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| author | Jakub Jelinek <jakub@redhat.com> | 2021-08-23 10:16:24 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2021-08-23 10:16:24 +0200 |
| commit | 3bc75533d1f87f0617be6c1af98804f9127ec637 (patch) | |
| tree | fa6ecc3f9840f638a87d8f4f39884c31ec7e7bab /include | |
| parent | 6f1a3668f5ee5152bdcca59843802e587339eda1 (diff) | |
| download | gcc-3bc75533d1f87f0617be6c1af98804f9127ec637.tar.gz | |
openmp: Add support for strict modifier on grainsize/num_tasks clauses
With strict: modifier on these clauses, the standard is explicit about
how many iterations (and which) each generated task of taskloop directive
should contain. For num_tasks it actually matches what we were already
implementing, but for grainsize it does not (and even violates the old
rule - without strict it requires that the number of iterations (unspecified
which exactly) handled by each generated task is >= grainsize argument and
< 2 * grainsize argument, with strict: it requires that each generated
task handles exactly == grainsize argument iterations, except for the
generated task handling the last iteration which can handles <= grainsize
iterations).
The following patch implements it for C and C++.
2021-08-23 Jakub Jelinek <jakub@redhat.com>
gcc/
* tree.h (OMP_CLAUSE_GRAINSIZE_STRICT): Define.
(OMP_CLAUSE_NUM_TASKS_STRICT): Define.
* tree-pretty-print.c (dump_omp_clause) <case OMP_CLAUSE_GRAINSIZE,
case OMP_CLAUSE_NUM_TASKS>: Print strict: modifier.
* omp-expand.c (expand_task_call): Use GOMP_TASK_FLAG_STRICT in iflags
if either grainsize or num_tasks clause has the strict modifier.
gcc/c/
* c-parser.c (c_parser_omp_clause_num_tasks,
c_parser_omp_clause_grainsize): Parse the optional strict: modifier.
gcc/cp/
* parser.c (cp_parser_omp_clause_num_tasks,
cp_parser_omp_clause_grainsize): Parse the optional strict: modifier.
include/
* gomp-constants.h (GOMP_TASK_FLAG_STRICT): Define.
libgomp/
* taskloop.c (GOMP_taskloop): Handle GOMP_TASK_FLAG_STRICT.
* testsuite/libgomp.c-c++-common/taskloop-4.c (main): Fix up comment.
* testsuite/libgomp.c-c++-common/taskloop-5.c: New test.
Diffstat (limited to 'include')
| -rw-r--r-- | include/gomp-constants.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/gomp-constants.h b/include/gomp-constants.h index 6e163b02560..ebd08013430 100644 --- a/include/gomp-constants.h +++ b/include/gomp-constants.h @@ -222,6 +222,7 @@ enum gomp_map_kind #define GOMP_TASK_FLAG_NOGROUP (1 << 11) #define GOMP_TASK_FLAG_REDUCTION (1 << 12) #define GOMP_TASK_FLAG_DETACH (1 << 13) +#define GOMP_TASK_FLAG_STRICT (1 << 14) /* GOMP_target{_ext,update_ext,enter_exit_data} flags argument. */ #define GOMP_TARGET_FLAG_NOWAIT (1 << 0) |