CodeGenFunction.h revision b6bbcc9995186799a60ce17d0c1acff31601653a
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" 21481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "clang/Basic/TargetInfo.h" 22481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/DenseMap.h" 23481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/SmallVector.h" 24481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/Support/ValueHandle.h" 2569243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson#include "CodeGenModule.h" 2696bd13ae1ab89f5a04b3ad3ec8ec1864cbba3482Mike Stump#include "CGBlocks.h" 2745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar#include "CGBuilder.h" 280dbe227feccf6a8dbadfff8ca3f80416b7bf2f28Daniel Dunbar#include "CGCall.h" 29b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson#include "CGCXX.h" 308f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CGValue.h" 318f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace llvm { 33c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class BasicBlock; 34f21efe9088a0b3eda1209d1706529f6cb2073092Benjamin Kramer class LLVMContext; 35dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall class MDNode; 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Module; 37898d508d4c9e9d45914952473e39196b20830a9fDaniel Dunbar class SwitchInst; 38259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar class Twine; 39ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar class Value; 40f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class CallSite; 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 448d308384a220c7dc81755c47cdcbdd87dac25d5bDevang Patel class APValue; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class ASTContext; 467267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson class CXXDestructorDecl; 476815e941998659a55c20c147861b0f437928c3d8Anders Carlsson class CXXTryStmt; 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Decl; 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; 740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 75f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A branch fixup. These are required when emitting a goto to a 76f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// label which hasn't been emitted yet. The goto is optimistically 77f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// emitted as a branch to the basic block for the label, and (if it 78f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// occurs in a scope with non-trivial cleanups) a fixup is added to 79f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// the innermost cleanup. When a (normal) cleanup is popped, any 80f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// unresolved fixups in that scope are threaded through the cleanup. 81f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallstruct BranchFixup { 82ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The block containing the terminator which needs to be modified 83ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// into a switch if this fixup is resolved into the current scope. 84ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// If null, LatestBranch points directly to the destination. 85ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *OptimisticBranchBlock; 86f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 87ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The ultimate destination of the branch. 88f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 89f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// This can be set to null to indicate that this fixup was 90f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// successfully resolved. 91f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Destination; 92f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 93ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The destination index value. 94ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned DestinationIndex; 95ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 96ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The initial branch of the fixup. 97ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BranchInst *InitialBranch; 98f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 99f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 100cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCallenum CleanupKind { 101cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall EHCleanup = 0x1, 102cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalCleanup = 0x2, 103cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalAndEHCleanup = EHCleanup | NormalCleanup, 104cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 105cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveCleanup = 0x4, 106cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveEHCleanup = EHCleanup | InactiveCleanup, 107cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalCleanup = NormalCleanup | InactiveCleanup, 108cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup 109cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall}; 110da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 111f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A stack of scopes which respond to exceptions, including cleanups 112f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// and catch blocks. 113f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallclass EHScopeStack { 114f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 115f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A saved depth on the scope stack. This is necessary because 116f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushing scopes onto the stack invalidates iterators. 117f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class stable_iterator { 118f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend class EHScopeStack; 119f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 120f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Offset from StartOfData to EndOfBuffer. 121f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ptrdiff_t Size; 122f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 123f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator(ptrdiff_t Size) : Size(Size) {} 124f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 125f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall public: 126f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator invalid() { return stable_iterator(-1); } 127f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator() : Size(-1) {} 128f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 129f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool isValid() const { return Size >= 0; } 130f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 131838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope encloses I. 132838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false if I is invalid. 133838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 134ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool encloses(stable_iterator I) const { return Size <= I.Size; } 135838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall 136838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope strictly encloses I: that is, 137838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// if it encloses I and is not I. 138838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false is I is invalid. 139838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 140ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } 1411bda662cb37d9fe24be4b3cf8ea0f4e550e1f889John McCall 142f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator==(stable_iterator A, stable_iterator B) { 143f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size == B.Size; 144f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 145f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator!=(stable_iterator A, stable_iterator B) { 146f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size != B.Size; 147f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 148f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 149f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1501f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Information for lazily generating a cleanup. Subclasses must be 1511f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// POD-like: cleanups will not be destructed, and they will be 1521f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// allocated on the cleanup stack and freely copied and moved 1531f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// around. 154da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 1551f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Cleanup implementations should generally be declared in an 156da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// anonymous namespace. 1571f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall class Cleanup { 158da65ea86482bc116906edfb9ba1d7124f76cc867John McCall public: 1593e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // Anchor the construction vtable. We use the destructor because 1603e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // gcc gives an obnoxious warning if there are virtual methods 1613e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // with an accessible non-virtual destructor. Unfortunately, 1623e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // declaring this destructor makes it non-trivial, but there 1633e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // doesn't seem to be any other way around this warning. 1643e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // 1653e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall // This destructor will never be called. 1661f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall virtual ~Cleanup(); 1673e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall 168da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Emit the cleanup. For normal cleanups, this is run in the 169da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// same EH context as when the cleanup was pushed, i.e. the 170da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// immediately-enclosing context of the cleanup scope. For 171da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// EH cleanups, this is run in a terminate context. 172da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 173da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // \param IsForEHCleanup true if this is for an EH cleanup, false 174da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// if for a normal cleanup. 175da65ea86482bc116906edfb9ba1d7124f76cc867John McCall virtual void Emit(CodeGenFunction &CGF, bool IsForEHCleanup) = 0; 176da65ea86482bc116906edfb9ba1d7124f76cc867John McCall }; 177da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 178f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallprivate: 179f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // The implementation for this class is in CGException.h and 180f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // CGException.cpp; the definition is here because it's used as a 181f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // member of CodeGenFunction. 182f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 183f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The start of the scope-stack buffer, i.e. the allocated pointer 184f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// for the buffer. All of these pointers are either simultaneously 185f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// null or simultaneously valid. 186f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfBuffer; 187f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 188f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The end of the buffer. 189f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *EndOfBuffer; 190f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 191f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The first valid entry in the buffer. 192f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfData; 193f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 194f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost normal cleanup on the stack. 195f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostNormalCleanup; 196f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 197f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost EH cleanup on the stack. 198f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostEHCleanup; 199f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 200f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The number of catches on the stack. 201f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned CatchDepth; 202f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 203ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The current EH destination index. Reset to FirstCatchIndex 204ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// whenever the last EH cleanup is popped. 205ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextEHDestIndex; 206ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall enum { FirstEHDestIndex = 1 }; 207ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 208f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The current set of branch fixups. A branch fixup is a jump to 209f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// an as-yet unemitted label, i.e. a label for which we don't yet 210f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// know the EH stack depth. Whenever we pop a cleanup, we have 211f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to thread all the current branch fixups through it. 212f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 213f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Fixups are recorded as the Use of the respective branch or 214f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// switch statement. The use points to the final destination. 215f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// When popping out of a cleanup, these uses are threaded through 216f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup and adjusted to point to the new cleanup. 217f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 218f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Note that branches are allowed to jump into protected scopes 219f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// in certain situations; e.g. the following code is legal: 220f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// struct A { ~A(); }; // trivial ctor, non-trivial dtor 221f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// goto foo; 222f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A a; 223f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// foo: 224f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// bar(); 225f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<BranchFixup, 8> BranchFixups; 226f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 227f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *allocate(size_t Size); 228f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 2291f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *pushCleanup(CleanupKind K, size_t DataSize); 230da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 231f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 232f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), 233f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostNormalCleanup(stable_end()), 234f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostEHCleanup(stable_end()), 235ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall CatchDepth(0), NextEHDestIndex(FirstEHDestIndex) {} 236f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~EHScopeStack() { delete[] StartOfBuffer; } 237f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 238da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // Variadic templates would make this not terrible. 239da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 240da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 2418e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T> 2421f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind) { 2431f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 2441f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(); 2458e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 2468e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 2478e3f86193995c47ee0d229e4336c3382410f09f5John McCall 2488e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 2498e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T, class A0> 2501f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0) { 2511f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 2521f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0); 2538e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 2548e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 2558e3f86193995c47ee0d229e4336c3382410f09f5John McCall 2568e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 257da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1> 2581f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { 2591f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 2601f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1); 261da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 262da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 263da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 264da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 265da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2> 2661f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { 2671f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 2681f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2); 269da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 270da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 271da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 272da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 273da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2, class A3> 2741f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { 2751f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 2761f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); 277da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 278da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 279da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 28077199713ab56f87ffad9a535ff2a0877704eed87John McCall /// Push a lazily-created cleanup on the stack. 