[llvm] [LoopFusion] Remove DT edge from Extiblock to ExitBlockSuc (PR #193641)

[Ehsan Amiri via llvm-commits]

amehsan wrote:

> you need a different testcase that doesn't have other problems before the code that you have fixed.

we can probably skip the extra peeling. That is unlikely to be related to this problem. 

You may be able to fix the issue of two different guards quite easily: Just modify the condition on one of the loop guards so it looks like the other. I suspect that will work fine to expose the problem and then we can merge this code.

https://github.com/llvm/llvm-project/pull/193641