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>"))]
