[llvm] [NFC] Use references to avoid copying (PR #110462)

[Phoebe Wang via llvm-commits]

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@@ -256,7 +256,7 @@ void IntrinsicEmitter::EmitIntrinsicToOverloadTable(
 static constexpr uint8_t OTable[] = {
   0
   )";
-  for (auto [I, Int] : enumerate(Ints)) {
+  for (const auto [I, Int] : enumerate(Ints)) {
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phoebewang wrote:

Given it is just a copy, do we still need `const`?

https://github.com/llvm/llvm-project/pull/110462