ExpandLargeDivRem.cpp File Reference

#include "llvm/CodeGen/ExpandLargeDivRem.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/PassManager.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/Utils/IntegerDivision.h"

Go to the source code of this file.

Functions
static bool	isConstantPowerOfTwo (llvm::Value *V, bool SignedOp)
static bool	isSigned (unsigned int Opcode)
static void	scalarize (BinaryOperator *BO, SmallVectorImpl< BinaryOperator * > &Replace)
static bool	runImpl (Function &F, const TargetLowering &TLI)
	INITIALIZE_PASS_BEGIN (ExpandLargeDivRemLegacyPass, "expand-large-div-rem", "Expand large div/rem", false, false) INITIALIZE_PASS_END(ExpandLargeDivRemLegacyPass

Variables
static cl::opt< unsigned >	ExpandDivRemBits ("expand-div-rem-bits", cl::Hidden, cl::init(llvm::IntegerType::MAX_INT_BITS), cl::desc("div and rem instructions on integers with " "more than <N> bits are expanded."))
expand large div	rem
expand large div Expand large div	false

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	ExpandLargeDivRemLegacyPass	,
		"expand-large-div-rem"	,
		"Expand large div/rem"	,
		false	,
		false
	)

isConstantPowerOfTwo()

static bool isConstantPowerOfTwo ( llvm::Value *  V, bool  SignedOp  )

static

Definition at line 42 of file ExpandLargeDivRem.cpp.

References llvm::CallingConv::C, llvm::APInt::isNegative(), and llvm::APInt::isPowerOf2().

Referenced by runImpl().

isSigned()

static bool isSigned ( unsigned int  Opcode )

static

Definition at line 53 of file ExpandLargeDivRem.cpp.

Referenced by llvm::APInt::APInt(), llvm::detail::IEEEFloat::convertFromAPInt(), llvm::detail::IEEEFloat::convertFromSignExtendedInteger(), llvm::detail::IEEEFloat::convertFromZeroExtendedInteger(), llvm::detail::IEEEFloat::convertToInteger(), llvm::IRBuilderBase::CreateIntCast(), llvm::CastInst::CreateIntegerCast(), DecodeBFLabelOperand(), llvm::InstCombinerImpl::EvaluateInDifferentType(), llvm::TargetLowering::expandMULO(), llvm::TargetLowering::expandREM(), llvm::ConstantInt::get(), llvm::ScalarEvolution::getConstant(), getDivRemArgList(), getDivRemLibcall(), llvm::APSInt::getExtValue(), llvm::HexagonInstrInfo::getMaxValue(), llvm::HexagonInstrInfo::getMinValue(), llvm::InstCombinerImpl::insertRangeTest(), isDivRemLibcallAvailable(), isExtendedBUILD_VECTOR(), llvm::ARMBaseRegisterInfo::isFrameOffsetLegal(), llvm::APSInt::isNegative(), llvm::APSInt::isRepresentableByInt64(), llvm::TargetTransformInfoImplBase::minRequiredElementSize(), PerformVCVTCombine(), PerformVMulVCTPCombine(), llvm::APInt::print(), llvm::APInt::roundToDouble(), runImpl(), llvm::APFloatBase::semanticsIntSizeInBits(), llvm::APSInt::toString(), and llvm::InstCombinerImpl::tryFoldInstWithCtpopWithNot().

runImpl()

static bool runImpl ( Function &  F, const TargetLowering &  TLI  )

static

Definition at line 80 of file ExpandLargeDivRem.cpp.

References llvm::SmallVectorBase< Size_T >::empty(), llvm::expandDivision(), ExpandDivRemBits, llvm::expandRemainder(), F, llvm::TargetLoweringBase::getMaxDivRemBitWidthSupported(), I, instructions, isConstantPowerOfTwo(), isSigned(), llvm::IntegerType::MAX_INT_BITS, Modified, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and scalarize().

Referenced by llvm::ExpandLargeDivRemPass::run(), llvm::ExpandLargeFpConvertPass::run(), llvm::ReplaceWithVeclib::run(), llvm::AggressiveInstCombinePass::run(), llvm::AnnotationRemarksPass::run(), llvm::CorrelatedValuePropagationPass::run(), llvm::InstSimplifyPass::run(), llvm::LoopDistributePass::run(), llvm::MergeICmpsPass::run(), llvm::ScalarizeMaskedMemIntrinPass::run(), llvm::InjectTLIMappings::run(), llvm::LowerInvokePass::run(), llvm::UnifyLoopExitsPass::run(), llvm::SLPVectorizerPass::run(), llvm::ExpandMemCmpPass::run(), llvm::IndirectBrExpandPass::run(), llvm::LibCallsShrinkWrapPass::run(), llvm::LoopVersioningPass::run(), llvm::ObjCARCExpandPass::run(), llvm::FinalizeISelPass::run(), llvm::DeadMachineInstructionElimPass::run(), llvm::ObjCARCAPElimPass::run(), llvm::LowerGlobalDtorsPass::run(), llvm::RewriteSymbolPass::run(), llvm::AMDGPUAttributorPass::run(), llvm::JMCInstrumenterPass::run(), and llvm::ReplaceWithVeclibLegacy::runOnFunction().

scalarize()

static void scalarize ( BinaryOperator *  BO, SmallVectorImpl< BinaryOperator * > &  Replace  )

static

Definition at line 57 of file ExpandLargeDivRem.cpp.

References llvm::IRBuilderBase::CreateBinOp(), llvm::IRBuilderBase::CreateExtractElement(), llvm::IRBuilderBase::CreateInsertElement(), llvm::User::dropAllReferences(), llvm::Instruction::eraseFromParent(), llvm::PoisonValue::get(), llvm::BinaryOperator::getOpcode(), llvm::User::getOperand(), llvm::Value::getType(), Idx, LHS, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::Value::replaceAllUsesWith(), and RHS.

Referenced by runImpl(), and llvm::SPIRVLegalizerInfo::SPIRVLegalizerInfo().

Variable Documentation

ExpandDivRemBits

cl::opt< unsigned > ExpandDivRemBits("expand-div-rem-bits", cl::Hidden, cl::init(llvm::IntegerType::MAX_INT_BITS), cl::desc("div and rem instructions on integers with " "more than <N> bits are expanded.")) ( "expand-div-rem-bits"  , cl::Hidden  , cl::init(llvm::IntegerType::MAX_INT_BITS)  , cl::desc("div and rem instructions on integers with " "more than <N> bits are expanded.")    )

static

Referenced by runImpl().

false

expand large div Expand large div false

Definition at line 179 of file ExpandLargeDivRem.cpp.

rem

expand large div Expand large div rem

Definition at line 178 of file ExpandLargeDivRem.cpp.

Referenced by llvm::SchedBoundary::init().