Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/InliningPhase.java @ 7296:8d9c7a109967
Fix elimination of unnecessary UnsafeCastNode
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 26 Dec 2012 13:36:41 -0800 |
parents | d0c4b6f8d67f |
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1 /* |
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2 * Copyright (c) 2011, 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.phases.common; |
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24 |
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25 import java.lang.reflect.*; |
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26 import java.util.*; |
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27 |
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28 import com.oracle.graal.api.code.*; |
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29 import com.oracle.graal.api.meta.*; |
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30 import com.oracle.graal.debug.*; |
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31 import com.oracle.graal.graph.*; |
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32 import com.oracle.graal.nodes.*; |
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33 import com.oracle.graal.nodes.spi.*; |
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34 import com.oracle.graal.phases.*; |
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35 import com.oracle.graal.phases.PhasePlan.PhasePosition; |
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36 import com.oracle.graal.phases.common.InliningUtil.InlineInfo; |
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37 import com.oracle.graal.phases.common.InliningUtil.InliningCallback; |
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38 import com.oracle.graal.phases.common.InliningUtil.InliningPolicy; |
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39 import com.oracle.graal.phases.common.InliningUtil.WeightComputationPolicy; |
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40 |
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41 public class InliningPhase extends Phase implements InliningCallback { |
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42 /* |
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43 * - Detect method which only call another method with some parameters set to constants: void foo(a) -> void foo(a, b) -> void foo(a, b, c) ... |
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44 * These should not be taken into account when determining inlining depth. |
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45 * - honor the result of overrideInliningDecision(0, caller, invoke.bci, method, true); |
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46 */ |
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47 |
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48 private final TargetDescription target; |
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49 private final PhasePlan plan; |
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50 |
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51 private final GraalCodeCacheProvider runtime; |
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52 private final Assumptions assumptions; |
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53 private final GraphCache cache; |
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54 private final InliningPolicy inliningPolicy; |
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55 |
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56 // Metrics |
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57 private static final DebugMetric metricInliningPerformed = Debug.metric("InliningPerformed"); |
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58 private static final DebugMetric metricInliningConsidered = Debug.metric("InliningConsidered"); |
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59 private static final DebugMetric metricInliningStoppedByMaxDesiredSize = Debug.metric("InliningStoppedByMaxDesiredSize"); |
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60 private static final DebugMetric metricInliningRuns = Debug.metric("Runs"); |
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61 |
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62 public InliningPhase(TargetDescription target, GraalCodeCacheProvider runtime, Collection<Invoke> hints, Assumptions assumptions, GraphCache cache, PhasePlan plan, OptimisticOptimizations optimisticOpts) { |
7227 | 63 this(target, runtime, assumptions, cache, plan, createInliningPolicy(assumptions, optimisticOpts, hints)); |
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64 } |
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65 |
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66 public InliningPhase(TargetDescription target, GraalCodeCacheProvider runtime, Assumptions assumptions, GraphCache cache, PhasePlan plan, InliningPolicy inliningPolicy) { |
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67 this.target = target; |
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68 this.runtime = runtime; |
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69 this.assumptions = assumptions; |
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70 this.cache = cache; |
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71 this.plan = plan; |
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72 this.inliningPolicy = inliningPolicy; |
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73 } |
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74 |
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75 @Override |
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76 protected void run(final StructuredGraph graph) { |
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77 inliningPolicy.initialize(graph); |
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78 |
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79 while (inliningPolicy.continueInlining(graph)) { |
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80 final InlineInfo candidate = inliningPolicy.next(); |
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81 if (candidate != null) { |
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82 boolean isWorthInlining = inliningPolicy.isWorthInlining(candidate); |
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83 |
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84 metricInliningConsidered.increment(); |
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85 if (isWorthInlining) { |
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86 int mark = graph.getMark(); |
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87 try { |
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88 List<Node> invokeUsages = candidate.invoke().node().usages().snapshot(); |
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89 candidate.inline(graph, runtime, this, assumptions); |
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90 Debug.dump(graph, "after %s", candidate); |
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91 Iterable<Node> newNodes = graph.getNewNodes(mark); |
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92 if (GraalOptions.OptCanonicalizer) { |
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93 new CanonicalizerPhase(target, runtime, assumptions, invokeUsages, mark).apply(graph); |
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94 } |
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95 metricInliningPerformed.increment(); |
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96 |
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97 inliningPolicy.scanInvokes(newNodes); |
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98 } catch (BailoutException bailout) { |
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99 // TODO determine if we should really bail out of the whole compilation. |
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100 throw bailout; |
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101 } catch (AssertionError e) { |
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102 throw new GraalInternalError(e).addContext(candidate.toString()); |
