mirror of
https://sourceware.org/git/glibc.git
synced 2025-01-11 20:00:07 +00:00
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.
This commit is contained in:
parent
b2f6137ea5
commit
5d15c96975
@ -1,3 +1,11 @@
|
||||
2017-10-22 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* 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.
|
||||
|
||||
2017-10-22 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* sysdeps/i386/fpu/e_exp2f_data.c: Removed.
|
||||
|
@ -37,8 +37,9 @@ CFLAGS-slowpow-fma.c = -mfma -mavx2
|
||||
CFLAGS-s_sin-fma.c = -mfma -mavx2
|
||||
CFLAGS-s_tan-fma.c = -mfma -mavx2
|
||||
|
||||
libm-sysdep_routines += e_expf-fma
|
||||
libm-sysdep_routines += e_exp2f-fma e_expf-fma
|
||||
|
||||
CFLAGS-e_exp2f-fma.c = -mfma -mavx2
|
||||
CFLAGS-e_expf-fma.c = -mfma -mavx2
|
||||
|
||||
libm-sysdep_routines += e_exp-fma4 e_log-fma4 e_pow-fma4 s_atan-fma4 \
|
||||
|
3
sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c
Normal file
3
sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c
Normal file
@ -0,0 +1,3 @@
|
||||
#define __exp2f __exp2f_fma
|
||||
|
||||
#include <sysdeps/ieee754/flt-32/e_exp2f.c>
|
37
sysdeps/x86_64/fpu/multiarch/e_exp2f.c
Normal file
37
sysdeps/x86_64/fpu/multiarch/e_exp2f.c
Normal file
@ -0,0 +1,37 @@
|
||||
/* Multiple versions of exp2f.
|
||||
Copyright (C) 2017 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
extern float __redirect_exp2f (float);
|
||||
|
||||
#define SYMBOL_NAME exp2f
|
||||
#include "ifunc-fma.h"
|
||||
|
||||
libc_ifunc_redirected (__redirect_exp2f, __exp2f, IFUNC_SELECTOR ());
|
||||
|
||||
#ifdef SHARED
|
||||
# include <shlib-compat.h>
|
||||
versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);
|
||||
#else
|
||||
weak_alias (__exp2f, exp2f)
|
||||
#endif
|
||||
|
||||
strong_alias (__exp2f, __ieee754_exp2f)
|
||||
strong_alias (__exp2f, __exp2f_finite)
|
||||
|
||||
#define __exp2f __exp2f_sse2
|
||||
#include <sysdeps/ieee754/flt-32/e_exp2f.c>
|
Loading…
Reference in New Issue
Block a user