CodeGenFunction.h revision 777d6e56ad9b1fed9866daf3ee6486d85c5b7d32
1bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar//===-- CodeGenFunction.h - Per-Function state for LLVM CodeGen -*- C++ -*-===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump// This is the internal per-function state used for llvm translation. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14ef52a2fb2ace36c92f88c6e125bd7defa17dafa5Chris Lattner#ifndef CLANG_CODEGEN_CODEGENFUNCTION_H 15ef52a2fb2ace36c92f88c6e125bd7defa17dafa5Chris Lattner#define CLANG_CODEGEN_CODEGENFUNCTION_H 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 17391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner#include "clang/AST/Type.h" 18e3a09e6ad09f8d1387ecaa008aaf85527909da0aArgyrios Kyrtzidis#include "clang/AST/ExprCXX.h" 195549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek#include "clang/AST/ExprObjC.h" 20199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 21f85e193739c953358c865005855253af4f68a497John McCall#include "clang/Frontend/CodeGenOptions.h" 2214110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne#include "clang/Basic/ABI.h" 23481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "clang/Basic/TargetInfo.h" 244c7d9f1507d0f102bd4133bba63348636facd469Jay Foad#include "llvm/ADT/ArrayRef.h" 25481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/DenseMap.h" 26481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/SmallVector.h" 27481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/Support/ValueHandle.h" 2869243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson#include "CodeGenModule.h" 2945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar#include "CGBuilder.h" 308f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CGValue.h" 318f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace llvm { 33c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class BasicBlock; 34f21efe9088a0b3eda1209d1706529f6cb2073092Benjamin Kramer class LLVMContext; 35dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall class MDNode; 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Module; 37898d508d4c9e9d45914952473e39196b20830a9fDaniel Dunbar class SwitchInst; 38259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar class Twine; 39ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar class Value; 40f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class CallSite; 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 448d308384a220c7dc81755c47cdcbdd87dac25d5bDevang Patel class APValue; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class ASTContext; 467267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson class CXXDestructorDecl; 47ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith class CXXForRangeStmt; 486815e941998659a55c20c147861b0f437928c3d8Anders Carlsson class CXXTryStmt; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Decl; 50ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner class LabelDecl; 51c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class EnumConstantDecl; 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class FunctionDecl; 5372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor class FunctionProtoType; 54c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class LabelStmt; 55679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian class ObjCContainerDecl; 5629e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCInterfaceDecl; 5729e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCIvarDecl; 58391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner class ObjCMethodDecl; 59fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian class ObjCImplementationDecl; 60af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar class ObjCPropertyImplDecl; 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class TargetInfo; 62492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall class TargetCodeGenInfo; 63c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class VarDecl; 6416f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCForCollectionStmt; 6516f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtTryStmt; 6616f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtThrowStmt; 6716f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtSynchronizedStmt; 68f85e193739c953358c865005855253af4f68a497John McCall class ObjCAutoreleasePoolStmt; 695549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace CodeGen { 71b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel class CodeGenTypes; 72e896d98548b02223c7740d807a0aa6e20fba7079Anders Carlsson class CGDebugInfo; 73bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar class CGFunctionInfo; 740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump class CGRecordLayout; 75ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall class CGBlockInfo; 764c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall class CGCXXABI; 77d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFlags; 78d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFieldFlags; 790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 80f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A branch fixup. These are required when emitting a goto to a 81f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// label which hasn't been emitted yet. The goto is optimistically 82f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// emitted as a branch to the basic block for the label, and (if it 83f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// occurs in a scope with non-trivial cleanups) a fixup is added to 84f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// the innermost cleanup. When a (normal) cleanup is popped, any 85f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// unresolved fixups in that scope are threaded through the cleanup. 86f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallstruct BranchFixup { 87ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The block containing the terminator which needs to be modified 88ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// into a switch if this fixup is resolved into the current scope. 89ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// If null, LatestBranch points directly to the destination. 90ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *OptimisticBranchBlock; 91f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 92ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The ultimate destination of the branch. 93f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 94f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// This can be set to null to indicate that this fixup was 95f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// successfully resolved. 96f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Destination; 97f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 98ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The destination index value. 99ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned DestinationIndex; 100ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 101ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The initial branch of the fixup. 102ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BranchInst *InitialBranch; 103f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 104f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 105804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct InvariantValue { 106150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T type; 107150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T saved_type; 108150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(type value) { return false; } 109150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, type value) { return value; } 110150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { return value; } 111150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 112804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 113804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A metaprogramming class for ensuring that a value will dominate an 114804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// arbitrary position in a function. 115804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue : InvariantValue<T> {}; 116804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 117804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T, bool mightBeInstruction = 118804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::is_base_of<llvm::Value, T>::value && 119804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::Constant, T>::value && 120804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::BasicBlock, T>::value> 121804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingPointer; 122804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,false> : InvariantValue<T*> {}; 123804b807ea918184d6de63bd745e1ff75a9bfc679John McCall// template <class T> struct DominatingPointer<T,true> at end of file 124804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 125804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue<T*> : DominatingPointer<T> {}; 126150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 127cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCallenum CleanupKind { 128cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall EHCleanup = 0x1, 129cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalCleanup = 0x2, 130cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalAndEHCleanup = EHCleanup | NormalCleanup, 131cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 132cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveCleanup = 0x4, 133cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveEHCleanup = EHCleanup | InactiveCleanup, 134cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalCleanup = NormalCleanup | InactiveCleanup, 135cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup 136cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall}; 137da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 138f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A stack of scopes which respond to exceptions, including cleanups 139f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// and catch blocks. 140f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallclass EHScopeStack { 141f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 142f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A saved depth on the scope stack. This is necessary because 143f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushing scopes onto the stack invalidates iterators. 144f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class stable_iterator { 145f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend class EHScopeStack; 146f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 147f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Offset from StartOfData to EndOfBuffer. 148f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ptrdiff_t Size; 149f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 150f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator(ptrdiff_t Size) : Size(Size) {} 151f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 152f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall public: 153f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator invalid() { return stable_iterator(-1); } 154f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator() : Size(-1) {} 155f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 156f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool isValid() const { return Size >= 0; } 157f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 158838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope encloses I. 159838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false if I is invalid. 160838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 161ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool encloses(stable_iterator I) const { return Size <= I.Size; } 162838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall 163838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope strictly encloses I: that is, 164838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// if it encloses I and is not I. 165838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false is I is invalid. 166838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 167ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } 1681bda662cb37d9fe24be4b3cf8ea0f4e550e1f889John McCall 169f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator==(stable_iterator A, stable_iterator B) { 170f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size == B.Size; 171f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 172f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator!=(stable_iterator A, stable_iterator B) { 173f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size != B.Size; 174f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 175f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 176f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1771f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Information for lazily generating a cleanup. Subclasses must be 1781f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// POD-like: cleanups will not be destructed, and they will be 1791f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// allocated on the cleanup stack and freely copied and moved 1801f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// around. 181da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 1821f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Cleanup implementations should generally be declared in an 183da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// anonymous namespace. 1841f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall class Cleanup { 185c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // Anchor the construction vtable. 186c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall virtual void anchor(); 187da65ea86482bc116906edfb9ba1d7124f76cc867John McCall public: 188ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// Generation flags. 189ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall class Flags { 190ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall enum { 191ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall F_IsForEH = 0x1, 192ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall F_IsNormalCleanupKind = 0x2, 193ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall F_IsEHCleanupKind = 0x4 194ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall }; 195ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall unsigned flags; 196ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 197ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall public: 198ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall Flags() : flags(0) {} 199ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 200ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// isForEH - true if the current emission is for an EH cleanup. 201ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isForEHCleanup() const { return flags & F_IsForEH; } 202ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isForNormalCleanup() const { return !isForEHCleanup(); } 203ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void setIsForEHCleanup() { flags |= F_IsForEH; } 204ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 205ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isNormalCleanupKind() const { return flags & F_IsNormalCleanupKind; } 206ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void setIsNormalCleanupKind() { flags |= F_IsNormalCleanupKind; } 207ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 208ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// isEHCleanupKind - true if the cleanup was pushed as an EH 209ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// cleanup. 210ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isEHCleanupKind() const { return flags & F_IsEHCleanupKind; } 211ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void setIsEHCleanupKind() { flags |= F_IsEHCleanupKind; } 212ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall }; 213ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 214c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // Provide a virtual destructor to suppress a very common warning 215c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // that unfortunately cannot be suppressed without this. Cleanups 216c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // should not rely on this destructor ever being called. 217c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall virtual ~Cleanup() {} 2183e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall 219da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Emit the cleanup. For normal cleanups, this is run in the 220da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// same EH context as when the cleanup was pushed, i.e. the 221da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// immediately-enclosing context of the cleanup scope. For 222da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// EH cleanups, this is run in a terminate context. 223da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 224da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // \param IsForEHCleanup true if this is for an EH cleanup, false 225da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// if for a normal cleanup. 226ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall virtual void Emit(CodeGenFunction &CGF, Flags flags) = 0; 227da65ea86482bc116906edfb9ba1d7124f76cc867John McCall }; 228da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 229150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// ConditionalCleanupN stores the saved form of its N parameters, 230150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// then restores them and performs the cleanup. 2313ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 2323ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup1 : public Cleanup { 233804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 2343ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall A0_saved a0_saved; 2353ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 236ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 237804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 238ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0).Emit(CGF, flags); 2393ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 2403ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 2413ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall public: 2423ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup1(A0_saved a0) 2433ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0) {} 2443ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall }; 2453ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 246150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 2473ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup2 : public Cleanup { 248804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 249804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A1>::saved_type A1_saved; 2504bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A0_saved a0_saved; 2514bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A1_saved a1_saved; 252150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 253ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 254804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 255804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 256ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0, a1).Emit(CGF, flags); 257150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 258150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 259150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 2603ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup2(A0_saved a0, A1_saved a1) 2613ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0), a1_saved(a1) {} 262150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 263150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 264d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor template <class T, class A0, class A1, class A2> 265d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor class ConditionalCleanup3 : public Cleanup { 266d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef typename DominatingValue<A0>::saved_type A0_saved; 267d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef typename DominatingValue<A1>::saved_type A1_saved; 268d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef typename DominatingValue<A2>::saved_type A2_saved; 269d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A0_saved a0_saved; 270d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A1_saved a1_saved; 271d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A2_saved a2_saved; 272d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 273ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 274d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 275d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 276d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); 277ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0, a1, a2).Emit(CGF, flags); 278d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor } 279d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 280d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor public: 281d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor ConditionalCleanup3(A0_saved a0, A1_saved a1, A2_saved a2) 282c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall : a0_saved(a0), a1_saved(a1), a2_saved(a2) {} 283d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor }; 284d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 2859928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall template <class T, class A0, class A1, class A2, class A3> 2869928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall class ConditionalCleanup4 : public Cleanup { 2879928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 2889928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A1>::saved_type A1_saved; 2899928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A2>::saved_type A2_saved; 2909928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A3>::saved_type A3_saved; 2919928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A0_saved a0_saved; 2929928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A1_saved a1_saved; 2939928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A2_saved a2_saved; 2949928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A3_saved a3_saved; 2959928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 296ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 2979928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 2989928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 2999928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); 3009928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A3 a3 = DominatingValue<A3>::restore(CGF, a3_saved); 301ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0, a1, a2, a3).Emit(CGF, flags); 3029928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 3039928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 3049928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall public: 3059928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall ConditionalCleanup4(A0_saved a0, A1_saved a1, A2_saved a2, A3_saved a3) 3069928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall : a0_saved(a0), a1_saved(a1), a2_saved(a2), a3_saved(a3) {} 3079928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall }; 3089928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 309f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallprivate: 310f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // The implementation for this class is in CGException.h and 311f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // CGException.cpp; the definition is here because it's used as a 312f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // member of CodeGenFunction. 313f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 314f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The start of the scope-stack buffer, i.e. the allocated pointer 315f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// for the buffer. All of these pointers are either simultaneously 316f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// null or simultaneously valid. 317f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfBuffer; 318f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 319f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The end of the buffer. 320f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *EndOfBuffer; 321f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 322f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The first valid entry in the buffer. 323f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfData; 324f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 325f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost normal cleanup on the stack. 326f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostNormalCleanup; 327f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 328777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// The innermost EH scope on the stack. 