value *R,
213  const MemberPointerType *MPT,
214  bool Inequality);
215 
216  /// Determine if a member pointer is non-null. Returns an i1.
217  virtual llvm::Value *
219  llvm::Value *MemPtr,
220  const MemberPointerType *MPT);
221 
222 protected:
223  /// A utility method for computing the offset required for the given
224  /// base-to-derived or derived-to-base member-pointer conversion.
225  /// Does not handle virtual conversions (in case we ever fully
226  /// support an ABI that allows this). Returns null if no adjustment
227  /// is required.
228  llvm::Constant *getMemberPointerAdjustment(const CastExpr *E);
229 
230 public:
231  virtual void emitVirtualObjectDelete(CodeGenFunction &CGF,
232  const CXXDeleteExpr *DE,
233  Address Ptr, QualType ElementType,
234  const CXXDestructorDecl *Dtor) = 0;
235  virtual void emitRethrow(CodeGenFunction &CGF, bool isNoReturn) = 0;
236  virtual void emitThrow(CodeGenFunction &CGF, const CXXThrowExpr *E) = 0;
237  virtual llvm::GlobalVariable *getThrowInfo(QualType T) { return nullptr; }
238 
239  /// Determine whether it's possible to emit a vtable for \p RD, even
240  /// though we do not know that the vtable has been marked as used by semantic
241  /// analysis.
242  virtual bool canSpeculativelyEmitVTable(const CXXRecordDecl *RD) const = 0;
243 
244  virtual void emitBeginCatch(CodeGenFunction &CGF, const CXXCatchStmt *C) = 0;
245 
246  virtual llvm::CallInst *
248  llvm::Value *Exn);
249 
250  virtual llvm::Constant *getAddrOfRTTIDescriptor(QualType Ty) = 0;
251  virtual CatchTypeInfo
252  getAddrOfCXXCatchHandlerType(QualType Ty, QualType CatchHandlerType) = 0;
254 
255  virtual bool shouldTypeidBeNullChecked(bool IsDeref,
256  QualType SrcRecordTy) = 0;
257  virtual void EmitBadTypeidCall(CodeGenFunction &CGF) = 0;
258  virtual llvm::Value *EmitTypeid(CodeGenFunction &CGF, QualType SrcRecordTy,
259  Address ThisPtr,
260  llvm::Type *StdTypeInfoPtrTy) = 0;
261 
262  virtual bool shouldDynamicCastCallBeNullChecked(bool SrcIsPtr,
263  QualType SrcRecordTy) = 0;
264 
265  virtual llvm::Value *
267  QualType SrcRecordTy, QualType DestTy,
268  QualType DestRecordTy, llvm::BasicBlock *CastEnd) = 0;
269 
271  Address Value,
272  QualType SrcRecordTy,
273  QualType DestTy) = 0;
274 
275  virtual bool EmitBadCastCall(CodeGenFunction &CGF) = 0;
276 
278  Address This,
279  const CXXRecordDecl *ClassDecl,
280  const CXXRecordDecl *BaseClassDecl) = 0;
281 
282  virtual llvm::BasicBlock *EmitCtorCompleteObjectHandler(CodeGenFunction &CGF,
283  const CXXRecordDecl *RD);
284 
285  /// Emit the code to initialize hidden members required
286  /// to handle virtual inheritance, if needed by the ABI.
287  virtual void
289  const CXXRecordDecl *RD) {}
290 
291  /// Emit constructor variants required by this ABI.
292  virtual void EmitCXXConstructors(const CXXConstructorDecl *D) = 0;
293 
294  /// Additional implicit arguments to add to the beginning (Prefix) and end
295  /// (Suffix) of a constructor / destructor arg list.
296  ///
297  /// Note that Prefix should actually be inserted *after* the first existing
298  /// arg; `this` arguments always come first.
300  struct Arg {
303  };
306  AddedStructorArgs() = default;
308  : Prefix(std::move(P)), Suffix(std::move(S)) {}
310  return {std::move(Args), {}};
311  }
313  return {{}, std::move(Args)};
314  }
315  };
316 
317  /// Similar to AddedStructorArgs, but only notes the number of additional
318  /// arguments.
320  unsigned Prefix = 0;
321  unsigned Suffix = 0;
322  AddedStructorArgCounts() = default;
323  AddedStructorArgCounts(unsigned P, unsigned S) : Prefix(P), Suffix(S) {}
324  static AddedStructorArgCounts prefix(unsigned N) { return {N, 0}; }
325  static AddedStructorArgCounts suffix(unsigned N) { return {0, N}; }
326  };
327 
328  /// Build the signature of the given constructor or destructor variant by
329  /// adding any required parameters. For convenience, ArgTys has been
330  /// initialized with the type of 'this'.
331  virtual AddedStructorArgCounts
333  SmallVectorImpl<CanQualType> &ArgTys) = 0;
334 
335  /// Returns true if the given destructor type should be emitted as a linkonce
336  /// delegating thunk, regardless of whether the dtor is defined in this TU or
337  /// not.
338  virtual bool useThunkForDtorVariant(const CXXDestructorDecl *Dtor,
339  CXXDtorType DT) const = 0;
340 
341  virtual void setCXXDestructorDLLStorage(llvm::GlobalValue *GV,
342  const CXXDestructorDecl *Dtor,
343  CXXDtorType DT) const;
344 
345  virtual llvm::GlobalValue::LinkageTypes
347  CXXDtorType DT) const;
348 
349  /// Emit destructor variants required by this ABI.
350  virtual void EmitCXXDestructors(const CXXDestructorDecl *D) = 0;
351 
352  /// Get the type of the implicit "this" parameter used by a method. May return
353  /// zero if no specific type is applicable, e.g. if the ABI expects the "this"
354  /// parameter to point to some artificial offset in a complete object due to
355  /// vbases being reordered.
356  virtual const CXXRecordDecl *
358  return MD->getParent();
359  }
360 
361  /// Perform ABI-specific "this" argument adjustment required prior to
362  /// a call of a virtual function.
363  /// The "VirtualCall" argument is true iff the call itself is virtual.
364  virtual Address
366  Address This, bool VirtualCall) {
367  return This;
368  }
369 
370  /// Build a parameter variable suitable for 'this'.
371  void buildThisParam(CodeGenFunction &CGF, FunctionArgList &Params);
372 
373  /// Insert any ABI-specific implicit parameters into the parameter list for a
374  /// function. This generally involves extra data for constructors and
375  /// destructors.
376  ///
377  /// ABIs may also choose to override the return type, which has been
378  /// initialized with the type of 'this' if HasThisReturn(CGF.CurGD) is true or
379  /// the formal return type of the function otherwise.
380  virtual void addImplicitStructorParams(CodeGenFunction &CGF, QualType &ResTy,
381  FunctionArgList &Params) = 0;
382 
383  /// Get the ABI-specific "this" parameter adjustment to apply in the prologue
384  /// of a virtual function.
