1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/unittests/Analysis/ScalarEvolutionTest.cpp b/llvm/unittests/Analysis/ScalarEvolutionTest.cpp
index c6821fa..8756e2c 100644
--- a/llvm/unittests/Analysis/ScalarEvolutionTest.cpp
+++ b/llvm/unittests/Analysis/ScalarEvolutionTest.cpp
@@ -1148,7 +1148,7 @@ TEST_F(ScalarEvolutionsTest, SCEVComputeConstantDifference) {
     auto *ScevXB = SE.getSCEV(getInstructionByName(F, "xb")); // {%pp,+,1}
     auto *ScevIVNext = SE.getSCEV(getInstructionByName(F, "iv.next")); // {1,+,1}
 
-    auto diff = [&SE](const SCEV *LHS, const SCEV *RHS) -> Optional<int> {
+    auto diff = [&SE](const SCEV *LHS, const SCEV *RHS) -> std::optional<int> {
       auto ConstantDiffOrNone = computeConstantDifference(SE, LHS, RHS);
       if (!ConstantDiffOrNone)
         return std::nullopt;