[llvm] [IR] Add elementwise modifier to atomic loads (PR #204556)

[Yonah Goldberg via llvm-commits]

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@@ -201,9 +202,13 @@ class LoadInst : public UnaryInstruction {
                     InsertPosition InsertBefore);
   LLVM_ABI LoadInst(Type *Ty, Value *Ptr, const Twine &NameStr, bool isVolatile,
                     Align Align, InsertPosition InsertBefore = nullptr);
+  LLVM_ABI LoadInst(Type *Ty, Value *Ptr, const Twine &NameStr, bool isVolatile,
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YonahGoldberg wrote:

What is this for?

https://github.com/llvm/llvm-project/pull/204556