Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/FloatConvertNode.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> |
---|---|
date | Mon, 25 Aug 2014 13:45:12 +0200 |
parents | 06c15e88d383 |
children | 9010170f942f |
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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.calc; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.compiler.common.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.*; /** * A {@code FloatConvert} converts between integers and floating point numbers according to Java * semantics. */ @NodeInfo public class FloatConvertNode extends ConvertNode implements Lowerable, ArithmeticLIRLowerable { private final FloatConvert op; public static FloatConvertNode create(FloatConvert op, ValueNode input) { return USE_GENERATED_NODES ? new FloatConvertNodeGen(op, input) : new FloatConvertNode(op, input); } protected FloatConvertNode(FloatConvert op, ValueNode input) { super(createStamp(op, input), input); this.op = op; } private static Stamp createStamp(FloatConvert op, ValueNode input) { switch (op) { case I2F: case I2D: assert input.stamp() instanceof IntegerStamp && ((IntegerStamp) input.stamp()).getBits() == 32; break; case L2F: case L2D: assert input.stamp() instanceof IntegerStamp && ((IntegerStamp) input.stamp()).getBits() == 64; break; case F2I: case F2L: case F2D: assert input.stamp() instanceof FloatStamp && ((FloatStamp) input.stamp()).getBits() == 32; break; case D2I: case D2L: case D2F: assert input.stamp() instanceof FloatStamp && ((FloatStamp) input.stamp()).getBits() == 64; break; default: throw GraalInternalError.shouldNotReachHere(); } switch (op) { case F2I: case D2I: return StampFactory.forKind(Kind.Int); case F2L: case D2L: return StampFactory.forKind(Kind.Long); case I2F: case L2F: case D2F: return StampFactory.forKind(Kind.Float); case I2D: case L2D: case F2D: return StampFactory.forKind(Kind.Double); default: throw GraalInternalError.shouldNotReachHere(); } } public FloatConvert getOp() { return op; } @Override public boolean inferStamp() { return updateStamp(createStamp(op, getValue())); } private static Constant convert(FloatConvert op, Constant value) { switch (op) { case F2I: return Constant.forInt((int) value.asFloat()); case D2I: return Constant.forInt((int) value.asDouble()); case F2L: return Constant.forLong((long) value.asFloat()); case D2L: return Constant.forLong((long) value.asDouble()); case I2F: return Constant.forFloat(value.asInt()); case L2F: return Constant.forFloat(value.asLong()); case D2F: return Constant.forFloat((float) value.asDouble()); case I2D: return Constant.forDouble(value.asInt()); case L2D: return Constant.forDouble(value.asLong()); case F2D: return Constant.forDouble(value.asFloat()); default: throw GraalInternalError.shouldNotReachHere(); } } @Override public Constant convert(Constant c) { return convert(op, c); } @Override public Constant reverse(Constant c) { return convert(op.reverse(), c); } @Override public boolean isLossless() { switch (op) { case F2D: case I2D: return true; default: return false; } } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { if (forValue.isConstant()) { return ConstantNode.forConstant(evalConst(forValue.asConstant()), null); } else if (forValue instanceof FloatConvertNode) { FloatConvertNode other = (FloatConvertNode) forValue; if (other.isLossless() && other.op == this.op.reverse()) { return other.getValue(); } } return this; } public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) { builder.setResult(this, gen.emitFloatConvert(op, builder.operand(getValue()))); } }