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-rw-r--r--lib/compiler/src/v3_codegen.erl76
1 files changed, 24 insertions, 52 deletions
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index 409adcb546..6a825adbff 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -330,10 +330,8 @@ expr(#k_put{anno=A}=Put, I, _Vdb) ->
Put#k_put{anno=#l{i=I,a=A#k.a}};
expr(#k_break{anno=A}=Break, I, _Vdb) ->
Break#k_break{anno=#l{i=I,a=A#k.a}};
-expr(#k_guard_break{anno=A}=Break, I, Vdb) ->
- Locked = [V || {V,_,_} <- Vdb],
- L = #l{i=I,a=A#k.a},
- Break#k_guard_break{anno=L,locked=Locked};
+expr(#k_guard_break{anno=A}=Break, I, _Vdb) ->
+ Break#k_guard_break{anno=#l{i=I,a=A#k.a}};
expr(#k_return{anno=A}=Ret, I, _Vdb) ->
Ret#k_return{anno=#l{i=I,a=A#k.a}}.
@@ -357,14 +355,9 @@ match(#k_alt{anno=A,first=Kf,then=Kt}, Ls, I, Vdb0) ->
F = match(Kf, Ls, I+1, Vdb1),
T = match(Kt, Ls, I+1, Vdb1),
#k_alt{anno=[],first=F,then=T};
-match(#k_select{anno=A,var=V,types=Kts}=Select, Ls0, I, Vdb0) ->
- Vanno = get_kanno(V),
- Ls1 = case member(no_usage, Vanno) of
- false -> add_element(V#k_var.name, Ls0);
- true -> Ls0
- end,
- Vdb1 = use_vars(union(A#k.us, Ls1), I, Vdb0),
- Ts = [type_clause(Tc, Ls1, I+1, Vdb1) || Tc <- Kts],
+match(#k_select{anno=A,types=Kts}=Select, Ls, I, Vdb0) ->
+ Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
+ Ts = [type_clause(Tc, Ls, I+1, Vdb1) || Tc <- Kts],
Select#k_select{anno=[],types=Ts};
match(#k_guard{anno=A,clauses=Kcs}, Ls, I, Vdb0) ->
Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
@@ -499,8 +492,8 @@ cg(#k_return{anno=Le,args=Rs}, Vdb, Bef, St) ->
return_cg(Rs, Le, Vdb, Bef, St);
cg(#k_break{anno=Le,args=Bs}, Vdb, Bef, St) ->
break_cg(Bs, Le, Vdb, Bef, St);
-cg(#k_guard_break{anno=Le,args=Bs,locked=N}, Vdb, Bef, St) ->
- guard_break_cg(Bs, N, Le, Vdb, Bef, St);
+cg(#k_guard_break{anno=Le,args=Bs}, Vdb, Bef, St) ->
+ guard_break_cg(Bs, Le, Vdb, Bef, St);
cg(#cg_need_heap{h=H}, _Vdb, Bef, St) ->
{[{test_heap,H,max_reg(Bef#sr.reg)}],Bef,St}.
@@ -707,9 +700,6 @@ bsm_rename_ctx(#k_protected{arg=Ts0}=Prot, Old, New, _InProt) ->
InProt = true,
Ts = bsm_rename_ctx_list(Ts0, Old, New, InProt),
bsm_forget_var(Prot#k_protected{arg=Ts}, Old);
-bsm_rename_ctx(#k_match{body=Ms0}=Match, Old, New, InProt) ->
- Ms = bsm_rename_ctx(Ms0, Old, New, InProt),
- Match#k_match{body=Ms};
bsm_rename_ctx(#k_guard_match{body=Ms0}=Match, Old, New, InProt) ->
Ms = bsm_rename_ctx(Ms0, Old, New, InProt),
Match#k_guard_match{body=Ms};
@@ -726,9 +716,8 @@ bsm_rename_ctx(#cg_block{es=Es0}=Block, Old, New, true) ->
%% inside the block.
Es = bsm_rename_ctx_list(Es0, Old, New, true),
bsm_forget_var(Block#cg_block{es=Es}, Old);
-bsm_rename_ctx(#k_guard_break{locked=Locked0}=Break, Old, _New, _InProt) ->
- Locked = Locked0 -- [Old],
- bsm_forget_var(Break#k_guard_break{locked=Locked}, Old).
