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annotate graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/OptimisticOptimizations.java @ 5116:312b18b9cc3a

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added output when optimistic optimizations are disabled
author Christian Haeubl <christian.haeubl@oracle.com>
date Mon, 19 Mar 2012 15:08:07 -0700
parents dad1ac9dba7d
children b6d1ba51d163
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.compiler;
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24
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25 import com.oracle.graal.debug.*;
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26 import com.oracle.max.cri.ri.*;
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27 import com.oracle.max.criutils.*;
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30
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31 public final class OptimisticOptimizations {
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32 public static OptimisticOptimizations ALL = new OptimisticOptimizations(true, true, true, true);
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33 public static OptimisticOptimizations NONE = new OptimisticOptimizations(false, false, false, false);
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34 private static final DebugMetric disabledOptimisticOptsMetric = Debug.metric("DisabledOptimisticOpts");
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35
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36 private final boolean removeNeverExecutedCode;
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37 private final boolean useTypeCheckedInlining;
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38 private final boolean useTypeCheckHints;
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39 private final boolean useExceptionProbability;
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40
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41 public OptimisticOptimizations(RiResolvedMethod method) {
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42 RiProfilingInfo profilingInfo = method.profilingInfo();
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43 removeNeverExecutedCode = checkDeoptimization(profilingInfo, RiDeoptReason.UnreachedCode);
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44 useTypeCheckedInlining = checkDeoptimization(profilingInfo, RiDeoptReason.TypeCheckedInliningViolated);
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45 useTypeCheckHints = checkDeoptimization(profilingInfo, RiDeoptReason.OptimizedTypeCheckViolated);
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46 useExceptionProbability = checkDeoptimization(profilingInfo, RiDeoptReason.NotCompiledExceptionHandler);
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47 }
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48
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49 private static boolean checkDeoptimization(RiProfilingInfo profilingInfo, RiDeoptReason reason) {
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50 boolean result = profilingInfo.getDeoptimizationCount(reason) < GraalOptions.MaximumDeoptsBeforeDisablingOptimisticOptimization;
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51 if (!result) {
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52 if (GraalOptions.PrintDisabledOptimisticOptimizations) {
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53 TTY.println("WARN: deactivated optimistic optimization because of %s", reason.name());
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54 }
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55 disabledOptimisticOptsMetric.increment();
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56 }
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57 return result;
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58 }
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59
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60 public OptimisticOptimizations(boolean removeNeverExecutedCode, boolean useTypeCheckedInlining, boolean useTypeCheckHints, boolean useExceptionProbability) {
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61 this.removeNeverExecutedCode = removeNeverExecutedCode;
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62 this.useTypeCheckedInlining = useTypeCheckedInlining;
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63 this.useTypeCheckHints = useTypeCheckHints;
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64 this.useExceptionProbability = useExceptionProbability;
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65 }
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66
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67 public boolean removeNeverExecutedCode() {
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68 return GraalOptions.RemoveNeverExecutedCode && removeNeverExecutedCode;
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69 }
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70
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71 public boolean useUseTypeCheckHints() {
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72 return GraalOptions.UseTypeCheckHints && useTypeCheckHints;
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73 }
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74
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75 public boolean inlineMonomorphicCalls() {
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76 return GraalOptions.InlineMonomorphicCalls && useTypeCheckedInlining;
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77 }
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78
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79 public boolean inlinePolymorphicCalls() {
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80 return GraalOptions.InlinePolymorphicCalls && useTypeCheckedInlining;
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81 }
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82
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83 public boolean inlineMegamorphicCalls() {
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84 return GraalOptions.InlineMegamorphicCalls && useTypeCheckedInlining;
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85 }
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86
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87 public boolean useExceptionProbability() {
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88 return useExceptionProbability;
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89 }
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90 }