CoalesceMoves (Jikes RVM API)

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org.jikesrvm.compilers.opt.regalloc
Class CoalesceMoves

java.lang.Object
  org.jikesrvm.compilers.opt.driver.CompilerPhase
      org.jikesrvm.compilers.opt.regalloc.CoalesceMoves

public class CoalesceMoves
extends CompilerPhase
extends CompilerPhase

Coalesce registers in move instructions where possible.

Field Summary
`(package private) static boolean`	`DEBUG` verbose debugging flag

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

Constructor Summary
`CoalesceMoves()`

Method Summary
`String`	`getName()` Return a string name for this phase.
`CompilerPhase`	`newExecution(IR ir)` Return this instance of this phase.
`void`	`perform(IR ir)` This is the method that actually does the work of the phase.
`boolean`	`shouldPerform(OptOptions options)` Should we perform this phase?

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`

Field Detail

DEBUG

static final boolean DEBUG

verbose debugging flag

See Also:: Constant Field Values

Constructor Detail

CoalesceMoves

public CoalesceMoves()

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)

Should we perform this phase?

Overrides:: shouldPerform in class CompilerPhase

Parameters:: options - the compiler options for the compilation
Returns:: true iff move instructions should be coalesced after leaving SSA

getName

public final String getName()

Return a string name for this phase.

Specified by:: getName in class CompilerPhase

Returns:: "Coalesce Moves"

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