http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49721
--- Comment #18 from Uros Bizjak <ubizjak at gmail dot com> 2011-08-03 06:40:45 UTC --- (In reply to comment #17) > H.J., I agree with what you write in comment 16. But unless we are sure that > the problematic composition will never be generated (e.g. by ivopts), we > cannot > afford that. > > The patch in comment 7 may have some snafu, but overall it looks very sane. > It's just that a const is not being stripped. Can it be applied on top of the > x32 branch? Or do I first have to revert some earlier revision? The patch can be applied to current trunk as-is and all the problems discussed here will be shown by simply compiling with -mx32.