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103 } catch (RuntimeException e) { |
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104 throw new GraalInternalError(e).addContext(candidate.toString()); |
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105 } catch (GraalInternalError e) { |
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106 throw e.addContext(candidate.toString()); |
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107 } |
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108 } |
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109 } |
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110 } |
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111 } |
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112 |
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113 @Override |
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114 public StructuredGraph buildGraph(final ResolvedJavaMethod method) { |
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115 metricInliningRuns.increment(); |
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116 if (GraalOptions.CacheGraphs && cache != null) { |
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117 StructuredGraph cachedGraph = cache.get(method); |
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118 if (cachedGraph != null) { |
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119 return cachedGraph; |
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120 } |
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121 } |
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122 StructuredGraph newGraph = new StructuredGraph(method); |
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123 if (plan != null) { |
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124 plan.runPhases(PhasePosition.AFTER_PARSING, newGraph); |
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125 } |
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126 assert newGraph.start().next() != null : "graph needs to be populated during PhasePosition.AFTER_PARSING"; |
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127 |
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128 if (GraalOptions.ProbabilityAnalysis) { |
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129 new DeadCodeEliminationPhase().apply(newGraph); |
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130 new ComputeProbabilityPhase().apply(newGraph); |
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131 } |
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132 if (GraalOptions.OptCanonicalizer) { |
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133 new CanonicalizerPhase(target, runtime, assumptions).apply(newGraph); |
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134 } |
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135 if (GraalOptions.CullFrameStates) { |
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136 new CullFrameStatesPhase().apply(newGraph); |
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137 } |
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138 if (GraalOptions.CacheGraphs && cache != null) { |
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139 cache.put(newGraph); |
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140 } |
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141 return newGraph; |
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142 } |
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143 |
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144 private interface InliningDecision { |
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145 boolean isWorthInlining(InlineInfo info); |
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146 } |
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147 |
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148 private abstract static class AbstractInliningDecision implements InliningDecision { |
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149 public static boolean decideSizeBasedInlining(InlineInfo info, double maxSize) { |
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150 boolean success = info.weight() <= maxSize; |
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151 if (GraalOptions.Debug) { |
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152 String formatterString = success ? "(size %f <= %f)" : "(too large %f > %f)"; |
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153 InliningUtil.logInliningDecision(info, success, formatterString, info.weight(), maxSize); |
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154 } |
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155 return success; |
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156 } |
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157 |
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158 public static boolean checkCompiledCodeSize(InlineInfo info) { |
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159 if (GraalOptions.SmallCompiledCodeSize >= 0 && info.compiledCodeSize() > GraalOptions.SmallCompiledCodeSize) { |
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160 InliningUtil.logNotInlinedMethod(info, "(CompiledCodeSize %d > %d)", info.compiledCodeSize(), GraalOptions.SmallCompiledCodeSize); |
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161 return false; |
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162 } |
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163 return true; |
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164 } |
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165 } |
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166 |
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167 private static class C1StaticSizeBasedInliningDecision extends AbstractInliningDecision { |
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168 @Override |
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169 public boolean isWorthInlining(InlineInfo info) { |
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170 double maxSize = Math.max(GraalOptions.MaximumTrivialSize, Math.pow(GraalOptions.NestedInliningSizeRatio, info.level()) * GraalOptions.MaximumInlineSize); |
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171 return decideSizeBasedInlining(info, maxSize); |
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172 } |
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173 } |
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174 |
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175 private static class MinimumCodeSizeBasedInliningDecision extends AbstractInliningDecision { |
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176 @Override |
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177 public boolean isWorthInlining(InlineInfo info) { |
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178 assert GraalOptions.ProbabilityAnalysis; |
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179 if (!checkCompiledCodeSize(info)) { |
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180 return false; |
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181 } |
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182 |
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183 double inlineWeight = Math.min(GraalOptions.ProbabilityCapForInlining, info.invoke().probability()); |
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184 double maxSize = Math.pow(GraalOptions.NestedInliningSizeRatio, info.level()) * GraalOptions.MaximumInlineSize * inlineWeight; |
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185 maxSize = Math.max(GraalOptions.MaximumTrivialSize, maxSize); |
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186 |
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187 return decideSizeBasedInlining(info, maxSize); |
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188 } |
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189 } |
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190 |
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191 private static class DynamicSizeBasedInliningDecision extends AbstractInliningDecision { |
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192 @Override |
