[clang] [AArch64][SME] Warn when using a streaming builtin from a non-streaming function (PR #75487)

[Sander de Smalen via cfe-commits]

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@@ -1702,6 +1705,62 @@ 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();
+  });
+
+  StringRef ExtensionKind;
+  switch (Kind) {
+  case ACLEKind::SME:
+    ExtensionKind = "SME";
+    break;
+  case ACLEKind::SVE:
+    ExtensionKind = "SVE";
+    break;
+  }
+
+  OS << "#ifdef GET_" << ExtensionKind << "_STREAMING_ATTRS\n";
+
+  // Ensure these are only emitted once.
+  std::set<std::string> Emitted;
+  llvm::StringMap<std::set<std::string>> StreamingMap;
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sdesmalen-arm wrote:

If you're using a `std::set` here, there is no need for sorting the Defs and also no need for `std::set<..> Emitted`

https://github.com/llvm/llvm-project/pull/75487