Hi,
On Mon, 21 Nov 2016, Richard Biener wrote:
> >> Btw, this probably means that on haswell (or other archs with vf==4) mgrid
> >> is slower than necessary. On mgrid you really really want predictive
> >> commoning to happen. Vectorization isn't that interesting there.
> > Interesting, I will
On Fri, Nov 18, 2016 at 5:57 PM, Bin.Cheng wrote:
> On Fri, Nov 18, 2016 at 4:52 PM, Michael Matz wrote:
>> Hi,
>>
>> On Thu, 17 Nov 2016, Bin.Cheng wrote:
>>
>>> B) Depending on ilp, I think below test strings fail for long time with
>>> haswell:
>>> ! { dg-final { scan-tree-dump-times "Executi
On Fri, Nov 18, 2016 at 4:52 PM, Michael Matz wrote:
> Hi,
>
> On Thu, 17 Nov 2016, Bin.Cheng wrote:
>
>> B) Depending on ilp, I think below test strings fail for long time with
>> haswell:
>> ! { dg-final { scan-tree-dump-times "Executing predictive commoning
>> without unrolling" 1 "pcom" { tar
Hi,
On Thu, 17 Nov 2016, Bin.Cheng wrote:
> B) Depending on ilp, I think below test strings fail for long time with
> haswell:
> ! { dg-final { scan-tree-dump-times "Executing predictive commoning
> without unrolling" 1 "pcom" { target lp64 } } }
> ! { dg-final { scan-tree-dump-times "Executing
On Thu, Nov 17, 2016 at 10:53 AM, Richard Biener
wrote:
> On Thu, Nov 17, 2016 at 11:26 AM, Bin.Cheng wrote:
>> On Thu, Nov 17, 2016 at 8:32 AM, Richard Biener
>> wrote:
>>> On Wed, Nov 16, 2016 at 6:20 PM, Bin Cheng wrote:
Hi,
Currently test gfortran.dg/vect/fast-math-mgrid-resid.f c
On Thu, Nov 17, 2016 at 11:26 AM, Bin.Cheng wrote:
> On Thu, Nov 17, 2016 at 8:32 AM, Richard Biener
> wrote:
>> On Wed, Nov 16, 2016 at 6:20 PM, Bin Cheng wrote:
>>> Hi,
>>> Currently test gfortran.dg/vect/fast-math-mgrid-resid.f checks all
>>> predictive commoning opportunities for all possib
On Thu, Nov 17, 2016 at 8:32 AM, Richard Biener
wrote:
> On Wed, Nov 16, 2016 at 6:20 PM, Bin Cheng wrote:
>> Hi,
>> Currently test gfortran.dg/vect/fast-math-mgrid-resid.f checks all
>> predictive commoning opportunities for all possible loops. This makes it
>> fragile because vectorizer may
On Wed, Nov 16, 2016 at 6:20 PM, Bin Cheng wrote:
> Hi,
> Currently test gfortran.dg/vect/fast-math-mgrid-resid.f checks all predictive
> commoning opportunities for all possible loops. This makes it fragile
> because vectorizer may peel the loop differently, as well as may choose
> different
