Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/StoreIndexedNode.java @ 19379:b720a1e02fa0
Add graph building time canonicalization for NormalizeCompareNode.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 15 Feb 2015 14:33:16 +0100 |
parents | 3fc907b46313 |
children | 7e2c87dae93e |
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/* * Copyright (c) 2009, 2014, 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 com.oracle.graal.nodes.java; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * The {@code StoreIndexedNode} represents a write to an array element. */ @NodeInfo public class StoreIndexedNode extends AccessIndexedNode implements StateSplit, Lowerable, Virtualizable { @Input ValueNode value; @OptionalInput(InputType.State) FrameState stateAfter; public FrameState stateAfter() { return stateAfter; } public void setStateAfter(FrameState x) { assert x == null || x.isAlive() : "frame state must be in a graph"; updateUsages(stateAfter, x); stateAfter = x; } public boolean hasSideEffect() { return true; } public ValueNode value() { return value; } public StoreIndexedNode(ValueNode array, ValueNode index, Kind elementKind, ValueNode value) { super(StampFactory.forVoid(), array, index, elementKind); this.value = value; } @Override public void virtualize(VirtualizerTool tool) { State arrayState = tool.getObjectState(array()); if (arrayState != null && arrayState.getState() == EscapeState.Virtual) { ValueNode indexValue = tool.getReplacedValue(index()); int idx = indexValue.isConstant() ? indexValue.asJavaConstant().asInt() : -1; if (idx >= 0 && idx < arrayState.getVirtualObject().entryCount()) { ResolvedJavaType componentType = arrayState.getVirtualObject().type().getComponentType(); if (componentType.isPrimitive() || StampTool.isPointerAlwaysNull(value) || componentType.getSuperclass() == null || (StampTool.typeOrNull(value) != null && componentType.isAssignableFrom(StampTool.typeOrNull(value)))) { tool.setVirtualEntry(arrayState, idx, value(), false); tool.delete(); } } } } public FrameState getState() { return stateAfter; } }