1 /*
   2  * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.replacements.amd64;
  24 
  25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_5;
  26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
  27 
  28 import org.graalvm.compiler.core.common.calc.FloatConvert;
  29 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.FloatConvertOp;
  30 import org.graalvm.compiler.graph.NodeClass;
  31 import org.graalvm.compiler.graph.spi.CanonicalizerTool;
  32 import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
  33 import org.graalvm.compiler.nodeinfo.NodeInfo;
  34 import org.graalvm.compiler.nodes.ValueNode;
  35 import org.graalvm.compiler.nodes.calc.FloatConvertNode;
  36 import org.graalvm.compiler.nodes.calc.UnaryArithmeticNode;
  37 import org.graalvm.compiler.nodes.spi.ArithmeticLIRLowerable;
  38 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  39 
  40 /**
  41  * This node has the semantics of the AMD64 floating point conversions. It is used in the lowering
  42  * of the {@link FloatConvertNode} which, on AMD64 needs a {@link AMD64FloatConvertNode} plus some
  43  * fixup code that handles the corner cases that differ between AMD64 and Java.
  44  */
  45 @NodeInfo(cycles = CYCLES_5, size = SIZE_1)
  46 public final class AMD64FloatConvertNode extends UnaryArithmeticNode<FloatConvertOp> implements ArithmeticLIRLowerable {
  47     public static final NodeClass<AMD64FloatConvertNode> TYPE = NodeClass.create(AMD64FloatConvertNode.class);
  48 
  49     protected final FloatConvert op;
  50 
  51     public AMD64FloatConvertNode(FloatConvert op, ValueNode value) {
  52         super(TYPE, table -> table.getFloatConvert(op), value);
  53         this.op = op;
  54     }
  55 
  56     @Override
  57     public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
  58         // nothing to do
  59         return this;
  60     }
  61 
  62     @Override
  63     public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool gen) {
  64         nodeValueMap.setResult(this, gen.emitFloatConvert(op, nodeValueMap.operand(getValue())));
  65     }
  66 }