386  return CharUnits::Zero();
387  }
388 
389  /// Emit the ABI-specific prolog for the function.
390  virtual void EmitInstanceFunctionProlog(CodeGenFunction &CGF) = 0;
391 
392  virtual AddedStructorArgs
394  CXXCtorType Type, bool ForVirtualBase,
395  bool Delegating) = 0;
396 
397  /// Add any ABI-specific implicit arguments needed to call a constructor.
398  ///
399  /// \return The number of arguments added at the beginning and end of the
400  /// call, which is typically zero or one.
401  AddedStructorArgCounts
403  CXXCtorType Type, bool ForVirtualBase,
404  bool Delegating, CallArgList &Args);
405 
406  /// Get the implicit (second) parameter that comes after the "this" pointer,
407  /// or nullptr if there is isn't one.
408  virtual llvm::Value *
411  bool ForVirtualBase, bool Delegating) = 0;
412 
413  /// Emit the destructor call.
414  virtual void EmitDestructorCall(CodeGenFunction &CGF,
416  bool ForVirtualBase, bool Delegating,
417  Address This, QualType ThisTy) = 0;
418 
419  /// Emits the VTable definitions required for the given record type.
420  virtual void emitVTableDefinitions(CodeGenVTables &CGVT,
421  const CXXRecordDecl *RD) = 0;
422 
423  /// Checks if ABI requires extra virtual offset for vtable field.
424  virtual bool
426  CodeGenFunction::VPtr Vptr) = 0;
427 
428  /// Checks if ABI requires to initialize vptrs for given dynamic class.
429  virtual bool doStructorsInitializeVPtrs(const CXXRecordDecl *VTableClass) = 0;
430 
431  /// Get the address point of the vtable for the given base subobject.
432  virtual llvm::Constant *
434  const CXXRecordDecl *VTableClass) = 0;
435 
436  /// Get the address point of the vtable for the given base subobject while
437  /// building a constructor or a destructor.
438  virtual llvm::Value *
441  const CXXRecordDecl *NearestVBase) = 0;
442 
443  /// Get the address point of the vtable for the given base subobject while
444  /// building a constexpr.
445  virtual llvm::Constant *
447  const CXXRecordDecl *VTableClass) = 0;
448 
449  /// Get the address of the vtable for the given record decl which should be
450  /// used for the vptr at the given offset in RD.
451  virtual llvm::GlobalVariable *getAddrOfVTable(const CXXRecordDecl *RD,
452  CharUnits VPtrOffset) = 0;
453 
454  /// Build a virtual function pointer in the ABI-specific way.
456  GlobalDecl GD, Address This,
457  llvm::Type *Ty,
458  SourceLocation Loc) = 0;
459 
460  using DeleteOrMemberCallExpr =
461  llvm::PointerUnion<const CXXDeleteExpr *, const CXXMemberCallExpr *>;
462 
463  /// Emit the ABI-specific virtual destructor call.
465  const CXXDestructorDecl *Dtor,
466  CXXDtorType DtorType,
467  Address This,
468  DeleteOrMemberCallExpr E) = 0;
469 
471  GlobalDecl GD,
472  CallArgList &CallArgs) {}
473 
474  /// Emit any tables needed to implement virtual inheritance. For Itanium,
475  /// this emits virtual table tables. For the MSVC++ ABI, this emits virtual
476  /// base tables.
477  virtual void emitVirtualInheritanceTables(const CXXRecordDecl *RD) = 0;
478 
479  virtual bool exportThunk() = 0;
480  virtual void setThunkLinkage(llvm::Function *Thunk, bool ForVTable,
481  GlobalDecl GD, bool ReturnAdjustment) = 0;
482 
484  Address This,
485  const ThisAdjustment &TA) = 0;
486 
488  Address Ret,
489  const ReturnAdjustment &RA) = 0;
490 
491  virtual void EmitReturnFromThunk(CodeGenFunction &CGF,
492  RValue RV, QualType ResultType);
493 
494  virtual size_t getSrcArgforCopyCtor(const CXXConstructorDecl *,
495  FunctionArgList &Args) const = 0;
496 
497  /// Gets the offsets of all the virtual base pointers in a given class.
498  virtual std::vector<CharUnits> getVBPtrOffsets(const CXXRecordDecl *RD);
499 
500  /// Gets the pure virtual member call function.
501  virtual StringRef GetPureVirtualCallName() = 0;
502 
503  /// Gets the deleted virtual member call name.
504  virtual StringRef GetDeletedVirtualCallName() = 0;
505 
506  /**************************** Array cookies ******************************/
507 
508  /// Returns the extra size required in order to store the array
509  /// cookie for the given new-expression. May return 0 to indicate that no
510  /// array cookie is required.
511  ///
512  /// Several cases are filtered out before this method is called:
513  /// - non-array allocations never need a cookie
514  /// - calls to \::operator new(size_t, void*) never need a cookie
515  ///
516  /// \param expr - the new-expression being allocated.
518 
519  /// Initialize the array cookie for the given allocation.
520  ///
521  /// \param NewPtr - a char* which is the presumed-non-null
522  /// return value of the allocation function
523  /// \param NumElements - the computed number of elements,
524  /// potentially collapsed from the multidimensional array case;
525  /// always a size_t
526  /// \param ElementType - the base element allocated type,
527  /// i.e. the allocated type after stripping all array types
529  Address NewPtr,
530  llvm::Value *NumElements,
531  const CXXNewExpr *expr,
532  QualType ElementType);
533 
534  /// Reads the array cookie associated with the given pointer,
535  /// if it has one.
536  ///
537  /// \param Ptr - a pointer to the first element in the array
538  /// \param ElementType - the base element type of elements of the array
539  /// \param NumElements - an out parameter which will be initialized
540  /// with the number of elements allocated, or zero if there is no
541  /// cookie
542  /// \param AllocPtr - an out parameter which will be initialized
543  /// with a char* pointing to the address returned by the allocation
544  /// function
545  /// \param CookieSize - an out parameter which will be initialized
546  /// with the size of the cookie, or zero if there is no cookie
547  virtual void ReadArrayCookie(CodeGenFunction &CGF, Address Ptr,
548  const CXXDeleteExpr *expr,
549  QualType ElementType, llvm::Value *&NumElements,
550  llvm::Value *&AllocPtr, CharUnits &CookieSize);
551 
552  /// Return whether the given global decl needs a VTT parameter.
553  virtual bool NeedsVTTParameter(GlobalDecl GD);
554 
555 protected:
556  /// Returns the extra size required in order to store the array
557  /// cookie for the given type. Assumes that an array cookie is
558  /// required.
559  virtual CharUnits getArrayCookieSizeImpl(QualType elementType);
560 
561  /// Reads the array cookie for an allocation which is known to have one.
562  /// This is called by the standard implementation of ReadArrayCookie.
563  ///
564  /// \param ptr - a pointer to the allocation made for an array, as a char*
565  /// \param cookieSize - the computed cookie size of an array
566  ///
567  /// Other parameters are as above.
