1 files changed, 5 insertions, 5 deletions
diff --git a/llvm/lib/Target/Hexagon/RDFLiveness.cpp b/llvm/lib/Target/Hexagon/RDFLiveness.cpp
index 7d7b89462ff9..e2c007c9d01a 100644
--- a/llvm/lib/Target/Hexagon/RDFLiveness.cpp
+++ b/llvm/lib/Target/Hexagon/RDFLiveness.cpp
@@ -620,7 +620,7 @@ void Liveness::computePhiInfo() {
     for (NodeAddr<UseNode*> UA : PUs) {
       std::map<NodeId,RegisterAggr> &PUM = PhiUp[UA.Id];
       RegisterRef UR = PRI.normalize(UA.Addr->getRegRef(DFG));
-      for (const std::pair<NodeId,RegisterAggr> &P : PUM) {
+      for (const std::pair<const NodeId, RegisterAggr> &P : PUM) {
         bool Changed = false;
         const RegisterAggr &MidDefs = P.second;
 
@@ -636,7 +636,7 @@ void Liveness::computePhiInfo() {
         //     if MidDefs does not cover (R,U)
         //       then add (R-MidDefs,U) to RealUseMap[P]
         //
-        for (const std::pair<RegisterId,NodeRefSet> &T : RUM) {
+        for (const std::pair<const RegisterId, NodeRefSet> &T : RUM) {
           RegisterRef R(T.first);
           // The current phi (PA) could be a phi for a regmask. It could
           // reach a whole variety of uses that are not related to the
@@ -768,7 +768,7 @@ void Liveness::computeLiveIns() {
         auto PrA = DFG.addr<BlockNode*>(PUA.Addr->getPredecessor());
         RefMap &LOX = PhiLOX[PrA.Addr->getCode()];
 
-        for (const std::pair<RegisterId,NodeRefSet> &RS : RUs) {
+        for (const std::pair<const RegisterId, NodeRefSet> &RS : RUs) {
           // We need to visit each individual use.
           for (std::pair<NodeId,LaneBitmask> P : RS.second) {
             // Create a register ref corresponding to the use, and find
@@ -991,7 +991,7 @@ void Liveness::traverse(MachineBasicBlock *B, RefMap &LiveIn) {
   RefMap LiveInCopy = LiveIn;
   LiveIn.clear();
 
-  for (const std::pair<RegisterId,NodeRefSet> &LE : LiveInCopy) {
+  for (const std::pair<const RegisterId, NodeRefSet> &LE : LiveInCopy) {
     RegisterRef LRef(LE.first);
     NodeRefSet &NewDefs = LiveIn[LRef.Reg]; // To be filled.
     const NodeRefSet &OldDefs = LE.second;
@@ -1105,7 +1105,7 @@ void Liveness::traverse(MachineBasicBlock *B, RefMap &LiveIn) {
 
   for (auto C : IIDF[B]) {
     RegisterAggr &LiveC = LiveMap[C];
-    for (const std::pair<RegisterId,NodeRefSet> &S : LiveIn)
+    for (const std::pair<const RegisterId, NodeRefSet> &S : LiveIn)
       for (auto R : S.second)
         if (MDT.properlyDominates(getBlockWithRef(R.first), C))
           LiveC.insert(RegisterRef(S.first, R.second));