Merge bleeding edge up to 8774 into the GC branch.

src/heap-inl.h

 // Copyright 2011 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 135 matching lines @@
          str.start(), str.length() * kUC16Size);
 
   return answer;
 }
 
 MaybeObject* Heap::CopyFixedArray(FixedArray* src) {
   return CopyFixedArrayWithMap(src, src->map());
 }
 
 
+MaybeObject* Heap::CopyFixedDoubleArray(FixedDoubleArray* src) {
+  return CopyFixedDoubleArrayWithMap(src, src->map());
+}
+
+
 MaybeObject* Heap::AllocateRaw(int size_in_bytes,
                                AllocationSpace space,
                                AllocationSpace retry_space) {
   ASSERT(allocation_allowed_ && gc_state_ == NOT_IN_GC);
   ASSERT(space != NEW_SPACE ||
          retry_space == OLD_POINTER_SPACE ||
          retry_space == OLD_DATA_SPACE ||
          retry_space == LO_SPACE);
 #ifdef DEBUG
   if (FLAG_gc_interval >= 0 &&
@@ skipping 195 matching lines @@
             reinterpret_cast<Object**>(src),
             byte_size / kPointerSize);
 }
 
 
 void Heap::MoveBlock(Address dst, Address src, int byte_size) {
   ASSERT(IsAligned(byte_size, kPointerSize));
 
   int size_in_words = byte_size / kPointerSize;
 
-  if ((dst < src) || (dst >= (src + size_in_words))) {
-    ASSERT((dst >= (src + size_in_words)) ||
-           ((OffsetFrom(reinterpret_cast<Address>(src)) -
-             OffsetFrom(reinterpret_cast<Address>(dst))) >= kPointerSize));
-
+  if ((dst < src) || (dst >= (src + byte_size))) {
     Object** src_slot = reinterpret_cast<Object**>(src);
     Object** dst_slot = reinterpret_cast<Object**>(dst);
     Object** end_slot = src_slot + size_in_words;
 
     while (src_slot != end_slot) {
       *dst_slot++ = *src_slot++;
     }
   } else {
     memmove(dst, src, byte_size);
   }
@@ skipping 290 matching lines @@
 
 
 Heap* _inline_get_heap_() {
   return HEAP;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_INL_H_