[clang] [llvm] [LV] Mask off possibly aliasing vector lanes (PR #100579)

[Sam Tebbs via cfe-commits]

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@@ -448,6 +448,20 @@ struct PointerDiffInfo {
         NeedsFreeze(NeedsFreeze) {}
 };
 
+/// A pair of pointers that could overlap across a loop iteration.
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SamTebbs33 wrote:

That sounds good to me. I originally put it here so it was next to the related `PointerDiffInfo`

https://github.com/llvm/llvm-project/pull/100579