1 /* 2 * Copyright (c) 2009, 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.nodes; 24 25 import org.graalvm.compiler.debug.Debug; 26 import org.graalvm.compiler.graph.NodeClass; 27 import org.graalvm.compiler.lir.gen.LIRGeneratorTool; 28 import org.graalvm.compiler.nodeinfo.NodeInfo; 29 import org.graalvm.compiler.nodes.spi.LIRLowerable; 30 import org.graalvm.compiler.nodes.spi.Lowerable; 31 import org.graalvm.compiler.nodes.spi.LoweringTool; 32 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 33 34 import jdk.vm.ci.meta.DeoptimizationAction; 35 import jdk.vm.ci.meta.DeoptimizationReason; 36 import jdk.vm.ci.meta.JavaConstant; 37 import jdk.vm.ci.meta.JavaKind; 38 import jdk.vm.ci.meta.MetaAccessProvider; 39 import jdk.vm.ci.meta.Value; 40 41 @NodeInfo(shortName = "Deopt", nameTemplate = "Deopt {p#reason/s}") 42 public final class DeoptimizeNode extends AbstractDeoptimizeNode implements Lowerable, LIRLowerable { 43 public static final int DEFAULT_DEBUG_ID = 0; 44 45 public static final NodeClass<DeoptimizeNode> TYPE = NodeClass.create(DeoptimizeNode.class); 46 protected final DeoptimizationAction action; 47 protected final DeoptimizationReason reason; 48 protected final int debugId; 49 protected final JavaConstant speculation; 50 51 public DeoptimizeNode(DeoptimizationAction action, DeoptimizationReason reason) { 52 this(action, reason, DEFAULT_DEBUG_ID, JavaConstant.NULL_POINTER, null); 53 } 54 55 public DeoptimizeNode(DeoptimizationAction action, DeoptimizationReason reason, JavaConstant speculation) { 56 this(action, reason, DEFAULT_DEBUG_ID, speculation, null); 57 } 58 59 public DeoptimizeNode(DeoptimizationAction action, DeoptimizationReason reason, int debugId, JavaConstant speculation, FrameState stateBefore) { 60 super(TYPE, stateBefore); 61 assert action != null; 62 assert reason != null; 63 assert speculation.getJavaKind() == JavaKind.Object; 64 this.action = action; 65 this.reason = reason; 66 this.debugId = debugId; 67 this.speculation = speculation; 68 } 69 70 public DeoptimizationAction action() { 71 return action; 72 } 73 74 public DeoptimizationReason reason() { 75 return reason; 76 } 77 78 @Override 79 public void lower(LoweringTool tool) { 80 tool.getLowerer().lower(this, tool); 81 } 82 83 @SuppressWarnings("deprecation") 84 public int getDebugId() { 85 int deoptDebugId = debugId; 86 if (deoptDebugId == DEFAULT_DEBUG_ID && (Debug.isDumpEnabledForMethod() || Debug.isLogEnabledForMethod())) { 87 deoptDebugId = this.getId(); 88 } 89 return deoptDebugId; 90 } 91 92 @Override 93 public void generate(NodeLIRBuilderTool gen) { 94 LIRGeneratorTool tool = gen.getLIRGeneratorTool(); 95 Value actionAndReason = tool.emitJavaConstant(tool.getMetaAccess().encodeDeoptActionAndReason(action, reason, getDebugId())); 96 Value speculationValue = tool.emitJavaConstant(speculation); 97 gen.getLIRGeneratorTool().emitDeoptimize(actionAndReason, speculationValue, gen.state(this)); 98 } 99 100 @Override 101 public ValueNode getActionAndReason(MetaAccessProvider metaAccess) { 102 return ConstantNode.forConstant(metaAccess.encodeDeoptActionAndReason(action, reason, getDebugId()), metaAccess, graph()); 103 } 104 105 @Override 106 public ValueNode getSpeculation(MetaAccessProvider metaAccess) { 107 return ConstantNode.forConstant(speculation, metaAccess, graph()); 108 } 109 110 public JavaConstant getSpeculation() { 111 return speculation; 112 } 113 114 @NodeIntrinsic 115 public static native void deopt(@ConstantNodeParameter DeoptimizationAction action, @ConstantNodeParameter DeoptimizationReason reason); 116 }