568  ///
569  /// \return a size_t
571  CharUnits cookieSize);
572 
573 public:
574 
575  /*************************** Static local guards ****************************/
576 
577  /// Emits the guarded initializer and destructor setup for the given
578  /// variable, given that it couldn't be emitted as a constant.
579  /// If \p PerformInit is false, the initialization has been folded to a
580  /// constant and should not be performed.
581  ///
582  /// The variable may be:
583  /// - a static local variable
584  /// - a static data member of a class template instantiation
585  virtual void EmitGuardedInit(CodeGenFunction &CGF, const VarDecl &D,
586  llvm::GlobalVariable *DeclPtr,
587  bool PerformInit) = 0;
588 
589  /// Emit code to force the execution of a destructor during global
590  /// teardown. The default implementation of this uses atexit.
591  ///
592  /// \param Dtor - a function taking a single pointer argument
593  /// \param Addr - a pointer to pass to the destructor function.
594  virtual void registerGlobalDtor(CodeGenFunction &CGF, const VarDecl &D,
595  llvm::FunctionCallee Dtor,
596  llvm::Constant *Addr) = 0;
597 
598  /*************************** thread_local initialization ********************/
599 
600  /// Emits ABI-required functions necessary to initialize thread_local
601  /// variables in this translation unit.
602  ///
603  /// \param CXXThreadLocals - The thread_local declarations in this translation
604  /// unit.
605  /// \param CXXThreadLocalInits - If this translation unit contains any
606  /// non-constant initialization or non-trivial destruction for
607  /// thread_local variables, a list of functions to perform the
608  /// initialization.
609  virtual void EmitThreadLocalInitFuncs(
610  CodeGenModule &CGM, ArrayRef<const VarDecl *> CXXThreadLocals,
611  ArrayRef<llvm::Function *> CXXThreadLocalInits,
612  ArrayRef<const VarDecl *> CXXThreadLocalInitVars) = 0;
613 
614  // Determine if references to thread_local global variables can be made
615  // directly or require access through a thread wrapper function.
616  virtual bool usesThreadWrapperFunction(const VarDecl *VD) const = 0;
617 
618  /// Emit a reference to a non-local thread_local variable (including
619  /// triggering the initialization of all thread_local variables in its
620  /// translation unit).
622  const VarDecl *VD,
623  QualType LValType) = 0;
624 
625  /// Emit a single constructor/destructor with the given type from a C++
626  /// constructor Decl.
627  virtual void emitCXXStructor(GlobalDecl GD) = 0;
628 
629  /// Load a vtable from This, an object of polymorphic type RD, or from one of
630  /// its virtual bases if it does not have its own vtable. Returns the vtable
631  /// and the class from which the vtable was loaded.
632  virtual std::pair<llvm::Value *, const CXXRecordDecl *>
634  const CXXRecordDecl *RD) = 0;
635 };
636 
637 // Create an instance of a C++ ABI class:
638 
639 /// Creates an Itanium-family ABI.
640 CGCXXABI *CreateItaniumCXXABI(CodeGenModule &CGM);
641 
642 /// Creates a Microsoft-family ABI.
643 CGCXXABI *CreateMicrosoftCXXABI(CodeGenModule &CGM);
644 
646  llvm::CatchPadInst *CPI;
647 
648  CatchRetScope(llvm::CatchPadInst *CPI) : CPI(CPI) {}
649 
650  void Emit(CodeGenFunction &CGF, Flags flags) override {
651  llvm::BasicBlock *BB = CGF.createBasicBlock("catchret.dest");
652  CGF.Builder.CreateCatchRet(CPI, BB);
653  CGF.EmitBlock(BB);
654  }
655 };
656 }
657 }
658 
659 #endif
clang::CodeGen::CGCXXABI::canCallMismatchedFunctionType
virtual bool canCallMismatchedFunctionType() const
Returns true if the target allows calling a function through a pointer with a different signature tha...
Definition: CGCXXABI.h:121
clang::CodeGen::CGCXXABI::ReadArrayCookie
virtual void ReadArrayCookie(CodeGenFunction &CGF, Address Ptr, const CXXDeleteExpr *expr, QualType ElementType, llvm::Value *&NumElements, llvm::Value *&AllocPtr, CharUnits &CookieSize)
Reads the array cookie associated with the given pointer, if it has one.
Definition: CGCXXABI.cpp:204
clang::CodeGen::CreateItaniumCXXABI
CGCXXABI * CreateItaniumCXXABI(CodeGenModule &CGM)
Creates an Itanium-family ABI.
Definition: ItaniumCXXABI.cpp:567
clang::CodeGen::CGCXXABI::getCXXDestructorLinkage
virtual llvm::GlobalValue::LinkageTypes getCXXDestructorLinkage(GVALinkage Linkage, const CXXDestructorDecl *Dtor, CXXDtorType DT) const
Definition: CGCXXABI.cpp:271
llvm
Definition: Dominators.h:30
clang::CXXConstructorDecl
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2401
clang::CodeGen::CGCXXABI::EmitMemberPointerConversion
virtual llvm::Value * EmitMemberPointerConversion(CodeGenFunction &CGF, const CastExpr *E, llvm::Value *Src)
Perform a derived-to-base, base-to-derived, or bitcast member pointer conversion.
Definition: CGCXXABI.cpp:68
clang::CodeGen::CGCXXABI::EmitBadCastCall
virtual bool EmitBadCastCall(CodeGenFunction &CGF)=0
clang::CodeGen::RValue
RValue - This trivial value class is used to represent the result of an expression that is evaluated.
Definition: CGValue.h:39
clang::CodeGen::CGCXXABI::EmitMemberFunctionPointer
virtual llvm::Constant * EmitMemberFunctionPointer(const CXXMethodDecl *MD)
Create a member pointer for the given method.
Definition: CGCXXABI.cpp:103
clang::CodeGen::CGCXXABI::ErrorUnsupportedABI
void ErrorUnsupportedABI(CodeGenFunction &CGF, StringRef S)
Issue a diagnostic about unsupported features in the ABI.
Definition: CGCXXABI.cpp:23
CodeGenFunction.h
clang::CodeGen::CGCXXABI::EmitThreadLocalVarDeclLValue
virtual LValue EmitThreadLocalVarDeclLValue(CodeGenFunction &CGF, const VarDecl *VD, QualType LValType)=0
Emit a reference to a non-local thread_local variable (including triggering the initialization of all...
Ret
static bool Ret(InterpState &S, CodePtr &PC, APValue &Result)
Definition: Interp.cpp:34
clang::CodeGen::CGCXXABI::getAddrOfCXXCatchHandlerType
virtual CatchTypeInfo getAddrOfCXXCatchHandlerType(QualType Ty, QualType CatchHandlerType)=0
clang::CodeGen::CGCXXABI::AddedStructorArgs::Arg
Definition: CGCXXABI.h:300
clang::CodeGen::CGCXXABI::HasThisReturn
virtual bool HasThisReturn(GlobalDecl GD) const
Returns true if the given constructor or destructor is one of the kinds that the ABI says returns 'th...
