[clang] [llvm] [AMDGPU] Change `scale_sel` to be 4 bits (PR #157900)

[Shilei Tian via cfe-commits]

https://github.com/shiltian ready_for_review 
https://github.com/llvm/llvm-project/pull/157900
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits