Comment 9 for bug 736661

It's caused or triggered by r154736:

Author: hubicka
Date: Sun Nov 29 10:32:08 2009
New Revision: 154736

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=154736
Log:

 * cgraph.c (same_body_alias_1): Break out of
 (same_body_alias): ... here; remove comdat check; it is handled
 in cp already.
 (cgraph_add_thunk): New.
 (dump_cgraph_node): Dump aliases and thunks.
 * cgraph.h (cgraph_thunk_info): New structure.
 (struct cgraph_node): Add thunk info.
 (cgraph_add_thunk): New.
        ...

One strange thing about that commit is that it added calls to record_loop_exits in ira.c, but the ChangeLog entry doesn't mention ira.c, and nothing else in the commit seems related to loops or ira. A local hack that got accidentally committed?