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(parent: b2f6137) | patch
x86-64: Add exp2f with FMA
authorH.J. Lu <hjl.tools@gmail.com>
Sun, 22 Oct 2017 14:55:49 +0000 (07:55 -0700)
committerH.J. Lu <hjl.tools@gmail.com>
Sun, 22 Oct 2017 14:57:50 +0000 (07:57 -0700)
commit5d15c9697577d2c342b5ade820bfd7b84a736b23
treed16d35b14e05b635b9dc8d147fbd6c147852d446tree | snapshot
parentb2f6137ea570933fb4be286574cc58b794eb5b5fcommit | diff
x86-64: Add exp2f with FMA

For workload-spec2017.wrf, on Skylake, it improves performance by:

                           Before            After     Improvement
reciprocal-throughput      13.0291          11.2225       16%
latency                    44.5154          37.5766       18%

* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_exp2f-fma.
(CFLAGS-e_exp2f-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_exp2f.c: Likewise.
ChangeLog diff | blob | history
sysdeps/x86_64/fpu/multiarch/Makefile diff | blob | history
sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c [new file with mode: 0644] blob
sysdeps/x86_64/fpu/multiarch/e_exp2f.c [new file with mode: 0644] blob
Domain: System / Toolchain;