Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/NegateNode.java @ 16895:06c15e88d383
added factory method to all Node classes; replaced Node classes instantiation with calls to factory methods; replaced identity tests on Node classes with ' == <node class>.getGenClass()' idiom
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 18 Aug 2014 14:04:21 +0200 |
parents | cbd42807a31f |
children | 0fe4732e5181 |
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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.api.meta.*; import com.oracle.graal.compiler.common.*; 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.*; import com.oracle.graal.nodes.type.*; /** * The {@code NegateNode} node negates its operand. */ @NodeInfo public class NegateNode extends UnaryNode implements ArithmeticLIRLowerable, NarrowableArithmeticNode { @Override public boolean inferStamp() { return updateStamp(StampTool.negate(getValue().stamp())); } /** * Creates new NegateNode instance. * * @param value the instruction producing the value that is input to this instruction */ public static NegateNode create(ValueNode value) { return new NegateNodeGen(value); } protected NegateNode(ValueNode value) { super(StampTool.negate(value.stamp()), value); } public Constant evalConst(Constant... inputs) { assert inputs.length == 1; Constant constant = inputs[0]; switch (constant.getKind()) { case Int: return Constant.forInt(-(constant.asInt())); case Long: return Constant.forLong(-(constant.asLong())); case Float: return Constant.forFloat(-(constant.asFloat())); case Double: return Constant.forDouble(-(constant.asDouble())); default: throw GraalInternalError.shouldNotReachHere("unknown kind " + constant.getKind()); } } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { if (forValue.isConstant()) { return ConstantNode.forConstant(evalConst(forValue.asConstant()), null); } if (forValue instanceof NegateNode) { return ((NegateNode) forValue).getValue(); } if (forValue instanceof IntegerSubNode) { IntegerSubNode sub = (IntegerSubNode) forValue; return IntegerSubNode.create(sub.getY(), sub.getX()); } return this; } @Override public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) { builder.setResult(this, gen.emitNegate(builder.operand(getValue()))); } }