CodeGenFunction.h revision d768e9d29abe1ac1ccc3ed63f2dce835d9bab342
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" 24481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/DenseMap.h" 25481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/SmallVector.h" 26481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/Support/ValueHandle.h" 2769243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson#include "CodeGenModule.h" 2845d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar#include "CGBuilder.h" 298f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CGValue.h" 308f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace llvm { 32c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class BasicBlock; 33f21efe9088a0b3eda1209d1706529f6cb2073092Benjamin Kramer class LLVMContext; 34dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall class MDNode; 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Module; 36898d508d4c9e9d45914952473e39196b20830a9fDaniel Dunbar class SwitchInst; 37259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar class Twine; 38ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar class Value; 39f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class CallSite; 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 438d308384a220c7dc81755c47cdcbdd87dac25d5bDevang Patel class APValue; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class ASTContext; 457267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson class CXXDestructorDecl; 46ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith class CXXForRangeStmt; 476815e941998659a55c20c147861b0f437928c3d8Anders Carlsson class CXXTryStmt; 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Decl; 49ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner class LabelDecl; 50c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class EnumConstantDecl; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class FunctionDecl; 5272564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor class FunctionProtoType; 53c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class LabelStmt; 54679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian class ObjCContainerDecl; 5529e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCInterfaceDecl; 5629e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCIvarDecl; 57391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner class ObjCMethodDecl; 58fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian class ObjCImplementationDecl; 59af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar class ObjCPropertyImplDecl; 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class TargetInfo; 61492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall class TargetCodeGenInfo; 62c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class VarDecl; 6316f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCForCollectionStmt; 6416f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtTryStmt; 6516f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtThrowStmt; 6616f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtSynchronizedStmt; 67f85e193739c953358c865005855253af4f68a497John McCall class ObjCAutoreleasePoolStmt; 685549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace CodeGen { 70b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel class CodeGenTypes; 71e896d98548b02223c7740d807a0aa6e20fba7079Anders Carlsson class CGDebugInfo; 72bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar class CGFunctionInfo; 730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump class CGRecordLayout; 74ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall class CGBlockInfo; 754c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall class CGCXXABI; 76d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFlags; 77d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFieldFlags; 780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 79f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A branch fixup. These are required when emitting a goto to a 80f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// label which hasn't been emitted yet. The goto is optimistically 81f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// emitted as a branch to the basic block for the label, and (if it 82f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// occurs in a scope with non-trivial cleanups) a fixup is added to 83f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// the innermost cleanup. When a (normal) cleanup is popped, any 84f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// unresolved fixups in that scope are threaded through the cleanup. 85f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallstruct BranchFixup { 86ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The block containing the terminator which needs to be modified 87ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// into a switch if this fixup is resolved into the current scope. 88ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// If null, LatestBranch points directly to the destination. 89ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *OptimisticBranchBlock; 90f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 91ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The ultimate destination of the branch. 92f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 93f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// This can be set to null to indicate that this fixup was 94f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// successfully resolved. 95f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Destination; 96f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 97ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The destination index value. 98ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned DestinationIndex; 99ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 100ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The initial branch of the fixup. 101ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BranchInst *InitialBranch; 102f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 103f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 104804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct InvariantValue { 105150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T type; 106150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T saved_type; 107150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(type value) { return false; } 108150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, type value) { return value; } 109150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { return value; } 110150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 111804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 112804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A metaprogramming class for ensuring that a value will dominate an 113804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// arbitrary position in a function. 114804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue : InvariantValue<T> {}; 115804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 116804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T, bool mightBeInstruction = 117804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::is_base_of<llvm::Value, T>::value && 118804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::Constant, T>::value && 119804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::BasicBlock, T>::value> 120804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingPointer; 121804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,false> : InvariantValue<T*> {}; 122804b807ea918184d6de63bd745e1ff75a9bfc679John McCall// template <class T> struct DominatingPointer<T,true> at end of file 123804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 124804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue<T*> : DominatingPointer<T> {}; 125150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 126cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCallenum CleanupKind { 127cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall EHCleanup = 0x1, 128cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalCleanup = 0x2, 129cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalAndEHCleanup = EHCleanup | NormalCleanup, 130cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 131cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveCleanup = 0x4, 132cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveEHCleanup = EHCleanup | InactiveCleanup, 133cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalCleanup = NormalCleanup | InactiveCleanup, 134cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup 135cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall}; 136da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 137f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A stack of scopes which respond to exceptions, including cleanups 138f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// and catch blocks. 139f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallclass EHScopeStack { 140f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 141f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A saved depth on the scope stack. This is necessary because 142f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushing scopes onto the stack invalidates iterators. 143f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class stable_iterator { 144f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend class EHScopeStack; 145f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 146f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Offset from StartOfData to EndOfBuffer. 147f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ptrdiff_t Size; 148f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 149f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator(ptrdiff_t Size) : Size(Size) {} 150f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 151f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall public: 152f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator invalid() { return stable_iterator(-1); } 153f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator() : Size(-1) {} 154f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 155f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool isValid() const { return Size >= 0; } 156f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 157838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope encloses I. 158838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false if I is invalid. 159838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 160ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool encloses(stable_iterator I) const { return Size <= I.Size; } 161838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall 162838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope strictly encloses I: that is, 163838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// if it encloses I and is not I. 164838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false is I is invalid. 165838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 166ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } 1671bda662cb37d9fe24be4b3cf8ea0f4e550e1f889John McCall 168f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator==(stable_iterator A, stable_iterator B) { 169f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size == B.Size; 170f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 171f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator!=(stable_iterator A, stable_iterator B) { 172f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size != B.Size; 173f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 174f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 175f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1761f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Information for lazily generating a cleanup. Subclasses must be 1771f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// POD-like: cleanups will not be destructed, and they will be 1781f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// allocated on the cleanup stack and freely copied and moved 1791f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// around. 180da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 1811f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Cleanup implementations should generally be declared in an 182da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// anonymous namespace. 1831f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall class Cleanup { 184da65ea86482bc116906edfb9ba1d7124f76cc867John McCall public: 1853e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // Anchor the construction vtable. We use the destructor because 1863e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // gcc gives an obnoxious warning if there are virtual methods 1873e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // with an accessible non-virtual destructor. Unfortunately, 1883e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // declaring this destructor makes it non-trivial, but there 1893e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // doesn't seem to be any other way around this warning. 1903e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // 1913e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // This destructor will never be called. 1921f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall virtual ~Cleanup(); 1933e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall 194da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Emit the cleanup. For normal cleanups, this is run in the 195da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// same EH context as when the cleanup was pushed, i.e. the 196da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// immediately-enclosing context of the cleanup scope. For 197da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// EH cleanups, this is run in a terminate context. 198da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 199da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // \param IsForEHCleanup true if this is for an EH cleanup, false 200da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// if for a normal cleanup. 201da65ea86482bc116906edfb9ba1d7124f76cc867John McCall virtual void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) = 0; 202da65ea86482bc116906edfb9ba1d7124f76cc867John McCall }; 203da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 2043ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// UnconditionalCleanupN stores its N parameters and just passes 2053ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// them to the real cleanup function. 2063ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 2073ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class UnconditionalCleanup1 : public Cleanup { 2083ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall A0 a0; 209150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 2103ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall UnconditionalCleanup1(A0 a0) : a0(a0) {} 2113ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 2123ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall T::Emit(CGF, IsForEHCleanup, a0); 2133ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 214150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 215150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 216150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 217150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class UnconditionalCleanup2 : public Cleanup { 218150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall A0 a0; A1 a1; 2194bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall public: 220150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall UnconditionalCleanup2(A0 a0, A1 a1) : a0(a0), a1(a1) {} 221150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 222150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall T::Emit(CGF, IsForEHCleanup, a0, a1); 223150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 224150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 225150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 226150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// ConditionalCleanupN stores the saved form of its N parameters, 227150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// then restores them and performs the cleanup. 2283ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 2293ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup1 : public Cleanup { 230804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 2313ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall A0_saved a0_saved; 2323ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 2333ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 234804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 2353ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall T::Emit(CGF, IsForEHCleanup, a0); 2363ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 2373ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 2383ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall public: 2393ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup1(A0_saved a0) 2403ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0) {} 2413ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall }; 2423ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 243150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 2443ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup2 : public Cleanup { 245804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 246804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A1>::saved_type A1_saved; 2474bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A0_saved a0_saved; 2484bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A1_saved a1_saved; 249150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2503ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 251804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 252804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 253150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall T::Emit(CGF, IsForEHCleanup, a0, a1); 254150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 255150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 256150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 2573ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup2(A0_saved a0, A1_saved a1) 2583ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0), a1_saved(a1) {} 259150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 260150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 261f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallprivate: 262f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // The implementation for this class is in CGException.h and 263f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // CGException.cpp; the definition is here because it's used as a 264f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // member of CodeGenFunction. 265f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 266f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The start of the scope-stack buffer, i.e. the allocated pointer 267f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// for the buffer. All of these pointers are either simultaneously 268f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// null or simultaneously valid. 269f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfBuffer; 270f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 271f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The end of the buffer. 272f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *EndOfBuffer; 273f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 274f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The first valid entry in the buffer. 275f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfData; 276f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 277f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost normal cleanup on the stack. 278f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostNormalCleanup; 279f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 280f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost EH cleanup on the stack. 281f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostEHCleanup; 282f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 283f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The number of catches on the stack. 284f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned CatchDepth; 285f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 286ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The current EH destination index. Reset to FirstCatchIndex 287ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// whenever the last EH cleanup is popped. 288ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextEHDestIndex; 289ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall enum { FirstEHDestIndex = 1 }; 290ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 291f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The current set of branch fixups. A branch fixup is a jump to 292f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// an as-yet unemitted label, i.e. a label for which we don't yet 293f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// know the EH stack depth. Whenever we pop a cleanup, we have 294f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to thread all the current branch fixups through it. 295f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 296f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Fixups are recorded as the Use of the respective branch or 297f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// switch statement. The use points to the final destination. 298f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// When popping out of a cleanup, these uses are threaded through 299f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup and adjusted to point to the new cleanup. 300f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 301f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Note that branches are allowed to jump into protected scopes 302f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// in certain situations; e.g. the following code is legal: 303f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// struct A { ~A(); }; // trivial ctor, non-trivial dtor 304f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// goto foo; 305f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A a; 306f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// foo: 307f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// bar(); 308f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<BranchFixup, 8> BranchFixups; 309f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 310f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *allocate(size_t Size); 311f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 3121f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *pushCleanup(CleanupKind K, size_t DataSize); 313da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 314f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 315f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), 316f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostNormalCleanup(stable_end()), 317f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostEHCleanup(stable_end()), 318ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall CatchDepth(0), NextEHDestIndex(FirstEHDestIndex) {} 319f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~EHScopeStack() { delete[] StartOfBuffer; } 320f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 321da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // Variadic templates would make this not terrible. 