diff options
Diffstat (limited to 'lib/compiler')
| -rw-r--r-- | lib/compiler/src/beam_validator.erl | 47 |
1 files changed, 23 insertions, 24 deletions
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl index 7fc1396b00..1a1afab294 100644 --- a/lib/compiler/src/beam_validator.erl +++ b/lib/compiler/src/beam_validator.erl @@ -1783,14 +1783,19 @@ assert_not_literal(Literal) -> error({literal_not_allowed,Literal}). meet(Same, Same) -> Same; -meet({literal,_}=T1, T2) -> - meet_literal(T1, T2); -meet(T1, {literal,_}=T2) -> - meet_literal(T2, T1); meet(term, Other) -> Other; meet(Other, term) -> Other; +meet({literal,_}, {literal,_}) -> + none; +meet(T1, {literal,_}=T2) -> + meet(T2, T1); +meet({literal,_}=T1, T2) -> + case meet(get_literal_type(T1), T2) of + none -> none; + _ -> T1 + end; meet(T1, T2) -> case {erlang:min(T1, T2),erlang:max(T1, T2)} of {{atom,_}=A,{atom,[]}} -> A; @@ -1823,13 +1828,6 @@ meet(T1, T2) -> {_,_} -> none end. -%% Meets types of literals. -meet_literal({literal,_}=Lit, T) -> - meet_literal(T, get_literal_type(Lit)); -meet_literal(T1, T2) -> - %% We're done extracting the types, try merging them again. - meet(T1, T2). - meet_elements(Es1, Es2) -> Keys = maps:keys(Es1) ++ maps:keys(Es2), meet_elements_1(Keys, Es1, Es2, #{}). @@ -1993,22 +1991,23 @@ get_literal_type({integer,I}=T) when is_integer(I) -> T; get_literal_type({literal,[_|_]}) -> cons; get_literal_type({literal,Bitstring}) when is_bitstring(Bitstring) -> binary; get_literal_type({literal,Map}) when is_map(Map) -> map; -get_literal_type({literal,Tuple}) when is_tuple(Tuple) -> value_to_type(Tuple); +get_literal_type({literal,Tuple}) when is_tuple(Tuple) -> glt_1(Tuple); get_literal_type({literal,_}) -> term; get_literal_type(T) -> error({not_literal,T}). -value_to_type([]) -> nil; -value_to_type(A) when is_atom(A) -> {atom, A}; -value_to_type(F) when is_float(F) -> {float, F}; -value_to_type(I) when is_integer(I) -> {integer, I}; -value_to_type(T) when is_tuple(T) -> - {Es,_} = foldl(fun(Val, {Es0, Index}) -> - Type = value_to_type(Val), - Es = set_element_type({integer,Index}, Type, Es0), - {Es, Index + 1} - end, {#{}, 1}, tuple_to_list(T)), - {tuple, tuple_size(T), Es}; -value_to_type(L) -> {literal, L}. +glt_1([]) -> nil; +glt_1(A) when is_atom(A) -> {atom, A}; +glt_1(F) when is_float(F) -> {float, F}; +glt_1(I) when is_integer(I) -> {integer, I}; +glt_1(T) when is_tuple(T) -> + {Es,_} = foldl(fun(Val, {Es0, Index}) -> + Type = glt_1(Val), + Es = set_element_type({integer,Index}, Type, Es0), + {Es, Index + 1} + end, {#{}, 1}, tuple_to_list(T)), + {tuple, tuple_size(T), Es}; +glt_1(L) -> + {literal, L}. branch_state(0, #vst{}=Vst) -> %% If the instruction fails, the stack may be scanned |