------- Comment #3 from andi-gcc at firstfloor dot org 2008-09-01 14:20 ------- Thanks for the us^whelpful comment. If you can suggest a way to do carry preserving addition without inline assembler that would be fine, otherwise not.
-Os seems to do something that improves it at least (and that is new in 4.4, 4.3 didn't do that) I suppose -O2 does something more that makes it then worse again. I merely filled it because I thought it would be interesting to fix that something to not pessimize code. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37312