329777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator InnermostEHScope; 330ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 331f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The current set of branch fixups. A branch fixup is a jump to 332f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// an as-yet unemitted label, i.e. a label for which we don't yet 333f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// know the EH stack depth. Whenever we pop a cleanup, we have 334f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to thread all the current branch fixups through it. 335f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 336f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Fixups are recorded as the Use of the respective branch or 337f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// switch statement. The use points to the final destination. 338f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// When popping out of a cleanup, these uses are threaded through 339f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup and adjusted to point to the new cleanup. 340f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 341f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Note that branches are allowed to jump into protected scopes 342f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// in certain situations; e.g. the following code is legal: 343f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// struct A { ~A(); }; // trivial ctor, non-trivial dtor 344f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// goto foo; 345f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A a; 346f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// foo: 347f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// bar(); 348686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<BranchFixup, 8> BranchFixups; 349f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 350f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *allocate(size_t Size); 351f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 3521f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *pushCleanup(CleanupKind K, size_t DataSize); 353da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 354f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 355f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), 356f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostNormalCleanup(stable_end()), 357777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall InnermostEHScope(stable_end()) {} 358f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~EHScopeStack() { delete[] StartOfBuffer; } 359f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 360da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // Variadic templates would make this not terrible. 361da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 362da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 3638e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T> 3641f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind) { 3651f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3661f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(); 3678e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3688e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3698e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3708e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 3718e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T, class A0> 3721f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0) { 3731f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3741f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0); 3758e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3768e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3778e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3788e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 379da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1> 3801f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { 3811f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3821f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1); 383da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 384da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 385da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 386da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 387da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2> 3881f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { 3891f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3901f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2); 391da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 392da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 393da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 394da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 395da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2, class A3> 3961f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { 3971f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3981f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); 399da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 400da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 401da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 40277199713ab56f87ffad9a535ff2a0877704eed87John McCall /// Push a lazily-created cleanup on the stack. 40377199713ab56f87ffad9a535ff2a0877704eed87John McCall template <class T, class A0, class A1, class A2, class A3, class A4> 4041f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { 4051f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 4061f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); 40777199713ab56f87ffad9a535ff2a0877704eed87John McCall (void) Obj; 40877199713ab56f87ffad9a535ff2a0877704eed87John McCall } 40977199713ab56f87ffad9a535ff2a0877704eed87John McCall 4107d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall // Feel free to add more variants of the following: 4117d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 4127d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Push a cleanup with non-constant storage requirements on the 4137d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. The cleanup type must provide an additional static method: 4147d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// static size_t getExtraSize(size_t); 4157d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The argument to this method will be the value N, which will also 4167d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// be passed as the first argument to the constructor. 4177d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 4187d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The data stored in the extra storage must obey the same 4197d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// restrictions as normal cleanup member data. 4207d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 4217d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The pointer returned from this method is valid until the cleanup 4227d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack is modified. 4237d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall template <class T, class A0, class A1, class A2> 4247d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { 4257d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); 4267d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall return new (Buffer) T(N, a0, a1, a2); 4277d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall } 4287d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 429777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// Pops a cleanup scope off the stack. This is private to CGCleanup.cpp. 430f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCleanup(); 431f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 432f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a set of catch handlers on the stack. The catch is 433f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// uninitialized and will need to have the given number of handlers 434f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// set on it. 435f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHCatchScope *pushCatch(unsigned NumHandlers); 436f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 437777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// Pops a catch scope off the stack. This is private to CGException.cpp. 438f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCatch(); 439f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 440f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push an exceptions filter on the stack. 441f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHFilterScope *pushFilter(unsigned NumFilters); 442f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 443f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops an exceptions filter off the stack. 444f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popFilter(); 445f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 446f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a terminate handler on the stack. 447f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void pushTerminate(); 448f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 449f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a terminate handler off the stack. 450f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popTerminate(); 451f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 452f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether the exception-scopes stack is empty. 453f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool empty() const { return StartOfData == EndOfBuffer; } 454f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 455f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool requiresLandingPad() const { 456777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall return InnermostEHScope != stable_end(); 457f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 458f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 459f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any normal cleanups on the stack. 460f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasNormalCleanups() const { 461f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup != stable_end(); 462f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 463f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 464f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost normal cleanup on the stack, or 465f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stable_end() if there are no normal cleanups. 466f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostNormalCleanup() const { 467f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup; 468f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 469777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator getInnermostActiveNormalCleanup() const; 470f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 471777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator getInnermostEHScope() const { 472777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall return InnermostEHScope; 473f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 474f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 475777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator getInnermostActiveEHScope() const; 476f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 477f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// An unstable reference to a scope-stack depth. Invalidated by 478f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushes but not pops. 479f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class iterator; 480f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 481f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the innermost EH scope. 482f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator begin() const; 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 484f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the outermost EH scope. 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator end() const; 486f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 487f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the top of the EH stack. The 488f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// returned reference is valid until that scope is popped off the 489f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stack. 490f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stable_begin() const { 491f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(EndOfBuffer - StartOfData); 492f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 493f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 494f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the bottom of the EH stack. 495f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator stable_end() { 496f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(0); 497f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 498f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 499f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Translates an iterator into a stable_iterator. 500f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stabilize(iterator it) const; 501f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 502f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Turn a stable reference to a scope depth into a unstable pointer 503f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to the EH stack. 504f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator find(stable_iterator save) const; 505f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 506f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Removes the cleanup pointed to by the given stable_iterator. 507f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void removeCleanup(stable_iterator save); 508f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 509f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Add a branch fixup to the current cleanup scope. 510f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &addBranchFixup() { 511f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); 512f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixups.push_back(BranchFixup()); 513f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups.back(); 514f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 515f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 516f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned getNumBranchFixups() const { return BranchFixups.size(); } 517f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &getBranchFixup(unsigned I) { 518f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(I < getNumBranchFixups()); 519f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups[I]; 520f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 521f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 522ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Pops lazily-removed fixups from the end of the list. This 523ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// should only be called by procedures which have just popped a 524ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// cleanup or resolved one or more fixups. 525ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void popNullFixups(); 526ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 527ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Clears the branch-fixups list. This should only be called by 5288abdbd8118e37e759d1ce3f5814ee0a24b1589e8John McCall /// ResolveAllBranchFixups. 529ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void clearFixups() { BranchFixups.clear(); } 530f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 531f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CodeGenFunction - This class organizes the per-function state that is used 5335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// while generating LLVM code. 5345936e33bf74dd6bf126ceee0f6169a2593d03a69John McCallclass CodeGenFunction : public CodeGenTypeCache { 5358a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT 5368a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT 5374c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 5384c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall friend class CGCXXABI; 539bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattnerpublic: 540ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// A jump destination is an abstract label, branching to which may 541ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// require a jump out through normal cleanups. 542f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct JumpDest { 543ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest() : Block(0), ScopeDepth(), Index(0) {} 544ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest(llvm::BasicBlock *Block, 545ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 546ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 547ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 548ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 549ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 550ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 551ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 552ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 5539cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 554ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 555f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Block; 556f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator ScopeDepth; 557ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 558ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall }; 559ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 5605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenModule &CGM; // Per-module state. 561444be7366d0a1e172c0290a1ea54c1cb16b5947cDaniel Dunbar const TargetInfo &Target; 5620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 56358dee10ed2eee34035f62d1c2d32b3639e9182f8Chris Lattner typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; 56445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 5650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 566b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurFuncDecl - Holds the Decl for the current function or ObjC method. 567b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// This excludes BlockDecls. 5684111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner const Decl *CurFuncDecl; 569b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurCodeDecl - This is the inner-most code context, which includes blocks. 570b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner const Decl *CurCodeDecl; 57188b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar const CGFunctionInfo *CurFnInfo; 572391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner QualType FnRetTy; 5735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Function *CurFn; 5745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5756a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump /// CurGD - The GlobalDecl for the current function being compiled. 5766a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump GlobalDecl CurGD; 5776a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump 578f85e193739c953358c865005855253af4f68a497John McCall /// PrologueCleanupDepth - The cleanup depth enclosing all the 579f85e193739c953358c865005855253af4f68a497John McCall /// cleanups associated with the parameters. 580f85e193739c953358c865005855253af4f68a497John McCall EHScopeStack::stable_iterator PrologueCleanupDepth; 581f85e193739c953358c865005855253af4f68a497John McCall 5825ca2084cf9b529563209429857f01fdae9dcdfa5Daniel Dunbar /// ReturnBlock - Unified return block. 583f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ReturnBlock; 584f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ReturnValue - The temporary alloca to hold the return value. This is null 5860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// iff the function has no return value. 587b17daf9ab790ae71aacad2cc4aa11cd8d86c25d1Eli Friedman llvm::Value *ReturnValue; 5880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 5895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AllocaInsertPoint - This is an instruction in the entry block before which 5905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// we prefer to insert allocas. 591481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; 5920ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 5939c276ae0f24d4cee8f7954069d4b8eae45d0447dMike Stump bool CatchUndefined; 5949cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 595f85e193739c953358c865005855253af4f68a497John McCall /// In ARC, whether we should autorelease the return value. 596f85e193739c953358c865005855253af4f68a497John McCall bool AutoreleaseResult; 597f85e193739c953358c865005855253af4f68a497John McCall 598d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const CodeGen::CGBlockInfo *BlockInfo; 599d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *BlockPointer; 600d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 6013d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// \brief A mapping from NRVO variables to the flags used to indicate 6023d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// when the NRVO has been applied to this variable. 6033d91bbcdab155181556969cad6ec97014405acedDouglas Gregor llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; 6049cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 605f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack EHStack; 6060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 607ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// i32s containing the indexes of the cleanup destinations. 608ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *NormalCleanupDest; 609ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 610ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextCleanupDestIndex; 611ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 612777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// EHResumeBlock - Unified block containing a call to llvm.eh.resume. 613777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall llvm::BasicBlock *EHResumeBlock; 614777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall 615f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The exception slot. All landing pads write the current 616f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// exception pointer into this alloca. 617f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *ExceptionSlot; 6180dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 61993c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// The selector slot. Under the MandatoryCleanup model, all 62093c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// landing pads write the current selector value into this alloca. 62193c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::AllocaInst *EHSelectorSlot; 62293c332a8ba2c193c435b293966d343dab15f555bJohn McCall 623f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Emits a landing pad for the current EH stack. 624f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *EmitLandingPad(); 6250dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 626f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDestImpl(); 62799533834ba8f3658559f334e68a518ebb6388ceaMike Stump 6283ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// Set up the last cleaup that was pushed as a conditional 6293ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// full-expression cleanup. 6303ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void initFullExprCleanup(); 631150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 632150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T> 633804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<T>::saved_type saveValueInCond(T value) { 634804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return DominatingValue<T>::save(*this, value); 635150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 636150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 637f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 638f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// ObjCEHValueStack - Stack of Objective-C exception values, used for 639f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// rethrows. 640686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<llvm::Value*, 8> ObjCEHValueStack; 641bb66f9f2e454135b86462d121629275b6ac38e96Anders Carlsson 642d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// A class controlling the emission of a finally block. 643d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall class FinallyInfo { 644d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// Where the catchall's edge through the cleanup should go. 645d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall JumpDest RethrowDest; 646d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 647d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// A function to call to enter the catch. 648d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *BeginCatchFn; 649d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 650d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// An i1 variable indicating whether or not the @finally is 651d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// running for an exception. 652d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::AllocaInst *ForEHVar; 653d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump 654d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// An i8* variable into which the exception pointer to rethrow 655d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// has been saved. 