> On Jun 8, 2018, at 6:59 AM, Andreas Schwab <sch...@linux-m68k.org> wrote:
>
> On Jun 07 2018, Paul Koning <paulkon...@comcast.net> wrote:
>
>> None of these seem to use that loop optimization, with -O2 or -Os. Did I
>> miss some magic switch to turn on something else that isn't on by default?
>> Or is this a feature that was broken long ago and not noticed? If so, any
>> hints where I might look for a reason?
>
> commit 7d3c6452d7
> Author: rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date: Thu Mar 2 23:50:55 2006 +0000
>
> * loop.c: Removed.
Interesting. The ChangeLog doesn't give any background. I suppose I should
plan to approximate the effect of this pattern with a define-peephole2 ?
paul
