1 /* 2 * Copyright (c) 2012, 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 24 25 package org.graalvm.compiler.nodes; 26 27 import org.graalvm.compiler.core.common.type.Stamp; 28 import org.graalvm.compiler.graph.NodeClass; 29 import org.graalvm.compiler.nodeinfo.InputType; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 32 /** 33 * Provides an implementation of {@link StateSplit}. 34 */ 35 @NodeInfo 36 public abstract class AbstractStateSplit extends FixedWithNextNode implements StateSplit { 37 38 public static final NodeClass<AbstractStateSplit> TYPE = NodeClass.create(AbstractStateSplit.class); 39 @OptionalInput(InputType.State) protected FrameState stateAfter; 40 41 @Override stateAfter()42 public FrameState stateAfter() { 43 return stateAfter; 44 } 45 46 @Override setStateAfter(FrameState x)47 public void setStateAfter(FrameState x) { 48 assert x == null || x.isAlive() : "frame state must be in a graph"; 49 updateUsages(stateAfter, x); 50 stateAfter = x; 51 } 52 53 @Override hasSideEffect()54 public boolean hasSideEffect() { 55 return true; 56 } 57 AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp)58 protected AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp) { 59 this(c, stamp, null); 60 } 61 AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp, FrameState stateAfter)62 protected AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp, FrameState stateAfter) { 63 super(c, stamp); 64 this.stateAfter = stateAfter; 65 } 66 } 67