656d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::AllocaInst *SavedExnVar; 657d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 658d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall public: 659d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall void enter(CodeGenFunction &CGF, const Stmt *Finally, 660d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, 661d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *rethrowFn); 662d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall void exit(CodeGenFunction &CGF); 663d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall }; 664f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 665150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 666150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// current full-expression. Safe against the possibility that 667150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// we're currently inside a conditionally-evaluated expression. 6683ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 6693ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0) { 6703ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // If we're not in a conditional branch, or if none of the 6713ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // arguments requires saving, then use the unconditional cleanup. 672c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall if (!isInConditionalBranch()) 673c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall return EHStack.pushCleanup<T>(kind, a0); 6743ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 675804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 6763ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6773ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; 6783ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved); 6793ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 6803ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 6813ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6823ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 6833ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// current full-expression. Safe against the possibility that 6843ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// we're currently inside a conditionally-evaluated expression. 685150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 686150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { 687150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If we're not in a conditional branch, or if none of the 688150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // arguments requires saving, then use the unconditional cleanup. 689c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall if (!isInConditionalBranch()) 690c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall return EHStack.pushCleanup<T>(kind, a0, a1); 691150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 692804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 693804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 694150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 695150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef EHScopeStack::ConditionalCleanup2<T, A0, A1> CleanupType; 6963ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved); 6973ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 698150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 699150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 700d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor /// pushFullExprCleanup - Push a cleanup to be run at the end of the 701d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor /// current full-expression. Safe against the possibility that 702d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor /// we're currently inside a conditionally-evaluated expression. 703d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor template <class T, class A0, class A1, class A2> 704d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2) { 705d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // If we're not in a conditional branch, or if none of the 706d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // arguments requires saving, then use the unconditional cleanup. 707d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor if (!isInConditionalBranch()) { 708c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall return EHStack.pushCleanup<T>(kind, a0, a1, a2); 709d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor } 710d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 711d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 712d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 713d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); 714d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 715d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef EHScopeStack::ConditionalCleanup3<T, A0, A1, A2> CleanupType; 716d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, a2_saved); 717d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor initFullExprCleanup(); 718d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor } 719d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 7209928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 7219928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall /// current full-expression. Safe against the possibility that 7229928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall /// we're currently inside a conditionally-evaluated expression. 7239928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall template <class T, class A0, class A1, class A2, class A3> 7249928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2, A3 a3) { 7259928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // If we're not in a conditional branch, or if none of the 7269928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // arguments requires saving, then use the unconditional cleanup. 7279928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall if (!isInConditionalBranch()) { 7289928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall return EHStack.pushCleanup<T>(kind, a0, a1, a2, a3); 7299928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 7309928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7319928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 7329928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 7339928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); 7349928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A3>::saved_type a3_saved = saveValueInCond(a3); 7359928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7369928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef EHScopeStack::ConditionalCleanup4<T, A0, A1, A2, A3> CleanupType; 7379928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, 7389928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall a2_saved, a3_saved); 7399928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall initFullExprCleanup(); 7409928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 7419928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 742f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 743f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// complete-object destructor of an object of the given type at the 744f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// given address. Does nothing if T is not a C++ class type with a 745f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// non-trivial destructor. 746f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PushDestructorCleanup(QualType T, llvm::Value *Addr); 747f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 74881407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 74981407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// complete-object variant of the given destructor on the object at 75081407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// the given address. 75181407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall void PushDestructorCleanup(const CXXDestructorDecl *Dtor, 75281407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall llvm::Value *Addr); 75381407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall 754f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlock - Will pop the cleanup entry on the stack and 755f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// process all branch fixups. 756ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void PopCleanupBlock(bool FallThroughIsBranchThrough = false); 757f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 7587d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// DeactivateCleanupBlock - Deactivates the given cleanup block. 7597d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The block cannot be reactivated. Pops it if it's the top of the 7607d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. 7617d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 7627d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 7637d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// ActivateCleanupBlock - Activates an initially-inactive cleanup. 7647d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Cannot be used to resurrect a deactivated cleanup. 7657d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 766cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 767f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// \brief Enters a new scope for capturing cleanups, all of which 768f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// will be executed once the scope is exited. 769f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class RunCleanupsScope { 77001234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CodeGenFunction& CGF; 771f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator CleanupStackDepth; 77201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor bool OldDidCallStackSave; 7735656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool PerformCleanup; 77401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 775f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope(const RunCleanupsScope &); // DO NOT IMPLEMENT 776f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope &operator=(const RunCleanupsScope &); // DO NOT IMPLEMENT 77701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 77801234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor public: 77901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Enter a new cleanup scope. 7809cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer explicit RunCleanupsScope(CodeGenFunction &CGF) 7819cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer : CGF(CGF), PerformCleanup(true) 7825656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor { 783f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CleanupStackDepth = CGF.EHStack.stable_begin(); 78401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor OldDidCallStackSave = CGF.DidCallStackSave; 7854ada2ca7d82dab68d3646f3eb6dcdfee072e8ea4Argyrios Kyrtzidis CGF.DidCallStackSave = false; 78601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 78701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 78801234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Exit this cleanup scope, emitting any accumulated 78901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// cleanups. 790f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~RunCleanupsScope() { 7915656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor if (PerformCleanup) { 7925656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 793f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 7945656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7955656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7965656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 7975656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Determine whether this scope requires any cleanups. 7985656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool requiresCleanups() const { 799f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return CGF.EHStack.stable_begin() != CleanupStackDepth; 8005656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 8015656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 8025656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Force the emission of cleanups now, instead of waiting 8035656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// until this object is destroyed. 8045656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor void ForceCleanup() { 8055656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor assert(PerformCleanup && "Already forced cleanup"); 80601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 807f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 8085656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor PerformCleanup = false; 80901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 81001234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor }; 81101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 81244ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 813f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlocks - Takes the old cleanup stack size and emits 814f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup blocks that have been added. 815f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); 81644ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 817ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void ResolveBranchFixups(llvm::BasicBlock *Target); 818ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 819f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 820f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 821f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 822ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { 823413e67778d593215d2f2161a4e712c8568f1ddd0John McCall return JumpDest(Target, 824413e67778d593215d2f2161a4e712c8568f1ddd0John McCall EHStack.getInnermostNormalCleanup(), 825413e67778d593215d2f2161a4e712c8568f1ddd0John McCall NextCleanupDestIndex++); 826f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 827c71c845fe77ee1f891d60232ec320912d88557eeAnders Carlsson 828f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 829f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 830f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 831686775deca8b8685eb90801495880e3abdd844c2Chris Lattner JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) { 832ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall return getJumpDestInCurrentScope(createBasicBlock(Name)); 833f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 834f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 835f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughCleanup - Emit a branch from the current insert 836f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// block through the normal cleanup handling code (if any) and then 837f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// on to \arg Dest. 838f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitBranchThroughCleanup(JumpDest Dest); 839b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner 840b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// isObviouslyBranchWithoutCleanups - Return true if a branch to the 841b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// specified destination obviously has no cleanups to run. 'false' is always 842b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// a conservatively correct answer for this method. 843b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; 844f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 845777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// popCatchScope - Pops the catch scope at the top of the EHScope 846777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// stack, emitting any required code (other than the catch handlers 847777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// themselves). 848777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall void popCatchScope(); 849ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 850777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall llvm::BasicBlock *getEHResumeBlock(); 851777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope); 8520dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 853150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An object to manage conditionally-evaluated expressions. 854150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class ConditionalEvaluation { 855150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *StartBB; 8561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 857150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 858150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation(CodeGenFunction &CGF) 859150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : StartBB(CGF.Builder.GetInsertBlock()) {} 8609cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 861150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void begin(CodeGenFunction &CGF) { 862150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != this); 863150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!CGF.OutermostConditional) 864150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = this; 865150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 866150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 867150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void end(CodeGenFunction &CGF) { 868150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != 0); 869150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (CGF.OutermostConditional == this) 870150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 871150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 872150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 873150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Returns a block which will be executed prior to each 874150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// evaluation of the conditional code. 875150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *getStartingBlock() const { 876150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return StartBB; 877150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 878150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 8791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8803019c444c672938c57f5573840071ecd73425ee7John McCall /// isInConditionalBranch - Return true if we're currently emitting 8813019c444c672938c57f5573840071ecd73425ee7John McCall /// one branch or the other of a conditional expression. 882150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall bool isInConditionalBranch() const { return OutermostConditional != 0; } 883150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 884150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An RAII object to record that we're evaluating a statement 885150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// expression. 886150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class StmtExprEvaluation { 887150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CodeGenFunction &CGF; 888150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 889150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// We have to save the outermost conditional: cleanups in a 890150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// statement expression aren't conditional just because the 891150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// StmtExpr is. 892150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *SavedOutermostConditional; 893150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 894150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 895150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall StmtExprEvaluation(CodeGenFunction &CGF) 896150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { 897150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 898150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 899150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 900150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ~StmtExprEvaluation() { 901150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = SavedOutermostConditional; 902150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.EnsureInsertPoint(); 903150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 904150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 905e996ffd240f20a1048179d7727a6ee3227261921John McCall 90656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// An object which temporarily prevents a value from being 90756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// destroyed by aggressive peephole optimizations that assume that 90856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// all uses of a value have been realized in the IR. 90956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall class PeepholeProtection { 91056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::Instruction *Inst; 91156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class CodeGenFunction; 91256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 91356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall public: 91456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection() : Inst(0) {} 91556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall }; 91656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 917e996ffd240f20a1048179d7727a6ee3227261921John McCall /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. 918e996ffd240f20a1048179d7727a6ee3227261921John McCall class OpaqueValueMapping { 919e996ffd240f20a1048179d7727a6ee3227261921John McCall CodeGenFunction &CGF; 920e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *OpaqueValue; 92156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall bool BoundLValue; 92256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CodeGenFunction::PeepholeProtection Protection; 923e996ffd240f20a1048179d7727a6ee3227261921John McCall 924e996ffd240f20a1048179d7727a6ee3227261921John McCall public: 92556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool shouldBindAsLValue(const Expr *expr) { 92656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return expr->isGLValue() || expr->getType()->isRecordType(); 92756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 92856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 92956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Build the opaque value mapping for the given conditional 93056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// operator if it's the GNU ?: extension. This is a common 93156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// enough pattern that the convenience operator is really 93256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// helpful. 93356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 93456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 93556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *op) : CGF(CGF) { 93656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (isa<ConditionalOperator>(op)) { 93756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue = 0; 93856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BoundLValue = false; 93956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return; 94056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 94156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 94256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); 94356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall init(e->getOpaqueValue(), e->getCommon()); 94456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 94556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 946e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValueMapping(CodeGenFunction &CGF, 947e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *opaqueValue, 94856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue lvalue) 94956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : CGF(CGF), OpaqueValue(opaqueValue), BoundLValue(true) { 950e996ffd240f20a1048179d7727a6ee3227261921John McCall assert(opaqueValue && "no opaque value expression!"); 95156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(shouldBindAsLValue(opaqueValue)); 95256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initLValue(lvalue); 95356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 95456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 95556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 95656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const OpaqueValueExpr *opaqueValue, 95756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall RValue rvalue) 95856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : CGF(CGF), OpaqueValue(opaqueValue), BoundLValue(false) { 95956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(opaqueValue && "no opaque value expression!"); 96056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!shouldBindAsLValue(opaqueValue)); 96156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initRValue(rvalue); 962e996ffd240f20a1048179d7727a6ee3227261921John McCall } 963e996ffd240f20a1048179d7727a6ee3227261921John McCall 964e996ffd240f20a1048179d7727a6ee3227261921John McCall void pop() { 965e996ffd240f20a1048179d7727a6ee3227261921John McCall assert(OpaqueValue && "mapping already popped!"); 96656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall popImpl(); 967e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValue = 0; 968e996ffd240f20a1048179d7727a6ee3227261921John McCall } 969e996ffd240f20a1048179d7727a6ee3227261921John McCall 970e996ffd240f20a1048179d7727a6ee3227261921John McCall ~OpaqueValueMapping() { 97156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (OpaqueValue) popImpl(); 97256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 97356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 97456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall private: 97556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void popImpl() { 97656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (BoundLValue) 97756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueLValues.erase(OpaqueValue); 97856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall else { 97956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueRValues.erase(OpaqueValue); 98056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.unprotectFromPeepholes(Protection); 98156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 98256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 98356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 98456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void init(const OpaqueValueExpr *ov, const Expr *e) { 98556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue = ov; 98656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BoundLValue = shouldBindAsLValue(ov); 98756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(BoundLValue == shouldBindAsLValue(e) 98856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall && "inconsistent expression value kinds!"); 98956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (BoundLValue) 99056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initLValue(CGF.EmitLValue(e)); 99156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall else 99256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initRValue(CGF.EmitAnyExpr(e)); 99356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 99456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 99556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void initLValue(const LValue &lv) { 99656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueLValues.insert(std::make_pair(OpaqueValue, lv)); 99756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 99856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 99956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void initRValue(const RValue &rv) { 100056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // Work around an extremely aggressive peephole optimization in 100156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // EmitScalarConversion which assumes that all other uses of a 100256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // value are extant. 