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authorXuelei Zhang <zhangxuelei4@huawei.com>2019-12-19 14:53:29 +0000
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-12-19 16:31:04 -0300
commita7611806d5f4163656a2f5d21d349b5e7c4170e0 (patch)
tree70e6f49512436ef6d8c03bb79f08f9b2c3140dc4 /sysdeps/unix/sysv/linux/aarch64/cpu-features.h
parent2911cb68ed3d6c515ad1979237e74e1fefab3674 (diff)
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aarch64: Optimized implementation of memrchr
Considering the excellent performance of memchr.S on glibc 2.30, the
same algorithm is used to find chrin. Compared to memrchr.c, this
method with memrchr.S achieves an average performance improvement
of 58% based on benchtest and its extension cases.

Checked on aarch64-linux-gnu.

Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
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