llvm::PhiLoweringHelper Class Reference

#include "Target/AMDGPU/SILowerI1Copies.h"

Public Member Functions
	PhiLoweringHelper (MachineFunction *MF, MachineDominatorTree *DT, MachinePostDominatorTree *PDT)
virtual	~PhiLoweringHelper ()=default
bool	lowerPhis ()
bool	isConstantLaneMask (Register Reg, bool &Val) const
MachineBasicBlock::iterator	getSaluInsertionAtEnd (MachineBasicBlock &MBB) const
	Return a point at the end of the given MBB to insert SALU instructions for lane mask calculation.
void	initializeLaneMaskRegisterAttributes (Register LaneMask)
bool	isLaneMaskReg (Register Reg) const
virtual void	markAsLaneMask (Register DstReg) const =0
virtual void	getCandidatesForLowering (SmallVectorImpl< MachineInstr * > &Vreg1Phis) const =0
virtual void	collectIncomingValuesFromPhi (const MachineInstr *MI, SmallVectorImpl< Incoming > &Incomings) const =0
virtual void	replaceDstReg (Register NewReg, Register OldReg, MachineBasicBlock *MBB)=0
virtual void	buildMergeLaneMasks (MachineBasicBlock &MBB, MachineBasicBlock::iterator I, const DebugLoc &DL, Register DstReg, Register PrevReg, Register CurReg)=0
virtual void	constrainAsLaneMask (Incoming &In)=0

Protected Attributes
bool	IsWave32 = false
MachineFunction *	MF = nullptr
MachineDominatorTree *	DT = nullptr
MachinePostDominatorTree *	PDT = nullptr
MachineRegisterInfo *	MRI = nullptr
const GCNSubtarget *	ST = nullptr
const SIInstrInfo *	TII = nullptr
MachineRegisterInfo::VRegAttrs	LaneMaskRegAttrs
DenseSet< Register >	PhiRegisters
Register	ExecReg
unsigned	MovOp
unsigned	AndOp
unsigned	OrOp
unsigned	XorOp
unsigned	AndN2Op
unsigned	OrN2Op

Detailed Description

Definition at line 37 of file SILowerI1Copies.h.

Constructor & Destructor Documentation

PhiLoweringHelper()

PhiLoweringHelper::PhiLoweringHelper	(	MachineFunction *	MF,
		MachineDominatorTree *	DT,
		MachinePostDominatorTree *	PDT
	)

Definition at line 449 of file SILowerI1Copies.cpp.

References AndN2Op, AndOp, ExecReg, llvm::GCNSubtarget::getInstrInfo(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::GCNSubtarget::isWave32(), IsWave32, MF, MovOp, MRI, OrN2Op, OrOp, ST, TII, and XorOp.

~PhiLoweringHelper()

virtual llvm::PhiLoweringHelper::~PhiLoweringHelper ( )

virtualdefault

Member Function Documentation

buildMergeLaneMasks()

virtual void llvm::PhiLoweringHelper::buildMergeLaneMasks ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  I, const DebugLoc &  DL, Register  DstReg, Register  PrevReg, Register  CurReg  )

pure virtual

Referenced by lowerPhis().

collectIncomingValuesFromPhi()

virtual void llvm::PhiLoweringHelper::collectIncomingValuesFromPhi ( const MachineInstr *  MI, SmallVectorImpl< Incoming > &  Incomings  ) const

pure virtual

Referenced by lowerPhis().

constrainAsLaneMask()

virtual void llvm::PhiLoweringHelper::constrainAsLaneMask ( Incoming &  In )

pure virtual

Referenced by lowerPhis().

getCandidatesForLowering()

virtual void llvm::PhiLoweringHelper::getCandidatesForLowering ( SmallVectorImpl< MachineInstr * > &  Vreg1Phis ) const

pure virtual

Referenced by lowerPhis().

getSaluInsertionAtEnd()

MachineBasicBlock::iterator PhiLoweringHelper::getSaluInsertionAtEnd

(

MachineBasicBlock &

MBB

)

const

Return a point at the end of the given MBB to insert SALU instructions for lane mask calculation.

Take terminators and SCC into account.

Definition at line 723 of file SILowerI1Copies.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::getFirstTerminator(), I, instrDefsUsesSCC(), llvm_unreachable, and MBB.

Referenced by lowerPhis().

initializeLaneMaskRegisterAttributes()

void llvm::PhiLoweringHelper::initializeLaneMaskRegisterAttributes ( Register  LaneMask )

inline

Definition at line 71 of file SILowerI1Copies.h.

References llvm::MachineRegisterInfo::getVRegAttrs(), LaneMaskRegAttrs, and MRI.

Referenced by lowerPhis().

isConstantLaneMask()

bool PhiLoweringHelper::isConstantLaneMask	(	Register	Reg,
		bool &	Val
	)		const

Definition at line 670 of file SILowerI1Copies.cpp.

References llvm::MachineRegisterInfo::getUniqueVRegDef(), isLaneMaskReg(), MI, MovOp, and MRI.

isLaneMaskReg()

bool llvm::PhiLoweringHelper::isLaneMaskReg ( Register  Reg ) const

inline

Definition at line 75 of file SILowerI1Copies.h.