100356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Protection = CGF.protectFromPeepholes(rv); 100456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueRValues.insert(std::make_pair(OpaqueValue, rv)); 1005e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1006e996ffd240f20a1048179d7727a6ee3227261921John McCall }; 1007e220455a059d926953befe72857b9525273717efFariborz Jahanian 1008e220455a059d926953befe72857b9525273717efFariborz Jahanian /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field 1009e220455a059d926953befe72857b9525273717efFariborz Jahanian /// number that holds the value. 1010e220455a059d926953befe72857b9525273717efFariborz Jahanian unsigned getByRefValueLLVMField(const ValueDecl *VD) const; 101152a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian 101252a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// BuildBlockByrefAddress - Computes address location of the 101352a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// variable which is declared as __block. 101452a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, 101552a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian const VarDecl *V); 10167f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerprivate: 1017d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner CGDebugInfo *DebugInfo; 1018aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel bool DisableDebugInfo; 101909429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 102093c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid 102193c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// calling llvm.stacksave for multiple VLAs in the same scope. 102293c332a8ba2c193c435b293966d343dab15f555bJohn McCall bool DidCallStackSave; 102393c332a8ba2c193c435b293966d343dab15f555bJohn McCall 1024f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// IndirectBranch - The first time an indirect goto is seen we create a block 1025f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// with an indirect branch. Every time we see the address of a label taken, 1026f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// we add the label to the indirect goto. Every subsequent indirect goto is 1027f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// codegen'd as a jump to the IndirectBranch's basic block. 1028d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner llvm::IndirectBrInst *IndirectBranch; 10290ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 10300dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C 10310dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// decls. 10326b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; 10336b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall DeclMapTy LocalDeclMap; 10345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LabelMap - This keeps track of the LLVM basic block for each C label. 1036ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; 10370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 10380dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // BreakContinueStack - This keeps track of where break and continue 1039e4b6d342c29d5cb9d311756100df1603810fa892Anders Carlsson // statements should jump to. 1040da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner struct BreakContinue { 1041f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BreakContinue(JumpDest Break, JumpDest Continue) 1042f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall : BreakBlock(Break), ContinueBlock(Continue) {} 10430dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1044f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest BreakBlock; 1045f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ContinueBlock; 10460dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump }; 1047686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<BreakContinue, 8> BreakContinueStack; 104818ccc7776ad6288c5f630dc7967fb99d099c9cd9Daniel Dunbar 10490dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// SwitchInsn - This is nearest current switch instruction. It is null if if 10500dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// current context is not in a switch. 105151b09f2c528c8460b5465c676173324e44176d62Devang Patel llvm::SwitchInst *SwitchInsn; 105251b09f2c528c8460b5465c676173324e44176d62Devang Patel 10530dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// CaseRangeBlock - This block holds if condition check for last case 105480fd5f96e6805ac43aab99faabd5b4c8b19551b7Devang Patel /// statement range in current switch instruction. 1055c049e4f406a7f7179eba98659044a32508e53289Devang Patel llvm::BasicBlock *CaseRangeBlock; 1056c049e4f406a7f7179eba98659044a32508e53289Devang Patel 105756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// OpaqueLValues - Keeps track of the current set of opaque value 1058e996ffd240f20a1048179d7727a6ee3227261921John McCall /// expressions. 105956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; 106056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; 1061e996ffd240f20a1048179d7727a6ee3227261921John McCall 10620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // VLASizeMap - This keeps track of the associated size for each VLA type. 1063bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // We track this by the size expression rather than the type itself because 1064bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // in certain situations, like a const qualifier applied to an VLA typedef, 1065bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // multiple VLA types can share the same size expression. 10660dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // FIXME: Maybe this could be a stack of maps that is pushed/popped as we 10670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // enter/leave scopes. 1068bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; 10690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1070f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A block containing a single 'unreachable' instruction. Created 1071f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// lazily by getUnreachableBlock(). 1072f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *UnreachableBlock; 10730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1074f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXThisDecl - When generating code for a C++ member function, 1075f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// this will hold the implicit 'this' declaration. 10762b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson ImplicitParamDecl *CXXThisDecl; 10772504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXThisValue; 10781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1079f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXVTTDecl - When generating code for a base object constructor or 1080f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// base object destructor with virtual bases, this will hold the implicit 1081f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// VTT parameter. 1082f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson ImplicitParamDecl *CXXVTTDecl; 10832504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXVTTValue; 10849cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1085150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// OutermostConditional - Points to the outermost active 1086150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// conditional control. This is used so that we know if a 1087150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// temporary should be destroyed conditionally. 1088150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *OutermostConditional; 10891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10907dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson 10917dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM 10927dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// type as well as the field number that contains the actual data. 10932acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::DenseMap<const ValueDecl *, std::pair<llvm::Type *, 10947dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson unsigned> > ByRefValueInfo; 10959cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1096f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *TerminateLandingPad; 1097182f383db1782af752ecaf607fdff72a8542088bMike Stump llvm::BasicBlock *TerminateHandler; 109883252dcfe61aaebcb6bc117e71dc12968729513fChris Lattner llvm::BasicBlock *TrapBB; 1099940670512d7c3d93389bb38a426abcb7ef44271eEli Friedman 11005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 11015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenFunction(CodeGenModule &cgm); 11020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 11031e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall CodeGenTypes &getTypes() const { return CGM.getTypes(); } 1104f2aac84709c418189e476ad591848dad50291885John McCall ASTContext &getContext() const { return CGM.getContext(); } 1105aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel CGDebugInfo *getDebugInfo() { 1106aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel if (DisableDebugInfo) 1107aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return NULL; 1108aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return DebugInfo; 1109aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel } 1110aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void disableDebugInfo() { DisableDebugInfo = true; } 1111aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void enableDebugInfo() { DisableDebugInfo = false; } 1112aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel 1113f85e193739c953358c865005855253af4f68a497John McCall bool shouldUseFusedARCCalls() { 1114f85e193739c953358c865005855253af4f68a497John McCall return CGM.getCodeGenOpts().OptimizationLevel == 0; 1115f85e193739c953358c865005855253af4f68a497John McCall } 11165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1117d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const LangOptions &getLangOptions() const { return CGM.getLangOptions(); } 1118d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1119f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns a pointer to the function's exception object slot, which 1120f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// is assigned in every landing pad. 1121f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *getExceptionSlot(); 112293c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Value *getEHSelectorSlot(); 1123f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1124ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getNormalCleanupDestSlot(); 1125ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 1126f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getUnreachableBlock() { 1127f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!UnreachableBlock) { 1128f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall UnreachableBlock = createBasicBlock("unreachable"); 1129f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); 1130f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1131f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return UnreachableBlock; 1132f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1133f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1134f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDest() { 1135f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!EHStack.requiresLandingPad()) return 0; 1136f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return getInvokeDestImpl(); 1137f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 11389834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1139d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } 114069243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson 11419834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 1142bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall // Cleanups 1143bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall //===--------------------------------------------------------------------===// 1144bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1145bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall typedef void Destroyer(CodeGenFunction &CGF, llvm::Value *addr, QualType ty); 1146bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 11472673c68aa58e277ebc755b71d81aca618cdedbf9John McCall void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, 11482673c68aa58e277ebc755b71d81aca618cdedbf9John McCall llvm::Value *arrayEndPointer, 11492673c68aa58e277ebc755b71d81aca618cdedbf9John McCall QualType elementType, 11502673c68aa58e277ebc755b71d81aca618cdedbf9John McCall Destroyer &destroyer); 11512673c68aa58e277ebc755b71d81aca618cdedbf9John McCall void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, 11522673c68aa58e277ebc755b71d81aca618cdedbf9John McCall llvm::Value *arrayEnd, 11532673c68aa58e277ebc755b71d81aca618cdedbf9John McCall QualType elementType, 11542673c68aa58e277ebc755b71d81aca618cdedbf9John McCall Destroyer &destroyer); 1155bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 11569928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall void pushDestroy(QualType::DestructionKind dtorKind, 11579928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall llvm::Value *addr, QualType type); 1158bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall void pushDestroy(CleanupKind kind, llvm::Value *addr, QualType type, 11592673c68aa58e277ebc755b71d81aca618cdedbf9John McCall Destroyer &destroyer, bool useEHCleanupForArray); 11602673c68aa58e277ebc755b71d81aca618cdedbf9John McCall void emitDestroy(llvm::Value *addr, QualType type, Destroyer &destroyer, 11612673c68aa58e277ebc755b71d81aca618cdedbf9John McCall bool useEHCleanupForArray); 1162a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall llvm::Function *generateDestroyHelper(llvm::Constant *addr, 1163a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall QualType type, 1164a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall Destroyer &destroyer, 1165a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall bool useEHCleanupForArray); 1166bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall void emitArrayDestroy(llvm::Value *begin, llvm::Value *end, 11672673c68aa58e277ebc755b71d81aca618cdedbf9John McCall QualType type, Destroyer &destroyer, 1168fbf780a9d1dbb191fc40c8af967c590e08724b74John McCall bool checkZeroLength, bool useEHCleanup); 1169bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 11709928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall Destroyer &getDestroyer(QualType::DestructionKind destructionKind); 11719928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 1172bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// Determines whether an EH cleanup is required to destroy a type 1173bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// with the given destruction kind. 1174bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall bool needsEHCleanup(QualType::DestructionKind kind) { 1175bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall switch (kind) { 1176bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_none: 1177bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall return false; 1178bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_cxx_destructor: 1179bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_objc_weak_lifetime: 1180bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall return getLangOptions().Exceptions; 1181bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_objc_strong_lifetime: 1182bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall return getLangOptions().Exceptions && 1183bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall CGM.getCodeGenOpts().ObjCAutoRefCountExceptions; 1184bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall } 1185bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm_unreachable("bad destruction kind"); 1186bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall } 1187bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 11889928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CleanupKind getCleanupKind(QualType::DestructionKind kind) { 11899928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup); 11909928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 11919928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 1192bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall //===--------------------------------------------------------------------===// 11939834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar // Objective-C 11949834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 11959834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1196391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner void GenerateObjCMethod(const ObjCMethodDecl *OMD); 1197af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 11980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void StartObjCMethod(const ObjCMethodDecl *MD, 11998d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel const ObjCContainerDecl *CD, 12008d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel SourceLocation StartLoc); 1201af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 12020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCGetter - Synthesize an Objective-C property getter function. 1203fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCGetter(ObjCImplementationDecl *IMP, 1204fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 12052846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian void GenerateObjCGetterBody(ObjCIvarDecl *Ivar, bool IsAtomic, bool IsStrong); 12062846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian void GenerateObjCAtomicSetterBody(ObjCMethodDecl *OMD, 12072846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ObjCIvarDecl *Ivar); 12082846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian 1209109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, 1210109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *MD, bool ctor); 1211af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 12120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCSetter - Synthesize an Objective-C property setter function 12130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// for the given property. 1214fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCSetter(ObjCImplementationDecl *IMP, 1215fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 12160b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian bool IndirectObjCSetterArg(const CGFunctionInfo &FI); 121715bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IvarTypeWithAggrGCObjects(QualType Ty); 1218af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 12194e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 12204e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump // Block Bits 12214e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 12224e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 12236b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *EmitBlockLiteral(const BlockExpr *); 12242a7eb28397148079cbc8e54e8a3871ef01c4f4bcBlaine Garst llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, 122589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const CGBlockInfo &Info, 12262acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *, 1227d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *BlockVarLayout); 12284e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1229564360be450b319aeafc26698be9811837bfb826Fariborz Jahanian llvm::Function *GenerateBlockFunction(GlobalDecl GD, 12306b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &Info, 12316cc88f78fd36d3511b89412b193494b3e423cbffMike Stump const Decl *OuterFuncDecl, 12326b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const DeclMapTy &ldm); 12334e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1234d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); 1235d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); 1236d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1237d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); 1238d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 12395af02db5a48476e0748f135369663080eae87c64John McCall class AutoVarEmission; 12405af02db5a48476e0748f135369663080eae87c64John McCall 12415af02db5a48476e0748f135369663080eae87c64John McCall void emitByrefStructureInit(const AutoVarEmission &emission); 12425af02db5a48476e0748f135369663080eae87c64John McCall void enterByrefCleanup(const AutoVarEmission &emission); 12435af02db5a48476e0748f135369663080eae87c64John McCall 12446b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *LoadBlockStruct() { 12456b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall assert(BlockPointer && "no block pointer set!"); 12466b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall return BlockPointer; 12476b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall } 12484e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1249ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockCXXThisPointer(const CXXThisExpr *E); 1250ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockDecl(const BlockDeclRefExpr *E); 1251ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall llvm::Value *GetAddrOfBlockDecl(const BlockDeclRefExpr *E) { 1252ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall return GetAddrOfBlockDecl(E->getDecl(), E->isByRef()); 1253ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall } 12546b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); 12552acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BuildByRefType(const VarDecl *var); 1256dab514fc30242c7afd6c03956e46136c400fb0d3Mike Stump 1257d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCode(GlobalDecl GD, llvm::Function *Fn, 1258d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo); 12590ff8bafde95f6fa51ccea70738c1b99db870bddcAnders Carlsson void StartFunction(GlobalDecl GD, QualType RetTy, 12607c086516f3cc9fba2733b1919973206c6ba4b171Daniel Dunbar llvm::Function *Fn, 1261d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo, 12622284ac9ec80299fcdefae9a2787cf85105a0f203Daniel Dunbar const FunctionArgList &Args, 12639c6082fe89c61af697f017aa80937581cc2128d8Tilmann Scheller SourceLocation StartLoc); 1264a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 12659fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitConstructorBody(FunctionArgList &Args); 12669fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitDestructorBody(FunctionArgList &Args); 12679fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitFunctionBody(FunctionArgList &Args); 1268a355e07454463b19829ac92ffd115a097faff0e0John McCall 12690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitReturnBlock - Emit the unified return block, trying to avoid its 12700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emission when possible. 12711c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar void EmitReturnBlock(); 12721c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar 12730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// FinishFunction - Complete IR generation of the current function. It is 12740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// legal to call this function even if there is no current insertion point. 