Definition: CGCXXABI.h:107
clang::CodeGen::CGCXXABI::LoadVTablePtr
virtual std::pair< llvm::Value *, const CXXRecordDecl * > LoadVTablePtr(CodeGenFunction &CGF, Address This, const CXXRecordDecl *RD)=0
Load a vtable from This, an object of polymorphic type RD, or from one of its virtual bases if it doe...
clang::CodeGen::CGCXXABI::RAA_DirectInMemory
@ RAA_DirectInMemory
Pass it on the stack using its defined layout.
Definition: CGCXXABI.h:136
clang::CodeGen::CGCXXABI::emitVirtualObjectDelete
virtual void emitVirtualObjectDelete(CodeGenFunction &CGF, const CXXDeleteExpr *DE, Address Ptr, QualType ElementType, const CXXDestructorDecl *Dtor)=0
clang::CodeGen::CGCXXABI::AddedStructorArgs::AddedStructorArgs
AddedStructorArgs(SmallVector< Arg, 1 > P, SmallVector< Arg, 1 > S)
Definition: CGCXXABI.h:307
llvm::SmallVector
Definition: LLVM.h:38
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:88
clang::CodeGen::CGCXXABI::classifyReturnType
virtual bool classifyReturnType(CGFunctionInfo &FI) const =0
If the C++ ABI requires the given type be returned in a particular way, this method sets RetAI and re...
clang::CodeGen::CGCXXABI::getMangleContext
MangleContext & getMangleContext()
Gets the mangle context.
Definition: CGCXXABI.h:97
clang::CodeGen::CGCXXABI::AddedStructorArgs::Arg::Value
llvm::Value * Value
Definition: CGCXXABI.h:301
clang::CodeGen::CGCXXABI::AddedStructorArgs
Additional implicit arguments to add to the beginning (Prefix) and end (Suffix) of a constructor / de...
Definition: CGCXXABI.h:299
clang::CodeGen::CGCXXABI::EmitGuardedInit
virtual void EmitGuardedInit(CodeGenFunction &CGF, const VarDecl &D, llvm::GlobalVariable *DeclPtr, bool PerformInit)=0
Emits the guarded initializer and destructor setup for the given variable, given that it couldn't be ...
clang::CodeGen::CGCXXABI::NeedsVTTParameter
virtual bool NeedsVTTParameter(GlobalDecl GD)
Return whether the given global decl needs a VTT parameter.
Definition: CGCXXABI.cpp:278
clang::CodeGen::CGCXXABI::InitializeArrayCookie
virtual Address InitializeArrayCookie(CodeGenFunction &CGF, Address NewPtr, llvm::Value *NumElements, const CXXNewExpr *expr, QualType ElementType)
Initialize the array cookie for the given allocation.
Definition: CGCXXABI.cpp:175
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:673
clang::CodeGen::CGCXXABI::MangleCtx
std::unique_ptr< MangleContext > MangleCtx
Definition: CGCXXABI.h:47
clang::GVALinkage
GVALinkage
A more specific kind of linkage than enum Linkage.
Definition: Linkage.h:73
clang::CodeGen::CodeGenModule::getContext
ASTContext & getContext() const
Definition: CodeGenModule.h:702
clang::CodeGen::CGCXXABI::isVirtualOffsetNeededForVTableField
virtual bool isVirtualOffsetNeededForVTableField(CodeGenFunction &CGF, CodeGenFunction::VPtr Vptr)=0
Checks if ABI requires extra virtual offset for vtable field.
clang::CodeGen::CGCXXABI::getMemberPointerAdjustment
llvm::Constant * getMemberPointerAdjustment(const CastExpr *E)
A utility method for computing the offset required for the given base-to-derived or derived-to-base m...
Definition: CGCXXABI.cpp:236
clang::CodeGen::CGCXXABI::setCXXABIThisValue
void setCXXABIThisValue(CodeGenFunction &CGF, llvm::Value *ThisPtr)
Definition: CGCXXABI.cpp:151
clang::CodeGen::CodeGenFunction::createBasicBlock
llvm::BasicBlock * createBasicBlock(const Twine &name="", llvm::Function *parent=nullptr, llvm::BasicBlock *before=nullptr)
createBasicBlock - Create an LLVM basic block.
Definition: CodeGenFunction.h:2394
clang::CXXNewExpr
Represents a new-expression for memory allocation and constructor calls, e.g: "new CXXNewExpr(foo)".
Definition: ExprCXX.h:2139
clang::CodeGen::CGCXXABI::usesThreadWrapperFunction
virtual bool usesThreadWrapperFunction(const VarDecl *VD) const =0
clang::CodeGen::CGCXXABI::isSRetParameterAfterThis
virtual bool isSRetParameterAfterThis() const
Returns true if the implicit 'sret' parameter comes after the implicit 'this' parameter of C++ instan...
Definition: CGCXXABI.h:147
clang::CodeGen::CatchRetScope::CPI
llvm::CatchPadInst * CPI
Definition: CGCXXABI.h:646
clang::CodeGen::CGCXXABI::registerGlobalDtor
virtual void registerGlobalDtor(CodeGenFunction &CGF, const VarDecl &D, llvm::FunctionCallee Dtor, llvm::Constant *Addr)=0
Emit code to force the execution of a destructor during global teardown.
clang::CodeGen::CGCXXABI::emitRethrow
virtual void emitRethrow(CodeGenFunction &CGF, bool isNoReturn)=0
clang::CodeGen::CatchRetScope::CatchRetScope
CatchRetScope(llvm::CatchPadInst *CPI)
Definition: CGCXXABI.h:648
clang::CodeGen::CGCXXABI::EmitTypeid
virtual llvm::Value * EmitTypeid(CodeGenFunction &CGF, QualType SrcRecordTy, Address ThisPtr, llvm::Type *StdTypeInfoPtrTy)=0
clang::CodeGen::CGCXXABI::EmitDestructorCall
virtual void EmitDestructorCall(CodeGenFunction &CGF, const CXXDestructorDecl *DD, CXXDtorType Type, bool ForVirtualBase, bool Delegating, Address This, QualType ThisTy)=0
Emit the destructor call.
clang::CodeGen::EHScopeStack::Cleanup::Flags
Generation flags.
Definition: EHScopeStack.h:156
clang::CodeGen::CodeGenFunction::Builder
CGBuilderTy Builder
Definition: CodeGenFunction.h:274
CodeGenABITypes.h
clang::CodeGen::CGCXXABI::getAddrOfRTTIDescriptor
virtual llvm::Constant * getAddrOfRTTIDescriptor(QualType Ty)=0
clang::Type
The base class of the type hierarchy.
Definition: Type.h:1490
clang::CXXThrowExpr
A C++ throw-expression (C++ [except.throw]).
