diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
index 7a6e754..eaba9a5 100644
--- a/llvm/lib/CodeGen/MachineScheduler.cpp
+++ b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -542,7 +542,7 @@
 }
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
-LLVM_DUMP_METHOD void ReadyQueue::dump() {
+LLVM_DUMP_METHOD void ReadyQueue::dump() const {
   dbgs() << "Queue " << Name << ": ";
   for (const SUnit *SU : Queue)
     dbgs() << SU->NodeNum << " ";
@@ -2309,7 +2309,7 @@
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 // This is useful information to dump after bumpNode.
 // Note that the Queue contents are more useful before pickNodeFromQueue.
-LLVM_DUMP_METHOD void SchedBoundary::dumpScheduledState() {
+LLVM_DUMP_METHOD void SchedBoundary::dumpScheduledState() const {
   unsigned ResFactor;
   unsigned ResCount;
   if (ZoneCritResIdx) {
@@ -2648,7 +2648,7 @@
   }
 }
 
-void GenericScheduler::dumpPolicy() {
+void GenericScheduler::dumpPolicy() const {
   // Cannot completely remove virtual function even in release mode.
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
   dbgs() << "GenericScheduler RegionPolicy: "