1 /* 2 * Copyright (c) 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.nodes.aot; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_20; 27 28 import org.graalvm.compiler.core.common.LocationIdentity; 29 import org.graalvm.compiler.graph.Node; 30 import org.graalvm.compiler.graph.NodeClass; 31 import org.graalvm.compiler.graph.spi.Canonicalizable; 32 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 33 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 34 import org.graalvm.compiler.hotspot.word.KlassPointer; 35 import org.graalvm.compiler.lir.LIRFrameState; 36 import org.graalvm.compiler.nodeinfo.InputType; 37 import org.graalvm.compiler.nodeinfo.NodeInfo; 38 import org.graalvm.compiler.nodes.DeoptimizingNode; 39 import org.graalvm.compiler.nodes.FrameState; 40 import org.graalvm.compiler.nodes.ValueNode; 41 import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; 42 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 43 import org.graalvm.compiler.nodes.spi.LIRLowerable; 44 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 45 import org.graalvm.compiler.nodes.util.GraphUtil; 46 47 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 48 import jdk.vm.ci.meta.Constant; 49 import jdk.vm.ci.meta.Value; 50 51 /** 52 * A call to the VM via a regular stub. 53 */ 54 @NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_UNKNOWN, size = SIZE_20) 55 public class InitializeKlassStubCall extends AbstractMemoryCheckpoint implements LIRLowerable, Canonicalizable, DeoptimizingNode.DeoptBefore, MemoryCheckpoint.Single { 56 public static final NodeClass<InitializeKlassStubCall> TYPE = NodeClass.create(InitializeKlassStubCall.class); 57 58 @OptionalInput protected ValueNode value; 59 @Input protected ValueNode string; 60 @OptionalInput(InputType.State) protected FrameState stateBefore; 61 protected Constant constant; 62 63 protected InitializeKlassStubCall(ValueNode value, ValueNode string) { 64 super(TYPE, value.stamp()); 65 this.value = value; 66 this.string = string; 67 } 68 69 @NodeIntrinsic 70 public static native KlassPointer initializeKlass(KlassPointer value, Object string); 71 72 @Override 73 public Node canonical(CanonicalizerTool tool) { 74 if (value != null) { 75 constant = GraphUtil.foldIfConstantAndRemove(this, value); 76 } 77 return this; 78 } 79 80 @Override 81 public void generate(NodeLIRBuilderTool gen) { 82 assert constant != null : "Expected the value to fold: " + value; 83 Value stringValue = gen.operand(string); 84 LIRFrameState fs = gen.state(this); 85 assert fs != null : "Frame state should be set"; 86 assert constant instanceof HotSpotMetaspaceConstant; 87 Value result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitKlassInitializationAndRetrieval(constant, stringValue, fs); 88 gen.setResult(this, result); 89 } 90 91 @Override 92 public boolean canDeoptimize() { 93 return true; 94 } 95 96 @Override 97 public LocationIdentity getLocationIdentity() { 98 return LocationIdentity.any(); 99 } 100 101 @Override 102 public FrameState stateBefore() { 103 return stateBefore; 104 } 105 106 @Override 107 public void setStateBefore(FrameState f) { 108 updateUsages(stateBefore, f); 109 stateBefore = f; 110 } 111 }