CGCXXABI.h revision 7ca4850a3e3530fa6c93b64b740446e32c97f992
13a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis//===----- CGCXXABI.h - Interface to C++ ABIs -------------------*- C++ -*-===// 23a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// 33a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// The LLVM Compiler Infrastructure 43a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// 53a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// This file is distributed under the University of Illinois Open Source 63a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// License. See LICENSE.TXT for details. 73a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// 83a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis//===----------------------------------------------------------------------===// 93a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// 103a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// This provides an abstract class for C++ code generation. Concrete subclasses 113a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// of this implement code generation for specific C++ ABIs. 123a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis// 133a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis//===----------------------------------------------------------------------===// 143a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis 153a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis#ifndef CLANG_CODEGEN_CXXABI_H 163a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis#define CLANG_CODEGEN_CXXABI_H 173a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis 18d47d3b0cfeb7e8564ff77f48130fe63282b6d127Chris Lattner#include "clang/Basic/LLVM.h" 19d47d3b0cfeb7e8564ff77f48130fe63282b6d127Chris Lattner 204c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall#include "CodeGenFunction.h" 214c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 2293d557bc1867b7d7b102f87290194b4be7932c92John McCallnamespace llvm { 23cf2c85e76fdafe7e634810a292321a6c8322483dJohn McCall class Constant; 240bab0cdab751248ca389a5592bcb70eac5d39260John McCall class Type; 2593d557bc1867b7d7b102f87290194b4be7932c92John McCall class Value; 2693d557bc1867b7d7b102f87290194b4be7932c92John McCall} 2793d557bc1867b7d7b102f87290194b4be7932c92John McCall 283a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davisnamespace clang { 293023def6bea3af6dbb51eea51f8cb8ea892d26cfJohn McCall class CastExpr; 304c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall class CXXConstructorDecl; 314c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall class CXXDestructorDecl; 32875ab10245d3bf37252dd822aa1616bb0a391095John McCall class CXXMethodDecl; 33cf2c85e76fdafe7e634810a292321a6c8322483dJohn McCall class CXXRecordDecl; 340bab0cdab751248ca389a5592bcb70eac5d39260John McCall class FieldDecl; 3514110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne class MangleContext; 3693d557bc1867b7d7b102f87290194b4be7932c92John McCall 373a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davisnamespace CodeGen { 3893d557bc1867b7d7b102f87290194b4be7932c92John McCall class CodeGenFunction; 393a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis class CodeGenModule; 403a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis 413a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis/// Implements C++ ABI-specific code generation functions. 42071cc7deffad608165b1ddd5263e8bf181861520Charles Davisclass CGCXXABI { 43d608cdb7c044365cf4e8764ade1e11e99c176078John McCallprotected: 44d608cdb7c044365cf4e8764ade1e11e99c176078John McCall CodeGenModule &CGM; 456f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<MangleContext> MangleCtx; 46d608cdb7c044365cf4e8764ade1e11e99c176078John McCall 4714110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne CGCXXABI(CodeGenModule &CGM) 4814110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne : CGM(CGM), MangleCtx(CGM.getContext().createMangleContext()) {} 49d608cdb7c044365cf4e8764ade1e11e99c176078John McCall 504c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCallprotected: 514c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall ImplicitParamDecl *&getThisDecl(CodeGenFunction &CGF) { 52cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman return CGF.CXXABIThisDecl; 534c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 544c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *&getThisValue(CodeGenFunction &CGF) { 55cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman return CGF.CXXABIThisValue; 564c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 574c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 584c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall ImplicitParamDecl *&getVTTDecl(CodeGenFunction &CGF) { 594c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return CGF.CXXVTTDecl; 604c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 614c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *&getVTTValue(CodeGenFunction &CGF) { 624c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return CGF.CXXVTTValue; 634c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 644c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 654c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// Build a parameter variable suitable for 'this'. 664c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall void BuildThisParam(CodeGenFunction &CGF, FunctionArgList &Params); 674c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 684c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// Perform prolog initialization of the parameter variable suitable 694c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// for 'this' emitted by BuildThisParam. 