/*
* 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.instrsched;
import org.jikesrvm.compilers.opt.OptOptions;
import org.jikesrvm.compilers.opt.driver.CompilerPhase;
/**
* Pre-pass Instruction Scheduling Phase
*
* This class is declared as "final" which implies that all its methods
* are "final" too.
*/
public final class PrePassScheduler extends CompilerPhase {
public boolean shouldPerform(OptOptions options) {
return options.L2M_SCHEDULE_PREPASS;
}
public String getName() {
return "InstrSched (pre-pass)";
}
public boolean printingEnabled(OptOptions options, boolean before) {
return !before && // old interface only printed afterwards
options.PRINT_SCHEDULE_PRE;
}
/**
* Perform instruction scheduling for a method.
* This is an MIR to MIR transformation.
*
* @param ir the IR in question
*/
public void perform(org.jikesrvm.compilers.opt.ir.IR ir) {
new Scheduler(Scheduler.PREPASS).perform(ir);
}
}