Examples of com.google.gwt.dev.jjs.impl.OptimizerStats

com.google.gwt.dev.jjs.impl.OptimizerStats
Stores statistics on the results of running an optimizer pass.


    // Recompute clinits each time, they can become empty.
    jprogram.typeOracle.recomputeAfterOptimizations();
    // jprogram.methodOracle =
    // MethodOracleBuilder.buildMethodOracle(jprogram);
    OptimizerStats stats = new OptimizerStats(passName);


    // Remove unreferenced types, fields, methods, [params, locals]
    stats.add(Pruner.exec(jprogram, true).recordVisits(numNodes));


    // finalize locals, params, fields, methods, classes
    stats.add(Finalizer.exec(jprogram).recordVisits(numNodes));


    // rewrite non-polymorphic calls as static calls; update all call sites
    stats.add(MakeCallsStatic.exec(jprogram).recordVisits(numNodes));


    // type flow tightening
    // - fields, locals based on assignment
    // - params based on assignment and call sites
    // - method bodies based on return statements
    // - polymorphic methods based on return types of all implementors
    // - optimize casts and instance of
    stats.add(TypeTightener.exec(jprogram).recordVisits(numNodes));


    // tighten method call bindings
    stats.add(MethodCallTightener.exec(jprogram).recordVisits(numNodes));


    // dead code removal??
    stats.add(DeadCodeElimination.exec(jprogram).recordVisits(numNodes));


    // inlining
    stats.add(MethodInliner.exec(jprogram).recordVisits(numNodes));


    if (isAggressivelyOptimize) {
      // remove same parameters value
      stats.add(SameParameterValueOptimizer.exec(jprogram).recordVisits(
          numNodes));


      /*
       * Enum ordinalization.
       * 
       * TODO(jbrosenberg): graduate this out of the 'isAggressivelyOptimize'
       * block, over time.
       */
      stats.add(EnumOrdinalizer.exec(jprogram).recordVisits(numNodes));
    }


    // prove that any types that have been culled from the main tree are
    // unreferenced due to type tightening?

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  }


  public static OptimizerStats exec(JsProgram program) {
    Event optimizeJsEvent = SpeedTracerLogger.start(
        CompilerEventType.OPTIMIZE_JS, "optimizer", NAME);
    OptimizerStats stats = new JsUnusedFunctionRemover(program).execImpl();
    optimizeJsEvent.end("didChange", "" + stats.didChange());
    return stats;
  }

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  public JsUnusedFunctionRemover(JsProgram program) {
    this.program = program;
  }


  public OptimizerStats execImpl() {
    OptimizerStats stats = new OptimizerStats(NAME);


    // Find all functions
    (new JsFunctionVisitor()).accept(program);


    // Remove the functions that are referenced from the hit list
    (new JsNameRefVisitor()).accept(program);


    // Remove the unused functions from the JsProgram
    RemovalVisitor removalVisitor = new RemovalVisitor();
    removalVisitor.accept(program);


    if (removalVisitor.didChange()) {
      stats.recordModified();
    }
    return stats;
  }

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   * Static entry point used by JavaToJavaScriptCompiler.
   */
  public static OptimizerStats exec(JsProgram program, Collection<JsNode> toInline) {
    Event optimizeJsEvent = SpeedTracerLogger.start(
        CompilerEventType.OPTIMIZE_JS, "optimizer", NAME);
    OptimizerStats stats = execImpl(program, toInline);
    optimizeJsEvent.end("didChange", "" + stats.didChange());
    return stats;
  }

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    return v.containsNestedFunctions();
  }




  private static OptimizerStats execImpl(JsProgram program, Collection<JsNode> toInline) {
    OptimizerStats stats = new OptimizerStats(NAME);


    // We are not covering the whole AST, hence we will try to inline functions with a single call
    // site as well as those produced by native methods and their callers.
    SingleInvocationVisitor s = new SingleInvocationVisitor();
    s.accept(program);
    Set<JsNode> candidates = new LinkedHashSet<JsNode>(toInline);
    candidates.addAll(s.inliningCandidates());


