Clear the compilation cache just before starting to do mark-sweep...

bleeding_edge/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 2883 matching lines @@
     number_idle_notifications = 0;
     last_gc_count = gc_count_;
   }
 
   if (number_idle_notifications == kIdlesBeforeScavenge) {
     CollectGarbage(0, NEW_SPACE);
     new_space_.Shrink();
     last_gc_count = gc_count_;
 
   } else if (number_idle_notifications == kIdlesBeforeMarkSweep) {
+    // Before doing the mark-sweep collections we clear the
+    // compilation cache to avoid hanging on to source code and
+    // generated code for cached functions.
+    CompilationCache::Clear();
+
     CollectAllGarbage(false);
     new_space_.Shrink();
     last_gc_count = gc_count_;
 
   } else if (number_idle_notifications == kIdlesBeforeMarkCompact) {
     CollectAllGarbage(true);
     new_space_.Shrink();
     last_gc_count = gc_count_;
     number_idle_notifications = 0;
     finished = true;
@@ skipping 1037 matching lines @@
   for (int i = 0; i < kNumberOfCaches; i++) {
     if (caches_[i] != NULL) {
       delete caches_[i];
       caches_[i] = NULL;
     }
   }
 }
 
 
 } }  // namespace v8::internal