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Re: [PATCH 2/*] Remove pre-gcc 3.4 string inline optimizations.
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Ondřej Bílka <neleai at seznam dot cz>
- Cc: <libc-alpha at sourceware dot org>
- Date: Thu, 28 May 2015 16:05:56 +0000
- Subject: Re: [PATCH 2/*] Remove pre-gcc 3.4 string inline optimizations.
- Authentication-results: sourceware.org; auth=none
- References: <20150524150715 dot GA31589 at domone> <20150524152706 dot GB31589 at domone>
On Sun, 24 May 2015, Ondřej Bílka wrote:
> -/* GCC < 3.0 optimizes memset(s, 0, n) but not bzero(s, n).
> - The optimization is broken before EGCS 1.1.
> - GCC 3.0+ has __builtin_bzero as well, but at least till GCC 3.4
> - if it decides to call the library function, it calls memset
> - and not bzero. */
> -# if __GNUC_PREREQ (2, 91)
> -# define __bzero(s, n) __builtin_memset (s, '\0', n)
> -# endif
It looks like you're removing a definition that would be used with current
GCC here.
--
Joseph S. Myers
joseph@codesourcery.com