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

[Sander de Smalen via cfe-commits]

================
@@ -1694,6 +1697,61 @@ void SVEEmitter::createSMERangeChecks(raw_ostream &OS) {
   OS << "#endif\n\n";
 }
 
+void SVEEmitter::createStreamingAttrs(raw_ostream &OS, ACLEKind Kind) {
+  std::vector<Record *> RV = Records.getAllDerivedDefinitions("Inst");
+  SmallVector<std::unique_ptr<Intrinsic>, 128> Defs;
+  for (auto *R : RV)
+    createIntrinsic(R, Defs);
+
+  // The mappings must be sorted based on BuiltinID.
+  llvm::sort(Defs, [](const std::unique_ptr<Intrinsic> &A,
+                      const std::unique_ptr<Intrinsic> &B) {
+    return A->getMangledName() < B->getMangledName();
+  });
+
+  switch (Kind) {
----------------
sdesmalen-arm wrote:

nit: Rather than having two of these switch statements, you could do:

```
StringRef ExtensionKind;
switch (Kind) {
case ACLEKind::SME:
  ExtensionKind = "SME";
  break;
case ACLEKind::SVE:
  ExtensionKind = "SVE";
  break;
}

OS << "#ifdef GET_" << ExtensionKind << "_STREAMING_ATTRS\n";
...
for (...) {
  ...
  OS << "case " << ExtensionKind << "::BI_builtin_" << ExtensionKind.lower() << 
"_";
  ...
}
```

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