    RedefinedFunctionCollector d = new RedefinedFunctionCollector();
    d.accept(program);


    RecursionCollector rc = new RecursionCollector();
    for (JsNode fn : candidates) {
      rc.accept(fn);
    }


    InliningVisitor v = new InliningVisitor(program, candidates);
    v.blacklist(d.getRedefined());
    v.blacklist(rc.getRecursive());
    // Do not accept among candidates as the list might get stale and contain nodes that are not
    // reachable from the AST. Instead filter within InliningVisitor.
    v.accept(program);


    if (v.didChange()) {
      stats.recordModified();
    }


    DuplicateXORemover r = new DuplicateXORemover(program);
    r.accept(program);
    if (r.didChange()) {
      stats.recordModified();
    }
    return stats;
  }

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      if (Thread.interrupted()) {
        optimizeEvent.end();
        throw new InterruptedException();
      }
      AstDumper.maybeDumpAST(jprogram);
      OptimizerStats stats = optimizeJavaOneTime("Pass " + passCount, nodeCount);
      allOptimizerStats.add(stats);
      lastNodeCount = nodeCount;
      nodeCount = jprogram.getNodeCount();


      float nodeChangeRate = stats.getNumMods() / (float) lastNodeCount;
      float sizeChangeRate = (lastNodeCount - nodeCount) / (float) lastNodeCount;
      if (nodeChangeRate <= minChangeRate && sizeChangeRate <= minChangeRate) {
        break;
      }
    }

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  private OptimizerStats optimizeJavaOneTime(String passName, int numNodes) {
    Event optimizeEvent = SpeedTracerLogger.start(CompilerEventType.OPTIMIZE, "phase", "loop");
    // Clinits might have become empty become empty.
    jprogram.typeOracle.recomputeAfterOptimizations();
    OptimizerStats stats = new OptimizerStats(passName);
    stats.add(Pruner.exec(jprogram, true).recordVisits(numNodes));
    stats.add(Finalizer.exec(jprogram).recordVisits(numNodes));
    stats.add(MakeCallsStatic.exec(options, jprogram).recordVisits(numNodes));
    stats.add(TypeTightener.exec(jprogram).recordVisits(numNodes));
    stats.add(MethodCallTightener.exec(jprogram).recordVisits(numNodes));
    stats.add(MethodCallSpecializer.exec(jprogram).recordVisits(numNodes));
    stats.add(DeadCodeElimination.exec(jprogram).recordVisits(numNodes));
    stats.add(MethodInliner.exec(jprogram).recordVisits(numNodes));
    if (options.shouldInlineLiteralParameters()) {
      stats.add(SameParameterValueOptimizer.exec(jprogram).recordVisits(numNodes));
    }
    if (options.shouldOrdinalizeEnums()) {
      stats.add(EnumOrdinalizer.exec(jprogram).recordVisits(numNodes));
    }
    optimizeEvent.end();
    return stats;
  }

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        if (Thread.interrupted()) {
          throw new InterruptedException();
        }
        Event optimizeJsEvent = SpeedTracerLogger.start(CompilerEventType.OPTIMIZE_JS);


        OptimizerStats stats = new OptimizerStats("Pass " + counter);


        // Remove unused functions if possible.
        stats.add(JsStaticEval.exec(jsProgram));
        // Inline Js function invocations
        stats.add(JsInliner.exec(jsProgram, toInline));
        // Remove unused functions if possible.
        stats.add(JsUnusedFunctionRemover.exec(jsProgram));


        // Save the stats to print out after optimizers finish.
        allOptimizerStats.add(stats);


        optimizeJsEvent.end();
        int optimizationLevel = options.getOptimizationLevel();
        if ((optimizationLevel < OptionOptimize.OPTIMIZE_LEVEL_MAX && counter > optimizationLevel)
            || !stats.didChange()) {
          break;
        }
      }


      printJsOptimizeTrace(allOptimizerStats);

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com.google.gwt.dev.jjs.impl.gflow.DataflowOptimizer

com.google.gwt.dev.jjs.JavaToJavaScriptCompiler

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