Remove unused code for AstSentinels and related stuff.

src/isolate.cc

 // 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 1391 matching lines @@
       handle_scope_implementer_(NULL),
       unicode_cache_(NULL),
       in_use_list_(0),
       free_list_(0),
       preallocated_storage_preallocated_(false),
       pc_to_code_cache_(NULL),
       write_input_buffer_(NULL),
       global_handles_(NULL),
       context_switcher_(NULL),
       thread_manager_(NULL),
-      ast_sentinels_(NULL),
       string_tracker_(NULL),
       regexp_stack_(NULL),
       embedder_data_(NULL) {
   TRACE_ISOLATE(constructor);
 
   memset(isolate_addresses_, 0,
       sizeof(isolate_addresses_[0]) * (k_isolate_address_count + 1));
 
   heap_.isolate_ = this;
   zone_.isolate_ = this;
@@ skipping 116 matching lines @@
 
   delete[] assembler_spare_buffer_;
   assembler_spare_buffer_ = NULL;
 
   delete unicode_cache_;
   unicode_cache_ = NULL;
 
   delete regexp_stack_;
   regexp_stack_ = NULL;
 
-  delete ast_sentinels_;
-  ast_sentinels_ = NULL;
-
   delete descriptor_lookup_cache_;
   descriptor_lookup_cache_ = NULL;
   delete context_slot_cache_;
   context_slot_cache_ = NULL;
   delete keyed_lookup_cache_;
   keyed_lookup_cache_ = NULL;
 
   delete transcendental_cache_;
   transcendental_cache_ = NULL;
   delete stub_cache_;
@@ skipping 141 matching lines @@
   keyed_lookup_cache_ = new KeyedLookupCache();
   context_slot_cache_ = new ContextSlotCache();
   descriptor_lookup_cache_ = new DescriptorLookupCache();
   unicode_cache_ = new UnicodeCache();
   pc_to_code_cache_ = new PcToCodeCache(this);
   write_input_buffer_ = new StringInputBuffer();
   global_handles_ = new GlobalHandles(this);
   bootstrapper_ = new Bootstrapper();
   handle_scope_implementer_ = new HandleScopeImplementer(this);
   stub_cache_ = new StubCache(this);
-  ast_sentinels_ = new AstSentinels();
   regexp_stack_ = new RegExpStack();
   regexp_stack_->isolate_ = this;
 
   // Enable logging before setting up the heap
   logger_->Setup();
 
   CpuProfiler::Setup();
   HeapProfiler::Setup();
 
   // Initialize other runtime facilities
@@ skipping 153 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal