diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp
index 1d935b20739..375307b973a 100644
--- a/lib/CodeGen/LiveVariables.cpp
+++ b/lib/CodeGen/LiveVariables.cpp
@@ -483,21 +483,6 @@ void LiveVariables::UpdatePhysRegDefs(MachineInstr *MI,
   }
 }
 
-namespace {
-  struct RegSorter {
-    const TargetRegisterInfo *TRI;
-
-    RegSorter(const TargetRegisterInfo *tri) : TRI(tri) { }
-    bool operator()(unsigned A, unsigned B) {
-      if (TRI->isSubRegister(A, B))
-        return true;
-      else if (TRI->isSubRegister(B, A))
-        return false;
-      return A < B;
-    }
-  };
-}
-
 bool LiveVariables::runOnMachineFunction(MachineFunction &mf) {
   MF = &mf;
   MRI = &mf.getRegInfo();
diff --git a/lib/CodeGen/LowerSubregs.cpp b/lib/CodeGen/LowerSubregs.cpp
index a1f1a078d61..ad1c537c191 100644
--- a/lib/CodeGen/LowerSubregs.cpp
+++ b/lib/CodeGen/LowerSubregs.cpp
@@ -58,9 +58,6 @@ namespace {
 
     void TransferDeadFlag(MachineInstr *MI, unsigned DstReg,
                           const TargetRegisterInfo *TRI);
-    void TransferKillFlag(MachineInstr *MI, unsigned SrcReg,
-                          const TargetRegisterInfo *TRI,
-                          bool AddIfNotFound = false);
     void TransferImplicitDefs(MachineInstr *MI);
   };
 
@@ -87,23 +84,6 @@ LowerSubregsInstructionPass::TransferDeadFlag(MachineInstr *MI,
   }
 }
 
-/// TransferKillFlag - MI is a pseudo-instruction with SrcReg killed,
-/// and the lowered replacement instructions immediately precede it.
-/// Mark the replacement instructions with the kill flag.
-void
-LowerSubregsInstructionPass::TransferKillFlag(MachineInstr *MI,
-                                              unsigned SrcReg,
-                                              const TargetRegisterInfo *TRI,
-                                              bool AddIfNotFound) {
-  for (MachineBasicBlock::iterator MII =
-        prior(MachineBasicBlock::iterator(MI)); ; --MII) {
-    if (MII->addRegisterKilled(SrcReg, TRI, AddIfNotFound))
-      break;
-    assert(MII != MI->getParent()->begin() &&
-           "copyPhysReg output doesn't reference source register!");
-  }
-}
-
 /// TransferImplicitDefs - MI is a pseudo-instruction, and the lowered
 /// replacement instructions immediately precede it.  Copy any implicit-def
 /// operands from MI to the replacement instruction.