diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:54:38 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-22 07:54:50 -0700 |
| commit | b2f6137ea570933fb4be286574cc58b794eb5b5f (patch) | |
| tree | b95f459a9090aba7854e32c454001a610f400728 /ChangeLog | |
| parent | e1f59bebd885c442c14df3554da9fe08792ce7ce (diff) | |
| download | glibc-b2f6137ea570933fb4be286574cc58b794eb5b5f.tar.gz glibc-b2f6137ea570933fb4be286574cc58b794eb5b5f.tar.xz glibc-b2f6137ea570933fb4be286574cc58b794eb5b5f.zip | |
i386: Replace assembly versions of e_expf with generic e_expf.c
This patch replaces i386 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 55.5724 40.2664 38%
latency 80.0687 60.8517 31%
On Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 62.4056 39.4188 58%
latency 85.5496 59.6377 43%
On IvyBridge with --disable-multi-arch, it improves performance by:
Before After Improvement
reciprocal-throughput 133.707 40.3778 231%
latency 149.191 63.2515 135%
* sysdeps/i386/fpu/e_exp2f_data.c: Removed.
* sysdeps/i386/fpu/e_expf.S: Likewise.
* sysdeps/i386/fpu/math_errf.c: Likewise.
* sysdeps/i386/fpu/w_expf.c: Likewise.
* sysdeps/i386/i686/fpu/multiarch/e_expf-ia32.S: Likewise.
* sysdeps/i386/i686/fpu/multiarch/e_expf-sse2.S: Likewise.
* sysdeps/i386/i686/fpu/multiarch/w_expf.c: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_expf.c.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines):
Remove e_expf-ia32.
(CFLAGS-e_expf-sse2.c): New.
* sysdeps/i386/i686/fpu/multiarch/e_expf-sse2.c: New file.
* sysdeps/i386/i686/fpu/multiarch/e_expf.c: Rewritten.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 49de6bf304..5aca573e59 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,22 @@ 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. + * sysdeps/i386/fpu/w_expf.c: Likewise. + * sysdeps/i386/i686/fpu/multiarch/e_expf-ia32.S: Likewise. + * sysdeps/i386/i686/fpu/multiarch/e_expf-sse2.S: Likewise. + * sysdeps/i386/i686/fpu/multiarch/w_expf.c: Likewise. + * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_expf.c. + * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. + * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): + Remove e_expf-ia32. + (CFLAGS-e_expf-sse2.c): New. + * sysdeps/i386/i686/fpu/multiarch/e_expf-sse2.c: New file. + * sysdeps/i386/i686/fpu/multiarch/e_expf.c: Rewritten. + +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. |