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-rw-r--r--lib/compiler/test/compile_SUITE.erl94
1 files changed, 92 insertions, 2 deletions
diff --git a/lib/compiler/test/compile_SUITE.erl b/lib/compiler/test/compile_SUITE.erl
index a2d3e2140b..e2988b18dc 100644
--- a/lib/compiler/test/compile_SUITE.erl
+++ b/lib/compiler/test/compile_SUITE.erl
@@ -32,7 +32,7 @@
other_output/1, kernel_listing/1, encrypted_abstr/1,
strict_record/1,
cover/1, env/1, core/1,
- core_roundtrip/1, asm/1,
+ core_roundtrip/1, asm/1, optimized_guards/1,
sys_pre_attributes/1, dialyzer/1,
warnings/1, pre_load_check/1, env_compiler_options/1
]).
@@ -49,7 +49,7 @@ all() ->
binary, makedep, cond_and_ifdef, listings, listings_big,
other_output, kernel_listing, encrypted_abstr,
strict_record,
- cover, env, core, core_roundtrip, asm,
+ cover, env, core, core_roundtrip, asm, optimized_guards,
sys_pre_attributes, dialyzer, warnings, pre_load_check,
env_compiler_options].
@@ -926,6 +926,96 @@ do_asm(Beam, Outdir) ->
error
end.
+%% Make sure that guards are fully optimized. Guards should
+%% should use 'test' instructions, not 'bif' instructions.
+
+optimized_guards(_Config) ->
+ TestBeams = get_unique_beam_files(),
+ test_lib:p_run(fun(F) -> do_opt_guards(F) end, TestBeams).
+
+do_opt_guards(Beam) ->
+ {ok,{M,[{abstract_code,{raw_abstract_v1,A}}]}} =
+ beam_lib:chunks(Beam, [abstract_code]),
+ try
+ {ok,M,Asm} = compile:forms(A, ['S']),
+ do_opt_guards_mod(Asm)
+ catch Class:Error ->
+ io:format("~p: ~p ~p\n~p\n",
+ [M,Class,Error,erlang:get_stacktrace()]),
+ error
+ end.
+
+do_opt_guards_mod({Mod,_Exp,_Attr,Asm,_NumLabels}) ->
+ case do_opt_guards_fs(Mod, Asm) of
+ [] ->
+ ok;
+ [_|_]=Bifs ->
+ io:format("ERRORS FOR ~p:\n~p\n", [Mod,Bifs]),
+ error
+ end.
+
+do_opt_guards_fs(Mod, [{function,Name,Arity,_,Is}|Fs]) ->
+ Bifs0 = do_opt_guards_fun(Is),
+
+ %% The compiler does not attempt to optimize 'xor'.
+ %% Therefore, ignore all functions that use 'xor' in
+ %% a guard.
+ Bifs = case lists:any(fun({bif,'xor',_,_,_}) -> true;
+ (_) -> false
+ end, Bifs0) of
+ true -> [];
+ false -> Bifs0
+ end,
+
+ %% Filter out the allowed exceptions.
+ FA = {Name,Arity},
+ case {Bifs,is_exception(Mod, FA)} of
+ {[_|_],true} ->
+ io:format("~p:~p/~p IGNORED:\n~p\n",
+ [Mod,Name,Arity,Bifs]),
+ do_opt_guards_fs(Mod, Fs);
+ {[_|_],false} ->
+ [{FA,Bifs}|do_opt_guards_fs(Mod, Fs)];
+ {[],false} ->
+ do_opt_guards_fs(Mod, Fs);
+ {[],true} ->
+ io:format("Redundant exception for ~p:~p/~p\n",
+ [Mod,Name,Arity]),
+ error(redundant)
+ end;
+do_opt_guards_fs(_, []) -> [].
+
+do_opt_guards_fun([{bif,Name,{f,F},As,_}=I|Is]) when F =/= 0 ->
+ Arity = length(As),
+ case erl_internal:comp_op(Name, Arity) orelse
+ erl_internal:bool_op(Name, Arity) orelse
+ erl_internal:new_type_test(Name, Arity) of
+ true ->
+ [I|do_opt_guards_fun(Is)];
+ false ->
+ do_opt_guards_fun(Is)
+ end;
+do_opt_guards_fun([_|Is]) ->
+ do_opt_guards_fun(Is);
+do_opt_guards_fun([]) -> [].
+
+is_exception(bs_match_SUITE, {matching_and_andalso_2,2}) -> true;
+is_exception(bs_match_SUITE, {matching_and_andalso_3,2}) -> true;
+is_exception(guard_SUITE, {'-complex_not/1-fun-4-',1}) -> true;
+is_exception(guard_SUITE, {'-complex_not/1-fun-5-',1}) -> true;
+is_exception(guard_SUITE, {basic_andalso_orelse,1}) -> true;
+is_exception(guard_SUITE, {bad_guards,1}) -> true;
+is_exception(guard_SUITE, {bad_guards_2,2}) -> true;
+is_exception(guard_SUITE, {bad_guards_3,2}) -> true;
+is_exception(guard_SUITE, {cqlc,4}) -> true;
+is_exception(guard_SUITE, {csemi7,3}) -> true;
+is_exception(guard_SUITE, {misc,1}) -> true;
+is_exception(guard_SUITE, {nested_not_2b,4}) -> true;
+is_exception(guard_SUITE, {tricky_1,2}) -> true;
+is_exception(map_SUITE, {map_guard_update,2}) -> true;
+is_exception(map_SUITE, {map_guard_update_variables,3}) -> true;
+is_exception(_, _) -> false.
+
sys_pre_attributes(Config) ->
DataDir = proplists:get_value(data_dir, Config),
File = filename:join(DataDir, "attributes.erl"),