[llvm] [VPlan] Impl VPlan-based pattern match for ExtendedRed and MulAccRed (PR #113903)

[Elvis Wang via llvm-commits]

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@@ -596,13 +598,15 @@ class VPRecipeWithIRFlags : public VPSingleDefRecipe {
     DisjointFlagsTy(bool IsDisjoint) : IsDisjoint(IsDisjoint) {}
   };
 
+  struct NonNegFlagsTy {
+    char NonNeg : 1;
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ElvisWang123 wrote:

This is just move from private to public. Renaming will cause unrelate changes in this patch.
Perhaps we can fix this in follow-up patch.

https://github.com/llvm/llvm-project/pull/113903