com.oracle.graal.lir.constopt

Class ConstantLoadOptimization

java.lang.Object

com.oracle.graal.lir.phases.LIRPhase<PreAllocationOptimizationPhase.PreAllocationOptimizationContext>

com.oracle.graal.lir.phases.PreAllocationOptimizationPhase

com.oracle.graal.lir.constopt.ConstantLoadOptimization

public final class ConstantLoadOptimization
extends PreAllocationOptimizationPhase

This optimization tries to improve the handling of constants by replacing a single definition of a constant, which is potentially scheduled into a block with high probability, with one or more definitions in blocks with a lower probability.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	ConstantLoadOptimization.Optimization
static class	ConstantLoadOptimization.Options

Nested classes/interfaces inherited from class com.oracle.graal.lir.phases.PreAllocationOptimizationPhase

PreAllocationOptimizationPhase.PreAllocationOptimizationContext

Field Summary

Fields

Modifier and Type	Field and Description
private static DebugMetric	constantsOptimized
private static DebugMetric	constantsTotal
private static DebugMetric	materializeAtDefinitionSkipped
private static DebugMetric	phiConstantsSkipped
private static DebugMetric	singleUsageConstantsSkipped
private static DebugMetric	usageAtDefinitionSkipped

Constructor Summary

Constructors

Constructor and Description
ConstantLoadOptimization()

Method Summary

Modifier and Type	Method and Description
protected <B extends AbstractBlockBase<B>> void	run(TargetDescription target, LIRGenerationResult lirGenRes, List<B> codeEmittingOrder, List<B> linearScanOrder, LIRGeneratorTool lirGen)

Methods inherited from class com.oracle.graal.lir.phases.PreAllocationOptimizationPhase

run

Methods inherited from class com.oracle.graal.lir.phases.LIRPhase

apply, apply, createName, getName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

constantsTotal

private static final DebugMetric constantsTotal

phiConstantsSkipped

private static final DebugMetric phiConstantsSkipped

singleUsageConstantsSkipped

private static final DebugMetric singleUsageConstantsSkipped

usageAtDefinitionSkipped

private static final DebugMetric usageAtDefinitionSkipped

materializeAtDefinitionSkipped

private static final DebugMetric materializeAtDefinitionSkipped

constantsOptimized

private static final DebugMetric constantsOptimized

Constructor Detail

ConstantLoadOptimization

public ConstantLoadOptimization()

Method Detail

run

protected <B extends AbstractBlockBase<B>> void run(TargetDescription target,
                                                    LIRGenerationResult lirGenRes,
                                                    List<B> codeEmittingOrder,
                                                    List<B> linearScanOrder,
                                                    LIRGeneratorTool lirGen)

Specified by:

run in class PreAllocationOptimizationPhase