[Bug tree-optimization/65460] New: parloops transforms offloaded functions

[Bug tree-optimization/65460] New: parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

            Bug ID: 65460
           Summary: parloops transforms offloaded functions
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org

The offload variant of PR65458 - parloops transforms omp-thread functions.

AFAIU, running the parloops pass on the host version of offloaded functions,
may as well speed up as degrade performance. 

It's probably best to disable parloops for offloaded functions, at least until
we do a targeted exercise to speed up host execution of offloaded functions.

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

--- Comment #1 from vries at gcc dot gnu.org ---
Created attachment 35052
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35052&action=edit
tentative patch

[Bug tree-optimization/65460] parloops transforms offloaded functions

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-03-18
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

--- Comment #3 from vries at gcc dot gnu.org ---
Author: vries
Date: Sat Mar 21 22:22:52 2015
New Revision: 221562

URL: https://gcc.gnu.org/viewcvs?rev=221562&root=gcc&view=rev
Log:
Mark offloaded functions as parallelized

2015-03-21  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/65460
    * omp-low.c (expand_omp_target): Set parallelized_function on
    cgraph_node for child_fn.

Modified:
    branches/gomp-4_0-branch/gcc/ChangeLog
    branches/gomp-4_0-branch/gcc/omp-low.c

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

--- Comment #4 from vries at gcc dot gnu.org ---
stage1 ping: https://gcc.gnu.org/ml/gcc-patches/2015-04/msg00861.html

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch

--- Comment #5 from vries at gcc dot gnu.org ---
patch: https://gcc.gnu.org/ml/gcc-patches/2015-03/msg01063.html

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

--- Comment #6 from vries at gcc dot gnu.org ---
stage1 ping^2: https://gcc.gnu.org/ml/gcc-patches/2015-06/msg00557.html

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

--- Comment #7 from vries at gcc dot gnu.org ---
Author: vries
Date: Tue Jun  9 21:14:46 2015
New Revision: 224303

URL: https://gcc.gnu.org/viewcvs?rev=224303&root=gcc&view=rev
Log:
Mark offloaded functions as parallelized

2015-06-09  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/65460
        * omp-low.c (expand_omp_target): Set parallelized_function on
        cgraph_node for child_fn.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/omp-low.c

[Bug tree-optimization/65460] parloops transforms offloaded functions

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65460

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #8 from vries at gcc dot gnu.org ---
patch committed to trunk, marking resolved fixed.