[llvm] [VPlan] Run narrowInterleaveGroups during general VPlan optimizations. (PR #149706)

[via llvm-commits]

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@@ -4047,14 +4049,14 @@ static bool canNarrowLoad(VPWidenRecipe *WideMember0, unsigned OpIdx,
   return false;
 }
 
-/// Returns true if \p IR is a full interleave group with factor and number of
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ayalz wrote:

(Independent) `\p IR` should be `\p InterleaveR`

https://github.com/llvm/llvm-project/pull/149706