org.jikesrvm.compilers.opt.ssa

Class LoadElimination.GVNPreparation

java.lang.Object

org.jikesrvm.compilers.opt.driver.CompilerPhase

org.jikesrvm.compilers.opt.ssa.LoadElimination.GVNPreparation

Enclosing class:

LoadElimination

public static class LoadElimination.GVNPreparation
extends CompilerPhase

This class sets up the IR state prior to entering SSA for GVN.

Field Summary

Fields

Modifier and Type	Field and Description
private static Constructor<CompilerPhase>	constructor Constructor for this compiler phase
private int	round

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

container

Constructor Summary

Constructors

Constructor and Description
GVNPreparation(int round)

Method Summary

Modifier and Type	Method and Description
Constructor<CompilerPhase>	getClassConstructor() Get a constructor object for this compiler phase
String	getName()
void	perform(IR ir) This is the method that actually does the work of the phase.
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, getCompilerPhaseConstructor, getCompilerPhaseConstructor, newExecution, performPhase, printingEnabled, reportAdditionalStats, setContainer, verify

Methods inherited from class java.lang.Object

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

Field Detail

round

private final int round

constructor

private static final Constructor<CompilerPhase> constructor

Constructor for this compiler phase

Constructor Detail

GVNPreparation

public GVNPreparation(int round)

Method Detail

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.

getClassConstructor

public Constructor<CompilerPhase> getClassConstructor()

Get a constructor object for this compiler phase

Overrides:

getClassConstructor in class CompilerPhase

Returns:

compiler phase constructor

perform

public final void perform(IR ir)

Description copied from class: CompilerPhase

This is the method that actually does the work of the phase.

Specified by:

perform in class CompilerPhase

Parameters:

ir - the IR on which to apply the phase