[llvm] [NFC][IR] Add CreateCountTrailingZeroElems helper (PR #106711)

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``````````bash
git-clang-format --diff 3d2fd31c8f362b1054985197a65194fcbbca57bb 092349da1cebf1ebf8ffecc6dbe5b190b45dd0f5 --extensions cpp,h -- llvm/include/llvm/IR/IRBuilder.h llvm/lib/Transforms/Vectorize/LoopIdiomVectorize.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/LoopIdiomVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopIdiomVectorize.cpp
index 45c0eae29c..7af7408ed6 100644
--- a/llvm/lib/Transforms/Vectorize/LoopIdiomVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopIdiomVectorize.cpp
@@ -470,8 +470,7 @@ Value *LoopIdiomVectorize::createMaskedFindMismatch(
   VectorFoundIndex->addIncoming(VectorIndexPhi, VectorLoopStartBlock);
 
   Value *PredMatchCmp = Builder.CreateAnd(LastLoopPred, FoundPred);
-  Value *Ctz =
-      Builder.CreateCountTrailingZeroElems(ResType, PredMatchCmp);
+  Value *Ctz = Builder.CreateCountTrailingZeroElems(ResType, PredMatchCmp);
   Ctz = Builder.CreateZExt(Ctz, I64Type);
   Value *VectorLoopRes64 = Builder.CreateAdd(VectorFoundIndex, Ctz, "",
                                              /*HasNUW=*/true, /*HasNSW=*/true);

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https://github.com/llvm/llvm-project/pull/106711