[llvm] [llvm][NVPTX] Fix quadratic runtime in ProxyRegErasure (PR #105730)

[Justin Fargnoli via llvm-commits]

https://github.com/justinfargnoli approved this pull request.

LGTM!

Please wait for another community member to approve the MR before merging. 

https://github.com/llvm/llvm-project/pull/105730