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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:49:36 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:49:55 -0700 |
| commit | e1f59bebd885c442c14df3554da9fe08792ce7ce (patch) | |
| tree | 2a8d4b88a4373cc77e4085d050d806b7bd216549 /ChangeLog | |
| parent | a159b53fa059947cc2548e3b0d5bdcf7b9630ba8 (diff) | |
| download | glibc-e1f59bebd885c442c14df3554da9fe08792ce7ce.tar.gz glibc-e1f59bebd885c442c14df3554da9fe08792ce7ce.tar.xz glibc-e1f59bebd885c442c14df3554da9fe08792ce7ce.zip | |
x86-64: Replace assembly versions of e_expf with generic e_expf.c
This patch replaces x86-64 assembly versions of e_expf with generic
e_expf.c. For workload-spec2017.wrf, on Nehalem, it improves
performance by:
Before After Improvement
reciprocal-throughput 36.039 20.7749 73%
latency 58.8096 40.8715 43%
On Skylake, it improves
Before After Improvement
reciprocal-throughput 18.4436 11.1693 65%
latency 47.5162 37.5411 26%
* sysdeps/x86_64/fpu/e_expf.S: Removed.
* sysdeps/x86_64/fpu/multiarch/e_expf-fma.S: Likewise.
* sysdeps/x86_64/fpu/w_expf.c: Likewise.
* sysdeps/x86_64/fpu/libm-test-ulps: Updated for generic
e_expf.c.
* sysdeps/x86_64/fpu/multiarch/Makefile (CFLAGS-e_expf-fma.c):
New.
* sysdeps/x86_64/fpu/multiarch/e_expf-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_expf.c (__redirect_ieee754_expf):
Renamed to ...
(__redirect_expf): This.
(SYMBOL_NAME): Changed to expf.
(__ieee754_expf): Renamed to ...
(__expf): This.
(__GI___expf): This.
(__ieee754_expf): Add strong_alias.
(__expf_finite): Likewise.
(__expf): New.
Include <sysdeps/ieee754/flt-32/e_expf.c>.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index d2f0858f84..49de6bf304 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,25 @@ +2017-10-22 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/x86_64/fpu/e_expf.S: Removed. + * sysdeps/x86_64/fpu/multiarch/e_expf-fma.S: Likewise. + * sysdeps/x86_64/fpu/w_expf.c: Likewise. + * sysdeps/x86_64/fpu/libm-test-ulps: Updated for generic + e_expf.c. + * sysdeps/x86_64/fpu/multiarch/Makefile (CFLAGS-e_expf-fma.c): + New. + * sysdeps/x86_64/fpu/multiarch/e_expf-fma.c: New file. + * sysdeps/x86_64/fpu/multiarch/e_expf.c (__redirect_ieee754_expf): + Renamed to ... + (__redirect_expf): This. + (SYMBOL_NAME): Changed to expf. + (__ieee754_expf): Renamed to ... + (__expf): This. + (__GI___expf): This. + (__ieee754_expf): Add strong_alias. + (__expf_finite): Likewise. + (__expf): New. + Include <sysdeps/ieee754/flt-32/e_expf.c>. + 2017-10-22 Paul Eggert <eggert@cs.ucla.edu> [BZ #22332] |