From 5313581cb52fd5d3d2cf222ddb6f8f86f090974f Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Sun, 22 Oct 2017 08:11:15 -0700 Subject: i386: Replace assembly versions of e_powf with generic e_powf.c This patch replaces i386 assembly versions of e_powf with generic e_powf.c. For workload-spec2017.wrf, on Nehalem, it improves performance by: Before After Improvement reciprocal-throughput 230.855 78.3358 194% latency 231.685 94.1259 146% On Skylake, it improves performance by: Before After Improvement reciprocal-throughput 239.858 47.4713 405% latency 247.57 93.8798 163% On IvyBridge with --disable-multi-arch, it improves performance by: Before After Improvement reciprocal-throughput 269.078 63.3758 324% latency 271.473 102.091 165% * sysdeps/i386/fpu/e_powf.S: Removed. * sysdeps/i386/fpu/e_powf_log2_data.c: Likewise. * sysdeps/i386/fpu/w_powf.c: Likewise. * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_powf.c. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): Add e_powf-sse2. (CFLAGS-e_powf-sse2.c): New. * sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c: New file. * sysdeps/i386/i686/fpu/multiarch/e_powf.c: Likewise. --- ChangeLog | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 78910c50dc..5d45da1d8c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,16 @@ +2017-10-22 H.J. Lu + + * sysdeps/i386/fpu/e_powf.S: Removed. + * sysdeps/i386/fpu/e_powf_log2_data.c: Likewise. + * sysdeps/i386/fpu/w_powf.c: Likewise. + * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_powf.c. + * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. + * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): + Add e_powf-sse2. + (CFLAGS-e_powf-sse2.c): New. + * sysdeps/i386/i686/fpu/multiarch/e_powf-sse2.c: New file. + * sysdeps/i386/i686/fpu/multiarch/e_powf.c: Likewise. + 2017-10-22 H.J. Lu * sysdeps/i386/fpu/e_log2f.S: Removed. -- cgit 1.4.1