#include "llvm/Transforms/Utils/SimplifyLibCalls.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Analysis/BlockFrequencyInfo.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Analysis/CaptureTracking.h"
#include "llvm/Analysis/Loads.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Transforms/Utils/BuildLibCalls.h"
#include "llvm/Transforms/Utils/SizeOpts.h"

Include dependency graph for SimplifyLibCalls.cpp:

Functions
static bool	ignoreCallingConv (LibFunc Func)

static bool	isCallingConvCCompatible (CallInst *CI)

static bool	isOnlyUsedInEqualityComparison (Value V, Value With)
	Return true if it is only used in equality comparisons with With. More...

static bool	callHasFloatingPointArgument (const CallInst *CI)

static bool	callHasFP128Argument (const CallInst *CI)

static Value *	convertStrToNumber (CallInst *CI, StringRef &Str, int64_t Base)

static bool	isLocallyOpenedFile (Value File, CallInst CI, IRBuilder<> &B, const TargetLibraryInfo *TLI)

static bool	isOnlyUsedInComparisonWithZero (Value *V)

static bool	canTransformToMemCmp (CallInst CI, Value Str, uint64_t Len, const DataLayout &DL)

static void	annotateDereferenceableBytes (CallInst *CI, ArrayRef< unsigned > ArgNos, uint64_t DereferenceableBytes)

static void	annotateNonNullBasedOnAccess (CallInst *CI, ArrayRef< unsigned > ArgNos)

static void	annotateNonNullAndDereferenceable (CallInst CI, ArrayRef< unsigned > ArgNos, Value Size, const DataLayout &DL)

static Value *	optimizeMemCmpConstantSize (CallInst CI, Value LHS, Value *RHS, uint64_t Len, IRBuilder<> &B, const DataLayout &DL)

static Value *	replaceUnaryCall (CallInst *CI, IRBuilder<> &B, Intrinsic::ID IID)

static Value *	valueHasFloatPrecision (Value *Val)
	Return a variant of Val with float type. More...

static Value *	optimizeDoubleFP (CallInst *CI, IRBuilder<> &B, bool isBinary, bool isPrecise=false)
	Shrink double -> float functions. More...

static Value *	optimizeUnaryDoubleFP (CallInst *CI, IRBuilder<> &B, bool isPrecise=false)
	Shrink double -> float for unary functions. More...

static Value *	optimizeBinaryDoubleFP (CallInst *CI, IRBuilder<> &B, bool isPrecise=false)
	Shrink double -> float for binary functions. More...

static Value *	optimizeTrigReflections (CallInst *Call, LibFunc Func, IRBuilder<> &B)

static Value *	getPow (Value *InnerChain[33], unsigned Exp, IRBuilder<> &B)

static Value *	getIntToFPVal (Value *I2F, IRBuilder<> &B)

static Value *	getSqrtCall (Value V, AttributeList Attrs, bool NoErrno, Module M, IRBuilder<> &B, const TargetLibraryInfo *TLI)

static Value *	createPowWithIntegerExponent (Value Base, Value Expo, Module *M, IRBuilder<> &B)

static bool	isTrigLibCall (CallInst *CI)

static void	insertSinCosCall (IRBuilder<> &B, Function OrigCallee, Value Arg, bool UseFloat, Value &Sin, Value &Cos, Value *&SinCos)

static bool	isReportingError (Function Callee, CallInst CI, int StreamArg)

Variables
static cl::opt< bool >	EnableUnsafeFPShrink ("enable-double-float-shrink", cl::Hidden, cl::init(false), cl::desc("Enable unsafe double to float " "shrinking for math lib calls"))

Function Documentation

◆ annotateDereferenceableBytes()

static void annotateDereferenceableBytes	(	CallInst *	CI,
		ArrayRef< unsigned >	ArgNos,
		uint64_t	DereferenceableBytes
	)

static

◆ annotateNonNullAndDereferenceable()

static void annotateNonNullAndDereferenceable	(	CallInst *	CI,
		ArrayRef< unsigned >	ArgNos,
		Value *	Size,
		const DataLayout &	DL
	)

static

Definition at line 234 of file SimplifyLibCalls.cpp.