28177199713ab56f87ffad9a535ff2a0877704eed87John McCall template <class T, class A0, class A1, class A2, class A3, class A4> 2821f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { 2831f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 2841f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); 28577199713ab56f87ffad9a535ff2a0877704eed87John McCall (void) Obj; 28677199713ab56f87ffad9a535ff2a0877704eed87John McCall } 28777199713ab56f87ffad9a535ff2a0877704eed87John McCall 2887d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall // Feel free to add more variants of the following: 2897d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 2907d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Push a cleanup with non-constant storage requirements on the 2917d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. The cleanup type must provide an additional static method: 2927d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// static size_t getExtraSize(size_t); 2937d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The argument to this method will be the value N, which will also 2947d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// be passed as the first argument to the constructor. 2957d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 2967d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The data stored in the extra storage must obey the same 2977d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// restrictions as normal cleanup member data. 2987d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 2997d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The pointer returned from this method is valid until the cleanup 3007d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack is modified. 3017d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall template <class T, class A0, class A1, class A2> 3027d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { 3037d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); 3047d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall return new (Buffer) T(N, a0, a1, a2); 3057d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall } 3067d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 307f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a cleanup scope off the stack. This should only be called 308f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// by CodeGenFunction::PopCleanupBlock. 309f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCleanup(); 310f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 311f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a set of catch handlers on the stack. The catch is 312f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// uninitialized and will need to have the given number of handlers 313f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// set on it. 314f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHCatchScope *pushCatch(unsigned NumHandlers); 315f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 316f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a catch scope off the stack. 317f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCatch(); 318f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 319f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push an exceptions filter on the stack. 320f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHFilterScope *pushFilter(unsigned NumFilters); 321f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 322f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops an exceptions filter off the stack. 323f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popFilter(); 324f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 325f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a terminate handler on the stack. 326f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void pushTerminate(); 327f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 328f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a terminate handler off the stack. 329f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popTerminate(); 330f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 331f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether the exception-scopes stack is empty. 332f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool empty() const { return StartOfData == EndOfBuffer; } 333f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 334f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool requiresLandingPad() const { 335f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return (CatchDepth || hasEHCleanups()); 336f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 337f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 338f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any normal cleanups on the stack. 339f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasNormalCleanups() const { 340f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup != stable_end(); 341f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 342f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 343f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost normal cleanup on the stack, or 344f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stable_end() if there are no normal cleanups. 345f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostNormalCleanup() const { 346f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup; 347f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 348838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall stable_iterator getInnermostActiveNormalCleanup() const; // CGException.h 349f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 350f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any EH cleanups on the stack. 351f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasEHCleanups() const { 352f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostEHCleanup != stable_end(); 353f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 354f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 355f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost EH cleanup on the stack, or stable_end() 356f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// if there are no EH cleanups. 357f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostEHCleanup() const { 358f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostEHCleanup; 359f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 360838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall stable_iterator getInnermostActiveEHCleanup() const; // CGException.h 361f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 362f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// An unstable reference to a scope-stack depth. Invalidated by 363f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushes but not pops. 364f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class iterator; 365f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 366f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the innermost EH scope. 367f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator begin() const; 368f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 369f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the outermost EH scope. 370f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator end() const; 371f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 372f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the top of the EH stack. The 373f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// returned reference is valid until that scope is popped off the 374f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stack. 375f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stable_begin() const { 376f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(EndOfBuffer - StartOfData); 377f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 378f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 379f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the bottom of the EH stack. 380f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator stable_end() { 381f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(0); 382f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 383f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 384f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Translates an iterator into a stable_iterator. 385f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stabilize(iterator it) const; 386f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 387f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Finds the nearest cleanup enclosing the given iterator. 388f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns stable_iterator::invalid() if there are no such cleanups. 389f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getEnclosingEHCleanup(iterator it) const; 390f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 391f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Turn a stable reference to a scope depth into a unstable pointer 392f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to the EH stack. 393f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator find(stable_iterator save) const; 394f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 395f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Removes the cleanup pointed to by the given stable_iterator. 396f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void removeCleanup(stable_iterator save); 397f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 398f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Add a branch fixup to the current cleanup scope. 399f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &addBranchFixup() { 400f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); 401f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixups.push_back(BranchFixup()); 402f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups.back(); 403f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 404f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 405f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned getNumBranchFixups() const { return BranchFixups.size(); } 406f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &getBranchFixup(unsigned I) { 407f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(I < getNumBranchFixups()); 408f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups[I]; 409f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 410f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 411ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Pops lazily-removed fixups from the end of the list. This 412ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// should only be called by procedures which have just popped a 413ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// cleanup or resolved one or more fixups. 414ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void popNullFixups(); 415ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 416ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Clears the branch-fixups list. This should only be called by 4178abdbd8118e37e759d1ce3f5814ee0a24b1589e8John McCall /// ResolveAllBranchFixups. 418ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void clearFixups() { BranchFixups.clear(); } 419ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 420ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Gets the next EH destination index. 421ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getNextEHDestIndex() { return NextEHDestIndex++; } 422f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 423f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 4245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CodeGenFunction - This class organizes the per-function state that is used 4255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// while generating LLVM code. 4262a998148a6823c44d67da347c95eb2ea21f6b986Mike Stumpclass CodeGenFunction : public BlockFunction { 4278a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT 4288a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT 4294c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 4304c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall friend class CGCXXABI; 431bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattnerpublic: 432ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// A jump destination is an abstract label, branching to which may 433ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// require a jump out through normal cleanups. 434f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct JumpDest { 435ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest() : Block(0), ScopeDepth(), Index(0) {} 436ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest(llvm::BasicBlock *Block, 437ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 438ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 439ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 440ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 441ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 442ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 443ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 444ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 445f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 446ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 447f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Block; 448f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator ScopeDepth; 449ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 450ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall }; 451ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 452ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// An unwind destination is an abstract label, branching to which 453ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// may require a jump out through EH cleanups. 454ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall struct UnwindDest { 455ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest() : Block(0), ScopeDepth(), Index(0) {} 456ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest(llvm::BasicBlock *Block, 457ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 458ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 459ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 460ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 461ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 462ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 463ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 464ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 465ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 466ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 467ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *Block; 468ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator ScopeDepth; 469ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 470f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 471f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 4725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenModule &CGM; // Per-module state. 473444be7366d0a1e172c0290a1ea54c1cb16b5947cDaniel Dunbar const TargetInfo &Target; 4740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 47558dee10ed2eee34035f62d1c2d32b3639e9182f8Chris Lattner typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; 47645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 4770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 478b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurFuncDecl - Holds the Decl for the current function or ObjC method. 479b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// This excludes BlockDecls. 4804111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner const Decl *CurFuncDecl; 481b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurCodeDecl - This is the inner-most code context, which includes blocks. 482b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner const Decl *CurCodeDecl; 48388b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar const CGFunctionInfo *CurFnInfo; 484391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner QualType FnRetTy; 4855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Function *CurFn; 4865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4876a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump /// CurGD - The GlobalDecl for the current function being compiled. 4886a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump GlobalDecl CurGD; 4896a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump 4905ca2084cf9b529563209429857f01fdae9dcdfa5Daniel Dunbar /// ReturnBlock - Unified return block. 491f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ReturnBlock; 492f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 4930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ReturnValue - The temporary alloca to hold the return value. This is null 4940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// iff the function has no return value. 495b17daf9ab790ae71aacad2cc4aa11cd8d86c25d1Eli Friedman llvm::Value *ReturnValue; 4960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 497ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// RethrowBlock - Unified rethrow block. 498ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest RethrowBlock; 499ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 5005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AllocaInsertPoint - This is an instruction in the entry block before which 5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// we prefer to insert allocas. 502481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; 5030ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 50477b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner // intptr_t, i32, i64 50577b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner const llvm::IntegerType *IntPtrTy, *Int32Ty, *Int64Ty; 5067b66000bdfc2684351fb03208e672f23012ed569Hartmut Kaiser uint32_t LLVMPointerWidth; 50718ccc7776ad6288c5f630dc7967fb99d099c9cd9Daniel Dunbar 508d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump bool Exceptions; 5099c276ae0f24d4cee8f7954069d4b8eae45d0447dMike Stump bool CatchUndefined; 5103d91bbcdab155181556969cad6ec97014405acedDouglas Gregor 5113d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// \brief A mapping from NRVO variables to the flags used to indicate 5123d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// when the NRVO has been applied to this variable. 