Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/phases/InliningPhase.java @ 4356:249752adcb8d
Rename Timer DebugTimer and Metric DebugMetric.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 18 Jan 2012 13:54:40 +0100 |
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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.max.graal.compiler.phases; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.oracle.max.cri.ci.*; |
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28 import com.oracle.max.cri.ri.*; |
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29 import com.oracle.max.criutils.*; |
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30 import com.oracle.max.graal.compiler.*; |
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31 import com.oracle.max.graal.compiler.phases.PhasePlan.PhasePosition; |
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32 import com.oracle.max.graal.compiler.util.*; |
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33 import com.oracle.max.graal.compiler.util.InliningUtil.InlineInfo; |
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34 import com.oracle.max.graal.compiler.util.InliningUtil.InliningCallback; |
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35 import com.oracle.max.graal.cri.*; |
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36 import com.oracle.max.graal.debug.*; |
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37 import com.oracle.max.graal.graph.*; |
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38 import com.oracle.max.graal.nodes.*; |
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39 |
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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 CiTarget target; |
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49 private final GraalRuntime runtime; |
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50 |
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51 private final Collection<Invoke> hints; |
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52 |
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53 private final PriorityQueue<InlineInfo> inlineCandidates = new PriorityQueue<>(); |
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54 private CiAssumptions assumptions; |
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55 |
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56 private final PhasePlan plan; |
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57 |
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58 // Metrics |
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59 private static final DebugMetric metricInliningPerformed = Debug.metric("InliningPerformed"); |
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60 private static final DebugMetric metricInliningConsidered = Debug.metric("InliningConsidered"); |
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61 |
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62 public InliningPhase(CiTarget target, GraalRuntime runtime, Collection<Invoke> hints, CiAssumptions assumptions, PhasePlan plan) { |
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63 this.target = target; |
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64 this.runtime = runtime; |
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65 this.hints = hints; |
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66 this.assumptions = assumptions; |
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67 this.plan = plan; |
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68 } |
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69 |
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70 @SuppressWarnings("unchecked") |
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71 @Override |
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72 protected void run(StructuredGraph graph) { |
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73 graph.createNodeMap(); |
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74 |
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75 if (hints != null) { |
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76 scanInvokes((Iterable<? extends Node>) Util.uncheckedCast(this.hints), 0, graph); |
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77 } else { |
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78 scanInvokes(graph.getNodes(InvokeNode.class), 0, graph); |
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79 scanInvokes(graph.getNodes(InvokeWithExceptionNode.class), 0, graph); |
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80 } |
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81 |
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82 while (!inlineCandidates.isEmpty() && graph.getNodeCount() < GraalOptions.MaximumDesiredSize) { |
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83 InlineInfo info = inlineCandidates.remove(); |
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84 double penalty = Math.pow(GraalOptions.InliningSizePenaltyExp, graph.getNodeCount() / (double) GraalOptions.MaximumDesiredSize) / GraalOptions.InliningSizePenaltyExp; |
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85 if (info.weight > GraalOptions.MaximumInlineWeight / (1 + penalty * GraalOptions.InliningSizePenalty)) { |
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86 if (GraalOptions.TraceInlining) { |
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87 TTY.println("not inlining (cut off by weight):"); |
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88 while (info != null) { |
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89 TTY.println(" %f %s", info.weight, info); |
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90 info = inlineCandidates.poll(); |
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91 } |
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92 } |
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93 return; |
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94 } |
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95 Iterable<Node> newNodes = null; |
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96 if (info.invoke.node().isAlive()) { |
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97 try { |
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98 info.inline(graph, runtime, this); |
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99 if (GraalOptions.TraceInlining) { |
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100 TTY.println("inlining %f: %s", info.weight, info); |
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101 } |
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102 Debug.dump(graph, "after inlining %s", info); |
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103 // get the new nodes here, the canonicalizer phase will reset the mark |
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104 newNodes = graph.getNewNodes(); |
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105 if (GraalOptions.OptCanonicalizer) { |
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106 new CanonicalizerPhase(target, runtime, true, assumptions).apply(graph); |
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107 } |
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108 if (GraalOptions.Intrinsify) { |
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109 new IntrinsificationPhase(runtime).apply(graph); |
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110 } |
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111 metricInliningPerformed.increment(); |
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112 } catch (CiBailout bailout) { |
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113 // TODO determine if we should really bail out of the whole compilation. |
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114 throw bailout; |
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115 } catch (AssertionError e) { |
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116 throw new GraalInternalError(e).addContext(info.toString()); |
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117 } catch (RuntimeException e) { |
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118 throw new GraalInternalError(e).addContext(info.toString()); |
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119 } catch (GraalInternalError e) { |
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120 throw e.addContext(info.toString()); |
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121 } |
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122 } |
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123 if (newNodes != null && info.level <= GraalOptions.MaximumInlineLevel) { |
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124 scanInvokes(newNodes, info.level + 1, graph); |
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125 } |
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126 } |
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127 } |
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128 |
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129 private void scanInvokes(Iterable<? extends Node> newNodes, int level, StructuredGraph graph) { |
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130 graph.mark(); |
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131 for (Node node : newNodes) { |
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132 if (node != null) { |
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133 if (node instanceof Invoke) { |
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134 Invoke invoke = (Invoke) node; |
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135 scanInvoke(invoke, level); |
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136 } |
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137 for (Node usage : node.usages().snapshot()) { |
