Hi, About the patch http://review.android.git.linaro.org/#/c/15529/, we got an issue report from member. It could improve the micro benchmark but hurt general benchmark actually. Here is their test result:
bionic-benchmarks32 BM_string_memcpy: Size AOSP Linaro Perf Improvement 8 450.7 329.5 -37% 64 1715.7 2225.3 23% 512 3100.7 4253.0 27% 1K 3271.8 4652.3 30% 8K 2460.9 3174.7 22% 16K 2267.4 2953.2 23% 32K 2222.9 2800.7 21% 64K 2204.3 2640.1 17%
without patch with patch perf delta Quadrant mem 3400 2100 -38% GeekBench3 single-core 436 260 -40% multi-core 434 358 -18%
I am wondering whether this is an known issue or not for this list. Thanks in advance.
Regards Yin, Fengwei