5133d91bbcdab155181556969cad6ec97014405acedDouglas Gregor llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; 514af9b96828f9126d993c3e155b8453be62013b735Fariborz Jahanian 515af9b96828f9126d993c3e155b8453be62013b735Fariborz Jahanian /// \brief A mapping from 'Save' expression in a conditional expression 516af9b96828f9126d993c3e155b8453be62013b735Fariborz Jahanian /// to the IR for this expression. Used to implement IR gen. for Gnu 517af9b96828f9126d993c3e155b8453be62013b735Fariborz Jahanian /// extension's missing LHS expression in a conditional operator expression. 518af9b96828f9126d993c3e155b8453be62013b735Fariborz Jahanian llvm::DenseMap<const Expr *, llvm::Value *> ConditionalSaveExprs; 519aa3b57ee9e36a805371e2a543383225cdd2a5d83Fariborz Jahanian llvm::DenseMap<const Expr *, ComplexPairTy> ConditionalSaveComplexExprs; 5200b78710636671eeb2c5c4dedffa4ad1d58fa4bb8Fariborz Jahanian llvm::DenseMap<const Expr *, LValue> ConditionalSaveLValueExprs; 5210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 522f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack EHStack; 5230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 524ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// i32s containing the indexes of the cleanup destinations. 525ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *NormalCleanupDest; 526ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *EHCleanupDest; 527ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 528ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextCleanupDestIndex; 529ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 530f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The exception slot. All landing pads write the current 531f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// exception pointer into this alloca. 532f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *ExceptionSlot; 5330dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 534f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Emits a landing pad for the current EH stack. 535f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *EmitLandingPad(); 5360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 537f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDestImpl(); 53899533834ba8f3658559f334e68a518ebb6388ceaMike Stump 539f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 540f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// ObjCEHValueStack - Stack of Objective-C exception values, used for 541f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// rethrows. 542f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::SmallVector<llvm::Value*, 8> ObjCEHValueStack; 543bb66f9f2e454135b86462d121629275b6ac38e96Anders Carlsson 544f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // A struct holding information about a finally block's IR 545f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // generation. For now, doesn't actually hold anything. 546f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct FinallyInfo { 547d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump }; 548d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump 549f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall FinallyInfo EnterFinallyBlock(const Stmt *Stmt, 550f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *BeginCatchFn, 551f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *EndCatchFn, 552f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Constant *RethrowFn); 553f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void ExitFinallyBlock(FinallyInfo &FinallyInfo); 554f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 555f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 556f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// complete-object destructor of an object of the given type at the 557f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// given address. Does nothing if T is not a C++ class type with a 558f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// non-trivial destructor. 559f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PushDestructorCleanup(QualType T, llvm::Value *Addr); 560f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 56181407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 56281407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// complete-object variant of the given destructor on the object at 56381407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// the given address. 56481407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall void PushDestructorCleanup(const CXXDestructorDecl *Dtor, 56581407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall llvm::Value *Addr); 56681407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall 567f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlock - Will pop the cleanup entry on the stack and 568f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// process all branch fixups. 569ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void PopCleanupBlock(bool FallThroughIsBranchThrough = false); 570f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5717d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// DeactivateCleanupBlock - Deactivates the given cleanup block. 5727d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The block cannot be reactivated. Pops it if it's the top of the 5737d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. 5747d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 5757d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 5767d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// ActivateCleanupBlock - Activates an initially-inactive cleanup. 5777d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Cannot be used to resurrect a deactivated cleanup. 5787d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup); 579cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 580f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// \brief Enters a new scope for capturing cleanups, all of which 581f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// will be executed once the scope is exited. 582f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class RunCleanupsScope { 58301234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CodeGenFunction& CGF; 584f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator CleanupStackDepth; 58501234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor bool OldDidCallStackSave; 5865656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool PerformCleanup; 58701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 588f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope(const RunCleanupsScope &); // DO NOT IMPLEMENT 589f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope &operator=(const RunCleanupsScope &); // DO NOT IMPLEMENT 59001234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 59101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor public: 59201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Enter a new cleanup scope. 593f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall explicit RunCleanupsScope(CodeGenFunction &CGF) 5945656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor : CGF(CGF), PerformCleanup(true) 5955656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor { 596f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CleanupStackDepth = CGF.EHStack.stable_begin(); 59701234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor OldDidCallStackSave = CGF.DidCallStackSave; 5984ada2ca7d82dab68d3646f3eb6dcdfee072e8ea4Argyrios Kyrtzidis CGF.DidCallStackSave = false; 59901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 60001234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 60101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Exit this cleanup scope, emitting any accumulated 60201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// cleanups. 603f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~RunCleanupsScope() { 6045656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor if (PerformCleanup) { 6055656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 606f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 6075656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 6085656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 6095656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 6105656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Determine whether this scope requires any cleanups. 6115656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool requiresCleanups() const { 612f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return CGF.EHStack.stable_begin() != CleanupStackDepth; 6135656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 6145656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 6155656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Force the emission of cleanups now, instead of waiting 6165656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// until this object is destroyed. 6175656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor void ForceCleanup() { 6185656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor assert(PerformCleanup && "Already forced cleanup"); 61901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 620f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 6215656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor PerformCleanup = false; 62201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 62301234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor }; 62401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 62544ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 626f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlocks - Takes the old cleanup stack size and emits 627f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup blocks that have been added. 628f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); 62944ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 630ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void ResolveBranchFixups(llvm::BasicBlock *Target); 631ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 632f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 633f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 634f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 635ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { 636413e67778d593215d2f2161a4e712c8568f1ddd0John McCall return JumpDest(Target, 637413e67778d593215d2f2161a4e712c8568f1ddd0John McCall EHStack.getInnermostNormalCleanup(), 638413e67778d593215d2f2161a4e712c8568f1ddd0John McCall NextCleanupDestIndex++); 639f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 640c71c845fe77ee1f891d60232ec320912d88557eeAnders Carlsson 641f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 642f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 643f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 644f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest getJumpDestInCurrentScope(const char *Name = 0) { 645ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall return getJumpDestInCurrentScope(createBasicBlock(Name)); 646f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 647f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 648f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughCleanup - Emit a branch from the current insert 649f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// block through the normal cleanup handling code (if any) and then 650f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// on to \arg Dest. 651f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitBranchThroughCleanup(JumpDest Dest); 652f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 653f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughEHCleanup - Emit a branch from the current 654f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// insert block through the EH cleanup handling code (if any) and 655f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// then on to \arg Dest. 656ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void EmitBranchThroughEHCleanup(UnwindDest Dest); 657ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 658ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// getRethrowDest - Returns the unified outermost-scope rethrow 659ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// destination. 660ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall UnwindDest getRethrowDest(); 6610dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 66272119a887c4af39c90f10b6bdc158389071f42eaAnders Carlsson /// BeginConditionalBranch - Should be called before a conditional part of an 663a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// expression is emitted. For example, before the RHS of the expression below 664a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// is emitted: 6651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 6661d8475067d5b62ed5a57ba93862e23f3096a8bddAnders Carlsson /// b && f(T()); 6671d8475067d5b62ed5a57ba93862e23f3096a8bddAnders Carlsson /// 668a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// This is used to make sure that any temporaries created in the conditional 6691d8475067d5b62ed5a57ba93862e23f3096a8bddAnders Carlsson /// branch are only destroyed if the branch is taken. 67072119a887c4af39c90f10b6bdc158389071f42eaAnders Carlsson void BeginConditionalBranch() { 671a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson ++ConditionalBranchLevel; 672a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson } 6731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 67472119a887c4af39c90f10b6bdc158389071f42eaAnders Carlsson /// EndConditionalBranch - Should be called after a conditional part of an 675a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// expression has been emitted. 67672119a887c4af39c90f10b6bdc158389071f42eaAnders Carlsson void EndConditionalBranch() { 67708e9e453f40aff95a59bd67db49b8f050765e1f0Anders Carlsson assert(ConditionalBranchLevel != 0 && 67808e9e453f40aff95a59bd67db49b8f050765e1f0Anders Carlsson "Conditional branch mismatch!"); 67908e9e453f40aff95a59bd67db49b8f050765e1f0Anders Carlsson 680a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson --ConditionalBranchLevel; 681a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson } 6821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6833019c444c672938c57f5573840071ecd73425ee7John McCall /// isInConditionalBranch - Return true if we're currently emitting 6843019c444c672938c57f5573840071ecd73425ee7John McCall /// one branch or the other of a conditional expression. 6853019c444c672938c57f5573840071ecd73425ee7John McCall bool isInConditionalBranch() const { return ConditionalBranchLevel != 0; } 6863019c444c672938c57f5573840071ecd73425ee7John McCall 6877f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerprivate: 688d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner CGDebugInfo *DebugInfo; 68909429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 690f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// IndirectBranch - The first time an indirect goto is seen we create a block 691f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// with an indirect branch. Every time we see the address of a label taken, 692f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// we add the label to the indirect goto. Every subsequent indirect goto is 693f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// codegen'd as a jump to the IndirectBranch's basic block. 694d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner llvm::IndirectBrInst *IndirectBranch; 6950ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 6960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C 6970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// decls. 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::DenseMap<const Decl*, llvm::Value*> LocalDeclMap; 6995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LabelMap - This keeps track of the LLVM basic block for each C label. 701f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::DenseMap<const LabelStmt*, JumpDest> LabelMap; 7020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 7030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // BreakContinueStack - This keeps track of where break and continue 704e4b6d342c29d5cb9d311756100df1603810fa892Anders Carlsson // statements should jump to. 705da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner struct BreakContinue { 706f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BreakContinue(JumpDest Break, JumpDest Continue) 707f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall : BreakBlock(Break), ContinueBlock(Continue) {} 7080dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 709f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest BreakBlock; 710f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ContinueBlock; 7110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump }; 712da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner llvm::SmallVector<BreakContinue, 8> BreakContinueStack; 71318ccc7776ad6288c5f630dc7967fb99d099c9cd9Daniel Dunbar 7140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// SwitchInsn - This is nearest current switch instruction. It is null if if 7150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// current context is not in a switch. 71651b09f2c528c8460b5465c676173324e44176d62Devang Patel llvm::SwitchInst *SwitchInsn; 71751b09f2c528c8460b5465c676173324e44176d62Devang Patel 7180dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// CaseRangeBlock - This block holds if condition check for last case 71980fd5f96e6805ac43aab99faabd5b4c8b19551b7Devang Patel /// statement range in current switch instruction. 720c049e4f406a7f7179eba98659044a32508e53289Devang Patel llvm::BasicBlock *CaseRangeBlock; 721c049e4f406a7f7179eba98659044a32508e53289Devang Patel 7220dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // VLASizeMap - This keeps track of the associated size for each VLA type. 723bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // We track this by the size expression rather than the type itself because 724bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // in certain situations, like a const qualifier applied to an VLA typedef, 725bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // multiple VLA types can share the same size expression. 7260dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // FIXME: Maybe this could be a stack of maps that is pushed/popped as we 7270dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // enter/leave scopes. 728bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; 7290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 7304cc1a4703363ff940b6273aeef9d96a87edeb04bAnders Carlsson /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid 7314cc1a4703363ff940b6273aeef9d96a87edeb04bAnders Carlsson /// calling llvm.stacksave for multiple VLAs in the same scope. 7324cc1a4703363ff940b6273aeef9d96a87edeb04bAnders Carlsson bool DidCallStackSave; 73309429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 734f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A block containing a single 'unreachable' instruction. Created 735f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// lazily by getUnreachableBlock(). 736f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *UnreachableBlock; 7370dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 738f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXThisDecl - When generating code for a C++ member function, 739f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// this will hold the implicit 'this' declaration. 7402b77ba8bc7a842829ad9193816dc1d7d5e9c5be6Anders Carlsson ImplicitParamDecl *CXXThisDecl; 7412504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXThisValue; 7421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 743f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXVTTDecl - When generating code for a base object constructor or 744f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// base object destructor with virtual bases, this will hold the implicit 745f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// VTT parameter. 746f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson ImplicitParamDecl *CXXVTTDecl; 7472504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXVTTValue; 748f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson 749a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// ConditionalBranchLevel - Contains the nesting level of the current 750a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// conditional branch. This is used so that we know if a temporary should be 751a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson /// destroyed conditionally. 752a36bf8f74180e834c6bf2db867796fd5338495abAnders Carlsson unsigned ConditionalBranchLevel; 7531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7547dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson 7557dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM 7567dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// type as well as the field number that contains the actual data. 7577dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson llvm::DenseMap<const ValueDecl *, std::pair<const llvm::Type *, 7587dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson unsigned> > ByRefValueInfo; 7597dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson 7607dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field 7617dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// number that holds the value. 7627dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson unsigned getByRefValueLLVMField(const ValueDecl *VD) const; 763182f383db1782af752ecaf607fdff72a8542088bMike Stump 764f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *TerminateLandingPad; 765182f383db1782af752ecaf607fdff72a8542088bMike Stump llvm::BasicBlock *TerminateHandler; 76683252dcfe61aaebcb6bc117e71dc12968729513fChris Lattner llvm::BasicBlock *TrapBB; 767940670512d7c3d93389bb38a426abcb7ef44271eEli Friedman 7685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 7695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenFunction(CodeGenModule &cgm); 7700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 7711e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall CodeGenTypes &getTypes() const { return CGM.getTypes(); } 7725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASTContext &getContext() const; 773e896d98548b02223c7740d807a0aa6e20fba7079Anders Carlsson CGDebugInfo *getDebugInfo() { return DebugInfo; } 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 775f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns a pointer to the function's exception object slot, which 776f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// is assigned in every landing pad. 777f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *getExceptionSlot(); 778f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 779ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getNormalCleanupDestSlot(); 780ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getEHCleanupDestSlot(); 781ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 782f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getUnreachableBlock() { 783f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!UnreachableBlock) { 784f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall UnreachableBlock = createBasicBlock("unreachable"); 785f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); 786f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 787f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return UnreachableBlock; 788f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 789f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 790f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDest() { 791f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!EHStack.requiresLandingPad()) return 0; 792f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return getInvokeDestImpl(); 793f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 7949834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 795a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &getLLVMContext() { return VMContext; } 79669243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson 7979834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 7989834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar // Objective-C 7999834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 8009834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 801391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner void GenerateObjCMethod(const ObjCMethodDecl *OMD); 802af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 8030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void StartObjCMethod(const ObjCMethodDecl *MD, 804679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 805af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 8060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCGetter - Synthesize an Objective-C property getter function. 807fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCGetter(ObjCImplementationDecl *IMP, 808fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 809109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, 810109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *MD, bool ctor); 811af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 8120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCSetter - Synthesize an Objective-C property setter function 8130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// for the given property. 814fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCSetter(ObjCImplementationDecl *IMP, 815fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 8160b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian bool IndirectObjCSetterArg(const CGFunctionInfo &FI); 81715bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IvarTypeWithAggrGCObjects(QualType Ty); 818af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 8194e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 8204e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump // Block Bits 8214e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 8224e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 8238a2b4b1c5b960710db95e9b296d9a600aee37c00Mike Stump llvm::Value *BuildBlockLiteralTmp(const BlockExpr *); 8242a7eb28397148079cbc8e54e8a3871ef01c4f4bcBlaine Garst llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, 82589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const CGBlockInfo &Info, 8260892099dbc640720400a1d9decd2733a09d733e5Mike Stump const llvm::StructType *, 82744034db24bf59a53aa7699f4bbf59b939710bb3cFariborz Jahanian llvm::Constant *BlockVarLayout, 8280892099dbc640720400a1d9decd2733a09d733e5Mike Stump std::vector<HelperInfo> *); 8294e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 830564360be450b319aeafc26698be9811837bfb826Fariborz Jahanian llvm::Function *GenerateBlockFunction(GlobalDecl GD, 831564360be450b319aeafc26698be9811837bfb826Fariborz Jahanian const BlockExpr *BExpr, 832ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall CGBlockInfo &Info, 8336cc88f78fd36d3511b89412b193494b3e423cbffMike Stump const Decl *OuterFuncDecl, 83444034db24bf59a53aa7699f4bbf59b939710bb3cFariborz Jahanian llvm::Constant *& BlockVarLayout, 835ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall llvm::DenseMap<const Decl*, llvm::Value*> ldm); 8364e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 8374e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump llvm::Value *LoadBlockStruct(); 8384e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 839ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockCXXThisPointer(const CXXThisExpr *E); 840ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockDecl(const BlockDeclRefExpr *E); 841ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall llvm::Value *GetAddrOfBlockDecl(const BlockDeclRefExpr *E) { 842ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall return GetAddrOfBlockDecl(E->getDecl(), E->isByRef()); 843ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall } 844ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall llvm::Value *GetAddrOfBlockDecl(const ValueDecl *D, bool ByRef); 8459ad5513b0f9d3999705659fb1aeb0e6c53455f43Anders Carlsson const llvm::Type *BuildByRefType(const ValueDecl *D); 846dab514fc30242c7afd6c03956e46136c400fb0d3Mike Stump 8470ff8bafde95f6fa51ccea70738c1b99db870bddcAnders Carlsson void GenerateCode(GlobalDecl GD, llvm::Function *Fn); 8480ff8bafde95f6fa51ccea70738c1b99db870bddcAnders Carlsson void StartFunction(GlobalDecl GD, QualType RetTy, 8497c086516f3cc9fba2733b1919973206c6ba4b171Daniel Dunbar llvm::Function *Fn, 8502284ac9ec80299fcdefae9a2787cf85105a0f203Daniel Dunbar const FunctionArgList &Args, 8512284ac9ec80299fcdefae9a2787cf85105a0f203Daniel Dunbar SourceLocation StartLoc); 852a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 8539fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitConstructorBody(FunctionArgList &Args); 8549fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitDestructorBody(FunctionArgList &Args); 8559fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitFunctionBody(FunctionArgList &Args); 856a355e07454463b19829ac92ffd115a097faff0e0John McCall 8570dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitReturnBlock - Emit the unified return block, trying to avoid its 8580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emission when possible. 8591c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar void EmitReturnBlock(); 8601c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar 8610dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// FinishFunction - Complete IR generation of the current function. It is 8620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// legal to call this function even if there is no current insertion point. 863af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar void FinishFunction(SourceLocation EndLoc=SourceLocation()); 86417b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 865519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson /// GenerateThunk - Generate a thunk for the given method. 866519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson void GenerateThunk(llvm::Function *Fn, GlobalDecl GD, const ThunkInfo &Thunk); 867519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson 868fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, 869fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor FunctionArgList &Args); 8701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 871d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// InitializeVTablePointer - Initialize the vtable pointer of the given 872d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// subobject. 873d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// 874b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson void InitializeVTablePointer(BaseSubobject Base, 875b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 8764235840554aaed11efd479df9e622dc82ab77e6dAnders Carlsson uint64_t OffsetFromNearestVBase, 877d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson llvm::Constant *VTable, 878d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson const CXXRecordDecl *VTableClass); 879d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 880d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; 881b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson void InitializeVTablePointers(BaseSubobject Base, 882b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 8834235840554aaed11efd479df9e622dc82ab77e6dAnders Carlsson uint64_t OffsetFromNearestVBase, 884603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson bool BaseIsNonVirtualPrimaryBase, 885603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson llvm::Constant *VTable, 886603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson const CXXRecordDecl *VTableClass, 887603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson VisitedVirtualBasesSetTy& VBases); 88877a259c6dbf582949af8a243b472c0c7faa373a6Eli Friedman 889603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); 890d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 891d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 89250da2cadcc6da86abff6772de65280ace2cabc94John McCall /// EnterDtorCleanups - Enter the cleanups necessary to complete the 89350da2cadcc6da86abff6772de65280ace2cabc94John McCall /// given phase of destruction for a destructor. The end result 89450da2cadcc6da86abff6772de65280ace2cabc94John McCall /// should call destructors on members and base classes in reverse 89550da2cadcc6da86abff6772de65280ace2cabc94John McCall /// order of their construction. 89650da2cadcc6da86abff6772de65280ace2cabc94John McCall void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); 8971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8987255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// ShouldInstrumentFunction - Return true if the current function should be 8997255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumented with __cyg_profile_func_* calls 9007255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner bool ShouldInstrumentFunction(); 9017255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 9027255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// EmitFunctionInstrumentation - Emit LLVM code to call the specified 9037255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumentation function with the current function and the call site, if 9047255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// function instrumentation is enabled. 9057255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner void EmitFunctionInstrumentation(const char *Fn); 9067255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 9070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionProlog - Emit the target specific LLVM code to load the 9080dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// arguments for the given function. This is also responsible for naming the 9090dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM function arguments. 91088b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar void EmitFunctionProlog(const CGFunctionInfo &FI, 91188b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Function *Fn, 91217b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const FunctionArgList &Args); 91317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 9140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionEpilog - Emit the target specific LLVM code to return the 9150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// given temporary. 91635b21b884e5c3447a52a74d7ffaba966b07ac81fChris Lattner void EmitFunctionEpilog(const CGFunctionInfo &FI); 91717b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 918cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitStartEHSpec - Emit the start of the exception spec. 919cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitStartEHSpec(const Decl *D); 920cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 921cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitEndEHSpec - Emit the end of the exception spec. 922cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitEndEHSpec(const Decl *D); 923cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 924f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateLandingPad - Return a landing pad that just calls terminate. 925f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getTerminateLandingPad(); 926f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 927f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateHandler - Return a handler (not a landing pad, just 928f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a catch handler) that just calls terminate. This is used when 929f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a terminate scope encloses a try. 9309b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump llvm::BasicBlock *getTerminateHandler(); 9319b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump 9328b1a343b6b360d63d5dc8a6beb841ce4414c1e00Daniel Dunbar const llvm::Type *ConvertTypeForMem(QualType T); 9335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const llvm::Type *ConvertType(QualType T); 934bff225ecf77fb891596ecb1b27196310d268365eJohn McCall const llvm::Type *ConvertType(const TypeDecl *T) { 935bff225ecf77fb891596ecb1b27196310d268365eJohn McCall return ConvertType(getContext().getTypeDeclType(T)); 936bff225ecf77fb891596ecb1b27196310d268365eJohn McCall } 937c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner 9380dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LoadObjCSelf - Load the value of self. This function is only valid while 9390dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// generating code for an Objective-C method. 940c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner llvm::Value *LoadObjCSelf(); 9410dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 9420dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// TypeOfSelfObject - Return type of object that this self represents. 