Re: [PATCH] Avoid inserting dead code in PRE, do less work

2014-09-02 Thread Richard Biener
On Mon, 1 Sep 2014, Richard Biener wrote: > > The following patch tries to work towards fixing PR62291 by moving > NEW_SETS/AVAIL_OUT adding strictly to insert_into_preds_of_block > and the value / expression we wanted to insert. If doing that for > other unrelated expressions this may cause fak

[PATCH] Avoid inserting dead code in PRE, do less work

2014-09-01 Thread Richard Biener
The following patch tries to work towards fixing PR62291 by moving NEW_SETS/AVAIL_OUT adding strictly to insert_into_preds_of_block and the value / expression we wanted to insert. If doing that for other unrelated expressions this may cause fake partial redundancies to be detected and dead code w