[llvm] [AMDGPU] Generate waterfall for calls with SGPR(inreg) argument (PR #146997)

[Juan Manuel Martinez Caamaño via llvm-commits]

https://github.com/jmmartinez commented:

Sorry for coming back after such a long time.

Could you rebase the PR over main and mark the remarks that you've addressed as "solved" ?

https://github.com/llvm/llvm-project/pull/146997