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AArch64: Optimize memcmp
authorWilco Dijkstra <wdijkstr@arm.com>
Thu, 2 Dec 2021 18:30:55 +0000 (18:30 +0000)
committerWilco Dijkstra <wilco.dijkstra@arm.com>
Tue, 9 Apr 2024 17:28:20 +0000 (18:28 +0100)
commitea547d896decb172a5687c57292148809a79a6eb
tree11dbb2952ed3872288173e2659c64defdbc10cabtree | snapshot
parentce54f7882803b24a39153d4520f8a54c47a1f698commit | diff
AArch64: Optimize memcmp

Rewrite memcmp to improve performance. On small and medium inputs performance
is 10-20% better. Large inputs use a SIMD loop processing 64 bytes per
iteration, which is 30-50% faster depending on the size.

Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit b51eb35c572b015641f03e3682c303f7631279b7)
sysdeps/aarch64/memcmp.S diff | blob | blame | history
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