1 /* 2 * Copyright (c) 2015, 2016, 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.hotspot.replacements.arraycopy; 24 25 import jdk.vm.ci.code.BytecodeFrame; 26 import jdk.vm.ci.meta.JavaKind; 27 28 import static org.graalvm.compiler.core.common.LocationIdentity.any; 29 30 import org.graalvm.compiler.core.common.LocationIdentity; 31 import org.graalvm.compiler.graph.NodeClass; 32 import org.graalvm.compiler.hotspot.word.KlassPointer; 33 import org.graalvm.compiler.nodeinfo.InputType; 34 import org.graalvm.compiler.nodeinfo.NodeInfo; 35 import org.graalvm.compiler.nodes.NamedLocationIdentity; 36 import org.graalvm.compiler.nodes.ValueNode; 37 import org.graalvm.compiler.nodes.type.StampTool; 38 import org.graalvm.compiler.replacements.SnippetTemplate; 39 import org.graalvm.compiler.replacements.nodes.BasicArrayCopyNode; 40 41 @NodeInfo(allowedUsageTypes = InputType.Memory) 42 public final class ArrayCopySlowPathNode extends BasicArrayCopyNode { 43 44 public static final NodeClass<ArrayCopySlowPathNode> TYPE = NodeClass.create(ArrayCopySlowPathNode.class); 45 46 private final SnippetTemplate.SnippetInfo snippet; 47 48 /** 49 * Extra context for the slow path snippet. 50 */ 51 private final Object argument; 52 53 /** 54 * AOT compilation requires klass constants to be exposed after the first lowering to be handled 55 * automatically. Lowering for {@link ArrayCopySlowPathNode}, with snippet == 56 * {@link ArrayCopySnippets#arraycopyPredictedObjectWork}, requires a klass of Object[]. For 57 * other snippets {@link #predictedKlass} is a null constant. 58 */ 59 @Input protected ValueNode predictedKlass; 60 61 public ArrayCopySlowPathNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode predictedKlass, JavaKind elementKind, 62 SnippetTemplate.SnippetInfo snippet, Object argument) { 63 super(TYPE, src, srcPos, dest, destPos, length, elementKind, BytecodeFrame.INVALID_FRAMESTATE_BCI); 64 assert StampTool.isPointerNonNull(src) && StampTool.isPointerNonNull(dest) : "must have been null checked"; 65 this.snippet = snippet; 66 this.argument = argument; 67 this.predictedKlass = predictedKlass; 68 } 69 70 @NodeIntrinsic 71 public static native void arraycopy(Object nonNullSrc, int srcPos, Object nonNullDest, int destPos, int length, KlassPointer predictedKlass, 72 @ConstantNodeParameter JavaKind elementKind, @ConstantNodeParameter SnippetTemplate.SnippetInfo snippet, @ConstantNodeParameter Object argument); 73 74 public SnippetTemplate.SnippetInfo getSnippet() { 75 return snippet; 76 } 77 78 public Object getArgument() { 79 return argument; 80 } 81 82 @Override 83 public LocationIdentity getLocationIdentity() { 84 if (elementKind != null) { 85 return NamedLocationIdentity.getArrayLocation(elementKind); 86 } 87 return any(); 88 } 89 90 public void setBci(int bci) { 91 this.bci = bci; 92 } 93 94 public ValueNode getPredictedKlass() { 95 return predictedKlass; 96 } 97 }