com.oracle.graal.lir.alloc.lsra.ssa

Class SSAMoveResolver

java.lang.Object

com.oracle.graal.lir.alloc.lsra.MoveResolver

com.oracle.graal.lir.alloc.lsra.ssa.SSAMoveResolver

public final class SSAMoveResolver
extends MoveResolver

Field Summary

Fields

Modifier and Type	Field and Description
private int	firstVirtualStackIndex
private static int	STACK_SLOT_IN_CALLER_FRAME_IDX
private int[]	stackBlocked

Constructor Summary

Constructors

Constructor and Description
SSAMoveResolver(LinearScan allocator)

Method Summary

Modifier and Type	Method and Description
protected boolean	areMultipleReadsAllowed()
protected void	breakCycle(int spillCandidate)
boolean	checkEmpty()
protected void	checkMultipleReads()
protected LIRInstruction	createMove(AllocatableValue fromOpr, AllocatableValue toOpr, AllocatableValue fromLocation, AllocatableValue toLocation)
private int	getStackArrayIndex(StackSlot stackSlot)
private int	getStackArrayIndex(StackSlotValue stackSlotValue)
private int	getStackArrayIndex(VirtualStackSlot virtualStackSlot)
protected boolean	mightBeBlocked(Value location)
protected void	setValueBlocked(Value location, int direction)
protected int	valueBlocked(Value location)
protected void	verifyStackSlotMapping()

Methods inherited from class com.oracle.graal.lir.alloc.lsra.MoveResolver

addMapping, addMapping, getAllocator, getMappingFrom, isMoveToSelf, mappingFromSize, spillInterval

Methods inherited from class java.lang.Object

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

Field Detail

STACK_SLOT_IN_CALLER_FRAME_IDX

private static final int STACK_SLOT_IN_CALLER_FRAME_IDX

See Also:

Constant Field Values

stackBlocked

private int[] stackBlocked

firstVirtualStackIndex

private final int firstVirtualStackIndex

Constructor Detail

SSAMoveResolver

public SSAMoveResolver(LinearScan allocator)

Method Detail

checkEmpty

public boolean checkEmpty()

Overrides:

checkEmpty in class MoveResolver

checkMultipleReads

protected void checkMultipleReads()

Overrides:

checkMultipleReads in class MoveResolver

verifyStackSlotMapping

protected void verifyStackSlotMapping()

Overrides:

verifyStackSlotMapping in class MoveResolver

areMultipleReadsAllowed

protected boolean areMultipleReadsAllowed()

Overrides:

areMultipleReadsAllowed in class MoveResolver

mightBeBlocked

protected boolean mightBeBlocked(Value location)

Overrides:

mightBeBlocked in class MoveResolver

getStackArrayIndex

private int getStackArrayIndex(StackSlotValue stackSlotValue)

getStackArrayIndex

private int getStackArrayIndex(StackSlot stackSlot)

getStackArrayIndex

private int getStackArrayIndex(VirtualStackSlot virtualStackSlot)

setValueBlocked

protected void setValueBlocked(Value location,
                               int direction)

Overrides:

setValueBlocked in class MoveResolver

valueBlocked

protected int valueBlocked(Value location)

Overrides:

valueBlocked in class MoveResolver

createMove

protected LIRInstruction createMove(AllocatableValue fromOpr,
                                    AllocatableValue toOpr,
                                    AllocatableValue fromLocation,
                                    AllocatableValue toLocation)

Overrides:

createMove in class MoveResolver

Parameters:

fromOpr - operand of the from interval

toOpr - operand of the to interval

fromLocation - location of the to interval

toLocation - location of the to interval

breakCycle

protected void breakCycle(int spillCandidate)

Overrides:

breakCycle in class MoveResolver