AMDGPUCodeGenPrepare.cpp File Reference

This pass does misc. More...

#include "AMDGPU.h"
#include "AMDGPUTargetMachine.h"
#include "SIModeRegisterDefaults.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/UniformityAnalysis.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstVisitor.h"
#include "llvm/IR/IntrinsicsAMDGPU.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Transforms/Utils/IntegerDivision.h"

Include dependency graph for AMDGPUCodeGenPrepare.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "amdgpu-codegenprepare"

Functions
static bool	promotedOpIsNSW (const Instruction &I)
static bool	promotedOpIsNUW (const Instruction &I)
static void	extractValues (IRBuilder<> &Builder, SmallVectorImpl< Value * > &Values, Value *V)
static Value *	insertValues (IRBuilder<> &Builder, Type *Ty, SmallVectorImpl< Value * > &Values)
static Value *	getMul24 (IRBuilder<> &Builder, Value *LHS, Value *RHS, unsigned Size, unsigned NumBits, bool IsSigned)
static SelectInst *	findSelectThroughCast (Value *V, CastInst *&Cast)
static Value *	optimizeWithRcp (Value *Num, Value *Den, bool AllowInaccurateRcp, bool RcpIsAccurate, IRBuilder<> &Builder, Module *Mod)
static Value *	optimizeWithFDivFast (Value *Num, Value *Den, float ReqdAccuracy, bool HasDenormals, IRBuilder<> &Builder, Module *Mod)
static bool	hasUnsafeFPMath (const Function &F)
static std::pair< Value *, Value * >	getMul64 (IRBuilder<> &Builder, Value *LHS, Value *RHS)
static Value *	getMulHu (IRBuilder<> &Builder, Value *LHS, Value *RHS)
static Value *	getSign32 (Value *V, IRBuilder<> &Builder, const DataLayout *DL)
	INITIALIZE_PASS_BEGIN (AMDGPUCodeGenPrepare, DEBUG_TYPE, "AMDGPU IR optimizations", false, false) INITIALIZE_PASS_END(AMDGPUCodeGenPrepare

Variables
	DEBUG_TYPE
AMDGPU IR	optimizations
AMDGPU IR	false

Detailed Description

This pass does misc.

AMDGPU optimizations on IR before instruction selection.

Definition in file AMDGPUCodeGenPrepare.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "amdgpu-codegenprepare"

Definition at line 32 of file AMDGPUCodeGenPrepare.cpp.

Function Documentation

extractValues()

static void extractValues ( IRBuilder<> &  Builder, SmallVectorImpl< Value * > &  Values, Value *  V  )

static

Definition at line 457 of file AMDGPUCodeGenPrepare.cpp.

References Builder, E, I, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

findSelectThroughCast()

static SelectInst * findSelectThroughCast ( Value *  V, CastInst *&  Cast  )

static

Definition at line 583 of file AMDGPUCodeGenPrepare.cpp.

References llvm::User::getOperand().

getMul24()

static Value * getMul24 ( IRBuilder<> &  Builder, Value *  LHS, Value *  RHS, unsigned  Size, unsigned  NumBits, bool  IsSigned  )

static

Definition at line 487 of file AMDGPUCodeGenPrepare.cpp.

References assert(), Builder, llvm::Hi, LHS, llvm::Lo, RHS, and Size.

Referenced by llvm::AMDGPUTargetLowering::performMulCombine().

getMul64()

static std::pair< Value *, Value * > getMul64 ( IRBuilder<> &  Builder, Value *  LHS, Value *  RHS  )

static

Definition at line 865 of file AMDGPUCodeGenPrepare.cpp.

References Builder, llvm::Hi, LHS, llvm::Lo, and RHS.

Referenced by getMulHu().

getMulHu()

static Value * getMulHu ( IRBuilder<> &  Builder, Value *  LHS, Value *  RHS  )

static

Definition at line 879 of file AMDGPUCodeGenPrepare.cpp.

References Builder, getMul64(), LHS, and RHS.

getSign32()

static Value * getSign32 ( Value *  V, IRBuilder<> &  Builder, const DataLayout *  DL  )

static

Definition at line 1053 of file AMDGPUCodeGenPrepare.cpp.

References Builder, llvm::computeKnownBits(), DL, llvm::Constant::getAllOnesValue(), llvm::Constant::getNullValue(), llvm::KnownBits::isNegative(), and llvm::KnownBits::isNonNegative().

hasUnsafeFPMath()

static bool hasUnsafeFPMath ( const Function &  F )

static

Definition at line 860 of file AMDGPUCodeGenPrepare.cpp.

References F, and llvm::Attribute::getValueAsBool().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	AMDGPUCodeGenPrepare	,
		DEBUG_TYPE	,
		"AMDGPU IR optimizations"	,
		false	,
		false
	)

insertValues()

static Value * insertValues ( IRBuilder<> &  Builder, Type *  Ty, SmallVectorImpl< Value * > &  Values  )

static

Definition at line 469 of file AMDGPUCodeGenPrepare.cpp.

References assert(), Builder, E, llvm::PoisonValue::get(), I, llvm::Type::isVectorTy(), and llvm::SmallVectorBase< Size_T >::size().

optimizeWithFDivFast()

static Value * optimizeWithFDivFast ( Value *  Num, Value *  Den, float  ReqdAccuracy, bool  HasDenormals, IRBuilder<> &  Builder, Module *  Mod  )

static

Definition at line 722 of file AMDGPUCodeGenPrepare.cpp.

References Builder, llvm::Intrinsic::getDeclaration(), llvm::Value::getType(), llvm::Type::isFloatTy(), and Mod.

optimizeWithRcp()

static Value * optimizeWithRcp ( Value *  Num, Value *  Den, bool  AllowInaccurateRcp, bool  RcpIsAccurate, IRBuilder<> &  Builder, Module *  Mod  )

static

Definition at line 663 of file AMDGPUCodeGenPrepare.cpp.

References Builder, llvm::Intrinsic::getDeclaration(), llvm::Value::getType(), and Mod.

promotedOpIsNSW()

static bool promotedOpIsNSW ( const Instruction &  I )

static

Definition at line 284 of file AMDGPUCodeGenPrepare.cpp.

References I.

promotedOpIsNUW()

static bool promotedOpIsNUW ( const Instruction &  I )

static

Definition at line 298 of file AMDGPUCodeGenPrepare.cpp.

References I.

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 1463 of file AMDGPUCodeGenPrepare.cpp.

false

AMDGPU IR false

Definition at line 1464 of file AMDGPUCodeGenPrepare.cpp.

optimizations

AMDGPU IR optimizations

Definition at line 1463 of file AMDGPUCodeGenPrepare.cpp.