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-rw-r--r--llvm/lib/Support/TimeProfiler.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Support/TimeProfiler.cpp b/llvm/lib/Support/TimeProfiler.cpp
index f2ede75ccf9..47091221a78 100644
--- a/llvm/lib/Support/TimeProfiler.cpp
+++ b/llvm/lib/Support/TimeProfiler.cpp
@@ -19,6 +19,7 @@
#include <algorithm>
#include <cassert>
#include <chrono>
+#include <mutex>
#include <string>
#include <vector>
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