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

[Yonah Goldberg via llvm-commits]

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@@ -8961,8 +8967,13 @@ int LLParser::parseLoad(Instruction *&Inst, PerFunctionState &PFS) {
 
   if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
     return error(Loc, "load operand must be a pointer to a first class type");
+
+  if (IsElementwise && !isAtomic)
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YonahGoldberg wrote:

Are we forgetting to make sure it's a vector type?

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