322da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 323da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 3248e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T> 3251f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind) { 3261f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3271f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(); 3288e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3298e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3308e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3318e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 3328e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T, class A0> 3331f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0) { 3341f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3351f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0); 3368e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3378e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3388e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3398e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 340da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1> 3411f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { 3421f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3431f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1); 344da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 345da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 346da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 347da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 348da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2> 3491f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { 3501f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3511f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2); 352da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 353da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 354da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 355da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 356da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2, class A3> 3571f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { 3581f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3591f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); 360da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 361da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 362da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 36377199713ab56f87ffad9a535ff2a0877704eed87John McCall /// Push a lazily-created cleanup on the stack. 36477199713ab56f87ffad9a535ff2a0877704eed87John McCall template <class T, class A0, class A1, class A2, class A3, class A4> 3651f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { 3661f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3671f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); 36877199713ab56f87ffad9a535ff2a0877704eed87John McCall (void) Obj; 36977199713ab56f87ffad9a535ff2a0877704eed87John McCall } 37077199713ab56f87ffad9a535ff2a0877704eed87John McCall 3717d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall // Feel free to add more variants of the following: 3727d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 3737d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Push a cleanup with non-constant storage requirements on the 3747d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. The cleanup type must provide an additional static method: 3757d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// static size_t getExtraSize(size_t); 3767d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The argument to this method will be the value N, which will also 3777d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// be passed as the first argument to the constructor. 3787d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 3797d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The data stored in the extra storage must obey the same 3807d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// restrictions as normal cleanup member data. 3817d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 3827d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The pointer returned from this method is valid until the cleanup 3837d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack is modified. 3847d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall template <class T, class A0, class A1, class A2> 3857d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { 3867d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); 3877d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall return new (Buffer) T(N, a0, a1, a2); 3887d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall } 3897d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 390f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a cleanup scope off the stack. This should only be called 391f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// by CodeGenFunction::PopCleanupBlock. 392f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCleanup(); 393f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 394f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a set of catch handlers on the stack. The catch is 395f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// uninitialized and will need to have the given number of handlers 396f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// set on it. 397f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHCatchScope *pushCatch(unsigned NumHandlers); 398f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 399f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a catch scope off the stack. 400f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCatch(); 401f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 402f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push an exceptions filter on the stack. 403f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHFilterScope *pushFilter(unsigned NumFilters); 404f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 405f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops an exceptions filter off the stack. 406f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popFilter(); 407f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 408f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a terminate handler on the stack. 409f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void pushTerminate(); 410f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 411f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a terminate handler off the stack. 412f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popTerminate(); 413f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 414f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether the exception-scopes stack is empty. 415f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool empty() const { return StartOfData == EndOfBuffer; } 416f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 417f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool requiresLandingPad() const { 418f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return (CatchDepth || hasEHCleanups()); 419f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 420f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 421f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any normal cleanups on the stack. 422f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasNormalCleanups() const { 423f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup != stable_end(); 424f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 425f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 426f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost normal cleanup on the stack, or 427f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stable_end() if there are no normal cleanups. 428f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostNormalCleanup() const { 429f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup; 430f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 431838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall stable_iterator getInnermostActiveNormalCleanup() const; // CGException.h 432f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 433f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any EH cleanups on the stack. 434f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasEHCleanups() const { 435f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostEHCleanup != stable_end(); 436f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 437f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 438f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost EH cleanup on the stack, or stable_end() 439f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// if there are no EH cleanups. 440f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostEHCleanup() const { 441f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostEHCleanup; 442f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 443838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall stable_iterator getInnermostActiveEHCleanup() const; // CGException.h 444f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 445f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// An unstable reference to a scope-stack depth. Invalidated by 446f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushes but not pops. 447f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class iterator; 448f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 449f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the innermost EH scope. 450f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator begin() const; 451f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 452f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the outermost EH scope. 453f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator end() const; 454f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 455f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the top of the EH stack. The 456f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// returned reference is valid until that scope is popped off the 457f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stack. 458f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stable_begin() const { 459f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(EndOfBuffer - StartOfData); 460f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 461f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 462f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the bottom of the EH stack. 463f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator stable_end() { 464f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(0); 465f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 466f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 467f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Translates an iterator into a stable_iterator. 468f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stabilize(iterator it) const; 469f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 470f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Finds the nearest cleanup enclosing the given iterator. 471f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns stable_iterator::invalid() if there are no such cleanups. 472f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getEnclosingEHCleanup(iterator it) const; 473f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 474f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Turn a stable reference to a scope depth into a unstable pointer 475f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to the EH stack. 476f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator find(stable_iterator save) const; 477f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 478f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Removes the cleanup pointed to by the given stable_iterator. 479f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void removeCleanup(stable_iterator save); 480f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 481f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Add a branch fixup to the current cleanup scope. 482f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &addBranchFixup() { 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); 484f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixups.push_back(BranchFixup()); 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups.back(); 486f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 487f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 488f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned getNumBranchFixups() const { return BranchFixups.size(); } 489f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &getBranchFixup(unsigned I) { 490f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(I < getNumBranchFixups()); 491f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups[I]; 492f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 493f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 494ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Pops lazily-removed fixups from the end of the list. This 495ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// should only be called by procedures which have just popped a 496ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// cleanup or resolved one or more fixups. 497ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void popNullFixups(); 498ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 499ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Clears the branch-fixups list. This should only be called by 5008abdbd8118e37e759d1ce3f5814ee0a24b1589e8John McCall /// ResolveAllBranchFixups. 501ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void clearFixups() { BranchFixups.clear(); } 502ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 503ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Gets the next EH destination index. 504ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getNextEHDestIndex() { return NextEHDestIndex++; } 505f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 506f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CodeGenFunction - This class organizes the per-function state that is used 5085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// while generating LLVM code. 5095936e33bf74dd6bf126ceee0f6169a2593d03a69John McCallclass CodeGenFunction : public CodeGenTypeCache { 5108a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT 5118a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT 5124c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 5134c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall friend class CGCXXABI; 514bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattnerpublic: 515ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// A jump destination is an abstract label, branching to which may 516ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// require a jump out through normal cleanups. 517f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct JumpDest { 518ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest() : Block(0), ScopeDepth(), Index(0) {} 519ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest(llvm::BasicBlock *Block, 520ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 521ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 522ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 523ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 524ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 525ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 526ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 527ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 5289cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 529ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 530f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Block; 531f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator ScopeDepth; 532ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 533ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall }; 534ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 535ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// An unwind destination is an abstract label, branching to which 536ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// may require a jump out through EH cleanups. 537ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall struct UnwindDest { 538ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest() : Block(0), ScopeDepth(), Index(0) {} 539ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest(llvm::BasicBlock *Block, 540ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 541ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 542ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 543ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 544ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 545ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 546ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 547ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 548ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 549ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 550ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *Block; 551ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator ScopeDepth; 552ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 553f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 554f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenModule &CGM; // Per-module state. 556444be7366d0a1e172c0290a1ea54c1cb16b5947cDaniel Dunbar const TargetInfo &Target; 5570dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 55858dee10ed2eee34035f62d1c2d32b3639e9182f8Chris Lattner typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; 55945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 5600dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 561b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurFuncDecl - Holds the Decl for the current function or ObjC method. 562b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// This excludes BlockDecls. 5634111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner const Decl *CurFuncDecl; 564b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurCodeDecl - This is the inner-most code context, which includes blocks. 565b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner const Decl *CurCodeDecl; 56688b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar const CGFunctionInfo *CurFnInfo; 567391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner QualType FnRetTy; 5685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Function *CurFn; 5695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5706a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump /// CurGD - The GlobalDecl for the current function being compiled. 5716a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump GlobalDecl CurGD; 5726a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump 573f85e193739c953358c865005855253af4f68a497John McCall /// PrologueCleanupDepth - The cleanup depth enclosing all the 574f85e193739c953358c865005855253af4f68a497John McCall /// cleanups associated with the parameters. 575f85e193739c953358c865005855253af4f68a497John McCall EHScopeStack::stable_iterator PrologueCleanupDepth; 576f85e193739c953358c865005855253af4f68a497John McCall 5775ca2084cf9b529563209429857f01fdae9dcdfa5Daniel Dunbar /// ReturnBlock - Unified return block. 578f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ReturnBlock; 579f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5800dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ReturnValue - The temporary alloca to hold the return value. This is null 5810dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// iff the function has no return value. 582b17daf9ab790ae71aacad2cc4aa11cd8d86c25d1Eli Friedman llvm::Value *ReturnValue; 5830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 584ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// RethrowBlock - Unified rethrow block. 585ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest RethrowBlock; 586ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 5875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AllocaInsertPoint - This is an instruction in the entry block before which 5885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// we prefer to insert allocas. 589481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; 5900ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 5919c276ae0f24d4cee8f7954069d4b8eae45d0447dMike Stump bool CatchUndefined; 5929cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 593f85e193739c953358c865005855253af4f68a497John McCall /// In ARC, whether we should autorelease the return value. 594f85e193739c953358c865005855253af4f68a497John McCall bool AutoreleaseResult; 595f85e193739c953358c865005855253af4f68a497John McCall 596d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const CodeGen::CGBlockInfo *BlockInfo; 597d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *BlockPointer; 598d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 5993d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// \brief A mapping from NRVO variables to the flags used to indicate 6003d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// when the NRVO has been applied to this variable. 6013d91bbcdab155181556969cad6ec97014405acedDouglas Gregor llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; 6029cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 603f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack EHStack; 6040dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 605ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// i32s containing the indexes of the cleanup destinations. 606ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *NormalCleanupDest; 607ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *EHCleanupDest; 608ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 609ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextCleanupDestIndex; 610ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 611f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The exception slot. All landing pads write the current 612f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// exception pointer into this alloca. 613f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *ExceptionSlot; 6140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 61593c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// The selector slot. Under the MandatoryCleanup model, all 61693c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// landing pads write the current selector value into this alloca. 61793c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::AllocaInst *EHSelectorSlot; 61893c332a8ba2c193c435b293966d343dab15f555bJohn McCall 619f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Emits a landing pad for the current EH stack. 620f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *EmitLandingPad(); 6210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 622f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDestImpl(); 62399533834ba8f3658559f334e68a518ebb6388ceaMike Stump 6243ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// Set up the last cleaup that was pushed as a conditional 6253ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// full-expression cleanup. 6263ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void initFullExprCleanup(); 627150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 628150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T> 629804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<T>::saved_type saveValueInCond(T value) { 630804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return DominatingValue<T>::save(*this, value); 631150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 632150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 633f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 634f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// ObjCEHValueStack - Stack of Objective-C exception values, used for 635f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// rethrows. 636f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<llvm::Value*, 8> ObjCEHValueStack; 637bb66f9f2e454135b86462d121629275b6ac38e96Anders Carlsson 638d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// A class controlling the emission of a finally block. 