1275af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar void FinishFunction(SourceLocation EndLoc=SourceLocation()); 127617b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1277519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson /// GenerateThunk - Generate a thunk for the given method. 1278d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 1279d26bc76c98006609002d9930f8840490e88ac5b5John McCall GlobalDecl GD, const ThunkInfo &Thunk); 12809cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 12817dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 12827dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman GlobalDecl GD, const ThunkInfo &Thunk); 12837dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman 1284fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, 1285fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor FunctionArgList &Args); 12861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1287d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// InitializeVTablePointer - Initialize the vtable pointer of the given 1288d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// subobject. 1289d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// 12909cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointer(BaseSubobject Base, 1291b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1292d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1293d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson llvm::Constant *VTable, 1294d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson const CXXRecordDecl *VTableClass); 1295d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1296d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; 12979cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointers(BaseSubobject Base, 1298b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1299d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1300603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson bool BaseIsNonVirtualPrimaryBase, 1301603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson llvm::Constant *VTable, 1302603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson const CXXRecordDecl *VTableClass, 1303603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson VisitedVirtualBasesSetTy& VBases); 130477a259c6dbf582949af8a243b472c0c7faa373a6Eli Friedman 1305603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); 1306d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1307043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// GetVTablePtr - Return the Value of the vtable pointer member pointed 1308043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// to by This. 13092acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value *GetVTablePtr(llvm::Value *This, llvm::Type *Ty); 1310d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 131150da2cadcc6da86abff6772de65280ace2cabc94John McCall /// EnterDtorCleanups - Enter the cleanups necessary to complete the 131250da2cadcc6da86abff6772de65280ace2cabc94John McCall /// given phase of destruction for a destructor. The end result 131350da2cadcc6da86abff6772de65280ace2cabc94John McCall /// should call destructors on members and base classes in reverse 131450da2cadcc6da86abff6772de65280ace2cabc94John McCall /// order of their construction. 131550da2cadcc6da86abff6772de65280ace2cabc94John McCall void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); 13161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13177255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// ShouldInstrumentFunction - Return true if the current function should be 13187255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumented with __cyg_profile_func_* calls 13197255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner bool ShouldInstrumentFunction(); 13207255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 13217255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// EmitFunctionInstrumentation - Emit LLVM code to call the specified 13227255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumentation function with the current function and the call site, if 13237255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// function instrumentation is enabled. 13247255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner void EmitFunctionInstrumentation(const char *Fn); 13257255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 1326be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky /// EmitMCountInstrumentation - Emit call to .mcount. 1327be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky void EmitMCountInstrumentation(); 1328be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky 13290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionProlog - Emit the target specific LLVM code to load the 13300dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// arguments for the given function. This is also responsible for naming the 13310dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM function arguments. 133288b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar void EmitFunctionProlog(const CGFunctionInfo &FI, 133388b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Function *Fn, 133417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const FunctionArgList &Args); 133517b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 13360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionEpilog - Emit the target specific LLVM code to return the 13370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// given temporary. 133835b21b884e5c3447a52a74d7ffaba966b07ac81fChris Lattner void EmitFunctionEpilog(const CGFunctionInfo &FI); 133917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1340cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitStartEHSpec - Emit the start of the exception spec. 1341cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitStartEHSpec(const Decl *D); 1342cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1343cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitEndEHSpec - Emit the end of the exception spec. 1344cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitEndEHSpec(const Decl *D); 1345cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1346f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateLandingPad - Return a landing pad that just calls terminate. 1347f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getTerminateLandingPad(); 1348f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1349f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateHandler - Return a handler (not a landing pad, just 1350f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a catch handler) that just calls terminate. This is used when 1351f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a terminate scope encloses a try. 13529b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump llvm::BasicBlock *getTerminateHandler(); 13539b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump 13549cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ConvertTypeForMem(QualType T); 13559cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ConvertType(QualType T); 13569cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ConvertType(const TypeDecl *T) { 1357bff225ecf77fb891596ecb1b27196310d268365eJohn McCall return ConvertType(getContext().getTypeDeclType(T)); 1358bff225ecf77fb891596ecb1b27196310d268365eJohn McCall } 1359c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner 13600dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LoadObjCSelf - Load the value of self. This function is only valid while 13610dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// generating code for an Objective-C method. 1362c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner llvm::Value *LoadObjCSelf(); 13630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 13640dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// TypeOfSelfObject - Return type of object that this self represents. 136545012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian QualType TypeOfSelfObject(); 13664111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 13675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// hasAggregateLLVMType - Return true if the specified AST type will map into 13685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an aggregate LLVM type or is void. 13695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool hasAggregateLLVMType(QualType T); 137055e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar 137155e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar /// createBasicBlock - Create an LLVM basic block. 1372686775deca8b8685eb90801495880e3abdd844c2Chris Lattner llvm::BasicBlock *createBasicBlock(StringRef name = "", 1373d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Function *parent = 0, 1374d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::BasicBlock *before = 0) { 137529ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#ifdef NDEBUG 1376d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); 137729ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#else 1378d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); 137929ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#endif 138055e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar } 13810dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 13825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getBasicBlockForLabel - Return the LLVM basicblock that the specified 13835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// label maps to. 1384ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner JumpDest getJumpDestForLabel(const LabelDecl *S); 13850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1386f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// SimplifyForwardingBlocks - If the given basic block is only a branch to 1387f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// another basic block, simplify it. This assumes that no other code could 1388f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// potentially reference the basic block. 1389aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar void SimplifyForwardingBlocks(llvm::BasicBlock *BB); 1390aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar 13910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBlock - Emit the given block \arg BB and set it as the insert point, 13920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// adding a fall-through branch from the current insert block if 13930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessary. It is legal to call this function even if there is no current 13940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 1395a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar /// 13960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// IsFinished - If true, indicates that the caller has finished emitting 13970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// branches to the given block and does not expect to emit code into it. This 13980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// means the block can be ignored if it is unreachable. 1399a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); 1400824e3bd76b2e32db2ec6e4d2d113413e518d1c63Daniel Dunbar 1401777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// EmitBlockAfterUses - Emit the given block somewhere hopefully 1402777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// near its uses, and leave the insertion point in it. 1403777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall void EmitBlockAfterUses(llvm::BasicBlock *BB); 1404777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall 14050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBranch - Emit a branch to the specified basic block from the current 14060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insert block, taking care to avoid creation of branches from dummy 14070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// blocks. It is legal to call this function even if there is no current 14080dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 14095e08ad3cc62ab94649959ae227a9a411a729bf49Daniel Dunbar /// 14100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function clears the current insertion point. The caller should follow 14110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calls to this function with calls to Emit*Block prior to generation new 14120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// code. 1413d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar void EmitBranch(llvm::BasicBlock *Block); 1414d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar 14150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// HaveInsertPoint - True if an insertion point is defined. If not, this 14160dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// indicates that the current code being emitted is unreachable. 14170dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump bool HaveInsertPoint() const { 1418a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar return Builder.GetInsertBlock() != 0; 1419a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 1420a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 14210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint - Ensure that an insertion point is defined so that 14220dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emitted IR has a place to go. Note that by definition, if this function 14230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// creates a block then that block is unreachable; callers may do better to 14240dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// detect when no insertion point is defined and simply skip IR generation. 1425a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar void EnsureInsertPoint() { 1426a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar if (!HaveInsertPoint()) 1427a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar EmitBlock(createBasicBlock()); 1428a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 14290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1430488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar /// ErrorUnsupported - Print out an error that codegen doesn't support the 1431dc5e8268292046114ffe02e48773572a91a310f1Chris Lattner /// specified stmt yet. 143290df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar void ErrorUnsupported(const Stmt *S, const char *Type, 143390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError=false); 14345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 14365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Helpers 14375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 14380dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1439983e3d7dac99aed376939f1a4daadef98e09c3b9Daniel Dunbar LValue MakeAddrLValue(llvm::Value *V, QualType T, unsigned Alignment = 0) { 14403d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return LValue::MakeAddr(V, T, Alignment, getContext(), 14413d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman CGM.getTBAAInfo(T)); 14425cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar } 14435cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar 14445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CreateTempAlloca - This creates a alloca and inserts it into the entry 1445195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// block. The caller is responsible for setting an appropriate alignment on 1446195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// the alloca. 14472acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, 14488cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner const Twine &Name = "tmp"); 14490dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1450ac418162692a951ca3796d6830496a85a2d12493John McCall /// InitTempAlloca - Provide an initial value for the given alloca. 1451ac418162692a951ca3796d6830496a85a2d12493John McCall void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); 1452ac418162692a951ca3796d6830496a85a2d12493John McCall 14539bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// CreateIRTemp - Create a temporary IR object of the given type, with 14549bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// appropriate alignment. This routine should only be used when an temporary 14559bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// value needs to be stored into an alloca (for example, to avoid explicit 14569bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// PHI construction), but the type is the IR type, not the type appropriate 14579bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// for storing in memory. 14588cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner llvm::AllocaInst *CreateIRTemp(QualType T, const Twine &Name = "tmp"); 14599bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar 1460195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// CreateMemTemp - Create a temporary memory object of the given type, with 1461195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// appropriate alignment. 14628cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner llvm::AllocaInst *CreateMemTemp(QualType T, const Twine &Name = "tmp"); 1463195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar 1464558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// CreateAggTemp - Create a temporary memory object for the given 1465558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// aggregate type. 14668cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") { 1467f85e193739c953358c865005855253af4f68a497John McCall return AggValueSlot::forAddr(CreateMemTemp(T, Name), T.getQualifiers(), 1468f85e193739c953358c865005855253af4f68a497John McCall false); 1469558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall } 1470558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall 1471d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall /// Emit a cast to void* in the appropriate address space. 1472d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *EmitCastToVoidPtr(llvm::Value *value); 1473d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 14745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateExprAsBool - Perform the usual unary conversions on the specified 14755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression and compare the result against zero, returning an Int1Ty value. 14765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Value *EvaluateExprAsBool(const Expr *E); 14775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14782a41637a995affa1563f4d82a8b026e326a2faa0John McCall /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. 14792a41637a995affa1563f4d82a8b026e326a2faa0John McCall void EmitIgnoredExpr(const Expr *E); 14802a41637a995affa1563f4d82a8b026e326a2faa0John McCall 14819b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// EmitAnyExpr - Emit code to compute the specified expression which can have 14829b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// any type. The result is returned as an RValue struct. If this is an 14839b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// aggregate expression, the aggloc/agglocvolatile arguments indicate where 14849b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// the result should be returned. 148549d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// 148649d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// \param IgnoreResult - True if the resulting value isn't used. 1487558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExpr(const Expr *E, 1488558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AggSlot = AggValueSlot::ignored(), 1489558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IgnoreResult = false); 1490d9363c3a80168283b3da518b4e17f545a6246857Devang Patel 14910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // EmitVAListRef - Emit a "reference" to a va_list; this is either the address 14920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // or the value of the expression, depending on how va_list is defined. 14934fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman llvm::Value *EmitVAListRef(const Expr *E); 14944fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman 14950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will 14960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// always be accessible even if no aggregate location is provided. 1497558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExprToTemp(const Expr *E); 149846f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbar 149960d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitAnyExprToMem - Emits the code necessary to evaluate an 15003d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall /// arbitrary expression into the given memory location. 15013d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, 1502f85e193739c953358c865005855253af4f68a497John McCall Qualifiers Quals, bool IsInitializer); 15033d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall 150460d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitExprAsInit - Emits the code necessary to initialize a 150560d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// location in memory with the given initializer. 1506f85e193739c953358c865005855253af4f68a497John McCall void EmitExprAsInit(const Expr *init, const ValueDecl *D, 1507a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall LValue lvalue, bool capturedByInit); 150860d3365b46eb826fba44483583c0051ac5c41fe3John McCall 150927fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// EmitAggregateCopy - Emit an aggrate copy. 151027fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// 151127fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// \param isVolatile - True iff either the source or the destination is 151227fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// volatile. 15137482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, 151427fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump QualType EltTy, bool isVolatile=false); 15157482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar 151651b09f2c528c8460b5465c676173324e44176d62Devang Patel /// StartBlock - Start new block named N. If insert block is a dummy block 151751b09f2c528c8460b5465c676173324e44176d62Devang Patel /// then reuse it. 151851b09f2c528c8460b5465c676173324e44176d62Devang Patel void StartBlock(const char *N); 151951b09f2c528c8460b5465c676173324e44176d62Devang Patel 1520813733577d33ec56479667b49e1bff42dc6bba90Lauro Ramos Venancio /// GetAddrOfStaticLocalVar - Return the address of a static local variable. 15214c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD) { 15224c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return cast<llvm::Constant>(GetAddrOfLocalVar(BVD)); 15234c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 15244f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1525dde0a94120915fa925d1ffcdb997c7b44dc9fa21Anders Carlsson /// GetAddrOfLocalVar - Return the address of a local variable. 15264c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { 15274c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *Res = LocalDeclMap[VD]; 15284c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); 15294c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return Res; 15304c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 15310dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 153256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueLValueMapping - Given an opaque value expression (which 153356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an l-value), return its mapping. 153456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { 153556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(OpaqueValueMapping::shouldBindAsLValue(e)); 153656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 153756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator 153856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueLValues.find(e); 153956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); 154056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return it->second; 154156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 154256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 154356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueRValueMapping - Given an opaque value expression (which 154456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an r-value), return its mapping. 154556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { 154656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!OpaqueValueMapping::shouldBindAsLValue(e)); 154756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 154856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator 154956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueRValues.find(e); 155056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); 1551e996ffd240f20a1048179d7727a6ee3227261921John McCall return it->second; 1552e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1553e996ffd240f20a1048179d7727a6ee3227261921John McCall 15544f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// getAccessedFieldNo - Given an encoded value and a result number, return 15554f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// the input field number being accessed. 