[clang] [AArch64] Warn when calling a NEON builtin in a streaming function (PR #73672)

[Sander de Smalen via cfe-commits]

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@@ -3136,6 +3192,31 @@ bool Sema::CheckSVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
 
 bool Sema::CheckNeonBuiltinFunctionCall(const TargetInfo &TI,
                                         unsigned BuiltinID, CallExpr *TheCall) {
+  if (const FunctionDecl *FD = getCurFunctionDecl()) {
+    std::optional<ArmStreamingType> BuiltinType;
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sdesmalen-arm wrote:

`BuiltinType` seems unused.

https://github.com/llvm/llvm-project/pull/73672