1 /* 2 * Copyright (c) 2016, 2019, 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.extended; 26 27 import static org.graalvm.compiler.nodeinfo.InputType.Guard; 28 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 import org.graalvm.compiler.nodes.ValueNode; 32 import jdk.internal.vm.compiler.word.LocationIdentity; 33 34 import jdk.vm.ci.meta.JavaKind; 35 36 @NodeInfo 37 public class GuardedUnsafeLoadNode extends RawLoadNode implements GuardedNode { 38 public static final NodeClass<GuardedUnsafeLoadNode> TYPE = NodeClass.create(GuardedUnsafeLoadNode.class); 39 40 @OptionalInput(Guard) protected GuardingNode guard; 41 42 public GuardedUnsafeLoadNode(ValueNode object, ValueNode offset, JavaKind accessKind, LocationIdentity locationIdentity, ValueNode guard) { 43 super(TYPE, object, offset, accessKind, locationIdentity); 44 this.guard = (GuardingNode) guard; 45 } 46 47 @Override 48 public GuardingNode getGuard() { 49 return guard; 50 } 51 52 @Override 53 public void setGuard(GuardingNode guard) { 54 updateUsagesInterface(this.guard, guard); 55 this.guard = guard; 56 } 57 58 @NodeIntrinsic 59 public static native Object guardedLoad(Object object, long offset, @ConstantNodeParameter JavaKind kind, @ConstantNodeParameter LocationIdentity locationIdentity, GuardingNode guard); 60 }