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193 public boolean isWorthInlining(InlineInfo info) { |
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194 assert GraalOptions.ProbabilityAnalysis; |
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195 if (!checkCompiledCodeSize(info)) { |
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196 return false; |
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197 } |
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198 |
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199 double inlineBoost = Math.min(GraalOptions.ProbabilityCapForInlining, info.invoke().probability()) + Math.log10(Math.max(1, info.invoke().probability() - GraalOptions.ProbabilityCapForInlining + 1)); |
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200 double maxSize = Math.pow(GraalOptions.NestedInliningSizeRatio, info.level()) * GraalOptions.MaximumInlineSize; |
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201 maxSize = maxSize + maxSize * inlineBoost; |
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202 maxSize = Math.min(GraalOptions.MaximumGreedyInlineSize, Math.max(GraalOptions.MaximumTrivialSize, maxSize)); |
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203 |
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204 return decideSizeBasedInlining(info, maxSize); |
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205 } |
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206 } |
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207 |
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208 private static class GreedySizeBasedInliningDecision extends AbstractInliningDecision { |
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209 @Override |
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210 public boolean isWorthInlining(InlineInfo info) { |
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211 assert GraalOptions.ProbabilityAnalysis; |
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212 if (!checkCompiledCodeSize(info)) { |
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213 return false; |
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214 } |
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215 |
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216 double maxSize = GraalOptions.MaximumGreedyInlineSize; |
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217 if (GraalOptions.InliningBonusPerTransferredValue != 0) { |
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218 Signature signature = info.invoke().methodCallTarget().targetMethod().getSignature(); |
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219 int transferredValues = signature.getParameterCount(!Modifier.isStatic(info.invoke().methodCallTarget().targetMethod().getModifiers())); |
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220 if (signature.getReturnKind() != Kind.Void) { |
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221 transferredValues++; |
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222 } |
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223 maxSize += transferredValues * GraalOptions.InliningBonusPerTransferredValue; |
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224 } |
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225 |
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226 double inlineRatio = Math.min(GraalOptions.ProbabilityCapForInlining, info.invoke().probability()); |
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227 maxSize = Math.pow(GraalOptions.NestedInliningSizeRatio, info.level()) * maxSize * inlineRatio; |
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228 maxSize = Math.max(maxSize, GraalOptions.MaximumTrivialSize); |
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229 |
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230 return decideSizeBasedInlining(info, maxSize); |
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231 } |
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232 } |
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233 |
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234 private static class GreedyMachineCodeInliningDecision extends AbstractInliningDecision { |
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235 @Override |
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236 public boolean isWorthInlining(InlineInfo info) { |
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237 assert GraalOptions.ProbabilityAnalysis; |
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238 |
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239 double maxSize = GraalOptions.MaximumGreedyInlineSize; |
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240 double inlineRatio = Math.min(GraalOptions.ProbabilityCapForInlining, info.invoke().probability()); |
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241 maxSize = Math.pow(GraalOptions.NestedInliningSizeRatio, info.level()) * maxSize * inlineRatio; |
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242 maxSize = Math.max(maxSize, GraalOptions.MaximumTrivialSize); |
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243 |
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244 return decideSizeBasedInlining(info, maxSize); |
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245 } |
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246 } |
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247 |
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248 private static class BytecodeSizeBasedWeightComputationPolicy implements WeightComputationPolicy { |
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249 @Override |
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250 public double computeWeight(ResolvedJavaMethod caller, ResolvedJavaMethod method, Invoke invoke, boolean preferredInvoke) { |
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251 double codeSize = method.getCodeSize(); |
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252 if (preferredInvoke) { |
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253 codeSize = codeSize / GraalOptions.BoostInliningForEscapeAnalysis; |
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254 } |
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255 return codeSize; |
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256 } |
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257 } |
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258 |
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259 private static class ComplexityBasedWeightComputationPolicy implements WeightComputationPolicy { |
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260 @Override |
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261 public double computeWeight(ResolvedJavaMethod caller, ResolvedJavaMethod method, Invoke invoke, boolean preferredInvoke) { |
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262 double complexity = method.getCompilationComplexity(); |
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263 if (preferredInvoke) { |
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264 complexity = complexity / GraalOptions.BoostInliningForEscapeAnalysis; |
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265 } |
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266 return complexity; |
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267 } |
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268 } |
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269 |
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270 private static class CompiledCodeSizeWeightComputationPolicy implements WeightComputationPolicy { |
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271 @Override |
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272 public double computeWeight(ResolvedJavaMethod caller, ResolvedJavaMethod method, Invoke invoke, boolean preferredInvoke) { |
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273 int compiledCodeSize = method.getCompiledCodeSize(); |
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274 return compiledCodeSize > 0 ? compiledCodeSize : method.getCodeSize() * 10; |
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275 } |
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276 } |
