git.ipfire.org Git - thirdparty/glibc.git/commit

author	H.J. Lu <hjl.tools@gmail.com>
	Sun, 22 Oct 2017 15:03:46 +0000 (08:03 -0700)
committer	H.J. Lu <hjl.tools@gmail.com>
	Sun, 22 Oct 2017 15:05:15 +0000 (08:05 -0700)
commit	0ccc7153ccd8fbecefb0793a65cd5a85cdb099fc
tree	e1e3035d3f0048d9b822ce6a4c9128f90ce5e946	tree
parent	fe596486d694e657413d0d4c5a04598674ff71b1	commit \| diff

x86-64: Add logf with FMA

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

                           Before            After     Improvement
reciprocal-throughput      16.1534          13.8874       16%
latency                    41.9642          34.3072       22%

* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Add e_logf-fma.
(CFLAGS-e_logf-fma.c): New.
* sysdeps/x86_64/fpu/multiarch/e_logf-fma.c: New file.
* sysdeps/x86_64/fpu/multiarch/e_logf.c: Likewise.

ChangeLog		diff \| blob \| blame \| history
sysdeps/x86_64/fpu/multiarch/Makefile		diff \| blob \| blame \| history
sysdeps/x86_64/fpu/multiarch/e_logf-fma.c	[new file with mode: 0644]	blob
sysdeps/x86_64/fpu/multiarch/e_logf.c	[new file with mode: 0644]	blob