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-rw-r--r--lib/hipe/icode/hipe_icode_ssa.erl36
1 files changed, 17 insertions, 19 deletions
diff --git a/lib/hipe/icode/hipe_icode_ssa.erl b/lib/hipe/icode/hipe_icode_ssa.erl
index 2c4b6d9409..88317e9629 100644
--- a/lib/hipe/icode/hipe_icode_ssa.erl
+++ b/lib/hipe/icode/hipe_icode_ssa.erl
@@ -1,21 +1,16 @@
%% -*- erlang-indent-level: 2 -*-
%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2002-2014. All Rights Reserved.
-%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%%
-%% %CopyrightEnd%
+%% 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
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%%----------------------------------------------------------------------
%% File : hipe_icode_ssa.erl
@@ -33,13 +28,16 @@
-define(LIVENESS, hipe_icode_liveness).
-define(LIVENESS_NEEDED, true).
+-export_type([liveness/0]).
+
-include("hipe_icode.hrl").
-include("../ssa/hipe_ssa.inc").
%% Declarations for exported functions which are Icode-specific.
--spec ssa_liveness__analyze(#cfg{}) -> gb_trees:tree().
--spec ssa_liveness__livein(_, icode_lbl()) -> [#icode_variable{}].
-%% -spec ssa_liveness__livein(_, icode_lbl(), _) -> [#icode_var{}].
+-opaque liveness() :: liveness(icode_lbl(), #icode_variable{}).
+-spec ssa_liveness__analyze(#cfg{}) -> liveness().
+-spec ssa_liveness__livein(liveness(), icode_lbl()) -> [#icode_variable{}].
+%% -spec ssa_liveness__livein(liveness(), icode_lbl(), _) -> [#icode_var{}].
%%----------------------------------------------------------------------
%% Auxiliary operations which seriously differ between Icode and RTL.