Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/FloatAddNode.java @ 11881:da9db8331658
moved Canonicalizable and Simplifiable to the com.oracle.graal.graph project (GRAAL-506)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 01 Oct 2013 20:38:25 +0200 |
parents | 9a747d8e0d0f |
children | 673f93db4adc |
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/* * Copyright (c) 2011, 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.nodes.*; import com.oracle.graal.nodes.spi.*; @NodeInfo(shortName = "+") public final class FloatAddNode extends FloatArithmeticNode implements Canonicalizable { public FloatAddNode(Kind kind, ValueNode x, ValueNode y, boolean isStrictFP) { super(kind, x, y, isStrictFP); } @Override public Node canonical(CanonicalizerTool tool) { if (x().isConstant() && !y().isConstant()) { return graph().unique(new FloatAddNode(kind(), y(), x(), isStrictFP())); } if (x().isConstant()) { if (kind() == Kind.Float) { return ConstantNode.forFloat(x().asConstant().asFloat() + y().asConstant().asFloat(), graph()); } else { assert kind() == Kind.Double; return ConstantNode.forDouble(x().asConstant().asDouble() + y().asConstant().asDouble(), graph()); } } else if (y().isConstant()) { if (kind() == Kind.Float) { float c = y().asConstant().asFloat(); if (c == 0.0f) { return x(); } } else { assert kind() == Kind.Double; double c = y().asConstant().asDouble(); if (c == 0.0) { return x(); } } } return this; } @Override public void generate(ArithmeticLIRGenerator gen) { Value op1 = gen.operand(x()); Value op2 = gen.operand(y()); if (!y().isConstant() && !livesLonger(this, y(), gen)) { Value op = op1; op1 = op2; op2 = op; } gen.setResult(this, gen.emitAdd(op1, op2)); } public static boolean livesLonger(ValueNode after, ValueNode value, ArithmeticLIRGenerator gen) { for (Node usage : value.usages()) { if (usage != after && usage instanceof ValueNode && gen.operand(((ValueNode) usage)) != null) { return true; } } return false; } }