[llvm-branch-commits] [clang] [flang] [flang] Add -f[no-]version-loops-for-trip-count and enable it at -O3 (2/2) (PR #231207)

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

Reviewed at commit c17cf745655cdbbe19a03cbd641d7729632371f3

All my concerns are addressed. LGTM once [the parent PR](https://github.com/llvm/llvm-project/pull/231205) is ready.

https://github.com/llvm/llvm-project/pull/231207