Referenced by optimizeMemCmpConstantSize().

◆ annotateNonNullBasedOnAccess()

static void annotateNonNullBasedOnAccess	(	CallInst *	CI,
		ArrayRef< unsigned >	ArgNos
	)

static

Definition at line 216 of file SimplifyLibCalls.cpp.

References llvm::CallBase::addParamAttr(), annotateDereferenceableBytes(), F(), llvm::CallBase::getArgOperand(), llvm::CallBase::getCaller(), llvm::Type::getPointerAddressSpace(), llvm::Value::getType(), llvm::NullPointerIsDefined(), and llvm::CallBase::paramHasAttr().

Referenced by annotateNonNullAndDereferenceable(), and isReportingError().

◆ callHasFloatingPointArgument()

static bool callHasFloatingPointArgument ( const CallInst * CI )

static

Definition at line 104 of file SimplifyLibCalls.cpp.

References llvm::any_of(), and llvm::User::operands().

Referenced by isReportingError().

◆ callHasFP128Argument()

static bool callHasFP128Argument ( const CallInst * CI )

static

Definition at line 110 of file SimplifyLibCalls.cpp.

References llvm::any_of(), and llvm::User::operands().

Referenced by isReportingError().

◆ canTransformToMemCmp()

static bool canTransformToMemCmp	(	CallInst *	CI,
		Value *	Str,
		uint64_t	Len,
		const DataLayout &	DL
	)

static

Definition at line 175 of file SimplifyLibCalls.cpp.

References llvm::Instruction::getFunction(), llvm::Function::hasFnAttribute(), llvm::isDereferenceableAndAlignedPointer(), and isOnlyUsedInComparisonWithZero().

Referenced by annotateNonNullAndDereferenceable().

◆ convertStrToNumber()

static Value* convertStrToNumber	(	CallInst *	CI,
		StringRef &	Str,
		int64_t	Base
	)

static

Definition at line 116 of file SimplifyLibCalls.cpp.

◆ createPowWithIntegerExponent()

static Value* createPowWithIntegerExponent	(	Value *	Base,
		Value *	Expo,
		Module *	M,
		IRBuilder<> &	B
	)

static

Definition at line 1616 of file SimplifyLibCalls.cpp.

References llvm::abs(), llvm::APFloat::add(), llvm::AMDGPU::HSAMD::Kernel::Key::Args, B, Callee, llvm::APFloatBase::cmpLessThan, llvm::APFloat::compare(), llvm::APFloat::convert(), llvm::APFloat::convertToDouble(), llvm::APFloat::convertToInteger(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateFDiv(), llvm::IRBuilder< T, Inserter >::CreateFMul(), llvm::CallBase::doesNotAccessMemory(), llvm::dyn_cast(), llvm::emitBinaryFloatFnCall(), llvm::emitUnaryFloatFnCall(), F(), llvm::ConstantInt::get(), llvm::ConstantFP::get(), llvm::CallBase::getArgOperand(), llvm::Function::getAttributes(), llvm::CallBase::getCalledFunction(), llvm::Intrinsic::getDeclaration(), llvm::Instruction::getFastMathFlags(), llvm::IRBuilderBase::getInt32Ty(), llvm::Function::getIntrinsicID(), getIntToFPVal(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::Instruction::getOpcode(), llvm::User::getOperand(), llvm::GlobalValue::getParent(), getPow(), llvm::APFloat::getSemantics(), getSqrtCall(), llvm::Value::getType(), llvm::Instruction::hasApproxFunc(), llvm::hasFloatFn(), I, llvm::APFloatBase::IEEEdouble(), llvm::Instruction::isFast(), llvm::APFloat::isInteger(), llvm::APFloat::isNegative(), llvm::PatternMatch::m_AnyZeroFP(), llvm::PatternMatch::m_APFloat(), llvm::PatternMatch::m_FMul(), llvm::PatternMatch::m_FPOne(), llvm::PatternMatch::m_SpecificFP(), llvm::PatternMatch::m_Value(), llvm::PatternMatch::match(), llvm::maxnum(), llvm::minnum(), Name, llvm::APFloatBase::opOK, optimizeBinaryDoubleFP(), optimizeUnaryDoubleFP(), llvm::MipsISD::Ret, llvm::APFloatBase::rmNearestTiesToEven, llvm::APFloatBase::rmTowardZero, llvm::FastMathFlags::setFast(), llvm::IRBuilderBase::setFastMathFlags(), llvm::FastMathFlags::setNoSignedZeros(), and llvm::StringRef::startswith().

