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_3; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_3; 27 28 import org.graalvm.compiler.core.common.PermanentBailoutException; 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.meta.HotSpotConstantLoadAction; 35 import org.graalvm.compiler.hotspot.word.KlassPointer; 36 import org.graalvm.compiler.hotspot.word.MethodPointer; 37 import org.graalvm.compiler.nodeinfo.NodeInfo; 38 import org.graalvm.compiler.nodes.FixedWithNextNode; 39 import org.graalvm.compiler.nodes.ValueNode; 40 import org.graalvm.compiler.nodes.spi.LIRLowerable; 41 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 42 import org.graalvm.compiler.nodes.util.GraphUtil; 43 44 import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; 45 import jdk.vm.ci.hotspot.HotSpotObjectConstant; 46 import jdk.vm.ci.meta.Constant; 47 import jdk.vm.ci.meta.Value; 48 49 @NodeInfo(cycles = CYCLES_3, size = SIZE_3) 50 public class LoadConstantIndirectlyFixedNode extends FixedWithNextNode implements Canonicalizable, LIRLowerable { 51 52 public static final NodeClass<LoadConstantIndirectlyFixedNode> TYPE = NodeClass.create(LoadConstantIndirectlyFixedNode.class); 53 54 @OptionalInput protected ValueNode value; 55 protected Constant constant; 56 protected HotSpotConstantLoadAction action; 57 58 public LoadConstantIndirectlyFixedNode(ValueNode value) { 59 super(TYPE, value.stamp()); 60 this.value = value; 61 this.constant = null; 62 this.action = HotSpotConstantLoadAction.RESOLVE; 63 } 64 65 public LoadConstantIndirectlyFixedNode(ValueNode value, HotSpotConstantLoadAction action) { 66 super(TYPE, value.stamp()); 67 this.value = value; 68 this.constant = null; 69 this.action = action; 70 } 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 result; 84 if (constant instanceof HotSpotObjectConstant) { 85 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLoadObjectAddress(constant); 86 } else if (constant instanceof HotSpotMetaspaceConstant) { 87 result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLoadMetaspaceAddress(constant, action); 88 } else { 89 throw new PermanentBailoutException("Unsupported constant type: " + constant); 90 } 91 gen.setResult(this, result); 92 } 93 94 @NodeIntrinsic 95 public static native KlassPointer loadKlass(KlassPointer klassPointer, @ConstantNodeParameter HotSpotConstantLoadAction action); 96 97 @NodeIntrinsic 98 public static native KlassPointer loadKlass(KlassPointer klassPointer); 99 100 @NodeIntrinsic 101 public static native MethodPointer loadMethod(MethodPointer klassPointer); 102 103 @NodeIntrinsic 104 public static native Object loadObject(Object object); 105 106 }