[llvm] [VPlan] Optimize FindLast of (binop %IV, live-in) by sinking. (PR #183911)

[via llvm-commits]

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@@ -5742,11 +5755,15 @@ void VPlanTransforms::optimizeFindIVReductions(VPlan &Plan,
                                     m_VPValue(FalseVal))))
       continue;
 
-    // The non-phi operand of the select is the IV.
+    // The non-phi operand of the select is the IV or an expression of IV.
     assert(is_contained(CondSelect->getDefiningRecipe()->operands(), PhiR));
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ayalz wrote:

Independent: missing error message.

https://github.com/llvm/llvm-project/pull/183911