CodeGenFunction.h revision 93c332a8ba2c193c435b293966d343dab15f555b
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" 2114110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne#include "clang/Basic/ABI.h" 22481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "clang/Basic/TargetInfo.h" 23481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/DenseMap.h" 24481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/SmallVector.h" 25481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/Support/ValueHandle.h" 2669243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson#include "CodeGenModule.h" 2745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar#include "CGBuilder.h" 288f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CGValue.h" 298f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace llvm { 31c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class BasicBlock; 32f21efe9088a0b3eda1209d1706529f6cb2073092Benjamin Kramer class LLVMContext; 33dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall class MDNode; 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Module; 35898d508d4c9e9d45914952473e39196b20830a9fDaniel Dunbar class SwitchInst; 36259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar class Twine; 37ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar class Value; 38f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class CallSite; 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 428d308384a220c7dc81755c47cdcbdd87dac25d5bDevang Patel class APValue; 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class ASTContext; 447267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson class CXXDestructorDecl; 45ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith class CXXForRangeStmt; 466815e941998659a55c20c147861b0f437928c3d8Anders Carlsson class CXXTryStmt; 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Decl; 48ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner class LabelDecl; 49c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class EnumConstantDecl; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class FunctionDecl; 5172564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor class FunctionProtoType; 52c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class LabelStmt; 53679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian class ObjCContainerDecl; 5429e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCInterfaceDecl; 5529e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCIvarDecl; 56391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner class ObjCMethodDecl; 57fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian class ObjCImplementationDecl; 58af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar class ObjCPropertyImplDecl; 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class TargetInfo; 60492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall class TargetCodeGenInfo; 61c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class VarDecl; 6216f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCForCollectionStmt; 6316f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtTryStmt; 6416f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtThrowStmt; 6516f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtSynchronizedStmt; 665549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace CodeGen { 68b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel class CodeGenTypes; 69e896d98548b02223c7740d807a0aa6e20fba7079Anders Carlsson class CGDebugInfo; 70bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar class CGFunctionInfo; 710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump class CGRecordLayout; 72ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall class CGBlockInfo; 734c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall class CGCXXABI; 74d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFlags; 75d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFieldFlags; 760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 77f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A branch fixup. These are required when emitting a goto to a 78f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// label which hasn't been emitted yet. The goto is optimistically 79f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// emitted as a branch to the basic block for the label, and (if it 80f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// occurs in a scope with non-trivial cleanups) a fixup is added to 81f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// the innermost cleanup. When a (normal) cleanup is popped, any 82f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// unresolved fixups in that scope are threaded through the cleanup. 83f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallstruct BranchFixup { 84ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The block containing the terminator which needs to be modified 85ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// into a switch if this fixup is resolved into the current scope. 86ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// If null, LatestBranch points directly to the destination. 87ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *OptimisticBranchBlock; 88f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 89ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The ultimate destination of the branch. 90f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 91f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// This can be set to null to indicate that this fixup was 92f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// successfully resolved. 93f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Destination; 94f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 95ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The destination index value. 96ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned DestinationIndex; 97ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 98ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The initial branch of the fixup. 99ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BranchInst *InitialBranch; 100f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 101f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 102804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct InvariantValue { 103150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T type; 104150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T saved_type; 105150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(type value) { return false; } 106150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, type value) { return value; } 107150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { return value; } 108150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 109804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 110804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A metaprogramming class for ensuring that a value will dominate an 111804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// arbitrary position in a function. 112804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue : InvariantValue<T> {}; 113804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 114804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T, bool mightBeInstruction = 115804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::is_base_of<llvm::Value, T>::value && 116804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::Constant, T>::value && 117804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::BasicBlock, T>::value> 118804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingPointer; 119804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,false> : InvariantValue<T*> {}; 120804b807ea918184d6de63bd745e1ff75a9bfc679John McCall// template <class T> struct DominatingPointer<T,true> at end of file 121804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 122804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue<T*> : DominatingPointer<T> {}; 123150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 124cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCallenum CleanupKind { 125cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall EHCleanup = 0x1, 126cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalCleanup = 0x2, 127cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalAndEHCleanup = EHCleanup | NormalCleanup, 128cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 129cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveCleanup = 0x4, 130cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveEHCleanup = EHCleanup | InactiveCleanup, 131cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalCleanup = NormalCleanup | InactiveCleanup, 132cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup 133cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall}; 134da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 135f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A stack of scopes which respond to exceptions, including cleanups 136f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// and catch blocks. 137f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallclass EHScopeStack { 138f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 139f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A saved depth on the scope stack. This is necessary because 140f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushing scopes onto the stack invalidates iterators. 141f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class stable_iterator { 142f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend class EHScopeStack; 143f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 144f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Offset from StartOfData to EndOfBuffer. 145f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ptrdiff_t Size; 146f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 147f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator(ptrdiff_t Size) : Size(Size) {} 148f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 149f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall public: 150f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator invalid() { return stable_iterator(-1); } 151f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator() : Size(-1) {} 152f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 153f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool isValid() const { return Size >= 0; } 154f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 155838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope encloses I. 156838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false if I is invalid. 157838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 158ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool encloses(stable_iterator I) const { return Size <= I.Size; } 159838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall 160838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope strictly encloses I: that is, 161838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// if it encloses I and is not I. 162838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false is I is invalid. 163838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 164ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } 1651bda662cb37d9fe24be4b3cf8ea0f4e550e1f889John McCall 166f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator==(stable_iterator A, stable_iterator B) { 167f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size == B.Size; 168f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 169f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator!=(stable_iterator A, stable_iterator B) { 170f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size != B.Size; 171f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 172f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 173f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1741f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Information for lazily generating a cleanup. Subclasses must be 1751f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// POD-like: cleanups will not be destructed, and they will be 1761f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// allocated on the cleanup stack and freely copied and moved 1771f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// around. 178da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 1791f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Cleanup implementations should generally be declared in an 180da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// anonymous namespace. 1811f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall class Cleanup { 182da65ea86482bc116906edfb9ba1d7124f76cc867John McCall public: 1833e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // Anchor the construction vtable. We use the destructor because 1843e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // gcc gives an obnoxious warning if there are virtual methods 1853e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // with an accessible non-virtual destructor. Unfortunately, 1863e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // declaring this destructor makes it non-trivial, but there 1873e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // doesn't seem to be any other way around this warning. 1883e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // 1893e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // This destructor will never be called. 1901f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall virtual ~Cleanup(); 1913e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall 192da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Emit the cleanup. For normal cleanups, this is run in the 193da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// same EH context as when the cleanup was pushed, i.e. the 194da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// immediately-enclosing context of the cleanup scope. For 195da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// EH cleanups, this is run in a terminate context. 196da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 197da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // \param IsForEHCleanup true if this is for an EH cleanup, false 198da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// if for a normal cleanup. 199da65ea86482bc116906edfb9ba1d7124f76cc867John McCall virtual void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) = 0; 200da65ea86482bc116906edfb9ba1d7124f76cc867John McCall }; 201da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 2023ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// UnconditionalCleanupN stores its N parameters and just passes 2033ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// them to the real cleanup function. 2043ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 2053ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class UnconditionalCleanup1 : public Cleanup { 2063ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall A0 a0; 207150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 2083ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall UnconditionalCleanup1(A0 a0) : a0(a0) {} 2093ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 2103ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall T::Emit(CGF, IsForEHCleanup, a0); 2113ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 212150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 213150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 214150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 215150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class UnconditionalCleanup2 : public Cleanup { 216150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall A0 a0; A1 a1; 2174bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall public: 218150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall UnconditionalCleanup2(A0 a0, A1 a1) : a0(a0), a1(a1) {} 219150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 220150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall T::Emit(CGF, IsForEHCleanup, a0, a1); 221150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 222150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 223150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 224150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// ConditionalCleanupN stores the saved form of its N parameters, 225150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// then restores them and performs the cleanup. 2263ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 2273ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup1 : public Cleanup { 228804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 2293ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall A0_saved a0_saved; 2303ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 2313ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 232804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 2333ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall T::Emit(CGF, IsForEHCleanup, a0); 2343ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 2353ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 2363ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall public: 2373ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup1(A0_saved a0) 2383ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0) {} 2393ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall }; 2403ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 241150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 2423ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup2 : public Cleanup { 243804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 244804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A1>::saved_type A1_saved; 2454bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A0_saved a0_saved; 2464bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A1_saved a1_saved; 247150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2483ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) { 249804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 250804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 251150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall T::Emit(CGF, IsForEHCleanup, a0, a1); 252150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 253150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 254150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 2553ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup2(A0_saved a0, A1_saved a1) 2563ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0), a1_saved(a1) {} 257150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 258150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 259f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallprivate: 260f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // The implementation for this class is in CGException.h and 261f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // CGException.cpp; the definition is here because it's used as a 262f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // member of CodeGenFunction. 263f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 264f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The start of the scope-stack buffer, i.e. the allocated pointer 265f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// for the buffer. All of these pointers are either simultaneously 266f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// null or simultaneously valid. 267f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfBuffer; 268f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 269f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The end of the buffer. 270f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *EndOfBuffer; 271f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 272f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The first valid entry in the buffer. 273f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfData; 274f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 275f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost normal cleanup on the stack. 276f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostNormalCleanup; 277f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 278f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost EH cleanup on the stack. 279f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostEHCleanup; 280f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 281f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The number of catches on the stack. 282f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned CatchDepth; 283f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 284ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The current EH destination index. Reset to FirstCatchIndex 285ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// whenever the last EH cleanup is popped. 286ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextEHDestIndex; 287ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall enum { FirstEHDestIndex = 1 }; 288ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 289f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The current set of branch fixups. A branch fixup is a jump to 290f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// an as-yet unemitted label, i.e. a label for which we don't yet 291f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// know the EH stack depth. Whenever we pop a cleanup, we have 292f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to thread all the current branch fixups through it. 293f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 294f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Fixups are recorded as the Use of the respective branch or 295f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// switch statement. The use points to the final destination. 296f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// When popping out of a cleanup, these uses are threaded through 297f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup and adjusted to point to the new cleanup. 298f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 299f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Note that branches are allowed to jump into protected scopes 300f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// in certain situations; e.g. the following code is legal: 301f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// struct A { ~A(); }; // trivial ctor, non-trivial dtor 302f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// goto foo; 303f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A a; 304f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// foo: 305f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// bar(); 306f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<BranchFixup, 8> BranchFixups; 307f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 308f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *allocate(size_t Size); 309f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 3101f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *pushCleanup(CleanupKind K, size_t DataSize); 311da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 312f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 313f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), 314f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostNormalCleanup(stable_end()), 315f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostEHCleanup(stable_end()), 316ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall CatchDepth(0), NextEHDestIndex(FirstEHDestIndex) {} 317f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~EHScopeStack() { delete[] StartOfBuffer; } 318f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 319da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // Variadic templates would make this not terrible. 