94345012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian QualType TypeOfSelfObject(); 9444111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 9455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// hasAggregateLLVMType - Return true if the specified AST type will map into 9465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an aggregate LLVM type or is void. 9475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool hasAggregateLLVMType(QualType T); 94855e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar 94955e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar /// createBasicBlock - Create an LLVM basic block. 9500dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump llvm::BasicBlock *createBasicBlock(const char *Name="", 95155e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar llvm::Function *Parent=0, 95255e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar llvm::BasicBlock *InsertBefore=0) { 95329ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#ifdef NDEBUG 9540032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::BasicBlock::Create(VMContext, "", Parent, InsertBefore); 95529ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#else 9560032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::BasicBlock::Create(VMContext, Name, Parent, InsertBefore); 95729ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#endif 95855e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar } 9590dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 9605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getBasicBlockForLabel - Return the LLVM basicblock that the specified 9615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// label maps to. 962f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest getJumpDestForLabel(const LabelStmt *S); 9630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 964f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// SimplifyForwardingBlocks - If the given basic block is only a branch to 965f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// another basic block, simplify it. This assumes that no other code could 966f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// potentially reference the basic block. 967aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar void SimplifyForwardingBlocks(llvm::BasicBlock *BB); 968aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar 9690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBlock - Emit the given block \arg BB and set it as the insert point, 9700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// adding a fall-through branch from the current insert block if 9710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessary. It is legal to call this function even if there is no current 9720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 973a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar /// 9740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// IsFinished - If true, indicates that the caller has finished emitting 9750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// branches to the given block and does not expect to emit code into it. This 9760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// means the block can be ignored if it is unreachable. 977a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); 978824e3bd76b2e32db2ec6e4d2d113413e518d1c63Daniel Dunbar 9790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBranch - Emit a branch to the specified basic block from the current 9800dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insert block, taking care to avoid creation of branches from dummy 9810dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// blocks. It is legal to call this function even if there is no current 9820dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 9835e08ad3cc62ab94649959ae227a9a411a729bf49Daniel Dunbar /// 9840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function clears the current insertion point. The caller should follow 9850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calls to this function with calls to Emit*Block prior to generation new 9860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// code. 987d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar void EmitBranch(llvm::BasicBlock *Block); 988d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar 9890dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// HaveInsertPoint - True if an insertion point is defined. If not, this 9900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// indicates that the current code being emitted is unreachable. 9910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump bool HaveInsertPoint() const { 992a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar return Builder.GetInsertBlock() != 0; 993a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 994a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 9950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint - Ensure that an insertion point is defined so that 9960dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emitted IR has a place to go. Note that by definition, if this function 9970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// creates a block then that block is unreachable; callers may do better to 9980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// detect when no insertion point is defined and simply skip IR generation. 999a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar void EnsureInsertPoint() { 1000a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar if (!HaveInsertPoint()) 1001a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar EmitBlock(createBasicBlock()); 1002a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 10030dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1004488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar /// ErrorUnsupported - Print out an error that codegen doesn't support the 1005dc5e8268292046114ffe02e48773572a91a310f1Chris Lattner /// specified stmt yet. 100690df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar void ErrorUnsupported(const Stmt *S, const char *Type, 100790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError=false); 10085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 10105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Helpers 10115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 10120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1013983e3d7dac99aed376939f1a4daadef98e09c3b9Daniel Dunbar LValue MakeAddrLValue(llvm::Value *V, QualType T, unsigned Alignment = 0) { 10143d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return LValue::MakeAddr(V, T, Alignment, getContext(), 10153d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman CGM.getTBAAInfo(T)); 10165cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar } 10175cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar 10185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CreateTempAlloca - This creates a alloca and inserts it into the entry 1019195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// block. The caller is responsible for setting an appropriate alignment on 1020195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// the alloca. 10215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::AllocaInst *CreateTempAlloca(const llvm::Type *Ty, 1022259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar const llvm::Twine &Name = "tmp"); 10230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1024ac418162692a951ca3796d6830496a85a2d12493John McCall /// InitTempAlloca - Provide an initial value for the given alloca. 1025ac418162692a951ca3796d6830496a85a2d12493John McCall void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); 1026ac418162692a951ca3796d6830496a85a2d12493John McCall 10279bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// CreateIRTemp - Create a temporary IR object of the given type, with 10289bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// appropriate alignment. This routine should only be used when an temporary 10299bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// value needs to be stored into an alloca (for example, to avoid explicit 10309bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// PHI construction), but the type is the IR type, not the type appropriate 10319bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// for storing in memory. 1032121b3facb4e0585d23766f9c1e4fdf9018a4b217Chris Lattner llvm::AllocaInst *CreateIRTemp(QualType T, const llvm::Twine &Name = "tmp"); 10339bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar 1034195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// CreateMemTemp - Create a temporary memory object of the given type, with 1035195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// appropriate alignment. 1036121b3facb4e0585d23766f9c1e4fdf9018a4b217Chris Lattner llvm::AllocaInst *CreateMemTemp(QualType T, const llvm::Twine &Name = "tmp"); 1037195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar 1038558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// CreateAggTemp - Create a temporary memory object for the given 1039558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// aggregate type. 1040558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot CreateAggTemp(QualType T, const llvm::Twine &Name = "tmp") { 1041558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall return AggValueSlot::forAddr(CreateMemTemp(T, Name), false, false); 1042558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall } 1043558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall 10445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateExprAsBool - Perform the usual unary conversions on the specified 10455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression and compare the result against zero, returning an Int1Ty value. 10465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Value *EvaluateExprAsBool(const Expr *E); 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10489b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// EmitAnyExpr - Emit code to compute the specified expression which can have 10499b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// any type. The result is returned as an RValue struct. If this is an 10509b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// aggregate expression, the aggloc/agglocvolatile arguments indicate where 10519b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// the result should be returned. 105249d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// 105349d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// \param IgnoreResult - True if the resulting value isn't used. 1054558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExpr(const Expr *E, 1055558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AggSlot = AggValueSlot::ignored(), 1056558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IgnoreResult = false); 1057d9363c3a80168283b3da518b4e17f545a6246857Devang Patel 10580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // EmitVAListRef - Emit a "reference" to a va_list; this is either the address 10590dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // or the value of the expression, depending on how va_list is defined. 10604fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman llvm::Value *EmitVAListRef(const Expr *E); 10614fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman 10620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will 10630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// always be accessible even if no aggregate location is provided. 1064558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExprToTemp(const Expr *E); 106546f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbar 10663d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall /// EmitsAnyExprToMem - Emits the code necessary to evaluate an 10673d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall /// arbitrary expression into the given memory location. 10683d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, 1069558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IsLocationVolatile, 1070558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool IsInitializer); 10713d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall 107227fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// EmitAggregateCopy - Emit an aggrate copy. 107327fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// 107427fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// \param isVolatile - True iff either the source or the destination is 107527fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// volatile. 10767482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, 107727fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump QualType EltTy, bool isVolatile=false); 10787482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar 107951b09f2c528c8460b5465c676173324e44176d62Devang Patel /// StartBlock - Start new block named N. If insert block is a dummy block 108051b09f2c528c8460b5465c676173324e44176d62Devang Patel /// then reuse it. 108151b09f2c528c8460b5465c676173324e44176d62Devang Patel void StartBlock(const char *N); 108251b09f2c528c8460b5465c676173324e44176d62Devang Patel 1083813733577d33ec56479667b49e1bff42dc6bba90Lauro Ramos Venancio /// GetAddrOfStaticLocalVar - Return the address of a static local variable. 10844c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD) { 10854c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return cast<llvm::Constant>(GetAddrOfLocalVar(BVD)); 10864c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 10874f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1088dde0a94120915fa925d1ffcdb997c7b44dc9fa21Anders Carlsson /// GetAddrOfLocalVar - Return the address of a local variable. 10894c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { 10904c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *Res = LocalDeclMap[VD]; 10914c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); 10924c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return Res; 10934c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 10940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 10954f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// getAccessedFieldNo - Given an encoded value and a result number, return 10964f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// the input field number being accessed. 10974f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); 10984f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1099d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner llvm::BlockAddress *GetAddrOfLabel(const LabelStmt *L); 11003d00fdc82fd550ae4bfbb2e700a1fc85bbd6d6fdChris Lattner llvm::BasicBlock *GetIndirectGotoBlock(); 11010ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 11021884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// EmitNullInitialization - Generate code to set a value of the given type to 11031884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// null, If the type contains data member pointers, they will be initialized 11041884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// to -1 in accordance with the Itanium C++ ABI. 11051884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); 1106ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1107ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // EmitVAArg - Generate code to get an argument from the passed in pointer 1108ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // and update it accordingly. The return value is a pointer to the argument. 1109ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // FIXME: We should be able to get rid of this method and use the va_arg 11100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // instruction in LLVM instead once it works well enough. 1111ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); 1112f666b7780d04186521adcaedb0e15dfa4d5e6933Anders Carlsson 1113f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// EmitVLASize - Generate code for any VLA size expressions that might occur 1114f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// in a variably modified type. If Ty is a VLA, will return the value that 1115f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// corresponds to the size in bytes of the VLA type. Will return 0 otherwise. 1116d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1117d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 111860d35413662ebdcd1d31e34a8a7c665eb6977f1eAnders Carlsson llvm::Value *EmitVLASize(QualType Ty); 11190dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1120dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson // GetVLASize - Returns an LLVM value that corresponds to the size in bytes 1121dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson // of a variable length array type. 1122dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson llvm::Value *GetVLASize(const VariableArrayType *); 1123dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson 11245f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// LoadCXXThis - Load the value of 'this'. This function is only valid while 11255f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// generating code for an C++ member function. 11262504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXThis() { 11272504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXThisValue && "no 'this' value for this function"); 11282504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXThisValue; 11292504941793b549323f9d29c62507cf21d865fadeJohn McCall } 11301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1131c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have 1132c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// virtual bases. 11332504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXVTT() { 11342504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXVTTValue && "no VTT value for this function"); 11352504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXVTTValue; 11362504941793b549323f9d29c62507cf21d865fadeJohn McCall } 1137bff225ecf77fb891596ecb1b27196310d268365eJohn McCall 1138bff225ecf77fb891596ecb1b27196310d268365eJohn McCall /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a 11398561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson /// complete class to the given direct base. 11408561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson llvm::Value * 11418561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, 11428561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 11438561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Base, 11448561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson bool BaseIsVirtual); 1145a88ad5618fcb07c5374c79d6781a33234984b039Anders Carlsson 1146f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// GetAddressOfBaseClass - This function will add the necessary delta to the 1147f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// load of 'this' and returns address of the base class. 