15564f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); 15574f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1558ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); 15593d00fdc82fd550ae4bfbb2e700a1fc85bbd6d6fdChris Lattner llvm::BasicBlock *GetIndirectGotoBlock(); 15600ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 15611884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// EmitNullInitialization - Generate code to set a value of the given type to 15621884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// null, If the type contains data member pointers, they will be initialized 15631884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// to -1 in accordance with the Itanium C++ ABI. 15641884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); 1565ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1566ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // EmitVAArg - Generate code to get an argument from the passed in pointer 1567ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // and update it accordingly. The return value is a pointer to the argument. 1568ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // FIXME: We should be able to get rid of this method and use the va_arg 15690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // instruction in LLVM instead once it works well enough. 1570ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); 1571f666b7780d04186521adcaedb0e15dfa4d5e6933Anders Carlsson 1572bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// emitArrayLength - Compute the length of an array, even if it's a 1573bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// VLA, and drill down to the base element type. 1574bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *emitArrayLength(const ArrayType *arrayType, 1575bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType &baseType, 1576bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *&addr); 1577bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1578bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// EmitVLASize - Capture all the sizes for the VLA expressions in 1579bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// the given variably-modified type and store them in the VLASizeMap. 1580d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1581d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1582bc8d40d85f3fa1e34569834916f18fecaa635152John McCall void EmitVariablyModifiedType(QualType Ty); 1583bc8d40d85f3fa1e34569834916f18fecaa635152John McCall 1584bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// getVLASize - Returns an LLVM value that corresponds to the size, 1585bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// in non-variably-sized elements, of a variable length array type, 1586bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// plus that largest non-variably-sized element type. Assumes that 1587bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// the type has already been emitted with EmitVariablyModifiedType. 1588bc8d40d85f3fa1e34569834916f18fecaa635152John McCall std::pair<llvm::Value*,QualType> getVLASize(const VariableArrayType *vla); 1589bc8d40d85f3fa1e34569834916f18fecaa635152John McCall std::pair<llvm::Value*,QualType> getVLASize(QualType vla); 1590dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson 15915f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// LoadCXXThis - Load the value of 'this'. This function is only valid while 15925f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// generating code for an C++ member function. 15932504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXThis() { 15942504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXThisValue && "no 'this' value for this function"); 15952504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXThisValue; 15962504941793b549323f9d29c62507cf21d865fadeJohn McCall } 15971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1598c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have 1599c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// virtual bases. 16002504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXVTT() { 16012504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXVTTValue && "no VTT value for this function"); 16022504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXVTTValue; 16032504941793b549323f9d29c62507cf21d865fadeJohn McCall } 1604bff225ecf77fb891596ecb1b27196310d268365eJohn McCall 1605bff225ecf77fb891596ecb1b27196310d268365eJohn McCall /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a 16068561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson /// complete class to the given direct base. 16078561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson llvm::Value * 16088561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, 16098561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 16108561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Base, 16118561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson bool BaseIsVirtual); 1612a88ad5618fcb07c5374c79d6781a33234984b039Anders Carlsson 1613f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// GetAddressOfBaseClass - This function will add the necessary delta to the 1614f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// load of 'this' and returns address of the base class. 16159cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, 16168561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1617f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1618f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 161934a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson bool NullCheckValue); 162034a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson 1621a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, 16228561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1623f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1624f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 16255a0f49ebc83e7fe0da07b9964c44b0a7fae270cbAnders Carlsson bool NullCheckValue); 1626a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson 1627bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson llvm::Value *GetVirtualBaseClassOffset(llvm::Value *This, 1628bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *ClassDecl, 1629bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *BaseClassDecl); 16309cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1631c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, 1632c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall CXXCtorType CtorType, 1633c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall const FunctionArgList &Args); 1634059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // It's important not to confuse this and the previous function. Delegating 1635059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // constructors are the C++0x feature. The constructor delegate optimization 1636059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // is used to reduce duplication in the base and complete consturctors where 1637059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // they are substantially the same. 1638059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, 1639059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt const FunctionArgList &Args); 1640155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, 1641155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson bool ForVirtualBase, llvm::Value *This, 1642b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1643b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 164434999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 164534999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, 164634999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian llvm::Value *This, llvm::Value *Src, 164734999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgBeg, 164834999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgEnd); 16491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1650288dcaf329c49b01dacd5c1dd9f35609555feecdFariborz Jahanian void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1651569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson const ConstantArrayType *ArrayTy, 16525d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 16535d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 165459174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 165559174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 16569cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1657569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1658569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson llvm::Value *NumElements, 16595d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 16605d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 166159174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 166259174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 1663b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson 1664bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyCXXObject; 1665bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 16667267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, 16678e6404ca28d6bbb76e97ea2a53a74816c2a74665Anders Carlsson bool ForVirtualBase, llvm::Value *This); 16689cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1669ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian void EmitNewArrayInitializer(const CXXNewExpr *E, llvm::Value *NewPtr, 1670ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian llvm::Value *NumElements); 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1672f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitCXXTemporary(const CXXTemporary *Temporary, llvm::Value *Ptr); 16731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1674a00703dccbdc6cc4a293db38477dea7db5538c7eAnders Carlsson llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); 167560e282cc1e508be327b0481cecedc206873cb86aAnders Carlsson void EmitCXXDeleteExpr(const CXXDeleteExpr *E); 16761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16774bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, 16784bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman QualType DeleteTy); 16794bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman 1680c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); 1681c849c052d6b4b70f2651c1969531861a5f230053Mike Stump llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); 1682c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump 1683b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump void EmitCheck(llvm::Value *, unsigned Size); 1684b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 1685dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, 1686dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 1687dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, 1688dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 16895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 16905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Declaration Emission 16915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 16920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1693d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// EmitDecl - Emit a declaration. 1694d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1695d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 16965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDecl(const Decl &D); 1697d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1698b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitVarDecl - Emit a local variable declaration. 1699d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1700d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1701b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitVarDecl(const VarDecl &D); 1702d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1703f85e193739c953358c865005855253af4f68a497John McCall void EmitScalarInit(const Expr *init, const ValueDecl *D, 1704a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall LValue lvalue, bool capturedByInit); 17057acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall void EmitScalarInit(llvm::Value *init, LValue lvalue); 1706f85e193739c953358c865005855253af4f68a497John McCall 1707f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, 1708f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *Address); 1709f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1710b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitAutoVarDecl - Emit an auto variable declaration. 1711d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1712d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 171334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarDecl(const VarDecl &D); 171434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 171534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall class AutoVarEmission { 171634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall friend class CodeGenFunction; 171734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 171857b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall const VarDecl *Variable; 171934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 172034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The alignment of the variable. 172134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall CharUnits Alignment; 172234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 172334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The address of the alloca. Null if the variable was emitted 172434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// as a global constant. 172534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *Address; 172634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 172734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *NRVOFlag; 172834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 172934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is a __block variable. 173034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsByRef; 173134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 173234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is of aggregate type and has a constant 173334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// initializer. 173434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsConstantAggregate; 173534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 173657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall struct Invalid {}; 173757b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall AutoVarEmission(Invalid) : Variable(0) {} 173857b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 173934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission(const VarDecl &variable) 174057b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall : Variable(&variable), Address(0), NRVOFlag(0), 174134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall IsByRef(false), IsConstantAggregate(false) {} 174234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 174334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool wasEmittedAsGlobal() const { return Address == 0; } 174434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 174534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall public: 174657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } 174757b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 174834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Returns the address of the object within this declaration. 174934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Note that this does not chase the forwarding pointer for 175034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// __block decls. 175134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { 175234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall if (!IsByRef) return Address; 175334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 175434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall return CGF.Builder.CreateStructGEP(Address, 175557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall CGF.getByRefValueLLVMField(Variable), 175657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall Variable->getNameAsString()); 175734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall } 175834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall }; 175934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); 176034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarInit(const AutoVarEmission &emission); 176134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarCleanups(const AutoVarEmission &emission); 1762bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall void emitAutoVarTypeCleanup(const AutoVarEmission &emission, 1763bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType::DestructionKind dtorKind); 1764d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1765b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitStaticVarDecl(const VarDecl &D, 1766b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalValue::LinkageTypes Linkage); 1767b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar 1768b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. 1769093ac461b37a573dcf226fa55faed96f318169b9Devang Patel void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); 17700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 177156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protectFromPeepholes - Protect a value that we're intending to 177256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// store to the side, but which will probably be used later, from 177356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// aggressive peepholing optimizations that might delete it. 177456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 177556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Pass the result to unprotectFromPeepholes to declare that 177656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protection is no longer required. 177756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 177856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// There's no particular reason why this shouldn't apply to 177956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// l-values, it's just that no existing peepholes work on pointers. 178056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection protectFromPeepholes(RValue rvalue); 178156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void unprotectFromPeepholes(PeepholeProtection protection); 178256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 17835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 17845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Statement Emission 17855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 17865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 17870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. 17880912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitStopPoint(const Stmt *S); 17890912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 17900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStmt - Emit the code for the statement \arg S. It is legal to call 17910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// this function even if there is no current insertion point. 17920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// 17930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function may clear the current insertion point; callers should use 17940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint if they wish to subsequently generate code without first 17950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calling EmitBlock, EmitBranch, or EmitStmt. 17965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStmt(const Stmt *S); 1797a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 17980912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// EmitSimpleStmt - Try to emit a "simple" statement which does not 17990dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessarily require an insertion point or debug information; typically 18000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// because the statement amounts to a jump or a container of other 18010dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// statements. 18020912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// 18030912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// \return True if the statement was handled. 18040912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar bool EmitSimpleStmt(const Stmt *S); 18050912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 18069b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, 1807558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AVS = AggValueSlot::ignored()); 1808a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 18090dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitLabel - Emit the block for the given label. It is legal to call this 18100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// function even if there is no current insertion point. 1811ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. 1812a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 18135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitLabelStmt(const LabelStmt &S); 18145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitGotoStmt(const GotoStmt &S); 18150ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar void EmitIndirectGotoStmt(const IndirectGotoStmt &S); 18165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitIfStmt(const IfStmt &S); 18175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitWhileStmt(const WhileStmt &S); 18185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDoStmt(const DoStmt &S); 18195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitForStmt(const ForStmt &S); 18205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitReturnStmt(const ReturnStmt &S); 18215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDeclStmt(const DeclStmt &S); 18220912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitBreakStmt(const BreakStmt &S); 18230912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitContinueStmt(const ContinueStmt &S); 182451b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitSwitchStmt(const SwitchStmt &S); 182551b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitDefaultStmt(const DefaultStmt &S); 182651b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitCaseStmt(const CaseStmt &S); 1827c049e4f406a7f7179eba98659044a32508e53289Devang Patel void EmitCaseStmtRange(const CaseStmt &S); 1828fb1aeb804c08d5288a923fb278161783e6abdc66Anders Carlsson void EmitAsmStmt(const AsmStmt &S); 18290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 18303d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); 183164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); 183264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); 183310cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); 1834f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S); 18350dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 183693c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Constant *getUnwindResumeFn(); 183786a3a03667bdb0dcab7e6a2877dfd234b07a6d43Douglas Gregor llvm::Constant *getUnwindResumeOrRethrowFn(); 183859a7000a79118e4c140885ccbb2ac6a686a73092John McCall void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 183959a7000a79118e4c140885ccbb2ac6a686a73092John McCall void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 18409fc6a7774643a810c8501dae2323e863fefb623eJohn McCall 18416815e941998659a55c20c147861b0f437928c3d8Anders Carlsson void EmitCXXTryStmt(const CXXTryStmt &S); 1842ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith void EmitCXXForRangeStmt(const CXXForRangeStmt &S); 18439cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 18445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 18455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LValue Expression Emission 18465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 18475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 184813e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. 184913e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar RValue GetUndefRValue(QualType Ty); 185013e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar 1851ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E 1852ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// and issue an ErrorUnsupported style diagnostic (using the 1853ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// provided Name). 1854ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar RValue EmitUnsupportedRValue(const Expr *E, 1855ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar const char *Name); 1856ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar 18570dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue 18580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an ErrorUnsupported style diagnostic (using the provided Name). 18596ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar LValue EmitUnsupportedLValue(const Expr *E, 18606ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar const char *Name); 18616ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar 18625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLValue - Emit code to compute a designator that specifies the location 18635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the expression. 18645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 18655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// This can return one of two things: a simple address or a bitfield 18665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// reference. In either case, the LLVM Value* in the LValue structure is 18675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// guaranteed to be an LLVM pointer type. 18685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 18695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a bitfield reference, nothing about the pointee type of 18705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the LLVM value is known: For example, it may not be a pointer to an 18715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// integer. 