Try enabling (non-incremental) code compaction again.

This time include slot-recording fixes in code flushing that were accidentally omitted from the previous commit.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9348018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/flag-definitions.h

@@ -307,7 +307,7 @@ DEFINE_bool(cleanup_caches_in_maps_at_gc, true,
             "Flush code caches in maps during mark compact cycle.")
 DEFINE_bool(never_compact, false,
             "Never perform compaction on full GC - testing only")
-DEFINE_bool(compact_code_space, false,
+DEFINE_bool(compact_code_space, true,
             "Compact code space on full non-incremental collections")
 DEFINE_bool(cleanup_code_caches_at_gc, true,
             "Flush inline caches prior to mark compact collection and "

src/mark-compact.cc

@@ -809,6 +809,8 @@ class CodeFlusher {
       isolate_->heap()->mark_compact_collector()->
           RecordCodeEntrySlot(slot, target);
 
+      RecordSharedFunctionInfoCodeSlot(shared);
+
       candidate = next_candidate;
     }
 
@@ -831,12 +833,21 @@ class CodeFlusher {
         candidate->set_code(lazy_compile);
       }
 
+      RecordSharedFunctionInfoCodeSlot(candidate);
+
       candidate = next_candidate;
     }
 
     shared_function_info_candidates_head_ = NULL;
   }
 
+  void RecordSharedFunctionInfoCodeSlot(SharedFunctionInfo* shared) {
+    Object** slot = HeapObject::RawField(shared,
+                                         SharedFunctionInfo::kCodeOffset);
+    isolate_->heap()->mark_compact_collector()->
+        RecordSlot(slot, slot, HeapObject::cast(*slot));
+  }
+
   static JSFunction** GetNextCandidateField(JSFunction* candidate) {
     return reinterpret_cast<JSFunction**>(
         candidate->address() + JSFunction::kCodeEntryOffset);