[llvm] [NFC][AArch64] Refactor AArch64LoopIdiomTransform in preparation for more idioms (PR #78471)

[David Sherwood via llvm-commits]

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@@ -187,6 +180,38 @@ AArch64LoopIdiomTransformPass::run(Loop &L, LoopAnalysisManager &AM,
 //
 //===----------------------------------------------------------------------===//
 
+struct MemCompareIdiom {
+private:
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david-arm wrote:

We could, but I saw lots of other places in LLVM where we use struct for smaller tasks like this so I thought maybe I should do the same. To be honest, I'm not entirely sure what the difference is. I'm happy to change it to class if that brings benefits!

https://github.com/llvm/llvm-project/pull/78471