GenericStackManager.ScratchRegister (Jikes RVM API)

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org.jikesrvm.compilers.opt.regalloc
Class GenericStackManager.ScratchRegister

java.lang.Object
  org.jikesrvm.compilers.opt.regalloc.GenericStackManager.ScratchRegister

Enclosing class:: GenericStackManager

protected static final class GenericStackManager.ScratchRegister
extends Object
extends Object

Class to represent a physical register currently allocated as a scratch register.

Field Summary
`Register`	`currentContents` The current contents of scratch
`private boolean`	`dirty` Is this physical register currently dirty?
`Register`	`scratch` The physical register used as scratch.
`private boolean`	`spilledIt` Did we spill a value in order to free up this scratch register?

Constructor Summary
`GenericStackManager.ScratchRegister(Register scratch, Register currentContents)`

Method Summary
`boolean`	`hadToSpill()`
`boolean`	`isDirty()`
`void`	`setDirty(boolean b)`
`void`	`setHadToSpill(boolean b)`
`String`	`toString()`

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

Field Detail

scratch

public final Register scratch

The physical register used as scratch.

currentContents

public Register currentContents

The current contents of scratch

dirty

private boolean dirty

Is this physical register currently dirty? (Must be written back to memory?)

spilledIt

private boolean spilledIt

Did we spill a value in order to free up this scratch register?

Constructor Detail

GenericStackManager.ScratchRegister

public GenericStackManager.ScratchRegister(Register scratch,
                                           Register currentContents)

Method Detail

isDirty

public boolean isDirty()

setDirty

public void setDirty(boolean b)

hadToSpill

public boolean hadToSpill()

setHadToSpill

public void setHadToSpill(boolean b)

toString

public String toString()

Overrides:: toString in class Object