320da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 321da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 3228e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T> 3231f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind) { 3241f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3251f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(); 3268e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3278e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3288e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3298e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 3308e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T, class A0> 3311f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0) { 3321f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3331f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0); 3348e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3358e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3368e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3378e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 338da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1> 3391f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { 3401f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3411f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1); 342da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 343da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 344da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 345da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 346da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2> 3471f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { 3481f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3491f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2); 350da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 351da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 352da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 353da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 354da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2, class A3> 3551f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { 3561f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3571f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); 358da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 359da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 360da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 36177199713ab56f87ffad9a535ff2a0877704eed87John McCall /// Push a lazily-created cleanup on the stack. 36277199713ab56f87ffad9a535ff2a0877704eed87John McCall template <class T, class A0, class A1, class A2, class A3, class A4> 3631f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { 3641f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3651f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); 36677199713ab56f87ffad9a535ff2a0877704eed87John McCall (void) Obj; 36777199713ab56f87ffad9a535ff2a0877704eed87John McCall } 36877199713ab56f87ffad9a535ff2a0877704eed87John McCall 3697d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall // Feel free to add more variants of the following: 3707d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 3717d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Push a cleanup with non-constant storage requirements on the 3727d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. The cleanup type must provide an additional static method: 3737d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// static size_t getExtraSize(size_t); 3747d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The argument to this method will be the value N, which will also 3757d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// be passed as the first argument to the constructor. 3767d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 3777d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The data stored in the extra storage must obey the same 3787d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// restrictions as normal cleanup member data. 3797d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 3807d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The pointer returned from this method is valid until the cleanup 3817d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack is modified. 3827d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall template <class T, class A0, class A1, class A2> 3837d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { 3847d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); 3857d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall return new (Buffer) T(N, a0, a1, a2); 3867d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall } 3877d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 388f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a cleanup scope off the stack. This should only be called 389f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// by CodeGenFunction::PopCleanupBlock. 390f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCleanup(); 391f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 392f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a set of catch handlers on the stack. The catch is 393f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// uninitialized and will need to have the given number of handlers 394f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// set on it. 395f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHCatchScope *pushCatch(unsigned NumHandlers); 396f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 397f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a catch scope off the stack. 398f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCatch(); 399f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 400f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push an exceptions filter on the stack. 401f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHFilterScope *pushFilter(unsigned NumFilters); 402f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 403f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops an exceptions filter off the stack. 404f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popFilter(); 405f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 406f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a terminate handler on the stack. 407f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void pushTerminate(); 408f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 409f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a terminate handler off the stack. 410f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popTerminate(); 411f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 412f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether the exception-scopes stack is empty. 413f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool empty() const { return StartOfData == EndOfBuffer; } 414f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 415f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool requiresLandingPad() const { 416f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return (CatchDepth || hasEHCleanups()); 417f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 418f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 419f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any normal cleanups on the stack. 420f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasNormalCleanups() const { 421f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup != stable_end(); 422f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 423f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 424f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost normal cleanup on the stack, or 425f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stable_end() if there are no normal cleanups. 426f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostNormalCleanup() const { 427f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup; 428f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 429838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall stable_iterator getInnermostActiveNormalCleanup() const; // CGException.h 430f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 431f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any EH cleanups on the stack. 432f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasEHCleanups() const { 433f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostEHCleanup != stable_end(); 434f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 435f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 436f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost EH cleanup on the stack, or stable_end() 437f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// if there are no EH cleanups. 438f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostEHCleanup() const { 439f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostEHCleanup; 440f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 441838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall stable_iterator getInnermostActiveEHCleanup() const; // CGException.h 442f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 443f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// An unstable reference to a scope-stack depth. Invalidated by 444f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushes but not pops. 445f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class iterator; 446f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 447f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the innermost EH scope. 448f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator begin() const; 449f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 450f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the outermost EH scope. 451f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator end() const; 452f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 453f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the top of the EH stack. The 454f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// returned reference is valid until that scope is popped off the 455f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stack. 456f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stable_begin() const { 457f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(EndOfBuffer - StartOfData); 458f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 459f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 460f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the bottom of the EH stack. 461f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator stable_end() { 462f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(0); 463f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 464f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 465f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Translates an iterator into a stable_iterator. 466f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stabilize(iterator it) const; 467f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 468f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Finds the nearest cleanup enclosing the given iterator. 469f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns stable_iterator::invalid() if there are no such cleanups. 470f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getEnclosingEHCleanup(iterator it) const; 471f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 472f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Turn a stable reference to a scope depth into a unstable pointer 473f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to the EH stack. 474f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator find(stable_iterator save) const; 475f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 476f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Removes the cleanup pointed to by the given stable_iterator. 477f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void removeCleanup(stable_iterator save); 478f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 479f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Add a branch fixup to the current cleanup scope. 480f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &addBranchFixup() { 481f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); 482f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixups.push_back(BranchFixup()); 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups.back(); 484f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 486f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned getNumBranchFixups() const { return BranchFixups.size(); } 487f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &getBranchFixup(unsigned I) { 488f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(I < getNumBranchFixups()); 489f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups[I]; 490f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 491f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 492ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Pops lazily-removed fixups from the end of the list. This 493ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// should only be called by procedures which have just popped a 494ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// cleanup or resolved one or more fixups. 495ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void popNullFixups(); 496ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 497ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Clears the branch-fixups list. This should only be called by 4988abdbd8118e37e759d1ce3f5814ee0a24b1589e8John McCall /// ResolveAllBranchFixups. 499ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void clearFixups() { BranchFixups.clear(); } 500ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 501ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Gets the next EH destination index. 502ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getNextEHDestIndex() { return NextEHDestIndex++; } 503f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 504f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CodeGenFunction - This class organizes the per-function state that is used 5065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// while generating LLVM code. 5075936e33bf74dd6bf126ceee0f6169a2593d03a69John McCallclass CodeGenFunction : public CodeGenTypeCache { 5088a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT 5098a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT 5104c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 5114c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall friend class CGCXXABI; 512bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattnerpublic: 513ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// A jump destination is an abstract label, branching to which may 514ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// require a jump out through normal cleanups. 515f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct JumpDest { 516ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest() : Block(0), ScopeDepth(), Index(0) {} 517ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest(llvm::BasicBlock *Block, 518ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 519ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 520ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 521ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 522ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 523ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 524ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 525ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 5269cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 527ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 528f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Block; 529f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator ScopeDepth; 530ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 531ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall }; 532ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 533ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// An unwind destination is an abstract label, branching to which 534ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// may require a jump out through EH cleanups. 535ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall struct UnwindDest { 536ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest() : Block(0), ScopeDepth(), Index(0) {} 537ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest(llvm::BasicBlock *Block, 538ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 539ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 540ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 541ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 542ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 543ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 544ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 545ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 546ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 547ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 548ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *Block; 549ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator ScopeDepth; 550ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 551f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 552f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenModule &CGM; // Per-module state. 554444be7366d0a1e172c0290a1ea54c1cb16b5947cDaniel Dunbar const TargetInfo &Target; 5550dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 55658dee10ed2eee34035f62d1c2d32b3639e9182f8Chris Lattner typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; 55745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 5580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 559b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurFuncDecl - Holds the Decl for the current function or ObjC method. 560b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// This excludes BlockDecls. 5614111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner const Decl *CurFuncDecl; 562b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurCodeDecl - This is the inner-most code context, which includes blocks. 563b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner const Decl *CurCodeDecl; 56488b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar const CGFunctionInfo *CurFnInfo; 565391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner QualType FnRetTy; 5665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Function *CurFn; 5675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5686a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump /// CurGD - The GlobalDecl for the current function being compiled. 5696a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump GlobalDecl CurGD; 5706a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump 5715ca2084cf9b529563209429857f01fdae9dcdfa5Daniel Dunbar /// ReturnBlock - Unified return block. 572f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ReturnBlock; 573f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ReturnValue - The temporary alloca to hold the return value. This is null 5750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// iff the function has no return value. 576b17daf9ab790ae71aacad2cc4aa11cd8d86c25d1Eli Friedman llvm::Value *ReturnValue; 5770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 578ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// RethrowBlock - Unified rethrow block. 579ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest RethrowBlock; 580ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 5815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AllocaInsertPoint - This is an instruction in the entry block before which 5825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// we prefer to insert allocas. 583481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; 5840ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 5859c276ae0f24d4cee8f7954069d4b8eae45d0447dMike Stump bool CatchUndefined; 5869cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 587d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const CodeGen::CGBlockInfo *BlockInfo; 588d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *BlockPointer; 589d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 5903d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// \brief A mapping from NRVO variables to the flags used to indicate 5913d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// when the NRVO has been applied to this variable. 5923d91bbcdab155181556969cad6ec97014405acedDouglas Gregor llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; 5939cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 594f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack EHStack; 5950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 596ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// i32s containing the indexes of the cleanup destinations. 597ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *NormalCleanupDest; 598ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *EHCleanupDest; 599ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 600ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextCleanupDestIndex; 601ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 602f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The exception slot. All landing pads write the current 603f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// exception pointer into this alloca. 604f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *ExceptionSlot; 6050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 60693c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// The selector slot. Under the MandatoryCleanup model, all 60793c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// landing pads write the current selector value into this alloca. 60893c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::AllocaInst *EHSelectorSlot; 60993c332a8ba2c193c435b293966d343dab15f555bJohn McCall 610f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Emits a landing pad for the current EH stack. 611f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *EmitLandingPad(); 6120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 613f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDestImpl(); 61499533834ba8f3658559f334e68a518ebb6388ceaMike Stump 6153ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// Set up the last cleaup that was pushed as a conditional 6163ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// full-expression cleanup. 