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authorH.J. Lu <hjl.tools@gmail.com>2017-08-16 08:43:35 -0700
committerH.J. Lu <hjl.tools@gmail.com>2017-08-16 08:46:05 -0700
commit6d5f5b16bc4bd3945e138509d7986a5231ab5ee6 (patch)
treeadbaec0e7ea9b1ba01b4cff58431e25bd3d0d091 /sysdeps/unix/sysv/sysv4/linux/bind.S
parentce3e7f4136a9f5943328c74511542834ca05811b (diff)
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x86-64: Optimize e_expf with FMA [BZ #21912] hjl/fma/2.26
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.

(cherry picked from commit 24a2e6588d2e0c91b4003878b0625d4a9360e8f3)
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