Hi Chao-ying, Great to hear from you again!
> We just wonder if you can sponsor me to become a MIPS maintainer, > because Wave Computing would like to continue supporting MIPS > architecture in GCC, although there are very few patches for MIPS > recently. Any feedback is welcome. Well, it's up to the GCC steering committee really to appoint maintainers <https://gcc.gnu.org/steering.html>, however you can post patches and help with getting reviews through right away. There hasn't been much traffic with the MIPS port recently, but there has been some and it always helps to have someone provide input. Maciej