org.jikesrvm.compilers.opt.regalloc

Class BrainDeadSpillCost

java.lang.Object

org.jikesrvm.compilers.opt.regalloc.SpillCostEstimator

org.jikesrvm.compilers.opt.regalloc.BrainDeadSpillCost

final class BrainDeadSpillCost
extends SpillCostEstimator

An object that returns an estimate of the relative cost of spilling a symbolic register.

This implementation returns a cost of zero for all registers.

Constructor Summary

Constructors

Constructor and Description
BrainDeadSpillCost(IR ir)

Method Summary

Modifier and Type	Method and Description
(package private) void	calculate(IR ir) Calculates the estimated cost for each register.

Methods inherited from class org.jikesrvm.compilers.opt.regalloc.SpillCostEstimator

getCost, update

Methods inherited from class java.lang.Object

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

Constructor Detail

BrainDeadSpillCost

BrainDeadSpillCost(IR ir)

Method Detail

calculate

void calculate(IR ir)

Calculates the estimated cost for each register. This brain-dead version does nothing.

Specified by:

calculate in class SpillCostEstimator

Parameters:

ir - unused