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277 |
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278 private static class CFInliningPolicy implements InliningPolicy { |
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279 private final InliningDecision inliningDecision; |
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280 private final WeightComputationPolicy weightComputationPolicy; |
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281 private final Collection<Invoke> hints; |
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282 private final Assumptions assumptions; |
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283 private final OptimisticOptimizations optimisticOpts; |
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284 private final Deque<Invoke> sortedInvokes; |
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285 private NodeBitMap visitedFixedNodes; |
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286 private FixedNode invokePredecessor; |
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287 |
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288 public CFInliningPolicy(InliningDecision inliningPolicy, WeightComputationPolicy weightComputationPolicy, Collection<Invoke> hints, |
7227 | 289 Assumptions assumptions, OptimisticOptimizations optimisticOpts) { |
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290 this.inliningDecision = inliningPolicy; |
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291 this.weightComputationPolicy = weightComputationPolicy; |
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292 this.hints = hints; |
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293 this.assumptions = assumptions; |
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294 this.optimisticOpts = optimisticOpts; |
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295 this.sortedInvokes = new ArrayDeque<>(); |
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296 } |
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297 |
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298 public boolean continueInlining(StructuredGraph graph) { |
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299 if (graph.getNodeCount() >= GraalOptions.MaximumDesiredSize) { |
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300 InliningUtil.logInliningDecision("inlining is cut off by MaximumDesiredSize"); |
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301 metricInliningStoppedByMaxDesiredSize.increment(); |
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302 return false; |
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303 } |
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304 |
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305 return !sortedInvokes.isEmpty(); |
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306 } |
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307 |
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308 public InlineInfo next() { |
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309 Invoke invoke = sortedInvokes.pop(); |
7227 | 310 InlineInfo info = InliningUtil.getInlineInfo(invoke, assumptions, this, optimisticOpts); |
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311 if (info != null) { |
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312 invokePredecessor = (FixedNode) info.invoke().predecessor(); |
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313 assert invokePredecessor.isAlive(); |
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314 } |
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315 return info; |
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316 } |
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317 |
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318 public boolean isWorthInlining(InlineInfo info) { |
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319 return inliningDecision.isWorthInlining(info); |
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320 } |
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321 |
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322 public void initialize(StructuredGraph graph) { |
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323 visitedFixedNodes = graph.createNodeBitMap(true); |
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324 scanGraphForInvokes(graph.start()); |
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325 if (hints != null) { |
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326 sortedInvokes.retainAll(hints); |
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327 } |
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328 } |
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329 |
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330 public void scanInvokes(Iterable<? extends Node> newNodes) { |
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331 scanGraphForInvokes(invokePredecessor); |
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332 } |
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333 |
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334 private void scanGraphForInvokes(FixedNode start) { |
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335 ArrayList<Invoke> invokes = new InliningIterator(start, visitedFixedNodes).apply(); |
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336 |
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337 // insert the newly found invokes in their correct control-flow order |
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338 for (int i = invokes.size() - 1; i >= 0; i--) { |
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339 sortedInvokes.addFirst(invokes.get(i)); |
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340 } |
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341 } |
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342 |
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343 public double inliningWeight(ResolvedJavaMethod caller, ResolvedJavaMethod method, Invoke invoke) { |
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344 boolean preferredInvoke = hints != null && hints.contains(invoke); |
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345 return weightComputationPolicy.computeWeight(caller, method, invoke, preferredInvoke); |
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346 } |
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347 } |
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348 |
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349 private static class PriorityInliningPolicy implements InliningPolicy { |
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350 private final InliningDecision inliningDecision; |
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351 private final WeightComputationPolicy weightComputationPolicy; |
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352 private final Collection<Invoke> hints; |
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353 private final Assumptions assumptions; |
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354 private final OptimisticOptimizations optimisticOpts; |
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355 private final PriorityQueue<InlineInfo> sortedCandidates; |
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356 |
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357 public PriorityInliningPolicy(InliningDecision inliningPolicy, WeightComputationPolicy weightComputationPolicy, Collection<Invoke> hints, |
7227 | 358 Assumptions assumptions, OptimisticOptimizations optimisticOpts) { |
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359 this.inliningDecision = inliningPolicy; |
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360 this.weightComputationPolicy = weightComputationPolicy; |
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361 this.hints = hints; |
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362 this.assumptions = assumptions; |
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363 this.optimisticOpts = optimisticOpts; |
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364 sortedCandidates = new PriorityQueue<>(); |
