From dd436d3cff53db0c64cc4ef5a671b7985917130e Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu@google.com>
Date: Sun, 27 Nov 2022 11:48:55 -0800
Subject: [PATCH] [ADT] Use std::optional in StringSwitch.h (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
---
 llvm/include/llvm/ADT/StringSwitch.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/include/llvm/ADT/StringSwitch.h b/llvm/include/llvm/ADT/StringSwitch.h
index 6ba75eb..199b155 100644
--- a/llvm/include/llvm/ADT/StringSwitch.h
+++ b/llvm/include/llvm/ADT/StringSwitch.h
@@ -18,6 +18,7 @@
 #include "llvm/Support/Compiler.h"
 #include <cassert>
 #include <cstring>
+#include <optional>
 
 namespace llvm {
 
@@ -47,7 +48,7 @@ class StringSwitch {
 
   /// The pointer to the result of this switch statement, once known,
   /// null before that.
-  Optional<T> Result;
+  std::optional<T> Result;
 
 public:
   explicit StringSwitch(StringRef S)
-- 
2.7.4