+bsm_rename_ctx(#k_guard_break{}=Break, Old, _New, _InProt) ->
+ bsm_forget_var(Break, Old).
bsm_rename_ctx_list([C|Cs], Old, New, InProt) ->
[bsm_rename_ctx(C, Old, New, InProt)|
@@ -1492,8 +1481,6 @@ guard_clause_cg(#k_guard_clause{anno=#l{vdb=Vdb},guard=G,body=B}, Fail, Bef, St0
guard_cg(#k_protected{arg=Ts,ret=Rs,anno=#l{i=I,vdb=Pdb}}, Fail, _Vdb, Bef, St) ->
protected_cg(Ts, Rs, Fail, I, Pdb, Bef, St);
-guard_cg(#cg_block{es=Ts,anno=#l{i=I,vdb=Bdb}}, Fail, _Vdb, Bef, St) ->
- guard_cg_list(Ts, Fail, I, Bdb, Bef, St);
guard_cg(#k_test{anno=#l{i=I},op=Test0,args=As,inverted=Inverted},
Fail, Vdb, Bef, St0) ->
#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=Test}} = Test0,
@@ -1511,6 +1498,18 @@ guard_cg(G, _Fail, Vdb, Bef, St) ->
%%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Aft}]),
{Gis,Aft,St1}.
+%% guard_cg_list([Kexpr], Fail, I, Vdb, StackReg, St) ->
+%% {[Ainstr],StackReg,St}.
+
+guard_cg_list(Kes, Fail, I, Vdb, Bef, St0) ->
+ {Keis,{Aft,St1}} =
+ flatmapfoldl(fun (Ke, {Inta,Sta}) ->
+ {Keis,Intb,Stb} =
+ guard_cg(Ke, Fail, Vdb, Inta, Sta),
+ {Keis,{Intb,Stb}}
+ end, {Bef,St0}, need_heap(Kes, I)),
+ {Keis,Aft,St1}.
+
%% protected_cg([Kexpr], [Ret], Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
%% Do a protected. Protecteds without return values are just done
%% for effect, the return value is not checked, success passes on to
@@ -1567,18 +1566,6 @@ test_cg(Test, As, Fail, I, Vdb, Bef, St) ->
Aft = clear_dead(Bef, I, Vdb),
{[beam_utils:bif_to_test(Test, Args, {f,Fail})],Aft,St}.
-%% guard_cg_list([Kexpr], Fail, I, Vdb, StackReg, St) ->
-%% {[Ainstr],StackReg,St}.
-
-guard_cg_list(Kes, Fail, I, Vdb, Bef, St0) ->
- {Keis,{Aft,St1}} =
- flatmapfoldl(fun (Ke, {Inta,Sta}) ->
- {Keis,Intb,Stb} =
- guard_cg(Ke, Fail, Vdb, Inta, Sta),
- {Keis,{Intb,Stb}}
- end, {Bef,St0}, need_heap(Kes, I)),
- {Keis,Aft,St1}.
-
%% match_fmf(Fun, LastFail, State, [Clause]) -> {Is,Aft,State}.
%% This is a special flatmapfoldl for match code gen where we
%% generate a "failure" label for each clause. The last clause uses
@@ -2340,13 +2327,12 @@ break_cg(Bs, Le, Vdb, Bef, St) ->
{Ms ++ [{jump,{f,St#cg.break}}],
Int#sr{reg=clear_regs(Int#sr.reg)},St}.
-guard_break_cg(Bs, Locked, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
- RegLocked = get_locked_regs(Reg0, Locked),
- #sr{reg=Reg1} = Int = clear_dead(Bef#sr{reg=RegLocked}, I, Vdb),
+guard_break_cg(Bs, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
+ #sr{reg=Reg1} = Int = clear_dead(Bef, I, Vdb),
Reg2 = trim_free(Reg1),
NumLocked = length(Reg2),
Moves0 = gen_moves(Bs, Bef, NumLocked, []),
- Moves = order_moves(Moves0, find_scratch_reg(RegLocked)),
+ Moves = order_moves(Moves0, find_scratch_reg(Reg0)),
{BreakVars,_} = mapfoldl(fun(_, RegNum) ->
{{RegNum,gbreakvar},RegNum+1}
end, length(Reg2), Bs),
@@ -2354,20 +2340,6 @@ guard_break_cg(Bs, Locked, #l{i=I}, Vdb, #sr{reg=Reg0}=Bef, St) ->
Aft = Int#sr{reg=Reg},
{Moves ++ [{jump,{f,St#cg.break}}],Aft,St}.
-get_locked_regs([R|Rs0], Preserve) ->
- case {get_locked_regs(Rs0, Preserve),R} of
- {[],{_,V}} ->
- case lists:member(V, Preserve) of
- true -> [R];
- false -> []
- end;
- {[],_} ->
- [];
- {Rs,_} ->
- [R|Rs]
- end;
-get_locked_regs([], _) -> [].
-
%% cg_reg_arg(Arg0, Info) -> Arg
%% cg_reg_args([Arg0], Info) -> [Arg]
%% Convert argument[s] into registers. Literal values are returned unchanged.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 12:14:36 +0000