6173ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void initFullExprCleanup(); 618150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 619150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T> 620804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<T>::saved_type saveValueInCond(T value) { 621804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return DominatingValue<T>::save(*this, value); 622150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 623150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 624f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 625f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// ObjCEHValueStack - Stack of Objective-C exception values, used for 626f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// rethrows. 627f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<llvm::Value*, 8> ObjCEHValueStack; 628bb66f9f2e454135b86462d121629275b6ac38e96Anders Carlsson 629f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // A struct holding information about a finally block's IR 630f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // generation. For now, doesn't actually hold anything. 631f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct FinallyInfo { 632d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump }; 633d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump 634f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall FinallyInfo EnterFinallyBlock(const Stmt *Stmt, 635f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *BeginCatchFn, 636f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *EndCatchFn, 637f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *RethrowFn); 638f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void ExitFinallyBlock(FinallyInfo &FinallyInfo); 639f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 640150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 641150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// current full-expression. Safe against the possibility that 642150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// we're currently inside a conditionally-evaluated expression. 6433ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 6443ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0) { 6453ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // If we're not in a conditional branch, or if none of the 6463ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // arguments requires saving, then use the unconditional cleanup. 6473ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall if (!isInConditionalBranch()) { 6483ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall typedef EHScopeStack::UnconditionalCleanup1<T, A0> CleanupType; 6493ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall return EHStack.pushCleanup<CleanupType>(kind, a0); 6503ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 6513ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 652804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 6533ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6543ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; 6553ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved); 6563ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 6573ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 6583ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6593ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 6603ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// current full-expression. Safe against the possibility that 6613ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// we're currently inside a conditionally-evaluated expression. 662150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 663150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { 664150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If we're not in a conditional branch, or if none of the 665150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // arguments requires saving, then use the unconditional cleanup. 6663ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall if (!isInConditionalBranch()) { 667150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef EHScopeStack::UnconditionalCleanup2<T, A0, A1> CleanupType; 668150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return EHStack.pushCleanup<CleanupType>(kind, a0, a1); 669150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 670150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 671804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 672804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 673150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 674150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef EHScopeStack::ConditionalCleanup2<T, A0, A1> CleanupType; 6753ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved); 6763ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 677150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 678150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 679f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 680f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// complete-object destructor of an object of the given type at the 681f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// given address. Does nothing if T is not a C++ class type with a 682f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// non-trivial destructor. 683f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PushDestructorCleanup(QualType T, llvm::Value *Addr); 684f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 68581407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 68681407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// complete-object variant of the given destructor on the object at 68781407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// the given address. 68881407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall void PushDestructorCleanup(const CXXDestructorDecl *Dtor, 68981407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall llvm::Value *Addr); 69081407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall 691f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlock - Will pop the cleanup entry on the stack and 692f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// process all branch fixups. 693ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void PopCleanupBlock(bool FallThroughIsBranchThrough = false); 694f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 6957d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// DeactivateCleanupBlock - Deactivates the given cleanup block. 6967d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The block cannot be reactivated. Pops it if it's the top of the 6977d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. 6987d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 6997d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 7007d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// ActivateCleanupBlock - Activates an initially-inactive cleanup. 7017d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Cannot be used to resurrect a deactivated cleanup. 7027d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 703cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 704f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// \brief Enters a new scope for capturing cleanups, all of which 705f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// will be executed once the scope is exited. 706f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class RunCleanupsScope { 70701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CodeGenFunction& CGF; 708f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator CleanupStackDepth; 70901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor bool OldDidCallStackSave; 7105656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool PerformCleanup; 71101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 712f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope(const RunCleanupsScope &); // DO NOT IMPLEMENT 713f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope &operator=(const RunCleanupsScope &); // DO NOT IMPLEMENT 71401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 71501234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor public: 71601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Enter a new cleanup scope. 7179cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer explicit RunCleanupsScope(CodeGenFunction &CGF) 7189cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer : CGF(CGF), PerformCleanup(true) 7195656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor { 720f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CleanupStackDepth = CGF.EHStack.stable_begin(); 72101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor OldDidCallStackSave = CGF.DidCallStackSave; 7224ada2ca7d82dab68d3646f3eb6dcdfee072e8ea4Argyrios Kyrtzidis CGF.DidCallStackSave = false; 72301234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 72401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 72501234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Exit this cleanup scope, emitting any accumulated 72601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// cleanups. 727f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~RunCleanupsScope() { 7285656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor if (PerformCleanup) { 7295656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 730f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 7315656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7325656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7335656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 7345656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Determine whether this scope requires any cleanups. 7355656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool requiresCleanups() const { 736f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return CGF.EHStack.stable_begin() != CleanupStackDepth; 7375656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 7385656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 7395656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Force the emission of cleanups now, instead of waiting 7405656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// until this object is destroyed. 7415656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor void ForceCleanup() { 7425656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor assert(PerformCleanup && "Already forced cleanup"); 74301234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 744f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 7455656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor PerformCleanup = false; 74601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 74701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor }; 74801234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 74944ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 750f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlocks - Takes the old cleanup stack size and emits 751f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup blocks that have been added. 752f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); 75344ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 754ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void ResolveBranchFixups(llvm::BasicBlock *Target); 755ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 756f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 757f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 758f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 759ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { 760413e67778d593215d2f2161a4e712c8568f1ddd0John McCall return JumpDest(Target, 761413e67778d593215d2f2161a4e712c8568f1ddd0John McCall EHStack.getInnermostNormalCleanup(), 762413e67778d593215d2f2161a4e712c8568f1ddd0John McCall NextCleanupDestIndex++); 763f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 764c71c845fe77ee1f891d60232ec320912d88557eeAnders Carlsson 765f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 766f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 767f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 768ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner JumpDest getJumpDestInCurrentScope(llvm::StringRef Name = llvm::StringRef()) { 769ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall return getJumpDestInCurrentScope(createBasicBlock(Name)); 770f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 771f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 772f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughCleanup - Emit a branch from the current insert 773f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// block through the normal cleanup handling code (if any) and then 774f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// on to \arg Dest. 775f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitBranchThroughCleanup(JumpDest Dest); 776b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner 777b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// isObviouslyBranchWithoutCleanups - Return true if a branch to the 778b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// specified destination obviously has no cleanups to run. 'false' is always 779b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// a conservatively correct answer for this method. 780b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; 781f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 782f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughEHCleanup - Emit a branch from the current 783f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// insert block through the EH cleanup handling code (if any) and 784f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// then on to \arg Dest. 785ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void EmitBranchThroughEHCleanup(UnwindDest Dest); 786ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 787ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// getRethrowDest - Returns the unified outermost-scope rethrow 788ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// destination. 789ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest getRethrowDest(); 7900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 791150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An object to manage conditionally-evaluated expressions. 792150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class ConditionalEvaluation { 793150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *StartBB; 7941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 795150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 796150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation(CodeGenFunction &CGF) 797150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : StartBB(CGF.Builder.GetInsertBlock()) {} 7989cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 799150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void begin(CodeGenFunction &CGF) { 800150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != this); 801150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!CGF.OutermostConditional) 802150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = this; 803150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 804150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 805150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void end(CodeGenFunction &CGF) { 806150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != 0); 807150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (CGF.OutermostConditional == this) 808150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 809150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 810150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 811150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Returns a block which will be executed prior to each 812150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// evaluation of the conditional code. 813150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *getStartingBlock() const { 814150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return StartBB; 815150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 816150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 8171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8183019c444c672938c57f5573840071ecd73425ee7John McCall /// isInConditionalBranch - Return true if we're currently emitting 8193019c444c672938c57f5573840071ecd73425ee7John McCall /// one branch or the other of a conditional expression. 820150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall bool isInConditionalBranch() const { return OutermostConditional != 0; } 821150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 822150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An RAII object to record that we're evaluating a statement 823150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// expression. 824150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class StmtExprEvaluation { 825150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CodeGenFunction &CGF; 826150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 827150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// We have to save the outermost conditional: cleanups in a 828150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// statement expression aren't conditional just because the 829150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// StmtExpr is. 830150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *SavedOutermostConditional; 831150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 832150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 833150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall StmtExprEvaluation(CodeGenFunction &CGF) 834150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { 835150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 836150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 837150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 838150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ~StmtExprEvaluation() { 839150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = SavedOutermostConditional; 840150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.EnsureInsertPoint(); 841150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 842150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 843e996ffd240f20a1048179d7727a6ee3227261921John McCall 84456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// An object which temporarily prevents a value from being 84556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// destroyed by aggressive peephole optimizations that assume that 84656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// all uses of a value have been realized in the IR. 84756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall class PeepholeProtection { 84856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::Instruction *Inst; 84956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class CodeGenFunction; 85056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 85156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall public: 85256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection() : Inst(0) {} 85356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall }; 85456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 855e996ffd240f20a1048179d7727a6ee3227261921John McCall /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. 856e996ffd240f20a1048179d7727a6ee3227261921John McCall class OpaqueValueMapping { 857e996ffd240f20a1048179d7727a6ee3227261921John McCall CodeGenFunction &CGF; 858e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *OpaqueValue; 85956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall bool BoundLValue; 86056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CodeGenFunction::PeepholeProtection Protection; 861e996ffd240f20a1048179d7727a6ee3227261921John McCall 862e996ffd240f20a1048179d7727a6ee3227261921John McCall public: 86356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool shouldBindAsLValue(const Expr *expr) { 86456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return expr->isGLValue() || expr->getType()->isRecordType(); 86556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 86656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 86756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Build the opaque value mapping for the given conditional 86856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// operator if it's the GNU ?: extension. This is a common 86956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// enough pattern that the convenience operator is really 87056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// helpful. 