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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-12-12 15:32:58 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-12-12 15:32:58 -0800 |
| commit | ac817e083b37a5c25d05cde8bde302d7a93ffc5e (patch) | |
| tree | 779f6b5284d8548ff24bf96db06e347b011ea46c /NEWS | |
| parent | eb4285768bb0608e2c3381d0a5214cae83b1f282 (diff) | |
| download | glibc-ac817e083b37a5c25d05cde8bde302d7a93ffc5e.zip glibc-ac817e083b37a5c25d05cde8bde302d7a93ffc5e.tar.gz glibc-ac817e083b37a5c25d05cde8bde302d7a93ffc5e.tar.bz2 | |
x86-64: Add cosf with FMA
On Skylake, bench-cosf reports performance improvement:
Before After Improvement
max 135.362 94.552 43%
min 8.532 7.688 11%
mean 17.1446 11.8128 45%
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add s_cosf-sse2 and s_cosf-fma.
(CFLAGS-s_cosf-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/s_cosf-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/s_cosf-sse2.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/s_cosf.c: Likewise.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -9,8 +9,9 @@ Version 2.27 Major new features: -* Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, sinf and - tan with FMA, contributed by Arjan van de Ven and H.J. Lu from Intel. +* Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf, + sinf and tan with FMA, contributed by Arjan van de Ven and H.J. Lu + from Intel. * Optimized x86-64 trunc and truncf for processors with SSE4.1. |