aboutsummaryrefslogtreecommitdiffstats
path: root/lib/compiler/src/v3_codegen.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/compiler/src/v3_codegen.erl')
-rw-r--r--lib/compiler/src/v3_codegen.erl177
1 files changed, 60 insertions, 117 deletions
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index c8735a76e8..f1331d1fe7 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -459,7 +459,7 @@ basic_block([Le|Les], Acc) ->
%% 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,_,{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)};
@@ -928,7 +928,7 @@ select_extract_tuple(Src, Vs, I, Vdb, Bef, 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) ->
+ 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}.
@@ -938,22 +938,39 @@ select_map_val(V, Es, B, Fail, I, Vdb, Bef, St0) ->
{Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
{Eis++Bis,Aft,St2}.
+select_extract_map(_, [], _, _, _, Bef, St) -> {[],Bef,St};
select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
- F = fun ({map_pair,Key,{var,V}}, Int0) ->
- Rsrc = fetch_var(Src, Int0),
+ %% First split the instruction flow
+ %% We want one set of each
+ %% 1) has_map_fields (no target registers)
+ %% 2) get_map_elements (with target registers)
+ %% Assume keys are term-sorted
+ Rsrc = fetch_var(Src, Bef),
+
+ {{HasKs,GetVs},Aft} = lists:foldr(fun
+ ({map_pair,Key,{var,V}},{{HasKsi,GetVsi},Int0}) ->
case vdb_find(V, Vdb) of
{V,_,L} when L =< I ->
- {[{test,has_map_field,{f,Fail},[Rsrc,Key]}],Int0};
+ {{[Key|HasKsi],GetVsi},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}
+ {{HasKsi,[Key,fetch_reg(V, Reg1)|GetVsi]},Int1}
end
- end,
- {Es,Aft} = flatmapfoldl(F, Bef, Vs),
- {Es,Aft,St}.
+ end, {{[],[]},Bef}, Vs),
+
+ Code = case {HasKs,GetVs} of
+ {[],[]} -> {[],Aft,St};
+ {HasKs,[]} ->
+ [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}}];
+ {[],GetVs} ->
+ [{get_map_elements, {f,Fail},Rsrc,{list,GetVs}}];
+ {HasKs,GetVs} ->
+ [{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}},
+ {get_map_elements, {f,Fail},Rsrc,{list,GetVs}}]
+ end,
+ {Code, 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
@@ -1488,55 +1505,35 @@ 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,
+set_cg([{var,R}], {map,Op,Map,Es}, 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,
+ SrcReg = cg_reg_arg(Map,Int0),
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};
+
+ %% The instruction needs to store keys in term sorted order
+ %% All keys has to be unique here
+ Pairs = map_pair_strip_and_termsort(Es),
+
+ %% fetch registers for values to be put into the map
+ List = flatmap(fun({K,V}) -> [K,cg_reg_arg(V,Int0)] end, Pairs),
+
+ Live = max_reg(Bef#sr.reg),
+ Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
+ Aft = clear_dead(Int1, Le#l.i, Vdb),
+ Target = fetch_reg(R, Int1#sr.reg),
+
+ I = case Op of
+ assoc -> put_map_assoc;
+ exact -> put_map_exact
+ end,
+ {Sis++[Line]++[{I,Fail,SrcReg,Target,Live,{list,List}}],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)},
@@ -1549,70 +1546,16 @@ 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).
+map_pair_strip_and_termsort(Es) ->
+ %% format in
+ %% [{map_pair,K,V}]
+ %% where K is for example {integer, 1} and we want to sort on 1.
+ Ls = [{K,V}||{_,K,V}<-Es],
+ lists:sort(fun ({{_,A},_}, {{_,B},_}) -> erts_internal:cmp_term(A,B) =< 0;
+ ({nil,_}, {{_,B},_}) -> [] =< B;
+ ({{_,A},_}, {nil,_}) -> A =< [];
+ ({nil,_}, {nil,_}) -> true
+ end, Ls).
%%%
%%% Code generation for constructing binaries.
@@ -2085,7 +2028,7 @@ load_vars(Vs, Regs) ->
foldl(fun ({var,V}, Rs) -> put_reg(V, Rs) end, Regs, Vs).
%% put_reg(Val, Regs) -> Regs.
-%% find_reg(Val, Regs) -> ok{r{R}} | error.
+%% find_reg(Val, Regs) -> {ok,r{R}} | error.
%% fetch_reg(Val, Regs) -> r{R}.
%% Functions to interface the registers.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 03:31:52 +0000