LowerMemIntrinsics.cpp File Reference

#include "llvm/Transforms/Utils/LowerMemIntrinsics.h"
#include "llvm/Analysis/ScalarEvolution.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include <optional>

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Macros
#define	DEBUG_TYPE   "lower-mem-intrinsics"

Functions
static Value *	getRuntimeLoopCount (const DataLayout &DL, IRBuilderBase &B, Value *Len, Value *OpSize, unsigned OpSizeVal)
static Value *	getRuntimeLoopRemainder (const DataLayout &DL, IRBuilderBase &B, Value *Len, Value *OpSize, unsigned OpSizeVal)
static void	createMemMoveLoop (Instruction *InsertBefore, Value *SrcAddr, Value *DstAddr, Value *CopyLen, Align SrcAlign, Align DstAlign, bool SrcIsVolatile, bool DstIsVolatile, const TargetTransformInfo &TTI)
static void	createMemSetLoop (Instruction *InsertBefore, Value *DstAddr, Value *CopyLen, Value *SetValue, Align DstAlign, bool IsVolatile)
template<typename T >
static bool	canOverlap (MemTransferBase< T > *Memcpy, ScalarEvolution *SE)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "lower-mem-intrinsics"

Definition at line 20 of file LowerMemIntrinsics.cpp.

Function Documentation

canOverlap()

template<typename T >

static bool canOverlap ( MemTransferBase< T > *  Memcpy, ScalarEvolution *  SE  )

static

Definition at line 498 of file LowerMemIntrinsics.cpp.

References llvm::MemTransferBase< BaseCL >::getRawSource(), llvm::ScalarEvolution::getSCEV(), llvm::CmpInst::ICMP_NE, and llvm::ScalarEvolution::isKnownPredicateAt().

Referenced by llvm::expandMemCpyAsLoop().

createMemMoveLoop()

static void createMemMoveLoop ( Instruction *  InsertBefore, Value *  SrcAddr, Value *  DstAddr, Value *  CopyLen, Align  SrcAlign, Align  DstAlign, bool  SrcIsVolatile, bool  DstIsVolatile, const TargetTransformInfo &  TTI  )

static

Definition at line 369 of file LowerMemIntrinsics.cpp.

References llvm::PHINode::addIncoming(), llvm::commonAlignment(), llvm::BranchInst::Create(), llvm::BasicBlock::Create(), llvm::IRBuilderBase::CreateAdd(), llvm::IRBuilderBase::CreateAlignedLoad(), llvm::IRBuilderBase::CreateAlignedStore(), llvm::IRBuilderBase::CreateCondBr(), llvm::IRBuilderBase::CreateICmpEQ(), llvm::IRBuilderBase::CreateInBoundsGEP(), llvm::IRBuilderBase::CreatePHI(), llvm::IRBuilderBase::CreateSub(), DL, llvm::Instruction::eraseFromParent(), F, llvm::Type::getInt8Ty(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::BasicBlock::getParent(), llvm::Instruction::getParent(), llvm::BasicBlock::getTerminator(), llvm::Value::getType(), llvm::Value::setName(), and llvm::SplitBlockAndInsertIfThenElse().

Referenced by llvm::expandMemMoveAsLoop().

createMemSetLoop()

static void createMemSetLoop ( Instruction *  InsertBefore, Value *  DstAddr, Value *  CopyLen, Value *  SetValue, Align  DstAlign, bool  IsVolatile  )

static

Definition at line 458 of file LowerMemIntrinsics.cpp.

References llvm::PHINode::addIncoming(), llvm::commonAlignment(), llvm::BasicBlock::Create(), llvm::IRBuilderBase::CreateAdd(), llvm::IRBuilderBase::CreateAlignedStore(), llvm::IRBuilderBase::CreateCondBr(), llvm::IRBuilderBase::CreateICmpEQ(), llvm::IRBuilderBase::CreateICmpULT(), llvm::IRBuilderBase::CreateInBoundsGEP(), llvm::IRBuilderBase::CreatePHI(), DL, llvm::Instruction::eraseFromParent(), F, llvm::BasicBlock::getParent(), llvm::Instruction::getParent(), llvm::BasicBlock::getTerminator(), llvm::Value::getType(), SetValue(), and llvm::BasicBlock::splitBasicBlock().

Referenced by llvm::expandMemSetAsLoop().

getRuntimeLoopCount()

static Value * getRuntimeLoopCount ( const DataLayout &  DL, IRBuilderBase &  B, Value *  Len, Value *  OpSize, unsigned  OpSizeVal  )

static

Definition at line 160 of file LowerMemIntrinsics.cpp.

References B, llvm::isPowerOf2_32(), and llvm::Log2_32().

getRuntimeLoopRemainder()

static Value * getRuntimeLoopRemainder ( const DataLayout &  DL, IRBuilderBase &  B, Value *  Len, Value *  OpSize, unsigned  OpSizeVal  )

static

Definition at line 170 of file LowerMemIntrinsics.cpp.

References B, and llvm::isPowerOf2_32().