Output time spent in code flushing in GC NVP trace.

src/heap.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 620 matching lines @@
     }
   }
 
   EnsureFromSpaceIsCommitted();
 
   int start_new_space_size = Heap::new_space()->Size();
 
   if (collector == MARK_COMPACTOR) {
     if (FLAG_flush_code) {
       // Flush all potentially unused code.
+      GCTracer::Scope gc_scope(tracer, GCTracer::Scope::MC_FLUSH_CODE);
       FlushCode();
     }
 
     // Perform mark-sweep with optional compaction.
     MarkCompact(tracer);
 
     bool high_survival_rate_during_scavenges = IsHighSurvivalRate() &&
         IsStableOrIncreasingSurvivalTrend();
 
     UpdateSurvivalRateTrend(start_new_space_size);
@@ skipping 4183 matching lines @@
         break;
       default:
         UNREACHABLE();
     }
     PrintF(" ");
 
     PrintF("external=%d ", static_cast<int>(scopes_[Scope::EXTERNAL]));
     PrintF("mark=%d ", static_cast<int>(scopes_[Scope::MC_MARK]));
     PrintF("sweep=%d ", static_cast<int>(scopes_[Scope::MC_SWEEP]));
     PrintF("compact=%d ", static_cast<int>(scopes_[Scope::MC_COMPACT]));
+    PrintF("flushcode=%d ", static_cast<int>(scopes_[Scope::MC_FLUSH_CODE]));
 
     PrintF("total_size_before=%d ", start_size_);
     PrintF("total_size_after=%d ", Heap::SizeOfObjects());
     PrintF("holes_size_before=%d ", in_free_list_or_wasted_before_gc_);
     PrintF("holes_size_after=%d ", CountTotalHolesSize());
 
     PrintF("allocated=%d ", allocated_since_last_gc_);
     PrintF("promoted=%d ", promoted_objects_size_);
 
     PrintF("\n");
@@ skipping 129 matching lines @@
 void ExternalStringTable::TearDown() {
   new_space_strings_.Free();
   old_space_strings_.Free();
 }
 
 
 List<Object*> ExternalStringTable::new_space_strings_;
 List<Object*> ExternalStringTable::old_space_strings_;
 
 } }  // namespace v8::internal