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-rw-r--r--lib/compiler/src/v3_codegen.erl170
1 files changed, 162 insertions, 8 deletions
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index f534500671..c8735a76e8 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -210,6 +210,8 @@ need_heap_0([], H, Acc) ->
need_heap_1(#l{ke={set,_,{binary,_}},i=I}, H) ->
{need_heap_need(I, H),0};
+need_heap_1(#l{ke={set,_,{map,_,_}},i=I}, H) ->
+ {need_heap_need(I, H),0};
need_heap_1(#l{ke={set,_,Val}}, H) ->
%% Just pass through adding to needed heap.
{[],H + case Val of
@@ -453,8 +455,11 @@ basic_block([Le|Les], Acc) ->
end;
no_block -> {reverse(Acc, [Le]),Les}
end.
+
+%% sets that may garbage collect are not allowed in basic blocks.
collect_block({set,_,{binary,_}}) -> no_block;
+collect_block({set,_,{map,_,_}}) -> no_block;
collect_block({set,_,_}) -> include;
collect_block({call,{var,_}=Var,As,_Rs}) -> {block_end,As++[Var]};
collect_block({call,Func,As,_Rs}) -> {block_end,As++func_vars(Func)};
@@ -594,14 +599,13 @@ top_level_block(Keis, Bef, MaxRegs, _St) ->
%% number to the outer catch, which is wrong.
turn_yregs(0, Tp, _) -> Tp;
-turn_yregs(El, Tp, MaxY) when element(1, element(El, Tp)) =:= yy ->
- turn_yregs(El-1, setelement(El, Tp, {y,MaxY-element(2, element(El, Tp))}), MaxY);
-turn_yregs(El, Tp, MaxY) when is_list(element(El, Tp)) ->
- New = map(fun ({yy,YY}) -> {y,MaxY-YY};
- (Other) -> Other end, element(El, Tp)),
- turn_yregs(El-1, setelement(El, Tp, New), MaxY);
turn_yregs(El, Tp, MaxY) ->
- turn_yregs(El-1, Tp, MaxY).
+ turn_yregs(El-1,setelement(El,Tp,turn_yreg(element(El,Tp),MaxY)),MaxY).
+
+turn_yreg({yy,YY},MaxY) -> {y,MaxY-YY};
+turn_yreg({list,Ls},MaxY) -> {list, turn_yreg(Ls,MaxY)};
+turn_yreg(Ts,MaxY) when is_list(Ts) -> [turn_yreg(T,MaxY)||T<-Ts];
+turn_yreg(Other,_MaxY) -> Other.
%% select_cg(Sclause, V, TypeFail, ValueFail, StackReg, State) ->
%% {Is,StackReg,State}.
@@ -623,6 +627,8 @@ select_cg(#l{ke={type_clause,bin_int,S}}, {var,V}, Tf, _Vf, Bef, St) ->
select_bin_segs(S, V, Tf, Bef, St);
select_cg(#l{ke={type_clause,bin_end,[S]}}, {var,V}, Tf, _Vf, Bef, St) ->
select_bin_end(S, V, Tf, Bef, St);
+select_cg(#l{ke={type_clause,map,S}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_map(S, V, Tf, Vf, Bef, St);
select_cg(#l{ke={type_clause,Type,Scs}}, {var,V}, Tf, Vf, Bef, St0) ->
{Vis,{Aft,St1}} =
mapfoldl(fun (S, {Int,Sta}) ->
@@ -637,6 +643,10 @@ select_val_cg(tuple, R, [Arity,{f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
[{test,is_tuple,{f,Tf},[R]},{test,test_arity,{f,Vf},[R,Arity]}|Sis];
select_val_cg(tuple, R, Vls, Tf, Vf, Sis) ->
[{test,is_tuple,{f,Tf},[R]},{select_tuple_arity,R,{f,Vf},{list,Vls}}|Sis];
+select_val_cg(map, R, [_Val,{f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
+ [{test,is_map,{f,Fail},[R]}|Sis];
+select_val_cg(map, R, [_Val,{f,Lbl}|_], Tf, _Vf, [{label,Lbl}|Sis]) ->
+ [{test,is_map,{f,Tf},[R]}|Sis];
select_val_cg(Type, R, [Val, {f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
[{test,is_eq_exact,{f,Fail},[R,{Type,Val}]}|Sis];
select_val_cg(Type, R, [Val, {f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
@@ -915,6 +925,36 @@ select_extract_tuple(Src, Vs, I, Vdb, Bef, St) ->
{Es,{Aft,_}} = flatmapfoldl(F, {Bef,0}, Vs),
{Es,Aft,St}.
