diff --git a/llvm/lib/CodeGen/StackSlotColoring.cpp b/llvm/lib/CodeGen/StackSlotColoring.cpp
index 9fdc8a338b52a5..9bc28bb680157d 100644
--- a/llvm/lib/CodeGen/StackSlotColoring.cpp
+++ b/llvm/lib/CodeGen/StackSlotColoring.cpp
@@ -149,6 +149,7 @@ namespace {
       AU.addRequired<SlotIndexes>();
       AU.addPreserved<SlotIndexes>();
       AU.addRequired<LiveStacks>();
+      AU.addPreserved<LiveStacks>();
       AU.addRequired<MachineBlockFrequencyInfo>();
       AU.addPreserved<MachineBlockFrequencyInfo>();
       AU.addPreservedID(MachineDominatorsID);
@@ -534,6 +535,12 @@ bool StackSlotColoring::runOnMachineFunction(MachineFunction &MF) {
   InitializeSlots();
   Changed = ColorSlots(MF);
 
+  // Clear LiveStack analysis as it has been changed in ways that it requires
+  // efforts to rectify  which is equivalent to do it all over again. Also,
+  // this current results would not be used later, so better to clear it &
+  // preserve analysis.
+  LS->releaseMemory();
+
   for (int &Next : NextColors)
     Next = -1;