llvm::ARMOverrideBypasses Class Reference

Post-process the DAG to create cluster edges between instrs that may be fused by the processor into a single operation. More...

#include "Target/ARM/ARMLatencyMutations.h"

Inheritance diagram for llvm::ARMOverrideBypasses:

Public Member Functions
	ARMOverrideBypasses (const ARMBaseInstrInfo *t, AAResults *a)
void	apply (ScheduleDAGInstrs *DAGInstrs) override
Public Member Functions inherited from llvm::ScheduleDAGMutation
virtual	~ScheduleDAGMutation ()=default
virtual void	apply (ScheduleDAGInstrs *DAG)=0

Protected Member Functions
unsigned	makeBundleAssumptions (SUnit &ISU, SDep &Dep)
bool	memoryRAWHazard (SUnit &ISU, SDep &Dep, unsigned latency)

Static Protected Member Functions
static void	setBidirLatencies (SUnit &SrcSU, SDep &SrcDep, unsigned latency)
static bool	zeroOutputDependences (SUnit &ISU, SDep &Dep)

Protected Attributes
const ARMBaseInstrInfo *	TII
AAResults *	AA
ScheduleDAGInstrs *	DAG = nullptr

Detailed Description

Post-process the DAG to create cluster edges between instrs that may be fused by the processor into a single operation.

Definition at line 27 of file ARMLatencyMutations.h.

Constructor & Destructor Documentation

ARMOverrideBypasses()

llvm::ARMOverrideBypasses::ARMOverrideBypasses ( const ARMBaseInstrInfo *  t, AAResults *  a  )

inline

Definition at line 29 of file ARMLatencyMutations.h.

Member Function Documentation

apply()

void llvm::ARMOverrideBypasses::apply ( ScheduleDAGInstrs *  DAGInstrs )

overridevirtual

Implements llvm::ScheduleDAGMutation.

Definition at line 953 of file ARMLatencyMutations.cpp.

References DAG, llvm::ScheduleDAG::ExitSU, llvm::SUnit::getInstr(), llvm::SUnit::isBoundaryNode(), and llvm::ScheduleDAG::SUnits.

makeBundleAssumptions()

unsigned llvm::ARMOverrideBypasses::makeBundleAssumptions ( SUnit &  ISU, SDep &  Dep  )

protected

Definition at line 529 of file ARMLatencyMutations.cpp.

References llvm::SUnit::getInstr(), llvm::MachineInstr::getOpcode(), llvm::SDep::getReg(), llvm::SDep::getSUnit(), llvm::SDep::isAssignedRegDep(), llvm::ARMBaseInstrInfo::isPredicated(), setBidirLatencies(), and TII.

memoryRAWHazard()

bool llvm::ARMOverrideBypasses::memoryRAWHazard ( SUnit &  ISU, SDep &  Dep, unsigned  latency  )

protected

Definition at line 553 of file ARMLatencyMutations.cpp.

References AA, llvm::AAResults::alias(), llvm::PseudoSourceValue::FixedStack, llvm::SUnit::getInstr(), llvm::SDep::getSUnit(), llvm::SDep::isNormalMemory(), llvm::MachineInstr::memoperands(), llvm::AliasResult::MustAlias, and setBidirLatencies().

setBidirLatencies()

void llvm::ARMOverrideBypasses::setBidirLatencies ( SUnit &  SrcSU, SDep &  SrcDep, unsigned  latency  )

staticprotected

Definition at line 491 of file ARMLatencyMutations.cpp.

References llvm::SDep::getSUnit(), llvm::SUnit::Preds, llvm::Reverse, llvm::SUnit::setDepthDirty(), llvm::SUnit::setHeightDirty(), and llvm::SDep::setLatency().

Referenced by makeBundleAssumptions(), memoryRAWHazard(), and zeroOutputDependences().

zeroOutputDependences()

bool llvm::ARMOverrideBypasses::zeroOutputDependences ( SUnit &  ISU, SDep &  Dep  )

staticprotected

Definition at line 513 of file ARMLatencyMutations.cpp.

References llvm::SDep::getKind(), llvm::SDep::Output, and setBidirLatencies().

Member Data Documentation

AA

AAResults* llvm::ARMOverrideBypasses::AA

protected

Definition at line 39 of file ARMLatencyMutations.h.

Referenced by memoryRAWHazard().

DAG

ScheduleDAGInstrs* llvm::ARMOverrideBypasses::DAG = nullptr

protected

Definition at line 40 of file ARMLatencyMutations.h.

Referenced by apply().

TII

const ARMBaseInstrInfo* llvm::ARMOverrideBypasses::TII

protected

Definition at line 38 of file ARMLatencyMutations.h.

Referenced by makeBundleAssumptions().

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

• lib/Target/ARM/ARMLatencyMutations.h
• lib/Target/ARM/ARMLatencyMutations.cpp