| commit | 80bb5935632faf8a8e94daf976340e549be9d4c5 | |
| author | H.J. Lu <hjl.tools@gmail.com> | |
| Sun, 22 Oct 2017 15:07:48 +0000 (22 08:07 -0700) | ||
| committer | H.J. Lu <hjl.tools@gmail.com> | |
| Sun, 22 Oct 2017 15:08:00 +0000 (22 08:08 -0700) | ||
| tree | 548797b41ae7fcbc7a2025cc0060f7bd8b7da16c | treesnapshot (tar.gz zip) |
| parent | 5c7adbd8eded546eb6e17a82f5ab3b35def47f38 | commitdiff |
x86-64: Add powf with FMA
For workload-spec2017.wrf, on Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 35.4713 27.3842 29%
latency 82.4537 66.3175 24%
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_powf-fma.
(CFLAGS-e_powf-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/e_powf-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_powf.c: Likewise.
For workload-spec2017.wrf, on Skylake, it improves performance by:
Before After Improvement
reciprocal-throughput 35.4713 27.3842 29%
latency 82.4537 66.3175 24%
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_powf-fma.
(CFLAGS-e_powf-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/e_powf-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_powf.c: Likewise.
| ChangeLog | diffblobblamehistory | |
| sysdeps/x86_64/fpu/multiarch/Makefile | diffblobblamehistory | |
| sysdeps/x86_64/fpu/multiarch/e_powf-fma.c | [new file with mode: 0644] | blob |
| sysdeps/x86_64/fpu/multiarch/e_powf.c | [new file with mode: 0644] | blob |