Reland of Remove slots that point to unboxed doubles from the StoreBuffer/SlotsBuffer.

src/heap/store-buffer.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_STORE_BUFFER_H_
 #define V8_STORE_BUFFER_H_
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
 #include "src/base/platform/platform.h"
@@ skipping 89 matching lines @@
 
   void Filter(int flag);
 
   // Eliminates all stale store buffer entries from the store buffer, i.e.,
   // slots that are not part of live objects anymore. This method must be
   // called after marking, when the whole transitive closure is known and
   // must be called before sweeping when mark bits are still intact.
   void ClearInvalidStoreBufferEntries();
   void VerifyValidStoreBufferEntries();
 
+  // Removes all the slots in [start_address, end_address) range from the store
+  // buffer.
+  void RemoveSlots(Address start_address, Address end_address);
+
  private:
   Heap* heap_;
 
   // The store buffer is divided up into a new buffer that is constantly being
   // filled by mutator activity and an old buffer that is filled with the data
   // from the new buffer after compression.
   Address* start_;
   Address* limit_;
 
   Address* old_start_;
@@ skipping 90 matching lines @@
   }
 
  private:
   StoreBuffer* store_buffer_;
   bool stored_state_;
 };
 }
 }  // namespace v8::internal
 
 #endif  // V8_STORE_BUFFER_H_