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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-03-13 17:55:03 +0000 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-06-26 14:33:58 -0300 |
| commit | aa32f5bf0cfd73525fa5d7142e7abf5def87bb08 (patch) | |
| tree | 90938f6917666cd16b28c6be292828cc20f91556 /ChangeLog | |
| parent | 9d5d214e86db30633e905907f7b3cf56b8fee16e (diff) | |
| download | glibc-aa32f5bf0cfd73525fa5d7142e7abf5def87bb08.tar.xz glibc-aa32f5bf0cfd73525fa5d7142e7abf5def87bb08.zip | |
powerpc: Use generic e_expf
Generic implementation is faster on both power8 and power9:
POWER9:
- sysdeps/ieee754/flt-32/e_expf.c
"expf": {
"workload-spec2017.wrf": {
"duration": 5.1236e+09,
"iterations": 7.53344e+08,
"reciprocal-throughput": 5.9436,
"latency": 7.65869,
"max-throughput": 1.68248e+08,
"min-throughput": 1.30571e+08
}
}
- sysdeps/powerpc/powerpc64/power8/fpu/e_expf.S
"expf": {
"workload-spec2017.wrf": {
"duration": 5.14429e+09,
"iterations": 5.29248e+08,
"reciprocal-throughput": 8.05372,
"latency": 11.3863,
"max-throughput": 1.24166e+08,
"min-throughput": 8.78249e+07
}
}
Checked on powerpc-linux-gnu (built without --with-cpu, with
--with-cpu=power4 and with --with-cpu=power5+ and --disable-multi-arch),
powerpc64-linux-gnu (built without --with-cp and with --with-cpu=power5+
and --disable-multi-arch).
* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
(libm-sysdep_routines): Remove e_expf-power8 and expf-ppc64.
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf-power8.S: Remove
file.
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf-ppc64.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/w_expf.c: Likewise.
* sysdeps/powerpc/powerpc64/power8/fpu/e_expf.S: Likewise.
* sysdeps/powerpc/powerpc64/power8/fpu/w_expf.c: Likewise.
Reviewed-by: Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -1,5 +1,15 @@ 2019-06-26 Adhemerval Zanella <adhemerval.zanella@linaro.org> + * sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile + (libm-sysdep_routines): Remove e_expf-power8 and expf-ppc64. + * sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf-power8.S: Remove + file. + * sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf-ppc64.c: Likewise. + * sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf.c: Likewise. + * sysdeps/powerpc/powerpc64/fpu/multiarch/w_expf.c: Likewise. + * sysdeps/powerpc/powerpc64/power8/fpu/e_expf.S: Likewise. + * sysdeps/powerpc/powerpc64/power8/fpu/w_expf.c: Likewise. + * sysdeps/powerpc/powerpc32/fpu/Makefile [$(subdir) == math] (CFLAGS-s_lround.c): New rule. * sysdeps/powerpc/powerpc32/fpu/s_llround.c (__llround): Add power5+ |