Non-tree-shaking --precompile.

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 48 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);
 
 
 static void NooptModeHandler(bool value) {
   if (value) {
     FLAG_always_megamorphic_calls = true;
     FLAG_polymorphic_with_deopt = false;
     FLAG_optimization_counter_threshold = -1;
     FLAG_use_field_guards = false;
     FLAG_use_osr = false;
     FLAG_emit_edge_counters = false;
@@ skipping 28 matching lines @@
 DECLARE_FLAG(bool, interpret_irregexp);
 DECLARE_FLAG(bool, enable_mirrors);
 
 
 static void PrecompileModeHandler(bool value) {
   if (value) {
     NooptModeHandler(true);
     FLAG_lazy_dispatchers = false;
     FLAG_interpret_irregexp = true;
     FLAG_enable_mirrors = false;
+    FLAG_precompile_collect_closures = true;
   }
 }
 
 
 DEFINE_FLAG_HANDLER(PrecompileModeHandler,
                     precompile,
                     "Precompilation mode");
 
 
 // Assign locations to incoming arguments, i.e., values pushed above spill slots
@@ skipping 1672 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif
 
 
 }  // namespace dart