87156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 87256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 87356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *op) : CGF(CGF) { 87456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (isa<ConditionalOperator>(op)) { 87556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue = 0; 87656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BoundLValue = false; 87756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return; 87856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 87956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 88056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); 88156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall init(e->getOpaqueValue(), e->getCommon()); 88256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 88356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 884e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValueMapping(CodeGenFunction &CGF, 885e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *opaqueValue, 88656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue lvalue) 88756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : CGF(CGF), OpaqueValue(opaqueValue), BoundLValue(true) { 888e996ffd240f20a1048179d7727a6ee3227261921John McCall assert(opaqueValue && "no opaque value expression!"); 88956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(shouldBindAsLValue(opaqueValue)); 89056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initLValue(lvalue); 89156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 89256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 89356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 89456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const OpaqueValueExpr *opaqueValue, 89556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall RValue rvalue) 89656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall : CGF(CGF), OpaqueValue(opaqueValue), BoundLValue(false) { 89756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(opaqueValue && "no opaque value expression!"); 89856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!shouldBindAsLValue(opaqueValue)); 89956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initRValue(rvalue); 900e996ffd240f20a1048179d7727a6ee3227261921John McCall } 901e996ffd240f20a1048179d7727a6ee3227261921John McCall 902e996ffd240f20a1048179d7727a6ee3227261921John McCall void pop() { 903e996ffd240f20a1048179d7727a6ee3227261921John McCall assert(OpaqueValue && "mapping already popped!"); 90456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall popImpl(); 905e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValue = 0; 906e996ffd240f20a1048179d7727a6ee3227261921John McCall } 907e996ffd240f20a1048179d7727a6ee3227261921John McCall 908e996ffd240f20a1048179d7727a6ee3227261921John McCall ~OpaqueValueMapping() { 90956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (OpaqueValue) popImpl(); 91056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 91156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 91256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall private: 91356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void popImpl() { 91456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (BoundLValue) 91556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueLValues.erase(OpaqueValue); 91656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall else { 91756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueRValues.erase(OpaqueValue); 91856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.unprotectFromPeepholes(Protection); 91956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 92056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 92156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 92256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void init(const OpaqueValueExpr *ov, const Expr *e) { 92356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValue = ov; 92456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall BoundLValue = shouldBindAsLValue(ov); 92556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(BoundLValue == shouldBindAsLValue(e) 92656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall && "inconsistent expression value kinds!"); 92756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (BoundLValue) 92856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initLValue(CGF.EmitLValue(e)); 92956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall else 93056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall initRValue(CGF.EmitAnyExpr(e)); 93156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 93256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 93356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void initLValue(const LValue &lv) { 93456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueLValues.insert(std::make_pair(OpaqueValue, lv)); 93556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 93656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 93756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void initRValue(const RValue &rv) { 93856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // Work around an extremely aggressive peephole optimization in 93956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // EmitScalarConversion which assumes that all other uses of a 94056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall // value are extant. 94156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall Protection = CGF.protectFromPeepholes(rv); 94256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CGF.OpaqueRValues.insert(std::make_pair(OpaqueValue, rv)); 943e996ffd240f20a1048179d7727a6ee3227261921John McCall } 944e996ffd240f20a1048179d7727a6ee3227261921John McCall }; 945e220455a059d926953befe72857b9525273717efFariborz Jahanian 946e220455a059d926953befe72857b9525273717efFariborz Jahanian /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field 947e220455a059d926953befe72857b9525273717efFariborz Jahanian /// number that holds the value. 948e220455a059d926953befe72857b9525273717efFariborz Jahanian unsigned getByRefValueLLVMField(const ValueDecl *VD) const; 94952a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian 95052a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// BuildBlockByrefAddress - Computes address location of the 95152a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// variable which is declared as __block. 95252a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, 95352a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian const VarDecl *V); 9547f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerprivate: 955d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner CGDebugInfo *DebugInfo; 956aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel bool DisableDebugInfo; 95709429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 95893c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid 95993c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// calling llvm.stacksave for multiple VLAs in the same scope. 96093c332a8ba2c193c435b293966d343dab15f555bJohn McCall bool DidCallStackSave; 96193c332a8ba2c193c435b293966d343dab15f555bJohn McCall 962f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// IndirectBranch - The first time an indirect goto is seen we create a block 963f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// with an indirect branch. Every time we see the address of a label taken, 964f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// we add the label to the indirect goto. Every subsequent indirect goto is 965f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// codegen'd as a jump to the IndirectBranch's basic block. 966d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner llvm::IndirectBrInst *IndirectBranch; 9670ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 9680dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C 9690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// decls. 9706b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; 9716b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall DeclMapTy LocalDeclMap; 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LabelMap - This keeps track of the LLVM basic block for each C label. 974ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; 9750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 9760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // BreakContinueStack - This keeps track of where break and continue 977e4b6d342c29d5cb9d311756100df1603810fa892Anders Carlsson // statements should jump to. 978da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner struct BreakContinue { 979f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BreakContinue(JumpDest Break, JumpDest Continue) 980f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall : BreakBlock(Break), ContinueBlock(Continue) {} 9810dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 982f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest BreakBlock; 983f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ContinueBlock; 9840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump }; 985da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner llvm::SmallVector<BreakContinue, 8> BreakContinueStack; 98618ccc7776ad6288c5f630dc7967fb99d099c9cd9Daniel Dunbar 9870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// SwitchInsn - This is nearest current switch instruction. It is null if if 9880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// current context is not in a switch. 98951b09f2c528c8460b5465c676173324e44176d62Devang Patel llvm::SwitchInst *SwitchInsn; 99051b09f2c528c8460b5465c676173324e44176d62Devang Patel 9910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// CaseRangeBlock - This block holds if condition check for last case 99280fd5f96e6805ac43aab99faabd5b4c8b19551b7Devang Patel /// statement range in current switch instruction. 993c049e4f406a7f7179eba98659044a32508e53289Devang Patel llvm::BasicBlock *CaseRangeBlock; 994c049e4f406a7f7179eba98659044a32508e53289Devang Patel 99556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// OpaqueLValues - Keeps track of the current set of opaque value 996e996ffd240f20a1048179d7727a6ee3227261921John McCall /// expressions. 99756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; 99856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; 999e996ffd240f20a1048179d7727a6ee3227261921John McCall 10000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // VLASizeMap - This keeps track of the associated size for each VLA type. 1001bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // We track this by the size expression rather than the type itself because 1002bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // in certain situations, like a const qualifier applied to an VLA typedef, 1003bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // multiple VLA types can share the same size expression. 10040dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // FIXME: Maybe this could be a stack of maps that is pushed/popped as we 10050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // enter/leave scopes. 1006bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; 10070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1008f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A block containing a single 'unreachable' instruction. Created 1009f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// lazily by getUnreachableBlock(). 1010f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *UnreachableBlock; 10110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1012f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXThisDecl - When generating code for a C++ member function, 1013f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// this will hold the implicit 'this' declaration. 10142b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson ImplicitParamDecl *CXXThisDecl; 10152504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXThisValue; 10161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1017f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXVTTDecl - When generating code for a base object constructor or 1018f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// base object destructor with virtual bases, this will hold the implicit 1019f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// VTT parameter. 1020f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson ImplicitParamDecl *CXXVTTDecl; 10212504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXVTTValue; 10229cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1023150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// OutermostConditional - Points to the outermost active 1024150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// conditional control. This is used so that we know if a 1025150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// temporary should be destroyed conditionally. 1026150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *OutermostConditional; 10271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10287dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson 10297dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM 10307dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// type as well as the field number that contains the actual data. 10319cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::DenseMap<const ValueDecl *, std::pair<const llvm::Type *, 10327dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson unsigned> > ByRefValueInfo; 10339cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1034f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *TerminateLandingPad; 1035182f383db1782af752ecaf607fdff72a8542088bMike Stump llvm::BasicBlock *TerminateHandler; 103683252dcfe61aaebcb6bc117e71dc12968729513fChris Lattner llvm::BasicBlock *TrapBB; 1037940670512d7c3d93389bb38a426abcb7ef44271eEli Friedman 10385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 10395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenFunction(CodeGenModule &cgm); 10400dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 10411e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall CodeGenTypes &getTypes() const { return CGM.getTypes(); } 1042f2aac84709c418189e476ad591848dad50291885John McCall ASTContext &getContext() const { return CGM.getContext(); } 1043aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel CGDebugInfo *getDebugInfo() { 1044aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel if (DisableDebugInfo) 1045aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return NULL; 1046aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return DebugInfo; 1047aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel } 1048aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void disableDebugInfo() { DisableDebugInfo = true; } 1049aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void enableDebugInfo() { DisableDebugInfo = false; } 1050aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel 10515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1052d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const LangOptions &getLangOptions() const { return CGM.getLangOptions(); } 1053d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1054f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns a pointer to the function's exception object slot, which 1055f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// is assigned in every landing pad. 1056f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *getExceptionSlot(); 105793c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Value *getEHSelectorSlot(); 1058f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1059ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getNormalCleanupDestSlot(); 1060ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getEHCleanupDestSlot(); 1061ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 1062f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getUnreachableBlock() { 1063f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!UnreachableBlock) { 1064f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall UnreachableBlock = createBasicBlock("unreachable"); 1065f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); 1066f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1067f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return UnreachableBlock; 1068f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1069f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1070f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDest() { 1071f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!EHStack.requiresLandingPad()) return 0; 1072f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return getInvokeDestImpl(); 1073f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 10749834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1075d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } 107669243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson 10779834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 10789834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar // Objective-C 10799834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 10809834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1081391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner void GenerateObjCMethod(const ObjCMethodDecl *OMD); 1082af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 10830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void StartObjCMethod(const ObjCMethodDecl *MD, 10848d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel const ObjCContainerDecl *CD, 10858d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel SourceLocation StartLoc); 1086af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 10870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCGetter - Synthesize an Objective-C property getter function. 1088fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCGetter(ObjCImplementationDecl *IMP, 1089fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 10902846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian void GenerateObjCGetterBody(ObjCIvarDecl *Ivar, bool IsAtomic, bool IsStrong); 10912846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian void GenerateObjCAtomicSetterBody(ObjCMethodDecl *OMD, 10922846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian ObjCIvarDecl *Ivar); 10932846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian 1094109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, 1095109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *MD, bool ctor); 1096af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 10970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCSetter - Synthesize an Objective-C property setter function 10980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// for the given property. 1099fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCSetter(ObjCImplementationDecl *IMP, 1100fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 11010b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian bool IndirectObjCSetterArg(const CGFunctionInfo &FI); 110215bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IvarTypeWithAggrGCObjects(QualType Ty); 1103af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 11044e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 11054e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump // Block Bits 11064e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 11074e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 11086b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *EmitBlockLiteral(const BlockExpr *); 11092a7eb28397148079cbc8e54e8a3871ef01c4f4bcBlaine Garst llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, 111089ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const CGBlockInfo &Info, 11110892099dbc640720400a1d9decd2733a09d733e5Mike Stump const llvm::StructType *, 1112d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *BlockVarLayout); 11134e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1114564360be450b319aeafc26698be9811837bfb826Fariborz Jahanian llvm::Function *GenerateBlockFunction(GlobalDecl GD, 11156b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &Info, 11166cc88f78fd36d3511b89412b193494b3e423cbffMike Stump const Decl *OuterFuncDecl, 11176b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const DeclMapTy &ldm); 11184e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1119d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); 1120d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); 1121d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1122d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); 1123d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 11245af02db5a48476e0748f135369663080eae87c64John McCall class AutoVarEmission; 11255af02db5a48476e0748f135369663080eae87c64John McCall 11265af02db5a48476e0748f135369663080eae87c64John McCall void emitByrefStructureInit(const AutoVarEmission &emission); 11275af02db5a48476e0748f135369663080eae87c64John McCall void enterByrefCleanup(const AutoVarEmission &emission); 11285af02db5a48476e0748f135369663080eae87c64John McCall 11296b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *LoadBlockStruct() { 11306b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall assert(BlockPointer && "no block pointer set!"); 11316b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall return BlockPointer; 11326b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall } 11334e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1134ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockCXXThisPointer(const CXXThisExpr *E); 1135ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockDecl(const BlockDeclRefExpr *E); 1136ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall llvm::Value *GetAddrOfBlockDecl(const BlockDeclRefExpr *E) { 1137ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall return GetAddrOfBlockDecl(E->getDecl(), E->isByRef()); 1138ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall } 11396b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); 11406b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const llvm::Type *BuildByRefType(const VarDecl *var); 1141dab514fc30242c7afd6c03956e46136c400fb0d3Mike Stump 1142d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCode(GlobalDecl GD, llvm::Function *Fn, 1143d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo); 11440ff8bafde95f6fa51ccea70738c1b99db870bddcAnders Carlsson void StartFunction(GlobalDecl GD, QualType RetTy, 11457c086516f3cc9fba2733b1919973206c6ba4b171Daniel Dunbar llvm::Function *Fn, 1146d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo, 11472284ac9ec80299fcdefae9a2787cf85105a0f203Daniel Dunbar const FunctionArgList &Args, 11489c6082fe89c61af697f017aa80937581cc2128d8Tilmann Scheller SourceLocation StartLoc); 1149a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 11509fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitConstructorBody(FunctionArgList &Args); 11519fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitDestructorBody(FunctionArgList &Args); 11529fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitFunctionBody(FunctionArgList &Args); 1153a355e07454463b19829ac92ffd115a097faff0e0John McCall 11540dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitReturnBlock - Emit the unified return block, trying to avoid its 11550dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emission when possible. 11561c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar void EmitReturnBlock(); 11571c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar 11580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// FinishFunction - Complete IR generation of the current function. It is 11590dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// legal to call this function even if there is no current insertion point. 1160af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar void FinishFunction(SourceLocation EndLoc=SourceLocation()); 116117b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1162519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson /// GenerateThunk - Generate a thunk for the given method. 1163d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 1164d26bc76c98006609002d9930f8840490e88ac5b5John McCall GlobalDecl GD, const ThunkInfo &Thunk); 11659cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 11667dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 11677dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman GlobalDecl GD, const ThunkInfo &Thunk); 11687dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman 1169fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, 1170fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor FunctionArgList &Args); 11711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1172d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// InitializeVTablePointer - Initialize the vtable pointer of the given 1173d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// subobject. 