[llvm] [PGO] Don't unconditionally request BBInfo in verifyFuncBFI() (PR #140804)

[Mircea Trofin via llvm-commits]

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

lgtm

one alternative would be to DCE unreachable BBs as a prelude to instrumentation. But this patch could be OK too.

I'm curious, how did we end up with unreachable BBs at this stage anyway? The early inliner?

https://github.com/llvm/llvm-project/pull/140804