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| author | Tobias Burnus <tobias@codesourcery.com> | 2023-05-21 20:36:19 +0200 |
|---|---|---|
| committer | Tobias Burnus <tobias@codesourcery.com> | 2023-05-21 20:37:15 +0200 |
| commit | ad0f80d945cc36fbb60fd1e04d90681d4302de8b (patch) | |
| tree | 44ba23b2c1b4a17f5f27ad6d9d9e5e8ab478d61b /gcc/tree-vectorizer.h | |
| parent | dad3c18fbb481ab31f1586b8f980940fa55951b8 (diff) | |
| download | gcc-ad0f80d945cc36fbb60fd1e04d90681d4302de8b.zip gcc-ad0f80d945cc36fbb60fd1e04d90681d4302de8b.tar.gz gcc-ad0f80d945cc36fbb60fd1e04d90681d4302de8b.tar.bz2 | |
libgomp: Honor OpenMP's nteams-var ICV as upper limit on num teams [PR109875]
The nteams-var ICV exists per device and can be set either via the routine
omp_set_num_teams or as environment variable (OMP_NUM_TEAMS with optional
_ALL/_DEV/_DEV_<num> suffix); it is default-initialized to zero. The number
of teams created is described under the num_teams clause. If the clause is
absent, the number of teams is implementation defined but at least
one team must exist and, if nteams-var is positive, at most nteams-var
teams may exist.
The latter condition was not honored in a target region before this
commit, such that too many teams were created.
Already before this commit, both the num_teams([lower:]upper) clause
(on the host and in target regions) and, only on the host, the nteams-var
ICV were honored. And as only one teams is created for host fallback,
unless the clause specifies otherwise, the nteams-var ICV was and is
effectively honored.
libgomp/ChangeLog:
PR libgomp/109875
* config/gcn/target.c (GOMP_teams4): Honor nteams-var ICV.
* config/nvptx/target.c (GOMP_teams4): Likewise.
* testsuite/libgomp.c-c++-common/teams-nteams-icv-1.c: New test.
* testsuite/libgomp.c-c++-common/teams-nteams-icv-2.c: New test.
* testsuite/libgomp.c-c++-common/teams-nteams-icv-3.c: New test.
* testsuite/libgomp.c-c++-common/teams-nteams-icv-4.c: New test.
Diffstat (limited to 'gcc/tree-vectorizer.h')
0 files changed, 0 insertions, 0 deletions