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authorWilco Dijkstra <wdijkstr@arm.com>2020-08-28 17:51:40 +0100
committerWilco Dijkstra <wdijkstr@arm.com>2020-10-14 17:29:12 +0100
commitb915da29dab5d8c6b9cdb1ee6fdc1e0ec6ef39e1 (patch)
tree5f060261fc04bcfe189333dfbc315c78285d005e /sysdeps/i386
parent4bd28df0b0598c380f4ae63b96eaadc782c9d709 (diff)
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AArch64: Improve backwards memmove performance
On some microarchitectures performance of the backwards memmove improves if
the stores use STR with decreasing addresses.  So change the memmove loop
in memcpy_advsimd.S to use 2x STR rather than STP.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit bd394d131c10c9ec22c6424197b79410042eed99)
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