http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53787
--- Comment #16 from Martin Jambor <jamborm at gcc dot gnu.org> 2013-01-25 18:32:39 UTC --- I do have a caller of the clone (in the WPA dump): init_.constprop.2/71 (init_.constprop.2) @0x7f10180f06f0 Type: function ... Clone of init_/41 ... Called by: driver_.constprop.1/70 (1.00 per call) Calls: memcpy/49 (1.00 per call) that is not the problem. The problem is that the pass-through jump function for npart does not have the agg_preserved flag set. Ido not yet know why that is the case, nevertheless it means the value is not propagated to init. I will have a detailed look, thanks a lot for the testcase.