[PATCH v4 2/3] Add predict_doloop_p target hook

[Segher Boessenkool]

On Mon, Jun 17, 2019 at 10:51:49AM +0200, Richard Biener wrote:
> On Mon, 17 Jun 2019, Kewen.Lin wrote:
> 
> > Hi Segher and Bill,
> > 
> > Thanks a lot for your review comments! I've updated the patch accordingly.
> > 
> > The updated one attached.
> 
> OK.  I suppose all low-overhead loop instructions use a decrement to zero
> style iterator?

The documentation says decrement to 0, decrement to -1, and decrement to
any negative are all supported.  But all are decrement, yes.


Segher