1 /* 2 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.lir.phases; 24 25 import java.util.ArrayList; 26 import java.util.Collections; 27 import java.util.List; 28 import java.util.ListIterator; 29 30 import org.graalvm.compiler.lir.gen.LIRGenerationResult; 31 32 import jdk.vm.ci.code.TargetDescription; 33 34 public class LIRPhaseSuite<C> extends LIRPhase<C> { 35 private List<LIRPhase<C>> phases; 36 private boolean immutable; 37 38 public LIRPhaseSuite() { 39 phases = new ArrayList<>(); 40 } 41 42 /** 43 * Add a new phase at the beginning of this suite. 44 */ 45 public final void prependPhase(LIRPhase<C> phase) { 46 phases.add(0, phase); 47 } 48 49 /** 50 * Add a new phase at the end of this suite. 51 */ 52 public final void appendPhase(LIRPhase<C> phase) { 53 phases.add(phase); 54 } 55 56 public final ListIterator<LIRPhase<C>> findPhase(Class<? extends LIRPhase<C>> phaseClass) { 57 ListIterator<LIRPhase<C>> it = phases.listIterator(); 58 if (findNextPhase(it, phaseClass)) { 59 return it; 60 } else { 61 return null; 62 } 63 } 64 65 public final <T extends LIRPhase<C>> T findPhaseInstance(Class<T> phaseClass) { 66 ListIterator<LIRPhase<C>> it = phases.listIterator(); 67 while (it.hasNext()) { 68 LIRPhase<C> phase = it.next(); 69 if (phaseClass.isInstance(phase)) { 70 return phaseClass.cast(phase); 71 } 72 } 73 return null; 74 } 75 76 public static <C> boolean findNextPhase(ListIterator<LIRPhase<C>> it, Class<? extends LIRPhase<C>> phaseClass) { 77 while (it.hasNext()) { 78 LIRPhase<C> phase = it.next(); 79 if (phaseClass.isInstance(phase)) { 80 return true; 81 } 82 } 83 return false; 84 } 85 86 @Override 87 protected final void run(TargetDescription target, LIRGenerationResult lirGenRes, C context) { 88 for (LIRPhase<C> phase : phases) { 89 phase.apply(target, lirGenRes, context); 90 } 91 } 92 93 public LIRPhaseSuite<C> copy() { 94 LIRPhaseSuite<C> suite = new LIRPhaseSuite<>(); 95 suite.phases.addAll(phases); 96 return suite; 97 } 98 99 public boolean isImmutable() { 100 return immutable; 101 } 102 103 public synchronized void setImmutable() { 104 if (!immutable) { 105 phases = Collections.unmodifiableList(phases); 106 immutable = true; 107 } 108 } 109 }