704c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall void EmitThisParam(CodeGenFunction &CGF); 714c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 721e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall ASTContext &getContext() const { return CGM.getContext(); } 731e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall 743a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davispublic: 75d608cdb7c044365cf4e8764ade1e11e99c176078John McCall 761af610f8533b8b4a7b0b176aa8082f5b6dde904cAnders Carlsson virtual ~CGCXXABI(); 773a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis 783a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis /// Gets the mangle context. 7914110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne MangleContext &getMangleContext() { 8014110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne return *MangleCtx; 8114110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne } 8293d557bc1867b7d7b102f87290194b4be7932c92John McCall 830bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Find the LLVM type used to represent the given member pointer 840bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// type. 859cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner virtual llvm::Type * 860bab0cdab751248ca389a5592bcb70eac5d39260John McCall ConvertMemberPointerType(const MemberPointerType *MPT); 870bab0cdab751248ca389a5592bcb70eac5d39260John McCall 880bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Load a member function from an object and a member function 890bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// pointer. Apply the this-adjustment and set 'This' to the 900bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// adjusted value. 9193d557bc1867b7d7b102f87290194b4be7932c92John McCall virtual llvm::Value * 9293d557bc1867b7d7b102f87290194b4be7932c92John McCall EmitLoadOfMemberFunctionPointer(CodeGenFunction &CGF, 9393d557bc1867b7d7b102f87290194b4be7932c92John McCall llvm::Value *&This, 9493d557bc1867b7d7b102f87290194b4be7932c92John McCall llvm::Value *MemPtr, 9593d557bc1867b7d7b102f87290194b4be7932c92John McCall const MemberPointerType *MPT); 963023def6bea3af6dbb51eea51f8cb8ea892d26cfJohn McCall 976c2ab1d578c6cc1f3ddcc948532cd625f1092ef2John McCall /// Calculate an l-value from an object and a data member pointer. 986c2ab1d578c6cc1f3ddcc948532cd625f1092ef2John McCall virtual llvm::Value *EmitMemberDataPointerAddress(CodeGenFunction &CGF, 996c2ab1d578c6cc1f3ddcc948532cd625f1092ef2John McCall llvm::Value *Base, 1006c2ab1d578c6cc1f3ddcc948532cd625f1092ef2John McCall llvm::Value *MemPtr, 1016c2ab1d578c6cc1f3ddcc948532cd625f1092ef2John McCall const MemberPointerType *MPT); 1026c2ab1d578c6cc1f3ddcc948532cd625f1092ef2John McCall 1030bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Perform a derived-to-base or base-to-derived member pointer 1040bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// conversion. 1050bab0cdab751248ca389a5592bcb70eac5d39260John McCall virtual llvm::Value *EmitMemberPointerConversion(CodeGenFunction &CGF, 1060bab0cdab751248ca389a5592bcb70eac5d39260John McCall const CastExpr *E, 1070bab0cdab751248ca389a5592bcb70eac5d39260John McCall llvm::Value *Src); 108d608cdb7c044365cf4e8764ade1e11e99c176078John McCall 1090bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Return true if the given member pointer can be zero-initialized 1100bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// (in the C++ sense) with an LLVM zeroinitializer. 111f16aa103d3afd42fbca2ab346f191bf745cec092John McCall virtual bool isZeroInitializable(const MemberPointerType *MPT); 112cf2c85e76fdafe7e634810a292321a6c8322483dJohn McCall 1130bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Create a null member pointer of the given type. 1140bab0cdab751248ca389a5592bcb70eac5d39260John McCall virtual llvm::Constant *EmitNullMemberPointer(const MemberPointerType *MPT); 115cf2c85e76fdafe7e634810a292321a6c8322483dJohn McCall 1160bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Create a member pointer for the given method. 117755d8497e39071aa24acc173ff07083e3256b8f8John McCall virtual llvm::Constant *EmitMemberPointer(const CXXMethodDecl *MD); 118875ab10245d3bf37252dd822aa1616bb0a391095John McCall 1190bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Create a member pointer for the given field. 1205808ce43f8d7e71f5acacc9ca320268c4f37565aJohn McCall virtual llvm::Constant *EmitMemberDataPointer(const MemberPointerType *MPT, 1215808ce43f8d7e71f5acacc9ca320268c4f37565aJohn McCall CharUnits offset); 122e9fd7eb6c67676dc27e84eac429aec4f3be51f26John McCall 1232d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith /// Create a member pointer for the given member pointer constant. 1242d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith virtual llvm::Constant *EmitMemberPointer(const APValue &MP, QualType MPT); 1252d6a5670465cb3f1d811695a9f23e372508240d2Richard Smith 1260bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Emit a comparison between two member pointers. Returns an i1. 127e9fd7eb6c67676dc27e84eac429aec4f3be51f26John McCall virtual llvm::Value * 1280bab0cdab751248ca389a5592bcb70eac5d39260John McCall EmitMemberPointerComparison(CodeGenFunction &CGF, 1290bab0cdab751248ca389a5592bcb70eac5d39260John McCall llvm::Value *L, 1300bab0cdab751248ca389a5592bcb70eac5d39260John McCall llvm::Value *R, 1310bab0cdab751248ca389a5592bcb70eac5d39260John McCall const MemberPointerType *MPT, 1320bab0cdab751248ca389a5592bcb70eac5d39260John McCall bool Inequality); 133e9fd7eb6c67676dc27e84eac429aec4f3be51f26John McCall 1340bab0cdab751248ca389a5592bcb70eac5d39260John McCall /// Determine if a member pointer is non-null. Returns an i1. 