Index: mlir/test/mlir-tblgen/enums-gen-empty.td
===================================================================
--- /dev/null
+++ mlir/test/mlir-tblgen/enums-gen-empty.td
@@ -0,0 +1,2 @@
+// RUN: mlir-tblgen -gen-enum-decls -I %S/../../include %s
+// RUN: mlir-tblgen -gen-enum-defs -I %S/../../include %s
Index: mlir/tools/mlir-tblgen/EnumsGen.cpp
===================================================================
--- mlir/tools/mlir-tblgen/EnumsGen.cpp
+++ mlir/tools/mlir-tblgen/EnumsGen.cpp
@@ -536,7 +536,7 @@
 static bool emitEnumDecls(const RecordKeeper &recordKeeper, raw_ostream &os) {
   llvm::emitSourceFileHeader("Enum Utility Declarations", os);
 
-  auto defs = recordKeeper.getAllDerivedDefinitions("EnumAttrInfo");
+  auto defs = recordKeeper.getAllDerivedDefinitionsIfDefined("EnumAttrInfo");
   for (const auto *def : defs)
     emitEnumDecl(*def, os);
 
@@ -574,7 +574,7 @@
 static bool emitEnumDefs(const RecordKeeper &recordKeeper, raw_ostream &os) {
   llvm::emitSourceFileHeader("Enum Utility Definitions", os);
 
-  auto defs = recordKeeper.getAllDerivedDefinitions("EnumAttrInfo");
+  auto defs = recordKeeper.getAllDerivedDefinitionsIfDefined("EnumAttrInfo");
   for (const auto *def : defs)
     emitEnumDef(*def, os);