18725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 18735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a normal address, and if the lvalue's C type is fixed 18745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// size, this method guarantees that the returned pointer type will point to 18755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an LLVM type of the same size of the lvalue's type. If the lvalue has a 18765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// variable length type, this is not possible. 18775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 18785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitLValue(const Expr *E); 18790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1880b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// EmitCheckedLValue - Same as EmitLValue but additionally we generate 1881b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// checking code to guard against undefined behavior. This is only 1882b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// suitable when we know that the address will be used to access the 1883b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// object. 1884b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump LValue EmitCheckedLValue(const Expr *E); 1885b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 188626815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitToMemory - Change a scalar value from its value 188726815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its in-memory representation. 188826815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); 188926815d97c5743481e317f17a8d53a6819d061862John McCall 189026815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitFromMemory - Change a scalar value from its memory 189126815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its value representation. 189226815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); 189326815d97c5743481e317f17a8d53a6819d061862John McCall 18949d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitLoadOfScalar - Load a scalar value from an address, taking 18959d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 18969d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 189709429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, 18983d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman unsigned Alignment, QualType Ty, 18993d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 1900545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall 1901545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// EmitLoadOfScalar - Load a scalar value from an address, taking 1902545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// care to appropriately convert from the memory representation to 1903545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// the LLVM value representation. The l-value must be a simple 1904545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// l-value. 1905a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall llvm::Value *EmitLoadOfScalar(LValue lvalue); 19069d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 19079d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitStoreOfScalar - Store a scalar value to an address, taking 19089d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 19099d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 191009429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, 19113d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman bool Volatile, unsigned Alignment, QualType Ty, 19123d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 1913545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall 1914545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// EmitStoreOfScalar - Store a scalar value to an address, taking 1915545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// care to appropriately convert from the memory representation to 1916545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// the LLVM value representation. The l-value must be a simple 1917545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// l-value. 1918a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall void EmitStoreOfScalar(llvm::Value *value, LValue lvalue); 19199d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 19205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLoadOfLValue - Given an expression that represents a value lvalue, 19215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this method emits the address of the lvalue, then loads the result as an 19225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// rvalue, returning the rvalue. 1923545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall RValue EmitLoadOfLValue(LValue V); 1924545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall RValue EmitLoadOfExtVectorElementLValue(LValue V); 1925545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall RValue EmitLoadOfBitfieldLValue(LValue LV); 1926119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall RValue EmitLoadOfPropertyRefLValue(LValue LV, 1927119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall ReturnValueSlot Return = ReturnValueSlot()); 19280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 19295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitStoreThroughLValue - Store the specified rvalue into the specified 19305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lvalue, where both are guaranteed to the have the same type, and that type 19315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is 'Ty'. 1932545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall void EmitStoreThroughLValue(RValue Src, LValue Dst); 1933545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst); 1934119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall void EmitStoreThroughPropertyRefLValue(RValue Src, LValue Dst); 1935ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar 19360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue - Store Src into Dst with same constraints as 19370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue. 1938ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar /// 19390dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// \param Result [out] - If non-null, this will be set to a Value* for the 19400dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// bit-field contents after the store, appropriate for use as the result of 19410dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an assignment to the bit-field. 1942545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, 1943ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar llvm::Value **Result=0); 19440dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 194583ce9d4a552987d34cbd500e983db8d770232379John McCall /// Emit an l-value for an assignment (simple or compound) of complex type. 194683ce9d4a552987d34cbd500e983db8d770232379John McCall LValue EmitComplexAssignmentLValue(const BinaryOperator *E); 19472a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); 194883ce9d4a552987d34cbd500e983db8d770232379John McCall 1949fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner // Note: only available for agg return types 195080e62c29fe21cd06c93eba6e72b7e32dca06fcf9Daniel Dunbar LValue EmitBinaryOperatorLValue(const BinaryOperator *E); 19512a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); 19525b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 195322c940ee588a420cd2e6c8f68be2ac3cc80061ffChristopher Lamb LValue EmitCallExprLValue(const CallExpr *E); 19545b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 19555b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar LValue EmitVAArgExprLValue(const VAArgExpr *E); 19565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitDeclRefLValue(const DeclRefExpr *E); 19575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitStringLiteralLValue(const StringLiteral *E); 1958eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); 1959d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner LValue EmitPredefinedLValue(const PredefinedExpr *E); 19605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitUnaryOpLValue(const UnaryOperator *E); 19615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); 1962213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); 1963b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel LValue EmitMemberExpr(const MemberExpr *E); 1964820bca41c3899374775d2a1dfc2ef2e22aaf1c7bFariborz Jahanian LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); 196506e863f2902b8ba55b056308875c19f7ba3dab25Eli Friedman LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); 196656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); 196775dfedaf702822c9e51a4f3c5d3ecf2d2ad99272Chris Lattner LValue EmitCastLValue(const CastExpr *E); 1968ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); 196903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E); 1970e996ffd240f20a1048179d7727a6ee3227261921John McCall LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); 19719cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 19722a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, 197329e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar const ObjCIvarDecl *Ivar); 1974a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall LValue EmitLValueForAnonRecordField(llvm::Value* Base, 197500eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const IndirectFieldDecl* Field, 1976a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall unsigned CVRQualifiers); 19770ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForField(llvm::Value* Base, const FieldDecl* Field, 1978e6d2a534851a649485cb087e9dfcaf8a65886858Anders Carlsson unsigned CVRQualifiers); 19799cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 198006a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that 198106a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// if the Field is a reference, this will return the address of the reference 198206a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// and not the address of the value stored in the reference. 19839cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer LValue EmitLValueForFieldInitialization(llvm::Value* Base, 198406a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson const FieldDecl* Field, 198506a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson unsigned CVRQualifiers); 19869cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 198745012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian LValue EmitLValueForIvar(QualType ObjectTy, 198845012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian llvm::Value* Base, const ObjCIvarDecl *Ivar, 198929e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar unsigned CVRQualifiers); 199029e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 19910ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForBitfield(llvm::Value* Base, const FieldDecl* Field, 1992598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 1993fd64bb635dc221baa19f81d5d2a084f7eb269f7fFariborz Jahanian 1994a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump LValue EmitBlockDeclRefLValue(const BlockDeclRefExpr *E); 1995a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump 1996b58d017f2b9eeed33f2ab3ede968b89cf5296bf2Anders Carlsson LValue EmitCXXConstructLValue(const CXXConstructExpr *E); 1997e61c9e80a108b5db7e5f0e702f0e455d737c6390Anders Carlsson LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); 19984765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall LValue EmitExprWithCleanupsLValue(const ExprWithCleanups *E); 1999c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); 20009cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 20010a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); 2002391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); 200385c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar LValue EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E); 2004654599454c8e6cc83b1b9b3af43c49c2f66a26cbChris Lattner LValue EmitStmtExprLValue(const StmtExpr *E); 20058bfd31f9dad09cd52225d868bbd92a9bebe87775Fariborz Jahanian LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); 200603b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); 2007189d6ef40eff11b83b2cda941d5ed89a5cef09b2John McCall void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); 200856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 20095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 2010883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner // Scalar Expression Emission 20115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 20125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 20130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitCall - Generate a call of the given function, expecting the given 20140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// result type, and using the given argument list which specifies both the 20150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM arguments and the types they were derived from. 2016c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar /// 2017f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// \param TargetDecl - If given, the decl of the function in a direct call; 2018f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// used to set attributes on the call (noreturn, etc.). 201988b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar RValue EmitCall(const CGFunctionInfo &FnInfo, 202088b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Value *Callee, 2021f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson ReturnValueSlot ReturnValue, 2022c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const CallArgList &Args, 2023dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall const Decl *TargetDecl = 0, 20244b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction **callOrInvoke = 0); 20251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 202631777a2540879051a3c643b90e02c3fd3d315243Anders Carlsson RValue EmitCall(QualType FnType, llvm::Value *Callee, 2027d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue, 2028986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgBeg, 2029986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgEnd, 2030986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson const Decl *TargetDecl = 0); 20319cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitCallExpr(const CallExpr *E, 2032d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue = ReturnValueSlot()); 20331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2034f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 20352d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<llvm::Value *> Args, 20368cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner const Twine &Name = ""); 20374c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 20388cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner const Twine &Name = ""); 2039f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 2040566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, 20412acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty); 20429cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, 20432acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value *This, llvm::Type *Ty); 20442726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, 20452726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian NestedNameSpecifier *Qual, 20462acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty); 2047ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian 2048ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, 2049ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian CXXDtorType Type, 2050771c678c04f5f685b4f188ec6c2fd88ad0f7457fFariborz Jahanian const CXXRecordDecl *RD); 2051566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson 2052b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson RValue EmitCXXMemberCall(const CXXMethodDecl *MD, 2053b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *Callee, 2054a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue, 2055b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *This, 2056c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson llvm::Value *VTT, 2057b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 2058b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 2059a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, 2060a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 2061a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, 2062a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 20635549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 2064a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, 2065a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson const CXXMethodDecl *MD, 2066a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *This); 20670f294632f36459174199b77699e339715244b5abAnders Carlsson RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, 2068a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson const CXXMethodDecl *MD, 2069a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 20701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20719cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 20721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RValue EmitBuiltinExpr(const FunctionDecl *FD, 2073ef2abfee3ea16ec74942dc09e9e425f46aeb2582Daniel Dunbar unsigned BuiltinID, const CallExpr *E); 20745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2075a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); 207609429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 20770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call 20780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is unhandled by the current target. 2079f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 2080f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar 20812752c0137d95aa2f4ee1cdff4b564bac842e041bChris Lattner llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 20829cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *EmitNeonCall(llvm::Function *F, 2083686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<llvm::Value*> &O, 2084db3d4d036037f379f12643e067b229862d61e932Bob Wilson const char *name, 208561eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman unsigned shift = 0, bool rightshift = false); 2086cf55652cf668c1402eee0b12edd2e5a1bc34d7a1Bob Wilson llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); 20872acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty, 208861eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman bool negateForRightShift); 20899cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 2090686775deca8b8685eb90801495880e3abdd844c2Chris Lattner llvm::Value *BuildVector(const SmallVectorImpl<llvm::Value*> &Ops); 2091564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); 2092564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 20930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2094ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); 20957f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); 20968fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); 2097ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, 2098ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 20998fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 2100f85e193739c953358c865005855253af4f68a497John McCall /// Retrieves the default cleanup kind for an ARC cleanup. 2101f85e193739c953358c865005855253af4f68a497John McCall /// Except under -fobjc-arc-eh, ARC cleanups are normal-only. 2102f85e193739c953358c865005855253af4f68a497John McCall CleanupKind getARCCleanupKind() { 2103f85e193739c953358c865005855253af4f68a497John McCall return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions 2104f85e193739c953358c865005855253af4f68a497John McCall ? NormalAndEHCleanup : NormalCleanup; 2105f85e193739c953358c865005855253af4f68a497John McCall } 2106f85e193739c953358c865005855253af4f68a497John McCall 2107f85e193739c953358c865005855253af4f68a497John McCall // ARC primitives. 2108f85e193739c953358c865005855253af4f68a497John McCall void EmitARCInitWeak(llvm::Value *value, llvm::Value *addr); 2109f85e193739c953358c865005855253af4f68a497John McCall void EmitARCDestroyWeak(llvm::Value *addr); 2110f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCLoadWeak(llvm::Value *addr); 2111f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCLoadWeakRetained(llvm::Value *addr); 2112f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreWeak(llvm::Value *value, llvm::Value *addr, 2113f85e193739c953358c865005855253af4f68a497John McCall bool ignored); 2114f85e193739c953358c865005855253af4f68a497John McCall void EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src); 2115f85e193739c953358c865005855253af4f68a497John McCall void EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src); 2116f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value); 2117f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value); 2118545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value, 2119545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall bool ignored); 2120f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreStrongCall(llvm::Value *addr, llvm::Value *value, 2121f85e193739c953358c865005855253af4f68a497John McCall bool ignored); 2122f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetain(QualType type, llvm::Value *value); 2123f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainNonBlock(llvm::Value *value); 2124f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainBlock(llvm::Value *value); 2125f85e193739c953358c865005855253af4f68a497John McCall void EmitARCRelease(llvm::Value *value, bool precise); 2126f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCAutorelease(llvm::Value *value); 2127f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value); 2128f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value); 2129f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value); 2130f85e193739c953358c865005855253af4f68a497John McCall 2131f85e193739c953358c865005855253af4f68a497John McCall std::pair<LValue,llvm::Value*> 2132f85e193739c953358c865005855253af4f68a497John McCall EmitARCStoreAutoreleasing(const BinaryOperator *e); 2133f85e193739c953358c865005855253af4f68a497John McCall std::pair<LValue,llvm::Value*> 2134f85e193739c953358c865005855253af4f68a497John McCall EmitARCStoreStrong(const BinaryOperator *e, bool ignored); 2135f85e193739c953358c865005855253af4f68a497John McCall 2136f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCProduceObject(QualType T, llvm::Value *Ptr); 2137f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr); 2138f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr); 2139f85e193739c953358c865005855253af4f68a497John McCall 2140f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainScalarExpr(const Expr *expr); 2141f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr); 2142f85e193739c953358c865005855253af4f68a497John McCall 2143bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyARCStrongImprecise; 2144bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyARCStrongPrecise; 2145bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyARCWeak; 2146bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 2147f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr); 2148f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCAutoreleasePoolPush(); 2149f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCMRRAutoreleasePoolPush(); 2150f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr); 2151f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr); 2152f85e193739c953358c865005855253af4f68a497John McCall 21534029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in 21544029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// expression. Will emit a temporary variable if E is not an LValue. 21559cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitReferenceBindingToExpr(const Expr* E, 215632f36baa6c8d491c374af622b4e3ac28d597453cAnders Carlsson const NamedDecl *InitializedDecl); 21573aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 2158883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 2159bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expression Emission 2160883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 2161bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner 2162bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expressions are broken into three classes: scalar, complex, aggregate. 21630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21640dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitScalarExpr - Emit the computation of the specified expression of LLVM 21650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// scalar type, returning the result. 