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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:01:38 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 08:02:58 -0700 |
| commit | fe596486d694e657413d0d4c5a04598674ff71b1 (patch) | |
| tree | baa82d03de8d66e51415ff7e0489ef7401126195 /ChangeLog | |
| parent | 7eda65f69e0e4533b76ca4614fe516de03fe2b3a (diff) | |
| download | glibc-fe596486d694e657413d0d4c5a04598674ff71b1.tar glibc-fe596486d694e657413d0d4c5a04598674ff71b1.tar.gz glibc-fe596486d694e657413d0d4c5a04598674ff71b1.tar.bz2 glibc-fe596486d694e657413d0d4c5a04598674ff71b1.zip | |
i386: Replace assembly versions of e_logf with generic e_logf.c
This patch replaces i386 assembly versions of e_logf with generic
e_logf.c. For workload-spec2017.wrf, on Nehalem, it improves
performance by:
Before After Improvement
reciprocal-throughput 73.3865 40.0454 83%
latency 90.0985 54.4479 65%
On Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 75.1384 22.1452 239%
latency 91.9441 50.7925 81%
On IvyBridge with --disable-multi-arch, it improves performance by:
Before After Improvement
reciprocal-throughput 84.5575 28.7879 193%
latency 103.971 57.5231 80%
* sysdeps/i386/fpu/e_logf.S: Removed.
* sysdeps/i386/fpu/e_logf_data.c: Likewise.
* sysdeps/i386/fpu/w_logf.c: Likewise.
* sysdeps/i386/i686/fpu/e_logf.S: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_logf.c.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_logf-sse2.
(CFLAGS-e_logf-sse2.c): New.
* sysdeps/i386/i686/fpu/multiarch/e_logf-sse2.c: New file.
* sysdeps/i386/i686/fpu/multiarch/e_logf.c: Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -1,5 +1,19 @@ 2017-10-22 H.J. Lu <hongjiu.lu@intel.com> + * sysdeps/i386/fpu/e_logf.S: Removed. + * sysdeps/i386/fpu/e_logf_data.c: Likewise. + * sysdeps/i386/fpu/w_logf.c: Likewise. + * sysdeps/i386/i686/fpu/e_logf.S: Likewise. + * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_logf.c. + * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. + * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): + Add e_logf-sse2. + (CFLAGS-e_logf-sse2.c): New. + * sysdeps/i386/i686/fpu/multiarch/e_logf-sse2.c: New file. + * sysdeps/i386/i686/fpu/multiarch/e_logf.c: Likewise. + +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. |