CodeGenFunction.h revision 7ac9ef1c82c779a5348ed11b3d10e01c58803b35
1bd012ff1fa088181646a784f385b28867372d434Daniel Dunbar//===-- CodeGenFunction.h - Per-Function state for LLVM CodeGen -*- C++ -*-===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump// This is the internal per-function state used for llvm translation. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14ef52a2fb2ace36c92f88c6e125bd7defa17dafa5Chris Lattner#ifndef CLANG_CODEGEN_CODEGENFUNCTION_H 15ef52a2fb2ace36c92f88c6e125bd7defa17dafa5Chris Lattner#define CLANG_CODEGEN_CODEGENFUNCTION_H 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 17391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner#include "clang/AST/Type.h" 18e3a09e6ad09f8d1387ecaa008aaf85527909da0aArgyrios Kyrtzidis#include "clang/AST/ExprCXX.h" 195549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek#include "clang/AST/ExprObjC.h" 20199c3d6cd16aebbb9c7f0d42af9d922c9628bf70Ken Dyck#include "clang/AST/CharUnits.h" 21f85e193739c953358c865005855253af4f68a497John McCall#include "clang/Frontend/CodeGenOptions.h" 2214110477887e3dc168ffc6c191e72d705051f99ePeter Collingbourne#include "clang/Basic/ABI.h" 23481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "clang/Basic/TargetInfo.h" 244c7d9f1507d0f102bd4133bba63348636facd469Jay Foad#include "llvm/ADT/ArrayRef.h" 25481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/DenseMap.h" 26481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/ADT/SmallVector.h" 27481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner#include "llvm/Support/ValueHandle.h" 28c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher#include "llvm/Support/Debug.h" 2969243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson#include "CodeGenModule.h" 3045d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar#include "CGBuilder.h" 31c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher#include "CGDebugInfo.h" 328f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CGValue.h" 338f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace llvm { 35c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class BasicBlock; 36f21efe9088a0b3eda1209d1706529f6cb2073092Benjamin Kramer class LLVMContext; 37dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall class MDNode; 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Module; 39898d508d4c9e9d45914952473e39196b20830a9fDaniel Dunbar class SwitchInst; 40259e9ccf882d11491ad149aec5e6d7a061c9f938Daniel Dunbar class Twine; 41ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar class Value; 42f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class CallSite; 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class ASTContext; 471a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall class BlockDecl; 487267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson class CXXDestructorDecl; 49ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith class CXXForRangeStmt; 506815e941998659a55c20c147861b0f437928c3d8Anders Carlsson class CXXTryStmt; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class Decl; 52ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner class LabelDecl; 53c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class EnumConstantDecl; 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class FunctionDecl; 5572564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor class FunctionProtoType; 56c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class LabelStmt; 57679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian class ObjCContainerDecl; 5829e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCInterfaceDecl; 5929e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar class ObjCIvarDecl; 60391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner class ObjCMethodDecl; 61fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian class ObjCImplementationDecl; 62af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar class ObjCPropertyImplDecl; 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer class TargetInfo; 64492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall class TargetCodeGenInfo; 65c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar class VarDecl; 6616f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCForCollectionStmt; 6716f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtTryStmt; 6816f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtThrowStmt; 6916f0049415ec596504891259e2a83e19871c0d52Chris Lattner class ObjCAtSynchronizedStmt; 70f85e193739c953358c865005855253af4f68a497John McCall class ObjCAutoreleasePoolStmt; 715549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace CodeGen { 73b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel class CodeGenTypes; 74bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar class CGFunctionInfo; 750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump class CGRecordLayout; 76ee5042903d53fa7b0fbc1902d0ea07d57c7775b1John McCall class CGBlockInfo; 774c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall class CGCXXABI; 78d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFlags; 79d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall class BlockFieldFlags; 800dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 81f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A branch fixup. These are required when emitting a goto to a 82f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// label which hasn't been emitted yet. The goto is optimistically 83f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// emitted as a branch to the basic block for the label, and (if it 84f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// occurs in a scope with non-trivial cleanups) a fixup is added to 85f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// the innermost cleanup. When a (normal) cleanup is popped, any 86f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// unresolved fixups in that scope are threaded through the cleanup. 87f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallstruct BranchFixup { 88ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The block containing the terminator which needs to be modified 89ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// into a switch if this fixup is resolved into the current scope. 90ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// If null, LatestBranch points directly to the destination. 91ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *OptimisticBranchBlock; 92f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 93ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The ultimate destination of the branch. 94f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 95f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// This can be set to null to indicate that this fixup was 96f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// successfully resolved. 97f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Destination; 98f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 99ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The destination index value. 100ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned DestinationIndex; 101ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 102ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// The initial branch of the fixup. 103ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BranchInst *InitialBranch; 104f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 105f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 106804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct InvariantValue { 107150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T type; 108150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef T saved_type; 109150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(type value) { return false; } 110150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, type value) { return value; } 111150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { return value; } 112150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 113804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 114804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A metaprogramming class for ensuring that a value will dominate an 115804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// arbitrary position in a function. 116804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue : InvariantValue<T> {}; 117804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 118804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T, bool mightBeInstruction = 119804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::is_base_of<llvm::Value, T>::value && 120804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::Constant, T>::value && 121804b807ea918184d6de63bd745e1ff75a9bfc679John McCall !llvm::is_base_of<llvm::BasicBlock, T>::value> 122804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingPointer; 123804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,false> : InvariantValue<T*> {}; 124804b807ea918184d6de63bd745e1ff75a9bfc679John McCall// template <class T> struct DominatingPointer<T,true> at end of file 125804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 126804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingValue<T*> : DominatingPointer<T> {}; 127150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 128cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCallenum CleanupKind { 129cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall EHCleanup = 0x1, 130cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalCleanup = 0x2, 131cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall NormalAndEHCleanup = EHCleanup | NormalCleanup, 132cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 133cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveCleanup = 0x4, 134cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveEHCleanup = EHCleanup | InactiveCleanup, 135cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalCleanup = NormalCleanup | InactiveCleanup, 136cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall InactiveNormalAndEHCleanup = NormalAndEHCleanup | InactiveCleanup 137cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall}; 138da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 139f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// A stack of scopes which respond to exceptions, including cleanups 140f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall/// and catch blocks. 141f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallclass EHScopeStack { 142f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 143f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A saved depth on the scope stack. This is necessary because 144f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushing scopes onto the stack invalidates iterators. 145f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class stable_iterator { 146f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend class EHScopeStack; 147f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 148f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Offset from StartOfData to EndOfBuffer. 149f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ptrdiff_t Size; 150f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 151f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator(ptrdiff_t Size) : Size(Size) {} 152f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 153f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall public: 154f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator invalid() { return stable_iterator(-1); } 155f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator() : Size(-1) {} 156f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 157f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool isValid() const { return Size >= 0; } 158f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 159838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope encloses I. 160838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false if I is invalid. 161838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 162ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool encloses(stable_iterator I) const { return Size <= I.Size; } 163838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall 164838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns true if this scope strictly encloses I: that is, 165838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// if it encloses I and is not I. 166838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// Returns false is I is invalid. 167838d796d020f6a8cd2b2d1e2a0a85c83bbf29543John McCall /// This scope must be valid. 168ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool strictlyEncloses(stable_iterator I) const { return Size < I.Size; } 1691bda662cb37d9fe24be4b3cf8ea0f4e550e1f889John McCall 170f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator==(stable_iterator A, stable_iterator B) { 171f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size == B.Size; 172f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 173f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall friend bool operator!=(stable_iterator A, stable_iterator B) { 174f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return A.Size != B.Size; 175f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 176f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall }; 177f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1781f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Information for lazily generating a cleanup. Subclasses must be 1791f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// POD-like: cleanups will not be destructed, and they will be 1801f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// allocated on the cleanup stack and freely copied and moved 1811f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// around. 182da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 1831f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall /// Cleanup implementations should generally be declared in an 184da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// anonymous namespace. 1851f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall class Cleanup { 186c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // Anchor the construction vtable. 187c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall virtual void anchor(); 188da65ea86482bc116906edfb9ba1d7124f76cc867John McCall public: 189ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// Generation flags. 190ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall class Flags { 191ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall enum { 192ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall F_IsForEH = 0x1, 193ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall F_IsNormalCleanupKind = 0x2, 194ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall F_IsEHCleanupKind = 0x4 195ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall }; 196ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall unsigned flags; 197ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 198ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall public: 199ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall Flags() : flags(0) {} 200ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 201ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// isForEH - true if the current emission is for an EH cleanup. 202ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isForEHCleanup() const { return flags & F_IsForEH; } 203ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isForNormalCleanup() const { return !isForEHCleanup(); } 204ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void setIsForEHCleanup() { flags |= F_IsForEH; } 205ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 206ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isNormalCleanupKind() const { return flags & F_IsNormalCleanupKind; } 207ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void setIsNormalCleanupKind() { flags |= F_IsNormalCleanupKind; } 208ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 209ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// isEHCleanupKind - true if the cleanup was pushed as an EH 210ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall /// cleanup. 211ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall bool isEHCleanupKind() const { return flags & F_IsEHCleanupKind; } 212ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void setIsEHCleanupKind() { flags |= F_IsEHCleanupKind; } 213ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall }; 214ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall 215c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // Provide a virtual destructor to suppress a very common warning 216c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // that unfortunately cannot be suppressed without this. Cleanups 217c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall // should not rely on this destructor ever being called. 218c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall virtual ~Cleanup() {} 2193e29f96988b0438e42dba3790f61fb3df42d90cbJohn McCall 220da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Emit the cleanup. For normal cleanups, this is run in the 221da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// same EH context as when the cleanup was pushed, i.e. the 222da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// immediately-enclosing context of the cleanup scope. For 223da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// EH cleanups, this is run in a terminate context. 224da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// 22570517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko // \param flags cleanup kind. 226ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall virtual void Emit(CodeGenFunction &CGF, Flags flags) = 0; 227da65ea86482bc116906edfb9ba1d7124f76cc867John McCall }; 228da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 229150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// ConditionalCleanupN stores the saved form of its N parameters, 230150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// then restores them and performs the cleanup. 2313ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 2323ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup1 : public Cleanup { 233804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 2343ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall A0_saved a0_saved; 2353ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 236ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 237804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 238ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0).Emit(CGF, flags); 2393ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 2403ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 2413ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall public: 2423ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup1(A0_saved a0) 2433ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0) {} 2443ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall }; 2453ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 246150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 2473ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall class ConditionalCleanup2 : public Cleanup { 248804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 249804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef typename DominatingValue<A1>::saved_type A1_saved; 2504bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A0_saved a0_saved; 2514bbcbda302cba8b1b0d88c20d735d09b483bd005John McCall A1_saved a1_saved; 252150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 253ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 254804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 255804b807ea918184d6de63bd745e1ff75a9bfc679John McCall A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 256ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0, a1).Emit(CGF, flags); 257150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 258150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 259150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 2603ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall ConditionalCleanup2(A0_saved a0, A1_saved a1) 2613ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall : a0_saved(a0), a1_saved(a1) {} 262150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 263150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 264d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor template <class T, class A0, class A1, class A2> 265d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor class ConditionalCleanup3 : public Cleanup { 266d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef typename DominatingValue<A0>::saved_type A0_saved; 267d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef typename DominatingValue<A1>::saved_type A1_saved; 268d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef typename DominatingValue<A2>::saved_type A2_saved; 269d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A0_saved a0_saved; 270d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A1_saved a1_saved; 271d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A2_saved a2_saved; 272d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 273ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 274d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 275d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 276d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); 277ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0, a1, a2).Emit(CGF, flags); 278d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor } 279d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 280d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor public: 281d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor ConditionalCleanup3(A0_saved a0, A1_saved a1, A2_saved a2) 282c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall : a0_saved(a0), a1_saved(a1), a2_saved(a2) {} 283d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor }; 284d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 2859928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall template <class T, class A0, class A1, class A2, class A3> 2869928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall class ConditionalCleanup4 : public Cleanup { 2879928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A0>::saved_type A0_saved; 2889928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A1>::saved_type A1_saved; 2899928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A2>::saved_type A2_saved; 2909928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef typename DominatingValue<A3>::saved_type A3_saved; 2919928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A0_saved a0_saved; 2929928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A1_saved a1_saved; 2939928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A2_saved a2_saved; 2949928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A3_saved a3_saved; 2959928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 296ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall void Emit(CodeGenFunction &CGF, Flags flags) { 2979928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A0 a0 = DominatingValue<A0>::restore(CGF, a0_saved); 2989928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A1 a1 = DominatingValue<A1>::restore(CGF, a1_saved); 2999928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A2 a2 = DominatingValue<A2>::restore(CGF, a2_saved); 3009928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall A3 a3 = DominatingValue<A3>::restore(CGF, a3_saved); 301ad346f4f678ab1c3222425641d851dc63e9dfa1aJohn McCall T(a0, a1, a2, a3).Emit(CGF, flags); 3029928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 3039928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 3049928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall public: 3059928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall ConditionalCleanup4(A0_saved a0, A1_saved a1, A2_saved a2, A3_saved a3) 3069928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall : a0_saved(a0), a1_saved(a1), a2_saved(a2), a3_saved(a3) {} 3079928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall }; 3089928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 309f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallprivate: 310f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // The implementation for this class is in CGException.h and 311f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // CGException.cpp; the definition is here because it's used as a 312f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // member of CodeGenFunction. 313f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 314f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The start of the scope-stack buffer, i.e. the allocated pointer 315f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// for the buffer. All of these pointers are either simultaneously 316f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// null or simultaneously valid. 317f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfBuffer; 318f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 319f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The end of the buffer. 320f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *EndOfBuffer; 321f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 322f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The first valid entry in the buffer. 323f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *StartOfData; 324f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 325f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The innermost normal cleanup on the stack. 326f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator InnermostNormalCleanup; 327f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 328777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// The innermost EH scope on the stack. 329777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator InnermostEHScope; 330ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 331f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The current set of branch fixups. A branch fixup is a jump to 332f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// an as-yet unemitted label, i.e. a label for which we don't yet 333f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// know the EH stack depth. Whenever we pop a cleanup, we have 334f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to thread all the current branch fixups through it. 335f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 336f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Fixups are recorded as the Use of the respective branch or 337f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// switch statement. The use points to the final destination. 338f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// When popping out of a cleanup, these uses are threaded through 339f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup and adjusted to point to the new cleanup. 340f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// 341f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Note that branches are allowed to jump into protected scopes 342f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// in certain situations; e.g. the following code is legal: 343f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// struct A { ~A(); }; // trivial ctor, non-trivial dtor 344f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// goto foo; 345f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A a; 346f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// foo: 347f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// bar(); 348686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<BranchFixup, 8> BranchFixups; 349f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 350f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall char *allocate(size_t Size); 351f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 3521f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *pushCleanup(CleanupKind K, size_t DataSize); 353da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 354f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 355f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack() : StartOfBuffer(0), EndOfBuffer(0), StartOfData(0), 356f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall InnermostNormalCleanup(stable_end()), 357777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall InnermostEHScope(stable_end()) {} 358f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~EHScopeStack() { delete[] StartOfBuffer; } 359f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 360da65ea86482bc116906edfb9ba1d7124f76cc867John McCall // Variadic templates would make this not terrible. 361da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 362da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 3638e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T> 3641f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind) { 3651f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3661f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(); 3678e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3688e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3698e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3708e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 3718e3f86193995c47ee0d229e4336c3382410f09f5John McCall template <class T, class A0> 3721f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0) { 3731f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3741f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0); 3758e3f86193995c47ee0d229e4336c3382410f09f5John McCall (void) Obj; 3768e3f86193995c47ee0d229e4336c3382410f09f5John McCall } 3778e3f86193995c47ee0d229e4336c3382410f09f5John McCall 3788e3f86193995c47ee0d229e4336c3382410f09f5John McCall /// Push a lazily-created cleanup on the stack. 