http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50829
--- Comment #13 from Marc Glisse <glisse at gcc dot gnu.org> 2013-03-30 10:13:46 UTC --- (In reply to comment #10) > Created attachment 28846 [details] > Use subreg The patch was submitted at http://gcc.gnu.org/ml/gcc-patches/2013-03/msg00683.html and rejected, see the discussion in that thread. We need a way to completely remove the pattern.