Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/FloatMulNode.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 | 5762848171e7 |
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/* * Copyright (c) 2011, 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.graph.*; 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.*; @NodeInfo(shortName = "*") public class FloatMulNode extends FloatArithmeticNode { public static FloatMulNode create(ValueNode x, ValueNode y, boolean isStrictFP) { return USE_GENERATED_NODES ? new FloatMulNodeGen(x, y, isStrictFP) : new FloatMulNode(x, y, isStrictFP); } public static Class<? extends FloatMulNode> getGenClass() { return USE_GENERATED_NODES ? FloatMulNodeGen.class : FloatMulNode.class; } protected FloatMulNode(ValueNode x, ValueNode y, boolean isStrictFP) { super(x.stamp().unrestricted(), x, y, isStrictFP); } public Constant evalConst(Constant... inputs) { assert inputs.length == 2; assert inputs[0].getKind() == inputs[1].getKind(); if (inputs[0].getKind() == Kind.Float) { return Constant.forFloat(inputs[0].asFloat() * inputs[1].asFloat()); } else { assert inputs[0].getKind() == Kind.Double; return Constant.forDouble(inputs[0].asDouble() * inputs[1].asDouble()); } } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) { if (forX.isConstant() && !forY.isConstant()) { return FloatMulNode.create(forY, forX, isStrictFP()); } if (forX.isConstant()) { return ConstantNode.forPrimitive(evalConst(forX.asConstant(), forY.asConstant())); } if (forY.isConstant()) { @SuppressWarnings("hiding") Constant y = forY.asConstant(); switch (y.getKind()) { case Float: if (y.asFloat() == 1.0f) { return forX; } break; case Double: if (y.asDouble() == 1.0) { return forX; } break; default: throw GraalGraphInternalError.shouldNotReachHere(); } } return this; } @Override public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) { Value op1 = builder.operand(getX()); Value op2 = builder.operand(getY()); if (!getY().isConstant() && !FloatAddNode.livesLonger(this, getY(), builder)) { Value op = op1; op1 = op2; op2 = op; } builder.setResult(this, gen.emitMul(op1, op2)); } }