[Bug libgomp/56073] SPEComp2012 376.kdtree fails to complete

[amodra at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56073

--- Comment #2 from Alan Modra <amodra at gcc dot gnu.org> 2013-01-24 21:52:04 UTC ---
Author: amodra
Date: Thu Jan 24 21:51:58 2013
New Revision: 195444

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195444
Log:
    PR libgomp/51376
    PR libgomp/56073
    * task.c (GOMP_task): Revert 2011-12-09 change.
    (GOMP_taskwait): Likewise.  Instead use atomic load with acquire
    barrier to read task->children..
    (gomp_barrier_handle_tasks): ..and matching atomic store with
    release barrier here when setting parent->children to NULL.


Added:
    branches/ibm/gcc-4_7-branch/libgomp/ChangeLog.ibm
Modified:
    branches/ibm/gcc-4_7-branch/libgomp/task.c