1174d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// 11759cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointer(BaseSubobject Base, 1176b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1177d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1178d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson llvm::Constant *VTable, 1179d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson const CXXRecordDecl *VTableClass); 1180d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1181d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; 11829cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointers(BaseSubobject Base, 1183b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1184d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1185603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson bool BaseIsNonVirtualPrimaryBase, 1186603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson llvm::Constant *VTable, 1187603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson const CXXRecordDecl *VTableClass, 1188603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson VisitedVirtualBasesSetTy& VBases); 118977a259c6dbf582949af8a243b472c0c7faa373a6Eli Friedman 1190603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); 1191d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1192043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// GetVTablePtr - Return the Value of the vtable pointer member pointed 1193043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// to by This. 1194043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman llvm::Value *GetVTablePtr(llvm::Value *This, const llvm::Type *Ty); 1195d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 119650da2cadcc6da86abff6772de65280ace2cabc94John McCall /// EnterDtorCleanups - Enter the cleanups necessary to complete the 119750da2cadcc6da86abff6772de65280ace2cabc94John McCall /// given phase of destruction for a destructor. The end result 119850da2cadcc6da86abff6772de65280ace2cabc94John McCall /// should call destructors on members and base classes in reverse 119950da2cadcc6da86abff6772de65280ace2cabc94John McCall /// order of their construction. 120050da2cadcc6da86abff6772de65280ace2cabc94John McCall void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); 12011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12027255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// ShouldInstrumentFunction - Return true if the current function should be 12037255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumented with __cyg_profile_func_* calls 12047255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner bool ShouldInstrumentFunction(); 12057255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 12067255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// EmitFunctionInstrumentation - Emit LLVM code to call the specified 12077255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumentation function with the current function and the call site, if 12087255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// function instrumentation is enabled. 12097255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner void EmitFunctionInstrumentation(const char *Fn); 12107255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 1211be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky /// EmitMCountInstrumentation - Emit call to .mcount. 1212be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky void EmitMCountInstrumentation(); 1213be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky 12140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionProlog - Emit the target specific LLVM code to load the 12150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// arguments for the given function. This is also responsible for naming the 12160dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM function arguments. 121788b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar void EmitFunctionProlog(const CGFunctionInfo &FI, 121888b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Function *Fn, 121917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const FunctionArgList &Args); 122017b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 12210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionEpilog - Emit the target specific LLVM code to return the 12220dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// given temporary. 122335b21b884e5c3447a52a74d7ffaba966b07ac81fChris Lattner void EmitFunctionEpilog(const CGFunctionInfo &FI); 122417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1225cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitStartEHSpec - Emit the start of the exception spec. 1226cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitStartEHSpec(const Decl *D); 1227cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1228cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitEndEHSpec - Emit the end of the exception spec. 1229cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitEndEHSpec(const Decl *D); 1230cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1231f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateLandingPad - Return a landing pad that just calls terminate. 1232f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getTerminateLandingPad(); 1233f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1234f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateHandler - Return a handler (not a landing pad, just 1235f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a catch handler) that just calls terminate. This is used when 1236f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a terminate scope encloses a try. 12379b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump llvm::BasicBlock *getTerminateHandler(); 12389b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump 12398b1a343b6b360d63d5dc8a6beb841ce4414c1e00Daniel Dunbar const llvm::Type *ConvertTypeForMem(QualType T); 12405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const llvm::Type *ConvertType(QualType T); 1241bff225ecf77fb891596ecb1b27196310d268365eJohn McCall const llvm::Type *ConvertType(const TypeDecl *T) { 1242bff225ecf77fb891596ecb1b27196310d268365eJohn McCall return ConvertType(getContext().getTypeDeclType(T)); 1243bff225ecf77fb891596ecb1b27196310d268365eJohn McCall } 1244c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner 12450dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LoadObjCSelf - Load the value of self. This function is only valid while 12460dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// generating code for an Objective-C method. 1247c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner llvm::Value *LoadObjCSelf(); 12480dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12490dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// TypeOfSelfObject - Return type of object that this self represents. 125045012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian QualType TypeOfSelfObject(); 12514111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 12525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// hasAggregateLLVMType - Return true if the specified AST type will map into 12535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an aggregate LLVM type or is void. 12545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool hasAggregateLLVMType(QualType T); 125555e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar 125655e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar /// createBasicBlock - Create an LLVM basic block. 1257d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::BasicBlock *createBasicBlock(llvm::StringRef name = "", 1258d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Function *parent = 0, 1259d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::BasicBlock *before = 0) { 126029ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#ifdef NDEBUG 1261d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); 126229ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#else 1263d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); 126429ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#endif 126555e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar } 12660dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getBasicBlockForLabel - Return the LLVM basicblock that the specified 12685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// label maps to. 1269ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner JumpDest getJumpDestForLabel(const LabelDecl *S); 12700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1271f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// SimplifyForwardingBlocks - If the given basic block is only a branch to 1272f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// another basic block, simplify it. This assumes that no other code could 1273f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// potentially reference the basic block. 1274aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar void SimplifyForwardingBlocks(llvm::BasicBlock *BB); 1275aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar 12760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBlock - Emit the given block \arg BB and set it as the insert point, 12770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// adding a fall-through branch from the current insert block if 12780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessary. It is legal to call this function even if there is no current 12790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 1280a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar /// 12810dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// IsFinished - If true, indicates that the caller has finished emitting 12820dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// branches to the given block and does not expect to emit code into it. This 12830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// means the block can be ignored if it is unreachable. 1284a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); 1285824e3bd76b2e32db2ec6e4d2d113413e518d1c63Daniel Dunbar 12860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBranch - Emit a branch to the specified basic block from the current 12870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insert block, taking care to avoid creation of branches from dummy 12880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// blocks. It is legal to call this function even if there is no current 12890dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 12905e08ad3cc62ab94649959ae227a9a411a729bf49Daniel Dunbar /// 12910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function clears the current insertion point. The caller should follow 12920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calls to this function with calls to Emit*Block prior to generation new 12930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// code. 1294d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar void EmitBranch(llvm::BasicBlock *Block); 1295d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar 12960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// HaveInsertPoint - True if an insertion point is defined. If not, this 12970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// indicates that the current code being emitted is unreachable. 12980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump bool HaveInsertPoint() const { 1299a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar return Builder.GetInsertBlock() != 0; 1300a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 1301a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 13020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint - Ensure that an insertion point is defined so that 13030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emitted IR has a place to go. Note that by definition, if this function 13040dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// creates a block then that block is unreachable; callers may do better to 13050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// detect when no insertion point is defined and simply skip IR generation. 1306a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar void EnsureInsertPoint() { 1307a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar if (!HaveInsertPoint()) 1308a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar EmitBlock(createBasicBlock()); 1309a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 13100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1311488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar /// ErrorUnsupported - Print out an error that codegen doesn't support the 1312dc5e8268292046114ffe02e48773572a91a310f1Chris Lattner /// specified stmt yet. 131390df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar void ErrorUnsupported(const Stmt *S, const char *Type, 131490df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError=false); 13155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 13175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Helpers 13185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 13190dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1320983e3d7dac99aed376939f1a4daadef98e09c3b9Daniel Dunbar LValue MakeAddrLValue(llvm::Value *V, QualType T, unsigned Alignment = 0) { 13213d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return LValue::MakeAddr(V, T, Alignment, getContext(), 13223d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman CGM.getTBAAInfo(T)); 13235cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar } 13245cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar 13255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CreateTempAlloca - This creates a alloca and inserts it into the entry 1326195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// block. The caller is responsible for setting an appropriate alignment on 1327195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// the alloca. 13285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::AllocaInst *CreateTempAlloca(const llvm::Type *Ty, 1329259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar const llvm::Twine &Name = "tmp"); 13300dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1331ac418162692a951ca3796d6830496a85a2d12493John McCall /// InitTempAlloca - Provide an initial value for the given alloca. 1332ac418162692a951ca3796d6830496a85a2d12493John McCall void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); 1333ac418162692a951ca3796d6830496a85a2d12493John McCall 13349bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// CreateIRTemp - Create a temporary IR object of the given type, with 13359bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// appropriate alignment. This routine should only be used when an temporary 13369bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// value needs to be stored into an alloca (for example, to avoid explicit 13379bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// PHI construction), but the type is the IR type, not the type appropriate 13389bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// for storing in memory. 1339121b3facb4e0585d23766f9c1e4fdf9018a4b217Chris Lattner llvm::AllocaInst *CreateIRTemp(QualType T, const llvm::Twine &Name = "tmp"); 13409bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar 1341195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// CreateMemTemp - Create a temporary memory object of the given type, with 1342195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// appropriate alignment. 1343121b3facb4e0585d23766f9c1e4fdf9018a4b217Chris Lattner llvm::AllocaInst *CreateMemTemp(QualType T, const llvm::Twine &Name = "tmp"); 1344195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar 1345558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// CreateAggTemp - Create a temporary memory object for the given 1346558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// aggregate type. 1347558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot CreateAggTemp(QualType T, const llvm::Twine &Name = "tmp") { 1348558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall return AggValueSlot::forAddr(CreateMemTemp(T, Name), false, false); 1349558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall } 1350558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall 1351d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall /// Emit a cast to void* in the appropriate address space. 1352d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *EmitCastToVoidPtr(llvm::Value *value); 1353d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 13545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateExprAsBool - Perform the usual unary conversions on the specified 13555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression and compare the result against zero, returning an Int1Ty value. 13565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Value *EvaluateExprAsBool(const Expr *E); 13575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13582a41637a995affa1563f4d82a8b026e326a2faa0John McCall /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. 13592a41637a995affa1563f4d82a8b026e326a2faa0John McCall void EmitIgnoredExpr(const Expr *E); 13602a41637a995affa1563f4d82a8b026e326a2faa0John McCall 13619b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// EmitAnyExpr - Emit code to compute the specified expression which can have 13629b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// any type. The result is returned as an RValue struct. If this is an 13639b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// aggregate expression, the aggloc/agglocvolatile arguments indicate where 13649b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// the result should be returned. 136549d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// 136649d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// \param IgnoreResult - True if the resulting value isn't used. 1367558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExpr(const Expr *E, 1368558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AggSlot = AggValueSlot::ignored(), 1369558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IgnoreResult = false); 1370d9363c3a80168283b3da518b4e17f545a6246857Devang Patel 13710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // EmitVAListRef - Emit a "reference" to a va_list; this is either the address 13720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // or the value of the expression, depending on how va_list is defined. 13734fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman llvm::Value *EmitVAListRef(const Expr *E); 13744fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman 13750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will 13760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// always be accessible even if no aggregate location is provided. 1377558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExprToTemp(const Expr *E); 137846f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbar 137960d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitAnyExprToMem - Emits the code necessary to evaluate an 13803d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall /// arbitrary expression into the given memory location. 13813d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, 1382558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IsLocationVolatile, 1383558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IsInitializer); 13843d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall 138560d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitExprAsInit - Emits the code necessary to initialize a 138660d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// location in memory with the given initializer. 138760d3365b46eb826fba44483583c0051ac5c41fe3John McCall void EmitExprAsInit(const Expr *init, const VarDecl *var, 138860d3365b46eb826fba44483583c0051ac5c41fe3John McCall llvm::Value *loc, CharUnits alignment, 138960d3365b46eb826fba44483583c0051ac5c41fe3John McCall bool capturedByInit); 139060d3365b46eb826fba44483583c0051ac5c41fe3John McCall 139127fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// EmitAggregateCopy - Emit an aggrate copy. 139227fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// 139327fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// \param isVolatile - True iff either the source or the destination is 139427fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// volatile. 13957482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, 139627fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump QualType EltTy, bool isVolatile=false); 13977482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar 139851b09f2c528c8460b5465c676173324e44176d62Devang Patel /// StartBlock - Start new block named N. If insert block is a dummy block 139951b09f2c528c8460b5465c676173324e44176d62Devang Patel /// then reuse it. 140051b09f2c528c8460b5465c676173324e44176d62Devang Patel void StartBlock(const char *N); 140151b09f2c528c8460b5465c676173324e44176d62Devang Patel 1402813733577d33ec56479667b49e1bff42dc6bba90Lauro Ramos Venancio /// GetAddrOfStaticLocalVar - Return the address of a static local variable. 14034c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD) { 14044c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return cast<llvm::Constant>(GetAddrOfLocalVar(BVD)); 14054c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 14064f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1407dde0a94120915fa925d1ffcdb997c7b44dc9fa21Anders Carlsson /// GetAddrOfLocalVar - Return the address of a local variable. 14084c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { 14094c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *Res = LocalDeclMap[VD]; 14104c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); 14114c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return Res; 14124c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 14130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 141456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueLValueMapping - Given an opaque value expression (which 141556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an l-value), return its mapping. 141656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { 141756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(OpaqueValueMapping::shouldBindAsLValue(e)); 141856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 141956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator 142056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueLValues.find(e); 142156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); 142256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return it->second; 142356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 142456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 142556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueRValueMapping - Given an opaque value expression (which 142656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an r-value), return its mapping. 142756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { 142856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!OpaqueValueMapping::shouldBindAsLValue(e)); 142956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 143056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator 143156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueRValues.find(e); 143256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); 1433e996ffd240f20a1048179d7727a6ee3227261921John McCall return it->second; 1434e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1435e996ffd240f20a1048179d7727a6ee3227261921John McCall 14364f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// getAccessedFieldNo - Given an encoded value and a result number, return 14374f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// the input field number being accessed. 