[clang] [HLSL] Update Sema Checking Diagnostics for builtins (PR #138429)

[Farzon Lotfi via cfe-commits]

================
@@ -2164,30 +2083,48 @@ static bool CheckModifiableLValue(Sema *S, CallExpr *TheCall,
   return true;
 }
 
-static bool CheckNoDoubleVectors(Sema *S, CallExpr *TheCall) {
-  auto checkDoubleVector = [](clang::QualType PassedType) -> bool {
-    if (const auto *VecTy = PassedType->getAs<VectorType>())
-      return VecTy->getElementType()->isDoubleType();
-    return false;
-  };
-  return CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
-                                    checkDoubleVector);
+static bool CheckNoDoubleVectors(Sema *S, SourceLocation Loc, int ArgOrdinal,
+                                 clang::QualType PassedType) {
+  if (const auto *VecTy = PassedType->getAs<VectorType>())
+    if (VecTy->getElementType()->isDoubleType())
+      return S->Diag(Loc, diag::err_builtin_invalid_arg_type)
+             << ArgOrdinal << /* scalar */ 1 << /* no int */ 0 << /* fp */ 1
+             << PassedType;
+  return false;
 }
----------------
farzonl wrote:

Small Nit: I really like to try to avoid nesting if possible. seems like we might be able to if we do the negation checks first. 

```suggestion
static bool CheckNoDoubleVectors(Sema *S, SourceLocation Loc, int ArgOrdinal,
                                 clang::QualType PassedType) {
  const auto *VecTy = PassedType->getAs<VectorType>();
  if (!VecTy)
    return false;

  if (!VecTy->getElementType()->isDoubleType())
    return false;

  return S->Diag(Loc, diag::err_builtin_invalid_arg_type)
         << ArgOrdinal << /* scalar */ 1 << /* no int */ 0 << /* fp */ 1
         << PassedType;
}
```

https://github.com/llvm/llvm-project/pull/138429