[llvm] [VPlan] Introduce VPlanConstantFolder (PR #125365)

[Ramkumar Ramachandra via llvm-commits]

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@@ -25,7 +25,7 @@
 #define LLVM_TRANSFORMS_VECTORIZE_LOOPVECTORIZATIONPLANNER_H
 
 #include "VPlan.h"
-#include "llvm/ADT/SmallSet.h"
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artagnon wrote:

Just thought I'd clean up unused includes when making a change to the file: can revert if undesired?

https://github.com/llvm/llvm-project/pull/125365