diff --git a/lib/CodeGen/CodeGen.cpp b/lib/CodeGen/CodeGen.cpp
index 48b71d9..de716e0 100644
--- a/lib/CodeGen/CodeGen.cpp
+++ b/lib/CodeGen/CodeGen.cpp
@@ -43,6 +43,7 @@
   initializeProcessImplicitDefsPass(Registry);
   initializePEIPass(Registry);
   initializeRegisterCoalescerPass(Registry);
+  initializeMachineSchedulerPassPass(Registry);
   initializeRenderMachineFunctionPass(Registry);
   initializeSlotIndexesPass(Registry);
   initializeStackProtectorPass(Registry);