References llvm::SIInstrInfo::getRegisterInfo(), llvm::AMDGPUSubtarget::getWavefrontSize(), llvm::SIRegisterInfo::isSGPRReg(), MRI, Reg, ST, and TII.

Referenced by isConstantLaneMask().

lowerPhis()

bool PhiLoweringHelper::lowerPhis

(

)

Definition at line 478 of file SILowerI1Copies.cpp.

References llvm::SSAUpdater::AddAvailableValue(), llvm::Incoming::Block, buildMergeLaneMasks(), llvm::SmallVectorImpl< T >::clear(), collectIncomingValuesFromPhi(), constrainAsLaneMask(), llvm::createLaneMaskReg(), llvm::dbgs(), DT, llvm::SmallVectorBase< Size_T >::empty(), llvm::MachinePostDominatorTree::findNearestCommonDominator(), getCandidatesForLowering(), llvm::DominatorTreeBase< NodeT, IsPostDom >::getNode(), getSaluInsertionAtEnd(), llvm::SSAUpdater::GetValueInMiddleOfBlock(), llvm::SSAUpdater::Initialize(), initializeLaneMaskRegisterAttributes(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), insertUndefLaneMask(), llvm::Register::isValid(), LaneMaskRegAttrs, LHS, LLVM_DEBUG, markAsLaneMask(), MBB, MF, MI, MRI, PDT, PhiRegisters, llvm::MachineBasicBlock::push_back(), llvm::Incoming::Reg, replaceDstReg(), RHS, llvm::sort(), TII, llvm::DominatorTreeBase< NodeT, IsPostDom >::updateDFSNumbers(), llvm::Incoming::UpdatedReg, and llvm::MachineRegisterInfo::use_instructions().

markAsLaneMask()

virtual void llvm::PhiLoweringHelper::markAsLaneMask ( Register  DstReg ) const

pure virtual

Referenced by lowerPhis().

replaceDstReg()

virtual void llvm::PhiLoweringHelper::replaceDstReg ( Register  NewReg, Register  OldReg, MachineBasicBlock *  MBB  )

pure virtual

Referenced by lowerPhis().

Member Data Documentation

AndN2Op

unsigned llvm::PhiLoweringHelper::AndN2Op

protected

Definition at line 62 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

AndOp

unsigned llvm::PhiLoweringHelper::AndOp

protected

Definition at line 59 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

DT

MachineDominatorTree* llvm::PhiLoweringHelper::DT = nullptr

protected

Definition at line 46 of file SILowerI1Copies.h.

Referenced by lowerPhis().

ExecReg

Register llvm::PhiLoweringHelper::ExecReg

protected

Definition at line 57 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

IsWave32

bool llvm::PhiLoweringHelper::IsWave32 = false

protected

Definition at line 44 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

LaneMaskRegAttrs

MachineRegisterInfo::VRegAttrs llvm::PhiLoweringHelper::LaneMaskRegAttrs

protected

Definition at line 51 of file SILowerI1Copies.h.

Referenced by initializeLaneMaskRegisterAttributes(), and lowerPhis().

MF

MachineFunction* llvm::PhiLoweringHelper::MF = nullptr

protected

Definition at line 45 of file SILowerI1Copies.h.

Referenced by lowerPhis(), and PhiLoweringHelper().

MovOp

unsigned llvm::PhiLoweringHelper::MovOp

protected

Definition at line 58 of file SILowerI1Copies.h.

Referenced by isConstantLaneMask(), and PhiLoweringHelper().

MRI

MachineRegisterInfo* llvm::PhiLoweringHelper::MRI = nullptr

protected

Definition at line 48 of file SILowerI1Copies.h.

Referenced by initializeLaneMaskRegisterAttributes(), isConstantLaneMask(), isLaneMaskReg(), lowerPhis(), and PhiLoweringHelper().

OrN2Op

unsigned llvm::PhiLoweringHelper::OrN2Op

protected

Definition at line 63 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

OrOp

unsigned llvm::PhiLoweringHelper::OrOp

protected

Definition at line 60 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

PDT

MachinePostDominatorTree* llvm::PhiLoweringHelper::PDT = nullptr

protected

Definition at line 47 of file SILowerI1Copies.h.

Referenced by lowerPhis().

PhiRegisters

DenseSet<Register> llvm::PhiLoweringHelper::PhiRegisters

protected

Definition at line 54 of file SILowerI1Copies.h.

Referenced by lowerPhis().

ST

const GCNSubtarget* llvm::PhiLoweringHelper::ST = nullptr

protected

Definition at line 49 of file SILowerI1Copies.h.

Referenced by isLaneMaskReg(), and PhiLoweringHelper().

TII

const SIInstrInfo* llvm::PhiLoweringHelper::TII = nullptr

protected

Definition at line 50 of file SILowerI1Copies.h.

Referenced by isLaneMaskReg(), lowerPhis(), and PhiLoweringHelper().

XorOp

unsigned llvm::PhiLoweringHelper::XorOp

protected

Definition at line 61 of file SILowerI1Copies.h.

Referenced by PhiLoweringHelper().

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The documentation for this class was generated from the following files:

• lib/Target/AMDGPU/SILowerI1Copies.h
• lib/Target/AMDGPU/SILowerI1Copies.cpp