[llvm] [TableGen] Improve handling for dag op names (PR #149248)

[Rahul Joshi via llvm-commits]

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@@ -1310,7 +1319,7 @@ const Init *BinOpInit::Fold(const Record *CurRec) const {
       SmallVector<std::pair<const Init *, const StringInit *>, 8> Args;
       llvm::append_range(Args, LHSs->getArgAndNames());
       llvm::append_range(Args, RHSs->getArgAndNames());
-      return DagInit::get(Op, Args);
+      return DagInit::get(Op, LHSs->getName(), Args);
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jurahul wrote:

See comment below, should we choose the non-empty name if LHS name is empty but LHS not?

https://github.com/llvm/llvm-project/pull/149248