diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:55:49 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:57:50 -0700 |
| commit | 5d15c9697577d2c342b5ade820bfd7b84a736b23 (patch) | |
| tree | d16d35b14e05b635b9dc8d147fbd6c147852d446 /ChangeLog | |
| parent | b2f6137ea570933fb4be286574cc58b794eb5b5f (diff) | |
| download | glibc-5d15c9697577d2c342b5ade820bfd7b84a736b23.tar.gz glibc-5d15c9697577d2c342b5ade820bfd7b84a736b23.tar.xz glibc-5d15c9697577d2c342b5ade820bfd7b84a736b23.zip | |
x86-64: Add exp2f with FMA
For workload-spec2017.wrf, on Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 13.0291 11.2225 16%
latency 44.5154 37.5766 18%
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_exp2f-fma.
(CFLAGS-e_exp2f-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_exp2f.c: Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 5aca573e59..2fa1ddcd5d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,13 @@ 2017-10-22 H.J. Lu <hongjiu.lu@intel.com> + * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): + Add e_exp2f-fma. + (CFLAGS-e_exp2f-fma.c): New. + * sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c: New file. + * sysdeps/x86_64/fpu/multiarch/e_exp2f.c: Likewise. + +2017-10-22 H.J. Lu <hongjiu.lu@intel.com> + * sysdeps/i386/fpu/e_exp2f_data.c: Removed. * sysdeps/i386/fpu/e_expf.S: Likewise. * sysdeps/i386/fpu/math_errf.c: Likewise. |