Definition: ExprCXX.h:1181
clang::GlobalDecl
GlobalDecl - represents a global declaration.
Definition: GlobalDecl.h:55
clang::CodeGen::CGCXXABI::getAddrOfVTable
virtual llvm::GlobalVariable * getAddrOfVTable(const CXXRecordDecl *RD, CharUnits VPtrOffset)=0
Get the address of the vtable for the given record decl which should be used for the vptr at the give...
clang::CodeGen::CGCXXABI::RAA_Default
@ RAA_Default
Pass it using the normal C aggregate rules for the ABI, potentially introducing extra copies and pass...
Definition: CGCXXABI.h:131
clang::CodeGen::CGCXXABI::getCatchAllTypeInfo
virtual CatchTypeInfo getCatchAllTypeInfo()
Definition: CGCXXABI.cpp:289
clang::CodeGen::CGCXXABI::emitVirtualInheritanceTables
virtual void emitVirtualInheritanceTables(const CXXRecordDecl *RD)=0
Emit any tables needed to implement virtual inheritance.
clang::CodeGen::CGCXXABI::readArrayCookieImpl
virtual llvm::Value * readArrayCookieImpl(CodeGenFunction &IGF, Address ptr, CharUnits cookieSize)
Reads the array cookie for an allocation which is known to have one.
Definition: CGCXXABI.cpp:226
clang::CodeGen::CGCXXABI::loadIncomingCXXThis
llvm::Value * loadIncomingCXXThis(CodeGenFunction &CGF)
Loads the incoming C++ this pointer as it was passed by the caller.
Definition: CGCXXABI.cpp:146
clang::CodeGen::CGCXXABI::buildThisParam
void buildThisParam(CodeGenFunction &CGF, FunctionArgList &Params)
Build a parameter variable suitable for 'this'.
Definition: CGCXXABI.cpp:122
clang::CodeGen::CGCXXABI::EmitNullMemberPointer
virtual llvm::Constant * EmitNullMemberPointer(const MemberPointerType *MPT)
Create a null member pointer of the given type.
Definition: CGCXXABI.cpp:99
clang::ast_matchers::expr
const internal::VariadicDynCastAllOfMatcher< Stmt, Expr > expr
Matches expressions.
Definition: ASTMatchersInternal.cpp:889
clang::CodeGen::CGCXXABI::initializeHiddenVirtualInheritanceMembers
virtual void initializeHiddenVirtualInheritanceMembers(CodeGenFunction &CGF, const CXXRecordDecl *RD)
Emit the code to initialize hidden members required to handle virtual inheritance,...
Definition: CGCXXABI.h:288
clang::MangleContext
MangleContext - Context for tracking state which persists across multiple calls to the C++ name mangl...
Definition: Mangle.h:44
clang::CXXCtorType
CXXCtorType
C++ constructor types.
Definition: ABI.h:24
clang::CodeGen::CGCXXABI::EmitMemberPointerComparison
virtual llvm::Value * EmitMemberPointerComparison(CodeGenFunction &CGF, llvm::Value *L, llvm::Value *R, const MemberPointerType *MPT, bool Inequality)
Emit a comparison between two member pointers. Returns an i1.
Definition: CGCXXABI.cpp:81
clang::CodeGen::EHScopeStack::Cleanup
Information for lazily generating a cleanup.
Definition: EHScopeStack.h:141
clang::CodeGen::CGCXXABI::getImplicitConstructorArgs
virtual AddedStructorArgs getImplicitConstructorArgs(CodeGenFunction &CGF, const CXXConstructorDecl *D, CXXCtorType Type, bool ForVirtualBase, bool Delegating)=0
clang::Linkage
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have.
Definition: Linkage.h:23
clang::CodeGen::CGCXXABI::getVTableAddressPoint
virtual llvm::Constant * getVTableAddressPoint(BaseSubobject Base, const CXXRecordDecl *VTableClass)=0
Get the address point of the vtable for the given base subobject.
clang::CodeGen::CGCXXABI::AddedStructorArgs::AddedStructorArgs
AddedStructorArgs()=default
clang::BaseSubobject
Definition: BaseSubobject.h:30
clang::CodeGen::CGCXXABI::EmitMemberDataPointer
virtual llvm::Constant * EmitMemberDataPointer(const MemberPointerType *MPT, CharUnits offset)
Create a member pointer for the given field.
Definition: CGCXXABI.cpp:108
clang::CodeGen::CGCXXABI::addImplicitConstructorArgs
AddedStructorArgCounts addImplicitConstructorArgs(CodeGenFunction &CGF, const CXXConstructorDecl *D, CXXCtorType Type, bool ForVirtualBase, bool Delegating, CallArgList &Args)
Add any ABI-specific implicit arguments needed to call a constructor.
Definition: CGCXXABI.cpp:297
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:212
clang::CXXDtorType
CXXDtorType
C++ destructor types.
Definition: ABI.h:33
clang::CodeGen::CGCXXABI::performReturnAdjustment
virtual llvm::Value * performReturnAdjustment(CodeGenFunction &CGF, Address Ret, const ReturnAdjustment &RA)=0
clang::CodeGen::CGCXXABI::emitThrow
virtual void emitThrow(CodeGenFunction &CGF, const CXXThrowExpr *E)=0
clang::CodeGen::CGCXXABI::isMemberPointerConvertible
virtual bool isMemberPointerConvertible(const MemberPointerType *MPT) const
Return whether or not a member pointers type is convertible to an IR type.
Definition: CGCXXABI.h:191
clang::CodeGen::CGCXXABI::getThrowInfo
virtual llvm::GlobalVariable * getThrowInfo(QualType T)
Definition: CGCXXABI.h:237
clang::CodeGen::CGCXXABI::RecordArgABI
RecordArgABI
Specify how one should pass an argument of a record type.
Definition: CGCXXABI.h:128
clang::CodeGen::CGCXXABI::getVTableAddressPointInStructor
virtual llvm::Value * getVTableAddressPointInStructor(CodeGenFunction &CGF, const CXXRecordDecl *RD, BaseSubobject Base, const CXXRecordDecl *NearestVBase)=0
Get the address point of the vtable for the given base subobject while building a constructor or a de...
clang::CodeGen::CGCXXABI::getThisArgumentTypeForMethod
virtual const CXXRecordDecl * getThisArgumentTypeForMethod(const CXXMethodDecl *MD)
Get the type of the implicit "this" parameter used by a method.
Definition: CGCXXABI.h:357
clang::CodeGen::CGCXXABI::getThisValue
llvm::Value * getThisValue(CodeGenFunction &CGF)
Definition: CGCXXABI.h:56
clang::CodeGen::CGCXXABI::AddedStructorArgCounts::Suffix
unsigned Suffix
Definition: CGCXXABI.h:321
clang::CodeGen::CGCXXABI::AddedStructorArgCounts::AddedStructorArgCounts
AddedStructorArgCounts(unsigned P, unsigned S)
Definition: CGCXXABI.h:323
clang::CodeGen::CGCXXABI::adjustThisArgumentForVirtualFunctionCall
virtual Address adjustThisArgumentForVirtualFunctionCall(CodeGenFunction &CGF, GlobalDecl GD, Address This, bool VirtualCall)
Perform ABI-specific "this" argument adjustment required prior to a call of a virtual function.