639d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall class FinallyInfo { 640d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// Where the catchall's edge through the cleanup should go. 641d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall JumpDest RethrowDest; 642d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 643d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// A function to call to enter the catch. 644d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *BeginCatchFn; 645d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 646d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// An i1 variable indicating whether or not the @finally is 647d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// running for an exception. 648d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::AllocaInst *ForEHVar; 649d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump 650d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// An i8* variable into which the exception pointer to rethrow 651d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// has been saved. 652d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::AllocaInst *SavedExnVar; 653d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 654d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall public: 655d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall void enter(CodeGenFunction &CGF, const Stmt *Finally, 656d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, 657d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *rethrowFn); 658d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall void exit(CodeGenFunction &CGF); 659d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall }; 660f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 661150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 662150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// current full-expression. Safe against the possibility that 663150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// we're currently inside a conditionally-evaluated expression. 6643ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 6653ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0) { 6663ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // If we're not in a conditional branch, or if none of the 6673ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // arguments requires saving, then use the unconditional cleanup. 6683ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall if (!isInConditionalBranch()) { 6693ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall typedef EHScopeStack::UnconditionalCleanup1<T, A0> CleanupType; 6703ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall return EHStack.pushCleanup<CleanupType>(kind, a0); 6713ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 6723ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 673804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 6743ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6753ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; 6763ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved); 6773ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 6783ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 6793ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6803ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 6813ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// current full-expression. Safe against the possibility that 6823ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// we're currently inside a conditionally-evaluated expression. 683150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 684150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { 685150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If we're not in a conditional branch, or if none of the 686150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // arguments requires saving, then use the unconditional cleanup. 6873ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall if (!isInConditionalBranch()) { 688150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef EHScopeStack::UnconditionalCleanup2<T, A0, A1> CleanupType; 689150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return EHStack.pushCleanup<CleanupType>(kind, a0, a1); 690150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 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 700f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 701f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// complete-object destructor of an object of the given type at the 702f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// given address. Does nothing if T is not a C++ class type with a 703f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// non-trivial destructor. 704f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PushDestructorCleanup(QualType T, llvm::Value *Addr); 705f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 70681407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 70781407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// complete-object variant of the given destructor on the object at 70881407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// the given address. 70981407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall void PushDestructorCleanup(const CXXDestructorDecl *Dtor, 71081407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall llvm::Value *Addr); 71181407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall 712f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlock - Will pop the cleanup entry on the stack and 713f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// process all branch fixups. 714ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void PopCleanupBlock(bool FallThroughIsBranchThrough = false); 715f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 7167d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// DeactivateCleanupBlock - Deactivates the given cleanup block. 7177d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The block cannot be reactivated. Pops it if it's the top of the 7187d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. 7197d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 7207d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 7217d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// ActivateCleanupBlock - Activates an initially-inactive cleanup. 7227d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Cannot be used to resurrect a deactivated cleanup. 7237d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 724cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 725f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// \brief Enters a new scope for capturing cleanups, all of which 726f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// will be executed once the scope is exited. 727f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class RunCleanupsScope { 72801234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CodeGenFunction& CGF; 729f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator CleanupStackDepth; 73001234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor bool OldDidCallStackSave; 7315656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool PerformCleanup; 73201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 733f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope(const RunCleanupsScope &); // DO NOT IMPLEMENT 734f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope &operator=(const RunCleanupsScope &); // DO NOT IMPLEMENT 73501234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 73601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor public: 73701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Enter a new cleanup scope. 7389cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer explicit RunCleanupsScope(CodeGenFunction &CGF) 7399cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer : CGF(CGF), PerformCleanup(true) 7405656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor { 741f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CleanupStackDepth = CGF.EHStack.stable_begin(); 74201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor OldDidCallStackSave = CGF.DidCallStackSave; 7434ada2ca7d82dab68d3646f3eb6dcdfee072e8ea4Argyrios Kyrtzidis CGF.DidCallStackSave = false; 74401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 74501234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 74601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Exit this cleanup scope, emitting any accumulated 74701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// cleanups. 748f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~RunCleanupsScope() { 7495656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor if (PerformCleanup) { 7505656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 751f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 7525656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7535656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7545656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 7555656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Determine whether this scope requires any cleanups. 7565656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool requiresCleanups() const { 757f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return CGF.EHStack.stable_begin() != CleanupStackDepth; 7585656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7595656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 7605656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Force the emission of cleanups now, instead of waiting 7615656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// until this object is destroyed. 7625656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor void ForceCleanup() { 7635656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor assert(PerformCleanup && "Already forced cleanup"); 76401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 765f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 7665656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor PerformCleanup = false; 76701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 76801234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor }; 76901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 77044ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 771f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlocks - Takes the old cleanup stack size and emits 772f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup blocks that have been added. 773f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); 77444ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 775ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void ResolveBranchFixups(llvm::BasicBlock *Target); 776ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 777f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 778f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 779f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 780ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { 781413e67778d593215d2f2161a4e712c8568f1ddd0John McCall return JumpDest(Target, 782413e67778d593215d2f2161a4e712c8568f1ddd0John McCall EHStack.getInnermostNormalCleanup(), 783413e67778d593215d2f2161a4e712c8568f1ddd0John McCall NextCleanupDestIndex++); 784f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 785c71c845fe77ee1f891d60232ec320912d88557eeAnders Carlsson 786f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 787f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 788f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 789ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner JumpDest getJumpDestInCurrentScope(llvm::StringRef Name = llvm::StringRef()) { 790ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall return getJumpDestInCurrentScope(createBasicBlock(Name)); 791f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 792f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 793f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughCleanup - Emit a branch from the current insert 794f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// block through the normal cleanup handling code (if any) and then 795f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// on to \arg Dest. 796f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitBranchThroughCleanup(JumpDest Dest); 797b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner 798b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// isObviouslyBranchWithoutCleanups - Return true if a branch to the 799b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// specified destination obviously has no cleanups to run. 'false' is always 800b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// a conservatively correct answer for this method. 801b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; 802f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 803f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughEHCleanup - Emit a branch from the current 804f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// insert block through the EH cleanup handling code (if any) and 805f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// then on to \arg Dest. 806ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void EmitBranchThroughEHCleanup(UnwindDest Dest); 807ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 808ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// getRethrowDest - Returns the unified outermost-scope rethrow 809ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// destination. 810ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest getRethrowDest(); 8110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 812150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An object to manage conditionally-evaluated expressions. 813150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class ConditionalEvaluation { 814150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *StartBB; 8151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 816150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 817150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation(CodeGenFunction &CGF) 818150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : StartBB(CGF.Builder.GetInsertBlock()) {} 8199cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 820150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void begin(CodeGenFunction &CGF) { 821150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != this); 822150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!CGF.OutermostConditional) 823150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = this; 824150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 825150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 826150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void end(CodeGenFunction &CGF) { 827150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != 0); 828150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (CGF.OutermostConditional == this) 829150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 830150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 831150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 832150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Returns a block which will be executed prior to each 833150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// evaluation of the conditional code. 834150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *getStartingBlock() const { 835150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return StartBB; 836150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 837150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 8381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8393019c444c672938c57f5573840071ecd73425ee7John McCall /// isInConditionalBranch - Return true if we're currently emitting 8403019c444c672938c57f5573840071ecd73425ee7John McCall /// one branch or the other of a conditional expression. 841150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall bool isInConditionalBranch() const { return OutermostConditional != 0; } 842150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 843150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An RAII object to record that we're evaluating a statement 844150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// expression. 845150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class StmtExprEvaluation { 846150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CodeGenFunction &CGF; 847150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 848150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// We have to save the outermost conditional: cleanups in a 849150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// statement expression aren't conditional just because the 850150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// StmtExpr is. 851150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *SavedOutermostConditional; 852150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 853150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 854150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall StmtExprEvaluation(CodeGenFunction &CGF) 855150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { 856150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 857150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 858150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 859150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ~StmtExprEvaluation() { 860150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = SavedOutermostConditional; 861150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.EnsureInsertPoint(); 862150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 863150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 864e996ffd240f20a1048179d7727a6ee3227261921John McCall 86556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// An object which temporarily prevents a value from being 86656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// destroyed by aggressive peephole optimizations that assume that 86756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// all uses of a value have been realized in the IR. 86856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall class PeepholeProtection { 86956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::Instruction *Inst; 87056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class CodeGenFunction; 87156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 87256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall public: 87356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection() : Inst(0) {} 87456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall }; 87556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 876e996ffd240f20a1048179d7727a6ee3227261921John McCall /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. 877e996ffd240f20a1048179d7727a6ee3227261921John McCall class OpaqueValueMapping { 878e996ffd240f20a1048179d7727a6ee3227261921John McCall CodeGenFunction &CGF; 879e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *OpaqueValue; 88056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall bool BoundLValue; 88156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CodeGenFunction::PeepholeProtection Protection; 882e996ffd240f20a1048179d7727a6ee3227261921John McCall 883e996ffd240f20a1048179d7727a6ee3227261921John McCall public: 88456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool shouldBindAsLValue(const Expr *expr) { 88556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return expr->isGLValue() || expr->getType()->isRecordType(); 88656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 88756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 88856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Build the opaque value mapping for the given conditional 88956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// operator if it's the GNU ?: extension. This is a common 89056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// enough pattern that the convenience operator is really 89156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// helpful. 89256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 89356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 89456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *op) : CGF(CGF) { 89556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (isa<ConditionalOperator>(op)) { 89656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue = 0; 89756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BoundLValue = false; 89856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return; 89956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 90056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 90156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); 90256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall init(e->getOpaqueValue(), e->getCommon()); 90356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 90456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 905e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValueMapping(CodeGenFunction &CGF, 906e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *opaqueValue, 90756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue lvalue) 90856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : CGF(CGF), OpaqueValue(opaqueValue), BoundLValue(true) { 909e996ffd240f20a1048179d7727a6ee3227261921John McCall assert(opaqueValue && "no opaque value expression!"); 91056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(shouldBindAsLValue(opaqueValue)); 91156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initLValue(lvalue); 91256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 91356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 91456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 91556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const OpaqueValueExpr *opaqueValue, 91656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall RValue rvalue) 91756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : CGF(CGF), OpaqueValue(opaqueValue), BoundLValue(false) { 91856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(opaqueValue && "no opaque value expression!"); 91956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!shouldBindAsLValue(opaqueValue)); 92056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initRValue(rvalue); 921e996ffd240f20a1048179d7727a6ee3227261921John McCall } 922e996ffd240f20a1048179d7727a6ee3227261921John McCall 923e996ffd240f20a1048179d7727a6ee3227261921John McCall void pop() { 924e996ffd240f20a1048179d7727a6ee3227261921John McCall assert(OpaqueValue && "mapping already popped!"); 92556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall popImpl(); 926e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValue = 0; 927e996ffd240f20a1048179d7727a6ee3227261921John McCall } 928e996ffd240f20a1048179d7727a6ee3227261921John McCall 929e996ffd240f20a1048179d7727a6ee3227261921John McCall ~OpaqueValueMapping() { 93056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (OpaqueValue) popImpl(); 93156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 93256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 93356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall private: 93456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void popImpl() { 93556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (BoundLValue) 93656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueLValues.erase(OpaqueValue); 93756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall else { 93856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueRValues.erase(OpaqueValue); 93956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.unprotectFromPeepholes(Protection); 94056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 94156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 94256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 94356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void init(const OpaqueValueExpr *ov, const Expr *e) { 94456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue = ov; 94556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BoundLValue = shouldBindAsLValue(ov); 94656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(BoundLValue == shouldBindAsLValue(e) 94756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall && "inconsistent expression value kinds!"); 94856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (BoundLValue) 94956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initLValue(CGF.EmitLValue(e)); 95056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall else 95156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initRValue(CGF.EmitAnyExpr(e)); 95256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 95356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 95456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void initLValue(const LValue &lv) { 95556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueLValues.insert(std::make_pair(OpaqueValue, lv)); 95656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 95756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 95856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void initRValue(const RValue &rv) { 95956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // Work around an extremely aggressive peephole optimization in 96056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // EmitScalarConversion which assumes that all other uses of a 96156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // value are extant. 