aboutsummaryrefslogtreecommitdiffstats
path: root/lib/compiler/src
diff options
context:
space:
mode:
Diffstat (limited to 'lib/compiler/src')
-rw-r--r--lib/compiler/src/beam_dead.erl23
-rw-r--r--lib/compiler/src/sys_pre_expand.erl18
-rw-r--r--lib/compiler/src/v3_core.erl24
3 files changed, 46 insertions, 19 deletions
diff --git a/lib/compiler/src/beam_dead.erl b/lib/compiler/src/beam_dead.erl
index 6f6d742293..3606af9d75 100644
--- a/lib/compiler/src/beam_dead.erl
+++ b/lib/compiler/src/beam_dead.erl
@@ -272,14 +272,18 @@ backward([{jump,{f,To}}=J|[{bif,Op,_,Ops,Reg}|Is]=Is0], D, Acc) ->
catch
throw:not_possible -> backward(Is0, D, [J|Acc])
end;
-backward([{test,bs_start_match2,F,_,[R,_],Ctxt}=I|Is], D,
+backward([{test,bs_start_match2,F,Live,[R,_]=Args,Ctxt}|Is], D,
[{test,bs_match_string,F,[Ctxt,Bs]},
{test,bs_test_tail2,F,[Ctxt,0]}|Acc0]=Acc) ->
+ {f,To0} = F,
case beam_utils:is_killed(Ctxt, Acc0, D) of
true ->
- Eq = {test,is_eq_exact,F,[R,{literal,Bs}]},
+ To = shortcut_bs_context_to_binary(To0, R, D),
+ Eq = {test,is_eq_exact,{f,To},[R,{literal,Bs}]},
backward(Is, D, [Eq|Acc0]);
false ->
+ To = shortcut_bs_start_match(To0, R, D),
+ I = {test,bs_start_match2,{f,To},Live,Args,Ctxt},
backward(Is, D, [I|Acc])
end;
backward([{test,bs_start_match2,{f,To0},Live,[Src|_]=Info,Dst}|Is], D, Acc) ->
@@ -551,6 +555,21 @@ shortcut_bs_start_match_1([{test,bs_start_match2,{f,To},_,[Reg|_],_}|_],
shortcut_bs_start_match_1(_, _, To, _) ->
To.
+%% shortcut_bs_context_to_binary(TargetLabel, Reg) -> TargetLabel
+%% If a bs_start_match2 instruction has been eliminated, the
+%% bs_context_to_binary instruction can be eliminated too.
+
+shortcut_bs_context_to_binary(To, Reg, D) ->
+ shortcut_bs_ctb_1(beam_utils:code_at(To, D), Reg, To, D).
+
+shortcut_bs_ctb_1([{bs_context_to_binary,Reg}|Is], Reg, To, D) ->
+ shortcut_bs_ctb_1(Is, Reg, To, D);
+shortcut_bs_ctb_1([{jump,{f,To}}|_], Reg, _, D) ->
+ Code = beam_utils:code_at(To, D),
+ shortcut_bs_ctb_1(Code, Reg, To, D);
+shortcut_bs_ctb_1(_, _, To, _) ->
+ To.
+
%% shortcut_rel_op(FailLabel, Operator, [Operand], D) -> FailLabel'
%% Try to shortcut the given test instruction. Example:
%%
diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl
index 7ab4e1845c..f996a2d2d7 100644
--- a/lib/compiler/src/sys_pre_expand.erl
+++ b/lib/compiler/src/sys_pre_expand.erl
@@ -520,9 +520,8 @@ new_fun_name(#expand{func=F,arity=A,fcount=I}=St, FName) ->
%% pattern_bin([Element], State) -> {[Element],[Variable],[UsedVar],State}.
-pattern_bin(Es0, St) ->
- Es1 = bin_expand_strings(Es0),
- foldr(fun (E, Acc) -> pattern_element(E, Acc) end, {[],St}, Es1).
+pattern_bin(Es, St) ->
+ foldr(fun (E, Acc) -> pattern_element(E, Acc) end, {[],St}, Es).
pattern_element({bin_element,Line,Expr0,Size0,Type0}, {Es,St0}) ->
{Expr1,St1} = pattern(Expr0, St0),
@@ -558,9 +557,8 @@ coerce_to_float(E, _) -> E.
%% expr_bin([Element], State) -> {[Element],State}.
-expr_bin(Es0, St) ->
- Es1 = bin_expand_strings(Es0),
- foldr(fun (E, Acc) -> bin_element(E, Acc) end, {[],St}, Es1).
+expr_bin(Es, St) ->
+ foldr(fun (E, Acc) -> bin_element(E, Acc) end, {[],St}, Es).
bin_element({bin_element,Line,Expr,Size,Type}, {Es,St0}) ->
{Expr1,St1} = expr(Expr, St0),
@@ -570,14 +568,6 @@ bin_element({bin_element,Line,Expr,Size,Type}, {Es,St0}) ->
{Size2,Type1} = make_bit_type(Line, Size1, Type),
{[{bin_element,Line,Expr1,Size2,Type1}|Es],St2}.
