[llvm] [AMDGPU][SDAG] Support source modifiers as integer on select (PR #147325)

[Chris Jackson via llvm-commits]

https://github.com/chrisjbris commented:

ty - However I'm still struggling with i64. The DAG produces the correct operations but then these are sometimes split into v2i32.

https://github.com/llvm/llvm-project/pull/147325