https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85381
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |openacc
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Tom de Vries <vries at gcc dot gnu.org> ---
I've committed this workaround:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=b957d7c71a0a8984a88f5bfccf5a4b6fd080c47d
:
...
[nvptx, openacc] Don't emit barriers for empty loops
2018-04-21 Tom de Vries <t...@codesourcery.com>
PR target/85381
* config/nvptx/nvptx.c (nvptx_process_pars): Don't emit barriers for
empty loops.
* testsuite/libgomp.oacc-c-c++-common/pr85381-2.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr85381-3.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr85381-4.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr85381-5.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr85381.c: New test.
...
Submitted here: https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01023.html .
This fixes the hang that I observed, so I'm closing this PR.
[ If nvidia comes back with a clear workaround description, I'll implement
that, but there's no point in keeping the PR open. ]