14384f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); 14394f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1440ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); 14413d00fdc82fd550ae4bfbb2e700a1fc85bbd6d6fdChris Lattner llvm::BasicBlock *GetIndirectGotoBlock(); 14420ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 14431884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// EmitNullInitialization - Generate code to set a value of the given type to 14441884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// null, If the type contains data member pointers, they will be initialized 14451884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// to -1 in accordance with the Itanium C++ ABI. 14461884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); 1447ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1448ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // EmitVAArg - Generate code to get an argument from the passed in pointer 1449ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // and update it accordingly. The return value is a pointer to the argument. 1450ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // FIXME: We should be able to get rid of this method and use the va_arg 14510dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // instruction in LLVM instead once it works well enough. 1452ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); 1453f666b7780d04186521adcaedb0e15dfa4d5e6933Anders Carlsson 1454f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// EmitVLASize - Generate code for any VLA size expressions that might occur 1455f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// in a variably modified type. If Ty is a VLA, will return the value that 1456f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// corresponds to the size in bytes of the VLA type. Will return 0 otherwise. 1457d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1458d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 145960d35413662ebdcd1d31e34a8a7c665eb6977f1eAnders Carlsson llvm::Value *EmitVLASize(QualType Ty); 14600dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1461dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson // GetVLASize - Returns an LLVM value that corresponds to the size in bytes 1462dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson // of a variable length array type. 1463dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson llvm::Value *GetVLASize(const VariableArrayType *); 1464dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson 14655f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// LoadCXXThis - Load the value of 'this'. This function is only valid while 14665f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// generating code for an C++ member function. 14672504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXThis() { 14682504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXThisValue && "no 'this' value for this function"); 14692504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXThisValue; 14702504941793b549323f9d29c62507cf21d865fadeJohn McCall } 14711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1472c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have 1473c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// virtual bases. 14742504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXVTT() { 14752504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXVTTValue && "no VTT value for this function"); 14762504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXVTTValue; 14772504941793b549323f9d29c62507cf21d865fadeJohn McCall } 1478bff225ecf77fb891596ecb1b27196310d268365eJohn McCall 1479bff225ecf77fb891596ecb1b27196310d268365eJohn McCall /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a 14808561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson /// complete class to the given direct base. 14818561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson llvm::Value * 14828561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, 14838561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 14848561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Base, 14858561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson bool BaseIsVirtual); 1486a88ad5618fcb07c5374c79d6781a33234984b039Anders Carlsson 1487f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// GetAddressOfBaseClass - This function will add the necessary delta to the 1488f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// load of 'this' and returns address of the base class. 14899cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, 14908561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1491f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1492f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 149334a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson bool NullCheckValue); 149434a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson 1495a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, 14968561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1497f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1498f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 14995a0f49ebc83e7fe0da07b9964c44b0a7fae270cbAnders Carlsson bool NullCheckValue); 1500a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson 1501bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson llvm::Value *GetVirtualBaseClassOffset(llvm::Value *This, 1502bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *ClassDecl, 1503bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *BaseClassDecl); 15049cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1505c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, 1506c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall CXXCtorType CtorType, 1507c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall const FunctionArgList &Args); 1508059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // It's important not to confuse this and the previous function. Delegating 1509059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // constructors are the C++0x feature. The constructor delegate optimization 1510059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // is used to reduce duplication in the base and complete consturctors where 1511059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // they are substantially the same. 1512059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, 1513059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt const FunctionArgList &Args); 1514155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, 1515155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson bool ForVirtualBase, llvm::Value *This, 1516b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1517b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 151834999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 151934999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, 152034999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian llvm::Value *This, llvm::Value *Src, 152134999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgBeg, 152234999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgEnd); 15231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1524288dcaf329c49b01dacd5c1dd9f35609555feecdFariborz Jahanian void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1525569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson const ConstantArrayType *ArrayTy, 15265d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 15275d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 152859174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 152959174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 15309cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1531569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1532569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson llvm::Value *NumElements, 15335d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 15345d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 153559174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 153659174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 1537b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson 1538f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian void EmitCXXAggrDestructorCall(const CXXDestructorDecl *D, 1539f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian const ArrayType *Array, 1540f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian llvm::Value *This); 15411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 154272c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian void EmitCXXAggrDestructorCall(const CXXDestructorDecl *D, 154372c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian llvm::Value *NumElements, 154472c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian llvm::Value *This); 154572c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian 154602e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson llvm::Function *GenerateCXXAggrDestructorHelper(const CXXDestructorDecl *D, 154702e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson const ArrayType *Array, 154802e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson llvm::Value *This); 154988f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian 15507267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, 15518e6404ca28d6bbb76e97ea2a53a74816c2a74665Anders Carlsson bool ForVirtualBase, llvm::Value *This); 15529cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1553ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian void EmitNewArrayInitializer(const CXXNewExpr *E, llvm::Value *NewPtr, 1554ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian llvm::Value *NumElements); 15551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1556f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitCXXTemporary(const CXXTemporary *Temporary, llvm::Value *Ptr); 15571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1558a00703dccbdc6cc4a293db38477dea7db5538c7eAnders Carlsson llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); 155960e282cc1e508be327b0481cecedc206873cb86aAnders Carlsson void EmitCXXDeleteExpr(const CXXDeleteExpr *E); 15601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15614bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, 15624bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman QualType DeleteTy); 15634bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman 1564c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); 1565c849c052d6b4b70f2651c1969531861a5f230053Mike Stump llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); 1566c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump 1567b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump void EmitCheck(llvm::Value *, unsigned Size); 1568b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 1569dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, 1570dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 1571dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, 1572dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 15735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 15745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Declaration Emission 15755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 15760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1577d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// EmitDecl - Emit a declaration. 1578d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1579d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 15805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDecl(const Decl &D); 1581d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1582b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitVarDecl - Emit a local variable declaration. 1583d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1584d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1585b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitVarDecl(const VarDecl &D); 1586d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1587f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, 1588f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *Address); 1589f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1590b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitAutoVarDecl - Emit an auto variable declaration. 1591d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1592d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 159334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarDecl(const VarDecl &D); 159434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 159534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall class AutoVarEmission { 159634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall friend class CodeGenFunction; 159734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 159857b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall const VarDecl *Variable; 159934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 160034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The alignment of the variable. 160134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall CharUnits Alignment; 160234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 160334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The address of the alloca. Null if the variable was emitted 160434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// as a global constant. 160534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *Address; 160634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 160734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *NRVOFlag; 160834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 160934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is a __block variable. 161034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsByRef; 161134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 161234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is of aggregate type and has a constant 161334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// initializer. 161434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsConstantAggregate; 161534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 161657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall struct Invalid {}; 161757b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall AutoVarEmission(Invalid) : Variable(0) {} 161857b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 161934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission(const VarDecl &variable) 162057b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall : Variable(&variable), Address(0), NRVOFlag(0), 162134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall IsByRef(false), IsConstantAggregate(false) {} 162234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 162334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool wasEmittedAsGlobal() const { return Address == 0; } 162434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 162534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall public: 162657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } 162757b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 162834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Returns the address of the object within this declaration. 162934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Note that this does not chase the forwarding pointer for 163034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// __block decls. 163134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { 163234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall if (!IsByRef) return Address; 163334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 163434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall return CGF.Builder.CreateStructGEP(Address, 163557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall CGF.getByRefValueLLVMField(Variable), 163657b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall Variable->getNameAsString()); 163734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall } 163834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall }; 163934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); 164034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarInit(const AutoVarEmission &emission); 164134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarCleanups(const AutoVarEmission &emission); 1642d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1643b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitStaticVarDecl(const VarDecl &D, 1644b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalValue::LinkageTypes Linkage); 1645b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar 1646b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. 1647093ac461b37a573dcf226fa55faed96f318169b9Devang Patel void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); 16480dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 164956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protectFromPeepholes - Protect a value that we're intending to 165056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// store to the side, but which will probably be used later, from 165156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// aggressive peepholing optimizations that might delete it. 165256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 165356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Pass the result to unprotectFromPeepholes to declare that 165456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protection is no longer required. 165556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 165656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// There's no particular reason why this shouldn't apply to 165756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// l-values, it's just that no existing peepholes work on pointers. 165856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection protectFromPeepholes(RValue rvalue); 165956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void unprotectFromPeepholes(PeepholeProtection protection); 166056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 16615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 16625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Statement Emission 16635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 16645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. 16660912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitStopPoint(const Stmt *S); 16670912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 16680dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStmt - Emit the code for the statement \arg S. It is legal to call 16690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// this function even if there is no current insertion point. 16700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// 16710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function may clear the current insertion point; callers should use 16720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint if they wish to subsequently generate code without first 16730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calling EmitBlock, EmitBranch, or EmitStmt. 16745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStmt(const Stmt *S); 1675a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 16760912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// EmitSimpleStmt - Try to emit a "simple" statement which does not 16770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessarily require an insertion point or debug information; typically 16780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// because the statement amounts to a jump or a container of other 16790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// statements. 16800912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// 16810912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// \return True if the statement was handled. 16820912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar bool EmitSimpleStmt(const Stmt *S); 16830912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 16849b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, 1685558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AVS = AggValueSlot::ignored()); 1686a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 16870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitLabel - Emit the block for the given label. It is legal to call this 16880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// function even if there is no current insertion point. 1689ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. 1690a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 16915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitLabelStmt(const LabelStmt &S); 16925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitGotoStmt(const GotoStmt &S); 16930ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar void EmitIndirectGotoStmt(const IndirectGotoStmt &S); 16945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitIfStmt(const IfStmt &S); 16955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitWhileStmt(const WhileStmt &S); 16965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDoStmt(const DoStmt &S); 16975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitForStmt(const ForStmt &S); 16985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitReturnStmt(const ReturnStmt &S); 16995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDeclStmt(const DeclStmt &S); 17000912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitBreakStmt(const BreakStmt &S); 17010912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitContinueStmt(const ContinueStmt &S); 170251b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitSwitchStmt(const SwitchStmt &S); 170351b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitDefaultStmt(const DefaultStmt &S); 170451b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitCaseStmt(const CaseStmt &S); 1705c049e4f406a7f7179eba98659044a32508e53289Devang Patel void EmitCaseStmtRange(const CaseStmt &S); 1706fb1aeb804c08d5288a923fb278161783e6abdc66Anders Carlsson void EmitAsmStmt(const AsmStmt &S); 17070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 17083d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); 170964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); 171064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); 171110cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); 17120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 171393c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Constant *getUnwindResumeFn(); 171486a3a03667bdb0dcab7e6a2877dfd234b07a6d43Douglas Gregor llvm::Constant *getUnwindResumeOrRethrowFn(); 171559a7000a79118e4c140885ccbb2ac6a686a73092John McCall void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 171659a7000a79118e4c140885ccbb2ac6a686a73092John McCall void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 17179fc6a7774643a810c8501dae2323e863fefb623eJohn McCall 17186815e941998659a55c20c147861b0f437928c3d8Anders Carlsson void EmitCXXTryStmt(const CXXTryStmt &S); 1719ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith void EmitCXXForRangeStmt(const CXXForRangeStmt &S); 17209cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 17215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 17225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LValue Expression Emission 17235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 17245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 172513e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. 172613e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar RValue GetUndefRValue(QualType Ty); 172713e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar 1728ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E 1729ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// and issue an ErrorUnsupported style diagnostic (using the 1730ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// provided Name). 