1 /*

     2  * Copyright (c) 2013, 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 

    24 

    25 package org.graalvm.compiler.hotspot.amd64;

    26 

    27 import static org.graalvm.compiler.replacements.SnippetTemplate.DEFAULT_REPLACER;

    28 

    29 import org.graalvm.compiler.api.replacements.Snippet;

    30 import org.graalvm.compiler.api.replacements.SnippetReflectionProvider;

    31 import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;

    32 import org.graalvm.compiler.debug.DebugHandlersFactory;

    33 import org.graalvm.compiler.debug.GraalError;

    34 import org.graalvm.compiler.graph.Node.ConstantNodeParameter;

    35 import org.graalvm.compiler.graph.Node.NodeIntrinsic;

    36 import org.graalvm.compiler.nodes.extended.ForeignCallNode;

    37 import org.graalvm.compiler.nodes.spi.LoweringTool;

    38 import org.graalvm.compiler.options.OptionValues;

    39 import org.graalvm.compiler.phases.util.Providers;

    40 import org.graalvm.compiler.replacements.SnippetTemplate.AbstractTemplates;

    41 import org.graalvm.compiler.replacements.SnippetTemplate.Arguments;

    42 import org.graalvm.compiler.replacements.SnippetTemplate.SnippetInfo;

    43 import org.graalvm.compiler.replacements.Snippets;

    44 import org.graalvm.compiler.replacements.nodes.UnaryMathIntrinsicNode;

    45 import org.graalvm.compiler.replacements.nodes.UnaryMathIntrinsicNode.UnaryOperation;

    46 

    47 import jdk.vm.ci.code.TargetDescription;

    48 

    49 public class AMD64X87MathSnippets implements Snippets {

    50 

    51     private static final double PI_4 = Math.PI / 4;

    52 

    53     @Snippet

    54     public static double sin(double input) {

    55         if (Math.abs(input) < PI_4) {

    56             return AMD64X87MathIntrinsicNode.compute(input, UnaryOperation.SIN);

    57         }

    58         return callDouble1(UnaryOperation.SIN.foreignCallDescriptor, input);

    59     }

    60 

    61     @Snippet

    62     public static double cos(double input) {

    63         if (Math.abs(input) < PI_4) {

    64             return AMD64X87MathIntrinsicNode.compute(input, UnaryOperation.COS);

    65         }

    66         return callDouble1(UnaryOperation.COS.foreignCallDescriptor, input);

    67     }

    68 

    69     @Snippet

    70     public static double tan(double input) {

    71         if (Math.abs(input) < PI_4) {

    72             return AMD64X87MathIntrinsicNode.compute(input, UnaryOperation.TAN);

    73         }

    74         return callDouble1(UnaryOperation.TAN.foreignCallDescriptor, input);

    75     }

    76 

    77     @NodeIntrinsic(value = ForeignCallNode.class)

    78     private static native double callDouble1(@ConstantNodeParameter ForeignCallDescriptor descriptor, double value);

    79 

    80     public static class Templates extends AbstractTemplates {

    81 

    82         private final SnippetInfo sin;

    83         private final SnippetInfo cos;

    84         private final SnippetInfo tan;

    85 

    86         public Templates(OptionValues options, Iterable<DebugHandlersFactory> factories, Providers providers, SnippetReflectionProvider snippetReflection, TargetDescription target) {

    87             super(options, factories, providers, snippetReflection, target);

    88 

    89             sin = snippet(AMD64X87MathSnippets.class, "sin");

    90             cos = snippet(AMD64X87MathSnippets.class, "cos");

    91             tan = snippet(AMD64X87MathSnippets.class, "tan");

    92         }

    93 

    94         public void lower(UnaryMathIntrinsicNode mathIntrinsicNode, LoweringTool tool) {

    95             SnippetInfo info;

    96 

    97             switch (mathIntrinsicNode.getOperation()) {

    98                 case SIN:

    99                     info = sin;

   100                     break;

   101                 case COS:

   102                     info = cos;

   103                     break;

   104                 case TAN:

   105                     info = tan;

   106                     break;

   107                 default:

   108                     throw GraalError.shouldNotReachHere("Snippet not found for math intrinsic " + mathIntrinsicNode.getOperation().name());

   109             }

   110 

   111             Arguments args = new Arguments(info, mathIntrinsicNode.graph().getGuardsStage(), tool.getLoweringStage());

   112             args.add("input", mathIntrinsicNode.getValue());

   113             template(mathIntrinsicNode, args).instantiate(providers.getMetaAccess(), mathIntrinsicNode, DEFAULT_REPLACER, tool, args);

   114             mathIntrinsicNode.safeDelete();

   115         }

   116     }

   117 }