[llvm] [ValueTracking] Use Instruction instead of Operator in matchSimpleRecurrence. (PR #74678)

[Nikita Popov via llvm-commits]

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@@ -8024,7 +8024,7 @@ bool llvm::matchSimpleRecurrence(const PHINode *P, BinaryOperator *&BO,
   for (unsigned i = 0; i != 2; ++i) {
     Value *L = P->getIncomingValue(i);
     Value *R = P->getIncomingValue(!i);
-    Operator *LU = dyn_cast<Operator>(L);
+    auto *LU = dyn_cast<Instruction>(L);
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nikic wrote:

You could directly cast to `BinaryOperator` here and then save the `cast<BinaryOperator>(LU)` below.

https://github.com/llvm/llvm-project/pull/74678