1731ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar RValue EmitUnsupportedRValue(const Expr *E, 1732ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar const char *Name); 1733ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar 17340dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue 17350dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an ErrorUnsupported style diagnostic (using the provided Name). 17366ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar LValue EmitUnsupportedLValue(const Expr *E, 17376ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar const char *Name); 17386ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar 17395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLValue - Emit code to compute a designator that specifies the location 17405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the expression. 17415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// This can return one of two things: a simple address or a bitfield 17435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// reference. In either case, the LLVM Value* in the LValue structure is 17445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// guaranteed to be an LLVM pointer type. 17455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a bitfield reference, nothing about the pointee type of 17475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the LLVM value is known: For example, it may not be a pointer to an 17485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// integer. 17495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a normal address, and if the lvalue's C type is fixed 17515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// size, this method guarantees that the returned pointer type will point to 17525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an LLVM type of the same size of the lvalue's type. If the lvalue has a 17535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// variable length type, this is not possible. 17545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 17555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitLValue(const Expr *E); 17560dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1757b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// EmitCheckedLValue - Same as EmitLValue but additionally we generate 1758b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// checking code to guard against undefined behavior. This is only 1759b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// suitable when we know that the address will be used to access the 1760b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// object. 1761b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump LValue EmitCheckedLValue(const Expr *E); 1762b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 176326815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitToMemory - Change a scalar value from its value 176426815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its in-memory representation. 176526815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); 176626815d97c5743481e317f17a8d53a6819d061862John McCall 176726815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitFromMemory - Change a scalar value from its memory 176826815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its value representation. 176926815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); 177026815d97c5743481e317f17a8d53a6819d061862John McCall 17719d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitLoadOfScalar - Load a scalar value from an address, taking 17729d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 17739d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 177409429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, 17753d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman unsigned Alignment, QualType Ty, 17763d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 17779d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 17789d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitStoreOfScalar - Store a scalar value to an address, taking 17799d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 17809d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 178109429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, 17823d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman bool Volatile, unsigned Alignment, QualType Ty, 17833d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 17849d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 17855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLoadOfLValue - Given an expression that represents a value lvalue, 17865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this method emits the address of the lvalue, then loads the result as an 17875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// rvalue, returning the rvalue. 17885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RValue EmitLoadOfLValue(LValue V, QualType LVType); 1789213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman RValue EmitLoadOfExtVectorElementLValue(LValue V, QualType LVType); 17903b8c22d93da1432b2d4cea779d14912645c93866Lauro Ramos Venancio RValue EmitLoadOfBitfieldLValue(LValue LV, QualType ExprType); 1791119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall RValue EmitLoadOfPropertyRefLValue(LValue LV, 1792119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall ReturnValueSlot Return = ReturnValueSlot()); 17930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 17945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitStoreThroughLValue - Store the specified rvalue into the specified 17955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lvalue, where both are guaranteed to the have the same type, and that type 17965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is 'Ty'. 17975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStoreThroughLValue(RValue Src, LValue Dst, QualType Ty); 1798213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst, 1799213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman QualType Ty); 1800119a1c6c4029d30cae7b31a2826aa0ff70d01668John McCall void EmitStoreThroughPropertyRefLValue(RValue Src, LValue Dst); 1801ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar 18020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue - Store Src into Dst with same constraints as 18030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue. 1804ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar /// 18050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// \param Result [out] - If non-null, this will be set to a Value* for the 18060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// bit-field contents after the store, appropriate for use as the result of 18070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an assignment to the bit-field. 1808ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, QualType Ty, 1809ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar llvm::Value **Result=0); 18100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 181183ce9d4a552987d34cbd500e983db8d770232379John McCall /// Emit an l-value for an assignment (simple or compound) of complex type. 181283ce9d4a552987d34cbd500e983db8d770232379John McCall LValue EmitComplexAssignmentLValue(const BinaryOperator *E); 18132a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); 181483ce9d4a552987d34cbd500e983db8d770232379John McCall 1815fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner // Note: only available for agg return types 181680e62c29fe21cd06c93eba6e72b7e32dca06fcf9Daniel Dunbar LValue EmitBinaryOperatorLValue(const BinaryOperator *E); 18172a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); 18185b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 181922c940ee588a420cd2e6c8f68be2ac3cc80061ffChristopher Lamb LValue EmitCallExprLValue(const CallExpr *E); 18205b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 18215b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar LValue EmitVAArgExprLValue(const VAArgExpr *E); 18225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitDeclRefLValue(const DeclRefExpr *E); 18235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitStringLiteralLValue(const StringLiteral *E); 1824eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); 1825d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner LValue EmitPredefinedLValue(const PredefinedExpr *E); 18265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitUnaryOpLValue(const UnaryOperator *E); 18275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); 1828213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); 1829b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel LValue EmitMemberExpr(const MemberExpr *E); 1830820bca41c3899374775d2a1dfc2ef2e22aaf1c7bFariborz Jahanian LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); 183106e863f2902b8ba55b056308875c19f7ba3dab25Eli Friedman LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); 183256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); 183375dfedaf702822c9e51a4f3c5d3ecf2d2ad99272Chris Lattner LValue EmitCastLValue(const CastExpr *E); 1834ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); 1835e996ffd240f20a1048179d7727a6ee3227261921John McCall LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); 18369cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 18372a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, 183829e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar const ObjCIvarDecl *Ivar); 1839a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall LValue EmitLValueForAnonRecordField(llvm::Value* Base, 184000eb3f9c5b33e3d99aee1f8b75dd9c9678fdd66bFrancois Pichet const IndirectFieldDecl* Field, 1841a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall unsigned CVRQualifiers); 18420ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForField(llvm::Value* Base, const FieldDecl* Field, 1843e6d2a534851a649485cb087e9dfcaf8a65886858Anders Carlsson unsigned CVRQualifiers); 18449cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 184506a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that 184606a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// if the Field is a reference, this will return the address of the reference 184706a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// and not the address of the value stored in the reference. 18489cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer LValue EmitLValueForFieldInitialization(llvm::Value* Base, 184906a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson const FieldDecl* Field, 185006a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson unsigned CVRQualifiers); 18519cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 185245012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian LValue EmitLValueForIvar(QualType ObjectTy, 185345012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian llvm::Value* Base, const ObjCIvarDecl *Ivar, 185429e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar unsigned CVRQualifiers); 185529e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 18560ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForBitfield(llvm::Value* Base, const FieldDecl* Field, 1857598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 1858fd64bb635dc221baa19f81d5d2a084f7eb269f7fFariborz Jahanian 1859a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump LValue EmitBlockDeclRefLValue(const BlockDeclRefExpr *E); 1860a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump 1861b58d017f2b9eeed33f2ab3ede968b89cf5296bf2Anders Carlsson LValue EmitCXXConstructLValue(const CXXConstructExpr *E); 1862e61c9e80a108b5db7e5f0e702f0e455d737c6390Anders Carlsson LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); 18634765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall LValue EmitExprWithCleanupsLValue(const ExprWithCleanups *E); 1864c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); 18659cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 18660a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); 1867391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); 186885c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar LValue EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E); 1869654599454c8e6cc83b1b9b3af43c49c2f66a26cbChris Lattner LValue EmitStmtExprLValue(const StmtExpr *E); 18708bfd31f9dad09cd52225d868bbd92a9bebe87775Fariborz Jahanian LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); 187103b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); 1872189d6ef40eff11b83b2cda941d5ed89a5cef09b2John McCall void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); 187356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 18745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 1875883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner // Scalar Expression Emission 18765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 18775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 18780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitCall - Generate a call of the given function, expecting the given 18790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// result type, and using the given argument list which specifies both the 18800dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM arguments and the types they were derived from. 1881c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar /// 1882f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// \param TargetDecl - If given, the decl of the function in a direct call; 1883f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// used to set attributes on the call (noreturn, etc.). 188488b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar RValue EmitCall(const CGFunctionInfo &FnInfo, 188588b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Value *Callee, 1886f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson ReturnValueSlot ReturnValue, 1887c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const CallArgList &Args, 1888dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall const Decl *TargetDecl = 0, 18894b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction **callOrInvoke = 0); 18901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 189131777a2540879051a3c643b90e02c3fd3d315243Anders Carlsson RValue EmitCall(QualType FnType, llvm::Value *Callee, 1892d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue, 1893986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgBeg, 1894986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgEnd, 1895986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson const Decl *TargetDecl = 0); 18969cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitCallExpr(const CallExpr *E, 1897d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue = ReturnValueSlot()); 18981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1899f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 1900f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value * const *ArgBegin, 1901f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value * const *ArgEnd, 1902f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const llvm::Twine &Name = ""); 1903f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1904566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, 1905f0070dbae9535836ad41711081465dec2259786bMike Stump const llvm::Type *Ty); 19069cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, 190783eedd9fa800c273647c7a90465ea9c110f9d93cAnders Carlsson llvm::Value *This, const llvm::Type *Ty); 19082726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, 19092726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian NestedNameSpecifier *Qual, 19102726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian const llvm::Type *Ty); 1911ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian 1912ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, 1913ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian CXXDtorType Type, 1914771c678c04f5f685b4f188ec6c2fd88ad0f7457fFariborz Jahanian const CXXRecordDecl *RD); 1915566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson 1916b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson RValue EmitCXXMemberCall(const CXXMethodDecl *MD, 1917b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *Callee, 1918a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue, 1919b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *This, 1920c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson llvm::Value *VTT, 1921b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1922b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 1923a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, 1924a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 1925a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, 1926a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 19275549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 1928a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, 1929a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson const CXXMethodDecl *MD, 1930a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *This); 19310f294632f36459174199b77699e339715244b5abAnders Carlsson RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, 1932a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson const CXXMethodDecl *MD, 1933a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 19341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19359cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 19361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RValue EmitBuiltinExpr(const FunctionDecl *FD, 1937ef2abfee3ea16ec74942dc09e9e425f46aeb2582Daniel Dunbar unsigned BuiltinID, const CallExpr *E); 19385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1939a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); 194009429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 19410dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call 19420dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is unhandled by the current target. 1943f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 1944f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar 19452752c0137d95aa2f4ee1cdff4b564bac842e041bChris Lattner llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 19469cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *EmitNeonCall(llvm::Function *F, 194730d91718a676177f0d0d0210ce4fdb4f616df6e5Nate Begeman llvm::SmallVectorImpl<llvm::Value*> &O, 1948db3d4d036037f379f12643e067b229862d61e932Bob Wilson const char *name, 194961eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman unsigned shift = 0, bool rightshift = false); 1950cf55652cf668c1402eee0b12edd2e5a1bc34d7a1Bob Wilson llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); 1951464ccb68f22a7e1c0a2844551c16f721540c91c3Nate Begeman llvm::Value *EmitNeonShiftVector(llvm::Value *V, const llvm::Type *Ty, 195261eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman bool negateForRightShift); 19539cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1954aa51e513850688b7963efc62abf1eface7037602Bill Wendling llvm::Value *BuildVector(const llvm::SmallVectorImpl<llvm::Value*> &Ops); 1955564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); 1956564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 19570dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1958ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); 19597f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); 19608fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); 1961ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, 1962ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 19638fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 19644029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in 19654029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// expression. Will emit a temporary variable if E is not an LValue. 19669cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitReferenceBindingToExpr(const Expr* E, 196732f36baa6c8d491c374af622b4e3ac28d597453cAnders Carlsson const NamedDecl *InitializedDecl); 19683aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 1969883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 1970bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expression Emission 1971883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 1972bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner 1973bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expressions are broken into three classes: scalar, complex, aggregate. 19740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 19750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitScalarExpr - Emit the computation of the specified expression of LLVM 19760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// scalar type, returning the result. 197714c5cbf59cffee52275230922283a247de407712Anders Carlsson llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); 19780dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 19793707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 19803707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 19813707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, 19823707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner QualType DstTy); 19830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 19844f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 19850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// complex type to the specified destination type, where the destination type 19860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is an LLVM scalar type. 19874f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, 19884f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy); 19890dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 19900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1991558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// EmitAggExpr - Emit the computation of the specified expression 1992558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// of aggregate type. The result is computed into the given slot, 1993558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// which may be null to indicate that the value is not needed. 1994474e2fe4957e6e72cee36ed189eaf21878ad0e91Fariborz Jahanian void EmitAggExpr(const Expr *E, AggValueSlot AS, bool IgnoreResult = false); 19950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 199618aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// EmitAggExprToLValue - Emit the computation of the specified expression of 199718aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// aggregate type into a temporary LValue. 199818aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar LValue EmitAggExprToLValue(const Expr *E); 199918aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar 2000082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// EmitGCMemmoveCollectable - Emit special API for structs with object 2001082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// pointers. 