[llvm] [LLVM] remove redundant uses of dyn_cast (NFC) (PR #189105)

[Nikita Popov via llvm-commits]

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@@ -1390,7 +1390,7 @@ InductionDescriptor::InductionDescriptor(Value *Start, InductionKind K,
 
 ConstantInt *InductionDescriptor::getConstIntStepValue() const {
   if (isa<SCEVConstant>(Step))
-    return dyn_cast<ConstantInt>(cast<SCEVConstant>(Step)->getValue());
+    return cast<SCEVConstant>(Step)->getValue();
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nikic wrote:

Replace isa + cast with dyn_cast?

https://github.com/llvm/llvm-project/pull/189105