http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50107
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-17 18:43:41 UTC --- (In reply to comment #2) > I guess something wrong with hard register preferencing for multi-register > pseudos in ira-color.c::ira_assign. I believe it works fine for one-register > pseudos. I'll look at this. Thanks for reporting. One problem is IRA ues RCX/RBX pair, instead of R8/R9, for TImode. Since RBX is callee-saved, we have to save and restore it. > By the way, your patch is wrong. There should be TARGET_64BIT in define_split > instead of !TARGET_64BIT. It has been fixed. Thanks.
