[llvm] [LoopInterchange] Bail out if function that may diverge is called (PR #201348)

[Ryotaro Kasuga via llvm-commits]

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kasuga-fj wrote:

It is closed. In this pseudo code, the curly braces for the i-loop and the if-statement are omitted.

https://github.com/llvm/llvm-project/pull/201348