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Utilize x86_64 vector math functions w/o -fopenmp. 

This patch allows to use x86_64 vector math functions with GCC 6.*
without OpenMP SIMD constructs.  For additional details please visit
<https://sourceware.org/glibc/wiki/libmvec#Example_2>.

    * sysdeps/x86/fpu/bits/math-vector.h: W/o -fopenmp declare vector math
    functions with GCC 6.* __attribute__ ((__simd__)).
This commit is contained in:
Andrew Senkevich 2015-12-07 21:58:26 +03:00
parent 5d1d4918ee
commit 377ed004f2
2 changed files with 11 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2015-12-07 Andrew Senkevich <andrew.senkevich@intel.com>
* sysdeps/x86/fpu/bits/math-vector.h: W/o -fopenmp use GCC 6.*
__attribute__ ((__simd__)) for vector math function declarations.
2015-12-04 Paul Eggert <eggert@cs.ucla.edu>
Fix typo in strncat, wcsncat manual entries

6
sysdeps/x86/fpu/bits/math-vector.h
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@ -28,6 +28,12 @@
# if defined _OPENMP && _OPENMP >= 201307
/* OpenMP case. */
# define __DECL_SIMD_x86_64 _Pragma ("omp declare simd notinbranch")
# elif __GNUC_PREREQ (6,0)
/* W/o OpenMP use GCC 6.* __attribute__ ((__simd__)). */
# define __DECL_SIMD_x86_64 __attribute__ ((__simd__ ("notinbranch")))
# endif
# ifdef __DECL_SIMD_x86_64
# undef __DECL_SIMD_cos
# define __DECL_SIMD_cos __DECL_SIMD_x86_64
# undef __DECL_SIMD_cosf