[llvm] [LLVM] treat `@llvm.ssub.sat` the same as `@llvm.aarch64.neon.sqsub` (PR #140454)

[Folkert de Vries via llvm-commits]

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@@ -9861,14 +9843,15 @@ multiclass SIMDIndexedLongSD<bit U, bits<4> opc, string asm,
 }
 
 multiclass SIMDIndexedLongSQDMLXSDTied<bit U, bits<4> opc, string asm,
-                                       SDPatternOperator Accum> {
+                                       SDPatternOperator VecAcc,
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folkertdev wrote:

I'm not really sure what to write here, so please suggest or push something that you think is helpful.

https://github.com/llvm/llvm-project/pull/140454