------- Comment #5 from bernds_cb1 at t-online dot de 2009-12-01 15:26 ------- Code generation changes are expected for two reasons - the code became less conservative when determining conflicts with other registers, so we can usually rename in more cases. There are also a few cases where we have to give up on renaming due to multiword hard register overlaps we can't track.
Unfortunately I don't have access to spec; I'll have to think about how to track this down. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42216