96256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Protection = CGF.protectFromPeepholes(rv); 96356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueRValues.insert(std::make_pair(OpaqueValue, rv)); 964e996ffd240f20a1048179d7727a6ee3227261921John McCall } 965e996ffd240f20a1048179d7727a6ee3227261921John McCall }; 966e220455a059d926953befe72857b9525273717efFariborz Jahanian 967e220455a059d926953befe72857b9525273717efFariborz Jahanian /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field 968e220455a059d926953befe72857b9525273717efFariborz Jahanian /// number that holds the value. 969e220455a059d926953befe72857b9525273717efFariborz Jahanian unsigned getByRefValueLLVMField(const ValueDecl *VD) const; 97052a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian 97152a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// BuildBlockByrefAddress - Computes address location of the 97252a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// variable which is declared as __block. 97352a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, 97452a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian const VarDecl *V); 9757f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerprivate: 976d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner CGDebugInfo *DebugInfo; 977aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel bool DisableDebugInfo; 97809429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 97993c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid 98093c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// calling llvm.stacksave for multiple VLAs in the same scope. 98193c332a8ba2c193c435b293966d343dab15f555bJohn McCall bool DidCallStackSave; 98293c332a8ba2c193c435b293966d343dab15f555bJohn McCall 983f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// IndirectBranch - The first time an indirect goto is seen we create a block 984f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// with an indirect branch. Every time we see the address of a label taken, 985f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// we add the label to the indirect goto. Every subsequent indirect goto is 986f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// codegen'd as a jump to the IndirectBranch's basic block. 987d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner llvm::IndirectBrInst *IndirectBranch; 9880ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 9890dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C 9900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// decls. 9916b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; 9926b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall DeclMapTy LocalDeclMap; 9935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LabelMap - This keeps track of the LLVM basic block for each C label. 995ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; 9960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 9970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // BreakContinueStack - This keeps track of where break and continue 998e4b6d342c29d5cb9d311756100df1603810fa892Anders Carlsson // statements should jump to. 999da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner struct BreakContinue { 1000f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BreakContinue(JumpDest Break, JumpDest Continue) 1001f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall : BreakBlock(Break), ContinueBlock(Continue) {} 10020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1003f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest BreakBlock; 1004f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ContinueBlock; 10050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump }; 1006da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner llvm::SmallVector<BreakContinue, 8> BreakContinueStack; 100718ccc7776ad6288c5f630dc7967fb99d099c9cd9Daniel Dunbar 10080dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// SwitchInsn - This is nearest current switch instruction. It is null if if 10090dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// current context is not in a switch. 101051b09f2c528c8460b5465c676173324e44176d62Devang Patel llvm::SwitchInst *SwitchInsn; 101151b09f2c528c8460b5465c676173324e44176d62Devang Patel 10120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// CaseRangeBlock - This block holds if condition check for last case 101380fd5f96e6805ac43aab99faabd5b4c8b19551b7Devang Patel /// statement range in current switch instruction. 1014c049e4f406a7f7179eba98659044a32508e53289Devang Patel llvm::BasicBlock *CaseRangeBlock; 1015c049e4f406a7f7179eba98659044a32508e53289Devang Patel 101656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// OpaqueLValues - Keeps track of the current set of opaque value 1017e996ffd240f20a1048179d7727a6ee3227261921John McCall /// expressions. 101856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; 101956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; 1020e996ffd240f20a1048179d7727a6ee3227261921John McCall 10210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // VLASizeMap - This keeps track of the associated size for each VLA type. 1022bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // We track this by the size expression rather than the type itself because 1023bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // in certain situations, like a const qualifier applied to an VLA typedef, 1024bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // multiple VLA types can share the same size expression. 10250dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // FIXME: Maybe this could be a stack of maps that is pushed/popped as we 10260dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // enter/leave scopes. 1027bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; 10280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1029f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A block containing a single 'unreachable' instruction. Created 1030f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// lazily by getUnreachableBlock(). 1031f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *UnreachableBlock; 10320dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1033f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXThisDecl - When generating code for a C++ member function, 1034f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// this will hold the implicit 'this' declaration. 10352b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson ImplicitParamDecl *CXXThisDecl; 10362504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXThisValue; 10371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1038f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXVTTDecl - When generating code for a base object constructor or 1039f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// base object destructor with virtual bases, this will hold the implicit 1040f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// VTT parameter. 1041f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson ImplicitParamDecl *CXXVTTDecl; 10422504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXVTTValue; 10439cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1044150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// OutermostConditional - Points to the outermost active 1045150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// conditional control. This is used so that we know if a 1046150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// temporary should be destroyed conditionally. 1047150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *OutermostConditional; 10481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10497dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson 10507dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM 10517dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// type as well as the field number that contains the actual data. 10529cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::DenseMap<const ValueDecl *, std::pair<const llvm::Type *, 10537dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson unsigned> > ByRefValueInfo; 10549cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1055f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *TerminateLandingPad; 1056182f383db1782af752ecaf607fdff72a8542088bMike Stump llvm::BasicBlock *TerminateHandler; 105783252dcfe61aaebcb6bc117e71dc12968729513fChris Lattner llvm::BasicBlock *TrapBB; 1058940670512d7c3d93389bb38a426abcb7ef44271eEli Friedman 10595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 10605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenFunction(CodeGenModule &cgm); 10610dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 10621e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall CodeGenTypes &getTypes() const { return CGM.getTypes(); } 1063f2aac84709c418189e476ad591848dad50291885John McCall ASTContext &getContext() const { return CGM.getContext(); } 1064aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel CGDebugInfo *getDebugInfo() { 1065aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel if (DisableDebugInfo) 1066aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return NULL; 1067aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return DebugInfo; 1068aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel } 1069aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void disableDebugInfo() { DisableDebugInfo = true; } 1070aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void enableDebugInfo() { DisableDebugInfo = false; } 1071aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel 1072f85e193739c953358c865005855253af4f68a497John McCall bool shouldUseFusedARCCalls() { 1073f85e193739c953358c865005855253af4f68a497John McCall return CGM.getCodeGenOpts().OptimizationLevel == 0; 1074f85e193739c953358c865005855253af4f68a497John McCall } 10755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1076d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const LangOptions &getLangOptions() const { return CGM.getLangOptions(); } 1077d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1078f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns a pointer to the function's exception object slot, which 1079f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// is assigned in every landing pad. 1080f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *getExceptionSlot(); 108193c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Value *getEHSelectorSlot(); 1082f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1083ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getNormalCleanupDestSlot(); 1084ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getEHCleanupDestSlot(); 1085ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 1086f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getUnreachableBlock() { 1087f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!UnreachableBlock) { 1088f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall UnreachableBlock = createBasicBlock("unreachable"); 1089f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); 1090f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1091f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return UnreachableBlock; 1092f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1093f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1094f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDest() { 1095f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!EHStack.requiresLandingPad()) return 0; 1096f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return getInvokeDestImpl(); 1097f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 10989834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1099d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } 110069243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson 11019834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 11029834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar // Objective-C 11039834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 11049834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1105391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner void GenerateObjCMethod(const ObjCMethodDecl *OMD); 1106af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 11070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void StartObjCMethod(const ObjCMethodDecl *MD, 11088d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel const ObjCContainerDecl *CD, 11098d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel SourceLocation StartLoc); 1110af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 11110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCGetter - Synthesize an Objective-C property getter function. 1112fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCGetter(ObjCImplementationDecl *IMP, 1113fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 11142846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian void GenerateObjCGetterBody(ObjCIvarDecl *Ivar, bool IsAtomic, bool IsStrong); 11152846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian void GenerateObjCAtomicSetterBody(ObjCMethodDecl *OMD, 11162846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ObjCIvarDecl *Ivar); 11172846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian 1118109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, 1119109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *MD, bool ctor); 1120af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 11210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCSetter - Synthesize an Objective-C property setter function 11220dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// for the given property. 1123fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCSetter(ObjCImplementationDecl *IMP, 1124fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 11250b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian bool IndirectObjCSetterArg(const CGFunctionInfo &FI); 112615bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IvarTypeWithAggrGCObjects(QualType Ty); 1127af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 11284e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 11294e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump // Block Bits 11304e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 11314e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 11326b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *EmitBlockLiteral(const BlockExpr *); 11332a7eb28397148079cbc8e54e8a3871ef01c4f4bcBlaine Garst llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, 113489ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const CGBlockInfo &Info, 11350892099dbc640720400a1d9decd2733a09d733e5Mike Stump const llvm::StructType *, 1136d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *BlockVarLayout); 11374e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1138564360be450b319aeafc26698be9811837bfb826Fariborz Jahanian llvm::Function *GenerateBlockFunction(GlobalDecl GD, 11396b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &Info, 11406cc88f78fd36d3511b89412b193494b3e423cbffMike Stump const Decl *OuterFuncDecl, 11416b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const DeclMapTy &ldm); 11424e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1143d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); 1144d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); 1145d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1146d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); 1147d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 11485af02db5a48476e0748f135369663080eae87c64John McCall class AutoVarEmission; 11495af02db5a48476e0748f135369663080eae87c64John McCall 11505af02db5a48476e0748f135369663080eae87c64John McCall void emitByrefStructureInit(const AutoVarEmission &emission); 11515af02db5a48476e0748f135369663080eae87c64John McCall void enterByrefCleanup(const AutoVarEmission &emission); 11525af02db5a48476e0748f135369663080eae87c64John McCall 11536b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *LoadBlockStruct() { 11546b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall assert(BlockPointer && "no block pointer set!"); 11556b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall return BlockPointer; 11566b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall } 11574e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1158ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockCXXThisPointer(const CXXThisExpr *E); 1159ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockDecl(const BlockDeclRefExpr *E); 1160ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall llvm::Value *GetAddrOfBlockDecl(const BlockDeclRefExpr *E) { 1161ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall return GetAddrOfBlockDecl(E->getDecl(), E->isByRef()); 1162ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall } 11636b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); 11646b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const llvm::Type *BuildByRefType(const VarDecl *var); 1165dab514fc30242c7afd6c03956e46136c400fb0d3Mike Stump 1166d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCode(GlobalDecl GD, llvm::Function *Fn, 1167d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo); 11680ff8bafde95f6fa51ccea70738c1b99db870bddcAnders Carlsson void StartFunction(GlobalDecl GD, QualType RetTy, 11697c086516f3cc9fba2733b1919973206c6ba4b171Daniel Dunbar llvm::Function *Fn, 1170d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo, 11712284ac9ec80299fcdefae9a2787cf85105a0f203Daniel Dunbar const FunctionArgList &Args, 11729c6082fe89c61af697f017aa80937581cc2128d8Tilmann Scheller SourceLocation StartLoc); 1173a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 11749fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitConstructorBody(FunctionArgList &Args); 11759fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitDestructorBody(FunctionArgList &Args); 11769fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitFunctionBody(FunctionArgList &Args); 1177a355e07454463b19829ac92ffd115a097faff0e0John McCall 11780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitReturnBlock - Emit the unified return block, trying to avoid its 11790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emission when possible. 11801c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar void EmitReturnBlock(); 11811c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar 11820dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// FinishFunction - Complete IR generation of the current function. It is 11830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// legal to call this function even if there is no current insertion point. 1184af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar void FinishFunction(SourceLocation EndLoc=SourceLocation()); 118517b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1186519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson /// GenerateThunk - Generate a thunk for the given method. 1187d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 1188d26bc76c98006609002d9930f8840490e88ac5b5John McCall GlobalDecl GD, const ThunkInfo &Thunk); 11899cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 11907dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 11917dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman GlobalDecl GD, const ThunkInfo &Thunk); 11927dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman 1193fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, 1194fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor FunctionArgList &Args); 11951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1196d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// InitializeVTablePointer - Initialize the vtable pointer of the given 1197d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// subobject. 1198d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// 11999cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointer(BaseSubobject Base, 1200b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1201d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1202d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson llvm::Constant *VTable, 1203d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson const CXXRecordDecl *VTableClass); 1204d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1205d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; 12069cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointers(BaseSubobject Base, 1207b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1208d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1209603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson bool BaseIsNonVirtualPrimaryBase, 1210603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson llvm::Constant *VTable, 1211603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson const CXXRecordDecl *VTableClass, 1212603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson VisitedVirtualBasesSetTy& VBases); 121377a259c6dbf582949af8a243b472c0c7faa373a6Eli Friedman 1214603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); 1215d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1216043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// GetVTablePtr - Return the Value of the vtable pointer member pointed 1217043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// to by This. 1218043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman llvm::Value *GetVTablePtr(llvm::Value *This, const llvm::Type *Ty); 1219d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 122050da2cadcc6da86abff6772de65280ace2cabc94John McCall /// EnterDtorCleanups - Enter the cleanups necessary to complete the 122150da2cadcc6da86abff6772de65280ace2cabc94John McCall /// given phase of destruction for a destructor. The end result 122250da2cadcc6da86abff6772de65280ace2cabc94John McCall /// should call destructors on members and base classes in reverse 122350da2cadcc6da86abff6772de65280ace2cabc94John McCall /// order of their construction. 122450da2cadcc6da86abff6772de65280ace2cabc94John McCall void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); 12251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12267255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// ShouldInstrumentFunction - Return true if the current function should be 12277255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumented with __cyg_profile_func_* calls 12287255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner bool ShouldInstrumentFunction(); 12297255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 12307255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// EmitFunctionInstrumentation - Emit LLVM code to call the specified 12317255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumentation function with the current function and the call site, if 12327255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// function instrumentation is enabled. 