Thanks Richards (Sandiford && Biener). I have a technique question: In case of support variable IVs for memory address calculation, is it right I should make output of WHILE_LEN visible in tree-ssa-loop-ivopts.cc ? Since the address calculation is not in the loop control handling function.
Thanks. juzhe.zh...@rivai.ai From: Richard Sandiford Date: 2023-04-20 17:54 To: Richard Biener CC: juzhe.zhong\@rivai.ai; gcc-patches; jeffreyalaw Subject: Re: [PATCH] VECT: Add WHILE_LEN pattern for decrement IV support for auto-vectorization Richard Biener <rguent...@suse.de> writes: > On Thu, 20 Apr 2023, Richard Sandiford wrote: > >> "juzhe.zh...@rivai.ai" <juzhe.zh...@rivai.ai> writes: >> > OK. Thanks Richard. >> > So let me conclude: >> > 1. Community agree that I should support variable IV in the middle-end. >> > 2. We can keep WHILE_LEN pattern when "not only final iteration is >> > partial". >> > And I should describe it more clearly in the doc. >> > >> > I should do these 2 things in the later update patch. >> >> Sounds good to me, but Richi is the maintainer. > > But I happily defer to you for designing VL stuff. I suppose it's > time to make you maintainer as well ... (you are global reviewer). Heh, wasn't trying to bag an extra maintainership :-) I just got a bit lost in the thread and wasn't sure whether I was contradicting something you'd said (in which case I'd defer to that). Richard
