MySQL Bugs: #110445: Optimize my

Bug #110445	Optimize my_convert for Arm64
Submitted:	21 Mar 2023 3:11	Modified:	21 Mar 2023 6:30
Reporter:	Cai Yibo (OCA)	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Server: Optimizer	Severity:	S5 (Performance)
Version:	8.0	OS:	Linux
Assigned to:		CPU Architecture:	ARM (aarch64)
Tags:	Contrbution

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Description:
my_convert() copies ascii string in 4 bytes on x86, but not Arm. [1]
We can enable the optimized code path for Arm64.

[1] https://github.com/mysql/mysql-server/blob/8.0/strings/ctype.cc#L922-L934

How to repeat:
N/A

patch (*) I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

Contribution: 0001-Optimize-my_convert-for-Arm64.patch (text/x-patch), 1.41 KiB.

Hello Cai Yibo,

Thank you for the report and contribution.

regards,
Umesh