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365 } |
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366 |
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367 public boolean continueInlining(StructuredGraph graph) { |
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368 if (graph.getNodeCount() >= GraalOptions.MaximumDesiredSize) { |
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369 InliningUtil.logInliningDecision("inlining is cut off by MaximumDesiredSize"); |
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370 metricInliningStoppedByMaxDesiredSize.increment(); |
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371 return false; |
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372 } |
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373 |
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374 return !sortedCandidates.isEmpty(); |
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375 } |
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376 |
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377 public InlineInfo next() { |
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378 // refresh cached info before using it (it might have been in the queue for a long time) |
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379 InlineInfo info = sortedCandidates.remove(); |
7227 | 380 return InliningUtil.getInlineInfo(info.invoke(), assumptions, this, optimisticOpts); |
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381 } |
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382 |
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383 @Override |
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384 public boolean isWorthInlining(InlineInfo info) { |
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385 return inliningDecision.isWorthInlining(info); |
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386 } |
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387 |
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388 @SuppressWarnings("unchecked") |
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389 public void initialize(StructuredGraph graph) { |
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390 if (hints == null) { |
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391 scanInvokes(graph.getNodes(InvokeNode.class)); |
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392 scanInvokes(graph.getNodes(InvokeWithExceptionNode.class)); |
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393 } else { |
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394 scanInvokes((Iterable<? extends Node>) (Iterable<?>) hints); |
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395 } |
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396 } |
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397 |
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398 public void scanInvokes(Iterable<? extends Node> nodes) { |
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399 for (Node node: nodes) { |
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400 if (node != null) { |
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401 if (node instanceof Invoke) { |
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402 Invoke invoke = (Invoke) node; |
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403 scanInvoke(invoke); |
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404 } |
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405 for (Node usage : node.usages().filterInterface(Invoke.class).snapshot()) { |
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406 scanInvoke((Invoke) usage); |
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407 } |
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408 } |
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409 } |
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410 } |
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411 |
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412 private void scanInvoke(Invoke invoke) { |
7227 | 413 InlineInfo info = InliningUtil.getInlineInfo(invoke, assumptions, this, optimisticOpts); |
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414 if (info != null) { |
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415 sortedCandidates.add(info); |
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416 } |
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417 } |
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418 |
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419 @Override |
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420 public double inliningWeight(ResolvedJavaMethod caller, ResolvedJavaMethod method, Invoke invoke) { |
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421 boolean preferredInvoke = hints != null && hints.contains(invoke); |
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422 return weightComputationPolicy.computeWeight(caller, method, invoke, preferredInvoke); |
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423 } |
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424 } |
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425 |
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426 private static class InliningIterator { |
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427 private final FixedNode start; |
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428 private final NodeBitMap processedNodes; |
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429 |
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430 private final Deque<FixedNode> nodeQueue; |
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431 private final NodeBitMap queuedNodes; |
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432 |
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433 public InliningIterator(FixedNode start, NodeBitMap visitedFixedNodes) { |
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434 this.start = start; |
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435 this.processedNodes = visitedFixedNodes; |
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436 |
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437 this.nodeQueue = new ArrayDeque<>(); |
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438 this.queuedNodes = visitedFixedNodes.copy(); |
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439 |
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440 assert start.isAlive(); |
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441 } |
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442 |
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443 public ArrayList<Invoke> apply() { |
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444 ArrayList<Invoke> invokes = new ArrayList<>(); |
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445 FixedNode current = start; |
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446 do { |
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447 assert current.isAlive(); |
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448 processedNodes.mark(current); |
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449 |
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450 if (current instanceof InvokeWithExceptionNode || current instanceof InvokeNode) { |
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451 invokes.add((Invoke) current); |
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452 queueSuccessors(current); |
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453 current = nextQueuedNode(); |
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454 } else if (current instanceof LoopBeginNode) { |
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455 current = ((LoopBeginNode) current).next(); |
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456 assert current != null; |
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457 } else if (current instanceof LoopEndNode) { |
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458 current = nextQueuedNode(); |
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459 } else if (current instanceof MergeNode) { |
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460 current = ((MergeNode) current).next(); |
