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
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
vector factors. For example, on x86-solaris, vectorizer does