+select_map(Scs, V, Tf, Vf, Bef, St0) ->
+ Reg = fetch_var(V, Bef),
+ {Is,Aft,St1} =
+ match_fmf(fun(#l{ke={val_clause,{map,Es},B},i=I,vdb=Vdb}, Fail, St1) ->
+ select_map_val(V, Es, B, Fail, I, Vdb, Bef, St1)
+ end, Vf, St0, Scs),
+ {[{test,is_map,{f,Tf},[Reg]}|Is],Aft,St1}.
+
+select_map_val(V, Es, B, Fail, I, Vdb, Bef, St0) ->
+ {Eis,Int,St1} = select_extract_map(V, Es, Fail, I, Vdb, Bef, St0),
+ {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
+ {Eis++Bis,Aft,St2}.
+
+select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
+ F = fun ({map_pair,Key,{var,V}}, Int0) ->
+ Rsrc = fetch_var(Src, Int0),
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L =< I ->
+ {[{test,has_map_field,{f,Fail},[Rsrc,Key]}],Int0};
+ _Other ->
+ Reg1 = put_reg(V, Int0#sr.reg),
+ Int1 = Int0#sr{reg=Reg1},
+ {[{get_map_element,{f,Fail},
+ Rsrc,Key,fetch_reg(V, Reg1)}],
+ Int1}
+ end
+ end,
+ {Es,Aft} = flatmapfoldl(F, Bef, Vs),
+ {Es,Aft,St}.
+
select_extract_cons(Src, [{var,Hd}, {var,Tl}], I, Vdb, Bef, St) ->
{Es,Aft} = case {vdb_find(Hd, Vdb), vdb_find(Tl, Vdb)} of
{{_,_,Lhd}, {_,_,Ltl}} when Lhd =< I, Ltl =< I ->
@@ -1408,7 +1448,7 @@ catch_cg(C, {var,R}, Le, Vdb, Bef, St0) ->
%% annotation must reflect this and make sure that the return
%% variable is allocated first.
%%
-%% put_list for constructing a cons is an atomic instruction
+%% put_list and put_map are atomic instructions, both of
%% which can safely resuse one of the source registers as target.
set_cg([{var,R}], {cons,Es}, Le, Vdb, Bef, St) ->
@@ -1448,6 +1488,55 @@ set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef,
%% Now generate the complete code for constructing the binary.
Code = cg_binary(PutCode, Target, Temp, Fail, MaxRegs, Le#l.a),
{Sis++Code,Aft,St};
+set_cg([{var,R}], {map,SrcMap,Es0}, Le, Vdb, Bef,
+ #cg{in_catch=InCatch,bfail=Bfail}=St) ->
+ Fail = {f,Bfail},
+ {Sis,Int0} =
+ case InCatch of
+ true -> adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb);
+ false -> {[],Bef}
+ end,
+ Line = line(Le#l.a),
+ SrcReg = case SrcMap of
+ {var,SrcVar} -> fetch_var(SrcVar, Int0);
+ _ -> SrcMap
+ end,
+ {Assoc,Exact} =
+ try
+ cg_map_pairs(Es0)
+ catch
+ throw:badarg ->
+ {[],[{{float,0.0},{atom,badarg}},
+ {{integer,0},{atom,badarg}}]}
+ end,
+ F = fun ({K,{var,V}}) -> [K,fetch_var(V, Int0)];
+ ({K,E}) -> [K,E]
+ end,
+ AssocList = flatmap(F, Assoc),
+ ExactList = flatmap(F, Exact),
+ Live0 = max_reg(Bef#sr.reg),
+ Int1 = clear_dead(Int0, Le#l.i, Vdb),
+ Aft = Bef#sr{reg=put_reg(R, Int1#sr.reg)},
+ Target = fetch_reg(R, Aft#sr.reg),
+ Code = [Line] ++
+ case {AssocList,ExactList} of
+ {[_|_],[]} ->
+ [{put_map_assoc,Fail,SrcReg,Target,Live0,{list,AssocList}}];
+ {[_|_],[_|_]} ->
+ Live = case Target of
+ {x,TargetX} when TargetX =:= Live0 ->
+ Live0 + 1;
+ _ ->
+ Live0
+ end,
+ [{put_map_assoc,Fail,SrcReg,Target,Live0,{list,AssocList}},
+ {put_map_exact,Fail,Target,Target,Live,{list,ExactList}}];
+ {[],[_|_]} ->
+ [{put_map_exact,Fail,SrcReg,Target,Live0,{list,ExactList}}];
+ {[],[]} ->
+ [{put_map_assoc,Fail,SrcReg,Target,Live0,{list,[]}}]
+ end,
+ {Sis++Code,Aft,St};
set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
%% Find a place for the return register first.