379da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1> 3801f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1) { 3811f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3821f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1); 383da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 384da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 385da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 386da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 387da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2> 3881f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2) { 3891f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3901f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2); 391da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 392da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 393da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 394da65ea86482bc116906edfb9ba1d7124f76cc867John McCall /// Push a lazily-created cleanup on the stack. 395da65ea86482bc116906edfb9ba1d7124f76cc867John McCall template <class T, class A0, class A1, class A2, class A3> 3961f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3) { 3971f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 3981f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3); 399da65ea86482bc116906edfb9ba1d7124f76cc867John McCall (void) Obj; 400da65ea86482bc116906edfb9ba1d7124f76cc867John McCall } 401da65ea86482bc116906edfb9ba1d7124f76cc867John McCall 40277199713ab56f87ffad9a535ff2a0877704eed87John McCall /// Push a lazily-created cleanup on the stack. 40377199713ab56f87ffad9a535ff2a0877704eed87John McCall template <class T, class A0, class A1, class A2, class A3, class A4> 4041f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void pushCleanup(CleanupKind Kind, A0 a0, A1 a1, A2 a2, A3 a3, A4 a4) { 4051f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall void *Buffer = pushCleanup(Kind, sizeof(T)); 4061f0fca54676cfa8616e7f3cd7a26788ab937e3cdJohn McCall Cleanup *Obj = new(Buffer) T(a0, a1, a2, a3, a4); 40777199713ab56f87ffad9a535ff2a0877704eed87John McCall (void) Obj; 40877199713ab56f87ffad9a535ff2a0877704eed87John McCall } 40977199713ab56f87ffad9a535ff2a0877704eed87John McCall 4107d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall // Feel free to add more variants of the following: 4117d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 4127d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Push a cleanup with non-constant storage requirements on the 4137d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. The cleanup type must provide an additional static method: 4147d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// static size_t getExtraSize(size_t); 4157d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The argument to this method will be the value N, which will also 4167d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// be passed as the first argument to the constructor. 4177d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 4187d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The data stored in the extra storage must obey the same 4197d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// restrictions as normal cleanup member data. 4207d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// 4217d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The pointer returned from this method is valid until the cleanup 4227d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack is modified. 4237d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall template <class T, class A0, class A1, class A2> 4247d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall T *pushCleanupWithExtra(CleanupKind Kind, size_t N, A0 a0, A1 a1, A2 a2) { 4257d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall void *Buffer = pushCleanup(Kind, sizeof(T) + T::getExtraSize(N)); 4267d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall return new (Buffer) T(N, a0, a1, a2); 4277d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall } 4287d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 429777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// Pops a cleanup scope off the stack. This is private to CGCleanup.cpp. 430f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCleanup(); 431f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 432f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a set of catch handlers on the stack. The catch is 433f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// uninitialized and will need to have the given number of handlers 434f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// set on it. 435f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHCatchScope *pushCatch(unsigned NumHandlers); 436f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 437777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// Pops a catch scope off the stack. This is private to CGException.cpp. 438f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popCatch(); 439f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 440f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push an exceptions filter on the stack. 441f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class EHFilterScope *pushFilter(unsigned NumFilters); 442f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 443f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops an exceptions filter off the stack. 444f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popFilter(); 445f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 446f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Push a terminate handler on the stack. 447f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void pushTerminate(); 448f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 449f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Pops a terminate handler off the stack. 450f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void popTerminate(); 451f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 452f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether the exception-scopes stack is empty. 453f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool empty() const { return StartOfData == EndOfBuffer; } 454f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 455f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool requiresLandingPad() const { 456777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall return InnermostEHScope != stable_end(); 457f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 458f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 459f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Determines whether there are any normal cleanups on the stack. 460f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall bool hasNormalCleanups() const { 461f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup != stable_end(); 462f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 463f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 464f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns the innermost normal cleanup on the stack, or 465f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stable_end() if there are no normal cleanups. 466f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator getInnermostNormalCleanup() const { 467f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return InnermostNormalCleanup; 468f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 469777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator getInnermostActiveNormalCleanup() const; 470f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 471777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator getInnermostEHScope() const { 472777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall return InnermostEHScope; 473f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 474f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 475777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall stable_iterator getInnermostActiveEHScope() const; 476f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 477f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// An unstable reference to a scope-stack depth. Invalidated by 478f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// pushes but not pops. 479f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class iterator; 480f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 481f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the innermost EH scope. 482f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator begin() const; 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 484f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Returns an iterator pointing to the outermost EH scope. 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator end() const; 486f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 487f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the top of the EH stack. The 488f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// returned reference is valid until that scope is popped off the 489f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// stack. 490f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stable_begin() const { 491f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(EndOfBuffer - StartOfData); 492f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 493f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 494f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Create a stable reference to the bottom of the EH stack. 495f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall static stable_iterator stable_end() { 496f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return stable_iterator(0); 497f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 498f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 499f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Translates an iterator into a stable_iterator. 500f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall stable_iterator stabilize(iterator it) const; 501f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 502f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Turn a stable reference to a scope depth into a unstable pointer 503f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to the EH stack. 504f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall iterator find(stable_iterator save) const; 505f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 506f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Removes the cleanup pointed to by the given stable_iterator. 507f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void removeCleanup(stable_iterator save); 508f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 509f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Add a branch fixup to the current cleanup scope. 510f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &addBranchFixup() { 511f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(hasNormalCleanups() && "adding fixup in scope without cleanups"); 512f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixups.push_back(BranchFixup()); 513f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups.back(); 514f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 515f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 516f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall unsigned getNumBranchFixups() const { return BranchFixups.size(); } 517f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BranchFixup &getBranchFixup(unsigned I) { 518f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall assert(I < getNumBranchFixups()); 519f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return BranchFixups[I]; 520f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 521f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 522ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Pops lazily-removed fixups from the end of the list. This 523ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// should only be called by procedures which have just popped a 524ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// cleanup or resolved one or more fixups. 525ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void popNullFixups(); 526ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 527ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// Clears the branch-fixups list. This should only be called by 5288abdbd8118e37e759d1ce3f5814ee0a24b1589e8John McCall /// ResolveAllBranchFixups. 529ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void clearFixups() { BranchFixups.clear(); } 530f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall}; 531f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CodeGenFunction - This class organizes the per-function state that is used 5335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// while generating LLVM code. 5345936e33bf74dd6bf126ceee0f6169a2593d03a69John McCallclass CodeGenFunction : public CodeGenTypeCache { 5358a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson CodeGenFunction(const CodeGenFunction&); // DO NOT IMPLEMENT 5368a219ceda2b5afd447e7199b9c53079bead31b89Anders Carlsson void operator=(const CodeGenFunction&); // DO NOT IMPLEMENT 5374c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall 5384c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall friend class CGCXXABI; 539bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattnerpublic: 540ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// A jump destination is an abstract label, branching to which may 541ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// require a jump out through normal cleanups. 542f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall struct JumpDest { 543ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest() : Block(0), ScopeDepth(), Index(0) {} 544ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest(llvm::BasicBlock *Block, 545ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator Depth, 546ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index) 547ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall : Block(Block), ScopeDepth(Depth), Index(Index) {} 548ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 549ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall bool isValid() const { return Block != 0; } 550ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::BasicBlock *getBlock() const { return Block; } 551ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; } 552ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned getDestIndex() const { return Index; } 5539cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 554ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall private: 555f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *Block; 556f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator ScopeDepth; 557ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned Index; 558ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall }; 559ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 5605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CodeGenModule &CGM; // Per-module state. 561444be7366d0a1e172c0290a1ea54c1cb16b5947cDaniel Dunbar const TargetInfo &Target; 5620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 56358dee10ed2eee34035f62d1c2d32b3639e9182f8Chris Lattner typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy; 56445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 5650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 566b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurFuncDecl - Holds the Decl for the current function or ObjC method. 567b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// This excludes BlockDecls. 5684111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner const Decl *CurFuncDecl; 569b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner /// CurCodeDecl - This is the inner-most code context, which includes blocks. 570b5437d238752dc297e42410e98d38d5250fe0463Chris Lattner const Decl *CurCodeDecl; 57188b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar const CGFunctionInfo *CurFnInfo; 572391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner QualType FnRetTy; 5735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Function *CurFn; 5745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5756a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump /// CurGD - The GlobalDecl for the current function being compiled. 5766a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump GlobalDecl CurGD; 5776a1e0eb557d47e85185e09bdf8721f53f4bf9c9cMike Stump 578f85e193739c953358c865005855253af4f68a497John McCall /// PrologueCleanupDepth - The cleanup depth enclosing all the 579f85e193739c953358c865005855253af4f68a497John McCall /// cleanups associated with the parameters. 580f85e193739c953358c865005855253af4f68a497John McCall EHScopeStack::stable_iterator PrologueCleanupDepth; 581f85e193739c953358c865005855253af4f68a497John McCall 5825ca2084cf9b529563209429857f01fdae9dcdfa5Daniel Dunbar /// ReturnBlock - Unified return block. 583f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ReturnBlock; 584f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 5850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ReturnValue - The temporary alloca to hold the return value. This is null 5860dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// iff the function has no return value. 587b17daf9ab790ae71aacad2cc4aa11cd8d86c25d1Eli Friedman llvm::Value *ReturnValue; 5880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 5895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AllocaInsertPoint - This is an instruction in the entry block before which 5905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// we prefer to insert allocas. 591481769b5dc102b0256b35581e787909ad5edfab5Chris Lattner llvm::AssertingVH<llvm::Instruction> AllocaInsertPt; 5920ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 593b3198a841e7f356f171f1e11faff014b2deb1eb8Nuno Lopes /// BoundsChecking - Emit run-time bounds checks. Higher values mean 594b3198a841e7f356f171f1e11faff014b2deb1eb8Nuno Lopes /// potentially higher performance penalties. 595b3198a841e7f356f171f1e11faff014b2deb1eb8Nuno Lopes unsigned char BoundsChecking; 596b3198a841e7f356f171f1e11faff014b2deb1eb8Nuno Lopes 597b3198a841e7f356f171f1e11faff014b2deb1eb8Nuno Lopes /// CatchUndefined - Emit run-time checks to catch undefined behaviors. 5989c276ae0f24d4cee8f7954069d4b8eae45d0447dMike Stump bool CatchUndefined; 5999cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 600f85e193739c953358c865005855253af4f68a497John McCall /// In ARC, whether we should autorelease the return value. 601f85e193739c953358c865005855253af4f68a497John McCall bool AutoreleaseResult; 602f85e193739c953358c865005855253af4f68a497John McCall 603d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall const CodeGen::CGBlockInfo *BlockInfo; 604d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *BlockPointer; 605d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 606cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields; 607cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman FieldDecl *LambdaThisCaptureField; 608cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman 6093d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// \brief A mapping from NRVO variables to the flags used to indicate 6103d91bbcdab155181556969cad6ec97014405acedDouglas Gregor /// when the NRVO has been applied to this variable. 6113d91bbcdab155181556969cad6ec97014405acedDouglas Gregor llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags; 6129cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 613f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack EHStack; 6140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 615ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall /// i32s containing the indexes of the cleanup destinations. 616ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::AllocaInst *NormalCleanupDest; 617ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 618ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall unsigned NextCleanupDestIndex; 619ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 6201a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall /// FirstBlockInfo - The head of a singly-linked-list of block layouts. 6211a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall CGBlockInfo *FirstBlockInfo; 6221a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall 623777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// EHResumeBlock - Unified block containing a call to llvm.eh.resume. 624777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall llvm::BasicBlock *EHResumeBlock; 625777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall 626285cfd8953d4ca4da613a47a0d691f7234068f8cBill Wendling /// The exception slot. All landing pads write the current exception pointer 627285cfd8953d4ca4da613a47a0d691f7234068f8cBill Wendling /// into this alloca. 628f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *ExceptionSlot; 6290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 630285cfd8953d4ca4da613a47a0d691f7234068f8cBill Wendling /// The selector slot. Under the MandatoryCleanup model, all landing pads 631285cfd8953d4ca4da613a47a0d691f7234068f8cBill Wendling /// write the current selector value into this alloca. 63293c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::AllocaInst *EHSelectorSlot; 63393c332a8ba2c193c435b293966d343dab15f555bJohn McCall 634f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// Emits a landing pad for the current EH stack. 635f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *EmitLandingPad(); 6360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 637f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDestImpl(); 63899533834ba8f3658559f334e68a518ebb6388ceaMike Stump 639150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T> 640804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<T>::saved_type saveValueInCond(T value) { 641804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return DominatingValue<T>::save(*this, value); 642150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 643150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 644f1549f66a8216a78112286e3978cea2c29d6334cJohn McCallpublic: 645f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// ObjCEHValueStack - Stack of Objective-C exception values, used for 646f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// rethrows. 647686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<llvm::Value*, 8> ObjCEHValueStack; 648bb66f9f2e454135b86462d121629275b6ac38e96Anders Carlsson 649d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// A class controlling the emission of a finally block. 650d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall class FinallyInfo { 651d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// Where the catchall's edge through the cleanup should go. 652d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall JumpDest RethrowDest; 653d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 654d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// A function to call to enter the catch. 655d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *BeginCatchFn; 656d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 657d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// An i1 variable indicating whether or not the @finally is 658d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// running for an exception. 659d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::AllocaInst *ForEHVar; 660d88ea5687968640ada2bc5a10211cbeb68a671ecMike Stump 661d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// An i8* variable into which the exception pointer to rethrow 662d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall /// has been saved. 663d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::AllocaInst *SavedExnVar; 664d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall 665d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall public: 666d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall void enter(CodeGenFunction &CGF, const Stmt *Finally, 667d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn, 668d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall llvm::Constant *rethrowFn); 669d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall void exit(CodeGenFunction &CGF); 670d768e9d29abe1ac1ccc3ed63f2dce835d9bab342John McCall }; 671f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 672150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 673150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// current full-expression. Safe against the possibility that 674150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// we're currently inside a conditionally-evaluated expression. 6753ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall template <class T, class A0> 6763ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0) { 6773ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // If we're not in a conditional branch, or if none of the 6783ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall // arguments requires saving, then use the unconditional cleanup. 679c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall if (!isInConditionalBranch()) 680c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall return EHStack.pushCleanup<T>(kind, a0); 6813ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 682804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 6833ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6843ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall typedef EHScopeStack::ConditionalCleanup1<T, A0> CleanupType; 6853ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved); 6863ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 6873ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall } 6883ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall 6893ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 6903ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// current full-expression. Safe against the possibility that 6913ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall /// we're currently inside a conditionally-evaluated expression. 692150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall template <class T, class A0, class A1> 693150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1) { 694150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If we're not in a conditional branch, or if none of the 695150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // arguments requires saving, then use the unconditional cleanup. 696c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall if (!isInConditionalBranch()) 697c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall return EHStack.pushCleanup<T>(kind, a0, a1); 698150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 699804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 700804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 701150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 702150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef EHScopeStack::ConditionalCleanup2<T, A0, A1> CleanupType; 7033ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved); 7043ad32c8d93eb65d1d4943d7df567fc9b4f55d137John McCall initFullExprCleanup(); 705150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 706150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 707d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor /// pushFullExprCleanup - Push a cleanup to be run at the end of the 708d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor /// current full-expression. Safe against the possibility that 709d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor /// we're currently inside a conditionally-evaluated expression. 710d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor template <class T, class A0, class A1, class A2> 711d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2) { 712d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // If we're not in a conditional branch, or if none of the 713d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // arguments requires saving, then use the unconditional cleanup. 714d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor if (!isInConditionalBranch()) { 715c4a1a8450a3613ef256a71b9d8305b41f79eef50John McCall return EHStack.pushCleanup<T>(kind, a0, a1, a2); 716d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor } 717d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 718d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 719d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 720d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); 721d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 722d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor typedef EHScopeStack::ConditionalCleanup3<T, A0, A1, A2> CleanupType; 723d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, a2_saved); 724d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor initFullExprCleanup(); 725d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor } 726d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 7279928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall /// pushFullExprCleanup - Push a cleanup to be run at the end of the 7289928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall /// current full-expression. Safe against the possibility that 7299928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall /// we're currently inside a conditionally-evaluated expression. 