diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h
index 2bcd1c72ce9..1c2baef8bce 100644
--- a/include/llvm/CodeGen/MachineRegisterInfo.h
+++ b/include/llvm/CodeGen/MachineRegisterInfo.h
@@ -185,7 +185,12 @@ public:
 
   /// hasOneUse - Return true if there is exactly one instruction using the
   /// specified register.
-  bool hasOneUse(unsigned RegNo) const;
+  bool hasOneUse(unsigned RegNo) const {
+    use_iterator UI = use_begin(RegNo);
+    if (UI == use_end())
+      return false;
+    return ++UI == use_end();
+  }
 
   /// use_nodbg_iterator/use_nodbg_begin/use_nodbg_end - Walk all uses of the
   /// specified register, skipping those marked as Debug.
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp
index 82e123528ac..3a4eb8c967d 100644
--- a/lib/CodeGen/MachineRegisterInfo.cpp
+++ b/lib/CodeGen/MachineRegisterInfo.cpp
@@ -178,13 +178,6 @@ MachineInstr *MachineRegisterInfo::getUniqueVRegDef(unsigned Reg) const {
   return &*I;
 }
 
-bool MachineRegisterInfo::hasOneUse(unsigned RegNo) const {
-  use_iterator UI = use_begin(RegNo);
-  if (UI == use_end())
-    return false;
-  return ++UI == use_end();
-}
-
 bool MachineRegisterInfo::hasOneNonDBGUse(unsigned RegNo) const {
   use_nodbg_iterator UI = use_nodbg_begin(RegNo);
   if (UI == use_nodbg_end())