/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.compilers.opt.regalloc;
import org.jikesrvm.compilers.opt.ir.IR;
/**
* An object that returns an estimate of the relative cost of spilling a
* symbolic register.
* <p>
* This implementation returns a cost of zero for all registers.
*/
final class BrainDeadSpillCost extends SpillCostEstimator {
BrainDeadSpillCost(IR ir) {
calculate(ir);
}
/**
* {@inheritDoc}
* This brain-dead version does nothing.
*
* @param ir unused
*/
@Override
void calculate(IR ir) {
}
}