X64: Implement RegExp natively.

SConstruct

 # Copyright 2008 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 83 matching lines @@
                      ANDROID_TOP + '/prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/lib/gcc/arm-eabi/4.2.1/interwork/libgcc.a',
                      ANDROID_TOP + '/out/target/product/generic/obj/lib/crtend_android.o'];
 
 LIBRARY_FLAGS = {
   'all': {
     'CPPDEFINES':   ['ENABLE_LOGGING_AND_PROFILING'],
     'CPPPATH': [join(root_dir, 'src')],
     'regexp:native': {
       'arch:ia32' : {
         'CPPDEFINES': ['V8_NATIVE_REGEXP']
+      },
+      'arch:x64' : {
+        'CPPDEFINES': ['V8_NATIVE_REGEXP']
       }
     }
   },
   'gcc': {
     'all': {
       'CCFLAGS':      ['$DIALECTFLAGS', '$WARNINGFLAGS'],
       'CXXFLAGS':     ['$CCFLAGS', '-fno-rtti', '-fno-exceptions'],
     },
     'mode:debug': {
       'CCFLAGS':      ['-g', '-O0'],
@@ skipping 796 matching lines @@
 # version of scons.  Also, there's a bug in some revisions that
 # doesn't allow this flag to be set, so we swallow any exceptions.
 # Lovely.
 try:
   SetOption('warn', 'no-deprecated')
 except:
   pass
 
 
 Build()