1 /* 2 * Copyright (c) 2011, 2017, 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.nodes.extended; 26 27 import static org.graalvm.compiler.nodeinfo.InputType.State; 28 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2; 29 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; 30 31 import org.graalvm.compiler.core.common.type.StampFactory; 32 import org.graalvm.compiler.graph.NodeClass; 33 import org.graalvm.compiler.nodeinfo.NodeInfo; 34 import org.graalvm.compiler.nodes.FrameState; 35 import org.graalvm.compiler.nodes.StateSplit; 36 import org.graalvm.compiler.nodes.ValueNode; 37 import org.graalvm.compiler.nodes.java.StoreFieldNode; 38 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 39 import org.graalvm.compiler.nodes.spi.Lowerable; 40 import org.graalvm.compiler.nodes.spi.LoweringTool; 41 import org.graalvm.compiler.nodes.spi.Virtualizable; 42 import org.graalvm.compiler.nodes.spi.VirtualizerTool; 43 import org.graalvm.compiler.nodes.virtual.VirtualObjectNode; 44 import jdk.internal.vm.compiler.word.LocationIdentity; 45 46 import jdk.vm.ci.meta.Assumptions; 47 import jdk.vm.ci.meta.JavaKind; 48 import jdk.vm.ci.meta.ResolvedJavaField; 49 50 /** 51 * Store of a value at a location specified as an offset relative to an object. No null check is 52 * performed before the store. 53 */ 54 @NodeInfo(cycles = CYCLES_2, size = SIZE_1) 55 public final class RawStoreNode extends UnsafeAccessNode implements StateSplit, Lowerable, Virtualizable, MemoryCheckpoint.Single { 56 57 public static final NodeClass<RawStoreNode> TYPE = NodeClass.create(RawStoreNode.class); 58 @Input ValueNode value; 59 @OptionalInput(State) FrameState stateAfter; 60 private final boolean needsBarrier; 61 62 public RawStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity) { 63 this(object, offset, value, accessKind, locationIdentity, true); 64 } 65 66 public RawStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity, boolean needsBarrier) { 67 this(object, offset, value, accessKind, locationIdentity, needsBarrier, null, false); 68 } 69 70 public RawStoreNode(ValueNode object, ValueNode offset, ValueNode value, JavaKind accessKind, LocationIdentity locationIdentity, boolean needsBarrier, FrameState stateAfter, 71 boolean forceAnyLocation) { 72 super(TYPE, StampFactory.forVoid(), object, offset, accessKind, locationIdentity, forceAnyLocation); 73 this.value = value; 74 this.needsBarrier = needsBarrier; 75 this.stateAfter = stateAfter; 76 assert accessKind != JavaKind.Void && accessKind != JavaKind.Illegal; 77 } 78 79 @NodeIntrinsic 80 public static native Object storeObject(Object object, long offset, Object value, @ConstantNodeParameter JavaKind kind, @ConstantNodeParameter LocationIdentity locationIdentity, 81 @ConstantNodeParameter boolean needsBarrier); 82 83 @NodeIntrinsic 84 public static native Object storeChar(Object object, long offset, char value, @ConstantNodeParameter JavaKind kind, @ConstantNodeParameter LocationIdentity locationIdentity); 85 86 public boolean needsBarrier() { 87 return needsBarrier; 88 } 89 90 @Override 91 public FrameState stateAfter() { 92 return stateAfter; 93 } 94 95 @Override 96 public void setStateAfter(FrameState x) { 97 assert x == null || x.isAlive() : "frame state must be in a graph"; 98 updateUsages(stateAfter, x); 99 stateAfter = x; 100 } 101 102 @Override 103 public boolean hasSideEffect() { 104 return true; 105 } 106 107 public ValueNode value() { 108 return value; 109 } 110 111 @Override 112 public void lower(LoweringTool tool) { 113 tool.getLowerer().lower(this, tool); 114 } 115 116 @Override 117 public void virtualize(VirtualizerTool tool) { 118 ValueNode alias = tool.getAlias(object()); 119 if (alias instanceof VirtualObjectNode) { 120 VirtualObjectNode virtual = (VirtualObjectNode) alias; 121 ValueNode indexValue = tool.getAlias(offset()); 122 if (indexValue.isConstant()) { 123 long off = indexValue.asJavaConstant().asLong(); 124 int entryIndex = virtual.entryIndexForOffset(tool.getMetaAccess(), off, accessKind()); 125 if (entryIndex != -1 && tool.setVirtualEntry(virtual, entryIndex, value(), accessKind(), off)) { 126 tool.delete(); 127 } 128 } 129 } 130 } 131 132 @Override 133 protected ValueNode cloneAsFieldAccess(Assumptions assumptions, ResolvedJavaField field, boolean volatileAccess) { 134 return new StoreFieldNode(object(), field, value(), stateAfter(), volatileAccess); 135 } 136 137 @Override 138 protected ValueNode cloneAsArrayAccess(ValueNode location, LocationIdentity identity) { 139 return new RawStoreNode(object(), location, value, accessKind(), identity, needsBarrier, stateAfter(), isAnyLocationForced()); 140 } 141 142 public FrameState getState() { 143 return stateAfter; 144 } 145 }