| commit | 1b214630ce6f7e0099b8b6f87246246739b079cf | |
| author | H.J. Lu <hjl.tools@gmail.com> | |
| Fri, 11 Aug 2023 15:04:08 +0000 (11 08:04 -0700) | ||
| committer | H.J. Lu <hjl.tools@gmail.com> | |
| Mon, 14 Aug 2023 15:14:19 +0000 (14 08:14 -0700) | ||
| tree | bed526aa9ce38f6c09e144cf27fc24128b0b12c0 | treesnapshot (tar.gz zip) |
| parent | dd2794d6680d322754464448a25916ee199ce678 | commitdiff |
x86_64: Add expm1 with FMA
On Skylake, it improves expm1 bench performance by:
Before After Improvement
max 70.204 68.054 3%
min 20.709 16.2 22%
mean 22.1221 16.7367 24%
NB: Add
extern long double __expm1l (long double);
extern long double __expm1f128 (long double);
for __typeof (__expm1l) and __typeof (__expm1f128) when __expm1 is
defined since __expm1 may be expanded in their declarations which
causes the build failure.
On Skylake, it improves expm1 bench performance by:
Before After Improvement
max 70.204 68.054 3%
min 20.709 16.2 22%
mean 22.1221 16.7367 24%
NB: Add
extern long double __expm1l (long double);
extern long double __expm1f128 (long double);
for __typeof (__expm1l) and __typeof (__expm1f128) when __expm1 is
defined since __expm1 may be expanded in their declarations which
causes the build failure.
| sysdeps/ieee754/dbl-64/s_expm1.c | diffblobblamehistory | |
| sysdeps/x86_64/fpu/multiarch/Makefile | diffblobblamehistory | |
| sysdeps/x86_64/fpu/multiarch/s_expm1-fma.c | [new file with mode: 0644] | blob |
| sysdeps/x86_64/fpu/multiarch/s_expm1.c | [new file with mode: 0644] | blob |