This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH] x86_64: Utilize vector math functions w/o -fopenmp
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Andrew Senkevich <andrew dot n dot senkevich at gmail dot com>
- Cc: libc-alpha <libc-alpha at sourceware dot org>
- Date: Fri, 4 Dec 2015 15:46:37 +0000
- Subject: Re: [PATCH] x86_64: Utilize vector math functions w/o -fopenmp
- Authentication-results: sourceware.org; auth=none
- References: <CAMXFM3tOcznwyGywfCLf1baLW6rLyUdnX1SZe6-AGh41Wb0mqA at mail dot gmail dot com>
On Fri, 4 Dec 2015, Andrew Senkevich wrote:
> +# elif __GNUC_PREREQ (6,0)
> +/* W/o OpenMP use GCC 6.* __attribute__((__simd__)). */
> +# define __ATTR_SIMD_x86_64 __attribute__((__simd__("notinbranch")))
> +# undef __DECL_SIMD_cos
> +# define __DECL_SIMD_cos __ATTR_SIMD_x86_64
Why do you need to duplicate the list of functions? It would seem better
to define __DECL_SIMD_x86_64 with two different definitions depending on
the macros predefined by the compiler, then define all the
__DECL_SIMD_<func> macros if __DECL_SIMD_x86_64 has been defined.
# if defined _OPENMP && _OPENMP >= 201307
# define __DECL_SIMD_x86_64 ...
# elif __GNUC_PREREQ (6,0)
# define __DECL_SIMD_x86_64 ...
# endif
# ifdef __DECL_SIMD_x86_64
# undef __DECL_SIMD_cos
# define __DECL_SIMD_cos __DECL_SIMD_x86_64
etc.
--
Joseph S. Myers
joseph@codesourcery.com