12337255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner void EmitFunctionInstrumentation(const char *Fn); 12347255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 1235be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky /// EmitMCountInstrumentation - Emit call to .mcount. 1236be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky void EmitMCountInstrumentation(); 1237be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky 12380dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionProlog - Emit the target specific LLVM code to load the 12390dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// arguments for the given function. This is also responsible for naming the 12400dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM function arguments. 124188b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar void EmitFunctionProlog(const CGFunctionInfo &FI, 124288b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Function *Fn, 124317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const FunctionArgList &Args); 124417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 12450dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionEpilog - Emit the target specific LLVM code to return the 12460dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// given temporary. 124735b21b884e5c3447a52a74d7ffaba966b07ac81fChris Lattner void EmitFunctionEpilog(const CGFunctionInfo &FI); 124817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1249cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitStartEHSpec - Emit the start of the exception spec. 1250cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitStartEHSpec(const Decl *D); 1251cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1252cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitEndEHSpec - Emit the end of the exception spec. 1253cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitEndEHSpec(const Decl *D); 1254cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1255f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateLandingPad - Return a landing pad that just calls terminate. 1256f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getTerminateLandingPad(); 1257f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1258f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateHandler - Return a handler (not a landing pad, just 1259f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a catch handler) that just calls terminate. This is used when 1260f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a terminate scope encloses a try. 12619b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump llvm::BasicBlock *getTerminateHandler(); 12629b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump 12638b1a343b6b360d63d5dc8a6beb841ce4414c1e00Daniel Dunbar const llvm::Type *ConvertTypeForMem(QualType T); 12645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const llvm::Type *ConvertType(QualType T); 1265bff225ecf77fb891596ecb1b27196310d268365eJohn McCall const llvm::Type *ConvertType(const TypeDecl *T) { 1266bff225ecf77fb891596ecb1b27196310d268365eJohn McCall return ConvertType(getContext().getTypeDeclType(T)); 1267bff225ecf77fb891596ecb1b27196310d268365eJohn McCall } 1268c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner 12690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LoadObjCSelf - Load the value of self. This function is only valid while 12700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// generating code for an Objective-C method. 1271c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner llvm::Value *LoadObjCSelf(); 12720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// TypeOfSelfObject - Return type of object that this self represents. 127445012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian QualType TypeOfSelfObject(); 12754111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 12765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// hasAggregateLLVMType - Return true if the specified AST type will map into 12775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an aggregate LLVM type or is void. 12785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool hasAggregateLLVMType(QualType T); 127955e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar 128055e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar /// createBasicBlock - Create an LLVM basic block. 1281d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::BasicBlock *createBasicBlock(llvm::StringRef name = "", 1282d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Function *parent = 0, 1283d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::BasicBlock *before = 0) { 128429ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#ifdef NDEBUG 1285d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); 128629ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#else 1287d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); 128829ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#endif 128955e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar } 12900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getBasicBlockForLabel - Return the LLVM basicblock that the specified 12925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// label maps to. 1293ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner JumpDest getJumpDestForLabel(const LabelDecl *S); 12940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1295f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// SimplifyForwardingBlocks - If the given basic block is only a branch to 1296f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// another basic block, simplify it. This assumes that no other code could 1297f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// potentially reference the basic block. 1298aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar void SimplifyForwardingBlocks(llvm::BasicBlock *BB); 1299aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar 13000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBlock - Emit the given block \arg BB and set it as the insert point, 13010dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// adding a fall-through branch from the current insert block if 13020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessary. It is legal to call this function even if there is no current 13030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 1304a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar /// 13050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// IsFinished - If true, indicates that the caller has finished emitting 13060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// branches to the given block and does not expect to emit code into it. This 13070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// means the block can be ignored if it is unreachable. 1308a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); 1309824e3bd76b2e32db2ec6e4d2d113413e518d1c63Daniel Dunbar 13100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBranch - Emit a branch to the specified basic block from the current 13110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insert block, taking care to avoid creation of branches from dummy 13120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// blocks. It is legal to call this function even if there is no current 13130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 13145e08ad3cc62ab94649959ae227a9a411a729bf49Daniel Dunbar /// 13150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function clears the current insertion point. The caller should follow 13160dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calls to this function with calls to Emit*Block prior to generation new 13170dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// code. 1318d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar void EmitBranch(llvm::BasicBlock *Block); 1319d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar 13200dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// HaveInsertPoint - True if an insertion point is defined. If not, this 13210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// indicates that the current code being emitted is unreachable. 13220dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump bool HaveInsertPoint() const { 1323a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar return Builder.GetInsertBlock() != 0; 1324a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 1325a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 13260dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint - Ensure that an insertion point is defined so that 13270dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emitted IR has a place to go. Note that by definition, if this function 13280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// creates a block then that block is unreachable; callers may do better to 13290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// detect when no insertion point is defined and simply skip IR generation. 1330a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar void EnsureInsertPoint() { 1331a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar if (!HaveInsertPoint()) 1332a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar EmitBlock(createBasicBlock()); 1333a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 13340dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1335488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar /// ErrorUnsupported - Print out an error that codegen doesn't support the 1336dc5e8268292046114ffe02e48773572a91a310f1Chris Lattner /// specified stmt yet. 133790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar void ErrorUnsupported(const Stmt *S, const char *Type, 133890df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError=false); 13395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 13415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Helpers 13425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 13430dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1344983e3d7dac99aed376939f1a4daadef98e09c3b9Daniel Dunbar LValue MakeAddrLValue(llvm::Value *V, QualType T, unsigned Alignment = 0) { 13453d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return LValue::MakeAddr(V, T, Alignment, getContext(), 13463d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman CGM.getTBAAInfo(T)); 13475cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar } 13485cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar 13495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CreateTempAlloca - This creates a alloca and inserts it into the entry 1350195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// block. The caller is responsible for setting an appropriate alignment on 1351195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// the alloca. 13525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::AllocaInst *CreateTempAlloca(const llvm::Type *Ty, 1353259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar const llvm::Twine &Name = "tmp"); 13540dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1355ac418162692a951ca3796d6830496a85a2d12493John McCall /// InitTempAlloca - Provide an initial value for the given alloca. 1356ac418162692a951ca3796d6830496a85a2d12493John McCall void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); 1357ac418162692a951ca3796d6830496a85a2d12493John McCall 13589bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// CreateIRTemp - Create a temporary IR object of the given type, with 13599bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// appropriate alignment. This routine should only be used when an temporary 13609bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// value needs to be stored into an alloca (for example, to avoid explicit 13619bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// PHI construction), but the type is the IR type, not the type appropriate 13629bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// for storing in memory. 1363121b3facb4e0585d23766f9c1e4fdf9018a4b217Chris Lattner llvm::AllocaInst *CreateIRTemp(QualType T, const llvm::Twine &Name = "tmp"); 13649bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar 1365195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// CreateMemTemp - Create a temporary memory object of the given type, with 1366195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// appropriate alignment. 1367121b3facb4e0585d23766f9c1e4fdf9018a4b217Chris Lattner llvm::AllocaInst *CreateMemTemp(QualType T, const llvm::Twine &Name = "tmp"); 1368195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar 1369558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// CreateAggTemp - Create a temporary memory object for the given 1370558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// aggregate type. 1371558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot CreateAggTemp(QualType T, const llvm::Twine &Name = "tmp") { 1372f85e193739c953358c865005855253af4f68a497John McCall return AggValueSlot::forAddr(CreateMemTemp(T, Name), T.getQualifiers(), 1373f85e193739c953358c865005855253af4f68a497John McCall false); 1374558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall } 1375558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall 1376d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall /// Emit a cast to void* in the appropriate address space. 1377d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *EmitCastToVoidPtr(llvm::Value *value); 1378d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 13795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateExprAsBool - Perform the usual unary conversions on the specified 13805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression and compare the result against zero, returning an Int1Ty value. 13815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Value *EvaluateExprAsBool(const Expr *E); 13825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13832a41637a995affa1563f4d82a8b026e326a2faa0John McCall /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. 13842a41637a995affa1563f4d82a8b026e326a2faa0John McCall void EmitIgnoredExpr(const Expr *E); 13852a41637a995affa1563f4d82a8b026e326a2faa0John McCall 13869b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// EmitAnyExpr - Emit code to compute the specified expression which can have 13879b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// any type. The result is returned as an RValue struct. If this is an 13889b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// aggregate expression, the aggloc/agglocvolatile arguments indicate where 13899b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// the result should be returned. 139049d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// 139149d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// \param IgnoreResult - True if the resulting value isn't used. 1392558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExpr(const Expr *E, 1393558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AggSlot = AggValueSlot::ignored(), 1394558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IgnoreResult = false); 1395d9363c3a80168283b3da518b4e17f545a6246857Devang Patel 13960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // EmitVAListRef - Emit a "reference" to a va_list; this is either the address 13970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // or the value of the expression, depending on how va_list is defined. 13984fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman llvm::Value *EmitVAListRef(const Expr *E); 13994fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman 14000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will 14010dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// always be accessible even if no aggregate location is provided. 1402558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExprToTemp(const Expr *E); 140346f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbar 140460d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitAnyExprToMem - Emits the code necessary to evaluate an 14053d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall /// arbitrary expression into the given memory location. 14063d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, 1407f85e193739c953358c865005855253af4f68a497John McCall Qualifiers Quals, bool IsInitializer); 14083d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall 140960d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitExprAsInit - Emits the code necessary to initialize a 141060d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// location in memory with the given initializer. 1411f85e193739c953358c865005855253af4f68a497John McCall void EmitExprAsInit(const Expr *init, const ValueDecl *D, 1412a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall LValue lvalue, bool capturedByInit); 141360d3365b46eb826fba44483583c0051ac5c41fe3John McCall 141427fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// EmitAggregateCopy - Emit an aggrate copy. 141527fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// 141627fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// \param isVolatile - True iff either the source or the destination is 141727fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// volatile. 14187482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, 141927fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump QualType EltTy, bool isVolatile=false); 14207482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar 142151b09f2c528c8460b5465c676173324e44176d62Devang Patel /// StartBlock - Start new block named N. If insert block is a dummy block 142251b09f2c528c8460b5465c676173324e44176d62Devang Patel /// then reuse it. 142351b09f2c528c8460b5465c676173324e44176d62Devang Patel void StartBlock(const char *N); 142451b09f2c528c8460b5465c676173324e44176d62Devang Patel 1425813733577d33ec56479667b49e1bff42dc6bba90Lauro Ramos Venancio /// GetAddrOfStaticLocalVar - Return the address of a static local variable. 14264c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD) { 14274c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return cast<llvm::Constant>(GetAddrOfLocalVar(BVD)); 14284c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 14294f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1430dde0a94120915fa925d1ffcdb997c7b44dc9fa21Anders Carlsson /// GetAddrOfLocalVar - Return the address of a local variable. 14314c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { 14324c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *Res = LocalDeclMap[VD]; 14334c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); 14344c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return Res; 14354c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 14360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 143756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueLValueMapping - Given an opaque value expression (which 143856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an l-value), return its mapping. 143956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { 144056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(OpaqueValueMapping::shouldBindAsLValue(e)); 144156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 144256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator 144356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueLValues.find(e); 144456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); 144556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return it->second; 144656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 144756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 144856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueRValueMapping - Given an opaque value expression (which 144956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an r-value), return its mapping. 145056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { 145156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!OpaqueValueMapping::shouldBindAsLValue(e)); 145256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 145356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator 145456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueRValues.find(e); 145556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); 1456e996ffd240f20a1048179d7727a6ee3227261921John McCall return it->second; 1457e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1458e996ffd240f20a1048179d7727a6ee3227261921John McCall 14594f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// getAccessedFieldNo - Given an encoded value and a result number, return 14604f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// the input field number being accessed. 14614f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); 14624f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1463ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); 14643d00fdc82fd550ae4bfbb2e700a1fc85bbd6d6fdChris Lattner llvm::BasicBlock *GetIndirectGotoBlock(); 14650ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 14661884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// EmitNullInitialization - Generate code to set a value of the given type to 14671884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// null, If the type contains data member pointers, they will be initialized 14681884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// to -1 in accordance with the Itanium C++ ABI. 14691884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); 1470ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1471ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // EmitVAArg - Generate code to get an argument from the passed in pointer 1472ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // and update it accordingly. The return value is a pointer to the argument. 1473ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // FIXME: We should be able to get rid of this method and use the va_arg 14740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // instruction in LLVM instead once it works well enough. 1475ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); 1476f666b7780d04186521adcaedb0e15dfa4d5e6933Anders Carlsson 1477f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// EmitVLASize - Generate code for any VLA size expressions that might occur 1478f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// in a variably modified type. If Ty is a VLA, will return the value that 1479f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// corresponds to the size in bytes of the VLA type. Will return 0 otherwise. 1480d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1481d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 148260d35413662ebdcd1d31e34a8a7c665eb6977f1eAnders Carlsson llvm::Value *EmitVLASize(QualType Ty); 14830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1484dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson // GetVLASize - Returns an LLVM value that corresponds to the size in bytes 1485dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson // of a variable length array type. 1486dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson llvm::Value *GetVLASize(const VariableArrayType *); 1487dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson 14885f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// LoadCXXThis - Load the value of 'this'. This function is only valid while 14895f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// generating code for an C++ member function. 14902504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXThis() { 14912504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXThisValue && "no 'this' value for this function"); 14922504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXThisValue; 14932504941793b549323f9d29c62507cf21d865fadeJohn McCall } 14941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1495c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have 1496c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// virtual bases. 