| /* |
| * 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<StoreIndexedNode> 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; |
| } |
| } |