Int = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
@@ -1460,6 +1549,71 @@ set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
end,
{Ais,clear_dead(Int, Le#l.i, Vdb),St}.
+%% cg_map_pairs(MapPairs) -> {Assoc,Exact}
+%% Assoc = Exact = [{K,V}]
+%%
+%% Remove multiple assignments to the same key, and return
+%% one list key-value list with all keys that may or may not exist
+%% (Assoc), and one with keys that must exist (Exact).
+%%
+
+cg_map_pairs(Es0) ->
+ Es = cg_map_pairs_1(Es0, 0),
+ R0 = sofs:relation(Es),
+ R1 = sofs:relation_to_family(R0),
+ R2 = sofs:to_external(R1),
+
+ %% R2 is now [{KeyValue,[{Order,Op,OriginalKey,Value}]}]
+ R3 = [begin
+ %% The value for the last pair determines the value.
+ {_,_,_,V} = lists:last(Vs),
+ {Op,{_,SortOrder}=K} = map_pair_op_and_key(Vs),
+ {Op,{SortOrder,K,V}}
+ end || {_,Vs} <- R2],
+
+ %% R3 is now [{Op,{Key,Value}}]
+ R = termsort(R3),
+
+ %% R4 is now sorted with all alloc first in the list, followed by
+ %% all exact.
+ {Assoc,Exact} = lists:partition(fun({Op,_}) -> Op =:= assoc end, R),
+ {[{K,V} || {_,{_,K,V}} <- Assoc],
+ [{K,V} || {_,{_,K,V}} <- Exact]}.
+
+cg_map_pairs_1([{map_pair_assoc,{_,Kv}=K,V}|T], Order) ->
+ [{Kv,{Order,assoc,K,V}}|cg_map_pairs_1(T, Order+1)];
+cg_map_pairs_1([{map_pair_exact,{_,Kv}=K,V}|T], Order) ->
+ [{Kv,{Order,exact,K,V}}|cg_map_pairs_1(T, Order+1)];
+cg_map_pairs_1([], _) -> [].
+
+%% map_pair_op_and_key({_,Op,K,_}) -> {Operator,Key}
+%% Determine the operator and key to use. Throw a 'badarg'
+%% exception if there are contradictory exact updates.
+
+map_pair_op_and_key(L) ->
+ case [K || {_,exact,K,_} <- L] of
+ [K] ->
+ %% There is a single ':=' operator. Use that key.
+ {exact,K};
+ [K|T] ->
+ %% There is more than one ':=' operator. All of them
+ %% must have the same key.
+ case lists:all(fun(E) -> E =:= K end, T) of
+ true ->
+ {exact,K};
+ false ->
+ %% Some keys are different, e.g. 1 and 1.0.
+ throw(badarg)
+ end;
+ [] ->
+ %% Only '=>' operators. Use the first key in the list.
+ [{_,assoc,K,_}|_] = L,
+ {assoc,K}
+ end.
+
+termsort(Ls) ->
+ lists:sort(fun(A,B) -> erts_internal:cmp_term(A,B) < 0 end, Ls).
+
%%%
%%% Code generation for constructing binaries.
%%%
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 00:37:31 +0000