◆ getIntToFPVal()

static Value* getIntToFPVal	(	Value *	I2F,
		IRBuilder<> &	B
	)

static

Definition at line 1397 of file SimplifyLibCalls.cpp.

References llvm::lltok::APFloat, llvm::AMDGPU::HSAMD::Kernel::Key::Attrs, B, llvm::APFloat::convert(), llvm::APFloat::convertToDouble(), llvm::APFloat::convertToFloat(), llvm::APFloat::convertToInteger(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateFMul(), llvm::IRBuilder< T, Inserter >::CreateSExt(), llvm::IRBuilder< T, Inserter >::CreateZExt(), llvm::CallBase::doesNotAccessMemory(), llvm::dyn_cast(), llvm::emitBinaryFloatFnCall(), llvm::emitUnaryFloatFnCall(), llvm::ConstantFP::get(), llvm::CallBase::getArgOperand(), llvm::Function::getAttributes(), llvm::CallBase::getAttributes(), llvm::CallBase::getCalledFunction(), llvm::Intrinsic::getDeclaration(), llvm::IRBuilderBase::getInt32Ty(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::Type::getPrimitiveSizeInBits(), llvm::APFloat::getSemantics(), llvm::Value::getType(), llvm::Instruction::hasApproxFunc(), llvm::hasFloatFn(), llvm::Instruction::hasNoInfs(), llvm::Instruction::hasNoNaNs(), llvm::Value::hasOneUse(), llvm::Type::isDoubleTy(), llvm::Instruction::isFast(), llvm::Type::isFloatTy(), llvm::APFloat::isInteger(), llvm::APFloat::isNegative(), llvm::APFloat::isNormal(), llvm::APInt::isPowerOf2(), llvm::log2(), llvm::APInt::logBase2(), llvm::PatternMatch::m_APFloat(), llvm::PatternMatch::m_SpecificFP(), llvm::PatternMatch::match(), llvm::Mod, N, llvm::APFloatBase::opOK, and llvm::APFloatBase::rmTowardZero.

Referenced by createPowWithIntegerExponent().

◆ getPow()

static Value* getPow	(	Value *	InnerChain[33],
		unsigned	Exp,
		IRBuilder<> &	B
	)

static

Definition at line 1371 of file SimplifyLibCalls.cpp.

References assert(), and llvm::IRBuilder< T, Inserter >::CreateFMul().

Referenced by createPowWithIntegerExponent().

◆ getSqrtCall()

static Value* getSqrtCall	(	Value *	V,
		AttributeList	Attrs,
		bool	NoErrno,
		Module *	M,
		IRBuilder<> &	B,
		const TargetLibraryInfo *	TLI
	)

static

◆ ignoreCallingConv()

static bool ignoreCallingConv ( LibFunc Func )

static

Definition at line 55 of file SimplifyLibCalls.cpp.

Referenced by isReportingError(), llvm::FortifiedLibCallSimplifier::optimizeCall(), and llvm::LibCallSimplifier::optimizeCall().

