[llvm] [ADT] Make Zippy more iterator-like for lifetime safety (PR #112441)

[via llvm-commits]

github-actions[bot] wrote:

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``````````bash
git-clang-format --diff 23da16933b8ad48a967905369f576e5ec45b985f 75eb8c747a41c5e9a0275def57e534083d973921 --extensions h,cpp -- llvm/include/llvm/ADT/STLExtras.h llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp llvm/unittests/ADT/IteratorTest.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/include/llvm/ADT/STLExtras.h b/llvm/include/llvm/ADT/STLExtras.h
index 3692b199c9..672b068f9f 100644
--- a/llvm/include/llvm/ADT/STLExtras.h
+++ b/llvm/include/llvm/ADT/STLExtras.h
@@ -707,7 +707,8 @@ struct zip_common : public zip_traits<ZipType, ReferenceTupleType, Iters...> {
   mutable std::optional<value_type> value;
 
 protected:
-  template <size_t... Ns> const value_type &deref(std::index_sequence<Ns...>) const {
+  template <size_t... Ns>
+  const value_type &deref(std::index_sequence<Ns...>) const {
     value.emplace(*std::get<Ns>(iterators)...);
     return *value;
   }

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https://github.com/llvm/llvm-project/pull/112441