http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49413
--- Comment #9 from Matt Gattis <gattis at gmail dot com> 2011-08-04 04:21:20 UTC --- > However, on most archs I'm pretty sure the optimizer already checks alignment > in order to do things like SIMD instructions. So this is probably a valid > FEATURE REQUEST... that the optimizer supports (but not necc. optimize) > pointers with arbitrary alignment. The thing is, it works on every previous version of gcc I've tried, even with -ftree-vectorize on, and works with 4.6 with every optimization except -ftree-vectorize. I'm sure it breaks a lot of stable code. I was going to just fix it myself and submit a patch, but the fact that it's even a question whether or not this is a bug discourages me from spending time on it because I know it'll just end up lost in some flame war. I've jumped off this sinking ship anyway... code works fine on llvm/clang.
