diff options
Diffstat (limited to 'lib/compiler/src/beam_ssa_type.erl')
| -rw-r--r-- | lib/compiler/src/beam_ssa_type.erl | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/lib/compiler/src/beam_ssa_type.erl b/lib/compiler/src/beam_ssa_type.erl index ab5ea4b1a4..ede57875e2 100644 --- a/lib/compiler/src/beam_ssa_type.erl +++ b/lib/compiler/src/beam_ssa_type.erl @@ -139,6 +139,19 @@ opt_is([#b_set{op=phi,dst=Dst,args=Args0}=I0|Is], Ds = Ds0#{Dst=>I}, opt_is(Is, Ts, Ds, Ls, Sub0, [I|Acc]) end; +opt_is([#b_set{op=succeeded,args=Args0,dst=Dst}=I], + Ts0, Ds0, Ls, Sub0, Acc) -> + Args = simplify_args(Args0, Sub0, Ts0), + Type = type(succeeded, Args, Ts0, Ds0), + case get_literal_from_type(Type) of + #b_literal{}=Lit -> + Sub = Sub0#{Dst=>Lit}, + opt_is([], Ts0, Ds0, Ls, Sub, Acc); + none -> + Ts = update_types(I, Ts0, Ds0), + Ds = Ds0#{Dst=>I}, + opt_is([], Ts, Ds, Ls, Sub0, [I|Acc]) + end; opt_is([#b_set{args=Args0,dst=Dst}=I0|Is], Ts0, Ds0, Ls, Sub0, Acc) -> Args = simplify_args(Args0, Sub0, Ts0), @@ -296,8 +309,6 @@ simplify(#b_set{op=put_tuple,args=Args}=I, _Ts) -> none -> I; List -> #b_literal{val=list_to_tuple(List)} end; -simplify(#b_set{op=succeeded,args=[#b_literal{}]}, _Ts) -> - #b_literal{val=true}; simplify(#b_set{op=wait_timeout,args=[#b_literal{val=infinity}]}=I, _Ts) -> I#b_set{op=wait,args=[]}; simplify(I, _Ts) -> I. @@ -627,6 +638,8 @@ type(succeeded, [#b_var{}=Src], Ts, Ds) -> #b_set{} -> t_boolean() end; +type(succeeded, [#b_literal{}], _Ts, _Ds) -> + t_atom(true); type(_, _, _, _) -> any. arith_op_type(Args, Ts) -> @@ -1205,10 +1218,8 @@ t_tuple_size(#t_tuple{size=Size,exact=true}) -> t_tuple_size(_) -> none. -is_singleton_type(#t_atom{elements=[_]}) -> true; -is_singleton_type(#t_integer{elements={V,V}}) -> true; -is_singleton_type(nil) -> true; -is_singleton_type(_) -> false. +is_singleton_type(Type) -> + get_literal_from_type(Type) =/= none. %% join(Type1, Type2) -> Type %% Return the "join" of Type1 and Type2. The join is a more general |