[clang] [llvm] [Clang][LLVM] Implement single-multi vectors MOP4{A/S} (PR #128854)

[Jonathan Thackray via cfe-commits]

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@@ -600,35 +624,65 @@ class sme_quarter_outer_product_i16_i32<bit u0, bit N, bit M, bit subtr, Registe
   let Constraints = "$ZAda = $_ZAda";
 }
 
-multiclass sme_quarter_outer_product_i8_i32<bit zn_u, bit zm_u, bit subtr, string mnemonic>{
+multiclass sme_quarter_outer_product_i8_i32<bit zn_u, bit zm_u, bit subtr, string mnemonic, string op>{
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jthackray wrote:

Add `// Single vectors` similar to lower down in the file.

https://github.com/llvm/llvm-project/pull/128854