[clang] [llvm] [Clang][LLVM] Implement single-single vectors MOP4{A/S} (PR #127797)

[via cfe-commits]

================
@@ -376,6 +376,24 @@ let SMETargetGuard = "sme2" in {
 // Outer product and accumulate/subtract
 //
 
+multiclass MOP4<string name, string n, string t, string i, string wide, list<ImmCheck> checks> {
----------------
Lukacma wrote:

This is just my suggestion for names, feel free to suggest different one. Also make sure the naming is consistent across all 3 multiclasses for greater clarity

https://github.com/llvm/llvm-project/pull/127797