Index: include/llvm/CodeGen/MachineScheduler.h
===================================================================
--- include/llvm/CodeGen/MachineScheduler.h
+++ include/llvm/CodeGen/MachineScheduler.h
@@ -997,6 +997,22 @@
   void pickNodeFromQueue(SchedCandidate &Cand);
 };
 
+std::unique_ptr<ScheduleDAGMutation>
+createLoadClusterDAGMutation(const TargetInstrInfo *TII,
+                             const TargetRegisterInfo *TRI);
+
+std::unique_ptr<ScheduleDAGMutation>
+createStoreClusterDAGMutation(const TargetInstrInfo *TII,
+                              const TargetRegisterInfo *TRI);
+
+std::unique_ptr<ScheduleDAGMutation>
+createMacroFusionDAGMutation(const TargetInstrInfo &TII,
+                             const TargetRegisterInfo &TRI);
+
+std::unique_ptr<ScheduleDAGMutation>
+createCopyConstrainDAGMutation(const TargetInstrInfo *TII,
+                               const TargetRegisterInfo *TRI);
+
 } // namespace llvm
 
 #endif
Index: lib/CodeGen/MachineScheduler.cpp
===================================================================
--- lib/CodeGen/MachineScheduler.cpp
+++ lib/CodeGen/MachineScheduler.cpp
@@ -1396,6 +1396,22 @@
 };
 } // anonymous
 
+namespace llvm {
+
+std::unique_ptr<ScheduleDAGMutation>
+createLoadClusterDAGMutation(const TargetInstrInfo *TII,
+                             const TargetRegisterInfo *TRI) {
+  return make_unique<LoadClusterMutation>(TII, TRI);
+}
+
+std::unique_ptr<ScheduleDAGMutation>
+createStoreClusterDAGMutation(const TargetInstrInfo *TII,
+                              const TargetRegisterInfo *TRI) {
+  return make_unique<StoreClusterMutation>(TII, TRI);
+}
+
+} // namespace llvm
+
 void BaseMemOpClusterMutation::clusterNeighboringMemOps(
     ArrayRef<SUnit *> MemOps, ScheduleDAGMI *DAG) {
   SmallVector<MemOpInfo, 32> MemOpRecords;
@@ -1497,6 +1513,16 @@
 };
 } // anonymous
 
+namespace llvm {
+
+std::unique_ptr<ScheduleDAGMutation>
+createMacroFusionDAGMutation(const TargetInstrInfo &TII,
+                             const TargetRegisterInfo &TRI) {
+  return make_unique<MacroFusion>(TII, TRI);
+}
+
+} // namespace llvm
+
 /// Returns true if \p MI reads a register written by \p Other.
 static bool HasDataDep(const TargetRegisterInfo &TRI, const MachineInstr &MI,
                        const MachineInstr &Other) {
@@ -1573,6 +1599,16 @@
 };
 } // anonymous
 
+namespace llvm {
+
+std::unique_ptr<ScheduleDAGMutation>
+createCopyConstrainDAGMutation(const TargetInstrInfo *TII,
+                             const TargetRegisterInfo *TRI) {
+  return make_unique<CopyConstrain>(TII, TRI);
+}
+
+} // namespace llvm
+
 /// constrainLocalCopy handles two possibilities:
 /// 1) Local src:
 /// I0:     = dst