Re: [PATCH] PRE TLC, improve fake exit edge placement

2017-08-01 Thread Richard Biener
On Tue, 1 Aug 2017, Richard Biener wrote: > > When working on PR81181 I ran into some things I wanted to clean up > several times. First a few PRE cleanups done for the fix. Second, > the fake exit edges we add for infinite loops happen to start from > loop headers rather than latches which is

[PATCH] PRE TLC, improve fake exit edge placement

2017-08-01 Thread Richard Biener
When working on PR81181 I ran into some things I wanted to clean up several times. First a few PRE cleanups done for the fix. Second, the fake exit edges we add for infinite loops happen to start from loop headers rather than latches which is somewhat confusing and making PRE dataflow order more