001/*
002 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003 *
004 *  This file is licensed to You under the Eclipse Public License (EPL);
005 *  You may not use this file except in compliance with the License. You
006 *  may obtain a copy of the License at
007 *
008 *      http://www.opensource.org/licenses/eclipse-1.0.php
009 *
010 *  See the COPYRIGHT.txt file distributed with this work for information
011 *  regarding copyright ownership.
012 */
013package org.jikesrvm.compilers.opt.bc2ir;
014
015import org.jikesrvm.compilers.opt.driver.CompilerPhase;
016import org.jikesrvm.compilers.opt.ir.HIRInfo;
017import org.jikesrvm.compilers.opt.ir.IR;
018
019/**
020 * Translate from bytecodes to HIR
021 */
022public final class ConvertBCtoHIR extends CompilerPhase {
023
024  @Override
025  public String getName() {
026    return "Generate HIR";
027  }
028
029  /**
030   * Generate HIR for ir.method into IR
031   *
032   * @param ir The IR to generate HIR into
033   */
034  @Override
035  public void perform(IR ir) {
036    // Generate the cfg into gc
037    GenerationContext gc = new GenerationContext(ir.method, ir.params, ir.compiledMethod, ir.options, ir.inlinePlan);
038    BC2IR.generateHIR(gc);
039    // Transfer HIR and misc state from gc to the ir object
040    ir.gc = gc;
041    ir.cfg = gc.getCfg();
042    ir.regpool = gc.getTemps();
043    if (gc.requiresStackFrame()) {
044      ir.stackManager.forceFrameAllocation();
045    }
046
047    ir.IRStage = IR.HIR;
048    ir.HIRInfo = new HIRInfo(ir);
049  }
050
051  // This phase contains no instance fields.
052  @Override
053  public CompilerPhase newExecution(IR ir) {
054    return this;
055  }
056}