135e9fd7eb6c67676dc27e84eac429aec4f3be51f26John McCall virtual llvm::Value * 1360bab0cdab751248ca389a5592bcb70eac5d39260John McCall EmitMemberPointerIsNotNull(CodeGenFunction &CGF, 1370bab0cdab751248ca389a5592bcb70eac5d39260John McCall llvm::Value *MemPtr, 1380bab0cdab751248ca389a5592bcb70eac5d39260John McCall const MemberPointerType *MPT); 1394c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 1404c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// Build the signature of the given constructor variant by adding 1414c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// any required parameters. For convenience, ResTy has been 1424c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// initialized to 'void', and ArgTys has been initialized with the 1434c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// type of 'this' (although this may be changed by the ABI) and 1444c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// will have the formal parameters added to it afterwards. 1454c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// 1464c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// If there are ever any ABIs where the implicit parameters are 1474c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// intermixed with the formal parameters, we can address those 1484c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// then. 1494c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall virtual void BuildConstructorSignature(const CXXConstructorDecl *Ctor, 1504c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall CXXCtorType T, 1514c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall CanQualType &ResTy, 152686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<CanQualType> &ArgTys) = 0; 1534c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 1544c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// Build the signature of the given destructor variant by adding 1554c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// any required parameters. For convenience, ResTy has been 1564c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// initialized to 'void' and ArgTys has been initialized with the 1574c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// type of 'this' (although this may be changed by the ABI). 1584c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall virtual void BuildDestructorSignature(const CXXDestructorDecl *Dtor, 1594c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall CXXDtorType T, 1604c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall CanQualType &ResTy, 161686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<CanQualType> &ArgTys) = 0; 1624c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 1634c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// Build the ABI-specific portion of the parameter list for a 1644c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// function. This generally involves a 'this' parameter and 1654c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// possibly some extra data for constructors and destructors. 1664c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// 1674c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// ABIs may also choose to override the return type, which has been 1684c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// initialized with the formal return type of the function. 1694c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall virtual void BuildInstanceFunctionParams(CodeGenFunction &CGF, 1704c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall QualType &ResTy, 1714c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall FunctionArgList &Params) = 0; 1724c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 1734c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall /// Emit the ABI-specific prolog for the function. 1744c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall virtual void EmitInstanceFunctionProlog(CodeGenFunction &CGF) = 0; 1754c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 1764c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall virtual void EmitReturnFromThunk(CodeGenFunction &CGF, 1774c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall RValue RV, QualType ResultType); 1781e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall 1791e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /**************************** Array cookies ******************************/ 1801e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall 1811e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// Returns the extra size required in order to store the array 1821e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// cookie for the given type. May return 0 to indicate that no 1831e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// array cookie is required. 1841e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// 1851e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// Several cases are filtered out before this method is called: 1861e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// - non-array allocations never need a cookie 1871e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// - calls to ::operator new(size_t, void*) never need a cookie 1881e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// 1891e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param ElementType - the allocated type of the expression, 1901e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// i.e. the pointee type of the expression result type 1916ec278d1a354517e20f13a877481453ee7940c78John McCall virtual CharUnits GetArrayCookieSize(const CXXNewExpr *expr); 1921e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall 1931e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// Initialize the array cookie for the given allocation. 