Get rid of the "spare buffer" cache.

src/isolate.cc

 // Copyright 2012 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.
 
 #include <stdlib.h>
 
 #include "src/v8.h"
 
 #include "src/ast.h"
 #include "src/base/platform/platform.h"
@@ skipping 1627 matching lines @@
 
   // Has to be called while counters_ are still alive
   runtime_zone_.DeleteKeptSegment();
 
   // The entry stack must be empty when we get here.
   DCHECK(entry_stack_ == NULL || entry_stack_->previous_item == NULL);
 
   delete entry_stack_;
   entry_stack_ = NULL;
 
-  delete[] assembler_spare_buffer_;
-  assembler_spare_buffer_ = NULL;
-
   delete unicode_cache_;
   unicode_cache_ = NULL;
 
   delete date_cache_;
   date_cache_ = NULL;
 
   delete[] code_stub_interface_descriptors_;
   code_stub_interface_descriptors_ = NULL;
 
   delete[] call_descriptors_;
@@ skipping 706 matching lines @@
   if (prev_ && prev_->Intercept(flag)) return true;
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 } }  // namespace v8::internal