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-rw-r--r--lib/compiler/test/match_SUITE.erl161
1 files changed, 154 insertions, 7 deletions
diff --git a/lib/compiler/test/match_SUITE.erl b/lib/compiler/test/match_SUITE.erl
index 72e5356a8d..94bfbb0efe 100644
--- a/lib/compiler/test/match_SUITE.erl
+++ b/lib/compiler/test/match_SUITE.erl
@@ -25,7 +25,7 @@
match_in_call/1,untuplify/1,shortcut_boolean/1,letify_guard/1,
selectify/1,deselectify/1,underscore/1,match_map/1,map_vars_used/1,
coverage/1,grab_bag/1,literal_binary/1,
- unary_op/1]).
+ unary_op/1,eq_types/1,match_after_return/1]).
-include_lib("common_test/include/ct.hrl").
@@ -40,7 +40,8 @@ groups() ->
match_in_call,untuplify,
shortcut_boolean,letify_guard,selectify,deselectify,
underscore,match_map,map_vars_used,coverage,
- grab_bag,literal_binary,unary_op]}].
+ grab_bag,literal_binary,unary_op,eq_types,
+ match_after_return]}].
init_per_suite(Config) ->
@@ -254,6 +255,8 @@ non_matching_aliases(_Config) ->
none = mixed_aliases([d]),
none = mixed_aliases({a,42}),
none = mixed_aliases(42),
+ none = mixed_aliases(<<6789:16>>),
+ none = mixed_aliases(#{key=>value}),
{'EXIT',{{badmatch,42},_}} = (catch nomatch_alias(42)),
{'EXIT',{{badmatch,job},_}} = (catch entirely()),
@@ -279,6 +282,16 @@ mixed_aliases(<<X:8>> = x) -> {a,X};
mixed_aliases([b] = <<X:8>>) -> {b,X};
mixed_aliases(<<X:8>> = {a,X}) -> {c,X};
mixed_aliases([X] = <<X:8>>) -> {d,X};
+mixed_aliases(<<X:16>> = X) -> {e,X};
+mixed_aliases(X = <<X:16>>) -> {f,X};
+mixed_aliases(<<X:16,_/binary>> = X) -> {g,X};
+mixed_aliases(X = <<X:16,_/binary>>) -> {h,X};
+mixed_aliases(X = #{key:=X}) -> {i,X};
+mixed_aliases(#{key:=X} = X) -> {j,X};
+mixed_aliases([X] = #{key:=X}) -> {k,X};
+mixed_aliases(#{key:=X} = [X]) -> {l,X};
+mixed_aliases({a,X} = #{key:=X}) -> {m,X};
+mixed_aliases(#{key:=X} = {a,X}) -> {n,X};
mixed_aliases(_) -> none.
nomatch_alias(I) ->
@@ -456,6 +469,7 @@ letify_guard(A, B) ->
selectify(Config) when is_list(Config) ->
integer = sel_different_types({r,42}),
atom = sel_different_types({r,forty_two}),
+ float = sel_different_types({r,100.0}),
none = sel_different_types({r,18}),
{'EXIT',_} = (catch sel_different_types([a,b,c])),
@@ -466,12 +480,15 @@ selectify(Config) when is_list(Config) ->
integer42 = sel_same_value2(42),
integer43 = sel_same_value2(43),
error = sel_same_value2(44),
+
ok.
sel_different_types({r,_}=T) when element(2, T) =:= forty_two ->
atom;
sel_different_types({r,_}=T) when element(2, T) =:= 42 ->
integer;
+sel_different_types({r,_}=T) when element(2, T) =:= 100.0 ->
+ float;
sel_different_types({r,_}) ->
none.
@@ -489,9 +506,8 @@ sel_same_value2(V) when V =:= 42; V =:= 43 ->
sel_same_value2(_) ->
error.
-%% Test deconstruction of select_val instructions in beam_peep into
-%% regular tests with just one possible value left. Hitting proper cases
-%% in beam_peep relies on unification of labels by beam_jump.
+%% Test deconstruction of select_val instructions to regular tests
+%% with zero or one values left.
deselectify(Config) when is_list(Config) ->
one_or_other = desel_tuple_arity({1}),
@@ -512,7 +528,31 @@ deselectify(Config) when is_list(Config) ->
one_or_other = dsel_atom_typecheck(one),
two = dsel_atom_typecheck(two),
- one_or_other = dsel_atom_typecheck(three).
+ one_or_other = dsel_atom_typecheck(three),
+
+ %% Cover deconstruction of select_val instructions in
+ %% beam_peep.
+
+ stop = dsel_peek_0(stop),
+ ignore = dsel_peek_0(ignore),
+ Config = dsel_peek_0(Config),
+
+ stop = dsel_peek_1(stop, any),
+ Config = dsel_peek_1(ignore, Config),
+ other = dsel_peek_1(other, ignored),
+
+ 0 = dsel_peek_2(0, any),
+ Config = dsel_peek_2(1, Config),
+ 2 = dsel_peek_2(2, ignored),
+
+ true = dsel_peek_3(true),
+ false = dsel_peek_3(false),
+ {error,Config} = dsel_peek_3(Config),
+
+ ok.
