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-rw-r--r--lib/compiler/test/match_SUITE.erl74
1 files changed, 72 insertions, 2 deletions
diff --git a/lib/compiler/test/match_SUITE.erl b/lib/compiler/test/match_SUITE.erl
index 35d2e8e91a..4b26a8dcdc 100644
--- a/lib/compiler/test/match_SUITE.erl
+++ b/lib/compiler/test/match_SUITE.erl
@@ -24,7 +24,8 @@
pmatch/1,mixed/1,aliases/1,non_matching_aliases/1,
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]).
+ coverage/1,grab_bag/1,literal_binary/1,
+ unary_op/1]).
-include_lib("common_test/include/ct.hrl").
@@ -40,7 +41,7 @@ groups() ->
match_in_call,untuplify,
shortcut_boolean,letify_guard,selectify,deselectify,
underscore,match_map,map_vars_used,coverage,
- grab_bag,literal_binary]}].
+ grab_bag,literal_binary,unary_op]}].
init_per_suite(Config) ->
@@ -662,5 +663,74 @@ literal_binary_match(_, <<"x">>) -> 2;
literal_binary_match(_, <<"y">>) -> 3;
literal_binary_match(_, _) -> fail.
+unary_op(Config) ->
+ %% ERL-514. This test case only verifies that the code
+ %% calculates the correct result, not that the generated
+ %% code is optimial.
+
+ {non_associative,30} = unary_op_1('&'),
+ {non_associative,300} = unary_op_1('^'),
+ {non_associative,300} = unary_op_1('not'),
+ {non_associative,300} = unary_op_1('+'),
+ {non_associative,300} = unary_op_1('-'),
+ {non_associative,300} = unary_op_1('~~~'),
+ {non_associative,300} = unary_op_1('!'),
+ {non_associative,320} = unary_op_1('@'),
+
+ error = unary_op_1(Config),
+ error = unary_op_1(abc),
+ error = unary_op_1(42),
+
+ ok.
+
+unary_op_1(Vop@1) ->
+ %% If all optimizations are working as they should, there should
+ %% be no stack frame and all '=:=' tests should be coalesced into
+ %% a single select_val instruction.
+
+ case Vop@1 =:= '&' of
+ true ->
+ {non_associative,30};
+ false ->
+ case
+ case Vop@1 =:= '^' of
+ true ->
+ true;
+ false ->
+ case Vop@1 =:= 'not' of
+ true ->
+ true;
+ false ->
+ case Vop@1 =:= '+' of
+ true ->
+ true;
+ false ->
+ case Vop@1 =:= '-' of
+ true ->
+ true;
+ false ->
+ case Vop@1 =:= '~~~' of
+ true ->
+ true;
+ false ->
+ Vop@1 =:= '!'
+ end
+ end
+ end
+ end
+ end
+ of
+ true ->
+ {non_associative,300};
+ false ->
+ case Vop@1 =:= '@' of
+ true ->
+ {non_associative,320};
+ false ->
+ error
+ end
+ end
+ end.
+
id(I) -> I.