114834a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, 11498561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1150f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1151f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 115234a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson bool NullCheckValue); 115334a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson 1154a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, 11558561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1156f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1157f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 11585a0f49ebc83e7fe0da07b9964c44b0a7fae270cbAnders Carlsson bool NullCheckValue); 1159a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson 1160bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson llvm::Value *GetVirtualBaseClassOffset(llvm::Value *This, 1161bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *ClassDecl, 1162bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *BaseClassDecl); 11632f1986b557fa671c4f8c9dd0d071398edfc073d5Anders Carlsson 1164c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, 1165c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall CXXCtorType CtorType, 1166c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall const FunctionArgList &Args); 1167155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, 1168155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson bool ForVirtualBase, llvm::Value *This, 1169b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1170b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 11711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1172288dcaf329c49b01dacd5c1dd9f35609555feecdFariborz Jahanian void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1173569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson const ConstantArrayType *ArrayTy, 11745d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 11755d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 117659174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 117759174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 11785d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson 1179569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1180569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson llvm::Value *NumElements, 11815d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 11825d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 118359174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 118459174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 1185b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson 1186f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian void EmitCXXAggrDestructorCall(const CXXDestructorDecl *D, 1187f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian const ArrayType *Array, 1188f800f6c09ed4a71bcb593d6962e0fda2c2845a70Fariborz Jahanian llvm::Value *This); 11891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119072c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian void EmitCXXAggrDestructorCall(const CXXDestructorDecl *D, 119172c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian llvm::Value *NumElements, 119272c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian llvm::Value *This); 119372c2153b466263a21870b2b1c817900d4981493eFariborz Jahanian 119402e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson llvm::Function *GenerateCXXAggrDestructorHelper(const CXXDestructorDecl *D, 119502e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson const ArrayType *Array, 119602e370a02f05b4a734fe5e8c88efc4ed9dac60faAnders Carlsson llvm::Value *This); 119788f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian 11987267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, 11998e6404ca28d6bbb76e97ea2a53a74816c2a74665Anders Carlsson bool ForVirtualBase, llvm::Value *This); 1200ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian 1201ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian void EmitNewArrayInitializer(const CXXNewExpr *E, llvm::Value *NewPtr, 1202ef66872797e46ced3ffdb428e582bc7f00474f99Fariborz Jahanian llvm::Value *NumElements); 12031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1204f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitCXXTemporary(const CXXTemporary *Temporary, llvm::Value *Ptr); 12051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1206a00703dccbdc6cc4a293db38477dea7db5538c7eAnders Carlsson llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); 120760e282cc1e508be327b0481cecedc206873cb86aAnders Carlsson void EmitCXXDeleteExpr(const CXXDeleteExpr *E); 12081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12094bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, 12104bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman QualType DeleteTy); 12114bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman 1212c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); 1213c849c052d6b4b70f2651c1969531861a5f230053Mike Stump llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); 1214c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump 1215b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump void EmitCheck(llvm::Value *, unsigned Size); 1216b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 1217dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, 1218dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 1219dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, 1220dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 12215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 12225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Declaration Emission 12235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 12240dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1225d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// EmitDecl - Emit a declaration. 1226d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1227d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 12285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDecl(const Decl &D); 1229d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1230b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitVarDecl - Emit a local variable declaration. 1231d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1232d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1233b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitVarDecl(const VarDecl &D); 1234d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1235f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, 1236f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *Address); 1237f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1238b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitAutoVarDecl - Emit an auto variable declaration. 1239d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1240d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1241b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitAutoVarDecl(const VarDecl &D, SpecialInitFn *SpecialInit = 0); 1242d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1243b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitStaticVarDecl(const VarDecl &D, 1244b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalValue::LinkageTypes Linkage); 1245b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar 1246b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. 1247b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar void EmitParmDecl(const VarDecl &D, llvm::Value *Arg); 12480dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 12505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Statement Emission 12515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 12525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12530dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. 12540912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitStopPoint(const Stmt *S); 12550912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 12560dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStmt - Emit the code for the statement \arg S. It is legal to call 12570dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// this function even if there is no current insertion point. 12580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// 12590dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function may clear the current insertion point; callers should use 12600dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint if they wish to subsequently generate code without first 12610dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calling EmitBlock, EmitBranch, or EmitStmt. 12625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStmt(const Stmt *S); 1263a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 12640912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// EmitSimpleStmt - Try to emit a "simple" statement which does not 12650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessarily require an insertion point or debug information; typically 12660dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// because the statement amounts to a jump or a container of other 12670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// statements. 12680912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// 12690912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// \return True if the statement was handled. 12700912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar bool EmitSimpleStmt(const Stmt *S); 12710912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 12729b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, 1273558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AVS = AggValueSlot::ignored()); 1274a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 12750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitLabel - Emit the block for the given label. It is legal to call this 12760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// function even if there is no current insertion point. 127791d723da7b68be5245c3ac58aa2a36d04658cfb8Chris Lattner void EmitLabel(const LabelStmt &S); // helper for EmitLabelStmt. 1278a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 12795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitLabelStmt(const LabelStmt &S); 12805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitGotoStmt(const GotoStmt &S); 12810ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar void EmitIndirectGotoStmt(const IndirectGotoStmt &S); 12825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitIfStmt(const IfStmt &S); 12835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitWhileStmt(const WhileStmt &S); 12845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDoStmt(const DoStmt &S); 12855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitForStmt(const ForStmt &S); 12865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitReturnStmt(const ReturnStmt &S); 12875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDeclStmt(const DeclStmt &S); 12880912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitBreakStmt(const BreakStmt &S); 12890912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitContinueStmt(const ContinueStmt &S); 129051b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitSwitchStmt(const SwitchStmt &S); 129151b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitDefaultStmt(const DefaultStmt &S); 129251b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitCaseStmt(const CaseStmt &S); 1293c049e4f406a7f7179eba98659044a32508e53289Devang Patel void EmitCaseStmtRange(const CaseStmt &S); 1294fb1aeb804c08d5288a923fb278161783e6abdc66Anders Carlsson void EmitAsmStmt(const AsmStmt &S); 12950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12963d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); 129764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); 129864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); 129910cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); 13000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 130186a3a03667bdb0dcab7e6a2877dfd234b07a6d43Douglas Gregor llvm::Constant *getUnwindResumeOrRethrowFn(); 130259a7000a79118e4c140885ccbb2ac6a686a73092John McCall void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 130359a7000a79118e4c140885ccbb2ac6a686a73092John McCall void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 13049fc6a7774643a810c8501dae2323e863fefb623eJohn McCall 13056815e941998659a55c20c147861b0f437928c3d8Anders Carlsson void EmitCXXTryStmt(const CXXTryStmt &S); 13066815e941998659a55c20c147861b0f437928c3d8Anders Carlsson 13075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 13085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LValue Expression Emission 13095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 13105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 131113e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. 131213e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar RValue GetUndefRValue(QualType Ty); 131313e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar 1314ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E 1315ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// and issue an ErrorUnsupported style diagnostic (using the 1316ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// provided Name). 1317ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar RValue EmitUnsupportedRValue(const Expr *E, 1318ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar const char *Name); 1319ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar 13200dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue 13210dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an ErrorUnsupported style diagnostic (using the provided Name). 13226ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar LValue EmitUnsupportedLValue(const Expr *E, 13236ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar const char *Name); 13246ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar 13255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLValue - Emit code to compute a designator that specifies the location 13265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the expression. 13275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 13285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// This can return one of two things: a simple address or a bitfield 13295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// reference. In either case, the LLVM Value* in the LValue structure is 13305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// guaranteed to be an LLVM pointer type. 13315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 13325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a bitfield reference, nothing about the pointee type of 13335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the LLVM value is known: For example, it may not be a pointer to an 13345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// integer. 13355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 13365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a normal address, and if the lvalue's C type is fixed 13375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// size, this method guarantees that the returned pointer type will point to 13385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an LLVM type of the same size of the lvalue's type. If the lvalue has a 13395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// variable length type, this is not possible. 13405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 13415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitLValue(const Expr *E); 13420dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1343b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// EmitCheckedLValue - Same as EmitLValue but additionally we generate 1344b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// checking code to guard against undefined behavior. This is only 1345b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// suitable when we know that the address will be used to access the 1346b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump /// object. 1347b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump LValue EmitCheckedLValue(const Expr *E); 1348b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 13499d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitLoadOfScalar - Load a scalar value from an address, taking 13509d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 13519d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 135209429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, 13533d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman unsigned Alignment, QualType Ty, 13543d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 13559d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 13569d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitStoreOfScalar - Store a scalar value to an address, taking 13579d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 13589d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 135909429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, 13603d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman bool Volatile, unsigned Alignment, QualType Ty, 13613d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 13629d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 13635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLoadOfLValue - Given an expression that represents a value lvalue, 13645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this method emits the address of the lvalue, then loads the result as an 13655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// rvalue, returning the rvalue. 