[llvm] [LV] Vectorize selecting last IV of min/max element. (PR #141431)

[via llvm-commits]

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@@ -2006,6 +2007,10 @@ class LLVM_ABI_FOR_TEST VPHeaderPHIRecipe : public VPSingleDefRecipe,
     return B && B->getVPDefID() >= VPRecipeBase::VPFirstHeaderPHISC &&
            B->getVPDefID() <= VPRecipeBase::VPLastHeaderPHISC;
   }
+  static inline bool classof(const VPSingleDefRecipe *B) {
+    return B->getVPDefID() >= VPDef::VPFirstHeaderPHISC &&
+           B->getVPDefID() <= VPDef::VPLastHeaderPHISC;
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ayalz wrote:

Can this interval condition checking a recipe's VPDefID be implemented once and reused thrice?

https://github.com/llvm/llvm-project/pull/141431