otp.git - Mirror of Erlang/OTP repository.

Age	Commit message (Collapse)	Author
2016-05-25	beam_receive: Don't crash when encountering nonsensical code	Björn Gustavsson

2016-03-15	update copyright-year	Henrik Nord

2015-06-18	Change license text to APLv2	Bruce Yinhe

2013-04-19	Use a set to store ref registers in beam_receive	Anthony Ramine
	In some circumstances, as when inlining code, when some optimization passes are disabled or with hand-written but semantically correct Core Erlang or BEAM assembly, a fresh reference may be live in more than one register: ... {allocate_zero,2,2}. ... {call_ext,0,{extfunc,erlang,make_ref,0}}. % Ref in [x0] ... {move,{x,0},{y,0}}. % Ref in [x0,y0] {move,{y,1},{x,0}}. % Ref in [y0] ... {move,{y,0},{x,0}}. % Ref in [x0,y0] {move,{x,0},{y,1}}. % Ref in [x0,y0,y1] {label,5}. {loop_rec,{f,6},{x,0}}. % Ref in [y0,y1] ... {loop_rec_end,{f,5}}. {label,6}. {wait,{f,5}}. ... Pass beam_receive expects a single live register for the ref when it encounters the loop_rec instruction and crashes with the following reason: $ erlc t.S ... crash reason: {{case_clause, {'EXIT', {{case_clause,[{y,1},{y,0}]}, [{beam_receive,opt_recv,5, [{file,"beam_receive.erl"},{line,154}]}, ...]}}}, ...} This commit teaches beam_receive how to use a set of registers instead of a single one when tracking fresh references, thus avoiding the crash.
2013-02-06	beam_receive: Eliminate dialyzer warning for unmatched return	Björn Gustavsson

2013-01-25	Update copyright years	Björn-Egil Dahlberg

2012-10-10	Represent the 'send' instruction as a call_ext/2 instruction	Björn Gustavsson
	Somewhat reduce code bloat.
2012-10-10	Rewrite select_val and select_tuple_arity to a select instruction	Björn Gustavsson
	Eliminate some code bloat.
2012-10-09	beam_receive: Optimize receives using refs created by spawn_monitor/{1,3}	Björn Gustavsson

2011-12-09	Update copyright years	Björn-Egil Dahlberg

2011-08-16	compiler: Generate line instructions	Björn Gustavsson

2010-05-11	Optimize selective receives in the presence of a large message queue	Björn Gustavsson
	If a gen_server process has many messages in its message queue and calls another gen_server process, the selective receive in gen_server:call() will have to go through the entire message queue. Have the compiler generate the new mark_recv/1 and mark_recv/1 instructions that can avoid going through the entire message queue.