[llvm] [LoopInterchange] Do not interchange guarded imperfect loop nests (PR #201504)

[Ryotaro Kasuga via llvm-commits]

================
@@ -0,0 +1,67 @@
+; RUN: opt < %s -passes=loop-interchange -cache-line-size=64 \
----------------
kasuga-fj wrote:

```suggestion
; RUN: opt < %s -passes=loop-interchange -loop-interchange-profitabilities=ignore \
```

The test becomes more robust by effectively disabling the profitability check.

https://github.com/llvm/llvm-project/pull/201504