[llvm] [LoopInterchange] Swap preheader contents before rebuilding LCSSA (PR #218468)

[Madhur Amilkanthwar via llvm-commits]

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@@ -0,0 +1,103 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=loop-interchange -cache-line-size=64 -verify-dom-info -verify-loop-info -verify-scev -verify-loop-lcssa -S | FileCheck %s
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madhur13490 wrote:

I don't think all flags are needed. They would give false sense that they are needed. Let's have minimal set of flags.

https://github.com/llvm/llvm-project/pull/218468