SIOptimizeExecMaskingPreRA.cpp File Reference

This pass performs exec mask handling peephole optimizations which needs to be done before register allocation to reduce register pressure. More...

#include "AMDGPU.h"
#include "GCNSubtarget.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "llvm/CodeGen/LiveIntervals.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/InitializePasses.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "si-optimize-exec-masking-pre-ra"

Functions
	INITIALIZE_PASS_BEGIN (SIOptimizeExecMaskingPreRA, DEBUG_TYPE, "SI optimize exec mask operations pre-RA", false, false) INITIALIZE_PASS_END(SIOptimizeExecMaskingPreRA
static bool	isDefBetween (const LiveRange &LR, SlotIndex AndIdx, SlotIndex SelIdx)
static bool	isDefBetween (const SIRegisterInfo &TRI, LiveIntervals *LIS, Register Reg, const MachineInstr &Sel, const MachineInstr &And)

Variables
	DEBUG_TYPE
SI optimize exec mask operations pre	RA
SI optimize exec mask operations pre	false

Detailed Description

This pass performs exec mask handling peephole optimizations which needs to be done before register allocation to reduce register pressure.

Definition in file SIOptimizeExecMaskingPreRA.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "si-optimize-exec-masking-pre-ra"

Definition at line 24 of file SIOptimizeExecMaskingPreRA.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	SIOptimizeExecMaskingPreRA	,
		DEBUG_TYPE	,
		"SI optimize exec mask operations pre-RA"	,
		false	,
		false
	)

isDefBetween() [1/2]

static bool isDefBetween ( const LiveRange &  LR, SlotIndex  AndIdx, SlotIndex  SelIdx  )

static

Definition at line 83 of file SIOptimizeExecMaskingPreRA.cpp.

References llvm::LiveQueryResult::isKill(), llvm::LiveRange::Query(), llvm::LiveQueryResult::valueIn(), and llvm::LiveQueryResult::valueOut().

Referenced by isDefBetween().

isDefBetween() [2/2]

static bool isDefBetween ( const SIRegisterInfo &  TRI, LiveIntervals *  LIS, Register  Reg, const MachineInstr &  Sel, const MachineInstr &  And  )

static

Definition at line 90 of file SIOptimizeExecMaskingPreRA.cpp.

References llvm::And, llvm::LiveIntervals::getInstructionIndex(), llvm::LiveIntervals::getInterval(), llvm::SlotIndex::getRegSlot(), llvm::LiveIntervals::getRegUnit(), isDefBetween(), and TRI.

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 70 of file SIOptimizeExecMaskingPreRA.cpp.

false

SI optimize exec mask operations pre false

Definition at line 71 of file SIOptimizeExecMaskingPreRA.cpp.

RA

SI optimize exec mask operations pre RA

Definition at line 71 of file SIOptimizeExecMaskingPreRA.cpp.

Referenced by llvm::rdf::PhysicalRegisterInfo::alias(), llvm::FunctionComparator::cmpConstants(), llvm::rdf::DeadCodeElimination::collect(), CompareSCEVComplexity(), CompareValueComplexity(), llvm::rdf::Liveness::computeLiveIns(), createPPCMCRegisterInfo(), createX86MCRegisterInfo(), llvm::MipsSEFrameLowering::determineCalleeSaves(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::rdf::DeadCodeElimination::erase(), getExactSDiv(), llvm::rdf::RefNode::getNextRef(), llvm::rdf::DataFlowGraph::getNextRelated(), llvm::rdf::DataFlowGraph::getNextShadow(), llvm::rdf::DataFlowGraph::getRelatedRefs(), INITIALIZE_PASS(), llvm::MCRegisterInfo::InitMCRegisterInfo(), llvm::rdf::RegisterAggr::isCoverOf(), llvm::rdf::printRefHeader(), llvm::object::resolveRISCV(), llvm::InstCombinerImpl::SimplifyDemandedUseBits(), llvm::ScalarEvolution::SimplifyICmpOperands(), uses(), and value().