Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/FloatConvertNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | f57d86eb036f |
children | 9220566922ab |
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/* * Copyright (c) 2014, 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.calc.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.compiler.common.type.ArithmeticOpTable.FloatConvertOp; 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 final class FloatConvertNode extends UnaryArithmeticNode<FloatConvertOp> implements ConvertNode, Lowerable, ArithmeticLIRLowerable { protected final FloatConvert op; public FloatConvertNode(FloatConvert op, ValueNode input) { super(table -> table.getFloatConvert(op), input); this.op = op; } public FloatConvert getFloatConvert() { return op; } @Override public Constant convert(Constant c, ConstantReflectionProvider constantReflection) { return getOp(getValue()).foldConstant(c); } @Override public Constant reverse(Constant c, ConstantReflectionProvider constantReflection) { FloatConvertOp reverse = ArithmeticOpTable.forStamp(stamp()).getFloatConvert(op.reverse()); return reverse.foldConstant(c); } @Override public boolean isLossless() { switch (getFloatConvert()) { case F2D: case I2D: return true; default: return false; } } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { ValueNode ret = super.canonical(tool, forValue); if (ret != this) { return ret; } 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(getFloatConvert(), builder.operand(getValue()))); } }