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_4; 28 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; 29 30 import org.graalvm.compiler.core.common.PermanentBailoutException; 31 import org.graalvm.compiler.graph.Node; 32 import org.graalvm.compiler.graph.NodeClass; 33 import org.graalvm.compiler.graph.spi.Canonicalizable; 34 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 35 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 36 import org.graalvm.compiler.hotspot.meta.HotSpotConstantLoadAction; 37 import org.graalvm.compiler.hotspot.word.KlassPointer; 38 import org.graalvm.compiler.nodeinfo.NodeInfo; 39 import org.graalvm.compiler.nodes.NodeView; 40 import org.graalvm.compiler.nodes.ValueNode; 41 import org.graalvm.compiler.nodes.calc.FloatingNode; 42 import org.graalvm.compiler.nodes.spi.LIRLowerable; 43 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 44 import org.graalvm.compiler.nodes.util.GraphUtil; 45 46 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 47 import jdk.vm.ci.hotspot.HotSpotObjectConstant; 48 import jdk.vm.ci.meta.Constant; 49 import jdk.vm.ci.meta.Value; 50 51 @NodeInfo(cycles = CYCLES_4, size = SIZE_1) 52 public class LoadConstantIndirectlyNode extends FloatingNode implements Canonicalizable, LIRLowerable { 53 54 public static final NodeClass<LoadConstantIndirectlyNode> TYPE = NodeClass.create(LoadConstantIndirectlyNode.class); 55 56 @OptionalInput protected ValueNode value; 57 protected Constant constant; 58 protected HotSpotConstantLoadAction action; 59 60 public LoadConstantIndirectlyNode(ValueNode value) { 61 super(TYPE, value.stamp(NodeView.DEFAULT)); 62 this.value = value; 63 this.constant = null; 64 this.action = HotSpotConstantLoadAction.RESOLVE; 65 } 66 67 public LoadConstantIndirectlyNode(ValueNode value, HotSpotConstantLoadAction action) { 68 super(TYPE, value.stamp(NodeView.DEFAULT)); 69 this.value = value; 70 this.constant = null; 71 this.action = action; 72 } 73 74 @Override 75 public Node canonical(CanonicalizerTool tool) { 76 if (value != null) { 77 constant = GraphUtil.foldIfConstantAndRemove(this, value); 78 } 79 return this; 80 } 81 82 @Override 83 public void generate(NodeLIRBuilderTool gen) { 84 assert constant != null : "Expected the value to fold: " + value; 85 Value result; 86 if (constant instanceof HotSpotObjectConstant) { 87 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLoadObjectAddress(constant); 88 } else if (constant instanceof HotSpotMetaspaceConstant) { 89 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLoadMetaspaceAddress(constant, action); 90 } else { 91 throw new PermanentBailoutException("Unsupported constant type: " + constant); 92 } 93 gen.setResult(this, result); 94 } 95 96 @NodeIntrinsic 97 public static native KlassPointer loadKlass(KlassPointer klassPointer, @ConstantNodeParameter HotSpotConstantLoadAction action); 98 99 @NodeIntrinsic 100 public static native KlassPointer loadKlass(KlassPointer klassPointer); 101 102 @NodeIntrinsic 103 public static native Object loadObject(Object object); 104 105 }