2002082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, 200308c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 2004082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 2005b6ef18a2b06d6760459e1756a61f79ff496cee19Chris Lattner /// EmitComplexExpr - Emit the computation of the specified expression of 200623b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// complex type, returning the result. 2007b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall ComplexPairTy EmitComplexExpr(const Expr *E, 2008b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreReal = false, 2009b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreImag = false); 20100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 201123b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// EmitComplexExprIntoAddr - Emit the computation of the specified expression 201223b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// of complex type, storing into the specified Value*. 2013190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, 2014190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner bool DestIsVolatile); 20157f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar 20167f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar /// StoreComplexToAddr - Store a complex number into the specified address. 20177f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, 20187f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar bool DestIsVolatile); 20199b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// LoadComplexFromAddr - Load a complex number from the specified address. 20209b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); 20212621fd1d6d3c5eadcae246859f62738645df7540Chris Lattner 2022b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// CreateStaticVarDecl - Create a zero-initialized LLVM global for 2023b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// a static local variable. 2024b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, 2025b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall const char *Separator, 2026f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump llvm::GlobalValue::LinkageTypes Linkage); 20279cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 2028b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the 2029761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// global variable that has already been created for it. If the initializer 2030761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// has a different type than GV does, this may free GV and return a different 2031761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// one. Otherwise it just returns GV. 2032761acc19d966a67f2175783d09412d6ac9463400Chris Lattner llvm::GlobalVariable * 2033b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall AddInitializerToStaticVarDecl(const VarDecl &D, 2034b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *GV); 20359cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 20360096acf421c4609ce7f43e8b05f8c5ca866d4611Daniel Dunbar 20373b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ 20383b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// variable with global storage. 20393b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr); 20403b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson 20413b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalDtorRegistration - Emits a call to register the global ptr 20423b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// with the C++ runtime so that its destructor will be called at exit. 204388f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian void EmitCXXGlobalDtorRegistration(llvm::Constant *DtorFn, 20443b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson llvm::Constant *DeclPtr); 20451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20463030eb82593097502469a8b3fc26112c79c75605John McCall /// Emit code in this function to perform a guarded variable 20473030eb82593097502469a8b3fc26112c79c75605John McCall /// initialization. Guarded initializations are used when it's not 20483030eb82593097502469a8b3fc26112c79c75605John McCall /// possible to prove that an initialization will be done exactly 20493030eb82593097502469a8b3fc26112c79c75605John McCall /// once, e.g. with a static local variable or a static data member 20503030eb82593097502469a8b3fc26112c79c75605John McCall /// of a class template. 20513030eb82593097502469a8b3fc26112c79c75605John McCall void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr); 20525cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 2053efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalInitFunc - Generates code for initializing global 2054efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2055efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalInitFunc(llvm::Function *Fn, 2056efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant **Decls, 2057efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar unsigned NumDecls); 2058efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2059efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalDtorFunc - Generates code for destroying global 2060efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2061efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalDtorFunc(llvm::Function *Fn, 2062810112e28dc839715d17b0a786f23aaa19600ac0Chris Lattner const std::vector<std::pair<llvm::WeakVH, 2063efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant*> > &DtorsAndObjects); 2064efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2065d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, 2066d26bc76c98006609002d9930f8840490e88ac5b5John McCall const VarDecl *D, 20673030eb82593097502469a8b3fc26112c79c75605John McCall llvm::GlobalVariable *Addr); 2068efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2069558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); 207034999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 207134999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, 2072830937bc1100fba7682f7c32c40512085870f50cFariborz Jahanian const Expr *Exp); 20731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20744765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall RValue EmitExprWithCleanups(const ExprWithCleanups *E, 20754765fa05b5652fcc4356371c2f481d0ea9a1b007John McCall AggValueSlot Slot =AggValueSlot::ignored()); 20761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2077756b5c4f9d52642d87d1948bee58f97a4f795b24Anders Carlsson void EmitCXXThrowExpr(const CXXThrowExpr *E); 20781eb2e59338c4b9c0429fc39ca98662adc9e7a3f2Douglas Gregor 20790ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 20800ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar // Internal Helpers 20810ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 20820dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20830946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// ContainsLabel - Return true if the statement contains a label in it. If 20840946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// this statement is not executed normally, it not containing a label means 20850946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// that we can just remove the code. 20860946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); 20870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2088ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// containsBreak - Return true if the statement contains a break out of it. 2089ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// If the statement (recursively) contains a switch or loop with a break 2090ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// inside of it, this is fine. 2091ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner static bool containsBreak(const Stmt *S); 2092ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 20934bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2094c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2095c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// constant folds return true and set the boolean result in Result. 2096c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); 20970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2098ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2099ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2100ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// constant folds return true and set the folded value. 2101ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APInt &Result); 2102ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 210331a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an 210431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// if statement) to the specified blocks. Based on the condition, this might 210531a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// try to simplify the codegen of the conditional based on the branch. 21069bc47e29dce8f095be7a6d07dbb02a5a7a112949Chris Lattner void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, 21074bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar llvm::BasicBlock *FalseBlock); 2108be07f60131bc6f8d6696f4644df1ef667a1730d5Mike Stump 210915037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// getTrapBB - Create a basic block that will call the trap intrinsic. We'll 211015037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// generate a branch around the created basic block as necessary. 21116c552c1d5f47fbba00e6268d96a26ad026f2da2aChris Lattner llvm::BasicBlock *getTrapBB(); 21129cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 211321c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson /// EmitCallArg - Emit a single call argument. 2114413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); 211521c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson 21162736071ea3a46f90e65c93418961611d96c10ab9John McCall /// EmitDelegateCallArg - We are performing a delegate call; that 21172736071ea3a46f90e65c93418961611d96c10ab9John McCall /// is, the current function is delegating to another one. Produce 21182736071ea3a46f90e65c93418961611d96c10ab9John McCall /// a r-value suitable for passing the given parameter. 2119413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); 21202736071ea3a46f90e65c93418961611d96c10ab9John McCall 212131a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattnerprivate: 212229e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar void EmitReturnOfRValue(RValue RV, QualType Ty); 212329e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 21245627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty 21255627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// from function arguments into \arg Dst. See ABIArgInfo::Expand. 21265627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// 21275627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \param AI - The first function argument of the expansion. 21285627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \return The argument following the last expanded function 21295627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// argument. 21300dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump llvm::Function::arg_iterator 21315627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeFromArgs(QualType Ty, LValue Dst, 21325627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator AI); 21335627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 21340dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg 21350dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// Ty, into individual arguments on the provided vector \arg Args. See 21360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ABIArgInfo::Expand. 21370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void ExpandTypeToArgs(QualType Ty, RValue Src, 21385627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::SmallVector<llvm::Value*, 16> &Args); 2139c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson 21401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value* EmitAsmInput(const AsmStmt &S, 2141b84e8a670ad1d00c0a34295c42ac700cdde04815Daniel Dunbar const TargetInfo::ConstraintInfo &Info, 2142c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson const Expr *InputExpr, std::string &ConstraintStr); 21430dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21446d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman llvm::Value* EmitAsmInputLValue(const AsmStmt &S, 21456d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman const TargetInfo::ConstraintInfo &Info, 21466d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman LValue InputValue, QualType InputType, 21476d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman std::string &ConstraintStr); 21486d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman 21490139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson /// EmitCallArgs - Emit call arguments for a function. 21501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// The CallArgTypeInfo parameter is used for iterating over the known 2151af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson /// argument types of the function being called. 2152af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson template<typename T> 2153af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, 21540139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 2155af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator ArgEnd) { 2156af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator Arg = ArgBeg; 2157af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson 2158af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // First, use the argument types that the type info knows about 2159af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson if (CallArgTypeInfo) { 2160af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), 2161af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { 216244b0a3e858af7b19f489619e52cd58970611cd15Eli Friedman assert(Arg != ArgEnd && "Running over edge of argument list!"); 2163af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson QualType ArgType = *I; 2164745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#ifndef NDEBUG 2165745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ActualArgType = Arg->getType(); 2166745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgType->isPointerType() && ActualArgType->isPointerType()) { 21679cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ActualBaseType = 2168745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType->getAs<PointerType>()->getPointeeType(); 21699cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ArgBaseType = 2170745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ArgType->getAs<PointerType>()->getPointeeType(); 2171745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgBaseType->isVariableArrayType()) { 2172745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (const VariableArrayType *VAT = 2173745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getAsVariableArrayType(ActualBaseType)) { 2174745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (!VAT->getSizeExpr()) 2175745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType = ArgType; 2176745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2177745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2178745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2179af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). 21801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump getTypePtr() == 2181745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getCanonicalType(ActualArgType).getTypePtr() && 2182af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "type mismatch in call argument!"); 2183745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#endif 2184413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, ArgType); 2185af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 21861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Either we've emitted all the call args, or we have a call to a 2188af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // variadic function. 21891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && 2190af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "Extra arguments in non-variadic function!"); 21911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2192af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 21931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2194af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // If we still have any arguments, emit them using the type of the argument. 2195413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall for (; Arg != ArgEnd; ++Arg) 2196413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, Arg->getType()); 2197af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 2198492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall 2199492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall const TargetCodeGenInfo &getTargetHooks() const { 2200492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall return CGM.getTargetCodeGenInfo(); 2201492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall } 2202744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2203744016dde06fcffd50931e94a98c850f8b12cd87John McCall void EmitDeclMetadata(); 2204f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall 2205f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall CodeGenModule::ByrefHelpers * 2206f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall buildByrefHelpers(const llvm::StructType &byrefType, 2207f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall const AutoVarEmission &emission); 22085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 22091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2210150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// Helper class with most of the code for saving a value for a 2211150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// conditional expression cleanup. 2212804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingLLVMValue { 2213150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; 2214150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2215150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Answer whether the given value needs extra work to be saved. 2216150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(llvm::Value *value) { 2217150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's not an instruction, we don't need to save. 2218150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!isa<llvm::Instruction>(value)) return false; 2219150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2220150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's an instruction in the entry block, we don't need to save. 2221150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); 2222150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return (block != &block->getParent()->getEntryBlock()); 2223150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2224150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2225150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Try to save the given value. 2226150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { 2227150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!needsSaving(value)) return saved_type(value, false); 2228150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2229150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // Otherwise we need an alloca. 2230150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::Value *alloca = 2231150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); 2232150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.Builder.CreateStore(value, alloca); 2233150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2234150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return saved_type(alloca, true); 2235150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2236150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2237150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { 2238150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!value.getInt()) return value.getPointer(); 2239150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return CGF.Builder.CreateLoad(value.getPointer()); 2240150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2241150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2242150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2243804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A partial specialization of DominatingValue for llvm::Values that 2244804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// might be llvm::Instructions. 2245804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { 2246804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef T *type; 2247804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2248804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); 2249804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2250804b807ea918184d6de63bd745e1ff75a9bfc679John McCall}; 2251804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2252804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A specialization of DominatingValue for RValue. 2253804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <> struct DominatingValue<RValue> { 2254804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef RValue type; 2255804b807ea918184d6de63bd745e1ff75a9bfc679John McCall class saved_type { 2256804b807ea918184d6de63bd745e1ff75a9bfc679John McCall enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, 2257804b807ea918184d6de63bd745e1ff75a9bfc679John McCall AggregateAddress, ComplexAddress }; 2258804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2259804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::Value *Value; 2260804b807ea918184d6de63bd745e1ff75a9bfc679John McCall Kind K; 2261804b807ea918184d6de63bd745e1ff75a9bfc679John McCall saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} 2262804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2263804b807ea918184d6de63bd745e1ff75a9bfc679John McCall public: 2264804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(RValue value); 2265804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, RValue value); 2266804b807ea918184d6de63bd745e1ff75a9bfc679John McCall RValue restore(CodeGenFunction &CGF); 2267804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2268804b807ea918184d6de63bd745e1ff75a9bfc679John McCall // implementations in CGExprCXX.cpp 2269804b807ea918184d6de63bd745e1ff75a9bfc679John McCall }; 2270804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2271804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(type value) { 2272804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::needsSaving(value); 2273804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2274804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, type value) { 2275804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::save(CGF, value); 2276804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2277150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2278804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return value.restore(CGF); 2279150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2280150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2281150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 22825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace CodeGen 22835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 22845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 22855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 2286