diff options
| -rw-r--r-- | lib/Transforms/ObjCARC/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | lib/Transforms/ObjCARC/ObjCARC.h | 128 | ||||
| -rw-r--r-- | lib/Transforms/ObjCARC/ObjCARCUtil.cpp | 149 |
3 files changed, 152 insertions, 126 deletions
diff --git a/lib/Transforms/ObjCARC/CMakeLists.txt b/lib/Transforms/ObjCARC/CMakeLists.txt index b988611409..e710044066 100644 --- a/lib/Transforms/ObjCARC/CMakeLists.txt +++ b/lib/Transforms/ObjCARC/CMakeLists.txt @@ -4,6 +4,7 @@ add_llvm_library(LLVMObjCARCOpts ObjCARCExpand.cpp ObjCARCAPElim.cpp ObjCARCAliasAnalysis.cpp + ObjCARCUtil.cpp ) add_dependencies(LLVMObjCARCOpts intrinsics_gen) diff --git a/lib/Transforms/ObjCARC/ObjCARC.h b/lib/Transforms/ObjCARC/ObjCARC.h index a6fdc284ce..854de74e87 100644 --- a/lib/Transforms/ObjCARC/ObjCARC.h +++ b/lib/Transforms/ObjCARC/ObjCARC.h @@ -91,60 +91,7 @@ enum InstructionClass { IC_None ///< anything else }; -static raw_ostream &operator<<(raw_ostream &OS, const InstructionClass Class) - LLVM_ATTRIBUTE_USED; - -static raw_ostream &operator<<(raw_ostream &OS, const InstructionClass Class) { - switch (Class) { - case IC_Retain: - return OS << "IC_Retain"; - case IC_RetainRV: - return OS << "IC_RetainRV"; - case IC_RetainBlock: - return OS << "IC_RetainBlock"; - case IC_Release: - return OS << "IC_Release"; - case IC_Autorelease: - return OS << "IC_Autorelease"; - case IC_AutoreleaseRV: - return OS << "IC_AutoreleaseRV"; - case IC_AutoreleasepoolPush: - return OS << "IC_AutoreleasepoolPush"; - case IC_AutoreleasepoolPop: - return OS << "IC_AutoreleasepoolPop"; - case IC_NoopCast: - return OS << "IC_NoopCast"; - case IC_FusedRetainAutorelease: - return OS << "IC_FusedRetainAutorelease"; - case IC_FusedRetainAutoreleaseRV: - return OS << "IC_FusedRetainAutoreleaseRV"; - case IC_LoadWeakRetained: - return OS << "IC_LoadWeakRetained"; - case IC_StoreWeak: - return OS << "IC_StoreWeak"; - case IC_InitWeak: - return OS << "IC_InitWeak"; - case IC_LoadWeak: - return OS << "IC_LoadWeak"; - case IC_MoveWeak: - return OS << "IC_MoveWeak"; - case IC_CopyWeak: - return OS << "IC_CopyWeak"; - case IC_DestroyWeak: - return OS << "IC_DestroyWeak"; - case IC_StoreStrong: - return OS << "IC_StoreStrong"; - case IC_CallOrUser: - return OS << "IC_CallOrUser"; - case IC_Call: - return OS << "IC_Call"; - case IC_User: - return OS << "IC_User"; - case IC_None: - return OS << "IC_None"; - } - llvm_unreachable("Unknown instruction class!"); -} +raw_ostream &operator<<(raw_ostream &OS, const InstructionClass Class); /// \brief Test if the given class is objc_retain or equivalent. static inline bool IsRetain(InstructionClass Class) { @@ -218,78 +165,7 @@ static inline bool IsNoThrow(InstructionClass Class) { /// \brief Determine if F is one of the special known Functions. If it isn't, /// return IC_CallOrUser. -static InstructionClass GetFunctionClass(const Function *F) - LLVM_ATTRIBUTE_USED; -static InstructionClass GetFunctionClass(const Function *F) { - Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end(); - - // No arguments. - if (AI == AE) - return StringSwitch<InstructionClass>(F->getName()) - .Case("objc_autoreleasePoolPush", IC_AutoreleasepoolPush) - .Default(IC_CallOrUser); - - // One argument. - const Argument *A0 = AI++; - if (AI == AE) - // Argument is a pointer. - if (PointerType *PTy = dyn_cast<PointerType>(A0->getType())) { - Type *ETy = PTy->getElementType(); - // Argument is i8*. - if (ETy->isIntegerTy(8)) - return