[Transforms] Use std::optional in AsyncToAsyncRuntime.cpp (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

1 files changed, 2 insertions, 1 deletions

diff --git a/mlir/lib/Dialect/Async/Transforms/AsyncToAsyncRuntime.cpp b/mlir/lib/Dialect/Async/Transforms/AsyncToAsyncRuntime.cpp
index 3701a8b..49fe5b5 100644
--- a/mlir/lib/Dialect/Async/Transforms/AsyncToAsyncRuntime.cpp
+++ b/mlir/lib/Dialect/Async/Transforms/AsyncToAsyncRuntime.cpp
@@ -27,6 +27,7 @@
 #include "mlir/Transforms/RegionUtils.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/Support/Debug.h"
+#include <optional>
 
 namespace mlir {
 #define GEN_PASS_DEF_ASYNCTOASYNCRUNTIME
@@ -90,7 +91,7 @@ struct CoroMachinery {
 
   Value coroHandle; // coroutine handle (!async.coro.getHandle value)
   Block *entry;     // coroutine entry block
-  Optional<Block *> setError; // set returned values to error state
+  std::optional<Block *> setError; // set returned values to error state
   Block *cleanup;   // coroutine cleanup block
   Block *suspend;   // coroutine suspension block
 };