Enable optimizing JSFunctions that are in new-space....

src/heap.cc

Index: src/heap.cc
===================================================================
--- src/heap.cc	(revision 6981)
+++ src/heap.cc	(working copy)
@@ -844,8 +844,6 @@
   ContextSlotCache::Clear();
   DescriptorLookupCache::Clear();
 
-  RuntimeProfiler::MarkCompactPrologue(is_compacting);
-
   CompilationCache::MarkCompactPrologue();
 
   CompletelyClearInstanceofCache();
@@ -1056,14 +1054,6 @@
   // Scavenge object reachable from the global contexts list directly.
   scavenge_visitor.VisitPointer(BitCast<Object**>(&global_contexts_list_));
 
-  // Scavenge objects reachable from the runtime-profiler sampler
-  // window directly.
-  Object** sampler_window_address = RuntimeProfiler::SamplerWindowAddress();
-  int sampler_window_size = RuntimeProfiler::SamplerWindowSize();
-  scavenge_visitor.VisitPointers(
-      sampler_window_address,
-      sampler_window_address + sampler_window_size);
-
   new_space_front = DoScavenge(&scavenge_visitor, new_space_front);
 
   UpdateNewSpaceReferencesInExternalStringTable(
@@ -1080,6 +1070,9 @@
   IncrementYoungSurvivorsCounter(static_cast<int>(
       (PromotedSpaceSize() - survived_watermark) + new_space_.Size()));
 

[Vyacheslav Egorov (Chromium), 2011/03/01 17:18:44]

You can move it up and place it near
LiveObjectList::UpdateReferencesForScavengeGC to make code more logically
compact.

+  // Update JSFunction pointers from the runtime profiler.
+  RuntimeProfiler::UpdateSamplesAfterScavenge();
+
   LOG(ResourceEvent("scavenge", "end"));
 
   gc_state_ = NOT_IN_GC;