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