[clang] [Clang][AArch64] Warn when calling streaming/non-streaming about vect… (PR #79842)

[Sander de Smalen via cfe-commits]

================
@@ -7513,6 +7516,30 @@ void Sema::checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto,
       }
     }
 
+    auto *CallerFD = dyn_cast<FunctionDecl>(CurContext);
+    bool IsCalleeStreaming =
+        (ExtInfo.AArch64SMEAttributes & FunctionType::SME_PStateSMEnabledMask);
----------------
sdesmalen-arm wrote:

nit: parentheses are unnecessary.
```suggestion
        ExtInfo.AArch64SMEAttributes & FunctionType::SME_PStateSMEnabledMask;
```

Also, please move these closer to their use (inside the if blocks)

https://github.com/llvm/llvm-project/pull/79842