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-rw-r--r--lib/hipe/flow/liveness.inc22
1 files changed, 12 insertions, 10 deletions
diff --git a/lib/hipe/flow/liveness.inc b/lib/hipe/flow/liveness.inc
index a1caa3e0ad..bffaa4e3df 100644
--- a/lib/hipe/flow/liveness.inc
+++ b/lib/hipe/flow/liveness.inc
@@ -49,6 +49,10 @@
-endif.
-include("../flow/cfg.hrl").
+-include("../main/hipe.hrl").
+
+-opaque liveness() :: map().
+-export_type([liveness/0]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
@@ -72,7 +76,7 @@
%% The generic liveness analysis
%%
--spec analyze(cfg()) -> gb_trees:tree().
+-spec analyze(cfg()) -> liveness().
-ifdef(HIPE_LIVENESS_CALC_LARGEST_LIVESET).
analyze(CFG) ->
@@ -188,6 +192,7 @@ update_livein(Label, NewLiveIn, Liveness) ->
%%
%% LiveOut for a block is the union of the successors LiveIn
%%
+-spec liveout(liveness(), _) -> [_].
liveout(Liveness, L) ->
Succ = successors(L, Liveness),
@@ -210,7 +215,7 @@ successors(L, Liveness) ->
{_GK, _LiveIn, Successors} = liveness_lookup(L, Liveness),
Successors.
--spec livein(gb_trees:tree(), _) -> [_].
+-spec livein(liveness(), _) -> [_].
livein(Liveness, L) ->
{_GK, LiveIn, _Successors} = liveness_lookup(L, Liveness),
@@ -292,18 +297,15 @@ strip([{_,Y}|Xs]) ->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
+-compile({inline, [liveness_lookup/2, liveness_update/3]}).
+
liveness_init(List) ->
- liveness_init(List, gb_trees:empty()).
+ maps:from_list(List).
-liveness_init([{Lbl, Data}|Left], Acc) ->
- liveness_init(Left, gb_trees:insert(Lbl, Data, Acc));
-liveness_init([], Acc) ->
- Acc.
-
liveness_lookup(Label, Liveness) ->
- gb_trees:get(Label, Liveness).
+ maps:get(Label, Liveness).
liveness_update(Label, Val, Liveness) ->
- gb_trees:update(Label, Val, Liveness).
+ maps:update(Label, Val, Liveness).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%