1 /* 2 * Copyright (c) 2016, 2018, 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.hotspot.nodes.aot; 26 27 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 28 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_16; 29 30 import org.graalvm.compiler.graph.Node; 31 import org.graalvm.compiler.graph.NodeClass; 32 import org.graalvm.compiler.graph.spi.Canonicalizable; 33 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 34 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 35 import org.graalvm.compiler.hotspot.word.KlassPointer; 36 import org.graalvm.compiler.lir.LIRFrameState; 37 import org.graalvm.compiler.nodeinfo.InputType; 38 import org.graalvm.compiler.nodeinfo.NodeInfo; 39 import org.graalvm.compiler.nodes.DeoptimizingNode; 40 import org.graalvm.compiler.nodes.FrameState; 41 import org.graalvm.compiler.nodes.NodeView; 42 import org.graalvm.compiler.nodes.ValueNode; 43 import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; 44 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 45 import org.graalvm.compiler.nodes.spi.LIRLowerable; 46 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 47 import org.graalvm.compiler.nodes.util.GraphUtil; 48 import jdk.internal.vm.compiler.word.LocationIdentity; 49 50 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 51 import jdk.vm.ci.meta.Constant; 52 import jdk.vm.ci.meta.Value; 53 54 /** 55 * A call to the VM via a regular stub. 56 */ 57 @NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_UNKNOWN, size = SIZE_16) 58 public class InitializeKlassStubCall extends AbstractMemoryCheckpoint implements LIRLowerable, Canonicalizable, DeoptimizingNode.DeoptBefore, MemoryCheckpoint.Single { 59 public static final NodeClass<InitializeKlassStubCall> TYPE = NodeClass.create(InitializeKlassStubCall.class); 60 61 @OptionalInput protected ValueNode value; 62 @Input protected ValueNode string; 63 @OptionalInput(InputType.State) protected FrameState stateBefore; 64 protected Constant constant; 65 66 protected InitializeKlassStubCall(ValueNode value, ValueNode string) { 67 super(TYPE, value.stamp(NodeView.DEFAULT)); 68 this.value = value; 69 this.string = string; 70 } 71 72 @NodeIntrinsic 73 public static native KlassPointer initializeKlass(KlassPointer value, Object string); 74 75 @Override 76 public Node canonical(CanonicalizerTool tool) { 77 if (value != null) { 78 constant = GraphUtil.foldIfConstantAndRemove(this, value); 79 } 80 return this; 81 } 82 83 @Override 84 public void generate(NodeLIRBuilderTool gen) { 85 assert constant != null : "Expected the value to fold: " + value; 86 Value stringValue = gen.operand(string); 87 LIRFrameState fs = gen.state(this); 88 assert fs != null : "Frame state should be set"; 89 assert constant instanceof HotSpotMetaspaceConstant; 90 Value result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitKlassInitializationAndRetrieval(constant, stringValue, fs); 91 gen.setResult(this, result); 92 } 93 94 @Override 95 public boolean canDeoptimize() { 96 return true; 97 } 98 99 @Override 100 public LocationIdentity getLocationIdentity() { 101 return LocationIdentity.any(); 102 } 103 104 @Override 105 public FrameState stateBefore() { 106 return stateBefore; 107 } 108 109 @Override 110 public void setStateBefore(FrameState f) { 111 updateUsages(stateBefore, f); 112 stateBefore = f; 113 } 114 }