[regexp] Add support for dotAll flag

src/assembler.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 905 matching lines @@
   // Static variable StackGuard::address_of_jslimit()
   V8_EXPORT_PRIVATE static ExternalReference address_of_stack_limit(
       Isolate* isolate);
 
   // Static variable StackGuard::address_of_real_jslimit()
   static ExternalReference address_of_real_stack_limit(Isolate* isolate);
 
   // Static variable RegExpStack::limit_address()
   static ExternalReference address_of_regexp_stack_limit(Isolate* isolate);
 
+  // Direct access to FLAG_harmony_regexp_dotall.
+  static ExternalReference address_of_regexp_dotall_flag(Isolate* isolate);
+
   // Static variables for RegExp.
   static ExternalReference address_of_static_offsets_vector(Isolate* isolate);
   static ExternalReference address_of_regexp_stack_memory_address(
       Isolate* isolate);
   static ExternalReference address_of_regexp_stack_memory_size(
       Isolate* isolate);
 
   // Write barrier.
   static ExternalReference store_buffer_top(Isolate* isolate);
 
@@ skipping 312 matching lines @@
     std::vector<ConstantPoolEntry> shared_entries;
   };
 
   Label emitted_label_;  // Records pc_offset of emitted pool
   PerTypeEntryInfo info_[ConstantPoolEntry::NUMBER_OF_TYPES];
 };
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_ASSEMBLER_H_