7309928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall template <class T, class A0, class A1, class A2, class A3> 7319928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall void pushFullExprCleanup(CleanupKind kind, A0 a0, A1 a1, A2 a2, A3 a3) { 7329928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // If we're not in a conditional branch, or if none of the 7339928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall // arguments requires saving, then use the unconditional cleanup. 7349928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall if (!isInConditionalBranch()) { 7359928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall return EHStack.pushCleanup<T>(kind, a0, a1, a2, a3); 7369928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 7379928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7389928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A0>::saved_type a0_saved = saveValueInCond(a0); 7399928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A1>::saved_type a1_saved = saveValueInCond(a1); 7409928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A2>::saved_type a2_saved = saveValueInCond(a2); 7419928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typename DominatingValue<A3>::saved_type a3_saved = saveValueInCond(a3); 7429928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7439928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall typedef EHScopeStack::ConditionalCleanup4<T, A0, A1, A2, A3> CleanupType; 7449928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall EHStack.pushCleanup<CleanupType>(kind, a0_saved, a1_saved, 7459928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall a2_saved, a3_saved); 7469928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall initFullExprCleanup(); 7479928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 7489928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 7496f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// Set up the last cleaup that was pushed as a conditional 7506f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// full-expression cleanup. 7516f103ba42cb69d50005a977c5ea583984ab63fc4John McCall void initFullExprCleanup(); 7526f103ba42cb69d50005a977c5ea583984ab63fc4John McCall 753f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 754f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// complete-object destructor of an object of the given type at the 755f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// given address. Does nothing if T is not a C++ class type with a 756f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// non-trivial destructor. 757f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PushDestructorCleanup(QualType T, llvm::Value *Addr); 758f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 75981407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// PushDestructorCleanup - Push a cleanup to call the 76081407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// complete-object variant of the given destructor on the object at 76181407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall /// the given address. 76281407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall void PushDestructorCleanup(const CXXDestructorDecl *Dtor, 76381407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall llvm::Value *Addr); 76481407d404a3fc8d24d0e2a052d85cae183033e2bJohn McCall 765f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlock - Will pop the cleanup entry on the stack and 766f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// process all branch fixups. 767ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void PopCleanupBlock(bool FallThroughIsBranchThrough = false); 768f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 7697d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// DeactivateCleanupBlock - Deactivates the given cleanup block. 7707d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// The block cannot be reactivated. Pops it if it's the top of the 7717d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// stack. 7726f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// 7736f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// \param DominatingIP - An instruction which is known to 7746f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// dominate the current IP (if set) and which lies along 7756f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// all paths of execution between the current IP and the 7766f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// the point at which the cleanup comes into scope. 7776f103ba42cb69d50005a977c5ea583984ab63fc4John McCall void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, 7786f103ba42cb69d50005a977c5ea583984ab63fc4John McCall llvm::Instruction *DominatingIP); 7797d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall 7807d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// ActivateCleanupBlock - Activates an initially-inactive cleanup. 7817d8647f194ae4f2499e5bcd40dcfea34cd21ebc6John McCall /// Cannot be used to resurrect a deactivated cleanup. 7826f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// 7836f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// \param DominatingIP - An instruction which is known to 7846f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// dominate the current IP (if set) and which lies along 7856f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// all paths of execution between the current IP and the 7866f103ba42cb69d50005a977c5ea583984ab63fc4John McCall /// the point at which the cleanup comes into scope. 7876f103ba42cb69d50005a977c5ea583984ab63fc4John McCall void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, 7886f103ba42cb69d50005a977c5ea583984ab63fc4John McCall llvm::Instruction *DominatingIP); 789cd2d2b7814e0104ed41a8da159a06a8ca77b70d8John McCall 790f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// \brief Enters a new scope for capturing cleanups, all of which 791f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// will be executed once the scope is exited. 792f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall class RunCleanupsScope { 793f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall EHScopeStack::stable_iterator CleanupStackDepth; 79401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor bool OldDidCallStackSave; 7955656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool PerformCleanup; 79601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 797f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope(const RunCleanupsScope &); // DO NOT IMPLEMENT 798f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall RunCleanupsScope &operator=(const RunCleanupsScope &); // DO NOT IMPLEMENT 79901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 800c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher protected: 801c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher CodeGenFunction& CGF; 802c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher 80301234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor public: 80401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Enter a new cleanup scope. 8059cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer explicit RunCleanupsScope(CodeGenFunction &CGF) 806c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher : PerformCleanup(true), CGF(CGF) 8075656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor { 808f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CleanupStackDepth = CGF.EHStack.stable_begin(); 80901234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor OldDidCallStackSave = CGF.DidCallStackSave; 8104ada2ca7d82dab68d3646f3eb6dcdfee072e8ea4Argyrios Kyrtzidis CGF.DidCallStackSave = false; 81101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 81201234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 81301234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// \brief Exit this cleanup scope, emitting any accumulated 81401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor /// cleanups. 815f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall ~RunCleanupsScope() { 8165656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor if (PerformCleanup) { 8175656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 818f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 8195656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 8205656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 8215656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 8225656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Determine whether this scope requires any cleanups. 8235656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor bool requiresCleanups() const { 824f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return CGF.EHStack.stable_begin() != CleanupStackDepth; 8255656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor } 8265656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor 8275656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// \brief Force the emission of cleanups now, instead of waiting 8285656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor /// until this object is destroyed. 8295656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor void ForceCleanup() { 8305656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor assert(PerformCleanup && "Already forced cleanup"); 83101234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor CGF.DidCallStackSave = OldDidCallStackSave; 832f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall CGF.PopCleanupBlocks(CleanupStackDepth); 8335656e14d91405417182171a705ed3e3d2d6d7aa3Douglas Gregor PerformCleanup = false; 83401234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor } 83501234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor }; 83601234bbc1cb94946df8046ad95e17537082b4f71Douglas Gregor 837c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher class LexicalScope: protected RunCleanupsScope { 838c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher SourceRange Range; 839c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher bool PopDebugStack; 840c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher 841c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher LexicalScope(const LexicalScope &); // DO NOT IMPLEMENT THESE 842c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher LexicalScope &operator=(const LexicalScope &); 843c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher 844c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher public: 845c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher /// \brief Enter a new cleanup scope. 846c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher explicit LexicalScope(CodeGenFunction &CGF, SourceRange Range) 847c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher : RunCleanupsScope(CGF), Range(Range), PopDebugStack(true) { 848c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher if (CGDebugInfo *DI = CGF.getDebugInfo()) 849c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin()); 850c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher } 851c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher 852c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher /// \brief Exit this cleanup scope, emitting any accumulated 853c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher /// cleanups. 854c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher ~LexicalScope() { 855c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher if (PopDebugStack) { 856c852e9ff06f7089405265c53af33cf06fdc36e52Eric Christopher CGDebugInfo *DI = CGF.getDebugInfo(); 857c852e9ff06f7089405265c53af33cf06fdc36e52Eric Christopher if (DI) DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd()); 858c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher } 859c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher } 860c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher 861c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher /// \brief Force the emission of cleanups now, instead of waiting 862c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher /// until this object is destroyed. 863c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher void ForceCleanup() { 864c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher RunCleanupsScope::ForceCleanup(); 865c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher if (CGDebugInfo *DI = CGF.getDebugInfo()) { 866c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd()); 867c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher PopDebugStack = false; 868c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher } 869c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher } 870c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher }; 871c3287793626a778178a4dbadcc7b64e392c6e26fEric Christopher 87244ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 873f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// PopCleanupBlocks - Takes the old cleanup stack size and emits 874f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// the cleanup blocks that have been added. 875f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize); 87644ec82b4a1597802f5bf17721481b8c265bc8dc5Anders Carlsson 877ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall void ResolveBranchFixups(llvm::BasicBlock *Target); 878ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 879f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 880f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 881f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 882ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) { 883413e67778d593215d2f2161a4e712c8568f1ddd0John McCall return JumpDest(Target, 884413e67778d593215d2f2161a4e712c8568f1ddd0John McCall EHStack.getInnermostNormalCleanup(), 885413e67778d593215d2f2161a4e712c8568f1ddd0John McCall NextCleanupDestIndex++); 886f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 887c71c845fe77ee1f891d60232ec320912d88557eeAnders Carlsson 888f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// The given basic block lies in the current EH scope, but may be a 889f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// target of a potentially scope-crossing jump; get a stable handle 890f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// to which we can perform this jump later. 891686775deca8b8685eb90801495880e3abdd844c2Chris Lattner JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) { 892ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall return getJumpDestInCurrentScope(createBasicBlock(Name)); 893f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 894f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 895f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// EmitBranchThroughCleanup - Emit a branch from the current insert 896f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// block through the normal cleanup handling code (if any) and then 897f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// on to \arg Dest. 898f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall void EmitBranchThroughCleanup(JumpDest Dest); 899b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner 900b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// isObviouslyBranchWithoutCleanups - Return true if a branch to the 901b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// specified destination obviously has no cleanups to run. 'false' is always 902b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner /// a conservatively correct answer for this method. 903b11f9198111796ada02b57f62cdea92134fde9f7Chris Lattner bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const; 904f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 905777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// popCatchScope - Pops the catch scope at the top of the EHScope 906777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// stack, emitting any required code (other than the catch handlers 907777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// themselves). 908777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall void popCatchScope(); 909ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 910777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall llvm::BasicBlock *getEHResumeBlock(); 911777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope); 9120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 913150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An object to manage conditionally-evaluated expressions. 914150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class ConditionalEvaluation { 915150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *StartBB; 9161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 917150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 918150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation(CodeGenFunction &CGF) 919150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : StartBB(CGF.Builder.GetInsertBlock()) {} 9209cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 921150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void begin(CodeGenFunction &CGF) { 922150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != this); 923150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!CGF.OutermostConditional) 924150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = this; 925150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 926150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 927150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall void end(CodeGenFunction &CGF) { 928150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall assert(CGF.OutermostConditional != 0); 929150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (CGF.OutermostConditional == this) 930150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 931150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 932150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 933150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Returns a block which will be executed prior to each 934150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// evaluation of the conditional code. 935150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *getStartingBlock() const { 936150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return StartBB; 937150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 938150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 9391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9403019c444c672938c57f5573840071ecd73425ee7John McCall /// isInConditionalBranch - Return true if we're currently emitting 9413019c444c672938c57f5573840071ecd73425ee7John McCall /// one branch or the other of a conditional expression. 942150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall bool isInConditionalBranch() const { return OutermostConditional != 0; } 943150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 9446f103ba42cb69d50005a977c5ea583984ab63fc4John McCall void setBeforeOutermostConditional(llvm::Value *value, llvm::Value *addr) { 9456f103ba42cb69d50005a977c5ea583984ab63fc4John McCall assert(isInConditionalBranch()); 9466f103ba42cb69d50005a977c5ea583984ab63fc4John McCall llvm::BasicBlock *block = OutermostConditional->getStartingBlock(); 9476f103ba42cb69d50005a977c5ea583984ab63fc4John McCall new llvm::StoreInst(value, addr, &block->back()); 9486f103ba42cb69d50005a977c5ea583984ab63fc4John McCall } 9496f103ba42cb69d50005a977c5ea583984ab63fc4John McCall 950150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// An RAII object to record that we're evaluating a statement 951150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// expression. 952150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall class StmtExprEvaluation { 953150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CodeGenFunction &CGF; 954150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 955150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// We have to save the outermost conditional: cleanups in a 956150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// statement expression aren't conditional just because the 957150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// StmtExpr is. 958150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *SavedOutermostConditional; 959150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 960150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall public: 961150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall StmtExprEvaluation(CodeGenFunction &CGF) 962150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) { 963150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = 0; 964150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 965150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 966150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ~StmtExprEvaluation() { 967150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.OutermostConditional = SavedOutermostConditional; 968150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.EnsureInsertPoint(); 969150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 970150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall }; 971e996ffd240f20a1048179d7727a6ee3227261921John McCall 97256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// An object which temporarily prevents a value from being 97356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// destroyed by aggressive peephole optimizations that assume that 97456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// all uses of a value have been realized in the IR. 97556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall class PeepholeProtection { 97656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::Instruction *Inst; 97756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall friend class CodeGenFunction; 97856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 97956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall public: 98056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection() : Inst(0) {} 9814b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 98256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 9834b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// A non-RAII class containing all the information about a bound 9844b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// opaque value. OpaqueValueMapping, below, is a RAII wrapper for 9854b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// this which makes individual mappings very simple; using this 9864b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// class directly is useful when you have a variable number of 9874b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// opaque values or don't want the RAII functionality for some 9884b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// reason. 9894b9c2d235fb9449e249d74f48ecfec601650de93John McCall class OpaqueValueMappingData { 990e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *OpaqueValue; 99156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall bool BoundLValue; 99256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall CodeGenFunction::PeepholeProtection Protection; 993e996ffd240f20a1048179d7727a6ee3227261921John McCall 9944b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueMappingData(const OpaqueValueExpr *ov, 9954b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool boundLValue) 9964b9c2d235fb9449e249d74f48ecfec601650de93John McCall : OpaqueValue(ov), BoundLValue(boundLValue) {} 997e996ffd240f20a1048179d7727a6ee3227261921John McCall public: 9984b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueMappingData() : OpaqueValue(0) {} 9994b9c2d235fb9449e249d74f48ecfec601650de93John McCall 100056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall static bool shouldBindAsLValue(const Expr *expr) { 1001a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall // gl-values should be bound as l-values for obvious reasons. 1002a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall // Records should be bound as l-values because IR generation 1003a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall // always keeps them in memory. Expressions of function type 1004a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall // act exactly like l-values but are formally required to be 1005a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall // r-values in C. 1006a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall return expr->isGLValue() || 1007a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall expr->getType()->isRecordType() || 1008a5493f885095bd63d525a7035ad1c224de3ae5f2John McCall expr->getType()->isFunctionType(); 100956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 101056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 10114b9c2d235fb9449e249d74f48ecfec601650de93John McCall static OpaqueValueMappingData bind(CodeGenFunction &CGF, 10124b9c2d235fb9449e249d74f48ecfec601650de93John McCall const OpaqueValueExpr *ov, 10134b9c2d235fb9449e249d74f48ecfec601650de93John McCall const Expr *e) { 10144b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (shouldBindAsLValue(ov)) 10154b9c2d235fb9449e249d74f48ecfec601650de93John McCall return bind(CGF, ov, CGF.EmitLValue(e)); 10164b9c2d235fb9449e249d74f48ecfec601650de93John McCall return bind(CGF, ov, CGF.EmitAnyExpr(e)); 10174b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10184b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10194b9c2d235fb9449e249d74f48ecfec601650de93John McCall static OpaqueValueMappingData bind(CodeGenFunction &CGF, 10204b9c2d235fb9449e249d74f48ecfec601650de93John McCall const OpaqueValueExpr *ov, 10214b9c2d235fb9449e249d74f48ecfec601650de93John McCall const LValue &lv) { 10224b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(shouldBindAsLValue(ov)); 10234b9c2d235fb9449e249d74f48ecfec601650de93John McCall CGF.OpaqueLValues.insert(std::make_pair(ov, lv)); 10244b9c2d235fb9449e249d74f48ecfec601650de93John McCall return OpaqueValueMappingData(ov, true); 10254b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10264b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10274b9c2d235fb9449e249d74f48ecfec601650de93John McCall static OpaqueValueMappingData bind(CodeGenFunction &CGF, 10284b9c2d235fb9449e249d74f48ecfec601650de93John McCall const OpaqueValueExpr *ov, 10294b9c2d235fb9449e249d74f48ecfec601650de93John McCall const RValue &rv) { 10304b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(!shouldBindAsLValue(ov)); 10314b9c2d235fb9449e249d74f48ecfec601650de93John McCall CGF.OpaqueRValues.insert(std::make_pair(ov, rv)); 10324b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10334b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueMappingData data(ov, false); 10344b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10354b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Work around an extremely aggressive peephole optimization in 10364b9c2d235fb9449e249d74f48ecfec601650de93John McCall // EmitScalarConversion which assumes that all other uses of a 10374b9c2d235fb9449e249d74f48ecfec601650de93John McCall // value are extant. 10384b9c2d235fb9449e249d74f48ecfec601650de93John McCall data.Protection = CGF.protectFromPeepholes(rv); 10394b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10404b9c2d235fb9449e249d74f48ecfec601650de93John McCall return data; 10414b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10424b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10434b9c2d235fb9449e249d74f48ecfec601650de93John McCall bool isValid() const { return OpaqueValue != 0; } 10444b9c2d235fb9449e249d74f48ecfec601650de93John McCall void clear() { OpaqueValue = 0; } 10454b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10464b9c2d235fb9449e249d74f48ecfec601650de93John McCall void unbind(CodeGenFunction &CGF) { 10474b9c2d235fb9449e249d74f48ecfec601650de93John McCall assert(OpaqueValue && "no data to unbind!"); 10484b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10494b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (BoundLValue) { 10504b9c2d235fb9449e249d74f48ecfec601650de93John McCall CGF.OpaqueLValues.erase(OpaqueValue); 10514b9c2d235fb9449e249d74f48ecfec601650de93John McCall } else { 10524b9c2d235fb9449e249d74f48ecfec601650de93John McCall CGF.OpaqueRValues.erase(OpaqueValue); 10534b9c2d235fb9449e249d74f48ecfec601650de93John McCall CGF.unprotectFromPeepholes(Protection); 10544b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10554b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10564b9c2d235fb9449e249d74f48ecfec601650de93John McCall }; 10574b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10584b9c2d235fb9449e249d74f48ecfec601650de93John McCall /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr. 10594b9c2d235fb9449e249d74f48ecfec601650de93John McCall class OpaqueValueMapping { 10604b9c2d235fb9449e249d74f48ecfec601650de93John McCall CodeGenFunction &CGF; 10614b9c2d235fb9449e249d74f48ecfec601650de93John McCall OpaqueValueMappingData Data; 10624b9c2d235fb9449e249d74f48ecfec601650de93John McCall 10634b9c2d235fb9449e249d74f48ecfec601650de93John McCall public: 10644b9c2d235fb9449e249d74f48ecfec601650de93John McCall static bool shouldBindAsLValue(const Expr *expr) { 10654b9c2d235fb9449e249d74f48ecfec601650de93John McCall return OpaqueValueMappingData::shouldBindAsLValue(expr); 10664b9c2d235fb9449e249d74f48ecfec601650de93John McCall } 10674b9c2d235fb9449e249d74f48ecfec601650de93John McCall 106856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Build the opaque value mapping for the given conditional 106956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// operator if it's the GNU ?: extension. This is a common 107056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// enough pattern that the convenience operator is really 107156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// helpful. 107256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 107356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 107456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const AbstractConditionalOperator *op) : CGF(CGF) { 10754b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (isa<ConditionalOperator>(op)) 10764b9c2d235fb9449e249d74f48ecfec601650de93John McCall // Leave Data empty. 107756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return; 107856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 107956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op); 10804b9c2d235fb9449e249d74f48ecfec601650de93John McCall Data = OpaqueValueMappingData::bind(CGF, e->getOpaqueValue(), 10814b9c2d235fb9449e249d74f48ecfec601650de93John McCall e->getCommon()); 108256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 108356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 1084e996ffd240f20a1048179d7727a6ee3227261921John McCall OpaqueValueMapping(CodeGenFunction &CGF, 1085e996ffd240f20a1048179d7727a6ee3227261921John McCall const OpaqueValueExpr *opaqueValue, 108656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue lvalue) 10874b9c2d235fb9449e249d74f48ecfec601650de93John McCall : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) { 108856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 108956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 109056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall OpaqueValueMapping(CodeGenFunction &CGF, 109156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const OpaqueValueExpr *opaqueValue, 109256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall RValue rvalue) 10934b9c2d235fb9449e249d74f48ecfec601650de93John McCall : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) { 1094e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1095e996ffd240f20a1048179d7727a6ee3227261921John McCall 1096e996ffd240f20a1048179d7727a6ee3227261921John McCall void pop() { 10974b9c2d235fb9449e249d74f48ecfec601650de93John McCall Data.unbind(CGF); 10984b9c2d235fb9449e249d74f48ecfec601650de93John McCall Data.clear(); 1099e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1100e996ffd240f20a1048179d7727a6ee3227261921John McCall 1101e996ffd240f20a1048179d7727a6ee3227261921John McCall ~OpaqueValueMapping() { 11024b9c2d235fb9449e249d74f48ecfec601650de93John McCall if (Data.isValid()) Data.unbind(CGF); 1103e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1104e996ffd240f20a1048179d7727a6ee3227261921John McCall }; 1105e220455a059d926953befe72857b9525273717efFariborz Jahanian 1106e220455a059d926953befe72857b9525273717efFariborz Jahanian /// getByrefValueFieldNumber - Given a declaration, returns the LLVM field 1107e220455a059d926953befe72857b9525273717efFariborz Jahanian /// number that holds the value. 1108e220455a059d926953befe72857b9525273717efFariborz Jahanian unsigned getByRefValueLLVMField(const ValueDecl *VD) const; 110952a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian 111052a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// BuildBlockByrefAddress - Computes address location of the 111152a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian /// variable which is declared as __block. 111252a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian llvm::Value *BuildBlockByrefAddress(llvm::Value *BaseAddr, 111352a80e19ad688091723a52ad53337767bb0ac684Fariborz Jahanian const VarDecl *V); 11147f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattnerprivate: 1115d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner CGDebugInfo *DebugInfo; 1116aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel bool DisableDebugInfo; 111709429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 111893c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid 111993c332a8ba2c193c435b293966d343dab15f555bJohn McCall /// calling llvm.stacksave for multiple VLAs in the same scope. 112093c332a8ba2c193c435b293966d343dab15f555bJohn McCall bool DidCallStackSave; 112193c332a8ba2c193c435b293966d343dab15f555bJohn McCall 1122f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// IndirectBranch - The first time an indirect goto is seen we create a block 1123f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// with an indirect branch. Every time we see the address of a label taken, 1124f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// we add the label to the indirect goto. Every subsequent indirect goto is 1125f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// codegen'd as a jump to the IndirectBranch's basic block. 1126d9becd1846e2c72bf6ad283faa1b048f33dd3afeChris Lattner llvm::IndirectBrInst *IndirectBranch; 11270ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 11280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C 11290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// decls. 11306b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall typedef llvm::DenseMap<const Decl*, llvm::Value*> DeclMapTy; 11316b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall DeclMapTy LocalDeclMap; 11325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LabelMap - This keeps track of the LLVM basic block for each C label. 1134ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap; 11350dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 11360dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // BreakContinueStack - This keeps track of where break and continue 1137e4b6d342c29d5cb9d311756100df1603810fa892Anders Carlsson // statements should jump to. 1138da13870e99fe33934b2122f06528a5063f78ae4cChris Lattner struct BreakContinue { 1139f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall BreakContinue(JumpDest Break, JumpDest Continue) 1140f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall : BreakBlock(Break), ContinueBlock(Continue) {} 11410dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1142f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest BreakBlock; 1143f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall JumpDest ContinueBlock; 11440dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump }; 1145686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<BreakContinue, 8> BreakContinueStack; 114618ccc7776ad6288c5f630dc7967fb99d099c9cd9Daniel Dunbar 1147170fd49294b85ab10f820721d99ff9d109c7230dZhongxing Xu /// SwitchInsn - This is nearest current switch instruction. It is null if 11480dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// current context is not in a switch. 114951b09f2c528c8460b5465c676173324e44176d62Devang Patel llvm::SwitchInst *SwitchInsn; 115051b09f2c528c8460b5465c676173324e44176d62Devang Patel 11510dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// CaseRangeBlock - This block holds if condition check for last case 115280fd5f96e6805ac43aab99faabd5b4c8b19551b7Devang Patel /// statement range in current switch instruction. 1153c049e4f406a7f7179eba98659044a32508e53289Devang Patel llvm::BasicBlock *CaseRangeBlock; 1154c049e4f406a7f7179eba98659044a32508e53289Devang Patel 115556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// OpaqueLValues - Keeps track of the current set of opaque value 1156e996ffd240f20a1048179d7727a6ee3227261921John McCall /// expressions. 115756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues; 115856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues; 1159e996ffd240f20a1048179d7727a6ee3227261921John McCall 11600dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // VLASizeMap - This keeps track of the associated size for each VLA type. 1161bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // We track this by the size expression rather than the type itself because 1162bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // in certain situations, like a const qualifier applied to an VLA typedef, 1163bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman // multiple VLA types can share the same size expression. 11640dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // FIXME: Maybe this could be a stack of maps that is pushed/popped as we 11650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // enter/leave scopes. 1166bbed6b964414145b29e7b60b3e538093734ea3f8Eli Friedman llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap; 11670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1168f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// A block containing a single 'unreachable' instruction. Created 1169f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// lazily by getUnreachableBlock(). 1170f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *UnreachableBlock; 11710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1172f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXThisDecl - When generating code for a C++ member function, 1173f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// this will hold the implicit 'this' declaration. 1174cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman ImplicitParamDecl *CXXABIThisDecl; 1175cec5ebd4a6a89a7023d04cec728fd340b541ed61Eli Friedman llvm::Value *CXXABIThisValue; 11762504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXThisValue; 11771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1178f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// CXXVTTDecl - When generating code for a base object constructor or 1179f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// base object destructor with virtual bases, this will hold the implicit 1180f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson /// VTT parameter. 1181f6c56e2323c3f973253805a2f35629f3253ebed4Anders Carlsson ImplicitParamDecl *CXXVTTDecl; 11822504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *CXXVTTValue; 11839cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1184150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// OutermostConditional - Points to the outermost active 1185150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// conditional control. This is used so that we know if a 1186150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// temporary should be destroyed conditionally. 1187150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall ConditionalEvaluation *OutermostConditional; 11881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11897dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson 11907dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// ByrefValueInfoMap - For each __block variable, contains a pair of the LLVM 11917dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson /// type as well as the field number that contains the actual data. 11922acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::DenseMap<const ValueDecl *, std::pair<llvm::Type *, 11937dfa4079f4b37507048b19bfc693d3b015d9dd11Anders Carlsson unsigned> > ByRefValueInfo; 11949cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1195f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *TerminateLandingPad; 1196182f383db1782af752ecaf607fdff72a8542088bMike Stump llvm::BasicBlock *TerminateHandler; 119783252dcfe61aaebcb6bc117e71dc12968729513fChris Lattner llvm::BasicBlock *TrapBB; 1198940670512d7c3d93389bb38a426abcb7ef44271eEli Friedman 11990df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// Add a kernel metadata node to the named metadata node 'opencl.kernels'. 12000df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// In the kernel metadata node, reference the kernel function and metadata 12010df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// nodes for its optional attribute qualifiers (OpenCL 1.1 6.7.2): 12020df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// - A node for the work_group_size_hint(X,Y,Z) qualifier contains string 12030df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// "work_group_size_hint", and three 32-bit integers X, Y and Z. 12040df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// - A node for the reqd_work_group_size(X,Y,Z) qualifier contains string 12050df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner /// "reqd_work_group_size", and three 32-bit integers X, Y and Z. 12060df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner void EmitOpenCLKernelMetadata(const FunctionDecl *FD, 12070df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner llvm::Function *Fn); 12080df579ec000ffe52e0cddf1e7ee5e50a55256835Tanya Lattner 12095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 12104904bf4e84cfb48080270ebaa9005327f18ab0e5Fariborz Jahanian CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false); 12111a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall ~CodeGenFunction(); 12120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 12131e7fe751466ea82665fd21e9162fd7cc9c5f412dJohn McCall CodeGenTypes &getTypes() const { return CGM.getTypes(); } 1214f2aac84709c418189e476ad591848dad50291885John McCall ASTContext &getContext() const { return CGM.getContext(); } 1215aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel CGDebugInfo *getDebugInfo() { 1216aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel if (DisableDebugInfo) 1217aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return NULL; 1218aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel return DebugInfo; 1219aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel } 1220aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void disableDebugInfo() { DisableDebugInfo = true; } 1221aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel void enableDebugInfo() { DisableDebugInfo = false; } 1222aa11289f754d220c9c155b68a4f84cdcfcefef6aDevang Patel 1223f85e193739c953358c865005855253af4f68a497John McCall bool shouldUseFusedARCCalls() { 1224f85e193739c953358c865005855253af4f68a497John McCall return CGM.getCodeGenOpts().OptimizationLevel == 0; 1225f85e193739c953358c865005855253af4f68a497John McCall } 12265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12274e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &getLangOpts() const { return CGM.getLangOpts(); } 1228d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1229285cfd8953d4ca4da613a47a0d691f7234068f8cBill Wendling /// Returns a pointer to the function's exception object and selector slot, 1230285cfd8953d4ca4da613a47a0d691f7234068f8cBill Wendling /// which is assigned in every landing pad. 1231f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *getExceptionSlot(); 123293c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Value *getEHSelectorSlot(); 1233f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1234ae270598d5c7a9a283d4b3ddce53b151c6e2b182Bill Wendling /// Returns the contents of the function's exception object and selector 1235ae270598d5c7a9a283d4b3ddce53b151c6e2b182Bill Wendling /// slots. 1236ae270598d5c7a9a283d4b3ddce53b151c6e2b182Bill Wendling llvm::Value *getExceptionFromSlot(); 1237ae270598d5c7a9a283d4b3ddce53b151c6e2b182Bill Wendling llvm::Value *getSelectorFromSlot(); 1238ae270598d5c7a9a283d4b3ddce53b151c6e2b182Bill Wendling 1239ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall llvm::Value *getNormalCleanupDestSlot(); 1240ff8e11579fc904aa4032d90d2be6ce1ac5fc9fe1John McCall 1241f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getUnreachableBlock() { 1242f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!UnreachableBlock) { 1243f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall UnreachableBlock = createBasicBlock("unreachable"); 1244f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock); 1245f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1246f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return UnreachableBlock; 1247f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 1248f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1249f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getInvokeDest() { 1250f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall if (!EHStack.requiresLandingPad()) return 0; 1251f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall return getInvokeDestImpl(); 1252f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall } 12539834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1254d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); } 125569243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson 12569834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 1257bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall // Cleanups 1258bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall //===--------------------------------------------------------------------===// 1259bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1260bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall typedef void Destroyer(CodeGenFunction &CGF, llvm::Value *addr, QualType ty); 1261bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 12622673c68aa58e277ebc755b71d81aca618cdedbf9John McCall void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, 12632673c68aa58e277ebc755b71d81aca618cdedbf9John McCall llvm::Value *arrayEndPointer, 12642673c68aa58e277ebc755b71d81aca618cdedbf9John McCall QualType elementType, 1265516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne Destroyer *destroyer); 12662673c68aa58e277ebc755b71d81aca618cdedbf9John McCall void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, 12672673c68aa58e277ebc755b71d81aca618cdedbf9John McCall llvm::Value *arrayEnd, 12682673c68aa58e277ebc755b71d81aca618cdedbf9John McCall QualType elementType, 1269516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne Destroyer *destroyer); 1270bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 12719928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall void pushDestroy(QualType::DestructionKind dtorKind, 12729928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall llvm::Value *addr, QualType type); 1273bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall void pushDestroy(CleanupKind kind, llvm::Value *addr, QualType type, 1274516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne Destroyer *destroyer, bool useEHCleanupForArray); 1275516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne void emitDestroy(llvm::Value *addr, QualType type, Destroyer *destroyer, 12762673c68aa58e277ebc755b71d81aca618cdedbf9John McCall bool useEHCleanupForArray); 1277a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall llvm::Function *generateDestroyHelper(llvm::Constant *addr, 1278a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall QualType type, 1279516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne Destroyer *destroyer, 1280a91f6661c4685fecee6dc09bdaef73254c1aaa06John McCall bool useEHCleanupForArray); 1281bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall void emitArrayDestroy(llvm::Value *begin, llvm::Value *end, 1282516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne QualType type, Destroyer *destroyer, 1283fbf780a9d1dbb191fc40c8af967c590e08724b74John McCall bool checkZeroLength, bool useEHCleanup); 1284bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1285516bbd42e62d709013824d6fb8445a0cfda3129aPeter Collingbourne Destroyer *getDestroyer(QualType::DestructionKind destructionKind); 12869928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 1287bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// Determines whether an EH cleanup is required to destroy a type 1288bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// with the given destruction kind. 1289bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall bool needsEHCleanup(QualType::DestructionKind kind) { 1290bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall switch (kind) { 1291bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_none: 1292bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall return false; 1293bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_cxx_destructor: 1294bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_objc_weak_lifetime: 12954e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return getLangOpts().Exceptions; 1296bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall case QualType::DK_objc_strong_lifetime: 12974e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return getLangOpts().Exceptions && 1298bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall CGM.getCodeGenOpts().ObjCAutoRefCountExceptions; 1299bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall } 1300bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm_unreachable("bad destruction kind"); 1301bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall } 1302bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 13039928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall CleanupKind getCleanupKind(QualType::DestructionKind kind) { 13049928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup); 13059928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall } 13069928c4805aa8d5fabd488d0d0c5aeb64fd50f0e3John McCall 1307bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall //===--------------------------------------------------------------------===// 13089834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar // Objective-C 13099834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar //===--------------------------------------------------------------------===// 13109834ffbe54788239c8361d3cfe5826fd277ddfb2Daniel Dunbar 1311391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner void GenerateObjCMethod(const ObjCMethodDecl *OMD); 1312af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 13130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void StartObjCMethod(const ObjCMethodDecl *MD, 13148d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel const ObjCContainerDecl *CD, 13158d3f8979e46f9d0b8735566eabe471db0e1e0e53Devang Patel SourceLocation StartLoc); 1316af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 13170dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCGetter - Synthesize an Objective-C property getter function. 1318fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCGetter(ObjCImplementationDecl *IMP, 1319fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 13201e1f4871535f2cadcbf8c9af8cc48a2213192320John McCall void generateObjCGetterBody(const ObjCImplementationDecl *classImpl, 1321b6e5fe3cae9bf456f084c555c3ecc256f4181cc5Fariborz Jahanian const ObjCPropertyImplDecl *propImpl, 1322490a52b4947381879a47b4251db5fb81cdf5d02bFariborz Jahanian const ObjCMethodDecl *GetterMothodDecl, 1323b6e5fe3cae9bf456f084c555c3ecc256f4181cc5Fariborz Jahanian llvm::Constant *AtomicHelperFn); 13242846b97965e980ad2e7c8d444b82cc21d733a699Fariborz Jahanian 1325109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP, 1326109dfc6ca6652f60c55ed0f2631aebf323d0200dFariborz Jahanian ObjCMethodDecl *MD, bool ctor); 1327af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 13280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// GenerateObjCSetter - Synthesize an Objective-C property setter function 13290dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// for the given property. 1330fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian void GenerateObjCSetter(ObjCImplementationDecl *IMP, 1331fef30b55230064d334a669a065a1c9acdb87cdfeFariborz Jahanian const ObjCPropertyImplDecl *PID); 133271c758d3f4ecc8b511e6ae4a7210486aa994c182John McCall void generateObjCSetterBody(const ObjCImplementationDecl *classImpl, 1333cd93b96bc51c255d104095bc6a6d8eac74a84b1eFariborz Jahanian const ObjCPropertyImplDecl *propImpl, 1334cd93b96bc51c255d104095bc6a6d8eac74a84b1eFariborz Jahanian llvm::Constant *AtomicHelperFn); 13350b2bd47151ee9205ad6c66d1ffb921918106088aFariborz Jahanian bool IndirectObjCSetterArg(const CGFunctionInfo &FI); 133615bd58842adaa4f8cca4e58047ed18e033858d9bFariborz Jahanian bool IvarTypeWithAggrGCObjects(QualType Ty); 1337af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar 13384e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 13394e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump // Block Bits 13404e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump //===--------------------------------------------------------------------===// 13414e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 13426b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *EmitBlockLiteral(const BlockExpr *); 13431a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall llvm::Value *EmitBlockLiteral(const CGBlockInfo &Info); 13441a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall static void destroyBlockInfos(CGBlockInfo *info); 13452a7eb28397148079cbc8e54e8a3871ef01c4f4bcBlaine Garst llvm::Constant *BuildDescriptorBlockDecl(const BlockExpr *, 134689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian const CGBlockInfo &Info, 13472acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *, 1348d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *BlockVarLayout); 13494e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1350564360be450b319aeafc26698be9811837bfb826Fariborz Jahanian llvm::Function *GenerateBlockFunction(GlobalDecl GD, 13516b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &Info, 13526cc88f78fd36d3511b89412b193494b3e423cbffMike Stump const Decl *OuterFuncDecl, 135364bee65a3436e3f0c352fcfe2130676f3502cffeEli Friedman const DeclMapTy &ldm, 135464bee65a3436e3f0c352fcfe2130676f3502cffeEli Friedman bool IsLambdaConversionToBlock); 13554e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1356d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo); 1357d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo); 135820abee6b95c4f5a61e471b4b616439280ca4a81bFariborz Jahanian llvm::Constant *GenerateObjCAtomicSetterCopyHelperFunction( 135920abee6b95c4f5a61e471b4b616439280ca4a81bFariborz Jahanian const ObjCPropertyImplDecl *PID); 136020abee6b95c4f5a61e471b4b616439280ca4a81bFariborz Jahanian llvm::Constant *GenerateObjCAtomicGetterCopyHelperFunction( 136120abee6b95c4f5a61e471b4b616439280ca4a81bFariborz Jahanian const ObjCPropertyImplDecl *PID); 1362cae40c4d448529fe65de3d87bdbe97d3b54b4d98Eli Friedman llvm::Value *EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty); 1363d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 1364d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags); 1365d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 13665af02db5a48476e0748f135369663080eae87c64John McCall class AutoVarEmission; 13675af02db5a48476e0748f135369663080eae87c64John McCall 13685af02db5a48476e0748f135369663080eae87c64John McCall void emitByrefStructureInit(const AutoVarEmission &emission); 13695af02db5a48476e0748f135369663080eae87c64John McCall void enterByrefCleanup(const AutoVarEmission &emission); 13705af02db5a48476e0748f135369663080eae87c64John McCall 13716b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *LoadBlockStruct() { 13726b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall assert(BlockPointer && "no block pointer set!"); 13736b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall return BlockPointer; 13746b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall } 13754e7a1f7682d94811bd41fca8aefccc38f686db23Mike Stump 1376ea1471e0e967548c596a71469702f8846dbaf3c0John McCall void AllocateBlockCXXThisPointer(const CXXThisExpr *E); 1377f4b88a45902af1802a1cb42ba48b1c474474f228John McCall void AllocateBlockDecl(const DeclRefExpr *E); 13786b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall llvm::Value *GetAddrOfBlockDecl(const VarDecl *var, bool ByRef); 13792acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BuildByRefType(const VarDecl *var); 1380dab514fc30242c7afd6c03956e46136c400fb0d3Mike Stump 1381d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCode(GlobalDecl GD, llvm::Function *Fn, 1382d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo); 13830ff8bafde95f6fa51ccea70738c1b99db870bddcAnders Carlsson void StartFunction(GlobalDecl GD, QualType RetTy, 13847c086516f3cc9fba2733b1919973206c6ba4b171Daniel Dunbar llvm::Function *Fn, 1385d26bc76c98006609002d9930f8840490e88ac5b5John McCall const CGFunctionInfo &FnInfo, 13862284ac9ec80299fcdefae9a2787cf85105a0f203Daniel Dunbar const FunctionArgList &Args, 13879c6082fe89c61af697f017aa80937581cc2128d8Tilmann Scheller SourceLocation StartLoc); 1388a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 13899fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitConstructorBody(FunctionArgList &Args); 13909fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitDestructorBody(FunctionArgList &Args); 13919fc6a7774643a810c8501dae2323e863fefb623eJohn McCall void EmitFunctionBody(FunctionArgList &Args); 1392a355e07454463b19829ac92ffd115a097faff0e0John McCall 139364bee65a3436e3f0c352fcfe2130676f3502cffeEli Friedman void EmitForwardingCallToLambda(const CXXRecordDecl *Lambda, 139464bee65a3436e3f0c352fcfe2130676f3502cffeEli Friedman CallArgList &CallArgs); 1395bd89f8c2caa9550e41daa1aa9bf30f0f1e0dfaf7Eli Friedman void EmitLambdaToBlockPointerBody(FunctionArgList &Args); 139664bee65a3436e3f0c352fcfe2130676f3502cffeEli Friedman void EmitLambdaBlockInvokeBody(); 139727dd7d962bbf774988bc5e59d04a7743ed503514Douglas Gregor void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD); 139827dd7d962bbf774988bc5e59d04a7743ed503514Douglas Gregor void EmitLambdaStaticInvokeFunction(const CXXMethodDecl *MD); 1399bd89f8c2caa9550e41daa1aa9bf30f0f1e0dfaf7Eli Friedman 14000dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitReturnBlock - Emit the unified return block, trying to avoid its 14010dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emission when possible. 14021c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar void EmitReturnBlock(); 14031c1d6074f5a0296dd273362655b1b8f9057289e3Daniel Dunbar 14040dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// FinishFunction - Complete IR generation of the current function. It is 14050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// legal to call this function even if there is no current insertion point. 1406af05bb9073319d8381b71c4325188853fd4b8ed6Daniel Dunbar void FinishFunction(SourceLocation EndLoc=SourceLocation()); 140717b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1408519c32880b99396034ecaedc0cd86db2e8485003Anders Carlsson /// GenerateThunk - Generate a thunk for the given method. 