216614c5cbf59cffee52275230922283a247de407712Anders Carlsson llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); 21670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21683707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 21693707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 21703707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, 21713707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner QualType DstTy); 21720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21734f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 21740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// complex type to the specified destination type, where the destination type 21750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is an LLVM scalar type. 21764f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, 21774f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy); 21780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2180558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// EmitAggExpr - Emit the computation of the specified expression 2181558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// of aggregate type. The result is computed into the given slot, 2182558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// which may be null to indicate that the value is not needed. 2183474e2fe4957e6e72cee36ed189eaf21878ad0e91Fariborz Jahanian void EmitAggExpr(const Expr *E, AggValueSlot AS, bool IgnoreResult = false); 21840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 218518aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// EmitAggExprToLValue - Emit the computation of the specified expression of 218618aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// aggregate type into a temporary LValue. 218718aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar LValue EmitAggExprToLValue(const Expr *E); 218818aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar 2189082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// EmitGCMemmoveCollectable - Emit special API for structs with object 2190082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// pointers. 2191082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, 219208c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 2193082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 21940c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /// EmitExtendGCLifetime - Given a pointer to an Objective-C object, 21950c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /// make sure it survives garbage collection until this point. 21960c24c808e4dce43e88abf2d5f98546b901bd4315John McCall void EmitExtendGCLifetime(llvm::Value *object); 21970c24c808e4dce43e88abf2d5f98546b901bd4315John McCall 2198b6ef18a2b06d6760459e1756a61f79ff496cee19Chris Lattner /// EmitComplexExpr - Emit the computation of the specified expression of 219923b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// complex type, returning the result. 2200b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall ComplexPairTy EmitComplexExpr(const Expr *E, 2201b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreReal = false, 2202b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreImag = false); 22030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 220423b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// EmitComplexExprIntoAddr - Emit the computation of the specified expression 220523b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// of complex type, storing into the specified Value*. 2206190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, 2207190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner bool DestIsVolatile); 22087f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar 22097f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar /// StoreComplexToAddr - Store a complex number into the specified address. 22107f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, 22117f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar bool DestIsVolatile); 22129b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// LoadComplexFromAddr - Load a complex number from the specified address. 22139b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); 22142621fd1d6d3c5eadcae246859f62738645df7540Chris Lattner 2215b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// CreateStaticVarDecl - Create a zero-initialized LLVM global for 2216b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// a static local variable. 2217b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, 2218b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall const char *Separator, 2219f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump llvm::GlobalValue::LinkageTypes Linkage); 22209cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 2221b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the 2222761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// global variable that has already been created for it. If the initializer 2223761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// has a different type than GV does, this may free GV and return a different 2224761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// one. Otherwise it just returns GV. 2225761acc19d966a67f2175783d09412d6ac9463400Chris Lattner llvm::GlobalVariable * 2226b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall AddInitializerToStaticVarDecl(const VarDecl &D, 2227b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *GV); 22289cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 22290096acf421c4609ce7f43e8b05f8c5ca866d4611Daniel Dunbar 22303b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ 22313b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// variable with global storage. 22323b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr); 22333b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson 22343b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalDtorRegistration - Emits a call to register the global ptr 22353b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// with the C++ runtime so that its destructor will be called at exit. 223688f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian void EmitCXXGlobalDtorRegistration(llvm::Constant *DtorFn, 22373b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson llvm::Constant *DeclPtr); 22381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22393030eb82593097502469a8b3fc26112c79c75605John McCall /// Emit code in this function to perform a guarded variable 22403030eb82593097502469a8b3fc26112c79c75605John McCall /// initialization. Guarded initializations are used when it's not 22413030eb82593097502469a8b3fc26112c79c75605John McCall /// possible to prove that an initialization will be done exactly 22423030eb82593097502469a8b3fc26112c79c75605John McCall /// once, e.g. with a static local variable or a static data member 22433030eb82593097502469a8b3fc26112c79c75605John McCall /// of a class template. 22443030eb82593097502469a8b3fc26112c79c75605John McCall void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr); 22455cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 2246efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalInitFunc - Generates code for initializing global 2247efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2248efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalInitFunc(llvm::Function *Fn, 2249efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant **Decls, 2250efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar unsigned NumDecls); 2251efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2252efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalDtorFunc - Generates code for destroying global 2253efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2254efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalDtorFunc(llvm::Function *Fn, 2255810112e28dc839715d17b0a786f23aaa19600ac0Chris Lattner const std::vector<std::pair<llvm::WeakVH, 2256efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant*> > &DtorsAndObjects); 2257efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2258d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, 2259d26bc76c98006609002d9930f8840490e88ac5b5John McCall const VarDecl *D, 22603030eb82593097502469a8b3fc26112c79c75605John McCall llvm::GlobalVariable *Addr); 2261efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2262558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); 226334999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 226434999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, 2265830937bc1100fba7682f7c32c40512085870f50cFariborz Jahanian const Expr *Exp); 22661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22674765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall RValue EmitExprWithCleanups(const ExprWithCleanups *E, 22684765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall AggValueSlot Slot =AggValueSlot::ignored()); 22691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2270756b5c4f9d52642d87d1948bee58f97a4f795b24Anders Carlsson void EmitCXXThrowExpr(const CXXThrowExpr *E); 22711eb2e59338c4b9c0429fc39ca98662adc9e7a3f2Douglas Gregor 22720ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 22730ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar // Internal Helpers 22740ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 22750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 22760946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// ContainsLabel - Return true if the statement contains a label in it. If 22770946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// this statement is not executed normally, it not containing a label means 22780946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// that we can just remove the code. 22790946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); 22800dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2281ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// containsBreak - Return true if the statement contains a break out of it. 2282ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// If the statement (recursively) contains a switch or loop with a break 2283ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// inside of it, this is fine. 2284ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner static bool containsBreak(const Stmt *S); 2285ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 22864bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2287c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2288c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// constant folds return true and set the boolean result in Result. 2289c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); 22900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2291ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2292ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2293ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// constant folds return true and set the folded value. 2294ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APInt &Result); 2295ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 229631a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an 229731a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// if statement) to the specified blocks. Based on the condition, this might 229831a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// try to simplify the codegen of the conditional based on the branch. 22999bc47e29dce8f095be7a6d07dbb02a5a7a112949Chris Lattner void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, 23004bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar llvm::BasicBlock *FalseBlock); 2301be07f60131bc6f8d6696f4644df1ef667a1730d5Mike Stump 230215037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// getTrapBB - Create a basic block that will call the trap intrinsic. We'll 230315037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// generate a branch around the created basic block as necessary. 23046c552c1d5f47fbba00e6268d96a26ad026f2da2aChris Lattner llvm::BasicBlock *getTrapBB(); 23059cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 230621c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson /// EmitCallArg - Emit a single call argument. 2307413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); 230821c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson 23092736071ea3a46f90e65c93418961611d96c10ab9John McCall /// EmitDelegateCallArg - We are performing a delegate call; that 23102736071ea3a46f90e65c93418961611d96c10ab9John McCall /// is, the current function is delegating to another one. Produce 23112736071ea3a46f90e65c93418961611d96c10ab9John McCall /// a r-value suitable for passing the given parameter. 2312413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); 23132736071ea3a46f90e65c93418961611d96c10ab9John McCall 231431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattnerprivate: 231529e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar void EmitReturnOfRValue(RValue RV, QualType Ty); 231629e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 23175627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty 23185627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// from function arguments into \arg Dst. See ABIArgInfo::Expand. 23195627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// 23205627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \param AI - The first function argument of the expansion. 23215627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \return The argument following the last expanded function 23225627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// argument. 23230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump llvm::Function::arg_iterator 23245627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeFromArgs(QualType Ty, LValue Dst, 23255627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator AI); 23265627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 23270dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg 23280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// Ty, into individual arguments on the provided vector \arg Args. See 23290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ABIArgInfo::Expand. 23300dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void ExpandTypeToArgs(QualType Ty, RValue Src, 2331686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<llvm::Value*, 16> &Args, 2332811bf3669f4d82c57fe3cd3c49050fdbc95d0affChris Lattner llvm::FunctionType *IRFuncTy); 2333c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson 23341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value* EmitAsmInput(const AsmStmt &S, 2335b84e8a670ad1d00c0a34295c42ac700cdde04815Daniel Dunbar const TargetInfo::ConstraintInfo &Info, 2336c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson const Expr *InputExpr, std::string &ConstraintStr); 23370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 23386d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman llvm::Value* EmitAsmInputLValue(const AsmStmt &S, 23396d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman const TargetInfo::ConstraintInfo &Info, 23406d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman LValue InputValue, QualType InputType, 23416d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman std::string &ConstraintStr); 23426d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman 23430139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson /// EmitCallArgs - Emit call arguments for a function. 23441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// The CallArgTypeInfo parameter is used for iterating over the known 2345af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson /// argument types of the function being called. 2346af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson template<typename T> 2347af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, 23480139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 2349af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator ArgEnd) { 2350af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator Arg = ArgBeg; 2351af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson 2352af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // First, use the argument types that the type info knows about 2353af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson if (CallArgTypeInfo) { 2354af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), 2355af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { 235644b0a3e858af7b19f489619e52cd58970611cd15Eli Friedman assert(Arg != ArgEnd && "Running over edge of argument list!"); 2357af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson QualType ArgType = *I; 2358745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#ifndef NDEBUG 2359745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ActualArgType = Arg->getType(); 2360745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgType->isPointerType() && ActualArgType->isPointerType()) { 23619cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ActualBaseType = 2362745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType->getAs<PointerType>()->getPointeeType(); 23639cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ArgBaseType = 2364745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ArgType->getAs<PointerType>()->getPointeeType(); 2365745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgBaseType->isVariableArrayType()) { 2366745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (const VariableArrayType *VAT = 2367745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getAsVariableArrayType(ActualBaseType)) { 2368745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (!VAT->getSizeExpr()) 2369745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType = ArgType; 2370745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2371745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2372745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2373af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). 23741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump getTypePtr() == 2375745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getCanonicalType(ActualArgType).getTypePtr() && 2376af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "type mismatch in call argument!"); 2377745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#endif 2378413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, ArgType); 2379af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 23801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Either we've emitted all the call args, or we have a call to a 2382af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // variadic function. 23831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && 2384af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "Extra arguments in non-variadic function!"); 23851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2386af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 23871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2388af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // If we still have any arguments, emit them using the type of the argument. 2389413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall for (; Arg != ArgEnd; ++Arg) 2390413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, Arg->getType()); 2391af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 2392492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall 2393492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall const TargetCodeGenInfo &getTargetHooks() const { 2394492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall return CGM.getTargetCodeGenInfo(); 2395492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall } 2396744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2397744016dde06fcffd50931e94a98c850f8b12cd87John McCall void EmitDeclMetadata(); 2398f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall 2399f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall CodeGenModule::ByrefHelpers * 24002acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner buildByrefHelpers(llvm::StructType &byrefType, 2401f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall const AutoVarEmission &emission); 24025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 24031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2404150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// Helper class with most of the code for saving a value for a 2405150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// conditional expression cleanup. 2406804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingLLVMValue { 2407150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; 2408150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2409150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Answer whether the given value needs extra work to be saved. 2410150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(llvm::Value *value) { 2411150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's not an instruction, we don't need to save. 2412150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!isa<llvm::Instruction>(value)) return false; 2413150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2414150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's an instruction in the entry block, we don't need to save. 2415150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); 2416150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return (block != &block->getParent()->getEntryBlock()); 2417150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2418150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2419150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Try to save the given value. 2420150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { 2421150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!needsSaving(value)) return saved_type(value, false); 2422150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2423150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // Otherwise we need an alloca. 2424150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::Value *alloca = 2425150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); 2426150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.Builder.CreateStore(value, alloca); 2427150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2428150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return saved_type(alloca, true); 2429150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2430150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2431150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { 2432150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!value.getInt()) return value.getPointer(); 2433150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return CGF.Builder.CreateLoad(value.getPointer()); 2434150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2435150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2436150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2437804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A partial specialization of DominatingValue for llvm::Values that 2438804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// might be llvm::Instructions. 2439804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { 2440804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef T *type; 2441804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2442804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); 2443804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2444804b807ea918184d6de63bd745e1ff75a9bfc679John McCall}; 2445804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2446804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A specialization of DominatingValue for RValue. 2447804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <> struct DominatingValue<RValue> { 2448804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef RValue type; 2449804b807ea918184d6de63bd745e1ff75a9bfc679John McCall class saved_type { 2450804b807ea918184d6de63bd745e1ff75a9bfc679John McCall enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, 2451804b807ea918184d6de63bd745e1ff75a9bfc679John McCall AggregateAddress, ComplexAddress }; 2452804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2453804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::Value *Value; 2454804b807ea918184d6de63bd745e1ff75a9bfc679John McCall Kind K; 2455804b807ea918184d6de63bd745e1ff75a9bfc679John McCall saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} 2456804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2457804b807ea918184d6de63bd745e1ff75a9bfc679John McCall public: 2458804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(RValue value); 2459804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, RValue value); 2460804b807ea918184d6de63bd745e1ff75a9bfc679John McCall RValue restore(CodeGenFunction &CGF); 2461804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2462804b807ea918184d6de63bd745e1ff75a9bfc679John McCall // implementations in CGExprCXX.cpp 2463804b807ea918184d6de63bd745e1ff75a9bfc679John McCall }; 2464804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2465804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(type value) { 2466804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::needsSaving(value); 2467804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2468804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, type value) { 2469804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::save(CGF, value); 2470804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2471150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2472804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return value.restore(CGF); 2473150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2474150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2475150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 24765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace CodeGen 24775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 24785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 24795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 2480