Fix invariant so that we cannot record relocation slots for

src/incremental-marking.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 49 matching lines @@
 
 
 void IncrementalMarking::TearDown() {
   delete marking_deque_memory_;
 }
 
 
 void IncrementalMarking::RecordWriteSlow(HeapObject* obj,
                                          Object** slot,
                                          Object* value) {
-  if (BaseRecordWrite(obj, slot, value) && is_compacting_ && slot != NULL) {
+  if (BaseRecordWrite(obj, slot, value) && slot != NULL) {
     MarkBit obj_bit = Marking::MarkBitFrom(obj);
     if (Marking::IsBlack(obj_bit)) {
       // Object is not going to be rescanned we need to record the slot.
       heap_->mark_compact_collector()->RecordSlot(
           HeapObject::RawField(obj, 0), slot, value);
     }
   }
 }
 
 
@@ skipping 39 matching lines @@
   if (IsMarking()) {
     Code* host = heap_->isolate()->inner_pointer_to_code_cache()->
         GcSafeFindCodeForInnerPointer(pc);
     RelocInfo rinfo(pc, RelocInfo::CODE_TARGET, 0, host);
     RecordWriteIntoCode(host, &rinfo, value);
   }
 }
 
 
 void IncrementalMarking::RecordWriteOfCodeEntrySlow(JSFunction* host,
-                                                Object** slot,
-                                                Code* value) {
-  if (BaseRecordWrite(host, slot, value) && is_compacting_) {
+                                                    Object** slot,
+                                                    Code* value) {
+  if (BaseRecordWrite(host, slot, value)) {
     ASSERT(slot != NULL);
     heap_->mark_compact_collector()->
         RecordCodeEntrySlot(reinterpret_cast<Address>(slot), value);
   }
 }
 
 
 void IncrementalMarking::RecordWriteIntoCodeSlow(HeapObject* obj,
                                                  RelocInfo* rinfo,
                                                  Object* value) {
@@ skipping 801 matching lines @@
   allocation_marking_factor_ = kInitialAllocationMarkingFactor;
   bytes_scanned_ = 0;
 }
 
 
 int64_t IncrementalMarking::SpaceLeftInOldSpace() {
   return heap_->MaxOldGenerationSize() - heap_->PromotedSpaceSizeOfObjects();
 }
 
 } }  // namespace v8::internal