Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/LoweredAtomicReadAndWriteNode.java @ 16919:0fe4732e5181
made use of generated Node classes predicated on value of graal.useGeneratedNodes system property (default is false)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 25 Aug 2014 13:45:12 +0200 |
parents | f90dcdbbb75e |
children | 845e881ce054 |
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/* * Copyright (c) 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 sun.misc.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; /** * Represents the lowered version of an atomic read-and-write operation like * {@link Unsafe#getAndSetInt(Object, long, int)} . */ @NodeInfo(allowedUsageTypes = {InputType.Memory}) public class LoweredAtomicReadAndWriteNode extends FixedAccessNode implements StateSplit, LIRLowerable, MemoryCheckpoint.Single { @Input ValueNode newValue; @OptionalInput(InputType.State) FrameState stateAfter; public static LoweredAtomicReadAndWriteNode create(ValueNode object, LocationNode location, ValueNode newValue, BarrierType barrierType) { return USE_GENERATED_NODES ? new LoweredAtomicReadAndWriteNodeGen(object, location, newValue, barrierType) : new LoweredAtomicReadAndWriteNode(object, location, newValue, barrierType); } LoweredAtomicReadAndWriteNode(ValueNode object, LocationNode location, ValueNode newValue, BarrierType barrierType) { super(object, location, newValue.stamp().unrestricted(), barrierType); this.newValue = newValue; } 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 LocationIdentity getLocationIdentity() { return location().getLocationIdentity(); } public void generate(NodeLIRBuilderTool gen) { Value address = location().generateAddress(gen, gen.getLIRGeneratorTool(), gen.operand(object())); Value result = gen.getLIRGeneratorTool().emitAtomicReadAndWrite(address, gen.operand(getNewValue())); gen.setResult(this, result); } public boolean canNullCheck() { return false; } public final ValueNode getNewValue() { return newValue; } }