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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-08-16 08:43:35 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-08-16 08:43:48 -0700 |
| commit | 24a2e6588d2e0c91b4003878b0625d4a9360e8f3 (patch) | |
| tree | 11b91098943a676d40fdec100ac8cd3f1ada8a11 /sysdeps/x86_64/fpu/multiarch/Makefile | |
| parent | 403143e1df85dadd374f304bd891be0cd7573e3b (diff) | |
| download | glibc-24a2e6588d2e0c91b4003878b0625d4a9360e8f3.tar.gz glibc-24a2e6588d2e0c91b4003878b0625d4a9360e8f3.tar.xz glibc-24a2e6588d2e0c91b4003878b0625d4a9360e8f3.zip | |
x86-64: Optimize e_expf with FMA [BZ #21912]
FMA optimized e_expf improves performance by more than 50% on Skylake. [BZ #21912] * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): Add e_expf-fma. * sysdeps/x86_64/fpu/multiarch/e_expf-fma.S: New file. * sysdeps/x86_64/fpu/multiarch/e_expf.c: Likewise. * sysdeps/x86_64/fpu/multiarch/ifunc-fma.h: Likewise.
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/Makefile')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/Makefile b/sysdeps/x86_64/fpu/multiarch/Makefile index 9daf2cf205..1b61795aff 100644 --- a/sysdeps/x86_64/fpu/multiarch/Makefile +++ b/sysdeps/x86_64/fpu/multiarch/Makefile @@ -35,6 +35,9 @@ CFLAGS-slowpow-fma.c = -mfma -mavx2 CFLAGS-s_sin-fma.c = -mfma -mavx2 CFLAGS-s_tan-fma.c = -mfma -mavx2 +# e_expf-fma.S implements both FMA and SSE2 versions of e_expf. +libm-sysdep_routines += e_expf-fma + libm-sysdep_routines += e_exp-fma4 e_log-fma4 e_pow-fma4 s_atan-fma4 \ e_asin-fma4 e_atan2-fma4 s_sin-fma4 s_tan-fma4 \ mplog-fma4 mpa-fma4 slowexp-fma4 slowpow-fma4 \ |