[clang] [AArch64][SME] Warn when using a streaming builtin from a non-streaming function (PR #74064)

[Sam Tebbs via cfe-commits]

================
@@ -3168,11 +3168,70 @@ static void checkArmStreamingBuiltin(Sema &S, CallExpr 
*TheCall,
         << TheCall->getSourceRange() << "streaming compatible";
     return;
   }
+
+  if (FnType == ArmNonStreaming && BuiltinType == ArmStreaming) {
+    S.Diag(TheCall->getBeginLoc(), 
diag::warn_attribute_arm_sm_incompat_builtin)
+        << TheCall->getSourceRange() << "non-streaming";
+  }
+}
----------------
SamTebbs33 wrote:

I've removed the ZA state changes and added the SVE changes. Let me know what 
you think.

https://github.com/llvm/llvm-project/pull/74064
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