1409d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 1410d26bc76c98006609002d9930f8840490e88ac5b5John McCall GlobalDecl GD, const ThunkInfo &Thunk); 14119cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 14127dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman void GenerateVarArgsThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo, 14137dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman GlobalDecl GD, const ThunkInfo &Thunk); 14147dcdf5ba9324a9577461eae302e88fdd52e310c5Eli Friedman 1415fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type, 1416fb8cc253420e93cee33d29df5a2bdae6aaf16e39Douglas Gregor FunctionArgList &Args); 14171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1418b74ed087469db042325bad76fdf3ff6ed67dec09Eli Friedman void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init, 1419b74ed087469db042325bad76fdf3ff6ed67dec09Eli Friedman ArrayRef<VarDecl *> ArrayIndexes); 1420b74ed087469db042325bad76fdf3ff6ed67dec09Eli Friedman 1421d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// InitializeVTablePointer - Initialize the vtable pointer of the given 1422d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// subobject. 1423d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson /// 14249cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointer(BaseSubobject Base, 1425b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1426d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1427d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson llvm::Constant *VTable, 1428d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson const CXXRecordDecl *VTableClass); 1429d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1430d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy; 14319cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer void InitializeVTablePointers(BaseSubobject Base, 1432b3b772ea15a4cd54879e244629aa685ead9548bbAnders Carlsson const CXXRecordDecl *NearestVBase, 1433d6fb21fa1053e5d616af55b181bb03c50d4b0d24Ken Dyck CharUnits OffsetFromNearestVBase, 1434603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson bool BaseIsNonVirtualPrimaryBase, 1435603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson llvm::Constant *VTable, 1436603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson const CXXRecordDecl *VTableClass, 1437603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson VisitedVirtualBasesSetTy& VBases); 143877a259c6dbf582949af8a243b472c0c7faa373a6Eli Friedman 1439603d6d12cc4cba1ef219a3d55c698c7c87f87adfAnders Carlsson void InitializeVTablePointers(const CXXRecordDecl *ClassDecl); 1440d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 1441043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// GetVTablePtr - Return the Value of the vtable pointer member pointed 1442043fb9a1fc0609285f60f0f87e5a18195408f34cDan Gohman /// to by This. 14432acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value *GetVTablePtr(llvm::Value *This, llvm::Type *Ty); 1444d103f9f9b401b419e756f8c1849683cd77586067Anders Carlsson 144550da2cadcc6da86abff6772de65280ace2cabc94John McCall /// EnterDtorCleanups - Enter the cleanups necessary to complete the 144650da2cadcc6da86abff6772de65280ace2cabc94John McCall /// given phase of destruction for a destructor. The end result 144750da2cadcc6da86abff6772de65280ace2cabc94John McCall /// should call destructors on members and base classes in reverse 144850da2cadcc6da86abff6772de65280ace2cabc94John McCall /// order of their construction. 144950da2cadcc6da86abff6772de65280ace2cabc94John McCall void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type); 14501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14517255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// ShouldInstrumentFunction - Return true if the current function should be 14527255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumented with __cyg_profile_func_* calls 14537255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner bool ShouldInstrumentFunction(); 14547255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 14557255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// EmitFunctionInstrumentation - Emit LLVM code to call the specified 14567255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// instrumentation function with the current function and the call site, if 14577255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner /// function instrumentation is enabled. 14587255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner void EmitFunctionInstrumentation(const char *Fn); 14597255a2d997b15beae82e627052fdb1b2474495c2Chris Lattner 1460be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky /// EmitMCountInstrumentation - Emit call to .mcount. 1461be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky void EmitMCountInstrumentation(); 1462be4c8705e499b55548467eb7adaa23cbc6edfef9Roman Divacky 14630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionProlog - Emit the target specific LLVM code to load the 14640dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// arguments for the given function. This is also responsible for naming the 14650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM function arguments. 146688b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar void EmitFunctionProlog(const CGFunctionInfo &FI, 146788b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Function *Fn, 146817b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar const FunctionArgList &Args); 146917b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 14700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitFunctionEpilog - Emit the target specific LLVM code to return the 14710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// given temporary. 147235b21b884e5c3447a52a74d7ffaba966b07ac81fChris Lattner void EmitFunctionEpilog(const CGFunctionInfo &FI); 147317b708d61827cd86278e9580b041dd6cbadf07d3Daniel Dunbar 1474cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitStartEHSpec - Emit the start of the exception spec. 1475cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitStartEHSpec(const Decl *D); 1476cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1477cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump /// EmitEndEHSpec - Emit the end of the exception spec. 1478cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump void EmitEndEHSpec(const Decl *D); 1479cce3d4f9812182ed4e551b7cf0fc86576be8d9c5Mike Stump 1480f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateLandingPad - Return a landing pad that just calls terminate. 1481f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::BasicBlock *getTerminateLandingPad(); 1482f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// getTerminateHandler - Return a handler (not a landing pad, just 1484f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a catch handler) that just calls terminate. This is used when 1485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall /// a terminate scope encloses a try. 14869b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump llvm::BasicBlock *getTerminateHandler(); 14879b39c51ae3c547568ac42325f94b4197618f6b18Mike Stump 14889cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ConvertTypeForMem(QualType T); 14899cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ConvertType(QualType T); 14909cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ConvertType(const TypeDecl *T) { 1491bff225ecf77fb891596ecb1b27196310d268365eJohn McCall return ConvertType(getContext().getTypeDeclType(T)); 1492bff225ecf77fb891596ecb1b27196310d268365eJohn McCall } 1493c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner 14940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LoadObjCSelf - Load the value of self. This function is only valid while 14950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// generating code for an Objective-C method. 1496c8aa5f1f264fb230c38182adab944232bb160c2bChris Lattner llvm::Value *LoadObjCSelf(); 14970dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 14980dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// TypeOfSelfObject - Return type of object that this self represents. 149945012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian QualType TypeOfSelfObject(); 15004111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner 15015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// hasAggregateLLVMType - Return true if the specified AST type will map into 15025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an aggregate LLVM type or is void. 15035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer static bool hasAggregateLLVMType(QualType T); 150455e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar 150555e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar /// createBasicBlock - Create an LLVM basic block. 1506686775deca8b8685eb90801495880e3abdd844c2Chris Lattner llvm::BasicBlock *createBasicBlock(StringRef name = "", 1507d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Function *parent = 0, 1508d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::BasicBlock *before = 0) { 150929ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#ifdef NDEBUG 1510d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), "", parent, before); 151129ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#else 1512d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before); 151329ea6729155c759836be4b5453bee9ef8e1e97eeDaniel Dunbar#endif 151455e874299f2ad827646a4ca9ea38c402aaeb38c9Daniel Dunbar } 15150dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 15165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getBasicBlockForLabel - Return the LLVM basicblock that the specified 15175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// label maps to. 1518ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner JumpDest getJumpDestForLabel(const LabelDecl *S); 15190dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1520f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// SimplifyForwardingBlocks - If the given basic block is only a branch to 1521f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// another basic block, simplify it. This assumes that no other code could 1522f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// potentially reference the basic block. 1523aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar void SimplifyForwardingBlocks(llvm::BasicBlock *BB); 1524aa5bd87f1fd5f9ca47924248817c89325759b30eDaniel Dunbar 15250dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBlock - Emit the given block \arg BB and set it as the insert point, 15260dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// adding a fall-through branch from the current insert block if 15270dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessary. It is legal to call this function even if there is no current 15280dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 1529a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar /// 15300dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// IsFinished - If true, indicates that the caller has finished emitting 15310dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// branches to the given block and does not expect to emit code into it. This 15320dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// means the block can be ignored if it is unreachable. 1533a0c21a8faa79e88ac432d116eca58f7a7217195dDaniel Dunbar void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false); 1534824e3bd76b2e32db2ec6e4d2d113413e518d1c63Daniel Dunbar 1535777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// EmitBlockAfterUses - Emit the given block somewhere hopefully 1536777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall /// near its uses, and leave the insertion point in it. 1537777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall void EmitBlockAfterUses(llvm::BasicBlock *BB); 1538777d6e56ad9b1fed9866daf3ee6486d85c5b7d32John McCall 15390dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitBranch - Emit a branch to the specified basic block from the current 15400dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insert block, taking care to avoid creation of branches from dummy 15410dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// blocks. It is legal to call this function even if there is no current 15420dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// insertion point. 15435e08ad3cc62ab94649959ae227a9a411a729bf49Daniel Dunbar /// 15440dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function clears the current insertion point. The caller should follow 15450dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calls to this function with calls to Emit*Block prior to generation new 15460dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// code. 1547d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar void EmitBranch(llvm::BasicBlock *Block); 1548d57a871339c7c98d58d93108b806f59bdf4e13e2Daniel Dunbar 15490dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// HaveInsertPoint - True if an insertion point is defined. If not, this 15500dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// indicates that the current code being emitted is unreachable. 15510dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump bool HaveInsertPoint() const { 1552a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar return Builder.GetInsertBlock() != 0; 1553a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 1554a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 15550dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint - Ensure that an insertion point is defined so that 15560dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// emitted IR has a place to go. Note that by definition, if this function 15570dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// creates a block then that block is unreachable; callers may do better to 15580dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// detect when no insertion point is defined and simply skip IR generation. 1559a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar void EnsureInsertPoint() { 1560a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar if (!HaveInsertPoint()) 1561a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar EmitBlock(createBasicBlock()); 1562a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar } 15630dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1564488e993a135ce700b982bf099c3d6b856301d642Daniel Dunbar /// ErrorUnsupported - Print out an error that codegen doesn't support the 1565dc5e8268292046114ffe02e48773572a91a310f1Chris Lattner /// specified stmt yet. 156690df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar void ErrorUnsupported(const Stmt *S, const char *Type, 156790df4b6661968a84bf64baee489bb2f6d948fcc1Daniel Dunbar bool OmitOnError=false); 15685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 15695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 15705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Helpers 15715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 15720dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 15736da2c716017d5c8530ec99779524491ebc5dadb8Eli Friedman LValue MakeAddrLValue(llvm::Value *V, QualType T, 15746da2c716017d5c8530ec99779524491ebc5dadb8Eli Friedman CharUnits Alignment = CharUnits()) { 15753d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman return LValue::MakeAddr(V, T, Alignment, getContext(), 15763d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman CGM.getTBAAInfo(T)); 15772f77b3d57031ded0de2b7b977fb63b4660f82624Eli Friedman } 1578e0c1168ec7910a1a7ed08df4d4f0c58c2fa2ecd1John McCall 15792f77b3d57031ded0de2b7b977fb63b4660f82624Eli Friedman LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T) { 15806da2c716017d5c8530ec99779524491ebc5dadb8Eli Friedman CharUnits Alignment; 15816da2c716017d5c8530ec99779524491ebc5dadb8Eli Friedman if (!T->isIncompleteType()) 15826da2c716017d5c8530ec99779524491ebc5dadb8Eli Friedman Alignment = getContext().getTypeAlignInChars(T); 15832f77b3d57031ded0de2b7b977fb63b4660f82624Eli Friedman return LValue::MakeAddr(V, T, Alignment, getContext(), 15842f77b3d57031ded0de2b7b977fb63b4660f82624Eli Friedman CGM.getTBAAInfo(T)); 15855cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar } 15865cf8bfec711116b3c4acc70a00717b2e119e7550Daniel Dunbar 15875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CreateTempAlloca - This creates a alloca and inserts it into the entry 1588195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// block. The caller is responsible for setting an appropriate alignment on 1589195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// the alloca. 15902acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, 15918cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner const Twine &Name = "tmp"); 15920dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1593ac418162692a951ca3796d6830496a85a2d12493John McCall /// InitTempAlloca - Provide an initial value for the given alloca. 1594ac418162692a951ca3796d6830496a85a2d12493John McCall void InitTempAlloca(llvm::AllocaInst *Alloca, llvm::Value *Value); 1595ac418162692a951ca3796d6830496a85a2d12493John McCall 15969bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// CreateIRTemp - Create a temporary IR object of the given type, with 15979bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// appropriate alignment. This routine should only be used when an temporary 15989bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// value needs to be stored into an alloca (for example, to avoid explicit 15999bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// PHI construction), but the type is the IR type, not the type appropriate 16009bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar /// for storing in memory. 16018cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner llvm::AllocaInst *CreateIRTemp(QualType T, const Twine &Name = "tmp"); 16029bd4da2cfa8b956b851200db8f9a37e175edbb15Daniel Dunbar 1603195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// CreateMemTemp - Create a temporary memory object of the given type, with 1604195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar /// appropriate alignment. 16058cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner llvm::AllocaInst *CreateMemTemp(QualType T, const Twine &Name = "tmp"); 1606195337d2e5d4625ae9dc1328c7cdbc7115b0261bDaniel Dunbar 1607558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// CreateAggTemp - Create a temporary memory object for the given 1608558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// aggregate type. 16098cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") { 1610d7722d9d76a851e7897f4127626616d3b1b8e530Eli Friedman CharUnits Alignment = getContext().getTypeAlignInChars(T); 1611f394078fde147dcf27e9b6a7965517388d64dcb6Eli Friedman return AggValueSlot::forAddr(CreateMemTemp(T, Name), Alignment, 1612f394078fde147dcf27e9b6a7965517388d64dcb6Eli Friedman T.getQualifiers(), 16137c2349be2d11143a2e59a167fd43362a3bf4585eJohn McCall AggValueSlot::IsNotDestructed, 1614410ffb2bc5f072d58a73c14560345bcf77dec1ccJohn McCall AggValueSlot::DoesNotNeedGCBarriers, 1615649b4a1a9b5e6f768ca0cb84bd97b00f51083e15Chad Rosier AggValueSlot::IsNotAliased); 1616558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall } 1617558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall 1618d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall /// Emit a cast to void* in the appropriate address space. 1619d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall llvm::Value *EmitCastToVoidPtr(llvm::Value *value); 1620d16c2cf1cafa413709aa487cbbd5dc392f1ba1ffJohn McCall 16215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateExprAsBool - Perform the usual unary conversions on the specified 16225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression and compare the result against zero, returning an Int1Ty value. 16235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::Value *EvaluateExprAsBool(const Expr *E); 16245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 16252a41637a995affa1563f4d82a8b026e326a2faa0John McCall /// EmitIgnoredExpr - Emit an expression in a context which ignores the result. 16262a41637a995affa1563f4d82a8b026e326a2faa0John McCall void EmitIgnoredExpr(const Expr *E); 16272a41637a995affa1563f4d82a8b026e326a2faa0John McCall 16289b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// EmitAnyExpr - Emit code to compute the specified expression which can have 16299b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// any type. The result is returned as an RValue struct. If this is an 16309b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// aggregate expression, the aggloc/agglocvolatile arguments indicate where 16319b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// the result should be returned. 163249d1cd5a09ed3df353371fd7f206674a85e0fb45Mike Stump /// 163370517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko /// \param ignoreResult True if the resulting value isn't used. 1634558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExpr(const Expr *E, 1635e0c1168ec7910a1a7ed08df4d4f0c58c2fa2ecd1John McCall AggValueSlot aggSlot = AggValueSlot::ignored(), 1636e0c1168ec7910a1a7ed08df4d4f0c58c2fa2ecd1John McCall bool ignoreResult = false); 1637d9363c3a80168283b3da518b4e17f545a6246857Devang Patel 16380dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // EmitVAListRef - Emit a "reference" to a va_list; this is either the address 16390dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // or the value of the expression, depending on how va_list is defined. 16404fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman llvm::Value *EmitVAListRef(const Expr *E); 16414fd0aa5803357d8c72eeac2cae15e12649ea08feEli Friedman 16420dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitAnyExprToTemp - Similary to EmitAnyExpr(), however, the result will 16430dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// always be accessible even if no aggregate location is provided. 1644558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall RValue EmitAnyExprToTemp(const Expr *E); 164546f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbar 164660d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitAnyExprToMem - Emits the code necessary to evaluate an 1647649b4a1a9b5e6f768ca0cb84bd97b00f51083e15Chad Rosier /// arbitrary expression into the given memory location. 16483d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall void EmitAnyExprToMem(const Expr *E, llvm::Value *Location, 1649649b4a1a9b5e6f768ca0cb84bd97b00f51083e15Chad Rosier Qualifiers Quals, bool IsInitializer); 16503d3ec1c099ec8bfac3aa1fb0126fe515b7c7fa05John McCall 165160d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// EmitExprAsInit - Emits the code necessary to initialize a 165260d3365b46eb826fba44483583c0051ac5c41fe3John McCall /// location in memory with the given initializer. 1653f85e193739c953358c865005855253af4f68a497John McCall void EmitExprAsInit(const Expr *init, const ValueDecl *D, 1654a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall LValue lvalue, bool capturedByInit); 165560d3365b46eb826fba44483583c0051ac5c41fe3John McCall 165627fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// EmitAggregateCopy - Emit an aggrate copy. 165727fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// 165827fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// \param isVolatile - True iff either the source or the destination is 165927fe2e6c97a3782a0639d87b460741e8ba5d076dMike Stump /// volatile. 16607482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, 1661bd7d82878c1588afccbee6c68fa6e17bbbab7f2cEli Friedman QualType EltTy, bool isVolatile=false, 1662e0c1168ec7910a1a7ed08df4d4f0c58c2fa2ecd1John McCall CharUnits Alignment = CharUnits::Zero()); 16637482d12c345c6391f8956850545e2d4aa7701ce6Daniel Dunbar 166451b09f2c528c8460b5465c676173324e44176d62Devang Patel /// StartBlock - Start new block named N. If insert block is a dummy block 166551b09f2c528c8460b5465c676173324e44176d62Devang Patel /// then reuse it. 166651b09f2c528c8460b5465c676173324e44176d62Devang Patel void StartBlock(const char *N); 166751b09f2c528c8460b5465c676173324e44176d62Devang Patel 1668813733577d33ec56479667b49e1bff42dc6bba90Lauro Ramos Venancio /// GetAddrOfStaticLocalVar - Return the address of a static local variable. 16694c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD) { 16704c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return cast<llvm::Constant>(GetAddrOfLocalVar(BVD)); 16714c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 16724f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1673dde0a94120915fa925d1ffcdb997c7b44dc9fa21Anders Carlsson /// GetAddrOfLocalVar - Return the address of a local variable. 16744c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *GetAddrOfLocalVar(const VarDecl *VD) { 16754c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall llvm::Value *Res = LocalDeclMap[VD]; 16764c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall assert(Res && "Invalid argument to GetAddrOfLocalVar(), no decl!"); 16774c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall return Res; 16784c40d98ab7acf5f27fa89b17bd8fc0ef7683df37John McCall } 16790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 168056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueLValueMapping - Given an opaque value expression (which 168156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an l-value), return its mapping. 168256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const LValue &getOpaqueLValueMapping(const OpaqueValueExpr *e) { 168356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(OpaqueValueMapping::shouldBindAsLValue(e)); 168456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 168556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,LValue>::iterator 168656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueLValues.find(e); 168756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueLValues.end() && "no mapping for opaque value!"); 168856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall return it->second; 168956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall } 169056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 169156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// getOpaqueRValueMapping - Given an opaque value expression (which 169256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// must be mapped to an r-value), return its mapping. 169356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall const RValue &getOpaqueRValueMapping(const OpaqueValueExpr *e) { 169456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(!OpaqueValueMapping::shouldBindAsLValue(e)); 169556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 169656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall llvm::DenseMap<const OpaqueValueExpr*,RValue>::iterator 169756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall it = OpaqueRValues.find(e); 169856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall assert(it != OpaqueRValues.end() && "no mapping for opaque value!"); 1699e996ffd240f20a1048179d7727a6ee3227261921John McCall return it->second; 1700e996ffd240f20a1048179d7727a6ee3227261921John McCall } 1701e996ffd240f20a1048179d7727a6ee3227261921John McCall 17024f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// getAccessedFieldNo - Given an encoded value and a result number, return 17034f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman /// the input field number being accessed. 17044f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts); 17054f8d123e3e2c260de3377208106ddba87cee28b4Dan Gohman 1706ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L); 17073d00fdc82fd550ae4bfbb2e700a1fc85bbd6d6fdChris Lattner llvm::BasicBlock *GetIndirectGotoBlock(); 17080ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar 17091884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// EmitNullInitialization - Generate code to set a value of the given type to 17101884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// null, If the type contains data member pointers, they will be initialized 17111884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson /// to -1 in accordance with the Itanium C++ ABI. 17121884eb0b5c55edda4893ddec45e7dbad79758782Anders Carlsson void EmitNullInitialization(llvm::Value *DestPtr, QualType Ty); 1713ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson 1714ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // EmitVAArg - Generate code to get an argument from the passed in pointer 1715ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // and update it accordingly. The return value is a pointer to the argument. 1716ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson // FIXME: We should be able to get rid of this method and use the va_arg 17170dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump // instruction in LLVM instead once it works well enough. 1718ddf7cac45d85b73127adbbd91a2b28fc7291c57eAnders Carlsson llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty); 1719f666b7780d04186521adcaedb0e15dfa4d5e6933Anders Carlsson 1720bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// emitArrayLength - Compute the length of an array, even if it's a 1721bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall /// VLA, and drill down to the base element type. 1722bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *emitArrayLength(const ArrayType *arrayType, 1723bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType &baseType, 1724bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall llvm::Value *&addr); 1725bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 1726bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// EmitVLASize - Capture all the sizes for the VLA expressions in 1727bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// the given variably-modified type and store them in the VLASizeMap. 