| /* |
| * 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 org.graalvm.compiler.nodes.calc; |
| |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_5; |
| |
| import java.util.EnumMap; |
| |
| import org.graalvm.compiler.core.common.calc.FloatConvert; |
| import org.graalvm.compiler.core.common.type.ArithmeticOpTable; |
| import org.graalvm.compiler.core.common.type.ArithmeticOpTable.FloatConvertOp; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.graph.spi.CanonicalizerTool; |
| import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.spi.ArithmeticLIRLowerable; |
| import org.graalvm.compiler.nodes.spi.Lowerable; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; |
| |
| import jdk.vm.ci.meta.Constant; |
| import jdk.vm.ci.meta.ConstantReflectionProvider; |
| |
| /** |
| * A {@code FloatConvert} converts between integers and floating point numbers according to Java |
| * semantics. |
| */ |
| @NodeInfo(cycles = CYCLES_5) |
| public final class FloatConvertNode extends UnaryArithmeticNode<FloatConvertOp> implements ConvertNode, Lowerable, ArithmeticLIRLowerable { |
| public static final NodeClass<FloatConvertNode> TYPE = NodeClass.create(FloatConvertNode.class); |
| |
| protected final FloatConvert op; |
| |
| private static final EnumMap<FloatConvert, SerializableUnaryFunction<FloatConvertOp>> getOps; |
| static { |
| getOps = new EnumMap<>(FloatConvert.class); |
| for (FloatConvert op : FloatConvert.values()) { |
| getOps.put(op, table -> table.getFloatConvert(op)); |
| } |
| } |
| |
| public FloatConvertNode(FloatConvert op, ValueNode input) { |
| super(TYPE, getOps.get(op), input); |
| this.op = op; |
| } |
| |
| public static ValueNode create(FloatConvert op, ValueNode input) { |
| ValueNode synonym = findSynonym(input, ArithmeticOpTable.forStamp(input.stamp()).getFloatConvert(op)); |
| if (synonym != null) { |
| return synonym; |
| } |
| return new FloatConvertNode(op, input); |
| } |
| |
| public FloatConvert getFloatConvert() { |
| return op; |
| } |
| |
| @Override |
| public Constant convert(Constant c, ConstantReflectionProvider constantReflection) { |
| return getArithmeticOp().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; |
| } |
| |
| @Override |
| public void lower(LoweringTool tool) { |
| tool.getLowerer().lower(this, tool); |
| } |
| |
| @Override |
| public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool gen) { |
| nodeValueMap.setResult(this, gen.emitFloatConvert(getFloatConvert(), nodeValueMap.operand(getValue()))); |
| } |
| } |