+
+%% The following will be optimized by the sharing optimizations
+%% in beam_ssa_opt.
desel_tuple_arity(Tuple) when is_tuple(Tuple) ->
case Tuple of
@@ -549,6 +589,39 @@ dsel_atom_typecheck(Val) when is_atom(Val) ->
_ -> one_or_other
end.
+%% The following functions are carefully crafted so that the sharing
+%% optimizations in beam_ssa_opt can't be applied. After applying the
+%% beam_jump:eliminate_moves/1 optimization and beam_clean:clean_labels/1
+%% has unified labels, beam_peep is able to optimize these functions.
+
+dsel_peek_0(A0) ->
+ case id(A0) of
+ stop -> stop;
+ ignore -> ignore;
+ A -> A
+ end.
+
+dsel_peek_1(A0, B) ->
+ case id(A0) of
+ stop -> stop;
+ ignore -> B;
+ A -> A
+ end.
+
+dsel_peek_2(A0, B) ->
+ case id(A0) of
+ 0 -> 0;
+ 1 -> B;
+ A -> A
+ end.
+
+dsel_peek_3(A0) ->
+ case id(A0) of
+ true -> true;
+ false -> false;
+ Other -> {error,Other}
+ end.
+
underscore(Config) when is_list(Config) ->
case Config of
[] ->
@@ -591,13 +664,26 @@ do_map_vars_used(X, Y, Map) ->
Val
end.
+-record(coverage_id, {bool=false,id}).
coverage(Config) when is_list(Config) ->
%% Cover beam_dead.
ok = coverage_1(x, a),
ok = coverage_1(x, b),
%% Cover sys_pre_expand.
- ok = coverage_3("abc").
+ ok = coverage_3("abc"),
+
+ %% Cover beam_ssa_dead.
+ {expr,key} = coverage_4([literal,get], [[expr,key]]),
+ {expr,key} = coverage_4([expr,key], []),
+
+ a = coverage_5([8,8,8], #coverage_id{bool=true}),
+ b = coverage_5([], #coverage_id{bool=true}),
+
+ %% Cover beam_ssa_opt.
+ ok = coverage_6(),
+
+ ok.
coverage_1(B, Tag) ->
case Tag of
@@ -610,6 +696,37 @@ coverage_2(2, b, x) -> ok.
coverage_3([$a]++[]++"bc") -> ok.
+%% Cover beam_ssa_dead:eval_type_test_1(is_nonempty_list, Arg).
+coverage_4([literal,get], [Expr]) ->
+ coverage_4(Expr, []);
+coverage_4([Expr,Key], []) ->
+ {Expr,Key}.
+
+%% Cover beam_ssa_dead:eval_type_test_1(is_tagged_tuple, Arg).
+coverage_5(Config, TermId)
+ when TermId =:= #coverage_id{bool=true},
+ Config =:= [8,8,8] ->
+ a;
+coverage_5(_Config, #coverage_id{bool=true}) ->
+ b.
+
+coverage_6() ->
+ X = 17,
+ case
+ case id(1) > 0 of
+ true ->
+ 17;
+ false ->
+ 42
+ end
+ of
+ X ->
+ ok;
+ V ->
+ %% Cover beam_ssa_opt:make_literal/2.
+ error([error,X,V])
+ end.
+
grab_bag(_Config) ->
[_|T] = id([a,b,c]),
[b,c] = id(T),
@@ -754,5 +871,35 @@ unary_op_1(Vop@1) ->
end
end.
+eq_types(_Config) ->
+ Ref = make_ref(),
+ Ref = eq_types(Ref, any),
+ ok.
+
+eq_types(A, B) ->
+ %% {put_tuple2,{y,0},{list,[{x,0},{x,1}]}}.
+ Term0 = {A, B},
+ Term = id(Term0),
+
+ %% {test,is_eq_exact,{f,3},[{y,0},{x,0}]}.
+ %% Here beam_validator must infer that {x,0} has the
+ %% same type as {y,0}.
+ Term = Term0,
+
+ %% {get_tuple_element,{x,0},0,{x,0}}.
+ {Ref22,_} = Term,
+
+ Ref22.
+
+match_after_return(Config) when is_list(Config) ->
+ %% The return type of the following call will never match the 'wont_happen'
+ %% clauses below, and the beam_ssa_type was clever enough to see that but
+ %% didn't remove the blocks, so it crashed when trying to extract A.
+ ok = case mar_test_tuple(erlang:unique_integer()) of
+ {gurka, never_matches, A} -> {wont_happen, A};
+ _ -> ok
+ end.
+
+mar_test_tuple(I) -> {gurka, I}.
id(I) -> I.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 15:27:38 +0000