org.jikesrvm.compilers.opt.ssa

Class SSATuneUp.FoldingDriver

java.lang.Object

org.jikesrvm.compilers.opt.driver.CompilerPhase

org.jikesrvm.compilers.opt.ssa.SSATuneUp.FoldingDriver

Enclosing class:

SSATuneUp

private static class SSATuneUp.FoldingDriver
extends CompilerPhase

This class drives expression folding.

Field Summary

Fields inherited from class org.jikesrvm.compilers.opt.driver.CompilerPhase

container

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FoldingDriver()

Method Summary

Modifier and Type	Method and Description
String	getName()
CompilerPhase	newExecution(IR ir) Return this instance of this phase.
void	perform(IR ir) Execute expression folding.
boolean	shouldPerform(OptOptions options) This method determines if the phase should be run, based on the Options object it is passed.

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

dumpIR, dumpIR, getClassConstructor, getCompilerPhaseConstructor, getCompilerPhaseConstructor, performPhase, printingEnabled, reportAdditionalStats, setContainer, verify

Methods inherited from class java.lang.Object

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

Constructor Detail

FoldingDriver

private FoldingDriver()

Method Detail

newExecution

public CompilerPhase newExecution(IR ir)

Return this instance of this phase. This phase contains no per-compilation instance fields.

Overrides:

newExecution in class CompilerPhase

Parameters:

ir - not used

Returns:

this

shouldPerform

public final boolean shouldPerform(OptOptions options)

Description copied from class: CompilerPhase

This method determines if the phase should be run, based on the Options object it is passed. By default, phases are always performed. Subclasses should override this method if they only want to be performed conditionally.

Overrides:

shouldPerform in class CompilerPhase

Parameters:

options - the compiler options for the compilation

Returns:

true if the phase should be performed

getName

public final String getName()

Specified by:

getName in class CompilerPhase

Returns:

a String which is the name of the phase.

perform

public final void perform(IR ir)

Execute expression folding.

Specified by:

perform in class CompilerPhase

Parameters:

ir - the IR on which to apply the phase