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Move immediate to register for int literal.

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Simon Forman 2020-01-28 10:46:38 -08:00
parent 6888c71b69
commit bc7b471daf
1 changed files with 26 additions and 19 deletions
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45
thun/thun.pl
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@ -642,54 +642,61 @@ the Joy stack?
*/
get_reg(_, _).
assoc_reg(_, _, _).
get_reg(_, _) --> [].
assoc_reg(_, _, _) --> [].
thun_compile([], S, S).
thun_compile([Term|Rest], Si, So) :- thun_compile(Term, Rest, Si, So).
thun_compile([], S, S) --> [].
thun_compile([Term|Rest], Si, So) --> thun_compile(Term, Rest, Si, So).
thun_compile(int(I), E, Si, So) :-
thun_compile(int(I), E, Si, So) -->
[mov_imm(R, int(I))],
get_reg(R, _), assoc_reg(R, int(I), _),
thun_compile(E, [R|Si], So).
thun_compile(bool(B), E, Si, So) :-
thun_compile(bool(B), E, Si, So) -->
get_reg(R, _), assoc_reg(R, bool(B), _),
thun_compile(E, [R|Si], So).
thun_compile(list(L), E, Si, So) :-
thun_compile(list(L), E, Si, So) -->
% encode_list(_), ???
get_reg(R, _), assoc_reg(R, list(L), _),
thun_compile(E, [R|Si], So).
thun_compile(symbol(Name), E, Si, So) :- def(Name, _), !, def_compile(Name, E, Si, So).
thun_compile(symbol(Name), E, Si, So) :- func(Name, _, _), !, func_compile(Name, E, Si, So).
thun_compile(symbol(Name), E, Si, So) :- combo(Name, _, _, _, _), combo_compile(Name, E, Si, So).
thun_compile(symbol(Name), E, Si, So) --> {def(Name, _)}, !, def_compile(Name, E, Si, So).
thun_compile(symbol(Name), E, Si, So) --> {func(Name, _, _)}, !, func_compile(Name, E, Si, So).
thun_compile(symbol(Name), E, Si, So) --> {combo(Name, _, _, _, _)}, combo_compile(Name, E, Si, So).
% I'm going to assume that any defs that can be compiled to funcs already
% have been. Defs that can't be pre-compiled shove their body expression
% onto the pending expression (continuation) to be compiled "inline".
def_compile(Def, E, Si, So) :-
def(Def, Body),
append(Body, E, Eo),
def_compile(Def, E, Si, So) -->
{def(Def, Body),
append(Body, E, Eo)},
thun_compile(Eo, Si, So).
% Functions delegate to a per-function compilation relation.
func_compile(Func, E, Si, So) :-
func_compile(Func, E, Si, So) -->
% look up function, compile it...
Si = S,
{Si = S},
thun_compile(E, S, So).
combo_compile(Combo, E, Si, So) :-
combo_compile(Combo, E, Si, So) -->
% look up combinator, compile it...
Si = S, E = Eo,
{Si = S, E = Eo},
thun_compile(Eo, S, So).
compiler(InputString, MachineCode, StackIn, StackOut) :-
phrase(joy_parse(Expression), InputString), !,
phrase(thun_compile(Expression, StackIn, StackOut), MachineCode, []).
/*
phrase(joy_parse(Expression), InputString), !, thun_compile(Expression, StackIn, StackOut).
?- compiler(`1 2 +`, MachineCode, StackIn, StackOut).
MachineCode = [mov_imm(_18272, int(1)), mov_imm(_18298, int(2))],
StackOut = [_18298, _18272|StackIn].