IntrinsicLowering.cpp File Reference

#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"

Go to the source code of this file.

Functions
template<class ArgIt >
static CallInst *	ReplaceCallWith (const char *NewFn, CallInst *CI, ArgIt ArgBegin, ArgIt ArgEnd, Type *RetTy)
	This function is used when we want to lower an intrinsic call to a call of an external function.
static Value *	LowerBSWAP (LLVMContext &Context, Value *V, Instruction *IP)
	Emit the code to lower bswap of V before the specified instruction IP.
static Value *	LowerCTPOP (LLVMContext &Context, Value *V, Instruction *IP)
	Emit the code to lower ctpop of V before the specified instruction IP.
static Value *	LowerCTLZ (LLVMContext &Context, Value *V, Instruction *IP)
	Emit the code to lower ctlz of V before the specified instruction IP.
static void	ReplaceFPIntrinsicWithCall (CallInst *CI, const char *Fname, const char *Dname, const char *LDname)

Function Documentation

LowerBSWAP()

static Value * LowerBSWAP ( LLVMContext &  Context, Value *  V, Instruction *  IP  )

static

Emit the code to lower bswap of V before the specified instruction IP.

Definition at line 53 of file IntrinsicLowering.cpp.

References assert(), llvm::IRBuilderBase::CreateAnd(), llvm::IRBuilderBase::CreateLShr(), llvm::IRBuilderBase::CreateOr(), llvm::IRBuilderBase::CreateShl(), and llvm_unreachable.

Referenced by llvm::IntrinsicLowering::LowerIntrinsicCall().

LowerCTLZ()

static Value * LowerCTLZ ( LLVMContext &  Context, Value *  V, Instruction *  IP  )

static

Emit the code to lower ctlz of V before the specified instruction IP.

Definition at line 187 of file IntrinsicLowering.cpp.

References llvm::IRBuilderBase::CreateLShr(), llvm::IRBuilderBase::CreateNot(), llvm::IRBuilderBase::CreateOr(), and LowerCTPOP().

Referenced by llvm::IntrinsicLowering::LowerIntrinsicCall(), and llvm::X86TargetLowering::LowerOperation().

LowerCTPOP()

static Value * LowerCTPOP ( LLVMContext &  Context, Value *  V, Instruction *  IP  )

static

Emit the code to lower ctpop of V before the specified instruction IP.

Definition at line 148 of file IntrinsicLowering.cpp.

References assert(), llvm::IRBuilderBase::CreateAdd(), llvm::IRBuilderBase::CreateAnd(), llvm::IRBuilderBase::CreateLShr(), LHS, and RHS.

Referenced by LowerCTLZ(), llvm::IntrinsicLowering::LowerIntrinsicCall(), llvm::ARMTargetLowering::LowerOperation(), and llvm::X86TargetLowering::LowerOperation().

ReplaceCallWith()

template<class ArgIt >

static CallInst * ReplaceCallWith ( const char *  NewFn, CallInst *  CI, ArgIt  ArgBegin, ArgIt  ArgEnd, Type *  RetTy  )

static

This function is used when we want to lower an intrinsic call to a call of an external function.

This handles hard cases such as when there was already a prototype for the external function, but that prototype doesn't match the arguments we expect to pass in.

Definition at line 30 of file IntrinsicLowering.cpp.

References llvm::IRBuilderBase::CreateCall(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), I, llvm::Value::replaceAllUsesWith(), RetTy, llvm::Value::setName(), and llvm::Value::use_empty().

Referenced by llvm::IntrinsicLowering::LowerIntrinsicCall(), and ReplaceFPIntrinsicWithCall().

ReplaceFPIntrinsicWithCall()

static void ReplaceFPIntrinsicWithCall ( CallInst *  CI, const char *  Fname, const char *  Dname, const char *  LDname  )

static

Definition at line 202 of file IntrinsicLowering.cpp.

References llvm::CallBase::arg_begin(), llvm::CallBase::arg_end(), llvm::Type::DoubleTyID, llvm::Type::FloatTyID, llvm::Type::FP128TyID, llvm::CallBase::getArgOperand(), llvm::Value::getContext(), llvm::Type::getDoubleTy(), llvm::Type::getFloatTy(), llvm::Value::getType(), llvm::Type::getTypeID(), llvm_unreachable, llvm::Type::PPC_FP128TyID, ReplaceCallWith(), and llvm::Type::X86_FP80TyID.

Referenced by llvm::IntrinsicLowering::LowerIntrinsicCall().