◆ insertSinCosCall()

static void insertSinCosCall	(	IRBuilder<> &	B,
		Function *	OrigCallee,
		Value *	Arg,
		bool	UseFloat,
		Value *&	Sin,
		Value *&	Cos,
		Value *&	SinCos
	)

static

Definition at line 1950 of file SimplifyLibCalls.cpp.

References Arg, assert(), llvm::BasicBlock::begin(), C, Callee, llvm::IRBuilder< T, Inserter >::CreateAdd(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateExtractElement(), llvm::IRBuilder< T, Inserter >::CreateExtractValue(), llvm::IRBuilder< T, Inserter >::CreateIntCast(), llvm::dyn_cast(), llvm::SmallVectorBase::empty(), F(), llvm::ConstantInt::get(), llvm::StructType::get(), llvm::VectorType::get(), llvm::CallBase::getArgOperand(), llvm::Function::getAttributes(), llvm::CallBase::getCalledFunction(), llvm::Intrinsic::getDeclaration(), llvm::Function::getEntryBlock(), llvm::Instruction::getFunction(), llvm::IRBuilderBase::GetInsertBlock(), llvm::IRBuilderBase::getInt32Ty(), llvm::Module::getOrInsertFunction(), llvm::BasicBlock::getParent(), llvm::GlobalValue::getParent(), llvm::Module::getTargetTriple(), llvm::IRBuilderBase::getTrue(), llvm::Value::getType(), llvm::Type::isFloatTy(), llvm::Type::isStructTy(), isTrigLibCall(), Name, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::IRBuilderBase::SetInsertPoint(), T, llvm::Value::users(), llvm::Triple::x86, and llvm::Triple::x86_64.

◆ isCallingConvCCompatible()

static bool isCallingConvCCompatible ( CallInst * CI )

static

Definition at line 60 of file SimplifyLibCalls.cpp.

References llvm::CallingConv::ARM_AAPCS, llvm::CallingConv::ARM_AAPCS_VFP, llvm::CallingConv::ARM_APCS, llvm::CallingConv::C, llvm::CallBase::getCallingConv(), llvm::CallBase::getFunctionType(), llvm::Instruction::getModule(), and llvm::Module::getTargetTriple().

Referenced by isReportingError(), llvm::FortifiedLibCallSimplifier::optimizeCall(), and llvm::LibCallSimplifier::optimizeCall().

◆ isLocallyOpenedFile()

static bool isLocallyOpenedFile	(	Value *	File,
		CallInst *	CI,
		IRBuilder<> &	B,
		const TargetLibraryInfo *	TLI
	)

static

Definition at line 141 of file SimplifyLibCalls.cpp.

References llvm::dyn_cast(), File, llvm::CallBase::getCalledFunction(), llvm::TargetLibraryInfo::getLibFunc(), llvm::TargetLibraryInfo::has(), llvm::inferLibFuncAttributes(), and llvm::PointerMayBeCaptured().

Referenced by isReportingError().

◆ isOnlyUsedInComparisonWithZero()

static bool isOnlyUsedInComparisonWithZero ( Value * V )

static

Definition at line 163 of file SimplifyLibCalls.cpp.

References C, and llvm::Value::users().

Referenced by canTransformToMemCmp().

◆ isOnlyUsedInEqualityComparison()

static bool isOnlyUsedInEqualityComparison	(	Value *	V,
		Value *	With
	)

static

Return true if it is only used in equality comparisons with With.

Definition at line 93 of file SimplifyLibCalls.cpp.

References llvm::Value::users().

Referenced by annotateNonNullAndDereferenceable().

◆ isReportingError()

static bool isReportingError	(	Function *	Callee,
		CallInst *	CI,
		int	StreamArg
	)

static

Definition at line 2185 of file SimplifyLibCalls.cpp.

