[PATCH] D97847: Use LoopNest as the primary object on which LoopInterchange operates

[Ta-Wei Tu via Phabricator via llvm-commits]

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Replace the usage of `LoopList` in `LoopInterchange` completely with `LoopNest`.
Due to this change, we no longer need to explicitly pass `OuterLoop` and `InnerLoop` to `processLoop` as in D96650 <https://reviews.llvm.org/D96650>.
Also, make `interchangeNestedLoops` a member function of `LoopNest` so that `LoopNestAnalysis` is preserved.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97847

Files:
  llvm/include/llvm/Analysis/LoopNestAnalysis.h
  llvm/lib/Transforms/Scalar/LoopInterchange.cpp

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