[llvm] [NFC] LLVM reduce: remove unused variable (PR #133584)

[Matt Arsenault via llvm-commits]

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@@ -108,7 +108,7 @@ static void replaceFunctionCalls(Function *OldF, Function *NewF) {
     NewCI->setCallingConv(NewF->getCallingConv());
     NewCI->setAttributes(CI->getAttributes());
 
-    if (auto *FPOp = dyn_cast<FPMathOperator>(NewCI))
+    if (isa<FPMathOperator>(NewCI))
       NewCI->setFastMathFlags(CI->getFastMathFlags());
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arsenm wrote:

Use FPOp instead of NewCI 

https://github.com/llvm/llvm-project/pull/133584