diff --git a/lib/CodeGen/DeadMachineInstructionElim.cpp b/lib/CodeGen/DeadMachineInstructionElim.cpp
index 0d043f7..4832a5e 100644
--- a/lib/CodeGen/DeadMachineInstructionElim.cpp
+++ b/lib/CodeGen/DeadMachineInstructionElim.cpp
@@ -129,9 +129,9 @@
             // Check the subreg set, not the alias set, because a def
             // of a super-register may still be partially live after
             // this def.
-            for (const unsigned *AliasSet = TRI->getSubRegisters(Reg);
-                 *AliasSet; ++AliasSet)
-              LivePhysRegs.reset(*AliasSet);
+            for (const unsigned *SubRegs = TRI->getSubRegisters(Reg);
+                 *SubRegs; ++SubRegs)
+              LivePhysRegs.reset(*SubRegs);
           }
         }
       }