Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/NegateNode.java @ 17418:393fe459eadc
Don't cache op field in arithmetic nodes.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 13 Oct 2014 15:36:11 +0200 |
parents | 845e881ce054 |
children | 83c3dd41ca64 |
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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.calc; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * The {@code NegateNode} node negates its operand. */ @NodeInfo public class NegateNode extends UnaryArithmeticNode implements NarrowableArithmeticNode { /** * Creates new NegateNode instance. * * @param value the instruction producing the value that is input to this instruction */ public static NegateNode create(ValueNode value) { return USE_GENERATED_NODES ? new NegateNodeGen(value) : new NegateNode(value); } protected NegateNode(ValueNode value) { super(ArithmeticOpTable::getNeg, value); } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { ValueNode ret = super.canonical(tool, forValue); if (ret != this) { return ret; } if (forValue instanceof NegateNode) { return ((NegateNode) forValue).getValue(); } if (forValue instanceof SubNode) { SubNode sub = (SubNode) forValue; return SubNode.create(sub.getY(), sub.getX()); } return this; } @Override public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) { builder.setResult(this, gen.emitNegate(builder.operand(getValue()))); } }