Definition: CGCXXABI.h:365
clang::CXXDestructorDecl
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2668
clang::CodeGen::CGCXXABI::performThisAdjustment
virtual llvm::Value * performThisAdjustment(CodeGenFunction &CGF, Address This, const ThisAdjustment &TA)=0
clang::ImplicitParamDecl
Definition: Decl.h:1601
clang::CodeGen::CGCXXABI::getThisAddress
Address getThisAddress(CodeGenFunction &CGF)
Definition: CGCXXABI.h:59
clang::CodeGen::CGCXXABI::AddedStructorArgCounts::suffix
static AddedStructorArgCounts suffix(unsigned N)
Definition: CGCXXABI.h:325
clang::CodeGen::CGCXXABI::EmitBadTypeidCall
virtual void EmitBadTypeidCall(CodeGenFunction &CGF)=0
clang::CodeGen::CGCXXABI::EmitLoadOfMemberFunctionPointer
virtual CGCallee EmitLoadOfMemberFunctionPointer(CodeGenFunction &CGF, const Expr *E, Address This, llvm::Value *&ThisPtrForCall, llvm::Value *MemPtr, const MemberPointerType *MPT)
Load a member function from an object and a member function pointer.
Definition: CGCXXABI.cpp:41
clang::VarDecl
Represents a variable declaration or definition.
Definition: Decl.h:876
clang::CodeGen::CGCXXABI::~CGCXXABI
virtual ~CGCXXABI()
Definition: CGCXXABI.cpp:21
clang::ReturnAdjustment
A return adjustment.
Definition: Thunk.h:26
clang::CodeGen::CGCXXABI::getVBPtrOffsets
virtual std::vector< CharUnits > getVBPtrOffsets(const CXXRecordDecl *RD)
Gets the offsets of all the virtual base pointers in a given class.
Definition: CGCXXABI.cpp:293
clang::CodeGen::CGCXXABI::getVirtualFunctionPointer
virtual CGCallee getVirtualFunctionPointer(CodeGenFunction &CGF, GlobalDecl GD, Address This, llvm::Type *Ty, SourceLocation Loc)=0
Build a virtual function pointer in the ABI-specific way.
clang::CodeGen::CGCXXABI::emitBeginCatch
virtual void emitBeginCatch(CodeGenFunction &CGF, const CXXCatchStmt *C)=0
clang::CodeGen::CGCXXABI::getStructorImplicitParamValue
llvm::Value *& getStructorImplicitParamValue(CodeGenFunction &CGF)
Definition: CGCXXABI.h:72
clang::CharUnits::Zero
static CharUnits Zero()
Zero - Construct a CharUnits quantity of zero.
Definition: CharUnits.h:53
clang::CodeGen::Address
An aligned address.
Definition: Address.h:24
Base
clang::CodeGen::CGCXXABI::AddedStructorArgCounts::AddedStructorArgCounts
AddedStructorArgCounts()=default
clang::CodeGen::CatchRetScope::Emit
void Emit(CodeGenFunction &CGF, Flags flags) override
Emit the cleanup.
Definition: CGCXXABI.h:650
clang::CodeGen::CGCXXABI::GetBogusMemberPointer
llvm::Constant * GetBogusMemberPointer(QualType T)
Get a null value for unsupported member pointers.
Definition: CGCXXABI.cpp:32
clang::CodeGen::CGCXXABI::getRecordArgABI
virtual RecordArgABI getRecordArgABI(const CXXRecordDecl *RD) const =0
Returns how an argument of the given record type should be passed.
clang::CodeGen::CGCXXABI::emitCXXStructor
virtual void emitCXXStructor(GlobalDecl GD)=0
Emit a single constructor/destructor with the given type from a C++ constructor Decl.
clang::CodeGen::CGCXXABI::setCXXDestructorDLLStorage
virtual void setCXXDestructorDLLStorage(llvm::GlobalValue *GV, const CXXDestructorDecl *Dtor, CXXDtorType DT) const
Definition: CGCXXABI.cpp:264
clang::CodeGen::CGCXXABI::emitTerminateForUnexpectedException
virtual llvm::CallInst * emitTerminateForUnexpectedException(CodeGenFunction &CGF, llvm::Value *Exn)
Definition: CGCXXABI.cpp:283
clang::CodeGen::CGCXXABI::isPermittedToBeHomogeneousAggregate
virtual bool isPermittedToBeHomogeneousAggregate(const CXXRecordDecl *RD) const
Returns true if the ABI permits the argument to be a homogeneous aggregate.
Definition: CGCXXABI.h:152
clang::CodeGen::CGCXXABI::useThunkForDtorVariant
virtual bool useThunkForDtorVariant(const CXXDestructorDecl *Dtor, CXXDtorType DT) const =0
Returns true if the given destructor type should be emitted as a linkonce delegating thunk,...
clang::CodeGen::CGCXXABI::EmitMemberPointer
virtual llvm::Constant * EmitMemberPointer(const APValue &MP, QualType MPT)
Create a member pointer for the given member pointer constant.
Definition: CGCXXABI.cpp:113
clang::CodeGen::CGCXXABI::getVTableAddressPointForConstExpr
virtual llvm::Constant * getVTableAddressPointForConstExpr(BaseSubobject Base, const CXXRecordDecl *VTableClass)=0
Get the address point of the vtable for the given base subobject while building a constexpr.
clang::CXXRecordDecl
Represents a C++ struct/union/class.
Definition: DeclCXX.h:255
clang::CodeGen::LValue
LValue - This represents an lvalue references.
Definition: CGValue.h:167
P
StringRef P
Definition: ASTMatchersInternal.cpp:563
clang::CodeGen::CGCXXABI::doStructorsInitializeVPtrs
virtual bool doStructorsInitializeVPtrs(const CXXRecordDecl *VTableClass)=0
Checks if ABI requires to initialize vptrs for given dynamic class.
clang::CodeGen::CGCXXABI::addImplicitStructorParams
virtual void addImplicitStructorParams(CodeGenFunction &CGF, QualType &ResTy, FunctionArgList &Params)=0
Insert any ABI-specific implicit parameters into the parameter list for a function.
clang::CodeGen::CodeGenFunction
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
Definition: CodeGenFunction.h:235
clang::CodeGen::CGCXXABI::RAA_Indirect
@ RAA_Indirect
Pass it as a pointer to temporary memory.