1728d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1729d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1730bc8d40d85f3fa1e34569834916f18fecaa635152John McCall void EmitVariablyModifiedType(QualType Ty); 1731bc8d40d85f3fa1e34569834916f18fecaa635152John McCall 1732bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// getVLASize - Returns an LLVM value that corresponds to the size, 1733bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// in non-variably-sized elements, of a variable length array type, 1734bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// plus that largest non-variably-sized element type. Assumes that 1735bc8d40d85f3fa1e34569834916f18fecaa635152John McCall /// the type has already been emitted with EmitVariablyModifiedType. 1736bc8d40d85f3fa1e34569834916f18fecaa635152John McCall std::pair<llvm::Value*,QualType> getVLASize(const VariableArrayType *vla); 1737bc8d40d85f3fa1e34569834916f18fecaa635152John McCall std::pair<llvm::Value*,QualType> getVLASize(QualType vla); 1738dcc90d87e6430c643b4311ae5b0089535bca41f7Anders Carlsson 17395f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// LoadCXXThis - Load the value of 'this'. This function is only valid while 17405f4307b7ba164b03c853c8d3eb4674d33f8967a6Anders Carlsson /// generating code for an C++ member function. 17412504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXThis() { 17422504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXThisValue && "no 'this' value for this function"); 17432504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXThisValue; 17442504941793b549323f9d29c62507cf21d865fadeJohn McCall } 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1746c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have 1747c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson /// virtual bases. 17482504941793b549323f9d29c62507cf21d865fadeJohn McCall llvm::Value *LoadCXXVTT() { 17492504941793b549323f9d29c62507cf21d865fadeJohn McCall assert(CXXVTTValue && "no VTT value for this function"); 17502504941793b549323f9d29c62507cf21d865fadeJohn McCall return CXXVTTValue; 17512504941793b549323f9d29c62507cf21d865fadeJohn McCall } 1752bff225ecf77fb891596ecb1b27196310d268365eJohn McCall 1753bff225ecf77fb891596ecb1b27196310d268365eJohn McCall /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a 17548561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson /// complete class to the given direct base. 17558561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson llvm::Value * 17568561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson GetAddressOfDirectBaseInCompleteClass(llvm::Value *Value, 17578561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 17588561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Base, 17598561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson bool BaseIsVirtual); 1760a88ad5618fcb07c5374c79d6781a33234984b039Anders Carlsson 1761f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// GetAddressOfBaseClass - This function will add the necessary delta to the 1762f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// load of 'this' and returns address of the base class. 17639cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *GetAddressOfBaseClass(llvm::Value *Value, 17648561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1765f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1766f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 176734a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson bool NullCheckValue); 176834a2d384c745ebc39cae45dc1c0c4a6a7012e09bAnders Carlsson 1769a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson llvm::Value *GetAddressOfDerivedClass(llvm::Value *Value, 17708561a8666c70f924c8f0209c41b9b77bbbf90607Anders Carlsson const CXXRecordDecl *Derived, 1771f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathBegin, 1772f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::path_const_iterator PathEnd, 17735a0f49ebc83e7fe0da07b9964c44b0a7fae270cbAnders Carlsson bool NullCheckValue); 1774a3697c9c155bda93fd2802f37084b620f4738822Anders Carlsson 1775bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson llvm::Value *GetVirtualBaseClassOffset(llvm::Value *This, 1776bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *ClassDecl, 1777bb7e17b52ffaa4097b4c4d7935746d23539ffe2aAnders Carlsson const CXXRecordDecl *BaseClassDecl); 17789cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1779c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor, 1780c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall CXXCtorType CtorType, 1781c0bf462cf35fe050bddbd8bff967298e4a67e79dJohn McCall const FunctionArgList &Args); 1782059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // It's important not to confuse this and the previous function. Delegating 1783059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // constructors are the C++0x feature. The constructor delegate optimization 1784059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // is used to reduce duplication in the base and complete consturctors where 1785059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt // they are substantially the same. 1786059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor, 1787059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt const FunctionArgList &Args); 1788155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type, 1789155ed4a23366f4514befb1c9f5f89d16f8b8b6dbAnders Carlsson bool ForVirtualBase, llvm::Value *This, 1790b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 1791b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 179234999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 179334999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D, 179434999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian llvm::Value *This, llvm::Value *Src, 179534999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgBeg, 179634999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian CallExpr::const_arg_iterator ArgEnd); 17971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1798288dcaf329c49b01dacd5c1dd9f35609555feecdFariborz Jahanian void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1799569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson const ConstantArrayType *ArrayTy, 18005d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 18015d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 180259174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 180359174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 18049cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1805569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D, 1806569c1f4a6c703eaa8b963bed7d5c2fd5d4569e93Anders Carlsson llvm::Value *NumElements, 18075d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson llvm::Value *ArrayPtr, 18085d4d946ec2d88696fd8422aeb64dc29688e6a2c1Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 180959174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor CallExpr::const_arg_iterator ArgEnd, 181059174c0633fb5cde41735cfbff5744bdf837e8d9Douglas Gregor bool ZeroInitialization = false); 1811b14095aa98c6fedd3625920c4ce834bcaf24d9f7Anders Carlsson 1812bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyCXXObject; 1813bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 18147267c1693abe7875b0c57268be05005ae013c6c9Anders Carlsson void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type, 18158e6404ca28d6bbb76e97ea2a53a74816c2a74665Anders Carlsson bool ForVirtualBase, llvm::Value *This); 18169cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 1817197056726ed6412501130c2ef2ff69009772aa65John McCall void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType, 1818197056726ed6412501130c2ef2ff69009772aa65John McCall llvm::Value *NewPtr, llvm::Value *NumElements); 18191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182086811609d9353e3aed198045d56e790eb3b6118cPeter Collingbourne void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType, 182186811609d9353e3aed198045d56e790eb3b6118cPeter Collingbourne llvm::Value *Ptr); 18221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1823a00703dccbdc6cc4a293db38477dea7db5538c7eAnders Carlsson llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E); 182460e282cc1e508be327b0481cecedc206873cb86aAnders Carlsson void EmitCXXDeleteExpr(const CXXDeleteExpr *E); 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18264bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr, 18274bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman QualType DeleteTy); 18284bf8152799ec41796f989ea1b94f6f1bac349117Eli Friedman 1829c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump llvm::Value* EmitCXXTypeidExpr(const CXXTypeidExpr *E); 1830c849c052d6b4b70f2651c1969531861a5f230053Mike Stump llvm::Value *EmitDynamicCast(llvm::Value *V, const CXXDynamicCastExpr *DCE); 1831c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump 1832972edf0534d8a50f87fac1d0ff34eb22f593df11Sebastian Redl void MaybeEmitStdInitializerListCleanup(llvm::Value *loc, const Expr *init); 1833af130fd78267ee9e2395b758a7d827b07ce317a0Sebastian Redl void EmitStdInitializerListCleanup(llvm::Value *loc, 1834af130fd78267ee9e2395b758a7d827b07ce317a0Sebastian Redl const InitListExpr *init); 183532cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl 18362c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// \brief Situations in which we might emit a check for the suitability of a 18372c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// pointer or glvalue. 18387ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith enum TypeCheckKind { 18392c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// Checking the operand of a load. Must be suitably sized and aligned. 18407ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith TCK_Load, 18412c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// Checking the destination of a store. Must be suitably sized and aligned. 18427ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith TCK_Store, 18432c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// Checking the bound value in a reference binding. Must be suitably sized 18442c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// and aligned, but is not required to refer to an object (until the 18452c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// reference is used), per core issue 453. 18467ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith TCK_ReferenceBinding, 18472c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// Checking the object expression in a non-static data member access. Must 18482c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// be an object within its lifetime. 18497ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith TCK_MemberAccess, 18502c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// Checking the 'this' pointer for a call to a non-static member function. 18512c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// Must be an object within its lifetime. 18527ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith TCK_MemberCall 18532c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith }; 18542c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith 18557ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith /// \brief Emit a check that \p V is the address of storage of the 18562c9f87ca5cccbfdaad82762368af5b2323320653Richard Smith /// appropriate size and alignment for an object of type \p Type. 18577ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith void EmitTypeCheck(TypeCheckKind TCK, llvm::Value *V, 18587ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith QualType Type, CharUnits Alignment = CharUnits::Zero()); 1859b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 1860dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, 1861dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 1862dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV, 1863dd36d328730d8c02915d0884541b45ec6ca0049dChris Lattner bool isInc, bool isPre); 18645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 18655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Declaration Emission 18665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 18670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 1868d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// EmitDecl - Emit a declaration. 1869d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1870d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 18715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDecl(const Decl &D); 1872d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1873b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitVarDecl - Emit a local variable declaration. 1874d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1875d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 1876b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitVarDecl(const VarDecl &D); 1877d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1878f85e193739c953358c865005855253af4f68a497John McCall void EmitScalarInit(const Expr *init, const ValueDecl *D, 1879a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall LValue lvalue, bool capturedByInit); 18807acddacc921cd0b3f813443a8641eeddb82dfbd4John McCall void EmitScalarInit(llvm::Value *init, LValue lvalue); 1881f85e193739c953358c865005855253af4f68a497John McCall 1882f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, 1883f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::Value *Address); 1884f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 1885b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// EmitAutoVarDecl - Emit an auto variable declaration. 1886d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// 1887d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar /// This function can be called with a null (unreachable) insert point. 188834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarDecl(const VarDecl &D); 188934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 189034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall class AutoVarEmission { 189134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall friend class CodeGenFunction; 189234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 189357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall const VarDecl *Variable; 189434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 189534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The alignment of the variable. 189634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall CharUnits Alignment; 189734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 189834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// The address of the alloca. Null if the variable was emitted 189934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// as a global constant. 190034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *Address; 190134695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 190234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *NRVOFlag; 190334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 190434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is a __block variable. 190534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsByRef; 190634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 190734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// True if the variable is of aggregate type and has a constant 190834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// initializer. 190934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool IsConstantAggregate; 191034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 191157b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall struct Invalid {}; 191257b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall AutoVarEmission(Invalid) : Variable(0) {} 191357b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 191434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission(const VarDecl &variable) 191557b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall : Variable(&variable), Address(0), NRVOFlag(0), 191634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall IsByRef(false), IsConstantAggregate(false) {} 191734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 191834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall bool wasEmittedAsGlobal() const { return Address == 0; } 191934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 192034695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall public: 192157b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); } 192257b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall 192334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Returns the address of the object within this declaration. 192434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// Note that this does not chase the forwarding pointer for 192534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall /// __block decls. 192634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall llvm::Value *getObjectAddress(CodeGenFunction &CGF) const { 192734695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall if (!IsByRef) return Address; 192834695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall 192934695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall return CGF.Builder.CreateStructGEP(Address, 193057b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall CGF.getByRefValueLLVMField(Variable), 193157b3b6a60856eaec30fd876a8a3face8f7e3ad7bJohn McCall Variable->getNameAsString()); 193234695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall } 193334695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall }; 193434695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall AutoVarEmission EmitAutoVarAlloca(const VarDecl &var); 193534695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarInit(const AutoVarEmission &emission); 193634695856c0e67b3765b46304cc71b5d2cd5b71c7John McCall void EmitAutoVarCleanups(const AutoVarEmission &emission); 1937bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall void emitAutoVarTypeCleanup(const AutoVarEmission &emission, 1938bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall QualType::DestructionKind dtorKind); 1939d286f05f1234bac289173f0eed88d7ecbaea0099Daniel Dunbar 1940b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall void EmitStaticVarDecl(const VarDecl &D, 1941b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall llvm::GlobalValue::LinkageTypes Linkage); 1942b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar 1943b7ec246872b412f0e7bb9e93eacfd78cfa6adfb3Daniel Dunbar /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl. 1944093ac461b37a573dcf226fa55faed96f318169b9Devang Patel void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo); 19450dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 194656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protectFromPeepholes - Protect a value that we're intending to 194756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// store to the side, but which will probably be used later, from 194856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// aggressive peepholing optimizations that might delete it. 194956ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 195056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// Pass the result to unprotectFromPeepholes to declare that 195156ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// protection is no longer required. 195256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// 195356ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// There's no particular reason why this shouldn't apply to 195456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall /// l-values, it's just that no existing peepholes work on pointers. 195556ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall PeepholeProtection protectFromPeepholes(RValue rvalue); 195656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall void unprotectFromPeepholes(PeepholeProtection protection); 195756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 19585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 19595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Statement Emission 19605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 19615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 19620dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info. 19630912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitStopPoint(const Stmt *S); 19640912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 19650dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStmt - Emit the code for the statement \arg S. It is legal to call 19660dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// this function even if there is no current insertion point. 19670dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// 19680dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// This function may clear the current insertion point; callers should use 19690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EnsureInsertPoint if they wish to subsequently generate code without first 19700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// calling EmitBlock, EmitBranch, or EmitStmt. 19715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitStmt(const Stmt *S); 1972a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 19730912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// EmitSimpleStmt - Try to emit a "simple" statement which does not 19740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// necessarily require an insertion point or debug information; typically 19750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// because the statement amounts to a jump or a container of other 19760dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// statements. 19770912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// 19780912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar /// \return True if the statement was handled. 19790912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar bool EmitSimpleStmt(const Stmt *S); 19800912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar 19819b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false, 1982558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall AggValueSlot AVS = AggValueSlot::ignored()); 1983a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 19840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitLabel - Emit the block for the given label. It is legal to call this 19850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// function even if there is no current insertion point. 1986ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt. 1987a448fb2da03ece39978784793eea68760e8205a1Daniel Dunbar 19885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitLabelStmt(const LabelStmt &S); 1989534986f2b21e6050bf00163cd6423fd92155a6edRichard Smith void EmitAttributedStmt(const AttributedStmt &S); 19905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitGotoStmt(const GotoStmt &S); 19910ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar void EmitIndirectGotoStmt(const IndirectGotoStmt &S); 19925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitIfStmt(const IfStmt &S); 19935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitWhileStmt(const WhileStmt &S); 19945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDoStmt(const DoStmt &S); 19955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitForStmt(const ForStmt &S); 19965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitReturnStmt(const ReturnStmt &S); 19975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EmitDeclStmt(const DeclStmt &S); 19980912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitBreakStmt(const BreakStmt &S); 19990912425f79418a215c2fbd2d8fc9511244a4aa46Daniel Dunbar void EmitContinueStmt(const ContinueStmt &S); 200051b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitSwitchStmt(const SwitchStmt &S); 200151b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitDefaultStmt(const DefaultStmt &S); 200251b09f2c528c8460b5465c676173324e44176d62Devang Patel void EmitCaseStmt(const CaseStmt &S); 2003c049e4f406a7f7179eba98659044a32508e53289Devang Patel void EmitCaseStmtRange(const CaseStmt &S); 2004a23b91d542e336be5051ac54f394e860fb756911Chad Rosier void EmitAsmStmt(const AsmStmt &S); 20050dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20063d8400d9a61aa4b63ff35e5cede405b32a41425eAnders Carlsson void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S); 200764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtTryStmt(const ObjCAtTryStmt &S); 200864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S); 200910cac6f7115b59a466bb8d2d51cdddeb38aadc37Chris Lattner void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S); 2010f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S); 20110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 201293c332a8ba2c193c435b293966d343dab15f555bJohn McCall llvm::Constant *getUnwindResumeFn(); 201386a3a03667bdb0dcab7e6a2877dfd234b07a6d43Douglas Gregor llvm::Constant *getUnwindResumeOrRethrowFn(); 201459a7000a79118e4c140885ccbb2ac6a686a73092John McCall void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 201559a7000a79118e4c140885ccbb2ac6a686a73092John McCall void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false); 20169fc6a7774643a810c8501dae2323e863fefb623eJohn McCall 20176815e941998659a55c20c147861b0f437928c3d8Anders Carlsson void EmitCXXTryStmt(const CXXTryStmt &S); 2018ad762fcdc16b9e4705b12b09d92b8c026212b906Richard Smith void EmitCXXForRangeStmt(const CXXForRangeStmt &S); 20199cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 20205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 20215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LValue Expression Emission 20225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 20235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 202413e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type. 202513e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar RValue GetUndefRValue(QualType Ty); 202613e81737a433b23f8c662d10d1d57356122a8caaDaniel Dunbar 2027ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E 2028ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// and issue an ErrorUnsupported style diagnostic (using the 2029ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar /// provided Name). 2030ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar RValue EmitUnsupportedRValue(const Expr *E, 2031ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar const char *Name); 2032ce1d38b8163650e473d7084e0686ed5a7956057bDaniel Dunbar 20330dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue 20340dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an ErrorUnsupported style diagnostic (using the provided Name). 20356ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar LValue EmitUnsupportedLValue(const Expr *E, 20366ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar const char *Name); 20376ba82a4a4b295e54cf192c3e98b28f39990c6194Daniel Dunbar 20385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLValue - Emit code to compute a designator that specifies the location 20395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// of the expression. 20405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 20415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// This can return one of two things: a simple address or a bitfield 20425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// reference. In either case, the LLVM Value* in the LValue structure is 20435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// guaranteed to be an LLVM pointer type. 20445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 20455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a bitfield reference, nothing about the pointee type of 20465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the LLVM value is known: For example, it may not be a pointer to an 20475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// integer. 20485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 20495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If this returns a normal address, and if the lvalue's C type is fixed 20505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// size, this method guarantees that the returned pointer type will point to 20515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// an LLVM type of the same size of the lvalue's type. If the lvalue has a 20525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// variable length type, this is not possible. 20535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 20545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitLValue(const Expr *E); 20550dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 20567ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith /// \brief Same as EmitLValue but additionally we generate checking code to 20577ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith /// guard against undefined behavior. This is only suitable when we know 20587ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith /// that the address will be used to access the object. 20597ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK); 2060b14e62d5aee7522b98c410ee65bd750c2cfe6f01Mike Stump 206126815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitToMemory - Change a scalar value from its value 206226815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its in-memory representation. 206326815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty); 206426815d97c5743481e317f17a8d53a6819d061862John McCall 206526815d97c5743481e317f17a8d53a6819d061862John McCall /// EmitFromMemory - Change a scalar value from its memory 206626815d97c5743481e317f17a8d53a6819d061862John McCall /// representation to its value representation. 