14972504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXVTT() { 14982504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXVTTValue && "no VTT value for this function"); 14992504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXVTTValue; 15002504941793b549323f9d29c62507cf21d865fadeJohn McCall } 1501bff225ecf77fb891596ecb1b27196310d268365eJohn McCall 1502bff225ecf77fb891596ecb1b27196310d268365eJohn McCall /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a 15038561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson /// complete class to the given direct base. 15048561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson llvm::Value * 15058561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, 15068561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 15078561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Base, 15088561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson bool BaseIsVirtual); 1509a88ad5618fcb07c5374c79d6781a33234984b039Anders Carlsson 1510f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// GetAddressOfBaseClass - This function will add the necessary delta to the 1511f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// load of 'this' and returns address of the base class. 15129cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, 15138561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1514f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1515f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 151634a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson bool NullCheckValue); 151734a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson 1518a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, 15198561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1520f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1521f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 15225a0f49ebc83e7fe0da07b9964c44b0a7fae270cbAnders Carlsson bool NullCheckValue); 1523a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson 1524bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson llvm::Value *GetVirtualBaseClassOffset(llvm::Value *This, 1525bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *ClassDecl, 1526bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *BaseClassDecl); 15279cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1528c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, 1529c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall CXXCtorType CtorType, 1530c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall const FunctionArgList &Args); 1531059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // It's important not to confuse this and the previous function. Delegating 1532059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // constructors are the C++0x feature. The constructor delegate optimization 1533059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // is used to reduce duplication in the base and complete consturctors where 1534059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // they are substantially the same. 1535059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, 1536059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt const FunctionArgList &Args); 1537155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, 1538155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson bool ForVirtualBase, llvm::Value *This, 1539b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1540b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 154134999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 154234999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, 154334999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian llvm::Value *This, llvm::Value *Src, 154434999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgBeg, 154534999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgEnd); 15461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1547288dcaf329c49b01dacd5c1dd9f35609555feecdFariborz Jahanian void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1548569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson const ConstantArrayType *ArrayTy, 15495d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 15505d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 155159174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 155259174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 15539cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1554569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1555569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson llvm::Value *NumElements, 15565d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 15575d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 155859174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 155959174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 1560b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson 1561f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian void EmitCXXAggrDestructorCall(const CXXDestructorDecl *D, 1562f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian const ArrayType *Array, 1563f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian llvm::Value *This); 15641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 156572c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian void EmitCXXAggrDestructorCall(const CXXDestructorDecl *D, 156672c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian llvm::Value *NumElements, 156772c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian llvm::Value *This); 156872c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian 156902e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson llvm::Function *GenerateCXXAggrDestructorHelper(const CXXDestructorDecl *D, 157002e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson const ArrayType *Array, 157102e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson llvm::Value *This); 157288f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian 15737267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, 15748e6404ca28d6bbb76e97ea2a53a74816c2a74665Anders Carlsson bool ForVirtualBase, llvm::Value *This); 15759cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1576ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian void EmitNewArrayInitializer(const CXXNewExpr *E, llvm::Value *NewPtr, 1577ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian llvm::Value *NumElements); 15781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1579f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitCXXTemporary(const CXXTemporary *Temporary, llvm::Value *Ptr); 15801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1581a00703dccbdc6cc4a293db38477dea7db5538c7eAnders Carlsson llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); 158260e282cc1e508be327b0481cecedc206873cb86aAnders Carlsson void EmitCXXDeleteExpr(const CXXDeleteExpr *E); 15831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15844bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, 15854bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman QualType DeleteTy); 15864bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman 1587c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); 1588c849c052d6b4b70f2651c1969531861a5f230053Mike Stump llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); 1589c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump 1590b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump void EmitCheck(llvm::Value *, unsigned Size); 1591b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 1592dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, 1593dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 1594dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, 1595dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 15965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 15975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Declaration Emission 15985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 15990dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1600d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// EmitDecl - Emit a declaration. 1601d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1602d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 16035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDecl(const Decl &D); 1604d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1605b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitVarDecl - Emit a local variable declaration. 1606d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1607d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1608b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitVarDecl(const VarDecl &D); 1609d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1610f85e193739c953358c865005855253af4f68a497John McCall void EmitScalarInit(const Expr *init, const ValueDecl *D, 1611a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall LValue lvalue, bool capturedByInit); 16127acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall void EmitScalarInit(llvm::Value *init, LValue lvalue); 1613f85e193739c953358c865005855253af4f68a497John McCall 1614f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, 1615f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *Address); 1616f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1617b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitAutoVarDecl - Emit an auto variable declaration. 1618d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1619d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 162034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarDecl(const VarDecl &D); 162134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 162234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall class AutoVarEmission { 162334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall friend class CodeGenFunction; 162434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 162557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall const VarDecl *Variable; 162634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 162734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The alignment of the variable. 162834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall CharUnits Alignment; 162934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 163034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The address of the alloca. Null if the variable was emitted 163134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// as a global constant. 163234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *Address; 163334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 163434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *NRVOFlag; 163534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 163634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is a __block variable. 163734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsByRef; 163834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 163934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is of aggregate type and has a constant 164034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// initializer. 164134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsConstantAggregate; 164234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 164357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall struct Invalid {}; 164457b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall AutoVarEmission(Invalid) : Variable(0) {} 164557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 164634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission(const VarDecl &variable) 164757b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall : Variable(&variable), Address(0), NRVOFlag(0), 164834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall IsByRef(false), IsConstantAggregate(false) {} 164934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 165034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool wasEmittedAsGlobal() const { return Address == 0; } 165134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 165234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall public: 165357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } 165457b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 165534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Returns the address of the object within this declaration. 165634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Note that this does not chase the forwarding pointer for 165734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// __block decls. 165834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { 165934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall if (!IsByRef) return Address; 166034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 166134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall return CGF.Builder.CreateStructGEP(Address, 166257b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall CGF.getByRefValueLLVMField(Variable), 166357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall Variable->getNameAsString()); 166434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall } 166534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall }; 166634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); 166734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarInit(const AutoVarEmission &emission); 166834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarCleanups(const AutoVarEmission &emission); 1669d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1670b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitStaticVarDecl(const VarDecl &D, 1671b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalValue::LinkageTypes Linkage); 1672b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar 1673b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. 1674093ac461b37a573dcf226fa55faed96f318169b9Devang Patel void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); 16750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 167656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protectFromPeepholes - Protect a value that we're intending to 167756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// store to the side, but which will probably be used later, from 167856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// aggressive peepholing optimizations that might delete it. 167956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 168056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Pass the result to unprotectFromPeepholes to declare that 168156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protection is no longer required. 168256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 168356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// There's no particular reason why this shouldn't apply to 168456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// l-values, it's just that no existing peepholes work on pointers. 168556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection protectFromPeepholes(RValue rvalue); 168656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void unprotectFromPeepholes(PeepholeProtection protection); 168756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 16885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 16895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Statement Emission 16905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 16915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. 16930912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitStopPoint(const Stmt *S); 16940912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 16950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStmt - Emit the code for the statement \arg S. It is legal to call 16960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// this function even if there is no current insertion point. 16970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// 16980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function may clear the current insertion point; callers should use 16990dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint if they wish to subsequently generate code without first 17000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calling EmitBlock, EmitBranch, or EmitStmt. 17015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStmt(const Stmt *S); 1702a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 17030912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// EmitSimpleStmt - Try to emit a "simple" statement which does not 17040dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessarily require an insertion point or debug information; typically 17050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// because the statement amounts to a jump or a container of other 17060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// statements. 17070912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// 17080912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// \return True if the statement was handled. 17090912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar bool EmitSimpleStmt(const Stmt *S); 17100912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 17119b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, 1712558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AVS = AggValueSlot::ignored()); 1713a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 17140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitLabel - Emit the block for the given label. It is legal to call this 17150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// function even if there is no current insertion point. 1716ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. 1717a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 17185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitLabelStmt(const LabelStmt &S); 17195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitGotoStmt(const GotoStmt &S); 17200ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar void EmitIndirectGotoStmt(const IndirectGotoStmt &S); 17215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitIfStmt(const IfStmt &S); 17225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitWhileStmt(const WhileStmt &S); 17235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDoStmt(const DoStmt &S); 17245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitForStmt(const ForStmt &S); 17255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitReturnStmt(const ReturnStmt &S); 17265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDeclStmt(const DeclStmt &S); 17270912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitBreakStmt(const BreakStmt &S); 17280912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitContinueStmt(const ContinueStmt &S); 172951b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitSwitchStmt(const SwitchStmt &S); 173051b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitDefaultStmt(const DefaultStmt &S); 173151b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitCaseStmt(const CaseStmt &S); 1732c049e4f406a7f7179eba98659044a32508e53289Devang Patel void EmitCaseStmtRange(const CaseStmt &S); 1733fb1aeb804c08d5288a923fb278161783e6abdc66Anders Carlsson void EmitAsmStmt(const AsmStmt &S); 17340dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 17353d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); 173664d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); 173764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); 173810cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); 1739f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S); 17400dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 174193c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Constant *getUnwindResumeFn(); 174286a3a03667bdb0dcab7e6a2877dfd234b07a6d43Douglas Gregor llvm::Constant *getUnwindResumeOrRethrowFn(); 174359a7000a79118e4c140885ccbb2ac6a686a73092John McCall void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 174459a7000a79118e4c140885ccbb2ac6a686a73092John McCall void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 17459fc6a7774643a810c8501dae2323e863fefb623eJohn McCall 17466815e941998659a55c20c147861b0f437928c3d8Anders Carlsson void EmitCXXTryStmt(const CXXTryStmt &S); 1747ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith void EmitCXXForRangeStmt(const CXXForRangeStmt &S); 17489cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 17495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 17505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LValue Expression Emission 17515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 17525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 175313e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. 175413e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar RValue GetUndefRValue(QualType Ty); 175513e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar 1756ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E 1757ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// and issue an ErrorUnsupported style diagnostic (using the 1758ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// provided Name). 1759ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar RValue EmitUnsupportedRValue(const Expr *E, 1760ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar const char *Name); 1761ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar 17620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue 17630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an ErrorUnsupported style diagnostic (using the provided Name). 17646ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar LValue EmitUnsupportedLValue(const Expr *E, 17656ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar const char *Name); 17666ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar 17675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLValue - Emit code to compute a designator that specifies the location 17685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the expression. 17695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// This can return one of two things: a simple address or a bitfield 17715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// reference. In either case, the LLVM Value* in the LValue structure is 17725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// guaranteed to be an LLVM pointer type. 17735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a bitfield reference, nothing about the pointee type of 17755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the LLVM value is known: For example, it may not be a pointer to an 17765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// integer. 17775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a normal address, and if the lvalue's C type is fixed 17795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// size, this method guarantees that the returned pointer type will point to 17805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an LLVM type of the same size of the lvalue's type. If the lvalue has a 17815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// variable length type, this is not possible. 17825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitLValue(const Expr *E); 17840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1785b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// EmitCheckedLValue - Same as EmitLValue but additionally we generate 1786b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// checking code to guard against undefined behavior. This is only 1787b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// suitable when we know that the address will be used to access the 1788b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// object. 1789b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump LValue EmitCheckedLValue(const Expr *E); 1790b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 179126815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitToMemory - Change a scalar value from its value 179226815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its in-memory representation. 179326815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); 179426815d97c5743481e317f17a8d53a6819d061862John McCall 179526815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitFromMemory - Change a scalar value from its memory 179626815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its value representation. 