llvm-project

f646d766 - [LV] Extend test coverage for tail-folding with recurrences.

[LV] Extend test coverage for tail-folding with recurrences. Add additional test coverage for tail-folding loops with first-order recurrences and users outside the loop. Test a combination of vectorization factors and interleave counts. Also update check lines in reduction-order.ll and adjust naming for clarity. This adds extra test coverage for https://github.com/llvm/llvm-project/pull/149042.