Definition: CGCXXABI.h:139
clang::CodeGen::CGCXXABI::setThunkLinkage
virtual void setThunkLinkage(llvm::Function *Thunk, bool ForVTable, GlobalDecl GD, bool ReturnAdjustment)=0
clang::CodeGen::CGCXXABI::AddedStructorArgCounts
Similar to AddedStructorArgs, but only notes the number of additional arguments.
Definition: CGCXXABI.h:319
clang::CodeGen::CodeGenModule
This class organizes the cross-function state that is used while generating LLVM code.
Definition: CodeGenModule.h:284
clang::CXXDeleteExpr
Represents a delete expression for memory deallocation and destructor calls, e.g.
Definition: ExprCXX.h:2398
llvm::ArrayRef
Definition: LLVM.h:34
Value
Value
Definition: UninitializedValues.cpp:102
clang::CodeGen::CGCXXABI::buildStructorSignature
virtual AddedStructorArgCounts buildStructorSignature(GlobalDecl GD, SmallVectorImpl< CanQualType > &ArgTys)=0
Build the signature of the given constructor or destructor variant by adding any required parameters.
clang::CodeGen::CGCXXABI::requiresArrayCookie
virtual bool requiresArrayCookie(const CXXDeleteExpr *E, QualType eltType)
Definition: CGCXXABI.cpp:185
clang::CodeGen::CGCXXABI::GetDeletedVirtualCallName
virtual StringRef GetDeletedVirtualCallName()=0
Gets the deleted virtual member call name.
clang::CodeGen::CGCallee
All available information about a concrete callee.
Definition: CGCall.h:67
clang::CodeGen::FunctionArgList
FunctionArgList - Type for representing both the decl and type of parameters to a function.
Definition: CGCall.h:358
LLVM.h
clang::CodeGen::CGCXXABI::hasMostDerivedReturn
virtual bool hasMostDerivedReturn(GlobalDecl GD) const
Definition: CGCXXABI.h:109
clang::CodeGen::CGCXXABI::AddedStructorArgs::Suffix
SmallVector< Arg, 1 > Suffix
Definition: CGCXXABI.h:305
clang::CodeGen::CGCXXABI::CGM
CodeGenModule & CGM
Definition: CGCXXABI.h:46
clang::CodeGen::CGCXXABI::EmitReturnFromThunk
virtual void EmitReturnFromThunk(CodeGenFunction &CGF, RValue RV, QualType ResultType)
Definition: CGCXXABI.cpp:157
clang::CodeGen::CGCXXABI::EmitMemberPointerIsNotNull
virtual llvm::Value * EmitMemberPointerIsNotNull(CodeGenFunction &CGF, llvm::Value *MemPtr, const MemberPointerType *MPT)
Determine if a member pointer is non-null. Returns an i1.
Definition: CGCXXABI.cpp:91
clang::CodeGen::CGCXXABI::AddedStructorArgs::prefix
static AddedStructorArgs prefix(SmallVector< Arg, 1 > Args)
Definition: CGCXXABI.h:309
clang::CodeGen::CGCXXABI::shouldTypeidBeNullChecked
virtual bool shouldTypeidBeNullChecked(bool IsDeref, QualType SrcRecordTy)=0
clang::MemberPointerType
A pointer to member type per C++ 8.3.3 - Pointers to members.
Definition: Type.h:2831
clang::CodeGen::CGFunctionInfo
CGFunctionInfo - Class to encapsulate the information about a function definition.
Definition: CGFunctionInfo.h:546
clang::CodeGen::CGCXXABI::ConvertMemberPointerType
virtual llvm::Type * ConvertMemberPointerType(const MemberPointerType *MPT)
Find the LLVM type used to represent the given member pointer type.
Definition: CGCXXABI.cpp:37
clang::CodeGen::CGCXXABI::EmitMemberDataPointerAddress
virtual llvm::Value * EmitMemberDataPointerAddress(CodeGenFunction &CGF, const Expr *E, Address Base, llvm::Value *MemPtr, const MemberPointerType *MPT)
Calculate an l-value from an object and a data member pointer.
Definition: CGCXXABI.cpp:59
std
Definition: Format.h:4034
clang::CodeGen::CGCXXABI::shouldDynamicCastCallBeNullChecked
virtual bool shouldDynamicCastCallBeNullChecked(bool SrcIsPtr, QualType SrcRecordTy)=0
clang::interp::This
bool This(InterpState &S, CodePtr OpPC)
Definition: Interp.h:829
clang::CodeGen::CGCXXABI::getCXXDestructorImplicitParam
virtual llvm::Value * getCXXDestructorImplicitParam(CodeGenFunction &CGF, const CXXDestructorDecl *DD, CXXDtorType Type, bool ForVirtualBase, bool Delegating)=0
Get the implicit (second) parameter that comes after the "this" pointer, or nullptr if there is isn't...
clang::CodeGen::CGCXXABI::EmitDynamicCastToVoid
virtual llvm::Value * EmitDynamicCastToVoid(CodeGenFunction &CGF, Address Value, QualType SrcRecordTy, QualType DestTy)=0
clang
Definition: CalledOnceCheck.h:17
clang::CodeGen::CGCXXABI::EmitCtorCompleteObjectHandler
virtual llvm::BasicBlock * EmitCtorCompleteObjectHandler(CodeGenFunction &CGF, const CXXRecordDecl *RD)
Definition: CGCXXABI.cpp:255
clang::CodeGen::CatchTypeInfo
The MS C++ ABI needs a pointer to RTTI data plus some flags to describe the type of a catch handler,...
Definition: CGCleanup.h:37
clang::CodeGen::CGCXXABI::canSpeculativelyEmitVTable
virtual bool canSpeculativelyEmitVTable(const CXXRecordDecl *RD) const =0
Determine whether it's possible to emit a vtable for RD, even though we do not know that the vtable h...
clang::CXXCatchStmt
CXXCatchStmt - This represents a C++ catch block.
Definition: StmtCXX.h:28
clang::CodeGen::CGCXXABI::EmitCXXConstructors
virtual void EmitCXXConstructors(const CXXConstructorDecl *D)=0
Emit constructor variants required by this ABI.
clang::CodeGen::CGCXXABI::EmitCXXDestructors
virtual void EmitCXXDestructors(const CXXDestructorDecl *D)=0
Emit destructor variants required by this ABI.
clang::CodeGen::CGCXXABI::DeleteOrMemberCallExpr
llvm::PointerUnion< const CXXDeleteExpr *, const CXXMemberCallExpr * > DeleteOrMemberCallExpr
Definition: CGCXXABI.h:461
clang::CodeGen::CGCXXABI::EmitInstanceFunctionProlog
virtual void EmitInstanceFunctionProlog(CodeGenFunction &CGF)=0
Emit the ABI-specific prolog for the function.
clang::CodeGen::CGCXXABI::getVirtualFunctionPrologueThisAdjustment
virtual CharUnits getVirtualFunctionPrologueThisAdjustment(GlobalDecl GD)
Get the ABI-specific "this" parameter adjustment to apply in the prologue of a virtual function.
