org.graalvm.compiler.phases.common

Class DeadCodeEliminationPhase

java.lang.Object

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

org.graalvm.compiler.phases.Phase

org.graalvm.compiler.phases.common.DeadCodeEliminationPhase

All Implemented Interfaces:

PhaseSizeContract

public class DeadCodeEliminationPhase
extends Phase

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DeadCodeEliminationPhase.Optionality
static class	DeadCodeEliminationPhase.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 inherited from class org.graalvm.compiler.phases.BasePhase

ALWAYS_APPLICABLE

Constructor Summary

Constructors

Constructor and Description
DeadCodeEliminationPhase() Creates a dead code elimination phase that will be run irrespective of DeadCodeEliminationPhase.Options.ReduceDCE.
DeadCodeEliminationPhase(DeadCodeEliminationPhase.Optionality optionality) Creates a dead code elimination phase that will be run only if it is non-optional or DeadCodeEliminationPhase.Options.ReduceDCE is false.

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.
void	run(StructuredGraph graph)

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

apply, apply, run

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

apply, apply, applyScope, codeSizeIncrease, contractorName, equals, getName, hashCode, mustApply, shouldDumpAfterAtBasicLevel, shouldDumpBeforeAtBasicLevel, updateGraphState

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

DeadCodeEliminationPhase

public DeadCodeEliminationPhase()

Creates a dead code elimination phase that will be run irrespective of DeadCodeEliminationPhase.Options.ReduceDCE.

DeadCodeEliminationPhase

public DeadCodeEliminationPhase(DeadCodeEliminationPhase.Optionality optionality)

Creates a dead code elimination phase that will be run only if it is non-optional or DeadCodeEliminationPhase.Options.ReduceDCE is false.

Method Detail

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 BasePhase<Object>

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

public void run(StructuredGraph graph)

Specified by:

run in class Phase