1941e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// 1951e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param NewPtr - a char* which is the presumed-non-null 1961e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// return value of the allocation function 1971e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param NumElements - the computed number of elements, 1981e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// potentially collapsed from the multidimensional array case 1991e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param ElementType - the base element allocated type, 2001e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// i.e. the allocated type after stripping all array types 2011e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall virtual llvm::Value *InitializeArrayCookie(CodeGenFunction &CGF, 2021e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall llvm::Value *NewPtr, 2031e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall llvm::Value *NumElements, 2046ec278d1a354517e20f13a877481453ee7940c78John McCall const CXXNewExpr *expr, 2051e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall QualType ElementType); 2061e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall 2071e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// Reads the array cookie associated with the given pointer, 2081e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// if it has one. 2091e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// 2101e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param Ptr - a pointer to the first element in the array 2111e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param ElementType - the base element type of elements of the array 2121e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param NumElements - an out parameter which will be initialized 2131e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// with the number of elements allocated, or zero if there is no 2141e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// cookie 2151e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param AllocPtr - an out parameter which will be initialized 2161e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// with a char* pointing to the address returned by the allocation 2171e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// function 2181e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// \param CookieSize - an out parameter which will be initialized 2191e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall /// with the size of the cookie, or zero if there is no cookie 2201e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall virtual void ReadArrayCookie(CodeGenFunction &CGF, llvm::Value *Ptr, 2216ec278d1a354517e20f13a877481453ee7940c78John McCall const CXXDeleteExpr *expr, 2221e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall QualType ElementType, llvm::Value *&NumElements, 2231e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall llvm::Value *&AllocPtr, CharUnits &CookieSize); 2241e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall 2255cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall /*************************** Static local guards ****************************/ 2265cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 2273030eb82593097502469a8b3fc26112c79c75605John McCall /// Emits the guarded initializer and destructor setup for the given 2283030eb82593097502469a8b3fc26112c79c75605John McCall /// variable, given that it couldn't be emitted as a constant. 2297ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith /// If \p PerformInit is false, the initialization has been folded to a 2307ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith /// constant and should not be performed. 2313030eb82593097502469a8b3fc26112c79c75605John McCall /// 2323030eb82593097502469a8b3fc26112c79c75605John McCall /// The variable may be: 2333030eb82593097502469a8b3fc26112c79c75605John McCall /// - a static local variable 2343030eb82593097502469a8b3fc26112c79c75605John McCall /// - a static data member of a class template instantiation 2353030eb82593097502469a8b3fc26112c79c75605John McCall virtual void EmitGuardedInit(CodeGenFunction &CGF, const VarDecl &D, 2367ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith llvm::GlobalVariable *DeclPtr, bool PerformInit); 2375cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 2383a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis}; 2393a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis 2403a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis/// Creates an instance of a C++ ABI class. 241ee79a4c30e5d1c5285551c9a25b8ec6d45d46aa7John McCallCGCXXABI *CreateARMCXXABI(CodeGenModule &CGM); 242071cc7deffad608165b1ddd5263e8bf181861520Charles DavisCGCXXABI *CreateItaniumCXXABI(CodeGenModule &CGM); 243071cc7deffad608165b1ddd5263e8bf181861520Charles DavisCGCXXABI *CreateMicrosoftCXXABI(CodeGenModule &CGM); 24493d557bc1867b7d7b102f87290194b4be7932c92John McCall 2453a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis} 2463a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis} 2473a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis 2483a811f1f4286ee3fd0c563c1cfe623956f3caa24Charles Davis#endif 249