[llvm] [AMDGPU] Add live-through register set printing to GCNRegPressurePrinter pass. (PR #71096)

[Valery Pykhtin via llvm-commits]

vpykhtin wrote:

> BTW, what about AGPR pressure?

Should be added as a third column, but I suggest doing it in a separate PR.

https://github.com/llvm/llvm-project/pull/71096