llvm::SwingSchedulerDDG Class Reference

This class provides APIs to retrieve edges from/to an SUnit node, with a particular focus on loop-carried dependencies. More...

#include "llvm/CodeGen/MachinePipeliner.h"

Public Member Functions
	SwingSchedulerDDG (std::vector< SUnit > &SUnits, SUnit *EntrySU, SUnit *ExitSU, const LoopCarriedEdges &LCE)
const EdgesType &	getInEdges (const SUnit *SU) const
const EdgesType &	getOutEdges (const SUnit *SU) const
bool	isValidSchedule (const SMSchedule &Schedule) const
	Check if Schedule doesn't violate the validation-only dependencies.

Detailed Description

This class provides APIs to retrieve edges from/to an SUnit node, with a particular focus on loop-carried dependencies.

Since SUnit is not designed to represent such edges, handling them directly using its APIs has required non-trivial logic in the past. This class serves as a wrapper around SUnit, offering a simpler interface for managing these dependencies.

Definition at line 233 of file MachinePipeliner.h.

Constructor & Destructor Documentation

SwingSchedulerDDG()

SwingSchedulerDDG::SwingSchedulerDDG	(	std::vector< SUnit > &	SUnits,
		SUnit *	EntrySU,
		SUnit *	ExitSU,
		const LoopCarriedEdges &	LCE )

Definition at line 4182 of file MachinePipeliner.cpp.

References llvm::SDep::Barrier, llvm::sampleprof::Base, and llvm::LoopCarriedEdges::getOrderDepOrNull().

Member Function Documentation

getInEdges()

const SwingSchedulerDDG::EdgesType & SwingSchedulerDDG::getInEdges

(

const SUnit *

SU

)

const

Definition at line 4210 of file MachinePipeliner.cpp.

Referenced by computePath(), llvm::SMSchedule::computeStart(), llvm::SMSchedule::computeUnpipelineableNodes(), llvm::SMSchedule::earliestCycleInChain(), llvm::SMSchedule::normalizeNonPipelinedInstructions(), llvm::SMSchedule::onlyHasLoopCarriedOutputOrOrderPreds(), llvm::SMSchedule::orderDependence(), pred_L(), and succ_L().

getOutEdges()

const SwingSchedulerDDG::EdgesType & SwingSchedulerDDG::getOutEdges

(

const SUnit *

SU

)

const

Definition at line 4215 of file MachinePipeliner.cpp.

Referenced by computePath(), llvm::SMSchedule::computeStart(), llvm::SMSchedule::computeUnpipelineableNodes(), llvm::SMSchedule::isValidSchedule(), llvm::SMSchedule::latestCycleInChain(), llvm::SMSchedule::normalizeNonPipelinedInstructions(), llvm::SMSchedule::orderDependence(), pred_L(), and succ_L().

isValidSchedule()

bool SwingSchedulerDDG::isValidSchedule

(

const SMSchedule &

Schedule

)

const

Check if Schedule doesn't violate the validation-only dependencies.

Definition at line 4220 of file MachinePipeliner.cpp.

References llvm::SMSchedule::cycleScheduled(), llvm::dbgs(), llvm::SMSchedule::getInitiationInterval(), II, LLVM_DEBUG, and llvm::SMSchedule::stageScheduled().

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

• include/llvm/CodeGen/MachinePipeliner.h
• lib/CodeGen/MachinePipeliner.cpp