- Pushed source code for functions into old space....

src/heap.cc

 // Copyright 2009 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 1994 matching lines @@
   cons_string->set_length(length);
   cons_string->set_hash_field(String::kEmptyHashField);
   cons_string->set_first(first, mode);
   cons_string->set_second(second, mode);
   return result;
 }
 
 
 Object* Heap::AllocateSubString(String* buffer,
                                 int start,
-                                int end) {
+                                int end,
+                                PretenureFlag pretenure) {
   int length = end - start;
 
   if (length == 1) {
     return Heap::LookupSingleCharacterStringFromCode(
         buffer->Get(start));
   } else if (length == 2) {
     // Optimization for 2-byte strings often used as keys in a decompression
     // dictionary.  Check whether we already have the string in the symbol
     // table to prevent creation of many unneccesary strings.
     unsigned c1 = buffer->Get(start);
     unsigned c2 = buffer->Get(start + 1);
     return MakeOrFindTwoCharacterString(c1, c2);
   }
 
   // Make an attempt to flatten the buffer to reduce access time.
-  if (!buffer->IsFlat()) {
-    buffer->TryFlatten();
-  }
+  buffer->TryFlatten();
 
   Object* result = buffer->IsAsciiRepresentation()
-      ? AllocateRawAsciiString(length)
-      : AllocateRawTwoByteString(length);
+      ? AllocateRawAsciiString(length, pretenure )
+      : AllocateRawTwoByteString(length, pretenure);
   if (result->IsFailure()) return result;
   String* string_result = String::cast(result);
-
   // Copy the characters into the new object.
   if (buffer->IsAsciiRepresentation()) {
     ASSERT(string_result->IsAsciiRepresentation());
     char* dest = SeqAsciiString::cast(string_result)->GetChars();
     String::WriteToFlat(buffer, dest, start, end);
   } else {
     ASSERT(string_result->IsTwoByteRepresentation());
     uc16* dest = SeqTwoByteString::cast(string_result)->GetChars();
     String::WriteToFlat(buffer, dest, start, end);
   }
@@ skipping 2189 matching lines @@
 void ExternalStringTable::TearDown() {
   new_space_strings_.Free();
   old_space_strings_.Free();
 }
 
 
 List<Object*> ExternalStringTable::new_space_strings_;
 List<Object*> ExternalStringTable::old_space_strings_;
 
 } }  // namespace v8::internal