References annotateNonNullBasedOnAccess(), assert(), B, llvm::AMDGPUISD::BFI, callHasFloatingPointArgument(), callHasFP128Argument(), llvm::castToCStr(), llvm::Instruction::clone(), llvm::IRBuilder< T, Inserter >::CreateAdd(), llvm::IRBuilder< T, Inserter >::CreateGEP(), llvm::IRBuilderBase::CreateGlobalString(), llvm::IRBuilder< T, Inserter >::CreateIntCast(), llvm::IRBuilder< T, Inserter >::CreateLoad(), llvm::IRBuilderBase::CreateMemCpy(), llvm::IRBuilder< T, Inserter >::CreateStore(), llvm::IRBuilder< T, Inserter >::CreateTrunc(), llvm::StringRef::drop_back(), llvm::dyn_cast(), llvm::emitFGetCUnlocked(), llvm::emitFGetSUnlocked(), llvm::emitFPutC(), llvm::emitFPutCUnlocked(), llvm::emitFPutS(), llvm::emitFPutSUnlocked(), llvm::emitFReadUnlocked(), llvm::emitFWrite(), llvm::emitFWriteUnlocked(), llvm::emitPutChar(), llvm::emitPutS(), llvm::emitStrLen(), llvm::StringRef::empty(), llvm::StringRef::find(), llvm::ConstantInt::get(), llvm::CallBase::getArgOperand(), llvm::Function::getAttributes(), llvm::CallBase::getCalledFunction(), llvm::getConstantStringInfo(), llvm::Value::getContext(), llvm::Instruction::getFunction(), llvm::Function::getFunctionType(), llvm::IRBuilderBase::GetInsertBlock(), llvm::IRBuilderBase::getInt32(), llvm::IRBuilderBase::getInt8(), llvm::IRBuilderBase::getInt8Ty(), llvm::Value::getName(), llvm::CallBase::getNumArgOperands(), llvm::User::getOperand(), llvm::Module::getOrInsertFunction(), llvm::Instruction::getParent(), llvm::BasicBlock::getParent(), llvm::GlobalValue::getParent(), llvm::LoadInst::getPointerOperand(), llvm::GetStringLength(), llvm::Value::getType(), llvm::ConstantInt::getZExtValue(), llvm::Function::hasOptSize(), ignoreCallingConv(), llvm::IRBuilder< T, Inserter >::Insert(), isCallingConvCCompatible(), llvm::GlobalValue::isDeclaration(), llvm::Type::isIntegerTy(), llvm::isKnownNonZero(), isLocallyOpenedFile(), llvm::Type::isPointerTy(), llvm::CallBase::isStrictFP(), N, llvm::StringRef::npos, optimizeBinaryDoubleFP(), optimizeTrigReflections(), optimizeUnaryDoubleFP(), replaceUnaryCall(), round(), llvm::CallBase::setCalledFunction(), llvm::shouldOptimizeForSize(), Size, llvm::StringRef::size(), and llvm::Value::use_empty().

◆ isTrigLibCall()

static bool isTrigLibCall ( CallInst * CI )

static

Definition at line 1942 of file SimplifyLibCalls.cpp.

References llvm::CallBase::hasFnAttr().

Referenced by insertSinCosCall().

◆ optimizeBinaryDoubleFP()

static Value* optimizeBinaryDoubleFP	(	CallInst *	CI,
		IRBuilder<> &	B,
		bool	isPrecise = `false`
	)

static

Shrink double -> float for binary functions.

Definition at line 1302 of file SimplifyLibCalls.cpp.

References assert(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateExtractValue(), llvm::IRBuilder< T, Inserter >::CreateFAdd(), llvm::IRBuilder< T, Inserter >::CreateFMul(), llvm::CallBase::getArgOperand(), llvm::Intrinsic::getDeclaration(), llvm::Instruction::getFastMathFlags(), llvm::Instruction::getModule(), llvm::CallBase::getNumArgOperands(), llvm::Value::getType(), llvm::Type::isArrayTy(), llvm::Instruction::isFast(), optimizeDoubleFP(), and llvm::IRBuilderBase::setFastMathFlags().

