[clang] [clang][SME] Rework streaming mode always_inline errors/warnings (PR #174608)

[Benjamin Maxwell via cfe-commits]

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@@ -623,9 +623,13 @@ static bool checkArmStreamingBuiltin(Sema &S, CallExpr *TheCall,
            BuiltinType == SemaARM::ArmStreaming)
     S.Diag(TheCall->getBeginLoc(), diag::err_attribute_arm_sm_incompat_builtin)
         << TheCall->getSourceRange() << "streaming";
-  else
+  else {
+    if (BuiltinType == SemaARM::ArmNonStreaming) {
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MacDue wrote:

I guess there's also an issue for `ArmStreaming` builtins (though that would need en extra bit to track).

https://github.com/llvm/llvm-project/pull/174608