Print proper message saying variadic ops are not supported in RewriterGen

Support for ops with variadic operands/results will come later; but right now
a proper message helps to avoid deciphering confusing error messages later in
the compilation stage.

PiperOrigin-RevId: 254071820

1 files changed, 4 insertions, 0 deletions

diff --git a/mlir/lib/TableGen/Operator.cpp b/mlir/lib/TableGen/Operator.cpp
index a5dd9c25027..7f9ebdc5191 100644
--- a/mlir/lib/TableGen/Operator.cpp
+++ b/mlir/lib/TableGen/Operator.cpp
@@ -89,6 +89,10 @@ StringRef tblgen::Operator::getExtraClassDeclaration() const {
 
 const llvm::Record &tblgen::Operator::getDef() const { return def; }
 
+bool tblgen::Operator::isVariadic() const {
+  return getNumVariadicOperands() != 0 || getNumVariadicResults() != 0;
+}
+
 auto tblgen::Operator::result_begin() -> value_iterator {
   return results.begin();
 }