-bin_expand_strings(Es) ->
- foldr(fun ({bin_element,Line,{string,_,S},Sz,Ts}, Es1) ->
- foldr(fun (C, Es2) ->
- [{bin_element,Line,{char,Line,C},Sz,Ts}|Es2]
- end, Es1, S);
- (E, Es1) -> [E|Es1]
- end, [], Es).
-
%% new_var_name(State) -> {VarName,State}.
new_var_name(St) ->
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index d71411de80..634ec68736 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -901,7 +901,7 @@ try_after(As, St0) ->
expr_bin(Es0, Anno, St0) ->
case constant_bin(Es0) of
error ->
- {Es,Eps,St} = expr_bin_1(Es0, St0),
+ {Es,Eps,St} = expr_bin_1(bin_expand_strings(Es0), St0),
{#ibinary{anno=#a{anno=Anno},segments=Es},Eps,St};
Bin ->
{#c_literal{anno=Anno,val=Bin},[],St0}
@@ -923,7 +923,8 @@ constant_bin(Es) ->
constant_bin_1(Es) ->
verify_suitable_fields(Es),
EmptyBindings = erl_eval:new_bindings(),
- EvalFun = fun({integer,_,I}, B) -> {value,I,B};
+ EvalFun = fun({string,_,S}, B) -> {value,S,B};
+ ({integer,_,I}, B) -> {value,I,B};
({char,_,C}, B) -> {value,C,B};
({float,_,F}, B) -> {value,F,B};
({atom,_,undefined}, B) -> {value,undefined,B}
@@ -944,6 +945,9 @@ verify_suitable_fields([{bin_element,_,Val,SzTerm,Opts}|Es]) ->
end,
{unit,Unit} = keyfind(unit, 1, Opts),
case {SzTerm,Val} of
+ {{atom,_,undefined},{string,_,_}} ->
+ %% UTF-8/16/32.
+ ok;
{{atom,_,undefined},{char,_,_}} ->
%% UTF-8/16/32.
ok;
@@ -983,6 +987,14 @@ count_bits(Int) ->
count_bits_1(0, Bits) -> Bits;
count_bits_1(Int, Bits) -> count_bits_1(Int bsr 64, Bits+64).
+bin_expand_strings(Es) ->
+ foldr(fun ({bin_element,Line,{string,_,S},Sz,Ts}, Es1) ->
+ foldr(fun (C, Es2) ->
+ [{bin_element,Line,{char,Line,C},Sz,Ts}|Es2]
+ end, Es1, S);
+ (E, Es1) -> [E|Es1]
+ end, [], Es).
+
expr_bin_1(Es, St) ->
foldr(fun (E, {Ces,Esp,St0}) ->
{Ce,Ep,St1} = bitstr(E, St0),
@@ -1394,6 +1406,9 @@ bc_elem_size({bin,_,El}, St0) ->
bc_elem_size(_, _) ->
throw(impossible).
+bc_elem_size_1([{bin_element,_,{string,_,String},{integer,_,N},Flags}|Es], Bits, Vars) ->
+ {unit,U} = keyfind(unit, 1, Flags),
+ bc_elem_size_1(Es, Bits+U*N*length(String), Vars);
bc_elem_size_1([{bin_element,_,_,{integer,_,N},Flags}|Es], Bits, Vars) ->
{unit,U} = keyfind(unit, 1, Flags),
bc_elem_size_1(Es, Bits+U*N, Vars);
@@ -1513,6 +1528,9 @@ bc_list_length(_, _) ->
bc_bin_size({bin,_,Els}) ->
bc_bin_size_1(Els, 0).
+bc_bin_size_1([{bin_element,_,{string,_,String},{integer,_,Sz},Flags}|Els], N) ->
+ {unit,U} = keyfind(unit, 1, Flags),
+ bc_bin_size_1(Els, N+U*Sz*length(String));
bc_bin_size_1([{bin_element,_,_,{integer,_,Sz},Flags}|Els], N) ->
{unit,U} = keyfind(unit, 1, Flags),
bc_bin_size_1(Els, N+U*Sz);
@@ -1736,7 +1754,7 @@ pat_alias_map_pairs_1([]) -> [].
%% pat_bin([BinElement], State) -> [BinSeg].
-pat_bin(Ps, St) -> [pat_segment(P, St) || P <- Ps].
+pat_bin(Ps, St) -> [pat_segment(P, St) || P <- bin_expand_strings(Ps)].
pat_segment({bin_element,L,Val,Size,[Type,{unit,Unit}|Flags]}, St) ->
Anno = lineno_anno(L, St),
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-17 16:09:09 +0000