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138 if (usage instanceof Invoke) { |
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139 Invoke invoke = (Invoke) usage; |
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140 scanInvoke(invoke, level); |
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141 } |
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142 } |
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143 } |
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144 } |
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145 } |
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146 |
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147 private void scanInvoke(Invoke invoke, int level) { |
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148 InlineInfo info = InliningUtil.getInlineInfo(invoke, level, runtime, assumptions, this); |
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149 if (info != null) { |
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150 metricInliningConsidered.increment(); |
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151 inlineCandidates.add(info); |
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152 } |
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153 } |
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154 |
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155 public static final Map<RiMethod, Integer> parsedMethods = new HashMap<>(); |
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156 |
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157 @Override |
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158 public StructuredGraph buildGraph(RiResolvedMethod method) { |
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159 StructuredGraph newGraph = new StructuredGraph(method); |
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160 |
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161 if (plan != null) { |
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162 plan.runPhases(PhasePosition.AFTER_PARSING, newGraph); |
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163 } |
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164 |
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165 if (GraalOptions.ProbabilityAnalysis) { |
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166 new DeadCodeEliminationPhase().apply(newGraph); |
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167 new ComputeProbabilityPhase().apply(newGraph); |
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168 } |
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169 new CanonicalizerPhase(target, runtime, assumptions).apply(newGraph); |
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170 return newGraph; |
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171 } |
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172 |
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173 @Override |
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174 public double inliningWeight(RiResolvedMethod caller, RiResolvedMethod method, Invoke invoke) { |
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175 double ratio; |
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176 if (hints != null && hints.contains(invoke)) { |
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177 ratio = 1000000; |
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178 } else { |
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179 if (GraalOptions.ProbabilityAnalysis) { |
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180 ratio = invoke.node().probability(); |
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181 } else { |
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182 RiTypeProfile profile = caller.typeProfile(invoke.bci()); |
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183 if (profile != null && profile.count > 0) { |
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184 RiResolvedMethod parent = invoke.stateAfter().method(); |
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185 ratio = profile.count / (float) parent.invocationCount(); |
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186 } else { |
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187 ratio = 1; |
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188 } |
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189 } |
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190 } |
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191 |
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192 final double normalSize; |
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193 // TODO(ls) get rid of this magic, it's here to emulate the old behavior for the time being |
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194 if (ratio < 0.01) { |
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195 ratio = 0.01; |
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|
196 } |
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197 if (ratio < 0.5) { |
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198 normalSize = 10 * ratio / 0.5; |
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199 } else if (ratio < 2) { |
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200 normalSize = 10 + (35 - 10) * (ratio - 0.5) / 1.5; |
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201 } else if (ratio < 20) { |
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|
202 normalSize = 35; |
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|
203 } else if (ratio < 40) { |
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204 normalSize = 35 + (350 - 35) * (ratio - 20) / 20; |
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|
205 } else { |
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|
206 normalSize = 350; |
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|
207 } |
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|
208 |
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|
209 int count; |
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210 if (GraalOptions.ParseBeforeInlining) { |
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211 if (!parsedMethods.containsKey(method)) { |
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|
212 StructuredGraph newGraph = new StructuredGraph(method); |
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213 if (plan != null) { |
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|
214 plan.runPhases(PhasePosition.AFTER_PARSING, newGraph); |
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215 } |
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|
216 new CanonicalizerPhase(target, runtime, assumptions).apply(newGraph); |
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217 count = graphComplexity(newGraph); |
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218 parsedMethods.put(method, count); |
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219 } else { |
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|
220 count = parsedMethods.get(method); |
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|
221 } |
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|
222 } else { |
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|
223 count = method.codeSize(); |
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|
224 } |
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|
225 |
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|
226 return count / normalSize; |
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|
227 } |
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|
228 |
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|
229 |
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|
230 public static int graphComplexity(StructuredGraph graph) { |
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|
231 int result = 0; |
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|
232 for (Node node : graph.getNodes()) { |
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|
233 if (node instanceof ConstantNode || node instanceof LocalNode || node instanceof BeginNode || node instanceof ReturnNode || node instanceof UnwindNode) { |
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|
234 result += 0; |
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|
235 } else if (node instanceof PhiNode) { |
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|
236 result += 5; |
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|
237 } else if (node instanceof MergeNode || node instanceof Invoke || node instanceof LoopEndNode || node instanceof EndNode) { |
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|
238 result += 0; |
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|
239 } else if (node instanceof ControlSplitNode) { |
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|
240 result += ((ControlSplitNode) node).blockSuccessorCount(); |
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241 } else { |
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242 result += 1; |
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243 } |
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244 } |
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245 return Math.max(1, result); |
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246 } |
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247 |
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248 |
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249 @Override |
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250 public void recordConcreteMethodAssumption(RiResolvedMethod method, RiResolvedType context, RiResolvedMethod impl) { |
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251 assumptions.recordConcreteMethod(method, context, impl); |
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252 } |
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253 |
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254 } |