1 /* 2 * Copyright (c) 2014, 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 //JaCoCo Exclude 24 package org.graalvm.compiler.hotspot.replacements.arraycopy; 25 26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN; 28 29 import org.graalvm.compiler.core.common.type.StampFactory; 30 import org.graalvm.compiler.graph.NodeClass; 31 import org.graalvm.compiler.hotspot.HotSpotBackend; 32 import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider; 33 import org.graalvm.compiler.hotspot.nodes.GetObjectAddressNode; 34 import org.graalvm.compiler.nodeinfo.InputType; 35 import org.graalvm.compiler.nodeinfo.NodeInfo; 36 import org.graalvm.compiler.nodes.StructuredGraph; 37 import org.graalvm.compiler.nodes.ValueNode; 38 import org.graalvm.compiler.nodes.calc.IntegerConvertNode; 39 import org.graalvm.compiler.nodes.extended.ForeignCallNode; 40 import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; 41 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 42 import org.graalvm.compiler.nodes.spi.Lowerable; 43 import org.graalvm.compiler.nodes.spi.LoweringTool; 44 import org.graalvm.word.LocationIdentity; 45 46 import jdk.vm.ci.meta.JavaKind; 47 48 @NodeInfo(allowedUsageTypes = {InputType.Memory, InputType.Value}, cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN) 49 public final class GenericArrayCopyCallNode extends AbstractMemoryCheckpoint implements Lowerable, MemoryCheckpoint.Single { 50 51 public static final NodeClass<GenericArrayCopyCallNode> TYPE = NodeClass.create(GenericArrayCopyCallNode.class); 52 @Input ValueNode src; 53 @Input ValueNode srcPos; 54 @Input ValueNode dest; 55 @Input ValueNode destPos; 56 @Input ValueNode length; 57 58 protected final HotSpotGraalRuntimeProvider runtime; 59 60 protected GenericArrayCopyCallNode(@InjectedNodeParameter HotSpotGraalRuntimeProvider runtime, ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length) { 61 super(TYPE, StampFactory.forKind(JavaKind.Int)); 62 this.src = src; 63 this.srcPos = srcPos; 64 this.dest = dest; 65 this.destPos = destPos; 66 this.length = length; 67 this.runtime = runtime; 68 } 69 70 public ValueNode getSource() { 71 return src; 72 } 73 74 public ValueNode getSourcePosition() { 75 return srcPos; 76 } 77 78 public ValueNode getDestination() { 79 return dest; 80 } 81 82 public ValueNode getDestinationPosition() { 83 return destPos; 84 } 85 86 public ValueNode getLength() { 87 return length; 88 } 89 90 @Override 91 public void lower(LoweringTool tool) { 92 if (graph().getGuardsStage().areFrameStatesAtDeopts()) { 93 StructuredGraph graph = graph(); 94 ValueNode srcAddr = objectAddress(getSource()); 95 ValueNode destAddr = objectAddress(getDestination()); 96 ForeignCallNode call = graph.add(new ForeignCallNode(runtime.getHostBackend().getForeignCalls(), HotSpotBackend.GENERIC_ARRAYCOPY, srcAddr, srcPos, destAddr, destPos, length)); 97 call.setStateAfter(stateAfter()); 98 graph.replaceFixedWithFixed(this, call); 99 } 100 } 101 102 private ValueNode objectAddress(ValueNode obj) { 103 GetObjectAddressNode result = graph().add(new GetObjectAddressNode(obj)); 104 graph().addBeforeFixed(this, result); 105 return result; 106 } 107 108 private ValueNode wordValue(ValueNode value) { 109 if (value.stamp().getStackKind() != runtime.getTarget().wordJavaKind) { 110 return IntegerConvertNode.convert(value, StampFactory.forKind(runtime.getTarget().wordJavaKind), graph()); 111 } 112 return value; 113 } 114 115 @Override 116 public LocationIdentity getLocationIdentity() { 117 return LocationIdentity.any(); 118 } 119 120 @NodeIntrinsic 121 public static native int genericArraycopy(Object src, int srcPos, Object dest, int destPos, int length); 122 }