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List:       gcc-bugs
Subject:    [Bug tree-optimization/36281] vector code is not parallelized
From:       "egallager at gcc dot gnu.org" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2018-09-30 1:54:30
Message-ID: bug-36281-4-yeqvOdTMqQ () http ! gcc ! gnu ! org/bugzilla/
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36281

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |53947
           Assignee|spop at gcc dot gnu.org            |unassigned at gcc dot gnu.org

--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> (In reply to Sebastian Pop from comment #0)
> > The testcase of PR36181 should be parallelized after being vectorized.
> > 
> > /* { dg-do compile } */
> > /* { dg-options "-O3 -ftree-parallelize-loops=2" } */
> > 
> > int foo ()
> > {
> >   int i, sum = 0, data[1024];
> > 
> >   for(i = 0; i<1024; i++)
> >     sum += data[i];
> > 
> >   return sum;
> > }
> > 
> > The fix for PR36181 was to disable the parallelization of a loop when
> > one of the phi nodes had a vector type.  This testcase should also be
> > parallelized.  See also the comments from the fix for PR36181:
> > http://gcc.gnu.org/ml/gcc-patches/2008-05/msg01217.html
> 
> Are you still working on this?

Guess not.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations=
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