--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/StoreIndexedNode.java 2016-12-09 00:55:52.270193644 -0800 @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package org.graalvm.compiler.nodes.java; + +import static org.graalvm.compiler.nodeinfo.InputType.State; +import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_8; +import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_8; + +import org.graalvm.compiler.core.common.type.StampFactory; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodes.FrameState; +import org.graalvm.compiler.nodes.StateSplit; +import org.graalvm.compiler.nodes.ValueNode; +import org.graalvm.compiler.nodes.spi.Lowerable; +import org.graalvm.compiler.nodes.spi.Virtualizable; +import org.graalvm.compiler.nodes.spi.VirtualizerTool; +import org.graalvm.compiler.nodes.type.StampTool; +import org.graalvm.compiler.nodes.virtual.VirtualArrayNode; +import org.graalvm.compiler.nodes.virtual.VirtualObjectNode; + +import jdk.vm.ci.meta.JavaKind; +import jdk.vm.ci.meta.ResolvedJavaType; + +/** + * The {@code StoreIndexedNode} represents a write to an array element. + */ +@NodeInfo(cycles = CYCLES_8, size = SIZE_8) +public final class StoreIndexedNode extends AccessIndexedNode implements StateSplit, Lowerable, Virtualizable { + + public static final NodeClass TYPE = NodeClass.create(StoreIndexedNode.class); + @Input ValueNode value; + @OptionalInput(State) FrameState stateAfter; + + @Override + public FrameState stateAfter() { + return stateAfter; + } + + @Override + public void setStateAfter(FrameState x) { + assert x == null || x.isAlive() : "frame state must be in a graph"; + updateUsages(stateAfter, x); + stateAfter = x; + } + + @Override + public boolean hasSideEffect() { + return true; + } + + public ValueNode value() { + return value; + } + + public StoreIndexedNode(ValueNode array, ValueNode index, JavaKind elementKind, ValueNode value) { + super(TYPE, StampFactory.forVoid(), array, index, elementKind); + this.value = value; + } + + @Override + public void virtualize(VirtualizerTool tool) { + ValueNode alias = tool.getAlias(array()); + if (alias instanceof VirtualObjectNode) { + ValueNode indexValue = tool.getAlias(index()); + int idx = indexValue.isConstant() ? indexValue.asJavaConstant().asInt() : -1; + VirtualArrayNode virtual = (VirtualArrayNode) alias; + if (idx >= 0 && idx < virtual.entryCount()) { + ResolvedJavaType componentType = virtual.type().getComponentType(); + if (componentType.isPrimitive() || StampTool.isPointerAlwaysNull(value) || componentType.getSuperclass() == null || + (StampTool.typeReferenceOrNull(value) != null && componentType.isAssignableFrom(StampTool.typeOrNull(value)))) { + tool.setVirtualEntry(virtual, idx, value(), false); + tool.delete(); + } + } + } + } + + public FrameState getState() { + return stateAfter; + } +}