206726815d97c5743481e317f17a8d53a6819d061862John McCall llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty); 206826815d97c5743481e317f17a8d53a6819d061862John McCall 20699d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitLoadOfScalar - Load a scalar value from an address, taking 20709d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 20719d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 207209429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump llvm::Value *EmitLoadOfScalar(llvm::Value *Addr, bool Volatile, 20733d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman unsigned Alignment, QualType Ty, 20743d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman llvm::MDNode *TBAAInfo = 0); 2075545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall 2076545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// EmitLoadOfScalar - Load a scalar value from an address, taking 2077545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// care to appropriately convert from the memory representation to 2078545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// the LLVM value representation. The l-value must be a simple 2079545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// l-value. 2080a07398ed98ea2b55ad7a505a3aab18aed93b149fJohn McCall llvm::Value *EmitLoadOfScalar(LValue lvalue); 20819d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 20829d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// EmitStoreOfScalar - Store a scalar value to an address, taking 20839d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// care to appropriately convert from the memory representation to 20849d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar /// the LLVM value representation. 208509429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump void EmitStoreOfScalar(llvm::Value *Value, llvm::Value *Addr, 20863d5aff5d3036b0ff09d114857cd2276134b3d8c9Dan Gohman bool Volatile, unsigned Alignment, QualType Ty, 20877a7ee3033e44b45630981355460ef89efa0bdcc4David Chisnall llvm::MDNode *TBAAInfo = 0, bool isInit=false); 2088545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall 2089545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// EmitStoreOfScalar - Store a scalar value to an address, taking 2090545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// care to appropriately convert from the memory representation to 2091545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall /// the LLVM value representation. The l-value must be a simple 20927a7ee3033e44b45630981355460ef89efa0bdcc4David Chisnall /// l-value. The isInit flag indicates whether this is an initialization. 20937a7ee3033e44b45630981355460ef89efa0bdcc4David Chisnall /// If so, atomic qualifiers are ignored and the store is always non-atomic. 20947a7ee3033e44b45630981355460ef89efa0bdcc4David Chisnall void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false); 20959d9cc874bcc168474757a8f90476684b4a93ed76Daniel Dunbar 20965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitLoadOfLValue - Given an expression that represents a value lvalue, 20975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this method emits the address of the lvalue, then loads the result as an 20985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// rvalue, returning the rvalue. 2099545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall RValue EmitLoadOfLValue(LValue V); 2100545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall RValue EmitLoadOfExtVectorElementLValue(LValue V); 2101545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall RValue EmitLoadOfBitfieldLValue(LValue LV); 21020dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 21035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EmitStoreThroughLValue - Store the specified rvalue into the specified 21045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lvalue, where both are guaranteed to the have the same type, and that type 21055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is 'Ty'. 21067a7ee3033e44b45630981355460ef89efa0bdcc4David Chisnall void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit=false); 2107545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst); 2108ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar 21090dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue - Store Src into Dst with same constraints as 21100dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitStoreThroughLValue. 2111ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar /// 21120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// \param Result [out] - If non-null, this will be set to a Value* for the 21130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// bit-field contents after the store, appropriate for use as the result of 21140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// an assignment to the bit-field. 2115545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, 2116ed3849b456d64d124bddc7ac044f3ce590bd9d69Daniel Dunbar llvm::Value **Result=0); 21170dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 211883ce9d4a552987d34cbd500e983db8d770232379John McCall /// Emit an l-value for an assignment (simple or compound) of complex type. 211983ce9d4a552987d34cbd500e983db8d770232379John McCall LValue EmitComplexAssignmentLValue(const BinaryOperator *E); 21202a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E); 212183ce9d4a552987d34cbd500e983db8d770232379John McCall 2122fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner // Note: only available for agg return types 212380e62c29fe21cd06c93eba6e72b7e32dca06fcf9Daniel Dunbar LValue EmitBinaryOperatorLValue(const BinaryOperator *E); 21242a41637a995affa1563f4d82a8b026e326a2faa0John McCall LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E); 21255b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 212622c940ee588a420cd2e6c8f68be2ac3cc80061ffChristopher Lamb LValue EmitCallExprLValue(const CallExpr *E); 21275b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar // Note: only available for agg return types 21285b5c9ef865607e179413462dcd71bcebb5b7daaeDaniel Dunbar LValue EmitVAArgExprLValue(const VAArgExpr *E); 21295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitDeclRefLValue(const DeclRefExpr *E); 21305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitStringLiteralLValue(const StringLiteral *E); 2131eaf2bb89eb2aad3b80673de30febe52df43c10ecChris Lattner LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E); 2132d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner LValue EmitPredefinedLValue(const PredefinedExpr *E); 21335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitUnaryOpLValue(const UnaryOperator *E); 21345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E); 2135213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E); 2136b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel LValue EmitMemberExpr(const MemberExpr *E); 2137820bca41c3899374775d2a1dfc2ef2e22aaf1c7bFariborz Jahanian LValue EmitObjCIsaExpr(const ObjCIsaExpr *E); 213806e863f2902b8ba55b056308875c19f7ba3dab25Eli Friedman LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E); 213913ec9100ca6bc03b5ce8832e4a0fcb724d47bcb1Richard Smith LValue EmitInitListLValue(const InitListExpr *E); 214056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E); 214175dfedaf702822c9e51a4f3c5d3ecf2d2ad99272Chris Lattner LValue EmitCastLValue(const CastExpr *E); 2142ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor LValue EmitNullInitializationLValue(const CXXScalarValueInitExpr *E); 214303e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E); 2144e996ffd240f20a1048179d7727a6ee3227261921John McCall LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e); 21459cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 2146377ecc7996dce6803f7b7b6208cab5e197c9c5b8Eli Friedman RValue EmitRValueForField(LValue LV, const FieldDecl *FD); 2147eaf856db5d1a272dc7188937206ef4572836f82aAnton Korobeynikov 2148dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall class ConstantEmission { 2149dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference; 2150dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall ConstantEmission(llvm::Constant *C, bool isReference) 2151dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall : ValueAndIsReference(C, isReference) {} 2152dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall public: 2153dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall ConstantEmission() {} 2154dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall static ConstantEmission forReference(llvm::Constant *C) { 2155dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall return ConstantEmission(C, true); 2156dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall } 2157dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall static ConstantEmission forValue(llvm::Constant *C) { 2158dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall return ConstantEmission(C, false); 2159dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall } 2160dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall 2161dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall operator bool() const { return ValueAndIsReference.getOpaqueValue() != 0; } 2162dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall 2163dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall bool isReference() const { return ValueAndIsReference.getInt(); } 2164dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const { 2165dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall assert(isReference()); 2166dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(), 2167dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall refExpr->getType()); 2168dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall } 2169dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall 2170dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall llvm::Constant *getValue() const { 2171dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall assert(!isReference()); 2172dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall return ValueAndIsReference.getPointer(); 2173dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall } 2174dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall }; 2175dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall 2176f4b88a45902af1802a1cb42ba48b1c474474f228John McCall ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr); 2177dd2ecee313b558a9b621ec003b45e0fbc83508d7John McCall 21784b9c2d235fb9449e249d74f48ecfec601650de93John McCall RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e, 21794b9c2d235fb9449e249d74f48ecfec601650de93John McCall AggValueSlot slot = AggValueSlot::ignored()); 21804b9c2d235fb9449e249d74f48ecfec601650de93John McCall LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e); 21814b9c2d235fb9449e249d74f48ecfec601650de93John McCall 21822a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface, 218329e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar const ObjCIvarDecl *Ivar); 2184377ecc7996dce6803f7b7b6208cab5e197c9c5b8Eli Friedman LValue EmitLValueForField(LValue Base, const FieldDecl* Field); 21859cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 218606a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that 218706a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// if the Field is a reference, this will return the address of the reference 218806a2970e9480c6d02b367b2f970baff29b9f9721Anders Carlsson /// and not the address of the value stored in the reference. 2189377ecc7996dce6803f7b7b6208cab5e197c9c5b8Eli Friedman LValue EmitLValueForFieldInitialization(LValue Base, 2190377ecc7996dce6803f7b7b6208cab5e197c9c5b8Eli Friedman const FieldDecl* Field); 21919cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 219245012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian LValue EmitLValueForIvar(QualType ObjectTy, 219345012a7ef5abf1042c893f3f2fa5c23cb5485ea9Fariborz Jahanian llvm::Value* Base, const ObjCIvarDecl *Ivar, 219429e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar unsigned CVRQualifiers); 2195fd64bb635dc221baa19f81d5d2a084f7eb269f7fFariborz Jahanian 2196b58d017f2b9eeed33f2ab3ede968b89cf5296bf2Anders Carlsson LValue EmitCXXConstructLValue(const CXXConstructExpr *E); 2197e61c9e80a108b5db7e5f0e702f0e455d737c6390Anders Carlsson LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E); 219831a3702618ab49578542cffee20ba0c8859b9d1eEli Friedman LValue EmitLambdaLValue(const LambdaExpr *E); 2199c2e84ae9a6d25cea3e583c768e576b4c981ec028Mike Stump LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E); 22009cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 22010a04d77bde7e3a661c2b41b60630d125d09ed6efDaniel Dunbar LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E); 2202391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E); 2203654599454c8e6cc83b1b9b3af43c49c2f66a26cbChris Lattner LValue EmitStmtExprLValue(const StmtExpr *E); 22048bfd31f9dad09cd52225d868bbd92a9bebe87775Fariborz Jahanian LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E); 220503b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E); 2206189d6ef40eff11b83b2cda941d5ed89a5cef09b2John McCall void EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::Constant *Init); 220756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall 22085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 2209883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner // Scalar Expression Emission 22105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 22115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 22120dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitCall - Generate a call of the given function, expecting the given 22130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// result type, and using the given argument list which specifies both the 22140dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// LLVM arguments and the types they were derived from. 2215c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar /// 2216f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// \param TargetDecl - If given, the decl of the function in a direct call; 2217f71d232ce5354bd2f0c94ded30fb936c2a3d968bMike Stump /// used to set attributes on the call (noreturn, etc.). 221888b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar RValue EmitCall(const CGFunctionInfo &FnInfo, 221988b5396b0897f28d22ae3debf4a0d97b33b6c362Daniel Dunbar llvm::Value *Callee, 2220f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson ReturnValueSlot ReturnValue, 2221c0ef9f59937c3971c48b6fed37cf5bd8985c024bDaniel Dunbar const CallArgList &Args, 2222dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall const Decl *TargetDecl = 0, 22234b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction **callOrInvoke = 0); 22241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 222531777a2540879051a3c643b90e02c3fd3d315243Anders Carlsson RValue EmitCall(QualType FnType, llvm::Value *Callee, 2226d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue, 2227986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgBeg, 2228986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson CallExpr::const_arg_iterator ArgEnd, 2229986477149db76e6d9f8d3c9859c9880c11b680aeAnders Carlsson const Decl *TargetDecl = 0); 22309cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitCallExpr(const CallExpr *E, 2231d2490a91341b57df7a7e54f8a707e7ecde2eeb4eAnders Carlsson ReturnValueSlot ReturnValue = ReturnValueSlot()); 22321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2233f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 22342d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<llvm::Value *> Args, 22358cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner const Twine &Name = ""); 22364c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee, 22378cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner const Twine &Name = ""); 2238f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall 2239566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson llvm::Value *BuildVirtualCall(const CXXMethodDecl *MD, llvm::Value *This, 22402acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty); 22419cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *BuildVirtualCall(const CXXDestructorDecl *DD, CXXDtorType Type, 22422acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value *This, llvm::Type *Ty); 22432726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian llvm::Value *BuildAppleKextVirtualCall(const CXXMethodDecl *MD, 22442726267f094a0c1f5ac5b501ec5a9898c58876bfFariborz Jahanian NestedNameSpecifier *Qual, 22452acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *Ty); 2246ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian 2247ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian llvm::Value *BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD, 2248ccd5259d33cbbdd6f5fbf7ccab4cb4a2702309eaFariborz Jahanian CXXDtorType Type, 2249771c678c04f5f685b4f188ec6c2fd88ad0f7457fFariborz Jahanian const CXXRecordDecl *RD); 2250566abee1e9828a7700b51e4d17ea08234fde3bb4Anders Carlsson 2251b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson RValue EmitCXXMemberCall(const CXXMethodDecl *MD, 2252b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *Callee, 2253a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue, 2254b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson llvm::Value *This, 2255c997d4278d329e18891aac9698fb991b2d4622ebAnders Carlsson llvm::Value *VTT, 2256b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 2257b9de2c55b2a33776e2bee8ee57df7599b374c8a5Anders Carlsson CallExpr::const_arg_iterator ArgEnd); 2258a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E, 2259a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 2260a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E, 2261a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 22625549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek 2263a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *EmitCXXOperatorMemberCallee(const CXXOperatorCallExpr *E, 2264a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson const CXXMethodDecl *MD, 2265a2447e0d1e28669cd637204a871f15b1215277fdAnders Carlsson llvm::Value *This); 22660f294632f36459174199b77699e339715244b5abAnders Carlsson RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E, 2267a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson const CXXMethodDecl *MD, 2268a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson ReturnValueSlot ReturnValue); 22691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22706c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E, 22716c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne ReturnValueSlot ReturnValue); 22726c0aa5ff6e6253db0f993053599e2a52b5b93b2dPeter Collingbourne 22739cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 22741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RValue EmitBuiltinExpr(const FunctionDecl *FD, 2275ef2abfee3ea16ec74942dc09e9e425f46aeb2582Daniel Dunbar unsigned BuiltinID, const CallExpr *E); 22765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2277a1736c0c750d4514a5d8fda36670addf1e4de54aAnders Carlsson RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue); 227809429b962811f2c0a7a81a1b0a89f96f5878b20cMike Stump 22790dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call 22800dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is unhandled by the current target. 2281f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 2282f02e9ddf5efc75917af712b3c7f909581205f0a5Daniel Dunbar 22832752c0137d95aa2f4ee1cdff4b564bac842e041bChris Lattner llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 22849cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer llvm::Value *EmitNeonCall(llvm::Function *F, 2285686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<llvm::Value*> &O, 2286db3d4d036037f379f12643e067b229862d61e932Bob Wilson const char *name, 228761eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman unsigned shift = 0, bool rightshift = false); 2288cf55652cf668c1402eee0b12edd2e5a1bc34d7a1Bob Wilson llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx); 22892acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty, 229061eecf5aea018ea65c9ab0bccacd2996b15c632dNate Begeman bool negateForRightShift); 22919cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 2292795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Value *BuildVector(ArrayRef<llvm::Value*> Ops); 2293564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E); 2294564f1de67d7ba43646b8740db86d6269e3dfbe0bAnders Carlsson llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E); 22950dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2296ed7c618f849e2541b1d0288c43154937652c5b15Daniel Dunbar llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E); 22977f02f721d48772e4eee4fccd8af4f800be1bbc1eChris Lattner llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E); 2298eb382ec1507cf2c8c12d7443d0b67c076223aec6Patrick Beard llvm::Value *EmitObjCBoxedExpr(const ObjCBoxedExpr *E); 2299ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek llvm::Value *EmitObjCArrayLiteral(const ObjCArrayLiteral *E); 2300ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek llvm::Value *EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E); 2301ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek llvm::Value *EmitObjCCollectionLiteral(const Expr *E, 2302ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek const ObjCMethodDecl *MethodWithObjects); 23038fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E); 2304ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, 2305ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return = ReturnValueSlot()); 23068fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner 2307f85e193739c953358c865005855253af4f68a497John McCall /// Retrieves the default cleanup kind for an ARC cleanup. 2308f85e193739c953358c865005855253af4f68a497John McCall /// Except under -fobjc-arc-eh, ARC cleanups are normal-only. 2309f85e193739c953358c865005855253af4f68a497John McCall CleanupKind getARCCleanupKind() { 2310f85e193739c953358c865005855253af4f68a497John McCall return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions 2311f85e193739c953358c865005855253af4f68a497John McCall ? NormalAndEHCleanup : NormalCleanup; 2312f85e193739c953358c865005855253af4f68a497John McCall } 2313f85e193739c953358c865005855253af4f68a497John McCall 2314f85e193739c953358c865005855253af4f68a497John McCall // ARC primitives. 2315f85e193739c953358c865005855253af4f68a497John McCall void EmitARCInitWeak(llvm::Value *value, llvm::Value *addr); 2316f85e193739c953358c865005855253af4f68a497John McCall void EmitARCDestroyWeak(llvm::Value *addr); 2317f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCLoadWeak(llvm::Value *addr); 2318f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCLoadWeakRetained(llvm::Value *addr); 2319f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreWeak(llvm::Value *value, llvm::Value *addr, 2320f85e193739c953358c865005855253af4f68a497John McCall bool ignored); 2321f85e193739c953358c865005855253af4f68a497John McCall void EmitARCCopyWeak(llvm::Value *dst, llvm::Value *src); 2322f85e193739c953358c865005855253af4f68a497John McCall void EmitARCMoveWeak(llvm::Value *dst, llvm::Value *src); 2323f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value); 2324f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value); 2325545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value, 2326545d996ec5a3113f046944f11b27cc2d6cb055b4John McCall bool ignored); 2327f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCStoreStrongCall(llvm::Value *addr, llvm::Value *value, 2328f85e193739c953358c865005855253af4f68a497John McCall bool ignored); 2329f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetain(QualType type, llvm::Value *value); 2330f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainNonBlock(llvm::Value *value); 2331348f16fc7c71f0d9b651cb79fd1012843073493fJohn McCall llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory); 2332f85e193739c953358c865005855253af4f68a497John McCall void EmitARCRelease(llvm::Value *value, bool precise); 2333f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCAutorelease(llvm::Value *value); 2334f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value); 2335f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value); 2336f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value); 2337f85e193739c953358c865005855253af4f68a497John McCall 2338f85e193739c953358c865005855253af4f68a497John McCall std::pair<LValue,llvm::Value*> 2339f85e193739c953358c865005855253af4f68a497John McCall EmitARCStoreAutoreleasing(const BinaryOperator *e); 2340f85e193739c953358c865005855253af4f68a497John McCall std::pair<LValue,llvm::Value*> 2341f85e193739c953358c865005855253af4f68a497John McCall EmitARCStoreStrong(const BinaryOperator *e, bool ignored); 2342f85e193739c953358c865005855253af4f68a497John McCall 23432b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *EmitObjCThrowOperand(const Expr *expr); 23442b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall 2345f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCProduceObject(QualType T, llvm::Value *Ptr); 2346f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr); 2347f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr); 2348f85e193739c953358c865005855253af4f68a497John McCall 2349348f16fc7c71f0d9b651cb79fd1012843073493fJohn McCall llvm::Value *EmitARCExtendBlockObject(const Expr *expr); 2350f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainScalarExpr(const Expr *expr); 2351f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr); 2352f85e193739c953358c865005855253af4f68a497John McCall 2353bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyARCStrongImprecise; 2354bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyARCStrongPrecise; 2355bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall static Destroyer destroyARCWeak; 2356bdc4d80956c83a486e58d3df6bb524a1f66ff574John McCall 2357f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr); 2358f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCAutoreleasePoolPush(); 2359f85e193739c953358c865005855253af4f68a497John McCall llvm::Value *EmitObjCMRRAutoreleasePoolPush(); 2360f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr); 2361f85e193739c953358c865005855253af4f68a497John McCall void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr); 2362f85e193739c953358c865005855253af4f68a497John McCall 23634029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// EmitReferenceBindingToExpr - Emits a reference binding to the passed in 23644029ca7ae9d3ffd7738fe2ed8782bebc30f36fd6Anders Carlsson /// expression. Will emit a temporary variable if E is not an LValue. 23659cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer RValue EmitReferenceBindingToExpr(const Expr* E, 236632f36baa6c8d491c374af622b4e3ac28d597453cAnders Carlsson const NamedDecl *InitializedDecl); 23673aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 2368883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 2369bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expression Emission 2370883f6a7cc7dccb1d675e27121a82614d63492a8dChris Lattner //===--------------------------------------------------------------------===// 2371bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner 2372bfc0c1ae4b505b52b36f572a9641f99e76879cabChris Lattner // Expressions are broken into three classes: scalar, complex, aggregate. 23730dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 23740dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// EmitScalarExpr - Emit the computation of the specified expression of LLVM 23750dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// scalar type, returning the result. 237614c5cbf59cffee52275230922283a247de407712Anders Carlsson llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false); 23770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 23783707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// EmitScalarConversion - Emit a conversion from the specified type to the 23793707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner /// specified destination type, both of which are LLVM scalar types. 23803707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy, 23813707b255f8993fb362904c9cff87b0e9bc6ca317Chris Lattner QualType DstTy); 23820dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 23834f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner /// EmitComplexToScalarConversion - Emit a conversion from the specified 23840dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// complex type to the specified destination type, where the destination type 23850dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// is an LLVM scalar type. 23864f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy, 23874f1a7b380809b4ca19ad2daff61bc11cd1e979d8Chris Lattner QualType DstTy); 23880dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 23890dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2390558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// EmitAggExpr - Emit the computation of the specified expression 2391558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// of aggregate type. The result is computed into the given slot, 2392558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall /// which may be null to indicate that the value is not needed. 2393e0c1168ec7910a1a7ed08df4d4f0c58c2fa2ecd1John McCall void EmitAggExpr(const Expr *E, AggValueSlot AS); 23940dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 239518aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// EmitAggExprToLValue - Emit the computation of the specified expression of 239618aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar /// aggregate type into a temporary LValue. 