[llvm] [NFC][LoopFuse] Regenerate LoopFusion tests using UTC (PR #146902)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Can you please double check that the output looks reasonable? Not all of these tests are UTC compatible or need additional work.

https://github.com/llvm/llvm-project/pull/146902