llvm-project

37e03b56 - Revert "[PGO] Add `llvm.loop.estimated_trip_count` metadata" (#151585)

Revert "[PGO] Add `llvm.loop.estimated_trip_count` metadata" (#151585) Reverts llvm/llvm-project#148758 [As requested.](https://github.com/llvm/llvm-project/pull/148758#pullrequestreview-3076627201)