diff --git a/src/llvm-project/llvm/lib/Analysis/BlockFrequencyInfo.cpp b/src/llvm-project/llvm/lib/Analysis/BlockFrequencyInfo.cpp
index b9b1fde..b464071 100644
--- a/src/llvm-project/llvm/lib/Analysis/BlockFrequencyInfo.cpp
+++ b/src/llvm-project/llvm/lib/Analysis/BlockFrequencyInfo.cpp
@@ -47,6 +47,7 @@
                clEnumValN(GVDT_Count, "count", "display a graph using the real "
                                                "profile count if available.")));
 
+namespace llvm {
 cl::opt<std::string>
     ViewBlockFreqFuncName("view-bfi-func-name", cl::Hidden,
                           cl::desc("The option to specify "
@@ -86,6 +87,7 @@
     "print-bfi-func-name", cl::Hidden,
     cl::desc("The option to specify the name of the function "
              "whose block frequency info is printed."));
+} // namespace llvm
 
 namespace llvm {