glibc/sysdeps/x86_64/fpu/multiarch/s_sincosf-fma.c

#define SINCOSF __sincosf_fma
#include <sysdeps/ieee754/flt-32/s_sincosf.c>
x86-64: Add sincosf with vector FMA Since the x86-64 assembly version of sincosf is higly optimized with vector instructions, there isn't much room for improvement. However s_sincosf.c written in C with vector math and intrinsics can be optimized by GCC with FMA. On Skylake, bench-sincosf reports performance improvement: Assembly FMA improvement max 104.042 101.008 3% min 9.426 8.586 10% mean 20.6209 18.2238 13% * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): Add s_sincosf-sse2 and s_sincosf-fma. (CFLAGS-s_sincosf-fma.c): New. * sysdeps/x86_64/fpu/multiarch/s_sincosf-fma.c: New file. * sysdeps/x86_64/fpu/multiarch/s_sincosf-sse2.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_sincosf.c: Likewise. * sysdeps/x86_64/fpu/s_sincosf.S: Don't add alias if __sincosf is defined. 2018-01-08 16:04:26 +00:00			`#define SINCOSF __sincosf_fma`
x86-64: Vectorize sincosf_poly and update s_sincosf-fma.c Add <sincosf_poly.h> and include it in s_sincosf.h to allow vectorized sincosf_poly. Add x86 sincosf_poly.h to vectorize sincosf_poly. On Broadwell, bench-sincosf shows: Before After Improvement max 160.273 114.198 40% min 6.25 5.625 11% mean 13.0325 10.6462 22% Vectorized sincosf_poly shows Before After Improvement max 138.653 114.198 21% min 5.004 5.625 -11% mean 11.5934 10.6462 9% Tested on x86-64 and i686 as well as with build-many-glibcs.py. * sysdeps/ieee754/flt-32/s_sincosf.h: Include <sincosf_poly.h>. (sincos_t, sincosf_poly, sinf_poly): Moved to ... * sysdeps/ieee754/flt-32/sincosf_poly.h: Here. New file. * sysdeps/x86/fpu/s_sincosf_data.c: New file. * sysdeps/x86/fpu/sincosf_poly.h: Likewise. * sysdeps/x86_64/fpu/multiarch/s_sincosf-fma.c: Just include <sysdeps/ieee754/flt-32/s_sincosf.c>. 2018-12-26 14:56:04 +00:00			`#include <sysdeps/ieee754/flt-32/s_sincosf.c>`