Mryange opened a new pull request, #38759: URL: https://github.com/apache/doris/pull/38759
## Proposed changes The main issue is that _mm_movemask_epi8 does not have a one-to-one corresponding instruction on ARM. Testing shows that it performs worse compared to using memcmp, which allows the compiler to generate the corresponding ARM instructions. The following tests were conducted on ARM. -------------------------------------------------------------- Benchmark Time CPU Iterations -------------------------------------------------------------- BM_memequal16_sse 3.77 ns 3.77 ns 743238946 BM_memequal16_orgin 2.11 ns 2.11 ns 1000000000 <!--Describe your changes.--> -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
