http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46088
--- Comment #3 from Uros Bizjak <ubizjak at gmail dot com> 2010-11-04 16:19:20 UTC --- (In reply to comment #2) > We're matching > > (define_insn "*ashl<mode>3_cconly" AFAICS, there is nothing wrong with the pattern: [(set (reg FLAGS_REG) (compare (ashift:SWI (match_operand:SWI 1 "nonimmediate_operand" "0") (match_operand:QI 2 "<shift_immediate_operand>" "<S>")) (const_int 0))) (clobber (match_scratch:SWI 0 "=<r>"))]