StringSwitch<InstructionClass>(F->getName()) - .Case("objc_retain", IC_Retain) - .Case("objc_retainAutoreleasedReturnValue", IC_RetainRV) - .Case("objc_retainBlock", IC_RetainBlock) - .Case("objc_release", IC_Release) - .Case("objc_autorelease", IC_Autorelease) - .Case("objc_autoreleaseReturnValue", IC_AutoreleaseRV) - .Case("objc_autoreleasePoolPop", IC_AutoreleasepoolPop) - .Case("objc_retainedObject", IC_NoopCast) - .Case("objc_unretainedObject", IC_NoopCast) - .Case("objc_unretainedPointer", IC_NoopCast) - .Case("objc_retain_autorelease", IC_FusedRetainAutorelease) - .Case("objc_retainAutorelease", IC_FusedRetainAutorelease) - .Case("objc_retainAutoreleaseReturnValue",IC_FusedRetainAutoreleaseRV) - .Default(IC_CallOrUser); - - // Argument is i8** - if (PointerType *Pte = dyn_cast<PointerType>(ETy)) - if (Pte->getElementType()->isIntegerTy(8)) - return StringSwitch<InstructionClass>(F->getName()) - .Case("objc_loadWeakRetained", IC_LoadWeakRetained) - .Case("objc_loadWeak", IC_LoadWeak) - .Case("objc_destroyWeak", IC_DestroyWeak) - .Default(IC_CallOrUser); - } - - // Two arguments, first is i8**. - const Argument *A1 = AI++; - if (AI == AE) - if (PointerType *PTy = dyn_cast<PointerType>(A0->getType())) - if (PointerType *Pte = dyn_cast<PointerType>(PTy->getElementType())) - if (Pte->getElementType()->isIntegerTy(8)) - if (PointerType *PTy1 = dyn_cast<PointerType>(A1->getType())) { - Type *ETy1 = PTy1->getElementType(); - // Second argument is i8* - if (ETy1->isIntegerTy(8)) - return StringSwitch<InstructionClass>(F->getName()) - .Case("objc_storeWeak", IC_StoreWeak) - .Case("objc_initWeak", IC_InitWeak) - .Case("objc_storeStrong", IC_StoreStrong) - .Default(IC_CallOrUser); - // Second argument is i8**. - if (PointerType *Pte1 = dyn_cast<PointerType>(ETy1)) - if (Pte1->getElementType()->isIntegerTy(8)) - return StringSwitch<InstructionClass>(F->getName()) - .Case("objc_moveWeak", IC_MoveWeak) - .Case("objc_copyWeak", IC_CopyWeak) - .Default(IC_CallOrUser); - } - - // Anything else. - return IC_CallOrUser; -} +InstructionClass GetFunctionClass(const Function *F); /// \brief Determine which objc runtime call instruction class V belongs to. /// diff --git a/lib/Transforms/ObjCARC/ObjCARCUtil.cpp b/lib/Transforms/ObjCARC/ObjCARCUtil.cpp new file mode 100644 index 0000000000..3192a6df71 --- /dev/null +++ b/lib/Transforms/ObjCARC/ObjCARCUtil.cpp @@ -0,0 +1,149 @@ +//===- ObjCARCUtil.h - ObjC ARC Optimization ----------*- mode: c++ -*-----===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +/// \file +/// This file defines several utility functions used by various ARC +/// optimizations which are IMHO too big to be in a header file. +/// +/// WARNING: This file knows about certain library functions. It recognizes them +/// by name, and hardwires knowledge of their semantics. +/// +/// WARNING: This file knows about how certain Objective-C library functions are +/// used. Naive LLVM IR transformations which would otherwise be +/// behavior-preserving may break these assumptions. +/// +//===----------------------------------------------------------------------===// + +#include "ObjCARC.h" + +using namespace llvm; +using namespace llvm::objcarc; + +raw_ostream &llvm::objcarc::operator<<(raw_ostream &OS, + const InstructionClass Class) { + switch (Class) { + case IC_Retain: + return OS << "IC_Retain"; + case IC_RetainRV: + return OS << "IC_RetainRV"; + case IC_RetainBlock: + return OS << "IC_RetainBlock"; + case IC_Release: + return OS << "IC_Release"; + case IC_Autorelease: + return OS << "IC_Autorelease"; + case IC_AutoreleaseRV: + return OS << "IC_AutoreleaseRV"; + case IC_AutoreleasepoolPush: + return OS << "IC_AutoreleasepoolPush"; + case IC_AutoreleasepoolPop: + return OS << "IC_AutoreleasepoolPop"; + case IC_NoopCast: + return OS << "IC_NoopCast"; + case IC_FusedRetainAutorelease: + return OS << "IC_FusedRetainAutorelease"; + case IC_FusedRetainAutoreleaseRV: + return OS << "IC_FusedRetainAutoreleaseRV"; + case IC_LoadWeakRetained: + return OS << "IC_LoadWeakRetained"; + case IC_StoreWeak: + return OS << "IC_StoreWeak"; + case IC_InitWeak: + return OS << "IC_InitWeak"; + case IC_LoadWeak: + return OS << "IC_LoadWeak"; + case IC_MoveWeak: + return OS << "IC_MoveWeak"; + case IC_CopyWeak: + return OS << "IC_CopyWeak"; + case IC_DestroyWeak: + return OS << "IC_DestroyWeak"; + case IC_StoreStrong: + return OS << "IC_StoreStrong"; + case IC_CallOrUser: + return OS << "IC_CallOrUser"; + case IC_Call: + return OS << "IC_Call"; + case IC_User: + return OS << "IC_User"; + case IC_None: + return OS << "IC_None"; + } + llvm_unreachable("Unknown instruction class!"); +} + +InstructionClass llvm::objcarc::GetFunctionClass(const Function *F) { + Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end(); + + // No arguments. + if (AI == AE) + return StringSwitch<InstructionClass>(F->getName()) + .Case("objc_autoreleasePoolPush", IC_AutoreleasepoolPush) + .Default(IC_CallOrUser); + + // One argument. + const Argument *A0 = AI++; + if (AI == AE) + // Argument is a pointer. + if (PointerType *PTy = dyn_cast<PointerType>(A0->getType())) { + Type *ETy = PTy->getElementType(); + // Argument is i8*. + if (ETy->isIntegerTy(8)) + return StringSwitch<InstructionClass>(F->getName()) + .Case("objc_retain", IC_Retain) + .Case("objc_retainAutoreleasedReturnValue", IC_RetainRV) + .Case("objc_retainBlock", IC_RetainBlock) + .Case("objc_release", IC_Release) + .Case("objc_autorelease", IC_Autorelease) + .Case("objc_autoreleaseReturnValue", IC_AutoreleaseRV) + .Case("objc_autoreleasePoolPop", IC_AutoreleasepoolPop) + .Case("objc_retainedObject", IC_NoopCast) + .Case("objc_unretainedObject", IC_NoopCast) + .Case("objc_unretainedPointer", IC_NoopCast) + .Case("objc_retain_autorelease", IC_FusedRetainAutorelease) + .Case("objc_retainAutorelease", IC_FusedRetainAutorelease) + .Case("objc_retainAutoreleaseReturnValue",IC_FusedRetainAutoreleaseRV) + .Default(IC_CallOrUser); + + // Argument is i8** + if (PointerType *Pte = dyn_cast<PointerType>(ETy)) + if (Pte->getElementType()->isIntegerTy(8)) + return StringSwitch<InstructionClass>(F->getName()) + .Case("objc_loadWeakRetained", IC_LoadWeakRetained) + .Case("objc_loadWeak", IC_LoadWeak) + .Case("objc_destroyWeak", IC_DestroyWeak) + .Default(IC_CallOrUser); + } + + // Two arguments, first is i8**. + const Argument *A1 = AI++; + if (AI == AE) + if (PointerType *PTy = dyn_cast<PointerType>(A0->getType())) + if (PointerType *Pte = dyn_cast<PointerType>(PTy->getElementType())) + if (Pte->getElementType()->isIntegerTy(8)) + if (PointerType *PTy1 = dyn_cast<PointerType>(A1->getType())) { + Type *ETy1 = PTy1->getElementType(); + // Second argument is i8* + if (ETy1->isIntegerTy(8)) + return StringSwitch<InstructionClass>(F->getName()) + .Case("objc_storeWeak", IC_StoreWeak) + .Case("objc_initWeak", IC_InitWeak) + .Case("objc_storeStrong", IC_StoreStrong) + .Default(IC_CallOrUser); + // Second argument is i8**. + if (PointerType *Pte1 = dyn_cast<PointerType>(ETy1)) + if (Pte1->getElementType()->isIntegerTy(8)) + return StringSwitch<InstructionClass>(F->getName()) + .Case("objc_moveWeak", IC_MoveWeak) + .Case("objc_copyWeak", IC_CopyWeak) + .Default(IC_CallOrUser); + } + + // Anything else. + return IC_CallOrUser; +} |