1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/MachineTraceMetrics.cpp b/llvm/lib/CodeGen/MachineTraceMetrics.cpp
index dc6746e..f5311a0 100644
--- a/llvm/lib/CodeGen/MachineTraceMetrics.cpp
+++ b/llvm/lib/CodeGen/MachineTraceMetrics.cpp
@@ -9,7 +9,6 @@
 #include "llvm/CodeGen/MachineTraceMetrics.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
@@ -449,7 +448,7 @@ public:
 
   void finishPostorder(const MachineBasicBlock*) {}
 
-  bool insertEdge(Optional<const MachineBasicBlock *> From,
+  bool insertEdge(std::optional<const MachineBasicBlock *> From,
                   const MachineBasicBlock *To) {
     // Skip already visited To blocks.
     MachineTraceMetrics::TraceBlockInfo &TBI = LB.Blocks[To->getNumber()];