X64: Turn of gcc strict-aliasing optimization for X64 release.

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 154 matching lines @@
         'LINKFLAGS':    ['-m32']
       }
     },
     'arch:ia32': {
       'CPPDEFINES':   ['V8_TARGET_ARCH_IA32']
     },
     'arch:arm': {
       'CPPDEFINES':   ['V8_TARGET_ARCH_ARM']
     },
     'arch:x64': {
+      'CCFLAGS':      ['-fno-strict-aliasing'],
       'CPPDEFINES':   ['V8_TARGET_ARCH_X64']
     },
     'prof:oprofile': {
       'CPPDEFINES':   ['ENABLE_OPROFILE_AGENT']
     }
   },
   'msvc': {
     'all': {
       'DIALECTFLAGS': ['/nologo'],
       'CCFLAGS':      ['$DIALECTFLAGS', '$WARNINGFLAGS'],
@@ skipping 753 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()