diff options
Diffstat (limited to 'lib/hipe/icode/hipe_icode_range.erl')
| -rw-r--r-- | lib/hipe/icode/hipe_icode_range.erl | 311 |
1 files changed, 155 insertions, 156 deletions
diff --git a/lib/hipe/icode/hipe_icode_range.erl b/lib/hipe/icode/hipe_icode_range.erl index ba5fa1bfd7..287b1c80fe 100644 --- a/lib/hipe/icode/hipe_icode_range.erl +++ b/lib/hipe/icode/hipe_icode_range.erl @@ -1,9 +1,5 @@ %% -*- erlang-indent-level: 2 -*- %% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2007-2014. All Rights Reserved. -%% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. %% You may obtain a copy of the License at @@ -16,8 +12,6 @@ %% See the License for the specific language governing permissions and %% limitations under the License. %% -%% %CopyrightEnd% -%% %%%------------------------------------------------------------------- %%% File : hipe_icode_range.erl %%% Author : Per Gustafsson <[email protected]> @@ -73,8 +67,8 @@ -type final_fun() :: fun((mfa(), [range()]) -> 'ok'). -type data() :: {mfa(), args_fun(), call_fun(), final_fun()}. -type label() :: non_neg_integer(). --type info() :: gb_trees:tree(). --type work_list() :: {[label()], [label()], sets:set()}. +-type info() :: map(). +-type work_list() :: {[label()], [label()], set(label())}. -type variable() :: #icode_variable{}. -type annotated_variable() :: #icode_variable{}. -type argument() :: #icode_const{} | variable(). @@ -82,13 +76,13 @@ -type instr_split_info() :: {icode_instr(), [{label(),info()}]}. -type last_instr_return() :: {instr_split_info(), range()}. --record(state, {info_map = gb_trees:empty() :: info(), - counter = dict:new() :: dict:dict(), - cfg :: cfg(), - liveness = gb_trees:empty() :: gb_trees:tree(), +-record(state, {info_map = #{} :: info(), + cfg :: cfg(), + liveness :: hipe_icode_ssa:liveness(), ret_type :: range(), lookup_fun :: call_fun(), result_action :: final_fun()}). +-type state() :: #state{}. -define(WIDEN, 1). @@ -172,7 +166,7 @@ analyse(Cfg, Data) -> catch throw:no_input -> ok end. --spec safe_analyse(cfg(), data()) -> #state{}. +-spec safe_analyse(cfg(), data()) -> state(). safe_analyse(CFG, Data={MFA,_,_,_}) -> State = state__init(CFG, Data), @@ -181,27 +175,26 @@ safe_analyse(CFG, Data={MFA,_,_,_}) -> (state__result_action(NewState))(MFA, [state__ret_type(NewState)]), NewState. --spec rewrite_blocks(#state{}) -> #state{}. +-spec rewrite_blocks(state()) -> state(). rewrite_blocks(State) -> CFG = state__cfg(State), Start = hipe_icode_cfg:start_label(CFG), - rewrite_blocks([Start], State, [Start]). + rewrite_blocks([Start], State, set_from_list([Start])). --spec rewrite_blocks([label()], #state{}, [label()]) -> #state{}. +-spec rewrite_blocks([label()], state(), set(label())) -> state(). rewrite_blocks([Next|Rest], State, Visited) -> Info = state__info_in(State, Next), {NewState, NewLabels} = analyse_block(Next, Info, State, true), - NewLabelsSet = ordsets:from_list(NewLabels), - RealNew = ordsets:subtract(NewLabelsSet, Visited), - NewVisited = ordsets:union([RealNew, Visited, [Next]]), - NewWork = ordsets:union([RealNew, Rest]), + RealNew = not_visited(NewLabels, Visited), + NewVisited = set_union(set_from_list(RealNew), Visited), + NewWork = RealNew ++ Rest, rewrite_blocks(NewWork, NewState, NewVisited); rewrite_blocks([], State, _) -> State. --spec analyse_blocks(#state{}, work_list()) -> #state{}. +-spec analyse_blocks(state(), work_list()) -> state(). analyse_blocks(State, Work) -> case get_work(Work) of @@ -218,7 +211,7 @@ analyse_blocks(State, Work) -> analyse_blocks(NewState, NewWork2) end. --spec