Scale invocation count by the number of BBs in the flow-graph of a method.

runtime/vm/code_generator.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/code_generator.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/bigint_operations.h"
 #include "vm/code_patcher.h"
@@ skipping 17 matching lines @@
 
 namespace dart {
 
 DEFINE_FLAG(bool, deoptimize_alot, false,
     "Deoptimizes all live frames when we are about to return to Dart code from"
     " native entries.");
 DEFINE_FLAG(int, max_subtype_cache_entries, 100,
     "Maximum number of subtype cache entries (number of checks cached).");
 DEFINE_FLAG(int, optimization_counter_threshold, 30000,
     "Function's usage-counter value before it is optimized, -1 means never");
+DEFINE_FLAG(int, optimization_counter_scale, 2000,

[kasperl, 2014/08/29 10:52:26]

2269

+    "The scale of invocation count, by size of the function.");
+DEFINE_FLAG(int, min_optimization_counter_threshold, 5000,

[Vyacheslav Egorov (Google), 2014/08/29 11:17:18]

Just move these flags to the file where they are used from, intead of defining
them here and declaring them there.

[Anders Johnsen, 2014/08/29 11:56:27]

Done.

+    "The minimum invocation count for a function.");
 DEFINE_FLAG(charp, optimization_filter, NULL, "Optimize only named function");
 DEFINE_FLAG(int, reoptimization_counter_threshold, 4000,
     "Counter threshold before a function gets reoptimized.");
 DEFINE_FLAG(bool, stop_on_excessive_deoptimization, false,
     "Debugging: stops program if deoptimizing same function too often");
 DEFINE_FLAG(bool, trace_deoptimization, false, "Trace deoptimization");
 DEFINE_FLAG(bool, trace_deoptimization_verbose, false,
     "Trace deoptimization verbose");
 DEFINE_FLAG(bool, trace_failed_optimization_attempts, false,
     "Traces all failed optimization attempts");
@@ skipping 1536 matching lines @@
   field.RecordStore(value);
 }
 
 
 DEFINE_RUNTIME_ENTRY(InitStaticField, 1) {
   const Field& field = Field::CheckedHandle(arguments.ArgAt(0));
   field.EvaluateInitializer();
 }
 
 }  // namespace dart