[llvm] [Transform] Clean up strlen loop idiom (PR #132421)

[Henry Jiang via llvm-commits]

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@@ -1540,7 +1530,8 @@ static Value *matchCondition(BranchInst *BI, BasicBlock *LoopEntry,
   if (!Cond)
     return nullptr;
 
-  if (!isZeroConstant(Cond->getOperand(1)))
+  const ConstantInt *CmpZero = dyn_cast<ConstantInt>(Cond->getOperand(1));
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mustartt wrote:

Updated to use `auto`.

https://github.com/llvm/llvm-project/pull/132421