[llvm-branch-commits] [llvm] [2/3][AMDGPU] Physical register tracking in GCN trackers. (PR #184275)

[Dhruva Chakrabarti via llvm-branch-commits]

dhruvachak wrote:

Rebased. Since the old base was quite old, there were many conflicts. The rebase was done after squashing all the individual commits. 

Since https://github.com/llvm/llvm-project/pull/169616 introduced multi-level controls for enabling useGCNTrackers, I think it is better to enable physical register tracking whenever GCNRPTracker is used. I think it no more makes sense to have physical register tracking depend on the global overriding amdgpu-use-amdgpu-trackers option. This change has now been made in this PR.

https://github.com/llvm/llvm-project/pull/184275