179726815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); 179826815d97c5743481e317f17a8d53a6819d061862John McCall 17999d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitLoadOfScalar - Load a scalar value from an address, taking 18009d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 18019d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 180209429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, 18033d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman unsigned Alignment, QualType Ty, 18043d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 1805a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall llvm::Value *EmitLoadOfScalar(LValue lvalue); 18069d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 18079d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitStoreOfScalar - Store a scalar value to an address, taking 18089d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 18099d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 181009429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, 18113d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman bool Volatile, unsigned Alignment, QualType Ty, 18123d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 1813a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall void EmitStoreOfScalar(llvm::Value *value, LValue lvalue); 18149d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 18155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLoadOfLValue - Given an expression that represents a value lvalue, 18165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this method emits the address of the lvalue, then loads the result as an 18175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// rvalue, returning the rvalue. 18185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RValue EmitLoadOfLValue(LValue V, QualType LVType); 1819213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman RValue EmitLoadOfExtVectorElementLValue(LValue V, QualType LVType); 18203b8c22d93da1432b2d4cea779d14912645c93866Lauro Ramos Venancio RValue EmitLoadOfBitfieldLValue(LValue LV, QualType ExprType); 1821119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall RValue EmitLoadOfPropertyRefLValue(LValue LV, 1822119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall ReturnValueSlot Return = ReturnValueSlot()); 18230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 18245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitStoreThroughLValue - Store the specified rvalue into the specified 18255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lvalue, where both are guaranteed to the have the same type, and that type 18265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is 'Ty'. 18275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStoreThroughLValue(RValue Src, LValue Dst, QualType Ty); 1828213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst, 1829213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman QualType Ty); 1830119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall void EmitStoreThroughPropertyRefLValue(RValue Src, LValue Dst); 1831ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar 18320dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue - Store Src into Dst with same constraints as 18330dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue. 1834ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar /// 18350dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// \param Result [out] - If non-null, this will be set to a Value* for the 18360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// bit-field contents after the store, appropriate for use as the result of 18370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an assignment to the bit-field. 1838ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, QualType Ty, 1839ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar llvm::Value **Result=0); 18400dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 184183ce9d4a552987d34cbd500e983db8d770232379John McCall /// Emit an l-value for an assignment (simple or compound) of complex type. 184283ce9d4a552987d34cbd500e983db8d770232379John McCall LValue EmitComplexAssignmentLValue(const BinaryOperator *E); 18432a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); 184483ce9d4a552987d34cbd500e983db8d770232379John McCall 1845fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner // Note: only available for agg return types 184680e62c29fe21cd06c93eba6e72b7e32dca06fcf9Daniel Dunbar LValue EmitBinaryOperatorLValue(const BinaryOperator *E); 18472a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); 18485b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 184922c940ee588a420cd2e6c8f68be2ac3cc80061ffChristopher Lamb LValue EmitCallExprLValue(const CallExpr *E); 18505b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 18515b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar LValue EmitVAArgExprLValue(const VAArgExpr *E); 18525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitDeclRefLValue(const DeclRefExpr *E); 18535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitStringLiteralLValue(const StringLiteral *E); 1854eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); 1855d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner LValue EmitPredefinedLValue(const PredefinedExpr *E); 18565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitUnaryOpLValue(const UnaryOperator *E); 18575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); 1858213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); 1859b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel LValue EmitMemberExpr(const MemberExpr *E); 1860820bca41c3899374775d2a1dfc2ef2e22aaf1c7bFariborz Jahanian LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); 186106e863f2902b8ba55b056308875c19f7ba3dab25Eli Friedman LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); 186256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); 186375dfedaf702822c9e51a4f3c5d3ecf2d2ad99272Chris Lattner LValue EmitCastLValue(const CastExpr *E); 1864ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); 186503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E); 1866e996ffd240f20a1048179d7727a6ee3227261921John McCall LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); 18679cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 18682a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, 186929e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar const ObjCIvarDecl *Ivar); 1870a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall LValue EmitLValueForAnonRecordField(llvm::Value* Base, 187100eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const IndirectFieldDecl* Field, 1872a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall unsigned CVRQualifiers); 18730ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForField(llvm::Value* Base, const FieldDecl* Field, 1874e6d2a534851a649485cb087e9dfcaf8a65886858Anders Carlsson unsigned CVRQualifiers); 18759cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 187606a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that 187706a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// if the Field is a reference, this will return the address of the reference 187806a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// and not the address of the value stored in the reference. 18799cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer LValue EmitLValueForFieldInitialization(llvm::Value* Base, 188006a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson const FieldDecl* Field, 188106a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson unsigned CVRQualifiers); 18829cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 188345012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian LValue EmitLValueForIvar(QualType ObjectTy, 188445012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian llvm::Value* Base, const ObjCIvarDecl *Ivar, 188529e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar unsigned CVRQualifiers); 188629e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 18870ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForBitfield(llvm::Value* Base, const FieldDecl* Field, 1888598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 1889fd64bb635dc221baa19f81d5d2a084f7eb269f7fFariborz Jahanian 1890a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump LValue EmitBlockDeclRefLValue(const BlockDeclRefExpr *E); 1891a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump 1892b58d017f2b9eeed33f2ab3ede968b89cf5296bf2Anders Carlsson LValue EmitCXXConstructLValue(const CXXConstructExpr *E); 1893e61c9e80a108b5db7e5f0e702f0e455d737c6390Anders Carlsson LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); 18944765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall LValue EmitExprWithCleanupsLValue(const ExprWithCleanups *E); 1895c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); 18969cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 18970a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); 1898391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); 189985c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar LValue EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E); 1900654599454c8e6cc83b1b9b3af43c49c2f66a26cbChris Lattner LValue EmitStmtExprLValue(const StmtExpr *E); 19018bfd31f9dad09cd52225d868bbd92a9bebe87775Fariborz Jahanian LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); 190203b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); 1903189d6ef40eff11b83b2cda941d5ed89a5cef09b2John McCall void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); 190456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 19055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 1906883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner // Scalar Expression Emission 19075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 19085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 19090dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitCall - Generate a call of the given function, expecting the given 19100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// result type, and using the given argument list which specifies both the 19110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM arguments and the types they were derived from. 1912c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar /// 1913f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// \param TargetDecl - If given, the decl of the function in a direct call; 1914f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// used to set attributes on the call (noreturn, etc.). 191588b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar RValue EmitCall(const CGFunctionInfo &FnInfo, 191688b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Value *Callee, 1917f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson ReturnValueSlot ReturnValue, 1918c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const CallArgList &Args, 1919dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall const Decl *TargetDecl = 0, 19204b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction **callOrInvoke = 0); 19211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 192231777a2540879051a3c643b90e02c3fd3d315243Anders Carlsson RValue EmitCall(QualType FnType, llvm::Value *Callee, 1923d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue, 1924986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgBeg, 1925986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgEnd, 1926986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson const Decl *TargetDecl = 0); 19279cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitCallExpr(const CallExpr *E, 1928d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue = ReturnValueSlot()); 19291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1930f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 1931f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value * const *ArgBegin, 1932f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value * const *ArgEnd, 1933f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const llvm::Twine &Name = ""); 1934f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1935566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, 1936f0070dbae9535836ad41711081465dec2259786bMike Stump const llvm::Type *Ty); 19379cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, 193883eedd9fa800c273647c7a90465ea9c110f9d93cAnders Carlsson llvm::Value *This, const llvm::Type *Ty); 19392726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, 19402726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian NestedNameSpecifier *Qual, 19412726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian const llvm::Type *Ty); 1942ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian 1943ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, 1944ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian CXXDtorType Type, 1945771c678c04f5f685b4f188ec6c2fd88ad0f7457fFariborz Jahanian const CXXRecordDecl *RD); 1946566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson 1947b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson RValue EmitCXXMemberCall(const CXXMethodDecl *MD, 1948b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *Callee, 1949a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue, 1950b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *This, 1951c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson llvm::Value *VTT, 1952b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1953b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 1954a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, 1955a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 1956a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, 1957a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 19585549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 1959a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, 1960a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson const CXXMethodDecl *MD, 1961a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *This); 19620f294632f36459174199b77699e339715244b5abAnders Carlsson RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, 1963a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson const CXXMethodDecl *MD, 1964a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 19651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19669cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 19671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RValue EmitBuiltinExpr(const FunctionDecl *FD, 1968ef2abfee3ea16ec74942dc09e9e425f46aeb2582Daniel Dunbar unsigned BuiltinID, const CallExpr *E); 19695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1970a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); 197109429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 19720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call 19730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is unhandled by the current target. 1974f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 1975f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar 19762752c0137d95aa2f4ee1cdff4b564bac842e041bChris Lattner llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 19779cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *EmitNeonCall(llvm::Function *F, 197830d91718a676177f0d0d0210ce4fdb4f616df6e5Nate Begeman llvm::SmallVectorImpl<llvm::Value*> &O, 1979db3d4d036037f379f12643e067b229862d61e932Bob Wilson const char *name, 198061eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman unsigned shift = 0, bool rightshift = false); 1981cf55652cf668c1402eee0b12edd2e5a1bc34d7a1Bob Wilson llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); 1982464ccb68f22a7e1c0a2844551c16f721540c91c3Nate Begeman llvm::Value *EmitNeonShiftVector(llvm::Value *V, const llvm::Type *Ty, 198361eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman bool negateForRightShift); 19849cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1985aa51e513850688b7963efc62abf1eface7037602Bill Wendling llvm::Value *BuildVector(const llvm::SmallVectorImpl<llvm::Value*> &Ops); 1986564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); 1987564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 19880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1989ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); 19907f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); 19918fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); 1992ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, 1993ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 19948fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 1995f85e193739c953358c865005855253af4f68a497John McCall /// Retrieves the default cleanup kind for an ARC cleanup. 1996f85e193739c953358c865005855253af4f68a497John McCall /// Except under -fobjc-arc-eh, ARC cleanups are normal-only. 1997f85e193739c953358c865005855253af4f68a497John McCall CleanupKind getARCCleanupKind() { 1998f85e193739c953358c865005855253af4f68a497John McCall return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions 1999f85e193739c953358c865005855253af4f68a497John McCall ? NormalAndEHCleanup : NormalCleanup; 2000f85e193739c953358c865005855253af4f68a497John McCall } 2001f85e193739c953358c865005855253af4f68a497John McCall 2002f85e193739c953358c865005855253af4f68a497John McCall // ARC primitives. 2003f85e193739c953358c865005855253af4f68a497John McCall void EmitARCInitWeak(llvm::Value *value, llvm::Value *addr); 2004f85e193739c953358c865005855253af4f68a497John McCall void EmitARCDestroyWeak(llvm::Value *addr); 2005f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCLoadWeak(llvm::Value *addr); 2006f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCLoadWeakRetained(llvm::Value *addr); 2007f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreWeak(llvm::Value *value, llvm::Value *addr, 2008f85e193739c953358c865005855253af4f68a497John McCall bool ignored); 2009f85e193739c953358c865005855253af4f68a497John McCall void EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src); 2010f85e193739c953358c865005855253af4f68a497John McCall void EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src); 2011f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value); 2012f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value); 2013f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreStrong(LValue addr, QualType type, 2014f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *value, bool ignored); 2015f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreStrongCall(llvm::Value *addr, llvm::Value *value, 2016f85e193739c953358c865005855253af4f68a497John McCall bool ignored); 2017f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetain(QualType type, llvm::Value *value); 2018f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainNonBlock(llvm::Value *value); 2019f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainBlock(llvm::Value *value); 2020f85e193739c953358c865005855253af4f68a497John McCall void EmitARCRelease(llvm::Value *value, bool precise); 2021f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCAutorelease(llvm::Value *value); 2022f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value); 2023f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value); 2024f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value); 2025f85e193739c953358c865005855253af4f68a497John McCall 2026f85e193739c953358c865005855253af4f68a497John McCall std::pair<LValue,llvm::Value*> 2027f85e193739c953358c865005855253af4f68a497John McCall EmitARCStoreAutoreleasing(const BinaryOperator *e); 2028f85e193739c953358c865005855253af4f68a497John McCall std::pair<LValue,llvm::Value*> 2029f85e193739c953358c865005855253af4f68a497John McCall EmitARCStoreStrong(const BinaryOperator *e, bool ignored); 2030f85e193739c953358c865005855253af4f68a497John McCall 2031f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCProduceObject(QualType T, llvm::Value *Ptr); 2032f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr); 2033f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr); 2034f85e193739c953358c865005855253af4f68a497John McCall 2035f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainScalarExpr(const Expr *expr); 2036f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr); 2037f85e193739c953358c865005855253af4f68a497John McCall 2038f85e193739c953358c865005855253af4f68a497John McCall void PushARCReleaseCleanup(CleanupKind kind, QualType type, 2039f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *addr, bool precise); 2040f85e193739c953358c865005855253af4f68a497John McCall void PushARCWeakReleaseCleanup(CleanupKind kind, QualType type, 2041f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *addr); 2042f85e193739c953358c865005855253af4f68a497John McCall void PushARCFieldReleaseCleanup(CleanupKind cleanupKind, 2043f85e193739c953358c865005855253af4f68a497John McCall const FieldDecl *Field); 2044f85e193739c953358c865005855253af4f68a497John McCall void PushARCFieldWeakReleaseCleanup(CleanupKind cleanupKind, 2045f85e193739c953358c865005855253af4f68a497John McCall const FieldDecl *Field); 2046f85e193739c953358c865005855253af4f68a497John McCall 2047f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr); 2048f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCAutoreleasePoolPush(); 2049f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCMRRAutoreleasePoolPush(); 2050f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr); 2051f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr); 2052f85e193739c953358c865005855253af4f68a497John McCall 20534029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in 20544029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// expression. Will emit a temporary variable if E is not an LValue. 20559cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitReferenceBindingToExpr(const Expr* E, 205632f36baa6c8d491c374af622b4e3ac28d597453cAnders Carlsson const NamedDecl *InitializedDecl); 20573aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 2058883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 2059bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expression Emission 2060883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 2061bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner 2062bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expressions are broken into three classes: scalar, complex, aggregate. 20630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20640dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitScalarExpr - Emit the computation of the specified expression of LLVM 20650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// scalar type, returning the result. 206614c5cbf59cffee52275230922283a247de407712Anders Carlsson llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); 20670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20683707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 20693707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 20703707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, 20713707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner QualType DstTy); 20720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20734f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 20740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// complex type to the specified destination type, where the destination type 20750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is an LLVM scalar type. 20764f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, 20774f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy); 20780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2080558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// EmitAggExpr - Emit the computation of the specified expression 2081558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// of aggregate type. The result is computed into the given slot, 2082558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// which may be null to indicate that the value is not needed. 