diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -46,6 +46,9 @@
 #include "llvm/Transforms/Scalar/LoopPassManager.h"
 #include "llvm/Transforms/Utils/FunctionImportUtils.h"
 #include "llvm/Transforms/Utils/SplitModule.h"
+#ifdef __FACEBOOK__
+#include "pika/CodeGen/MIRProfileSummary.h"
+#endif // __FACEBOOK__
 
 using namespace llvm;
 using namespace lto;
@@ -528,6 +531,9 @@
 
   std::unique_ptr<TargetMachine> TM = createTargetMachine(C, *TOrErr, *Mod);
 
+#ifdef __FACEBOOK__
+  MIRProfileSummary::parseProfile();
+#endif
   if (!C.CodeGenOnly) {
     if (!opt(C, TM.get(), 0, *Mod, /*IsThinLTO=*/false,
              /*ExportSummary=*/&CombinedIndex, /*ImportSummary=*/nullptr,
@@ -541,6 +547,10 @@
     splitCodeGen(C, TM.get(), AddStream, ParallelCodeGenParallelismLevel,
                  std::move(Mod), CombinedIndex);
   }
+#ifdef __FACEBOOK__
+  std::vector<std::string> temp;
+  MIRProfileSummary::publishFinalOrderedSymbols(temp);
+#endif
   return Error::success();
 }