https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82089
--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #0)
> Say that in bfin.md, we redefine cstoresi4 in the following way:
> ...
> (define_expand "cstoresi4"
> [(set (match_operand:BI 0 "")
> (match_operator:BI 1 "ordered_comparison_operator"
> [(match_operand:SI 2 "register_operand" "")
> (match_operand:SI 3 "reg_or_const_int_operand" "")]))]
> "" {})
> ...
>
Written to make it easy to reproduce this wrong-code bug encountered for target
gcn on branch gcn for this insn from gcn.md:
...
(define_insn "cstoresi4"
[(set (match_operand:BI 0 "gcn_conditional_register_operand" "=cs,cs,cs,cs")
(match_operator:BI 1 "gcn_compare_operator"
[(match_operand:SI 2 "gcn_alu_operand" "SSA,SSA,SSB,SS")
(match_operand:SI 3 "gcn_alu_operand" "SSA,SSK,SS ,SSB")]))]
""
"@
s_cmp%D1\t%2, %3
s_cmpk%D1\t%2, %3
s_cmp%D1\t%2, %3
s_cmp%D1\t%2, %3"
[(set_attr "type" "sopc,sopk,sopk,sopk")
(set_attr "mode" "SI")])
...
