org.jikesrvm.compilers.opt.driver

Class OptimizationPlanAtomicElement

java.lang.Object

org.jikesrvm.compilers.opt.driver.OptimizationPlanElement

org.jikesrvm.compilers.opt.driver.OptimizationPlanAtomicElement

public final class OptimizationPlanAtomicElement
extends OptimizationPlanElement

An element in the opt compiler's optimization plan that consists of a single CompilerPhase.

NOTE: Instances of this class are held in OptimizationPlanner.masterPlan and thus represent global state. It is therefore incorrect for any per-compilation state to be stored in an instance field of one of these objects.

Field Summary

Fields

Modifier and Type	Field and Description
double	counter1 Counters to be used by myPhase to gather phase specific stats.
double	counter2 Counters to be used by myPhase to gather phase specific stats.
private CompilerPhase	myPhase The phase to be performed.
protected long	phaseNanos Accumulated nanoseconds spent in the element.

Constructor Summary

Constructors

Constructor and Description
OptimizationPlanAtomicElement(CompilerPhase p)

Method Summary

Modifier and Type	Method and Description
double	elapsedTime() Report the elapsed time spent in the PlanElement
String	getName()
void	initializeForMeasureCompilation() Update this phase to support the measuring of compilation
void	perform(IR ir) Do the work represented by this element in the optimization plan.
void	reportStats(int indent, int timeCol, double totalTime) Generate (to the sysWrite stream) a report of the time spent performing this element of the optimization plan.
boolean	shouldPerform(OptOptions options) Determine, possibly by consulting the passed options object, if this optimization plan element should be performed.

Methods inherited from class org.jikesrvm.compilers.opt.driver.OptimizationPlanElement

prettyPrintTime

Methods inherited from class java.lang.Object

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

Field Detail

myPhase

private final CompilerPhase myPhase

The phase to be performed.

phaseNanos

protected long phaseNanos

Accumulated nanoseconds spent in the element.

counter1

public double counter1

Counters to be used by myPhase to gather phase specific stats.

counter2

public double counter2

Counters to be used by myPhase to gather phase specific stats.

Constructor Detail

OptimizationPlanAtomicElement

public OptimizationPlanAtomicElement(CompilerPhase p)

Method Detail

initializeForMeasureCompilation

public void initializeForMeasureCompilation()

Update this phase to support the measuring of compilation

Specified by:

initializeForMeasureCompilation in class OptimizationPlanElement

shouldPerform

public boolean shouldPerform(OptOptions options)

Description copied from class: OptimizationPlanElement

Determine, possibly by consulting the passed options object, if this optimization plan element should be performed.

Specified by:

shouldPerform in class OptimizationPlanElement

Parameters:

options - The Options object for the current compilation.

Returns:

true if the plan element should be performed.

perform

public void perform(IR ir)

Description copied from class: OptimizationPlanElement

Do the work represented by this element in the optimization plan. The assumption is that the work will modify the IR in some way.

Specified by:

perform in class OptimizationPlanElement

Parameters:

ir - The IR object to work with.

getName

public String getName()

Specified by:

getName in class OptimizationPlanElement

Returns:

a String which is the name of the phase.

reportStats

public void reportStats(int indent,
                        int timeCol,
                        double totalTime)

Description copied from class: OptimizationPlanElement

Generate (to the sysWrite stream) a report of the time spent performing this element of the optimization plan.

Specified by:

reportStats in class OptimizationPlanElement

Parameters:

indent - Number of spaces to indent report.

timeCol - Column number of time portion of report.

totalTime - Total opt compilation time in seconds.

elapsedTime

public double elapsedTime()

Description copied from class: OptimizationPlanElement

Report the elapsed time spent in the PlanElement

Specified by:

elapsedTime in class OptimizationPlanElement

Returns:

time spend in the plan (in ms)