13665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RValue EmitLoadOfLValue(LValue V, QualType LVType); 1367213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman RValue EmitLoadOfExtVectorElementLValue(LValue V, QualType LVType); 13683b8c22d93da1432b2d4cea779d14912645c93866Lauro Ramos Venancio RValue EmitLoadOfBitfieldLValue(LValue LV, QualType ExprType); 136985c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar RValue EmitLoadOfPropertyRefLValue(LValue LV, QualType ExprType); 137043f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian RValue EmitLoadOfKVCRefLValue(LValue LV, QualType ExprType); 13715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 13735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitStoreThroughLValue - Store the specified rvalue into the specified 13745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lvalue, where both are guaranteed to the have the same type, and that type 13755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is 'Ty'. 13765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStoreThroughLValue(RValue Src, LValue Dst, QualType Ty); 1377213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst, 1378213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman QualType Ty); 137985c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar void EmitStoreThroughPropertyRefLValue(RValue Src, LValue Dst, QualType Ty); 138043f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian void EmitStoreThroughKVCRefLValue(RValue Src, LValue Dst, QualType Ty); 1381ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar 13820dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue - Store Src into Dst with same constraints as 13830dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue. 1384ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar /// 13850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// \param Result [out] - If non-null, this will be set to a Value* for the 13860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// bit-field contents after the store, appropriate for use as the result of 13870dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an assignment to the bit-field. 1388ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, QualType Ty, 1389ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar llvm::Value **Result=0); 13900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 139122c940ee588a420cd2e6c8f68be2ac3cc80061ffChristopher Lamb // Note: only availabe for agg return types 139280e62c29fe21cd06c93eba6e72b7e32dca06fcf9Daniel Dunbar LValue EmitBinaryOperatorLValue(const BinaryOperator *E); 13936a03e345bb3c971750920e34a0d7d1ea7c9eceb7Douglas Gregor LValue EmitCompoundAssignOperatorLValue(const CompoundAssignOperator *E); 13945b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 139522c940ee588a420cd2e6c8f68be2ac3cc80061ffChristopher Lamb LValue EmitCallExprLValue(const CallExpr *E); 13965b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 13975b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar LValue EmitVAArgExprLValue(const VAArgExpr *E); 13985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitDeclRefLValue(const DeclRefExpr *E); 13995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitStringLiteralLValue(const StringLiteral *E); 1400eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); 1401d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner LValue EmitPredefinedLValue(const PredefinedExpr *E); 14025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitUnaryOpLValue(const UnaryOperator *E); 14035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); 1404213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); 1405b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel LValue EmitMemberExpr(const MemberExpr *E); 1406820bca41c3899374775d2a1dfc2ef2e22aaf1c7bFariborz Jahanian LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); 140706e863f2902b8ba55b056308875c19f7ba3dab25Eli Friedman LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); 14086fcec8b58d0571866fcb162db947b029cc539ec4Anders Carlsson LValue EmitConditionalOperatorLValue(const ConditionalOperator *E); 140975dfedaf702822c9e51a4f3c5d3ecf2d2ad99272Chris Lattner LValue EmitCastLValue(const CastExpr *E); 1410ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); 1411909fbf70223ea04a5ec8d449789f3683a89701ffAnders Carlsson 14122a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, 141329e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar const ObjCIvarDecl *Ivar); 1414a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall LValue EmitLValueForAnonRecordField(llvm::Value* Base, 1415a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall const FieldDecl* Field, 1416a9976d3b192690db20f59dc44099ac4ca939bdb7John McCall unsigned CVRQualifiers); 14170ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForField(llvm::Value* Base, const FieldDecl* Field, 1418e6d2a534851a649485cb087e9dfcaf8a65886858Anders Carlsson unsigned CVRQualifiers); 141906a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson 142006a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that 142106a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// if the Field is a reference, this will return the address of the reference 142206a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// and not the address of the value stored in the reference. 142306a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson LValue EmitLValueForFieldInitialization(llvm::Value* Base, 142406a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson const FieldDecl* Field, 142506a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson unsigned CVRQualifiers); 142606a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson 142745012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian LValue EmitLValueForIvar(QualType ObjectTy, 142845012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian llvm::Value* Base, const ObjCIvarDecl *Ivar, 142929e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar unsigned CVRQualifiers); 143029e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 14310ed303c918915cbe2c611cddbfabd00404664831Anders Carlsson LValue EmitLValueForBitfield(llvm::Value* Base, const FieldDecl* Field, 1432598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 1433fd64bb635dc221baa19f81d5d2a084f7eb269f7fFariborz Jahanian 1434a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump LValue EmitBlockDeclRefLValue(const BlockDeclRefExpr *E); 1435a99038c0757a836c6faeeddaa5dfd249b32f6e9eMike Stump 1436b58d017f2b9eeed33f2ab3ede968b89cf5296bf2Anders Carlsson LValue EmitCXXConstructLValue(const CXXConstructExpr *E); 1437e61c9e80a108b5db7e5f0e702f0e455d737c6390Anders Carlsson LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); 1438b9ea0b53d323cdca2b8284ff986a878e195cb97fAnders Carlsson LValue EmitCXXExprWithTemporariesLValue(const CXXExprWithTemporaries *E); 1439c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); 1440b9ea0b53d323cdca2b8284ff986a878e195cb97fAnders Carlsson 14410a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); 1442391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); 144385c59edda02df48fae8dc85049743319bc6e7e89Daniel Dunbar LValue EmitObjCPropertyRefLValue(const ObjCPropertyRefExpr *E); 144409105f52b1f28cbb1374c27c3c70f5517e2c465dFariborz Jahanian LValue EmitObjCKVCRefLValue(const ObjCImplicitSetterGetterRefExpr *E); 1445654599454c8e6cc83b1b9b3af43c49c2f66a26cbChris Lattner LValue EmitStmtExprLValue(const StmtExpr *E); 14468bfd31f9dad09cd52225d868bbd92a9bebe87775Fariborz Jahanian LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); 144703b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); 1448189d6ef40eff11b83b2cda941d5ed89a5cef09b2John McCall void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); 14495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 1450883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner // Scalar Expression Emission 14515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 14525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14530dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitCall - Generate a call of the given function, expecting the given 14540dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// result type, and using the given argument list which specifies both the 14550dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM arguments and the types they were derived from. 1456c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar /// 1457f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// \param TargetDecl - If given, the decl of the function in a direct call; 1458f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// used to set attributes on the call (noreturn, etc.). 145988b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar RValue EmitCall(const CGFunctionInfo &FnInfo, 146088b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Value *Callee, 1461f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson ReturnValueSlot ReturnValue, 1462c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const CallArgList &Args, 1463dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall const Decl *TargetDecl = 0, 14644b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction **callOrInvoke = 0); 14651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 146631777a2540879051a3c643b90e02c3fd3d315243Anders Carlsson RValue EmitCall(QualType FnType, llvm::Value *Callee, 1467d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue, 1468986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgBeg, 1469986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgEnd, 1470986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson const Decl *TargetDecl = 0); 1471d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson RValue EmitCallExpr(const CallExpr *E, 1472d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue = ReturnValueSlot()); 14731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1474f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 1475f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value * const *ArgBegin, 1476f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value * const *ArgEnd, 1477f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const llvm::Twine &Name = ""); 1478f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1479566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, 1480f0070dbae9535836ad41711081465dec2259786bMike Stump const llvm::Type *Ty); 1481566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, 1482566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *&This, const llvm::Type *Ty); 1483566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson 1484b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson RValue EmitCXXMemberCall(const CXXMethodDecl *MD, 1485b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *Callee, 1486a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue, 1487b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *This, 1488c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson llvm::Value *VTT, 1489b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1490b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 1491a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, 1492a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 1493a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, 1494a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 14955549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 14960f294632f36459174199b77699e339715244b5abAnders Carlsson RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, 1497a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson const CXXMethodDecl *MD, 1498a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 14991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1500375c31c4673f83f925de221752cf801c2fbbb246Anders Carlsson 15011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RValue EmitBuiltinExpr(const FunctionDecl *FD, 1502ef2abfee3ea16ec74942dc09e9e425f46aeb2582Daniel Dunbar unsigned BuiltinID, const CallExpr *E); 15035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1504a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); 150509429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 15060dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call 15070dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is unhandled by the current target. 1508f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 1509f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar 15102752c0137d95aa2f4ee1cdff4b564bac842e041bChris Lattner llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 151130d91718a676177f0d0d0210ce4fdb4f616df6e5Nate Begeman llvm::Value *EmitNeonCall(llvm::Function *F, 151230d91718a676177f0d0d0210ce4fdb4f616df6e5Nate Begeman llvm::SmallVectorImpl<llvm::Value*> &O, 151361eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman const char *name, bool splat = false, 151461eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman unsigned shift = 0, bool rightshift = false); 1515cd480ad90ff4c144084805761d2dfa52ee9e1c92Nate Begeman llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx, 1516cd480ad90ff4c144084805761d2dfa52ee9e1c92Nate Begeman bool widen = false); 1517464ccb68f22a7e1c0a2844551c16f721540c91c3Nate Begeman llvm::Value *EmitNeonShiftVector(llvm::Value *V, const llvm::Type *Ty, 151861eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman bool negateForRightShift); 151930d91718a676177f0d0d0210ce4fdb4f616df6e5Nate Begeman 1520aa51e513850688b7963efc62abf1eface7037602Bill Wendling llvm::Value *BuildVector(const llvm::SmallVectorImpl<llvm::Value*> &Ops); 1521564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); 1522564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 15230dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1524ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); 15257f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); 15268fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); 1527ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, 1528ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 1529ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCPropertyGet(const Expr *E, 1530ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 1531ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCSuperPropertyGet(const Expr *Exp, const Selector &S, 1532ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 153343f447098d5e6162fbfb97ed38365284207a7fbeFariborz Jahanian void EmitObjCPropertySet(const Expr *E, RValue Src); 1534f469557743f77918d2ca8226e2ee2888998ffd4aFariborz Jahanian void EmitObjCSuperPropertySet(const Expr *E, const Selector &S, RValue Src); 15358fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 15368fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 15374029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in 15384029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// expression. Will emit a temporary variable if E is not an LValue. 153932f36baa6c8d491c374af622b4e3ac28d597453cAnders Carlsson RValue EmitReferenceBindingToExpr(const Expr* E, 154032f36baa6c8d491c374af622b4e3ac28d597453cAnders Carlsson const NamedDecl *InitializedDecl); 15413aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 1542883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 1543bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expression Emission 1544883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 1545bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner 1546bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expressions are broken into three classes: scalar, complex, aggregate. 15470dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 15480dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitScalarExpr - Emit the computation of the specified expression of LLVM 15490dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// scalar type, returning the result. 155014c5cbf59cffee52275230922283a247de407712Anders Carlsson llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); 15510dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 15523707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 15533707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 15543707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, 15553707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner QualType DstTy); 15560dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 15574f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 15580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// complex type to the specified destination type, where the destination type 15590dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is an LLVM scalar type. 15604f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, 15614f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy); 15620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 15630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1564558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// EmitAggExpr - Emit the computation of the specified expression 1565558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// of aggregate type. The result is computed into the given slot, 1566558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// which may be null to indicate that the value is not needed. 1567474e2fe4957e6e72cee36ed189eaf21878ad0e91Fariborz Jahanian void EmitAggExpr(const Expr *E, AggValueSlot AS, bool IgnoreResult = false); 15680dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 156918aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// EmitAggExprToLValue - Emit the computation of the specified expression of 157018aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// aggregate type into a temporary LValue. 157118aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar LValue EmitAggExprToLValue(const Expr *E); 157218aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar 1573082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// EmitGCMemmoveCollectable - Emit special API for structs with object 1574082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// pointers. 1575082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, 157608c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 1577082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 1578b6ef18a2b06d6760459e1756a61f79ff496cee19Chris Lattner /// EmitComplexExpr - Emit the computation of the specified expression of 157923b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// complex type, returning the result. 15807f79f9be5916c51c35da4f126b7c12596a101607Mike Stump ComplexPairTy EmitComplexExpr(const Expr *E, bool IgnoreReal = false, 15817f79f9be5916c51c35da4f126b7c12596a101607Mike Stump bool IgnoreImag = false, 15827f79f9be5916c51c35da4f126b7c12596a101607Mike Stump bool IgnoreRealAssign = false, 15837f79f9be5916c51c35da4f126b7c12596a101607Mike Stump bool IgnoreImagAssign = false); 15840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 158523b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// EmitComplexExprIntoAddr - Emit the computation of the specified expression 158623b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// of complex type, storing into the specified Value*. 