239718aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar LValue EmitAggExprToLValue(const Expr *E); 239818aba0dd518e486d8b50523e7dafb4b5657135d2Daniel Dunbar 2399082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// EmitGCMemmoveCollectable - Emit special API for structs with object 2400082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian /// pointers. 2401082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian void EmitGCMemmoveCollectable(llvm::Value *DestPtr, llvm::Value *SrcPtr, 240208c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 2403082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 24040c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /// EmitExtendGCLifetime - Given a pointer to an Objective-C object, 24050c24c808e4dce43e88abf2d5f98546b901bd4315John McCall /// make sure it survives garbage collection until this point. 24060c24c808e4dce43e88abf2d5f98546b901bd4315John McCall void EmitExtendGCLifetime(llvm::Value *object); 24070c24c808e4dce43e88abf2d5f98546b901bd4315John McCall 2408b6ef18a2b06d6760459e1756a61f79ff496cee19Chris Lattner /// EmitComplexExpr - Emit the computation of the specified expression of 240923b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// complex type, returning the result. 2410b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall ComplexPairTy EmitComplexExpr(const Expr *E, 2411b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreReal = false, 2412b418d74c11498b7e1044103131e2e3be4d63512eJohn McCall bool IgnoreImag = false); 24130dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 241423b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// EmitComplexExprIntoAddr - Emit the computation of the specified expression 241523b1cdb0b5e089468bb8475b8ec9287af67b4b59Chris Lattner /// of complex type, storing into the specified Value*. 2416190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner void EmitComplexExprIntoAddr(const Expr *E, llvm::Value *DestAddr, 2417190dbe203c2e892ac40f1786035c6c9be3f44a4cChris Lattner bool DestIsVolatile); 24187f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar 24197f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar /// StoreComplexToAddr - Store a complex number into the specified address. 24207f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar void StoreComplexToAddr(ComplexPairTy V, llvm::Value *DestAddr, 24217f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar bool DestIsVolatile); 24229b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner /// LoadComplexFromAddr - Load a complex number from the specified address. 24239b65551d0b387a7597fb39356a4d8ef10046445eChris Lattner ComplexPairTy LoadComplexFromAddr(llvm::Value *SrcAddr, bool SrcIsVolatile); 24242621fd1d6d3c5eadcae246859f62738645df7540Chris Lattner 2425b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// CreateStaticVarDecl - Create a zero-initialized LLVM global for 2426b6bbcc9995186799a60ce17d0c1acff31601653aJohn McCall /// a static local variable. 24270f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth llvm::GlobalVariable *CreateStaticVarDecl(const VarDecl &D, 24280f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth const char *Separator, 24290f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth llvm::GlobalValue::LinkageTypes Linkage); 24309cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 24310f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the 24320f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth /// global variable that has already been created for it. If the initializer 24330f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth /// has a different type than GV does, this may free GV and return a different 24340f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth /// one. Otherwise it just returns GV. 24350f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth llvm::GlobalVariable * 24360f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth AddInitializerToStaticVarDecl(const VarDecl &D, 24370f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth llvm::GlobalVariable *GV); 24389cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 24390096acf421c4609ce7f43e8b05f8c5ca866d4611Daniel Dunbar 24403b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++ 24413b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson /// variable with global storage. 24427ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr, 24437ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool PerformInit); 24443b2e16b3d25f6b311dba2871e2a566c96238c3d2Anders Carlsson 244520bb175cb8ae5844034828db094fb948c0e3454aJohn McCall /// Call atexit() with a function that passes the given argument to 244620bb175cb8ae5844034828db094fb948c0e3454aJohn McCall /// the given function. 244720bb175cb8ae5844034828db094fb948c0e3454aJohn McCall void registerGlobalDtorWithAtExit(llvm::Constant *fn, llvm::Constant *addr); 24481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24493030eb82593097502469a8b3fc26112c79c75605John McCall /// Emit code in this function to perform a guarded variable 24503030eb82593097502469a8b3fc26112c79c75605John McCall /// initialization. Guarded initializations are used when it's not 24513030eb82593097502469a8b3fc26112c79c75605John McCall /// possible to prove that an initialization will be done exactly 24523030eb82593097502469a8b3fc26112c79c75605John McCall /// once, e.g. with a static local variable or a static data member 24533030eb82593097502469a8b3fc26112c79c75605John McCall /// of a class template. 24540f30a12ce7b3d4d86c9ca9072f587da77c8eef34Chandler Carruth void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr, 24557ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool PerformInit); 24565cd91b513455fd7753e8815b54f0a49bbca6602dJohn McCall 2457efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// GenerateCXXGlobalInitFunc - Generates code for initializing global 2458efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 2459efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar void GenerateCXXGlobalInitFunc(llvm::Function *Fn, 2460efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar llvm::Constant **Decls, 2461efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar unsigned NumDecls); 2462efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 24633f88f686e32949ffe02ccb551f482f9cf810358bJohn McCall /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global 2464efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar /// variables. 24653f88f686e32949ffe02ccb551f482f9cf810358bJohn McCall void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn, 24663f88f686e32949ffe02ccb551f482f9cf810358bJohn McCall const std::vector<std::pair<llvm::WeakVH, 24673f88f686e32949ffe02ccb551f482f9cf810358bJohn McCall llvm::Constant*> > &DtorsAndObjects); 2468efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2469d26bc76c98006609002d9930f8840490e88ac5b5John McCall void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, 2470d26bc76c98006609002d9930f8840490e88ac5b5John McCall const VarDecl *D, 24717ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith llvm::GlobalVariable *Addr, 24727ca4850a3e3530fa6c93b64b740446e32c97f992Richard Smith bool PerformInit); 2473efb0fa9e11f75af51744a6159530ef7cc8efa24aDaniel Dunbar 2474558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest); 247534999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian 247634999876e215b22febc240b1a6dc054215d12f9cFariborz Jahanian void EmitSynthesizedCXXCopyCtor(llvm::Value *Dest, llvm::Value *Src, 2477830937bc1100fba7682f7c32c40512085870f50cFariborz Jahanian const Expr *Exp); 24781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24791a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall void enterFullExpression(const ExprWithCleanups *E) { 24801a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall if (E->getNumObjects() == 0) return; 24811a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall enterNonTrivialFullExpression(E); 24821a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall } 24831a343ebbf413e8eae6b2737b2b2d79cbf5765571John McCall void enterNonTrivialFullExpression(const ExprWithCleanups *E); 24841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2485756b5c4f9d52642d87d1948bee58f97a4f795b24Anders Carlsson void EmitCXXThrowExpr(const CXXThrowExpr *E); 24861eb2e59338c4b9c0429fc39ca98662adc9e7a3f2Douglas Gregor 24874c5d8afd100189b6cce4fd89bfb8aec5700acb50Eli Friedman void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest); 24884c5d8afd100189b6cce4fd89bfb8aec5700acb50Eli Friedman 2489276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman RValue EmitAtomicExpr(AtomicExpr *E, llvm::Value *Dest = 0); 2490276b061970939293f1abaf694bd3ef05b2cbda79Eli Friedman 24910ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 249277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge // Annotations Emission 249377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge //===--------------------------------------------------------------------===// 249477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 249577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge /// Emit an annotation call (intrinsic or builtin). 249677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Value *EmitAnnotationCall(llvm::Value *AnnotationFn, 249777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Value *AnnotatedVal, 249877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::StringRef AnnotationStr, 249977f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge SourceLocation Location); 250077f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 250177f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge /// Emit local annotations for the local variable V, declared by D. 250277f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge void EmitVarAnnotations(const VarDecl *D, llvm::Value *V); 250377f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 250477f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge /// Emit field annotations for the given field & value. Returns the 250577f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge /// annotation result. 250677f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge llvm::Value *EmitFieldAnnotations(const FieldDecl *D, llvm::Value *V); 250777f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge 250877f68bb90af93b95045fb994e7cd68137adcc132Julien Lerouge //===--------------------------------------------------------------------===// 25090ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar // Internal Helpers 25100ffb125996336fc7602b162c0a9e392f1a93060fDaniel Dunbar //===--------------------------------------------------------------------===// 25110dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 25120946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// ContainsLabel - Return true if the statement contains a label in it. If 25130946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// this statement is not executed normally, it not containing a label means 25140946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner /// that we can just remove the code. 25150946ccd1e58c1f1da31ddbca67c5b6301ac8b255Chris Lattner static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false); 25160dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2517ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// containsBreak - Return true if the statement contains a break out of it. 2518ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// If the statement (recursively) contains a switch or loop with a break 2519ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// inside of it, this is fine. 2520ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner static bool containsBreak(const Stmt *S); 2521ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 25224bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2523c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2524c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner /// constant folds return true and set the boolean result in Result. 2525c2c90011a688c04a4e980282f08c267e081c4b00Chris Lattner bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result); 25260dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 2527ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// ConstantFoldsToSimpleInteger - If the specified expression does not fold 2528ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// to a constant, or if it does but contains a label, return false. If it 2529ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner /// constant folds return true and set the folded value. 2530e1ecdc168175719d74e112bcacd4aae5e12d4631Richard Trieu bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result); 2531ef425a69006afaa87751ee41ccf8ff405d9ede70Chris Lattner 253231a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an 253331a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// if statement) to the specified blocks. Based on the condition, this might 253431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattner /// try to simplify the codegen of the conditional based on the branch. 25359bc47e29dce8f095be7a6d07dbb02a5a7a112949Chris Lattner void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, 25364bc0455d826e9634b7a68c0d06146edd633c9453Daniel Dunbar llvm::BasicBlock *FalseBlock); 2537be07f60131bc6f8d6696f4644df1ef667a1730d5Mike Stump 25387ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith /// \brief Create a basic block that will call the trap intrinsic, and emit a 25397ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith /// conditional branch to it. 25407ac9ef1c82c779a5348ed11b3d10e01c58803b35Richard Smith void EmitCheck(llvm::Value *Checked); 25419cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer 254221c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson /// EmitCallArg - Emit a single call argument. 2543413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType); 254421c9ad9d29d08a287292c670e7c52bc522c7f8bbAnders Carlsson 25452736071ea3a46f90e65c93418961611d96c10ab9John McCall /// EmitDelegateCallArg - We are performing a delegate call; that 25462736071ea3a46f90e65c93418961611d96c10ab9John McCall /// is, the current function is delegating to another one. Produce 25472736071ea3a46f90e65c93418961611d96c10ab9John McCall /// a r-value suitable for passing the given parameter. 2548413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall void EmitDelegateCallArg(CallArgList &args, const VarDecl *param); 25492736071ea3a46f90e65c93418961611d96c10ab9John McCall 2550c5096cbf7a42e0f9012945b00d9037a5b5a88d72Peter Collingbourne /// SetFPAccuracy - Set the minimum required accuracy of the given floating 2551c5096cbf7a42e0f9012945b00d9037a5b5a88d72Peter Collingbourne /// point operation, expressed as the maximum relative error in ulp. 25528250016fb9491fcfde7fce05230d66e267944484Duncan Sands void SetFPAccuracy(llvm::Value *Val, float Accuracy); 2553c5096cbf7a42e0f9012945b00d9037a5b5a88d72Peter Collingbourne 255431a0984b5cb4af99d2407c0f25bf5af68df681c6Chris Lattnerprivate: 2555c3f8955d7da1019dbe16b0bdf3e49d2e08d988e9Rafael Espindola llvm::MDNode *getRangeForLoadFromType(QualType Ty); 255629e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar void EmitReturnOfRValue(RValue RV, QualType Ty); 255729e0bccf2bcce22b877f8b2ed173f564c116b97eDaniel Dunbar 25585627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty 25595627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// from function arguments into \arg Dst. See ABIArgInfo::Expand. 25605627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// 25615627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \param AI - The first function argument of the expansion. 25625627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// \return The argument following the last expanded function 25635627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar /// argument. 25640dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump llvm::Function::arg_iterator 25655627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar ExpandTypeFromArgs(QualType Ty, LValue Dst, 25665627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar llvm::Function::arg_iterator AI); 25675627377df5439a1d3d46a4e4cef4ae44f84a322bDaniel Dunbar 25680dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ExpandTypeToArgs - Expand an RValue \arg Src, with the LLVM type for \arg 25690dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// Ty, into individual arguments on the provided vector \arg Args. See 25700dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump /// ABIArgInfo::Expand. 25710dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump void ExpandTypeToArgs(QualType Ty, RValue Src, 2572686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<llvm::Value*, 16> &Args, 2573811bf3669f4d82c57fe3cd3c49050fdbc95d0affChris Lattner llvm::FunctionType *IRFuncTy); 2574c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson 257542b60551eff3a424e191b293bfd606559dc96bffChad Rosier llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info, 2576c8c7b187adcd989e01a9fba1ebead6c2abd770c9Anders Carlsson const Expr *InputExpr, std::string &ConstraintStr); 25770dd9e88aa972d80025c66fb3d7df0266b44cad1aMike Stump 257842b60551eff3a424e191b293bfd606559dc96bffChad Rosier llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info, 25796d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman LValue InputValue, QualType InputType, 25806d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman std::string &ConstraintStr); 25816d7cfd7ef82e42ff30ee1dafd2883fd94e9f8294Eli Friedman 25820139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson /// EmitCallArgs - Emit call arguments for a function. 25831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// The CallArgTypeInfo parameter is used for iterating over the known 2584af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson /// argument types of the function being called. 2585af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson template<typename T> 2586af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson void EmitCallArgs(CallArgList& Args, const T* CallArgTypeInfo, 25870139bb96494b4c4ba0824617d5d2495dc7e44c76Anders Carlsson CallExpr::const_arg_iterator ArgBeg, 2588af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator ArgEnd) { 2589af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson CallExpr::const_arg_iterator Arg = ArgBeg; 2590af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson 2591af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // First, use the argument types that the type info knows about 2592af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson if (CallArgTypeInfo) { 2593af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson for (typename T::arg_type_iterator I = CallArgTypeInfo->arg_type_begin(), 2594af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson E = CallArgTypeInfo->arg_type_end(); I != E; ++I, ++Arg) { 259544b0a3e858af7b19f489619e52cd58970611cd15Eli Friedman assert(Arg != ArgEnd && "Running over edge of argument list!"); 2596af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson QualType ArgType = *I; 2597745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#ifndef NDEBUG 2598745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian QualType ActualArgType = Arg->getType(); 2599745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgType->isPointerType() && ActualArgType->isPointerType()) { 26009cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ActualBaseType = 2601745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType->getAs<PointerType>()->getPointeeType(); 26029cac4942b920d4c5514e71949e3062ed626bfbdfMichael J. Spencer QualType ArgBaseType = 2603745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ArgType->getAs<PointerType>()->getPointeeType(); 2604745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (ArgBaseType->isVariableArrayType()) { 2605745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (const VariableArrayType *VAT = 2606745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getAsVariableArrayType(ActualBaseType)) { 2607745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian if (!VAT->getSizeExpr()) 2608745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian ActualArgType = ArgType; 2609745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2610745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2611745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian } 2612af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson assert(getContext().getCanonicalType(ArgType.getNonReferenceType()). 26131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump getTypePtr() == 2614745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian getContext().getCanonicalType(ActualArgType).getTypePtr() && 2615af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "type mismatch in call argument!"); 2616745da3a5bb4ea35f93f50301e7fbbb7d78d3b6bbFariborz Jahanian#endif 2617413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, ArgType); 2618af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 26191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Either we've emitted all the call args, or we have a call to a 2621af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // variadic function. 26221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Arg == ArgEnd || CallArgTypeInfo->isVariadic()) && 2623af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson "Extra arguments in non-variadic function!"); 26241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2625af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 26261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2627af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson // If we still have any arguments, emit them using the type of the argument. 2628413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall for (; Arg != ArgEnd; ++Arg) 2629413ebdb1af6fb0d81845b61254daf02ba0449afdJohn McCall EmitCallArg(Args, *Arg, Arg->getType()); 2630af23f69aa6247e6bd20a66b2e16babb91f192535Anders Carlsson } 2631492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall 2632492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall const TargetCodeGenInfo &getTargetHooks() const { 2633492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall return CGM.getTargetCodeGenInfo(); 2634492c4f998d848673d3d6c9e6416115df4036a71dJohn McCall } 2635744016dde06fcffd50931e94a98c850f8b12cd87John McCall 2636744016dde06fcffd50931e94a98c850f8b12cd87John McCall void EmitDeclMetadata(); 2637f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall 2638f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall CodeGenModule::ByrefHelpers * 26392acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner buildByrefHelpers(llvm::StructType &byrefType, 2640f0c11f7e6848f023ced6a5b51399ba787c7d4d0bJohn McCall const AutoVarEmission &emission); 2641b49bd27b334a6c4e3bf9d810a7d5b022578f1194Dan Gohman 2642b49bd27b334a6c4e3bf9d810a7d5b022578f1194Dan Gohman void AddObjCARCExceptionMetadata(llvm::Instruction *Inst); 2643f4c3db175101cbf94dad59419c3ed7aed51bf606Jay Foad 2644ea93e40785ffeadfac66b948c95f9490ec26207aEli Friedman /// GetPointeeAlignment - Given an expression with a pointer type, emit the 2645ea93e40785ffeadfac66b948c95f9490ec26207aEli Friedman /// value and compute our best estimate of the alignment of the pointee. 2646ea93e40785ffeadfac66b948c95f9490ec26207aEli Friedman std::pair<llvm::Value*, unsigned> EmitPointerWithAlignment(const Expr *Addr); 26475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 26481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2649150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// Helper class with most of the code for saving a value for a 2650150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall/// conditional expression cleanup. 2651804b807ea918184d6de63bd745e1ff75a9bfc679John McCallstruct DominatingLLVMValue { 2652150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type; 2653150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2654150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Answer whether the given value needs extra work to be saved. 2655150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static bool needsSaving(llvm::Value *value) { 2656150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's not an instruction, we don't need to save. 2657150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!isa<llvm::Instruction>(value)) return false; 2658150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2659150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // If it's an instruction in the entry block, we don't need to save. 2660150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent(); 2661150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return (block != &block->getParent()->getEntryBlock()); 2662150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2663150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2664150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall /// Try to save the given value. 2665150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static saved_type save(CodeGenFunction &CGF, llvm::Value *value) { 2666150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!needsSaving(value)) return saved_type(value, false); 2667150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2668150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall // Otherwise we need an alloca. 2669150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall llvm::Value *alloca = 2670150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.CreateTempAlloca(value->getType(), "cond-cleanup.save"); 2671150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall CGF.Builder.CreateStore(value, alloca); 2672150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2673150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return saved_type(alloca, true); 2674150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2675150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2676150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static llvm::Value *restore(CodeGenFunction &CGF, saved_type value) { 2677150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall if (!value.getInt()) return value.getPointer(); 2678150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall return CGF.Builder.CreateLoad(value.getPointer()); 2679150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2680150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2681150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 2682804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A partial specialization of DominatingValue for llvm::Values that 2683804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// might be llvm::Instructions. 2684804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <class T> struct DominatingPointer<T,true> : DominatingLLVMValue { 2685804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef T *type; 2686804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2687804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return static_cast<T*>(DominatingLLVMValue::restore(CGF, value)); 2688804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2689804b807ea918184d6de63bd745e1ff75a9bfc679John McCall}; 2690804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2691804b807ea918184d6de63bd745e1ff75a9bfc679John McCall/// A specialization of DominatingValue for RValue. 2692804b807ea918184d6de63bd745e1ff75a9bfc679John McCalltemplate <> struct DominatingValue<RValue> { 2693804b807ea918184d6de63bd745e1ff75a9bfc679John McCall typedef RValue type; 2694804b807ea918184d6de63bd745e1ff75a9bfc679John McCall class saved_type { 2695804b807ea918184d6de63bd745e1ff75a9bfc679John McCall enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral, 2696804b807ea918184d6de63bd745e1ff75a9bfc679John McCall AggregateAddress, ComplexAddress }; 2697804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2698804b807ea918184d6de63bd745e1ff75a9bfc679John McCall llvm::Value *Value; 2699804b807ea918184d6de63bd745e1ff75a9bfc679John McCall Kind K; 2700804b807ea918184d6de63bd745e1ff75a9bfc679John McCall saved_type(llvm::Value *v, Kind k) : Value(v), K(k) {} 2701804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2702804b807ea918184d6de63bd745e1ff75a9bfc679John McCall public: 2703804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(RValue value); 2704804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, RValue value); 2705804b807ea918184d6de63bd745e1ff75a9bfc679John McCall RValue restore(CodeGenFunction &CGF); 2706804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2707804b807ea918184d6de63bd745e1ff75a9bfc679John McCall // implementations in CGExprCXX.cpp 2708804b807ea918184d6de63bd745e1ff75a9bfc679John McCall }; 2709804b807ea918184d6de63bd745e1ff75a9bfc679John McCall 2710804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static bool needsSaving(type value) { 2711804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::needsSaving(value); 2712804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2713804b807ea918184d6de63bd745e1ff75a9bfc679John McCall static saved_type save(CodeGenFunction &CGF, type value) { 2714804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return saved_type::save(CGF, value); 2715804b807ea918184d6de63bd745e1ff75a9bfc679John McCall } 2716150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall static type restore(CodeGenFunction &CGF, saved_type value) { 2717804b807ea918184d6de63bd745e1ff75a9bfc679John McCall return value.restore(CGF); 2718150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall } 2719150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall}; 2720150b462afc7a713edd19bcbbbb22381fe060d4f5John McCall 27215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace CodeGen 27225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 27234e1524babb095e70de1da882573eb6fbee98a857Fariborz Jahanian 27245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 2725