LLVM: lib/CodeGen/GlobalMergeFunctions.cpp File Reference (original) (raw)

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Namespaces
namespace llvm
This is an optimization pass for GlobalISel generic memory operations.
Functions
STATISTIC (NumMergedFunctions, "Number of functions that are actually merged using function hash")
STATISTIC (NumAnalyzedModues, "Number of modules that are analyzed")
STATISTIC (NumAnalyzedFunctions, "Number of functions that are analyzed")
STATISTIC (NumEligibleFunctions, "Number of functions that are eligible")
static bool isCalleeOperand (const CallBase *CI, unsigned OpIdx)
Returns true if the \OpIdx operand of CI is the callee operand.
static bool canParameterizeCallOperand (const CallBase *CI, unsigned OpIdx)
bool isEligibleFunction (Function *F)
Returns true if function F is eligible for merging.
static bool isEligibleInstructionForConstantSharing (const Instruction *I)
static bool ignoreOp (const Instruction *I, unsigned OpIdx)
static Value * createCast (IRBuilder<> &Builder, Value *V, Type *DestTy)
static Function * createMergedFunction (FuncMergeInfo &FI, ArrayRef< Type * > ConstParamTypes, const ParamLocsVecTy &ParamLocsVec)
static void createThunk (FuncMergeInfo &FI, ArrayRef< Constant * > Params, Function *ToFunc)
static bool checkConstHashCompatible (const DenseMap< IndexPair, stable_hash > &OldInstOpndIndexToConstHash, const DenseMap< IndexPair, stable_hash > &CurrInstOpndIndexToConstHash)
static bool checkConstLocationCompatible (const StableFunctionMap::StableFunctionEntry &SF, const IndexInstrMap &IndexInstruction, const ParamLocsVecTy &ParamLocsVec)
static ParamLocsVecTy computeParamInfo (const SmallVector< std::unique_ptr< StableFunctionMap::StableFunctionEntry > > &SFS)
INITIALIZE_PASS_BEGIN (GlobalMergeFuncPassWrapper, "global-merge-func", "Global merge function pass", false, false) INITIALIZE_PASS_END(GlobalMergeFuncPassWrapper
ModulePass * llvm::createGlobalMergeFuncPass ()
This pass performs merging similar functions globally.
Variables
static cl::opt< bool > DisableCGDataForMerging ("disable-cgdata-for-merging", cl::Hidden, cl::desc("Disable codegen data for function merging. Local " "merging is still enabled within a module."), cl::init(false))
global merge func
global merge Global merge function pass
global merge Global merge function false

◆ DEBUG_TYPE

#define DEBUG_TYPE "global-merge-func"

◆ canParameterizeCallOperand()

◆ checkConstHashCompatible()

Definition at line 337 of file GlobalMergeFunctions.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert().

Referenced by llvm::GlobalMergeFunc::merge().

◆ checkConstLocationCompatible()

◆ computeParamInfo()

◆ createCast()

Definition at line 143 of file GlobalMergeFunctions.cpp.

References assert(), llvm::IRBuilderBase::CreateBitCast(), createCast(), llvm::IRBuilderBase::CreateExtractValue(), llvm::IRBuilderBase::CreateInsertValue(), llvm::IRBuilderBase::CreateIntToPtr(), llvm::IRBuilderBase::CreatePtrToInt(), llvm::PoisonValue::get(), llvm::Type::getStructElementType(), llvm::Type::getStructNumElements(), I, llvm::Type::isArrayTy(), llvm::Type::isIntegerTy(), llvm::Type::isPointerTy(), and llvm::Type::isStructTy().

Referenced by createCast(), createMergedFunction(), and createThunk().

◆ createMergedFunction()

Definition at line 218 of file GlobalMergeFunctions.cpp.

References llvm::Function::addFnAttr(), llvm::SmallVectorImpl< T >::append(), llvm::Function::arg_begin(), assert(), llvm::Function::begin(), llvm::ArrayRef< T >::begin(), llvm::Function::copyAttributesFrom(), llvm::Function::Create(), createCast(), llvm::GlobalValue::DefaultStorageClass, llvm::ArrayRef< T >::end(), FuncMergeInfo::F, llvm::FunctionType::get(), llvm::Function::getArg(), llvm::Value::getName(), llvm::Value::getType(), FuncMergeInfo::IndexInstruction, llvm::GlobalValue::InternalLinkage, llvm::MapVector< KeyT, ValueT, MapType, VectorType >::lookup(), llvm::GlobalMergeFunc::MergingInstanceSuffix, llvm::Value::replaceAllUsesWith(), llvm::GlobalValue::setDLLStorageClass(), llvm::GlobalValue::setLinkage(), llvm::Function::setSubprogram(), llvm::SmallVectorBase< Size_T >::size(), llvm::Function::splice(), and llvm::StringRef::str().

Referenced by llvm::GlobalMergeFunc::merge().

◆ createThunk()

Definition at line 283 of file GlobalMergeFunctions.cpp.

References assert(), llvm::BasicBlock::Create(), llvm::IRBuilderBase::CreateCall(), createCast(), llvm::IRBuilderBase::CreateRet(), llvm::IRBuilderBase::CreateRetVoid(), FuncMergeInfo::F, llvm::Function::getAttributes(), llvm::Function::getCallingConv(), llvm::Function::getFunctionType(), llvm::FunctionType::getNumParams(), llvm::CallBase::setAttributes(), llvm::CallBase::setCallingConv(), llvm::CallInst::setTailCallKind(), llvm::ArrayRef< T >::size(), llvm::CallingConv::SwiftTail, llvm::CallInst::TCK_MustTail, and llvm::CallInst::TCK_Tail.

Referenced by llvm::GlobalMergeFunc::merge().

◆ ignoreOp()

◆ INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN ( GlobalMergeFuncPassWrapper ,
"global-merge-func" ,
"Global merge function pass" ,
false ,
false
)

◆ isCalleeOperand()

◆ isEligibleFunction()

◆ isEligibleInstructionForConstantSharing()

◆ STATISTIC() [1/4]

STATISTIC ( NumAnalyzedFunctions ,
"Number of functions that are analyzed"
)

◆ STATISTIC() [2/4]

STATISTIC ( NumAnalyzedModues ,
"Number of modules that are analyzed"
)

◆ STATISTIC() [3/4]

STATISTIC ( NumEligibleFunctions ,
"Number of functions that are eligible"
)

◆ STATISTIC() [4/4]

STATISTIC ( NumMergedFunctions ,
"Number of functions that are actually merged using function hash"
)

◆ DisableCGDataForMerging

◆ false

◆ func

◆ pass