https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82259
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Uroš Bizjak from comment #2) > A couple of *scc_bt patterns are missing. These are similar to already > existing *jcc_bt patterns. Combine wants: > > Failed to match this instruction: > (set (reg:QI 97) > (eq:QI (zero_extract:SI (reg/v:SI 91 [ x ]) > (const_int 1 [0x1]) > (zero_extend:SI (subreg:QI (reg/v:SI 92 [ bit ]) 0))) > (const_int 0 [0]))) I have a patch which changes that as I was running into something similar a few days ago.
