tree 1a1ca6d025fda8448d2010f0ef108ddb3b8cfe05
parent d103c301949c9ca75f5a2c90c253498ed797502d
author Yingshiuan Pan <yingshiuan.pan@linaro.org> 1429758479 +0100
committer Steve Kondik <steve@cyngn.com> 1446327652 -0700

libc: arm: add optimized memchr implementation

This optimization is extracted from cortex-strings and bionic-ized,
and applied to arm-v7a cpus (a7, a9, a15, a53, denver, krait).

I ran stringbench[1] on ARM Juno, this optimization could outperform
origin C implementation by 77%.

[1] https://android.git.linaro.org/gitweb/platform/external/stringbench.git

Change-Id: I1c3fb0c89ce2b3ee7e44f492367b6caf6db58ccf
Signed-off-by: Yingshiuan Pan <yingshiuan.pan@linaro.org>