Referenced by createPowWithIntegerExponent(), and isReportingError().

◆ optimizeDoubleFP()

static Value* optimizeDoubleFP	(	CallInst *	CI,
		IRBuilder<> &	B,
		bool	isBinary,
		bool	isPrecise = `false`
	)

static

Shrink double -> float functions.

Definition at line 1238 of file SimplifyLibCalls.cpp.

References llvm::StringRef::back(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateFPExt(), llvm::dyn_cast(), llvm::emitBinaryFloatFnCall(), llvm::emitUnaryFloatFnCall(), llvm::StringRef::empty(), llvm::CallBase::getArgOperand(), llvm::Function::getAttributes(), llvm::CallBase::getCalledFunction(), llvm::Intrinsic::getDeclaration(), llvm::IRBuilderBase::getDoubleTy(), llvm::Instruction::getFastMathFlags(), llvm::IRBuilderBase::getFloatTy(), llvm::Instruction::getFunction(), llvm::Function::getIntrinsicID(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::Value::getType(), llvm::Type::isDoubleTy(), llvm::Type::isFloatTy(), llvm::Function::isIntrinsic(), llvm::IRBuilderBase::setFastMathFlags(), llvm::StringRef::size(), llvm::StringRef::startswith(), llvm::Value::users(), and valueHasFloatPrecision().

Referenced by optimizeBinaryDoubleFP(), and optimizeUnaryDoubleFP().

◆ optimizeMemCmpConstantSize()

static Value* optimizeMemCmpConstantSize	(	CallInst *	CI,
		Value *	LHS,
		Value *	RHS,
		uint64_t	Len,
		IRBuilder<> &	B,
		const DataLayout &	DL
	)

static

Definition at line 973 of file SimplifyLibCalls.cpp.

References annotateNonNullAndDereferenceable(), B, llvm::castToCStr(), llvm::ConstantFoldLoadFromConstPtr(), llvm::IRBuilder< T, Inserter >::CreateBitCast(), llvm::IRBuilder< T, Inserter >::CreateICmpNE(), llvm::IRBuilder< T, Inserter >::CreateInBoundsGEP(), llvm::IRBuilder< T, Inserter >::CreateIntCast(), llvm::IRBuilder< T, Inserter >::CreateLoad(), llvm::IRBuilderBase::CreateMemCpy(), llvm::IRBuilderBase::CreateMemMove(), llvm::IRBuilderBase::CreateMemSet(), llvm::IRBuilder< T, Inserter >::CreateSub(), llvm::IRBuilder< T, Inserter >::CreateZExt(), llvm::StringRef::data(), llvm::dyn_cast(), llvm::emitBCmp(), llvm::emitCalloc(), llvm::emitMalloc(), llvm::IntegerType::get(), llvm::ConstantInt::get(), llvm::CallBase::getArgOperand(), llvm::CallBase::getAttributes(), llvm::ConstantExpr::getBitCast(), llvm::getConstantStringInfo(), llvm::BasicBlock::getContext(), llvm::Value::getContext(), llvm::IRBuilderBase::GetInsertBlock(), llvm::IRBuilderBase::getInt8Ty(), llvm::DataLayout::getIntPtrType(), llvm::getKnownAlignment(), llvm::Constant::getNullValue(), llvm::Type::getPointerAddressSpace(), llvm::Type::getPointerTo(), llvm::DataLayout::getPrefTypeAlignment(), llvm::Value::getType(), llvm::DataLayout::isLegalInteger(), llvm::isOnlyUsedInZeroEqualityComparison(), memcmp, N, llvm::MipsISD::Ret, llvm::CallBase::setAttributes(), llvm::IRBuilderBase::SetInsertPoint(), Size, and llvm::StringRef::size().

◆ optimizeTrigReflections()

static Value* optimizeTrigReflections	(	CallInst *	Call,
		LibFunc	Func,
		IRBuilder<> &	B
	)

static

Definition at line 1336 of file SimplifyLibCalls.cpp.

References llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateFNeg(), llvm::CallBase::getArgOperand(), llvm::CallBase::getCalledFunction(), llvm::Instruction::getFastMathFlags(), llvm::PatternMatch::m_FNeg(), llvm::PatternMatch::m_OneUse(), llvm::PatternMatch::m_Value(), llvm::PatternMatch::match(), llvm::IRBuilderBase::setFastMathFlags(), and X.

Referenced by isReportingError().

◆ optimizeUnaryDoubleFP()

static Value* optimizeUnaryDoubleFP	(	CallInst *	CI,
		IRBuilder<> &	B,
		bool	isPrecise = `false`
	)

static

Shrink double -> float for unary functions.

Definition at line 1296 of file SimplifyLibCalls.cpp.

References optimizeDoubleFP().

Referenced by createPowWithIntegerExponent(), and isReportingError().

◆ replaceUnaryCall()

static Value* replaceUnaryCall	(	CallInst *	CI,
		IRBuilder<> &	B,
		Intrinsic::ID	IID
	)

static

Definition at line 1202 of file SimplifyLibCalls.cpp.

References llvm::IRBuilder< T, Inserter >::CreateCall(), F(), llvm::CallBase::getArgOperand(), llvm::Intrinsic::getDeclaration(), llvm::Instruction::getFastMathFlags(), llvm::Instruction::getModule(), llvm::Value::getType(), llvm::IRBuilderBase::setFastMathFlags(), and llvm::Value::takeName().

Referenced by isReportingError().

◆ valueHasFloatPrecision()

static Value* valueHasFloatPrecision ( Value * Val )

static

Return a variant of Val with float type.

Currently this works in two cases: If Val is an FPExtension of a float value to something bigger, simply return the operand. If Val is a ConstantFP but can be converted to a float ConstantFP without loss of precision do so.

Definition at line 1220 of file SimplifyLibCalls.cpp.

References llvm::APFloat::convert(), F(), llvm::ConstantFP::get(), llvm::Value::getType(), llvm::APFloatBase::IEEEsingle(), llvm::Type::isFloatTy(), and llvm::APFloatBase::rmNearestTiesToEven.

Referenced by optimizeDoubleFP().

Variable Documentation

◆ EnableUnsafeFPShrink

cl::opt<bool> EnableUnsafeFPShrink("enable-double-float-shrink", cl::Hidden, cl::init(false), cl::desc("Enable unsafe double to float " "shrinking for math lib calls"))

static

Referenced by llvm::LibCallSimplifier::optimizeCall().

Functions

Variables

Function Documentation

◆ annotateDereferenceableBytes()

◆ annotateNonNullAndDereferenceable()

◆ annotateNonNullBasedOnAccess()

◆ callHasFloatingPointArgument()

◆ callHasFP128Argument()

◆ canTransformToMemCmp()

◆ convertStrToNumber()

◆ createPowWithIntegerExponent()

◆ getIntToFPVal()

◆ getPow()

◆ getSqrtCall()

◆ ignoreCallingConv()

◆ insertSinCosCall()

◆ isCallingConvCCompatible()

◆ isLocallyOpenedFile()

◆ isOnlyUsedInComparisonWithZero()

◆ isOnlyUsedInEqualityComparison()

◆ isReportingError()

◆ isTrigLibCall()

◆ optimizeBinaryDoubleFP()

◆ optimizeDoubleFP()

◆ optimizeMemCmpConstantSize()

◆ optimizeTrigReflections()

◆ optimizeUnaryDoubleFP()

◆ replaceUnaryCall()

◆ valueHasFloatPrecision()

Variable Documentation

◆ EnableUnsafeFPShrink