[clang] [clang] Update typechecking of builtin elementwise ternary math operators (PR #155620)

[via cfe-commits]

================
@@ -15905,13 +15957,11 @@ Sema::BuiltinVectorMath(CallExpr *TheCall,
 
   SourceLocation LocA = Args[0]->getBeginLoc();
   QualType TyA = Args[0]->getType();
-  QualType TyB = Args[1]->getType();
 
   if (checkMathBuiltinElementType(*this, LocA, TyA, ArgTyRestr, 1))
     return std::nullopt;
 
-  if (!Context.hasSameUnqualifiedType(TyA, TyB)) {
-    Diag(LocA, diag::err_typecheck_call_different_arg_types) << TyA << TyB;
+  if (checkBuiltinVectorMathArgTypes(*this, 2, Args)) {
     return std::nullopt;
   }
----------------
Sirraide wrote:

```suggestion
  if (checkBuiltinVectorMathArgTypes(*this, 2, Args))
    return std::nullopt;
```

https://github.com/llvm/llvm-project/pull/155620