analyse_block(label(), info(), #state{}, boolean()) -> {#state{}, [label()]}. +-spec analyse_block(label(), info(), state(), boolean()) -> {state(), [label()]}. analyse_block(Label, Info, State, Rewrite) -> BB = state__bb(State, Label), @@ -399,14 +392,17 @@ widen(#range{range=Old}, #range{range=New}, T = #range{range=Wide}) -> -spec analyse_call(#icode_call{}, call_fun()) -> #icode_call{}. analyse_call(Call, LookupFun) -> + Args = hipe_icode:args(Call), + Fun = hipe_icode:call_fun(Call), + Type = hipe_icode:call_type(Call), + %% This call has side-effects (it might call LookupFun which sends messages to + %% hipe_icode_coordinator to update the argument ranges of Fun), and must thus + %% not be moved into the case statement. + DstRanges = analyse_call_or_enter_fun(Fun, Args, Type, LookupFun), case hipe_icode:call_dstlist(Call) of [] -> Call; Dsts -> - Args = hipe_icode:args(Call), - Fun = hipe_icode:call_fun(Call), - Type = hipe_icode:call_type(Call), - DstRanges = analyse_call_or_enter_fun(Fun, Args, Type, LookupFun), NewDefs = [update_info(Var, R) || {Var,R} <- lists:zip(Dsts, DstRanges)], hipe_icode:subst_defines(lists:zip(Dsts, NewDefs), Call) end. @@ -612,36 +608,32 @@ analyse_if(If, Info, Rewrite) -> {#icode_goto{} | #icode_if{}, [{label(), info()}]}. analyse_sane_if(If, Info, [Arg1, Arg2], [Range1, Range2], Rewrite) -> - case normalize_name(hipe_icode:if_op(If)) of - '>' -> - {TrueRange2, TrueRange1, FalseRange2, FalseRange1} = - range_inequality_propagation(Range2, Range1); - '<' -> - {TrueRange1, TrueRange2, FalseRange1, FalseRange2} = + {TrueRange1, TrueRange2, FalseRange1, FalseRange2} = + case normalize_name(hipe_icode:if_op(If)) of + '>' -> + {TR2, TR1, FR2, FR1} = range_inequality_propagation(Range2, Range1), + {TR1, TR2, FR1, FR2}; + '<' -> range_inequality_propagation(Range1, Range2); - '>=' -> - {FalseRange1, FalseRange2, TrueRange1, TrueRange2} = - range_inequality_propagation(Range1, Range2); - '=<' -> - {FalseRange2, FalseRange1, TrueRange2, TrueRange1} = - range_inequality_propagation(Range2, Range1); - '=:=' -> - {TrueRange1, TrueRange2, FalseRange1, FalseRange2} = - range_equality_propagation(Range1, Range2); - '=/=' -> - {FalseRange1, FalseRange2, TrueRange1, TrueRange2} = - range_equality_propagation(Range1, Range2); - '==' -> - {TempTrueRange1, TempTrueRange2, FalseRange1, FalseRange2} = - range_equality_propagation(Range1, Range2), - TrueRange1 = set_other(TempTrueRange1, other(Range1)), - TrueRange2 = set_other(TempTrueRange2, other(Range2)); - '/=' -> - {TempFalseRange1, TempFalseRange2, TrueRange1, TrueRange2} = - range_equality_propagation(Range1, Range2), - FalseRange1 = set_other(TempFalseRange1, other(Range1)), - FalseRange2 = set_other(TempFalseRange2, other(Range2)) - end, + '>=' -> + {FR1, FR2, TR1, TR2} = range_inequality_propagation(Range1, Range2), + {TR1, TR2, FR1, FR2}; + '=<' -> + {FR2, FR1, TR2, TR1} = range_inequality_propagation(Range2, Range1), + {TR1, TR2, FR1, FR2}; + '=:=' -> + {TR1, TR2, FR1, FR2} = range_equality_propagation(Range1, Range2), + {TR1, TR2, FR1, FR2}; + '=/=' -> + {FR1, FR2, TR1, TR2} = range_equality_propagation(Range1, Range2), + {TR1, TR2, FR1, FR2}; + '==' -> + {TR1, TR2, FR1, FR2} = range_equality_propagation(Range1, Range2), + {set_other(TR1,other(Range1)), set_other(TR2,other(Range2)), FR1, FR2}; + '/=' -> + {FR1, FR2, TR1, TR2} = range_equality_propagation(Range1, Range2), + {TR1, TR2, set_other(FR1,other(Range1)), set_other(FR2,other(Range2))} + end, %% io:format("TR1 = ~w\nTR2 = ~w\n", [TrueRange1, TrueRange2]), True = case lists:all(fun range__is_none/1, [TrueRange1, TrueRange2]) of @@ -694,26 +686,24 @@ normalize_name(Name) -> -spec range_equality_propagation(range(), range()) -> {range(), range(), range(), range()}. -range_equality_propagation(Range_1, Range_2) -> - True_range = inf(Range_1, Range_2), - case {range(Range_1), range(Range_2)} of - {{N,N}, {N,N}} -> - False_range_1 = none_range(), - False_range_2 = none_range(); - {{N1,N1}, {N2,N2}} -> - False_range_1 = Range_1, - False_range_2 = Range_2; - {{N,N}, _} -> - False_range_1 = Range_1, - {_,False_range_2} = compare_with_integer(N, Range_2); - {_, {N,N}} -> - False_range_2 = Range_2, - {_,False_range_1} = compare_with_integer(N, Range_1); - {_, _} -> - False_range_1 = Range_1, - False_range_2 = Range_2 - end, - {True_range, True_range, False_range_1, False_range_2}. +range_equality_propagation(Range1, Range2) -> + TrueRange = inf(Range1, Range2), + {FalseRange1, FalseRange2} = + case {range(Range1), range(Range2)} of + {{N,N}, {N,N}} -> + {none_range(), none_range()}; + {{N1,N1}, {N2,N2}} -> + {Range1, Range2}; + {{N,N}, _} -> + {_,FR2} = compare_with_integer(N, Range2), + {Range1, FR2}; + {_, {N,N}} -> + {_,FR1} = compare_with_integer(N, Range1), + {FR1, Range2}; + {_, _} -> + {Range1, Range2} + end, + {TrueRange, TrueRange, FalseRange1, FalseRange2}. -spec range_inequality_propagation(range(), range()) -> {range(), range(), range(), range()}. @@ -779,18 +769,17 @@ analyse_type(Type, Info, Rewrite) -> TypeTest = hipe_icode:type_test(Type), [Arg|_] = hipe_icode:type_args(Type), OldVarRange = get_range_from_arg(Arg), - case TypeTest of - {integer, N} -> - {TrueRange,FalseRange} = compare_with_integer(N,OldVarRange); - integer -> - TrueRange = inf(any_range(), OldVarRange), - FalseRange = inf(none_range(), OldVarRange); - number -> - TrueRange = FalseRange = OldVarRange; - _ -> - TrueRange = inf(none_range(), OldVarRange), - FalseRange = OldVarRange - end, + {TrueRange, FalseRange} = + case TypeTest of + {integer, N} -> + compare_with_integer(N, OldVarRange); + integer -> + {inf(any_range(), OldVarRange), inf(none_range(), OldVarRange)}; + number -> + {OldVarRange, OldVarRange}; + _ -> + {inf(none_range(), OldVarRange), OldVarRange} + end, TrueLabel = hipe_icode:type_true_label(Type), FalseLabel = hipe_icode:type_false_label(Type), TrueInfo = enter_define({Arg, TrueRange}, Info), @@ -1201,14 +1190,12 @@ basic_type(#unsafe_update_element{}) -> not_analysed. analyse_bs_get_integer(Size, Flags, true) -> Signed = Flags band 4, - if Signed =:= 0 -> - Max = 1 bsl Size - 1, - Min = 0; - true -> - Max = 1 bsl (Size-1) - 1, - Min = -(1 bsl (Size-1)) - end, - {Min, Max}; + case Signed =:= 0 of + true -> + {0, inf_add(inf_bsl(1, Size), -1)}; % return {Min, Max} + false -> + {inf_inv(inf_bsl(1, Size-1)), inf_add(inf_bsl(1, Size-1), -1)} + end; analyse_bs_get_integer(Size, Flags, false) when is_integer(Size), is_integer(Flags) -> any_r(). @@ -1322,16 +1309,15 @@ range_rem(Range1, Range2) -> Min1_geq_zero = inf_geq(Min1, 0), Max1_leq_zero = inf_geq(0, Max1), Max_range2 = inf_max([inf_abs(Min2), inf_abs(Max2)]), - Max_range2_leq_zero = inf_geq(0, Max_range2), New_min = if Min1_geq_zero -> 0; - Max_range2_leq_zero -> Max_range2; - true -> inf_inv(Max_range2) + Max_range2 =:= 0 -> 0; + true -> inf_add(inf_inv(Max_range2), 1) end, New_max = if Max1_leq_zero -> 0; - Max_range2_leq_zero -> inf_inv(Max_range2); - true -> Max_range2 + Max_range2 =:= 0 -> 0; + true -> inf_add(Max_range2, -1) end, range_init({New_min, New_max}, false). @@ -1653,7 +1639,7 @@ inf_bsl(Number1, Number2) when is_integer(Number1), is_integer(Number2) -> %% State --spec state__init(cfg(), data()) -> #state{}. +-spec state__init(cfg(), data()) -> state(). state__init(Cfg, {MFA, ArgsFun, CallFun, FinalFun}) -> Start = hipe_icode_cfg:start_label(Cfg), @@ -1669,26 +1655,26 @@ state__init(Cfg, {MFA, ArgsFun, CallFun, FinalFun}) -> false -> NewParams = lists:zipwith(fun update_info/2, Params, Ranges), NewCfg = hipe_icode_cfg:params_update(Cfg, NewParams), - Info = enter_defines(NewParams, gb_trees:empty()), - InfoMap = gb_trees:insert({Start, in}, Info, gb_trees:empty()), + Info = enter_defines(NewParams, #{}), + InfoMap = #{{Start, in} => Info}, #state{info_map=InfoMap, cfg=NewCfg, liveness=Liveness, ret_type=none_type(), lookup_fun=CallFun, result_action=FinalFun} end. --spec state__cfg(#state{}) -> cfg(). +-spec state__cfg(state()) -> cfg(). state__cfg(#state{cfg=Cfg}) -> Cfg. --spec state__bb(#state{}, label()) -> bb(). +-spec state__bb(state(), label()) -> bb(). state__bb(#state{cfg=Cfg}, Label) -> BB = hipe_icode_cfg:bb(Cfg, Label), true = hipe_bb:is_bb(BB), % Just an assert BB. --spec state__bb_add(#state{}, label(), bb()) -> #state{}. +-spec state__bb_add(state(), label(), bb()) -> state(). state__bb_add(S=#state{cfg=Cfg}, Label, BB) -> NewCfg = hipe_icode_cfg:bb_add(Cfg, Label, BB), @@ -1708,7 +1694,7 @@ state__info_in(S, Label) -> state__info(S, {Label, in}). state__info(#state{info_map=IM}, Key) -> - gb_trees:get(Key, IM). + maps:get(Key, IM). state__update_info(State, LabelInfo, Rewrite) -> update_info(LabelInfo, State, [], Rewrite). @@ -1729,62 +1715,58 @@ update_info([], State, LabelAcc, _Rewrite) -> state__info_in_update(S=#state{info_map=IM,liveness=Liveness}, Label, Info) -> LabelIn = {Label, in}, - case gb_trees:lookup(LabelIn, IM) of - none -> + case IM of + #{LabelIn := OldInfo} -> + OldVars = maps:keys(OldInfo), + case join_info_in(OldVars, OldInfo, Info) of + fixpoint -> + fixpoint; + NewInfo -> + S#state{info_map=IM#{LabelIn := NewInfo}} + end; + _ -> LiveIn = hipe_icode_ssa:ssa_liveness__livein(Liveness, Label), NamesLiveIn = [hipe_icode:var_name(Var) || Var <- LiveIn, hipe_icode:is_var(Var)], - OldInfo = gb_trees:empty(), + OldInfo = #{}, case join_info_in(NamesLiveIn, OldInfo, Info) of fixpoint -> - S#state{info_map=gb_trees:insert(LabelIn, OldInfo, IM)}; + S#state{info_map=IM#{LabelIn => OldInfo}}; NewInfo -> - S#state{info_map=gb_trees:enter(LabelIn, NewInfo, IM)} - end; - {value, OldInfo} -> - OldVars = gb_trees:keys(OldInfo), - case join_info_in(OldVars, OldInfo, Info) of - fixpoint -> - fixpoint; - NewInfo -> - S#state{info_map=gb_trees:update(LabelIn, NewInfo, IM)} + S#state{info_map=IM#{LabelIn => NewInfo}} end end. join_info_in(Vars, OldInfo, NewInfo) -> - case join_info_in(Vars, OldInfo, NewInfo, gb_trees:empty(), false) of + case join_info_in(Vars, OldInfo, NewInfo, #{}, false) of {Res, true} -> Res; {_, false} -> fixpoint end. join_info_in([Var|Left], Info1, Info2, Acc, Changed) -> - Type1 = gb_trees:lookup(Var, Info1), - Type2 = gb_trees:lookup(Var, Info2), - case {Type1, Type2} of - {none, none} -> - NewTree = gb_trees:insert(Var, none_type(), Acc), - join_info_in(Left, Info1, Info2, NewTree, true); - {none, {value, Val}} -> - NewTree = gb_trees:insert(Var, Val, Acc), - join_info_in(Left, Info1, Info2, NewTree, true); - {{value, Val}, none} -> - NewTree = gb_trees:insert(Var, Val, Acc), - join_info_in(Left, Info1, Info2, NewTree, Changed); - {{value, Val}, {value, Val}} -> - NewTree = gb_trees:insert(Var, Val, Acc), + case {Info1, Info2} of + {#{Var := Val}, #{Var := Val}} -> + NewTree = Acc#{Var => Val}, join_info_in(Left, Info1, Info2, NewTree, Changed); - {{value, Val1}, {value, Val2}} -> - NewVal = + {#{Var := Val1}, #{Var := Val2}} -> + {NewChanged, NewVal} = case sup(Val1, Val2) of Val1 -> - NewChanged = Changed, - Val1; + {Changed, Val1}; Val -> - NewChanged = true, - Val + {true, Val} end, - NewTree = gb_trees:insert(Var, NewVal, Acc), - join_info_in(Left, Info1, Info2, NewTree, NewChanged) + NewTree = Acc#{Var => NewVal}, + join_info_in(Left, Info1, Info2, NewTree, NewChanged); + {_, #{Var := Val}} -> + NewTree = Acc#{Var => Val}, + join_info_in(Left, Info1, Info2, NewTree, true); + {#{Var := Val}, _} -> + NewTree = Acc#{Var => Val}, + join_info_in(Left, Info1, Info2, NewTree, Changed); + {_, _} -> + NewTree = Acc#{Var => none_type()}, + join_info_in(Left, Info1, Info2, NewTree, true) end; join_info_in([], _Info1, _Info2, Acc, NewChanged) -> {Acc, NewChanged}. @@ -1796,7 +1778,7 @@ enter_defines([], Info) -> Info. enter_define({PossibleVar, Range = #range{}}, Info) -> case hipe_icode:is_var(PossibleVar) of true -> - gb_trees:enter(hipe_icode:var_name(PossibleVar), Range, Info); + Info#{hipe_icode:var_name(PossibleVar) => Range}; false -> Info end; @@ -1805,7 +1787,7 @@ enter_define(PossibleVar, Info) -> true -> case hipe_icode:variable_annotation(PossibleVar) of {range_anno, #ann{range=Range}, _} -> - gb_trees:enter(hipe_icode:var_name(PossibleVar), Range, Info); + Info#{hipe_icode:var_name(PossibleVar) => Range}; _ -> Info end; @@ -1820,11 +1802,10 @@ enter_vals(Ins, Info) -> lookup(PossibleVar, Info) -> case hipe_icode:is_var(PossibleVar) of true -> - case gb_trees:lookup(hipe_icode:var_name(PossibleVar), Info) of - none -> - none_type(); - {value, Val} -> - Val + PossibleVarName = hipe_icode:var_name(PossibleVar), + case Info of + #{PossibleVarName := Val} -> Val; + _ -> none_type() end; false -> none_type() @@ -1838,10 +1819,10 @@ lookup(PossibleVar, Info) -> init_work(State) -> %% Labels = hipe_icode_cfg:reverse_postorder(state__cfg(State)), Labels = [hipe_icode_cfg:start_label(state__cfg(State))], - {Labels, [], sets:from_list(Labels)}. + {Labels, [], set_from_list(Labels)}. get_work({[Label|Left], List, Set}) -> - NewWork = {Left, List, sets:del_element(Label, Set)}, + NewWork = {Left, List, maps:remove(Label, Set)}, {Label, NewWork}; get_work({[], [], _Set}) -> fixpoint; @@ -1849,12 +1830,12 @@ get_work({[], List, Set}) -> get_work({lists:reverse(List), [], Set}). add_work(Work = {List1, List2, Set}, [Label|Left]) -> - case sets:is_element(Label, Set) of - true -> + case Set of + #{Label := _} -> add_work(Work, Left); - false -> + _ -> %% io:format("Adding work: ~w\n", [Label]), - add_work({List1, [Label|List2], sets:add_element(Label, Set)}, Left) + add_work({List1, [Label|List2], Set#{Label => []}}, Left) end; add_work(Work, []) -> Work. @@ -1969,3 +1950,21 @@ next_down_limit(X) when is_integer(X), X > -16#8000000 -> -16#8000000; next_down_limit(X) when is_integer(X), X > -16#80000000 -> -16#80000000; next_down_limit(X) when is_integer(X), X > -16#800000000000000 -> -16#800000000000000; next_down_limit(_X) -> neg_inf. + +%%-------------------------------------------------------------------- +%% Sets + +-type set(E) :: #{E => []}. + +set_from_list([]) -> #{}; +set_from_list(L) -> + maps:from_list([{E, []} || E <- L]). + +not_visited([], _) -> []; +not_visited([E|T], M) -> + case M of + #{E := []} -> not_visited(T, M); + _ -> [E|not_visited(T, M)] + end. + +set_union(A, B) -> maps:merge(A, B). |