diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index 67fb8b4f8e5dcb..6646380ba2119a 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -858,7 +858,7 @@ MCRegister RAGreedy::tryAssign(LiveInterval &VirtReg,
     return PhysReg;
 
   LLVM_DEBUG(dbgs() << printReg(PhysReg, TRI) << " is available at cost "
-                    << Cost << '\n');
+                    << (unsigned)Cost << '\n');
   MCRegister CheapReg = tryEvict(VirtReg, Order, NewVRegs, Cost, FixedRegisters);
   return CheapReg ? CheapReg : PhysReg;
 }