Definition: CGCXXABI.h:385
clang::CodeGen::CGCXXABI::AddedStructorArgCounts::Prefix
unsigned Prefix
Definition: CGCXXABI.h:320
clang::CodeGen::CGCXXABI::emitVTableDefinitions
virtual void emitVTableDefinitions(CodeGenVTables &CGVT, const CXXRecordDecl *RD)=0
Emits the VTable definitions required for the given record type.
clang::CodeGen::CGCXXABI::GetVirtualBaseClassOffset
virtual llvm::Value * GetVirtualBaseClassOffset(CodeGenFunction &CGF, Address This, const CXXRecordDecl *ClassDecl, const CXXRecordDecl *BaseClassDecl)=0
clang::CodeGen::CodeGenFunction::VPtr
Struct with all information about dynamic [sub]class needed to set vptr.
Definition: CodeGenFunction.h:2231
clang::CodeGen::CodeGenVTables
Definition: CGVTables.h:32
clang::CodeGen::CGCXXABI::useSinitAndSterm
virtual bool useSinitAndSterm() const
Definition: CGCXXABI.h:111
clang::CodeGen::CGCXXABI
Implements C++ ABI-specific code generation functions.
Definition: CGCXXABI.h:44
clang::CodeGen::CGCXXABI::EmitVirtualDestructorCall
virtual llvm::Value * EmitVirtualDestructorCall(CodeGenFunction &CGF, const CXXDestructorDecl *Dtor, CXXDtorType DtorType, Address This, DeleteOrMemberCallExpr E)=0
Emit the ABI-specific virtual destructor call.
clang::CodeGen::CatchRetScope
Definition: CGCXXABI.h:645
clang::CharUnits
CharUnits - This is an opaque type for sizes expressed in character units.
Definition: CharUnits.h:38
clang::APValue
APValue - This class implements a discriminated union of [uninitialized] [APSInt] [APFloat],...
Definition: APValue.h:122
clang::CodeGen::CGCXXABI::getStructorImplicitParamDecl
ImplicitParamDecl *& getStructorImplicitParamDecl(CodeGenFunction &CGF)
Definition: CGCXXABI.h:69
clang::CodeGen::CGCXXABI::AddedStructorArgs::Arg::Type
QualType Type
Definition: CGCXXABI.h:302
llvm::SmallVectorImpl
Definition: LLVM.h:39
clang::Expr
This represents one expression.
Definition: Expr.h:109
clang::CodeGen::CGCXXABI::isThisCompleteObject
virtual bool isThisCompleteObject(GlobalDecl GD) const =0
Determine whether there's something special about the rules of the ABI tell us that 'this' is a compl...
clang::CodeGen::CGCXXABI::adjustCallArgsForDestructorThunk
virtual void adjustCallArgsForDestructorThunk(CodeGenFunction &CGF, GlobalDecl GD, CallArgList &CallArgs)
Definition: CGCXXABI.h:470
clang::CodeGen::CreateMicrosoftCXXABI
CGCXXABI * CreateMicrosoftCXXABI(CodeGenModule &CGM)
Creates a Microsoft-family ABI.
Definition: MicrosoftCXXABI.cpp:3453
clang::ThisAdjustment
A this pointer adjustment.
Definition: Thunk.h:91
clang::CodeGen::CGCXXABI::exportThunk
virtual bool exportThunk()=0
clang::CodeGen::CGCXXABI::getArrayCookieSizeImpl
virtual CharUnits getArrayCookieSizeImpl(QualType elementType)
Returns the extra size required in order to store the array cookie for the given type.
Definition: CGCXXABI.cpp:170
clang::CodeGen::CGCXXABI::CGCXXABI
CGCXXABI(CodeGenModule &CGM)
Definition: CGCXXABI.h:49
clang::CodeGen::CGCXXABI::EmitThreadLocalInitFuncs
virtual void EmitThreadLocalInitFuncs(CodeGenModule &CGM, ArrayRef< const VarDecl * > CXXThreadLocals, ArrayRef< llvm::Function * > CXXThreadLocalInits, ArrayRef< const VarDecl * > CXXThreadLocalInitVars)=0
Emits ABI-required functions necessary to initialize thread_local variables in this translation unit.
clang::CastExpr
CastExpr - Base class for type casts, including both implicit casts (ImplicitCastExpr) and explicit c...
Definition: Expr.h:3473
clang::CodeGen::CGCXXABI::GetPureVirtualCallName
virtual StringRef GetPureVirtualCallName()=0
Gets the pure virtual member call function.
clang::CodeGen::CallArgList
CallArgList - Type for representing both the value and type of arguments in a call.
Definition: CGCall.h:264
clang::CodeGen::CodeGenFunction::EmitBlock
void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false)
EmitBlock - Emit the given block.
Definition: CGStmt.cpp:529
clang::CodeGen::CGCXXABI::isZeroInitializable
virtual bool isZeroInitializable(const MemberPointerType *MPT)
Return true if the given member pointer can be zero-initialized (in the C++ sense) with an LLVM zeroi...
Definition: CGCXXABI.cpp:117
clang::CodeGen::CGCXXABI::AddedStructorArgCounts::prefix
static AddedStructorArgCounts prefix(unsigned N)
Definition: CGCXXABI.h:324
clang::CodeGen::CGCXXABI::GetArrayCookieSize
virtual CharUnits GetArrayCookieSize(const CXXNewExpr *expr)
Returns the extra size required in order to store the array cookie for the given new-expression.
Definition: CGCXXABI.cpp:164
clang::CodeGen::CGCXXABI::EmitDynamicCastCall
virtual llvm::Value * EmitDynamicCastCall(CodeGenFunction &CGF, Address Value, QualType SrcRecordTy, QualType DestTy, QualType DestRecordTy, llvm::BasicBlock *CastEnd)=0
clang::CodeGen::CGCXXABI::getContext
ASTContext & getContext() const
Definition: CGCXXABI.h:81
clang::CodeGen::CGCXXABI::AddedStructorArgs::Prefix
SmallVector< Arg, 1 > Prefix
Definition: CGCXXABI.h:304
clang::CodeGen::CGCXXABI::getThisDecl
ImplicitParamDecl * getThisDecl(CodeGenFunction &CGF)
Definition: CGCXXABI.h:53
clang::CXXMethodDecl::getParent
const CXXRecordDecl * getParent() const
Return the parent of this method declaration, which is the class in which this method is defined.
Definition: DeclCXX.h:2063
clang::CXXMethodDecl
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:1948
clang::CodeGen::CGCXXABI::AddedStructorArgs::suffix
static AddedStructorArgs suffix(SmallVector< Arg, 1 > Args)
Definition: CGCXXABI.h:312
clang::CodeGen::CGCXXABI::getSrcArgforCopyCtor
virtual size_t getSrcArgforCopyCtor(const CXXConstructorDecl *, FunctionArgList &Args) const =0
Type
MatchType Type
Definition: ASTMatchFinder.cpp:70