diff --git a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index 17f8e30..7e402eb 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -1359,11 +1359,10 @@
       if (Instruction *R = FoldOpIntoSelect(I, SI))
         return R;
 
-  if (Constant *Op1C = dyn_cast<Constant>(Op1)) {
+  if (isa<Constant>(Op1))
     if (SelectInst *SI = dyn_cast<SelectInst>(Op0))
       if (Instruction *R = FoldOpIntoSelect(I, SI))
         return R;
-  }
 
   if (I.isFast()) {
     Value *X, *Y;