1587190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, 1588190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner bool DestIsVolatile); 15897f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar 15907f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar /// StoreComplexToAddr - Store a complex number into the specified address. 15917f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, 15927f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar bool DestIsVolatile); 15939b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// LoadComplexFromAddr - Load a complex number from the specified address. 15949b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); 15952621fd1d6d3c5eadcae246859f62738645df7540Chris Lattner 1596b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// CreateStaticVarDecl - Create a zero-initialized LLVM global for 1597b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// a static local variable. 1598b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, 1599b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall const char *Separator, 1600f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump llvm::GlobalValue::LinkageTypes Linkage); 1601761acc19d966a67f2175783d09412d6ac9463400Chris Lattner 1602b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the 1603761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// global variable that has already been created for it. If the initializer 1604761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// has a different type than GV does, this may free GV and return a different 1605761acc19d966a67f2175783d09412d6ac9463400Chris Lattner /// one. Otherwise it just returns GV. 1606761acc19d966a67f2175783d09412d6ac9463400Chris Lattner llvm::GlobalVariable * 1607b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall AddInitializerToStaticVarDecl(const VarDecl &D, 1608b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalVariable *GV); 1609761acc19d966a67f2175783d09412d6ac9463400Chris Lattner 16100096acf421c4609ce7f43e8b05f8c5ca866d4611Daniel Dunbar 16113b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ 16123b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// variable with global storage. 16133b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr); 16143b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson 16153b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalDtorRegistration - Emits a call to register the global ptr 16163b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// with the C++ runtime so that its destructor will be called at exit. 161788f4280f6b60edcbdea6a38a3da8b17d66473ad6Fariborz Jahanian void EmitCXXGlobalDtorRegistration(llvm::Constant *DtorFn, 16183b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson llvm::Constant *DeclPtr); 16191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16205cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall void EmitCXXStaticLocalInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr); 16215cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 1622efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalInitFunc - Generates code for initializing global 1623efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 1624efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalInitFunc(llvm::Function *Fn, 1625efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant **Decls, 1626efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar unsigned NumDecls); 1627efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 1628efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalDtorFunc - Generates code for destroying global 1629efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 1630efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalDtorFunc(llvm::Function *Fn, 1631810112e28dc839715d17b0a786f23aaa19600ac0Chris Lattner const std::vector<std::pair<llvm::WeakVH, 1632efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant*> > &DtorsAndObjects); 1633efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 1634efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, const VarDecl *D); 1635efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 1636558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); 16371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1638b58d017f2b9eeed33f2ab3ede968b89cf5296bf2Anders Carlsson RValue EmitCXXExprWithTemporaries(const CXXExprWithTemporaries *E, 1639558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot Slot 1640558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall = AggValueSlot::ignored()); 16411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1642756b5c4f9d52642d87d1948bee58f97a4f795b24Anders Carlsson void EmitCXXThrowExpr(const CXXThrowExpr *E); 16431eb2e59338c4b9c0429fc39ca98662adc9e7a3f2Douglas Gregor 16440ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 16450ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar // Internal Helpers 16460ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 16470dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 16480946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// ContainsLabel - Return true if the statement contains a label in it. If 16490946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// this statement is not executed normally, it not containing a label means 16500946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// that we can just remove the code. 16510946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); 16520dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 16534bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 165431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// to a constant, or if it does but contains a label, return 0. If it 165531a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// constant folds to 'true' and does not contain a label, return 1, if it 165631a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// constant folds to 'false' and does not contain a label, return -1. 165731a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner int ConstantFoldsToSimpleInteger(const Expr *Cond); 16580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 165931a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an 166031a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// if statement) to the specified blocks. Based on the condition, this might 166131a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// try to simplify the codegen of the conditional based on the branch. 16629bc47e29dce8f095be7a6d07dbb02a5a7a112949Chris Lattner void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, 16634bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar llvm::BasicBlock *FalseBlock); 1664be07f60131bc6f8d6696f4644df1ef667a1730d5Mike Stump 166515037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// getTrapBB - Create a basic block that will call the trap intrinsic. We'll 166615037caa1542bb810ad54c653aeb80f61df7b00cMike Stump /// generate a branch around the created basic block as necessary. 16676c552c1d5f47fbba00e6268d96a26ad026f2da2aChris Lattner llvm::BasicBlock *getTrapBB(); 16686c552c1d5f47fbba00e6268d96a26ad026f2da2aChris Lattner 166921c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson /// EmitCallArg - Emit a single call argument. 167021c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson RValue EmitCallArg(const Expr *E, QualType ArgType); 167121c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson 16722736071ea3a46f90e65c93418961611d96c10ab9John McCall /// EmitDelegateCallArg - We are performing a delegate call; that 16732736071ea3a46f90e65c93418961611d96c10ab9John McCall /// is, the current function is delegating to another one. Produce 16742736071ea3a46f90e65c93418961611d96c10ab9John McCall /// a r-value suitable for passing the given parameter. 16752736071ea3a46f90e65c93418961611d96c10ab9John McCall RValue EmitDelegateCallArg(const VarDecl *Param); 16762736071ea3a46f90e65c93418961611d96c10ab9John McCall 167731a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattnerprivate: 167829e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar void EmitReturnOfRValue(RValue RV, QualType Ty); 167929e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 16805627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty 16815627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// from function arguments into \arg Dst. See ABIArgInfo::Expand. 16825627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// 16835627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \param AI - The first function argument of the expansion. 16845627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \return The argument following the last expanded function 16855627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// argument. 16860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump llvm::Function::arg_iterator 16875627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeFromArgs(QualType Ty, LValue Dst, 16885627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator AI); 16895627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 16900dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg 16910dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// Ty, into individual arguments on the provided vector \arg Args. See 16920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ABIArgInfo::Expand. 16930dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void ExpandTypeToArgs(QualType Ty, RValue Src, 16945627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::SmallVector<llvm::Value*, 16> &Args); 1695c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson 16961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value* EmitAsmInput(const AsmStmt &S, 1697b84e8a670ad1d00c0a34295c42ac700cdde04815Daniel Dunbar const TargetInfo::ConstraintInfo &Info, 1698c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson const Expr *InputExpr, std::string &ConstraintStr); 16990dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 17006d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman llvm::Value* EmitAsmInputLValue(const AsmStmt &S, 17016d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman const TargetInfo::ConstraintInfo &Info, 17026d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman LValue InputValue, QualType InputType, 17036d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman std::string &ConstraintStr); 17046d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman 17050139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson /// EmitCallArgs - Emit call arguments for a function. 17061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// The CallArgTypeInfo parameter is used for iterating over the known 1707af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson /// argument types of the function being called. 1708af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson template<typename T> 1709af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, 17100139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1711af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator ArgEnd) { 1712af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator Arg = ArgBeg; 1713af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson 1714af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // First, use the argument types that the type info knows about 1715af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson if (CallArgTypeInfo) { 1716af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), 1717af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { 171844b0a3e858af7b19f489619e52cd58970611cd15Eli Friedman assert(Arg != ArgEnd && "Running over edge of argument list!"); 1719af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson QualType ArgType = *I; 1720745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#ifndef NDEBUG 1721745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ActualArgType = Arg->getType(); 1722745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgType->isPointerType() && ActualArgType->isPointerType()) { 1723745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ActualBaseType = 1724745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType->getAs<PointerType>()->getPointeeType(); 1725745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ArgBaseType = 1726745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ArgType->getAs<PointerType>()->getPointeeType(); 1727745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgBaseType->isVariableArrayType()) { 1728745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (const VariableArrayType *VAT = 1729745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getAsVariableArrayType(ActualBaseType)) { 1730745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (!VAT->getSizeExpr()) 1731745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType = ArgType; 1732745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 1733745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 1734745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 1735af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). 17361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump getTypePtr() == 1737745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getCanonicalType(ActualArgType).getTypePtr() && 1738af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "type mismatch in call argument!"); 1739745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#endif 17401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Args.push_back(std::make_pair(EmitCallArg(*Arg, ArgType), 1741af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson ArgType)); 1742af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 17431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Either we've emitted all the call args, or we have a call to a 1745af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // variadic function. 17461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && 1747af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "Extra arguments in non-variadic function!"); 17481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1749af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 17501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1751af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // If we still have any arguments, emit them using the type of the argument. 1752af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson for (; Arg != ArgEnd; ++Arg) { 1753af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson QualType ArgType = Arg->getType(); 1754af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson Args.push_back(std::make_pair(EmitCallArg(*Arg, ArgType), 1755af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson ArgType)); 1756af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 1757af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 1758492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall 1759492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall const TargetCodeGenInfo &getTargetHooks() const { 1760492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall return CGM.getTargetCodeGenInfo(); 1761492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall } 1762744016dde06fcffd50931e94a98c850f8b12cd87John McCall 1763744016dde06fcffd50931e94a98c850f8b12cd87John McCall void EmitDeclMetadata(); 17645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 17651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 176689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian/// CGBlockInfo - Information to generate a block literal. 176789ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanianclass CGBlockInfo { 176889ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanianpublic: 176989ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// Name - The name of the block, kindof. 177089ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const char *Name; 177189ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 177289ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// DeclRefs - Variables from parent scopes that have been 177389ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// imported into this block. 177489ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian llvm::SmallVector<const BlockDeclRefExpr *, 8> DeclRefs; 177589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 177689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// InnerBlocks - This block and the blocks it encloses. 177789ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian llvm::SmallPtrSet<const DeclContext *, 4> InnerBlocks; 177889ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 177989ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// CXXThisRef - Non-null if 'this' was required somewhere, in 178089ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// which case this is that expression. 178189ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const CXXThisExpr *CXXThisRef; 178289ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 178389ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// NeedsObjCSelf - True if something in this block has an implicit 178489ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// reference to 'self'. 178589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian bool NeedsObjCSelf; 178689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 178789ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian /// These are initialized by GenerateBlockFunction. 178889ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian bool BlockHasCopyDispose; 178989ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian CharUnits BlockSize; 179089ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian CharUnits BlockAlign; 179189ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian llvm::SmallVector<const Expr*, 8> BlockLayout; 179289ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 179389ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian CGBlockInfo(const char *Name); 179489ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian}; 179589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian 17965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace CodeGen 17975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 17985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 17995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 1800