com.oracle.svm.core.genscavenge.graal

Class InsertWriteBarrierPhase

java.lang.Object

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

com.oracle.svm.core.genscavenge.graal.InsertWriteBarrierPhase

All Implemented Interfaces:

org.graalvm.compiler.phases.contract.PhaseSizeContract

public class InsertWriteBarrierPhase
extends org.graalvm.compiler.phases.BasePhase<org.graalvm.compiler.phases.tiers.MidTierContext>

Walk the graph and find WriteNodes with barriers and turn them into WriteNodes without barriers and separate barrier nodes.

Nested Class Summary

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

org.graalvm.compiler.phases.BasePhase.BasePhaseStatistics, org.graalvm.compiler.phases.BasePhase.PhaseOptions

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	InsertWriteBarrierPhase() Constructor for sub-classes.

Method Summary

Modifier and Type	Method and Description
protected void	addPostWriteBarrier(org.graalvm.compiler.nodes.StructuredGraph graph, org.graalvm.compiler.nodes.memory.FixedAccessNode node, org.graalvm.compiler.nodes.memory.address.AddressNode address)
boolean	checkContract()
static InsertWriteBarrierPhase	factory()
protected void	rewriteWithBarriers(org.graalvm.compiler.nodes.StructuredGraph graph, org.graalvm.compiler.nodes.java.AbstractCompareAndSwapNode node) AbstractCompareAndSwapNode has The object to which the write is done, in node.object(), the value to be written, in node.getNewValue(), the location within the object for the write, in node.location(), whether a precise or imprecise barrier is needed, in node.getBarrierType(),.
protected void	rewriteWithBarriers(org.graalvm.compiler.nodes.StructuredGraph graph, org.graalvm.compiler.nodes.java.LoweredAtomicReadAndWriteNode node) LoweredAtomicReadAndWriteNode has The object to which the write is done, in node.object(), the value to be written, in node.getNewValue(), the location within the object for the write, in node.location(), whether a precise or imprecise barrier is needed, in node.getBarrierType(),.
protected void	rewriteWithBarriers(org.graalvm.compiler.nodes.StructuredGraph graph, org.graalvm.compiler.nodes.memory.WriteNode node) WriteNode has The object to which the write is done, in node.object(), the value to be written, in node.value(), the location within the object for the write, in node.location(), whether a precise or imprecise barrier is needed, in node.getBarrierType(), and whether the write is an initialization, in node.isInitialization().
protected void	run(org.graalvm.compiler.nodes.StructuredGraph graph, org.graalvm.compiler.phases.tiers.MidTierContext context)

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

apply, apply, codeSizeIncrease, contractorName, getName, shouldDumpAfterAtBasicLevel, shouldDumpBeforeAtBasicLevel

Methods inherited from class java.lang.Object

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

Constructor Detail

InsertWriteBarrierPhase

protected InsertWriteBarrierPhase()

Constructor for sub-classes.

Method Detail

factory

public static InsertWriteBarrierPhase factory()

checkContract

public boolean checkContract()

run

protected void run(org.graalvm.compiler.nodes.StructuredGraph graph,
                   org.graalvm.compiler.phases.tiers.MidTierContext context)

Specified by:

run in class org.graalvm.compiler.phases.BasePhase<org.graalvm.compiler.phases.tiers.MidTierContext>

rewriteWithBarriers

protected void rewriteWithBarriers(org.graalvm.compiler.nodes.StructuredGraph graph,
                                   org.graalvm.compiler.nodes.memory.WriteNode node)

WriteNode has

• The object to which the write is done, in node.object(),
• the value to be written, in node.value(),
• the location within the object for the write, in node.location(),
• whether a precise or imprecise barrier is needed, in node.getBarrierType(),
and
• whether the write is an initialization, in node.isInitialization()
.

rewriteWithBarriers

protected void rewriteWithBarriers(org.graalvm.compiler.nodes.StructuredGraph graph,
                                   org.graalvm.compiler.nodes.java.AbstractCompareAndSwapNode node)

AbstractCompareAndSwapNode has

• The object to which the write is done, in node.object(),
• the value to be written, in node.getNewValue(),
• the location within the object for the write, in node.location(),
• whether a precise or imprecise barrier is needed, in node.getBarrierType(),
.

rewriteWithBarriers

protected void rewriteWithBarriers(org.graalvm.compiler.nodes.StructuredGraph graph,
                                   org.graalvm.compiler.nodes.java.LoweredAtomicReadAndWriteNode node)

LoweredAtomicReadAndWriteNode has

• The object to which the write is done, in node.object(),
• the value to be written, in node.getNewValue(),
• the location within the object for the write, in node.location(),
• whether a precise or imprecise barrier is needed, in node.getBarrierType(),
.

addPostWriteBarrier

protected void addPostWriteBarrier(org.graalvm.compiler.nodes.StructuredGraph graph,
                                   org.graalvm.compiler.nodes.memory.FixedAccessNode node,
                                   org.graalvm.compiler.nodes.memory.address.AddressNode address)