Merge ktlim@zizzer:/bk/newmem

into  zamp.eecs.umich.edu:/z/ktlim2/clean/tmp/head

--HG--
extra : convert_revision : a250eed999be9b8acd6f420fdfe8f1b02905beb1

src/cpu/o3/rename_impl.hh

@@ -692,7 +692,7 @@ DefaultRename<Impl>::renameInsts(unsigned tid)
             DPRINTF(Rename, "Blocking due to lack of free "
                     "physical registers to rename to.\n");
             blockThisCycle = true;
-
+            insts_to_rename.push_front(inst);
             ++renameFullRegistersEvents;
 
             break;