https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82240
David Binderman <dcb314 at hotmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hjl at gcc dot gnu.org --- Comment #8 from David Binderman <dcb314 at hotmail dot com> --- I think hjl in revision 145624 back in 2009 either wrote (or maybe imported from Intel) the code you mentioned in atom.md. Maybe casting the net wider might help.