[InstCombine] use 'auto' with 'dyn_cast'; NFC

llvm-svn: 319067

1 files changed, 2 insertions, 3 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index a454653a3a1..6c99007475c 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -610,12 +610,11 @@ static Instruction *foldInsSequenceIntoBroadcast(InsertElementInst &InsElt) {
   // Walk the chain backwards, keeping track of which indices we inserted into,
   // until we hit something that isn't an insert of the splatted value.
   while (CurrIE) {
-    ConstantInt *Idx = dyn_cast<ConstantInt>(CurrIE->getOperand(2));
+    auto *Idx = dyn_cast<ConstantInt>(CurrIE->getOperand(2));
     if (!Idx || CurrIE->getOperand(1) != SplatVal)
       return nullptr;
 
-    InsertElementInst *NextIE =
-      dyn_cast<InsertElementInst>(CurrIE->getOperand(0));
+    auto *NextIE = dyn_cast<InsertElementInst>(CurrIE->getOperand(0));
     // Check none of the intermediate steps have any additional uses, except
     // for the root insertelement instruction, which can be re-used, if it
     // inserts at position 0.