http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50480
--- Comment #4 from Yukhin Kirill <kirill.yukhin at intel dot com> 2011-09-27 08:31:35 UTC --- (In reply to comment #3) > For 32bit only it seems. Supposedly a cost model issue, the register pressure > will be higher and we have only half the number of SSE regs. Richard, what's wrong maybe with cost model? If you're increasing liverange and you have not as much registers (32-bit case), obviously register pressure will increase and degrade performance. But again, how it is connected with cost model?
