Thanks for the answer, my source file is complex，it is not convenient attach, because it is company code. According to your experience， what is the reason about it?
Martin Liška <mli...@suse.cz> 于2022年3月3日周四 21:48写道： > > On 3/3/22 14:41, Dongjiu Geng via Gcc wrote: > > Hi, > > My program does not use CRC instructions，but I find the compiled > > binary has much difference between using "-march=armv8-a+crc" and > > using "-march=armv8-a". Even stranger, when I use > > "-march=armv8-a+crc", I find my compiled binary can not run. but when > > I change -O2 to -O0 based on "-march=armv8-a+crc", it can run. I do > > not know what is the reason.. can you answer it? Thanks. > > Hello. > > Please report bug here: > https://gcc.gnu.org/bugzilla/ > > and attach a pre-processed source file: > https://gcc.gnu.org/bugs/ > > Martin
