[mlir] Use std::underlying_type_t (NFC)

diff --git a/mlir/tools/mlir-tblgen/EnumsGen.cpp b/mlir/tools/mlir-tblgen/EnumsGen.cpp
index 0a697b0..60dde06 100644 (file)
--- a/mlir/tools/mlir-tblgen/EnumsGen.cpp
+++ b/mlir/tools/mlir-tblgen/EnumsGen.cpp
@@ -71,7 +71,7 @@ static void emitDenseMapInfo(StringRef enumName, std::string underlyingType,
       std::string(formatv("{0}::{1}", cppNamespace, enumName));
   if (underlyingType.empty())
     underlyingType =
-        std::string(formatv("std::underlying_type<{0}>::type", qualName));
+        std::string(formatv("std::underlying_type_t<{0}>", qualName));
 
   const char *const mapInfo = R"(
 namespace llvm {