diff --git a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
--- a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
@@ -151,11 +151,11 @@
   return str;
 }
 
-// Escape a string using LLVM/MLIR encoding. E.g. foo"bar -> foo\22bar.
+// Escape a string using C++ encoding. E.g. foo"bar -> foo\x22bar.
 static std::string escapeString(StringRef value) {
   std::string ret;
   llvm::raw_string_ostream os(ret);
-  llvm::printEscapedString(value, os);
+  os.write_escaped(value);
   return os.str();
 }