org.graalvm.compiler.loop.phases

Class LoopPeelingPhase

java.lang.Object

org.graalvm.compiler.phases.BasePhase<C>

org.graalvm.compiler.phases.common.PostRunCanonicalizationPhase<CoreProviders>

org.graalvm.compiler.loop.phases.LoopPhase<LoopPolicies>

org.graalvm.compiler.loop.phases.LoopPeelingPhase

All Implemented Interfaces:

PhaseSizeContract

public class LoopPeelingPhase
extends LoopPhase<LoopPolicies>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LoopPeelingPhase.Options

Nested classes/interfaces inherited from class org.graalvm.compiler.phases.BasePhase

BasePhase.ApplyScope, BasePhase.BasePhaseStatistics, BasePhase.NotApplicable, BasePhase.PhaseOptions, BasePhase.SharedGlobalPhaseState

Field Summary

Fields

Modifier and Type	Field and Description
static CounterKey	PEELED

Fields inherited from class org.graalvm.compiler.phases.common.PostRunCanonicalizationPhase

canonicalizer

Fields inherited from class org.graalvm.compiler.phases.BasePhase

ALWAYS_APPLICABLE

Constructor Summary

Constructors

Constructor and Description
LoopPeelingPhase(LoopPolicies policies, CanonicalizerPhase canonicalizer)

Method Summary

Modifier and Type	Method and Description
Optional<BasePhase.NotApplicable>	canApply(GraphState graphState) Checks if all the preconditions to BasePhase.apply(StructuredGraph, Object, boolean) the phase are met.
static boolean	canPeel(LoopEx loop) Determine if the given loop can be peeled.
float	codeSizeIncrease() Returns a factor >=1 that determines what the final code size in terms of the sum of the node code sizes NodeSize of all nodes is.
protected void	run(StructuredGraph graph, CoreProviders context)

Methods inherited from class org.graalvm.compiler.loop.phases.LoopPhase

getPolicies

Methods inherited from class org.graalvm.compiler.phases.common.PostRunCanonicalizationPhase

applyScope, updateGraphState

Methods inherited from class org.graalvm.compiler.phases.BasePhase

apply, apply, contractorName, equals, getName, hashCode, mustApply, shouldDumpAfterAtBasicLevel, shouldDumpBeforeAtBasicLevel

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.graalvm.compiler.phases.contract.PhaseSizeContract

checkContract

Field Detail

PEELED

public static final CounterKey PEELED

Constructor Detail

LoopPeelingPhase

public LoopPeelingPhase(LoopPolicies policies,
                        CanonicalizerPhase canonicalizer)

Method Detail

canPeel

public static boolean canPeel(LoopEx loop)

Determine if the given loop can be peeled.

canApply

public Optional<BasePhase.NotApplicable> canApply(GraphState graphState)

Description copied from class: BasePhase

Checks if all the preconditions to BasePhase.apply(StructuredGraph, Object, boolean) the phase are met.

Overrides:

canApply in class PostRunCanonicalizationPhase<CoreProviders>

Parameters:

graphState - represents the state of the StructuredGraph used for compilation and contains the required information to determine if a phase can be applied.

Returns:

Optional.empty() if all the checks pass, Optional#of(NotApplicable) containing why this phase is not applicable on this graphState otherwise.

run

protected void run(StructuredGraph graph,
                   CoreProviders context)

Specified by:

run in class BasePhase<CoreProviders>

codeSizeIncrease

public float codeSizeIncrease()

Description copied from interface: PhaseSizeContract

Returns a factor >=1 that determines what the final code size in terms of the sum of the node code sizes NodeSize of all nodes is.

Specified by:

codeSizeIncrease in interface PhaseSizeContract

Overrides:

codeSizeIncrease in class BasePhase<CoreProviders>

Returns:

a factor that determines how much the code size can be increased by this phase