Trace through const objects instead of spying on flow graph construction to find closure functions.…

runtime/vm/flow_graph_compiler.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/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 52 matching lines @@
 DECLARE_FLAG(bool, propagate_ic_data);
 DECLARE_FLAG(int, regexp_optimization_counter_threshold);
 DECLARE_FLAG(int, reoptimization_counter_threshold);
 DECLARE_FLAG(int, stacktrace_every);
 DECLARE_FLAG(charp, stacktrace_filter);
 DECLARE_FLAG(bool, support_debugger);
 DECLARE_FLAG(bool, use_field_guards);
 DECLARE_FLAG(bool, use_cha_deopt);
 DECLARE_FLAG(bool, use_osr);
 DECLARE_FLAG(bool, warn_on_javascript_compatibility);
-DECLARE_FLAG(bool, precompile_collect_closures);
 DECLARE_FLAG(bool, print_stop_message);
 DECLARE_FLAG(bool, lazy_dispatchers);
 DECLARE_FLAG(bool, interpret_irregexp);
 DECLARE_FLAG(bool, enable_mirrors);
 DECLARE_FLAG(bool, link_natives_lazily);
 
 static void PrecompilationModeHandler(bool value) {
   if (value) {
 #if defined(TARGET_ARCH_IA32)
     FATAL("Precompilation not supported on IA32");
@@ skipping 20 matching lines @@
     // TODO(srdjan): Enable CHA deoptimization when eager class finalization is
     // implemented, either with precompilation or as a special pass.
     FLAG_use_cha_deopt = false;
     // Calling the PrintStopMessage stub is not supported in precompiled code
     // since it is done at places where no pool pointer is loaded.
     FLAG_print_stop_message = false;
 
     FLAG_lazy_dispatchers = false;
     FLAG_interpret_irregexp = true;
     FLAG_enable_mirrors = false;
-    FLAG_precompile_collect_closures = true;
     FLAG_link_natives_lazily = true;
     FLAG_fields_may_be_reset = true;
     FLAG_allow_absolute_addresses = false;
 
     // Background compilation relies on two-stage compilation pipeline,
     // while precompilation has only one.
     FLAG_background_compilation = false;
   }
 }
 
@@ skipping 1717 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif
 
 
 }  // namespace dart