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| author | Sunil K Pandey <skpgkp2@gmail.com> | 2025-03-10 10:24:07 -0700 |
|---|---|---|
| committer | Sunil K Pandey <skpgkp2@gmail.com> | 2025-03-13 06:20:32 -0700 |
| commit | c6352111c72a20b3588ae304dd99b63e25dd6d85 (patch) | |
| tree | 18f1ebaaf8dbe06d31944725e3005b31d30d8903 /sysdeps/x86_64/fpu | |
| parent | 360cce0b066f34e85e473c04cdc16e6fa426021b (diff) | |
| download | glibc-c6352111c72a20b3588ae304dd99b63e25dd6d85.tar.xz glibc-c6352111c72a20b3588ae304dd99b63e25dd6d85.zip | |
x86_64: Add tanh with FMA
On Skylake, it improves tanh bench performance by:
Before After Improvement
max 110.89 95.826 14%
min 20.966 20.157 4%
mean 30.9601 29.8431 4%
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/x86_64/fpu')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/Makefile | 2 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/s_tanh-fma.c | 11 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/s_tanh.c | 31 |
3 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile index e823d2fcc6..a198315f1c 100644 --- a/sysdeps/x86_64/fpu/multiarch/Makefile +++ b/sysdeps/x86_64/fpu/multiarch/Makefile @@ -10,6 +10,7 @@ CFLAGS-s_expm1-fma.c = -mfma -mavx2 CFLAGS-s_log1p-fma.c = -mfma -mavx2 CFLAGS-s_sin-fma.c = -mfma -mavx2 CFLAGS-s_tan-fma.c = -mfma -mavx2 +CFLAGS-s_tanh-fma.c = -mfma -mavx2 CFLAGS-s_sincos-fma.c = -mfma -mavx2 CFLAGS-s_exp10m1f-fma.c = -mfma -mavx2 CFLAGS-s_exp2m1f-fma.c = -mfma -mavx2 @@ -96,6 +97,7 @@ libm-sysdep_routines += \ s_sinf-sse2 \ s_tan-avx \ s_tan-fma \ + s_tanh-fma \ s_trunc-sse4_1 \ s_truncf-sse4_1 \ # libm-sysdep_routines diff --git a/sysdeps/x86_64/fpu/multiarch/s_tanh-fma.c b/sysdeps/x86_64/fpu/multiarch/s_tanh-fma.c new file mode 100644 index 0000000000..1b808b1227 --- /dev/null +++ b/sysdeps/x86_64/fpu/multiarch/s_tanh-fma.c @@ -0,0 +1,11 @@ +#define __tanh __tanh_fma +#define __expm1 __expm1_fma + +/* NB: __expm1 may be expanded to __expm1_fma in the following + prototypes. */ +extern long double __expm1l (long double); +extern long double __expm1f128 (long double); + +#define SECTION __attribute__ ((section (".text.fma"))) + +#include <sysdeps/ieee754/dbl-64/s_tanh.c> diff --git a/sysdeps/x86_64/fpu/multiarch/s_tanh.c b/sysdeps/x86_64/fpu/multiarch/s_tanh.c new file mode 100644 index 0000000000..5539b6c61c --- /dev/null +++ b/sysdeps/x86_64/fpu/multiarch/s_tanh.c @@ -0,0 +1,31 @@ +/* Multiple versions of tanh. + Copyright (C) 2025 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdeps/x86/isa-level.h> +#if MINIMUM_X86_ISA_LEVEL < AVX2_X86_ISA_LEVEL + +extern double __redirect_tanh (double); + +# define SYMBOL_NAME tanh +# include "ifunc-fma.h" + +libc_ifunc_redirected (__redirect_tanh, __tanh, IFUNC_SELECTOR ()); + +# define __tanh __tanh_sse2 +#endif +#include <sysdeps/ieee754/dbl-64/s_tanh.c> |