org.graalvm.compiler.truffle.compiler.phases

Class InstrumentBranchesPhase

java.lang.Object

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

org.graalvm.compiler.truffle.compiler.phases.InstrumentPhase

org.graalvm.compiler.truffle.compiler.phases.InstrumentBranchesPhase

All Implemented Interfaces:

PhaseSizeContract

public class InstrumentBranchesPhase
extends InstrumentPhase

Instruments IfNodes in the graph, by adding execution counters to the true and the false branch of each IfNode. If this phase is enabled, the runtime outputs a summary of all the compiled IfNodes and the execution count of their branches, when the program exits. The phase is enabled with the following flag:

 -Dgraal.TruffleInstrumentBranches
 

The flag:

 -Dgraal.TruffleInstrumentBranchesPerInlineSite
 

decides whether to treat different inlining sites separately when tracking the execution counts of an IfNode.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	InstrumentBranchesPhase.BranchState
class	InstrumentBranchesPhase.IfPoint

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

InstrumentPhase.Instrumentation, InstrumentPhase.InstrumentationConfiguration, InstrumentPhase.Point

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

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

Field Summary

Fields inherited from class org.graalvm.compiler.truffle.compiler.phases.InstrumentPhase

snippetReflection

Constructor Summary

Constructors

Constructor and Description
InstrumentBranchesPhase(SnippetReflectionProvider snippetReflection, InstrumentPhase.Instrumentation instrumentation, boolean instrumentPerInlineSite)

Method Summary

Modifier and Type	Method and Description
protected InstrumentPhase.Point	createPoint(int id, int startIndex, Node n)
protected int	instrumentationPointSlotCount()
protected void	instrumentGraph(StructuredGraph graph, TruffleTierContext context, JavaConstant tableConstant)
protected boolean	instrumentPerInlineSite()

Methods inherited from class org.graalvm.compiler.truffle.compiler.phases.InstrumentPhase

codeSizeIncrease, getInstrumentation, getOrCreatePoint, insertCounter, instrumentationFilter, methodFilter, run

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

apply, apply, applyScope, 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

InstrumentBranchesPhase

public InstrumentBranchesPhase(SnippetReflectionProvider snippetReflection,
                               InstrumentPhase.Instrumentation instrumentation,
                               boolean instrumentPerInlineSite)

Method Detail

instrumentGraph

protected void instrumentGraph(StructuredGraph graph,
                               TruffleTierContext context,
                               JavaConstant tableConstant)

Specified by:

instrumentGraph in class InstrumentPhase

instrumentationPointSlotCount

protected int instrumentationPointSlotCount()

Specified by:

instrumentationPointSlotCount in class InstrumentPhase

instrumentPerInlineSite

protected boolean instrumentPerInlineSite()

Specified by:

instrumentPerInlineSite in class InstrumentPhase

createPoint

protected InstrumentPhase.Point createPoint(int id,
                                            int startIndex,
                                            Node n)

Specified by:

createPoint in class InstrumentPhase