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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/67014] builtin_tolower is inefficient.
Date: Wed, 18 Aug 2021 12:40:28 +0000	[thread overview]
Message-ID: <bug-67014-4-lYaCYHIurY@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-67014-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67014

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |NEW

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
So the macro definition comes from glibc:
ctype/ctype.h

# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
#  define tolower(c)    __tobody (c, tolower, *__ctype_tolower_loc (), (c))
#  define toupper(c)    __tobody (c, toupper, *__ctype_toupper_loc (), (c))
# endif /* Optimizing gcc */

That's why the GCC compiler can't map it to a builtin. On the other hand, I
don't see why would it be beneficial in this case?

      parent reply	other threads:[~2021-08-18 12:40 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-26  4:53 [Bug middle-end/67014] New: " neleai at seznam dot cz
2021-06-04 21:45 ` [Bug ipa/67014] " pinskia at gcc dot gnu.org
2021-06-10 15:17 ` marxin at gcc dot gnu.org
2021-08-18 12:40 ` marxin at gcc dot gnu.org [this message]

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