com.oracle.graal.lir

Interface StandardOp.SaveRegistersOp

All Known Implementing Classes:

AMD64SaveRegistersOp, AMD64ZapRegistersOp, SPARCSaveRegistersOp

Enclosing class:

StandardOp

public static interface StandardOp.SaveRegistersOp

An operation that saves registers to the stack. The set of saved registers can be pruned and a mapping from registers to the frame slots in which they are saved can be retrieved.

Method Summary

Modifier and Type	Method and Description
RegisterSaveLayout	getMap(FrameMap frameMap) Gets a map from the saved registers saved by this operation to the frame slots in which they are saved.
int	remove(Set<Register> doNotSave) Prunes doNotSave from the registers saved by this operation.
boolean	supportsRemove() Determines if the remove(Set) operation is supported for this object.

Method Detail

supportsRemove

boolean supportsRemove()

Determines if the remove(Set) operation is supported for this object.

remove

int remove(Set<Register> doNotSave)

Prunes doNotSave from the registers saved by this operation.

Parameters:

doNotSave - registers that should not be saved by this operation

Returns:

the number of registers pruned

Throws:

UnsupportedOperationException - if removal is not supported

getMap

RegisterSaveLayout getMap(FrameMap frameMap)

Gets a map from the saved registers saved by this operation to the frame slots in which they are saved.

Parameters:

frameMap - used to convert a virtual slot to a frame slot index