[llvm] [AMDGPU][GlobalIsel] RegBankLegalizeRules for amdgcn_s_quadmask (PR #202698)

[Syadus Sefat via llvm-commits]

mssefat wrote:

> This was done by #201898, although there needs to be a fix implemented to clean up divergent rules

Ah, did not notice that. I will close it.

https://github.com/llvm/llvm-project/pull/202698