org.graalvm.compiler.lir.alloc.lsra

Class MoveResolver

java.lang.Object

org.graalvm.compiler.lir.alloc.lsra.MoveResolver

Direct Known Subclasses:

SSAMoveResolver

public class MoveResolver
extends Object

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MoveResolver(LinearScan allocator)

Method Summary

Modifier and Type	Method and Description
void	addMapping(Constant fromOpr, Interval toInterval)
void	addMapping(Interval fromInterval, Interval toInterval)
protected boolean	areMultipleReadsAllowed()
protected void	breakCycle(int spillCandidate)
protected boolean	checkEmpty()
protected void	checkMultipleReads()
protected LIRInstruction	createMove(AllocatableValue fromOpr, AllocatableValue toOpr, AllocatableValue fromLocation, AllocatableValue toLocation)
protected LinearScan	getAllocator()
protected Interval	getMappingFrom(int i)
protected boolean	isMoveToSelf(Value from, Value to)
protected int	mappingFromSize()
protected boolean	mightBeBlocked(Value location)
protected void	setValueBlocked(Value location, int direction)
protected void	spillInterval(int spillCandidate, Interval fromInterval, AllocatableValue spillSlot)
protected int	valueBlocked(Value location)
protected void	verifyStackSlotMapping()

Methods inherited from class java.lang.Object

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

Constructor Detail

MoveResolver

protected MoveResolver(LinearScan allocator)

Method Detail

setValueBlocked

protected void setValueBlocked(Value location,
                               int direction)

getMappingFrom

protected Interval getMappingFrom(int i)

mappingFromSize

protected int mappingFromSize()

valueBlocked

protected int valueBlocked(Value location)

areMultipleReadsAllowed

protected boolean areMultipleReadsAllowed()

getAllocator

protected LinearScan getAllocator()

checkEmpty

protected boolean checkEmpty()

checkMultipleReads

protected void checkMultipleReads()

verifyStackSlotMapping

protected void verifyStackSlotMapping()

isMoveToSelf

protected boolean isMoveToSelf(Value from,
                               Value to)

mightBeBlocked

protected boolean mightBeBlocked(Value location)

createMove

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

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)

spillInterval

protected void spillInterval(int spillCandidate,
                             Interval fromInterval,
                             AllocatableValue spillSlot)

addMapping

public void addMapping(Interval fromInterval,
                       Interval toInterval)

addMapping

public void addMapping(Constant fromOpr,
                       Interval toInterval)