org.graalvm.compiler.lir.alloc.lsra

Class OptimizingLinearScanWalker

java.lang.Object

org.graalvm.compiler.lir.alloc.lsra.IntervalWalker

org.graalvm.compiler.lir.alloc.lsra.OptimizingLinearScanWalker

public class OptimizingLinearScanWalker
extends IntervalWalker

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	OptimizingLinearScanWalker.Options

Field Summary

Fields

Modifier and Type	Field and Description
protected Register[]	availableRegs
protected int[]	blockPos
protected List<Interval>[]	spillIntervals
protected int[]	usePos

Fields inherited from class org.graalvm.compiler.lir.alloc.lsra.IntervalWalker

activeLists, allocator, currentBinding, currentPosition, inactiveLists, unhandledLists

Method Summary

Modifier and Type	Method and Description
protected boolean	activateCurrent(Interval interval) Processes the currentInterval interval in an attempt to allocate a physical register to it and thus allow it to be moved to a list of active intervals.
void	finishAllocation()
protected void	handleSpillSlot(Interval interval) This is called for every interval that is assigned to a stack slot.

Methods inherited from class org.graalvm.compiler.lir.alloc.lsra.IntervalWalker

removeFromList, walkTo

Methods inherited from class java.lang.Object

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

Field Detail

availableRegs

protected Register[] availableRegs

usePos

protected final int[] usePos

blockPos

protected final int[] blockPos

spillIntervals

protected List<Interval>[] spillIntervals

Method Detail

handleSpillSlot

protected void handleSpillSlot(Interval interval)

This is called for every interval that is assigned to a stack slot.

activateCurrent

protected boolean activateCurrent(Interval interval)

Description copied from class: IntervalWalker

Processes the currentInterval interval in an attempt to allocate a physical register to it and thus allow it to be moved to a list of active intervals.

Overrides:

activateCurrent in class IntervalWalker

Returns:

true if a register was allocated to the currentInterval interval

finishAllocation

public void finishAllocation()