Fix slot recording of code target patches.

src/mark-compact.cc

 // Copyright 2012 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 4061 matching lines @@
                             target_page->slots_buffer_address(),
                             SlotsBuffer::CODE_ENTRY_SLOT,
                             slot,
                             SlotsBuffer::FAIL_ON_OVERFLOW)) {
       EvictEvacuationCandidate(target_page);
     }
   }
 }
 
 
+void MarkCompactCollector::RecordCodeTargetPatch(Address pc, Code* target) {
+  ASSERT(heap()->gc_state() == Heap::MARK_COMPACT);
+  if(is_compacting()) {
+    Code* host = heap()->isolate()->inner_pointer_to_code_cache()->
+        GcSafeFindCodeForInnerPointer(pc);
+    MarkBit mark_bit = Marking::MarkBitFrom(host);
+    if (Marking::IsBlack(mark_bit)) {
+      RelocInfo rinfo(pc, RelocInfo::CODE_TARGET, 0, host);
+      RecordRelocSlot(&rinfo, target);
+    }
+  }
+}
+
+
 static inline SlotsBuffer::SlotType DecodeSlotType(
     SlotsBuffer::ObjectSlot slot) {
   return static_cast<SlotsBuffer::SlotType>(reinterpret_cast<intptr_t>(slot));
 }
 
 
 void SlotsBuffer::UpdateSlots(Heap* heap) {
   PointersUpdatingVisitor v(heap);
 
   for (int slot_idx = 0; slot_idx < idx_; ++slot_idx) {
@@ skipping 49 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal