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Diffstat (limited to 'lib/hipe/cerl/cerl_hybrid_transform.erl')
| -rw-r--r-- | lib/hipe/cerl/cerl_hybrid_transform.erl | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/lib/hipe/cerl/cerl_hybrid_transform.erl b/lib/hipe/cerl/cerl_hybrid_transform.erl deleted file mode 100644 index b248b0ccd0..0000000000 --- a/lib/hipe/cerl/cerl_hybrid_transform.erl +++ /dev/null @@ -1,153 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2004-2009. 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% -%% - --module(cerl_hybrid_transform). - -%% Use compile option `{core_transform, cerl_hybrid_transform}' to -%% insert this as a compilation pass. - --export([transform/2, core_transform/2]). - --spec core_transform(cerl:cerl(), [term()]) -> cerl:cerl(). - -core_transform(Code, Opts) -> - cerl:to_records(transform(cerl:from_records(Code), Opts)). - --spec transform(cerl:cerl(), [term()]) -> cerl:cerl(). - -transform(Code, _Opts) -> - Code0 = cerl_trees:map(fun unfold_literal/1, Code), - {Code1, _} = cerl_trees:label(Code0), - io:fwrite("Running hybrid heap analysis..."), - {T1,_} = statistics(runtime), - {Code2, _, Vars} = cerl_messagean:annotate(Code1), - {T2,_} = statistics(runtime), - io:fwrite("(~w ms), transform...", [T2 - T1]), - Code3 = rewrite(Code2, Vars), - io:fwrite("done.\n"), - cerl_trees:map(fun fold_literal/1, Code3). - -unfold_literal(T) -> - cerl:unfold_literal(T). - -fold_literal(T) -> - cerl:fold_literal(T). - -%% If escape-annotated: -%% {...} => hybrid:tuple([...]) -%% [H | T] => hybrid:cons(H, T) -%% -%% Wrapper for args to hybrid:cons/hybrid:tuple that may need copying: -%% hybrid:copy(A) - -rewrite(Node, Vars) -> - case cerl:type(Node) of - tuple -> - Es = rewrite_list(cerl:tuple_es(Node), Vars), - case is_escaping(Node) of - false -> - cerl:update_c_tuple(Node, Es); - true -> - Es1 = wrap(Es, Node, Vars), - cerl:update_c_call(Node, - cerl:abstract(hybrid), - cerl:abstract(tuple), - [cerl:make_list(Es1)]) -%%% cerl:update_c_call(Node, cerl:abstract(hybrid), -%%% cerl:abstract(tuple), Es1) - end; - cons -> - H = rewrite(cerl:cons_hd(Node), Vars), - T = rewrite(cerl:cons_tl(Node), Vars), - case is_escaping(Node) of - false -> - cerl:update_c_cons(Node, H, T); - true -> - Es = wrap([H, T], Node, Vars), - cerl:update_c_call(Node, - cerl:abstract(hybrid), - cerl:abstract(cons), - Es) - end; -%%% call -> -%%% M = rewrite(cerl:call_module(Node)), -%%% F = rewrite(cerl:call_name(Node)), -%%% As = rewrite_list(cerl:call_args(Node)), -%%% case cerl:is_c_atom(M) andalso cerl:is_c_atom(F) of -%%% true -> -%%% case {cerl:atom_val(M), cerl:atom_val(F), length(As)} of -%%% {erlang, '!', 2} -> -%%% cerl:update_c_call(Node, -%%% cerl:abstract(hipe_bifs), -%%% cerl:abstract(send), -%%% [cerl:make_list(As)]); -%%% _ -> -%%% cerl:update_c_call(Node, M, F, As) -%%% end; -%%% false -> -%%% cerl:update_c_call(Node, M, F, As) -%%% end; - clause -> - B = rewrite(cerl:clause_body(Node), Vars), - cerl:update_c_clause(Node, cerl:clause_pats(Node), - cerl:clause_guard(Node), B); - primop -> - case cerl:atom_val(cerl:primop_name(Node)) of - match_fail -> - Node; - _ -> - As = rewrite_list(cerl:primop_args(Node), Vars), - cerl:update_c_primop(Node, cerl:primop_name(Node), As) - end; - _T -> - case cerl:subtrees(Node) of - [] -> - Node; - Gs -> - cerl:update_tree(Node, [rewrite_list(Ns, Vars) - || Ns <- Gs]) - end - end. - -rewrite_list([N | Ns], Vars) -> - [rewrite(N, Vars) | rewrite_list(Ns, Vars)]; -rewrite_list([], _) -> - []. - -is_escaping(T) -> - lists:member(escapes, cerl:get_ann(T)). - -wrap(Es, Node, Vars) -> - L = cerl_trees:get_label(Node), - Xs = dict:fetch(L, Vars), - wrap(Es, Xs). - -wrap([E | Es], [{S, _} | Xs]) -> - case ordsets:is_element(unsafe, S) of -%% case cerl:type(E) =/= literal of - true -> - [cerl:c_call(cerl:abstract(hybrid), - cerl:abstract(copy), - [E]) - | wrap(Es, Xs)]; - false -> - [E | wrap(Es, Xs)] - end; -wrap([], _) -> - []. |