%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
% This is a regression test. The compiler used to abort in this code
% when both frame optimization and value numbering were turned on but
% full jump optimization wasn't.
%
% The reason was that frameopt, in keeping the stack frame of det_insert_fcl,
% would generate the instruction sequence "livevals, assign to succip, goto",
% which violated an invariant expected by value numbering, namely that
% the livevals giving info about the variables live at a goto must
% immediately precede the goto. (Fulljump fixes the problem by eliminating
% the goto.)

:- module livevals_seq.
:- interface.

:- import_module list.
:- import_module tree234.

:- type map(K, V) == tree234(K, V).

:- pred det_insert_fcl(map(K, V), list(K), list(V), map(K, V)).
:- mode det_insert_fcl(in, in, in, out) is det.

:- implementation.
:- import_module require.

det_insert_fcl(Map0, Ks, Vs, Map) :-
    ( if Ks = [Key | Keys], Vs = [Value | Values] then
        det_insert(Map0, Key, Value, Map1),
        det_insert_fcl(Map1, Keys, Values, Map)
    else if Ks = [], Vs = [] then
        Map = Map0
    else
        error("lists do not correspond")
    ).

:- pred det_insert(map(K, V)::in, K::in, V::in, map(K, V)::out) is det.
:- pragma no_inline(det_insert/4).

det_insert(M, _, _, M).