http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49257
--- Comment #3 from Uros Bizjak <ubizjak at gmail dot com> 2011-06-01 18:27:49 UTC --- Actually, there is no DImode SSE conversion instruction for 32bit targets, so implicit conversion generates fildq insn that uses x87 registers even with unsigned DImode operands.
