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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:58:54 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:00:18 -0700 |
| commit | 7eda65f69e0e4533b76ca4614fe516de03fe2b3a (patch) | |
| tree | 0b81497d81ea5be20c8a130f92c62f245a4e2089 /ChangeLog | |
| parent | 5d15c9697577d2c342b5ade820bfd7b84a736b23 (diff) | |
| download | glibc-7eda65f69e0e4533b76ca4614fe516de03fe2b3a.tar.gz glibc-7eda65f69e0e4533b76ca4614fe516de03fe2b3a.tar.xz glibc-7eda65f69e0e4533b76ca4614fe516de03fe2b3a.zip | |
i386: Replace assembly versions of e_exp2f with generic e_exp2f.c
This patch replaces i386 assembly versions of e_exp2f with generic
e_exp2f.c. For workload-spec2017.wrf, on Nehalem, it improves
performance by:
Before After Improvement
reciprocal-throughput 112.996 40.0454 182%
latency 126.581 54.4479 132%
On Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 113.14 39.447 186%
latency 136.068 55.684 144%
On IvyBridge with --disable-multi-arch, it improves performance by:
Before After Improvement
reciprocal-throughput 132.521 40.3759 228%
latency 145.791 58.4587 149%
* sysdeps/i386/fpu/e_exp2f.S: Removed.
* sysdeps/i386/fpu/w_exp2f.c: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_exp2f.c.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_exp2f-sse2.
(CFLAGS-e_exp2f-sse2.c): New.
* sysdeps/i386/i686/fpu/multiarch/e_exp2f-sse2.c: New file.
* sysdeps/i386/i686/fpu/multiarch/e_exp2f.c: Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 2fa1ddcd5d..2100c0a0df 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,17 @@ 2017-10-22 H.J. Lu <hongjiu.lu@intel.com> + * sysdeps/i386/fpu/e_exp2f.S: Removed. + * sysdeps/i386/fpu/w_exp2f.c: Likewise. + * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_exp2f.c. + * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. + * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): + Add e_exp2f-sse2. + (CFLAGS-e_exp2f-sse2.c): New. + * sysdeps/i386/i686/fpu/multiarch/e_exp2f-sse2.c: New file. + * sysdeps/i386/i686/fpu/multiarch/e_exp2f.c: Likewise. + +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. |