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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:07:48 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:08:00 -0700 |
| commit | 80bb5935632faf8a8e94daf976340e549be9d4c5 (patch) | |
| tree | 548797b41ae7fcbc7a2025cc0060f7bd8b7da16c /ChangeLog | |
| parent | 5c7adbd8eded546eb6e17a82f5ab3b35def47f38 (diff) | |
| download | glibc-80bb5935632faf8a8e94daf976340e549be9d4c5.tar.xz glibc-80bb5935632faf8a8e94daf976340e549be9d4c5.zip | |
x86-64: Add powf with FMA
For workload-spec2017.wrf, on Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 35.4713 27.3842 29%
latency 82.4537 66.3175 24%
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_powf-fma.
(CFLAGS-e_powf-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/e_powf-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_powf.c: Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -1,6 +1,14 @@ 2017-10-22 H.J. Lu <hongjiu.lu@intel.com> * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): + Add e_powf-fma. + (CFLAGS-e_powf-fma.c): New. + * sysdeps/x86_64/fpu/multiarch/e_powf-fma.c: New file. + * sysdeps/x86_64/fpu/multiarch/e_powf.c: Likewise. + +2017-10-22 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): Add e_log2f-fma. (CFLAGS-e_log2f-fma.c): New. * sysdeps/x86_64/fpu/multiarch/e_log2f-fma.c: New file. |