[llvm] Adding the support for vectorization of loops with load based tripcount (PR #209390)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

I agree with David, and doing this in LVerLICM seems like the better approach -- as such, the approach in the current patch is a no-go I think? Will look at your LVerLICM patch.

https://github.com/llvm/llvm-project/pull/209390