LinearScan.UpdateGCMaps1 (Jikes RVM API)

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org.jikesrvm.compilers.opt.regalloc
Class LinearScan.UpdateGCMaps1

java.lang.Object
  org.jikesrvm.compilers.opt.driver.CompilerPhase
      org.jikesrvm.compilers.opt.regalloc.LinearScan.UpdateGCMaps1

Enclosing class:: LinearScan

static final class LinearScan.UpdateGCMaps1
extends CompilerPhase
extends CompilerPhase

Update GC maps after register allocation but before inserting spill code.

Field Summary

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

Constructor Summary
`LinearScan.UpdateGCMaps1()`

Method Summary
`String`	`getName()`
`CompilerPhase`	`newExecution(IR ir)` Return this instance of this phase.
`void`	`perform(IR ir)` Iterate over the IR-based GC map collection and for each entry replace the symbolic reg with the real reg or spill it was allocated
`boolean`	`printingEnabled(OptOptions options, boolean before)` Returns true if the phase wants the IR dumped before and/or after it runs.
`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, reportAdditionalStats, setContainer, verify`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

LinearScan.UpdateGCMaps1

LinearScan.UpdateGCMaps1()

Method Detail

shouldPerform

public 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

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

getName

public String getName()

Specified by:: getName in class CompilerPhase

Returns:: a String which is the name of the phase.

printingEnabled

public boolean printingEnabled(OptOptions options,
                               boolean before)