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461 assert current != null; |
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462 } else if (current instanceof FixedWithNextNode) { |
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463 queueSuccessors(current); |
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464 current = nextQueuedNode(); |
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465 } else if (current instanceof EndNode) { |
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466 queueMerge((EndNode) current); |
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467 current = nextQueuedNode(); |
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468 } else if (current instanceof DeoptimizeNode) { |
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469 current = nextQueuedNode(); |
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470 } else if (current instanceof ReturnNode) { |
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471 current = nextQueuedNode(); |
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472 } else if (current instanceof UnwindNode) { |
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473 current = nextQueuedNode(); |
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474 } else if (current instanceof ControlSplitNode) { |
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475 queueSuccessors(current); |
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476 current = nextQueuedNode(); |
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477 } else { |
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478 assert false : current; |
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479 } |
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480 } while(current != null); |
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481 |
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482 return invokes; |
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483 } |
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484 |
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485 private void queueSuccessors(FixedNode x) { |
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486 for (Node node : x.successors()) { |
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487 if (node != null && !queuedNodes.isMarked(node)) { |
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488 queuedNodes.mark(node); |
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489 nodeQueue.addFirst((FixedNode) node); |
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490 } |
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491 } |
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492 } |
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493 |
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494 private FixedNode nextQueuedNode() { |
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495 if (nodeQueue.isEmpty()) { |
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496 return null; |
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497 } |
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498 |
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499 FixedNode result = nodeQueue.removeFirst(); |
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500 assert queuedNodes.isMarked(result); |
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501 return result; |
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502 } |
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503 |
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504 private void queueMerge(EndNode end) { |
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505 MergeNode merge = end.merge(); |
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506 if (!queuedNodes.isMarked(merge) && visitedAllEnds(merge)) { |
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507 queuedNodes.mark(merge); |
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508 nodeQueue.add(merge); |
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509 } |
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510 } |
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511 |
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512 private boolean visitedAllEnds(MergeNode merge) { |
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513 for (int i = 0; i < merge.forwardEndCount(); i++) { |
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514 if (!processedNodes.isMarked(merge.forwardEndAt(i))) { |
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515 return false; |
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516 } |
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517 } |
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518 return true; |
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519 } |
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520 } |
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521 |
7227 | 522 private static InliningPolicy createInliningPolicy(Assumptions assumptions, OptimisticOptimizations optimisticOpts, Collection<Invoke> hints) { |
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523 switch(GraalOptions.InliningPolicy) { |
7227 | 524 case 0: return new CFInliningPolicy(createInliningDecision(), createWeightComputationPolicy(), hints, assumptions, optimisticOpts); |
525 case 1: return new PriorityInliningPolicy(createInliningDecision(), createWeightComputationPolicy(), hints, assumptions, optimisticOpts); | |
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526 default: |
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527 GraalInternalError.shouldNotReachHere(); |
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528 return null; |
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529 } |
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530 } |
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531 |
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532 private static InliningDecision createInliningDecision() { |
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533 switch(GraalOptions.InliningDecision) { |
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534 case 1: return new C1StaticSizeBasedInliningDecision(); |
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535 case 2: return new MinimumCodeSizeBasedInliningDecision(); |
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536 case 3: return new DynamicSizeBasedInliningDecision(); |
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537 case 4: return new GreedySizeBasedInliningDecision(); |
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538 case 5: return new GreedyMachineCodeInliningDecision(); |
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539 default: |
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540 GraalInternalError.shouldNotReachHere(); |
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541 return null; |
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542 } |
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543 } |
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544 |
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545 private static WeightComputationPolicy createWeightComputationPolicy() { |
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546 switch(GraalOptions.WeightComputationPolicy) { |
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547 case 0: throw new GraalInternalError("removed because of invokation counter changes"); |
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548 case 1: return new BytecodeSizeBasedWeightComputationPolicy(); |
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549 case 2: return new ComplexityBasedWeightComputationPolicy(); |
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550 case 3: return new CompiledCodeSizeWeightComputationPolicy(); |
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551 default: |
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552 GraalInternalError.shouldNotReachHere(); |
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553 return null; |
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554 } |
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555 } |
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556 } |