org.graalvm.compiler.loop.phases

Class LoopSafepointEliminationPhase

java.lang.Object

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

org.graalvm.compiler.loop.phases.LoopSafepointEliminationPhase

All Implemented Interfaces:

PhaseSizeContract

Direct Known Subclasses:

TruffleLoopSafepointEliminationPhase

public class LoopSafepointEliminationPhase
extends BasePhase<MidTierContext>

Nested Class Summary

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

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

Constructor Summary

Constructors

Constructor and Description
LoopSafepointEliminationPhase()

Method Summary

Modifier and Type	Method and Description
protected boolean	allowGuestSafepoints() Determines whether guest safepoints should be allowed at all.
static boolean	canDisableSafepoint(FixedNode node, CoreProviders context)
static boolean	loopIsIn32BitRange(LoopEx loop)
protected boolean	onCallInLoop(LoopEndNode loopEnd, FixedNode currentCallNode) To be implemented by subclasses to perform additional checks.
protected void	onSafepointDisabledLoopBegin(LoopEx loop) To be implemented by subclasses to compute additional fields.
protected void	run(StructuredGraph graph, MidTierContext context)

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

apply, apply, applyScope, codeSizeIncrease, contractorName, equals, getName, hashCode, 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

Constructor Detail

LoopSafepointEliminationPhase

public LoopSafepointEliminationPhase()

Method Detail

onCallInLoop

protected boolean onCallInLoop(LoopEndNode loopEnd,
                               FixedNode currentCallNode)

To be implemented by subclasses to perform additional checks. Returns true if the safepoint was also disabled in subclasses and we therefore don't need to continue traversing.

onSafepointDisabledLoopBegin

protected void onSafepointDisabledLoopBegin(LoopEx loop)

To be implemented by subclasses to compute additional fields.

allowGuestSafepoints

protected boolean allowGuestSafepoints()

Determines whether guest safepoints should be allowed at all. To be implemented by subclasses. The default implementation returns false, leading to guest safepoints being disabled for all loops in the graph.

loopIsIn32BitRange

public static boolean loopIsIn32BitRange(LoopEx loop)

run

protected final void run(StructuredGraph graph,
                         MidTierContext context)

Specified by:

run in class BasePhase<MidTierContext>

canDisableSafepoint

public static boolean canDisableSafepoint(FixedNode node,
                                          CoreProviders context)