From e1f59bebd885c442c14df3554da9fe08792ce7ce Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Sun, 22 Oct 2017 07:49:36 -0700 Subject: x86-64: Replace assembly versions of e_expf with generic e_expf.c This patch replaces x86-64 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 36.039 20.7749 73% latency 58.8096 40.8715 43% On Skylake, it improves Before After Improvement reciprocal-throughput 18.4436 11.1693 65% latency 47.5162 37.5411 26% * 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. * sysdeps/x86_64/fpu/libm-test-ulps: Updated for generic e_expf.c. * sysdeps/x86_64/fpu/multiarch/Makefile (CFLAGS-e_expf-fma.c): New. * sysdeps/x86_64/fpu/multiarch/e_expf-fma.c: New file. * sysdeps/x86_64/fpu/multiarch/e_expf.c (__redirect_ieee754_expf): Renamed to ... (__redirect_expf): This. (SYMBOL_NAME): Changed to expf. (__ieee754_expf): Renamed to ... (__expf): This. (__GI___expf): This. (__ieee754_expf): Add strong_alias. (__expf_finite): Likewise. (__expf): New. Include . --- ChangeLog | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index d2f0858f84..49de6bf304 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,25 @@ +2017-10-22 H.J. Lu + + * 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. + * sysdeps/x86_64/fpu/libm-test-ulps: Updated for generic + e_expf.c. + * sysdeps/x86_64/fpu/multiarch/Makefile (CFLAGS-e_expf-fma.c): + New. + * sysdeps/x86_64/fpu/multiarch/e_expf-fma.c: New file. + * sysdeps/x86_64/fpu/multiarch/e_expf.c (__redirect_ieee754_expf): + Renamed to ... + (__redirect_expf): This. + (SYMBOL_NAME): Changed to expf. + (__ieee754_expf): Renamed to ... + (__expf): This. + (__GI___expf): This. + (__ieee754_expf): Add strong_alias. + (__expf_finite): Likewise. + (__expf): New. + Include . + 2017-10-22 Paul Eggert [BZ #22332] -- cgit 1.4.1