[llvm-branch-commits] [llvm] [CodeGen][NPM] dump slot index info with -debug while running LiveIntervals (PR #173488)

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paperchalice wrote:

Could we introduce a pass instrumentation for usages like this? It looks like some extra work is needed, because `PassInstrumentation` doesn't reference pass managers.

https://github.com/llvm/llvm-project/pull/173488