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[Bug math/21912] Optimize float math functions with FMA

--- Comment #19 from cvs-commit at gcc dot <cvs-commit at gcc dot> ---
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The branch, hjl/expf/master has been created
        at  0575d372670fd8b06c7366a29c133581f0c696f6 (commit)

- Log -----------------------------------------------------------------;h=0575d372670fd8b06c7366a29c133581f0c696f6

commit 0575d372670fd8b06c7366a29c133581f0c696f6
Author: H.J. Lu <>
Date:   Tue Aug 15 08:45:34 2017 -0700

    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 and 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.


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