[llvm] [AMDGPU][SIInsertWaitcnts] Do not add s_waitcnt when the counters are known to be 0 already (PR #65735)

[Juan Manuel Martinez Caamaño via llvm-commits]

jmmartinez wrote:

@kzhuravl that's awesome! Thanks for the update.

However, I am not able to rebase and address Jay's review since I don't have a PC available (for the next 6 months).

If somebody else could move the PR forward it would be great. Otherwise I'll finish it when I'm back.



https://github.com/llvm/llvm-project/pull/65735