[llvm] [Passes] Move LoopInterchange into optimization pipeline (PR #145503)

[Ryotaro Kasuga via llvm-commits]

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@@ -1547,6 +1544,10 @@ PassBuilder::buildModuleOptimizationPipeline(OptimizationLevel Level,
   //        this may need to be revisited once we run GVN before loop deletion
   //        in the simplification pipeline.
   LPM.addPass(LoopDeletionPass());
+
+  if (PTO.LoopInterchange)
+    LPM.addPass(LoopInterchangePass());
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kasuga-fj wrote:

I'm not sure where LoopInterchange should be placed within the optimization pipeline...

https://github.com/llvm/llvm-project/pull/145503