2083474e2fe4957e6e72cee36ed189eaf21878ad0e91Fariborz Jahanian void EmitAggExpr(const Expr *E, AggValueSlot AS, bool IgnoreResult = false); 20840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 208518aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// EmitAggExprToLValue - Emit the computation of the specified expression of 208618aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// aggregate type into a temporary LValue. 208718aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar LValue EmitAggExprToLValue(const Expr *E); 208818aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar 2089082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// EmitGCMemmoveCollectable - Emit special API for structs with object 2090082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// pointers. 2091082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, 209208c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 2093082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 2094b6ef18a2b06d6760459e1756a61f79ff496cee19Chris Lattner /// EmitComplexExpr - Emit the computation of the specified expression of 209523b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// complex type, returning the result. 2096b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall ComplexPairTy EmitComplexExpr(const Expr *E, 2097b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreReal = false, 2098b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreImag = false); 20990dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 210023b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// EmitComplexExprIntoAddr - Emit the computation of the specified expression 210123b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// of complex type, storing into the specified Value*. 2102190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, 2103190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner bool DestIsVolatile); 21047f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar 21057f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar /// StoreComplexToAddr - Store a complex number into the specified address. 21067f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, 21077f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar bool DestIsVolatile); 21089b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// LoadComplexFromAddr - Load a complex number from the specified address. 21099b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); 21102621fd1d6d3c5eadcae246859f62738645df7540Chris Lattner 2111b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// CreateStaticVarDecl - Create a zero-initialized LLVM global for 2112b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// a static local variable. 2113b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, 2114b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall const char *Separator, 2115f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump llvm::GlobalValue::LinkageTypes Linkage); 21169cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 2117b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the 2118761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// global variable that has already been created for it. If the initializer 2119761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// has a different type than GV does, this may free GV and return a different 2120761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// one. Otherwise it just returns GV. 2121761acc19d966a67f2175783d09412d6ac9463400Chris Lattner llvm::GlobalVariable * 2122b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall AddInitializerToStaticVarDecl(const VarDecl &D, 2123b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *GV); 21249cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 21250096acf421c4609ce7f43e8b05f8c5ca866d4611Daniel Dunbar 21263b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ 21273b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// variable with global storage. 21283b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr); 21293b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson 21303b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalDtorRegistration - Emits a call to register the global ptr 21313b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// with the C++ runtime so that its destructor will be called at exit. 213288f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian void EmitCXXGlobalDtorRegistration(llvm::Constant *DtorFn, 21333b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson llvm::Constant *DeclPtr); 21341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21353030eb82593097502469a8b3fc26112c79c75605John McCall /// Emit code in this function to perform a guarded variable 21363030eb82593097502469a8b3fc26112c79c75605John McCall /// initialization. Guarded initializations are used when it's not 21373030eb82593097502469a8b3fc26112c79c75605John McCall /// possible to prove that an initialization will be done exactly 21383030eb82593097502469a8b3fc26112c79c75605John McCall /// once, e.g. with a static local variable or a static data member 21393030eb82593097502469a8b3fc26112c79c75605John McCall /// of a class template. 21403030eb82593097502469a8b3fc26112c79c75605John McCall void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr); 21415cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 2142efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalInitFunc - Generates code for initializing global 2143efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2144efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalInitFunc(llvm::Function *Fn, 2145efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant **Decls, 2146efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar unsigned NumDecls); 2147efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2148efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalDtorFunc - Generates code for destroying global 2149efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2150efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalDtorFunc(llvm::Function *Fn, 2151810112e28dc839715d17b0a786f23aaa19600ac0Chris Lattner const std::vector<std::pair<llvm::WeakVH, 2152efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant*> > &DtorsAndObjects); 2153efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2154d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, 2155d26bc76c98006609002d9930f8840490e88ac5b5John McCall const VarDecl *D, 21563030eb82593097502469a8b3fc26112c79c75605John McCall llvm::GlobalVariable *Addr); 2157efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2158558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); 215934999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 216034999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, 2161830937bc1100fba7682f7c32c40512085870f50cFariborz Jahanian const Expr *Exp); 21621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21634765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall RValue EmitExprWithCleanups(const ExprWithCleanups *E, 21644765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall AggValueSlot Slot =AggValueSlot::ignored()); 21651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2166756b5c4f9d52642d87d1948bee58f97a4f795b24Anders Carlsson void EmitCXXThrowExpr(const CXXThrowExpr *E); 21671eb2e59338c4b9c0429fc39ca98662adc9e7a3f2Douglas Gregor 21680ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 21690ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar // Internal Helpers 21700ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 21710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21720946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// ContainsLabel - Return true if the statement contains a label in it. If 21730946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// this statement is not executed normally, it not containing a label means 21740946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// that we can just remove the code. 21750946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); 21760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2177ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// containsBreak - Return true if the statement contains a break out of it. 2178ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// If the statement (recursively) contains a switch or loop with a break 2179ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// inside of it, this is fine. 2180ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner static bool containsBreak(const Stmt *S); 2181ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 21824bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2183c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2184c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// constant folds return true and set the boolean result in Result. 2185c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); 21860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2187ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2188ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2189ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// constant folds return true and set the folded value. 2190ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APInt &Result); 2191ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 219231a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an 219331a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// if statement) to the specified blocks. Based on the condition, this might 219431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// try to simplify the codegen of the conditional based on the branch. 21959bc47e29dce8f095be7a6d07dbb02a5a7a112949Chris Lattner void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, 21964bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar llvm::BasicBlock *FalseBlock); 2197be07f60131bc6f8d6696f4644df1ef667a1730d5Mike Stump 219815037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// getTrapBB - Create a basic block that will call the trap intrinsic. We'll 219915037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// generate a branch around the created basic block as necessary. 22006c552c1d5f47fbba00e6268d96a26ad026f2da2aChris Lattner llvm::BasicBlock *getTrapBB(); 22019cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 220221c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson /// EmitCallArg - Emit a single call argument. 2203413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); 220421c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson 22052736071ea3a46f90e65c93418961611d96c10ab9John McCall /// EmitDelegateCallArg - We are performing a delegate call; that 22062736071ea3a46f90e65c93418961611d96c10ab9John McCall /// is, the current function is delegating to another one. Produce 22072736071ea3a46f90e65c93418961611d96c10ab9John McCall /// a r-value suitable for passing the given parameter. 2208413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); 22092736071ea3a46f90e65c93418961611d96c10ab9John McCall 221031a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattnerprivate: 221129e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar void EmitReturnOfRValue(RValue RV, QualType Ty); 221229e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 22135627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty 22145627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// from function arguments into \arg Dst. See ABIArgInfo::Expand. 22155627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// 22165627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \param AI - The first function argument of the expansion. 22175627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \return The argument following the last expanded function 22185627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// argument. 22190dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump llvm::Function::arg_iterator 22205627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeFromArgs(QualType Ty, LValue Dst, 22215627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator AI); 22225627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 22230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg 22240dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// Ty, into individual arguments on the provided vector \arg Args. See 22250dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ABIArgInfo::Expand. 22260dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void ExpandTypeToArgs(QualType Ty, RValue Src, 22275627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::SmallVector<llvm::Value*, 16> &Args); 2228c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson 22291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value* EmitAsmInput(const AsmStmt &S, 2230b84e8a670ad1d00c0a34295c42ac700cdde04815Daniel Dunbar const TargetInfo::ConstraintInfo &Info, 2231c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson const Expr *InputExpr, std::string &ConstraintStr); 22320dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 22336d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman llvm::Value* EmitAsmInputLValue(const AsmStmt &S, 22346d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman const TargetInfo::ConstraintInfo &Info, 22356d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman LValue InputValue, QualType InputType, 22366d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman std::string &ConstraintStr); 22376d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman 22380139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson /// EmitCallArgs - Emit call arguments for a function. 22391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// The CallArgTypeInfo parameter is used for iterating over the known 2240af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson /// argument types of the function being called. 2241af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson template<typename T> 2242af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, 22430139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 2244af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator ArgEnd) { 2245af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator Arg = ArgBeg; 2246af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson 2247af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // First, use the argument types that the type info knows about 2248af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson if (CallArgTypeInfo) { 2249af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), 2250af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { 225144b0a3e858af7b19f489619e52cd58970611cd15Eli Friedman assert(Arg != ArgEnd && "Running over edge of argument list!"); 2252af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson QualType ArgType = *I; 2253745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#ifndef NDEBUG 2254745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ActualArgType = Arg->getType(); 2255745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgType->isPointerType() && ActualArgType->isPointerType()) { 22569cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ActualBaseType = 2257745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType->getAs<PointerType>()->getPointeeType(); 22589cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ArgBaseType = 2259745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ArgType->getAs<PointerType>()->getPointeeType(); 2260745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgBaseType->isVariableArrayType()) { 2261745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (const VariableArrayType *VAT = 2262745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getAsVariableArrayType(ActualBaseType)) { 2263745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (!VAT->getSizeExpr()) 2264745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType = ArgType; 2265745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2266745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2267745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2268af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). 22691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump getTypePtr() == 2270745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getCanonicalType(ActualArgType).getTypePtr() && 2271af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "type mismatch in call argument!"); 2272745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#endif 2273413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, ArgType); 2274af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 22751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Either we've emitted all the call args, or we have a call to a 2277af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // variadic function. 22781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && 2279af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "Extra arguments in non-variadic function!"); 22801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2281af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 22821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2283af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // If we still have any arguments, emit them using the type of the argument. 2284413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall for (; Arg != ArgEnd; ++Arg) 2285413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, Arg->getType()); 2286af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 2287492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall 2288492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall const TargetCodeGenInfo &getTargetHooks() const { 2289492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall return CGM.getTargetCodeGenInfo(); 2290492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall } 2291744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2292744016dde06fcffd50931e94a98c850f8b12cd87John McCall void EmitDeclMetadata(); 2293f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall 2294f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall CodeGenModule::ByrefHelpers * 2295f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall buildByrefHelpers(const llvm::StructType &byrefType, 2296f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall const AutoVarEmission &emission); 22975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 22981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2299150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// Helper class with most of the code for saving a value for a 2300150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// conditional expression cleanup. 2301804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingLLVMValue { 2302150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; 2303150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2304150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Answer whether the given value needs extra work to be saved. 2305150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(llvm::Value *value) { 2306150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's not an instruction, we don't need to save. 2307150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!isa<llvm::Instruction>(value)) return false; 2308150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2309150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's an instruction in the entry block, we don't need to save. 2310150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); 2311150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return (block != &block->getParent()->getEntryBlock()); 2312150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2313150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2314150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Try to save the given value. 2315150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { 2316150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!needsSaving(value)) return saved_type(value, false); 2317150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2318150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // Otherwise we need an alloca. 2319150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::Value *alloca = 2320150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); 2321150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.Builder.CreateStore(value, alloca); 2322150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2323150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return saved_type(alloca, true); 2324150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2325150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2326150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { 2327150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!value.getInt()) return value.getPointer(); 2328150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return CGF.Builder.CreateLoad(value.getPointer()); 2329150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2330150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2331150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2332804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A partial specialization of DominatingValue for llvm::Values that 2333804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// might be llvm::Instructions. 2334804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { 2335804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef T *type; 2336804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2337804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); 2338804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2339804b807ea918184d6de63bd745e1ff75a9bfc679John McCall}; 2340804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2341804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A specialization of DominatingValue for RValue. 2342804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <> struct DominatingValue<RValue> { 2343804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef RValue type; 2344804b807ea918184d6de63bd745e1ff75a9bfc679John McCall class saved_type { 2345804b807ea918184d6de63bd745e1ff75a9bfc679John McCall enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, 2346804b807ea918184d6de63bd745e1ff75a9bfc679John McCall AggregateAddress, ComplexAddress }; 2347804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2348804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::Value *Value; 2349804b807ea918184d6de63bd745e1ff75a9bfc679John McCall Kind K; 2350804b807ea918184d6de63bd745e1ff75a9bfc679John McCall saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} 2351804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2352804b807ea918184d6de63bd745e1ff75a9bfc679John McCall public: 2353804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(RValue value); 2354804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, RValue value); 2355804b807ea918184d6de63bd745e1ff75a9bfc679John McCall RValue restore(CodeGenFunction &CGF); 2356804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2357804b807ea918184d6de63bd745e1ff75a9bfc679John McCall // implementations in CGExprCXX.cpp 2358804b807ea918184d6de63bd745e1ff75a9bfc679John McCall }; 2359804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2360804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(type value) { 2361804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::needsSaving(value); 2362804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2363804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, type value) { 2364804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::save(CGF, value); 2365804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2366150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2367804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return value.restore(CGF); 2368150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2369150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2370150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 23715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace CodeGen 23725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 23735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 23745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 2375