diff options
Diffstat (limited to 'lib/compiler/src/beam_z.erl')
| -rw-r--r-- | lib/compiler/src/beam_z.erl | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/compiler/src/beam_z.erl b/lib/compiler/src/beam_z.erl index 8381578b68..6c7f8543c2 100644 --- a/lib/compiler/src/beam_z.erl +++ b/lib/compiler/src/beam_z.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2012. All Rights Reserved. +%% Copyright Ericsson AB 2012-2016. 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. @@ -24,6 +24,8 @@ -export([module/2]). +-import(lists, [dropwhile/2]). + module({Mod,Exp,Attr,Fs0,Lc}, _Opt) -> Fs = [function(F) || F <- Fs0], {ok,{Mod,Exp,Attr,Fs,Lc}}. @@ -51,6 +53,16 @@ undo_renames([{call,A,F},return|Is]) -> [{call_only,A,F}|undo_renames(Is)]; undo_renames([{call_ext,A,F},return|Is]) -> [{call_ext_only,A,F}|undo_renames(Is)]; +undo_renames([{bif,raise,_,_,_}=I|Is0]) -> + %% A minor optimization. Done here because: + %% (1) beam_jump may move or share 'raise' instructions, and that + %% may confuse beam_validator. + %% (2) beam_trim cannot do its optimization if the 'deallocate' + %% instruction after 'raise' has been removed. + Is = dropwhile(fun({label,_}) -> false; + (_) -> true + end, Is0), + [I|undo_renames(Is)]; undo_renames([I|Is]) -> [undo_rename(I)|undo_renames(Is)]; undo_renames([]) -> []. |