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libgomp: Document 'GOMP_teams4'

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For reference:

  - <https://inbox.sourceware.org/20211111190313.GV2710@tucnak> "[PATCH] openmp: Honor OpenMP 5.1 num_teams lower bound"
  - <https://inbox.sourceware.org/20211112132023.GC2710@tucnak> "[PATCH] libgomp, nvptx: Honor OpenMP 5.1 num_teams lower bound"

	libgomp/
	* config/gcn/target.c (GOMP_teams4): Document.
	* config/nvptx/target.c (GOMP_teams4): Likewise.
	* target.c (GOMP_teams4): Likewise.
This commit is contained in:
Thomas Schwinge
2024-07-16 17:09:38 +02:00
parent f9119948ce
commit a95c1911d8
3 changed files with 25 additions and 0 deletions
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8
libgomp/config/gcn/target.c
View File

@@ -29,6 +29,14 @@
extern volatile struct gomp_offload_icvs GOMP_ADDITIONAL_ICVS;
/* Implement OpenMP 'teams' construct.
Initialize upon FIRST call. Return whether this invocation is active.
Depending on whether NUM_TEAMS_LOWER asks for more teams than are provided
in hardware, we may need to loop multiple times; in that case make sure to
update the team-level variable used by 'omp_get_team_num', as we then can't
just use '__builtin_gcn_dim_pos (0)'. */
bool
GOMP_teams4 (unsigned int num_teams_lower, unsigned int num_teams_upper,
unsigned int thread_limit, bool first)

8
libgomp/config/nvptx/target.c
View File

@@ -31,6 +31,14 @@ extern int __gomp_team_num __attribute__((shared));
extern volatile struct gomp_offload_icvs GOMP_ADDITIONAL_ICVS;
volatile struct rev_offload *GOMP_REV_OFFLOAD_VAR;
/* Implement OpenMP 'teams' construct.
Initialize upon FIRST call. Return whether this invocation is active.
Depending on whether NUM_TEAMS_LOWER asks for more teams than are provided
in hardware, we may need to loop multiple times; in that case make sure to
update the team-level variable used by 'omp_get_team_num', as we then can't
just use '%ctaid.x'. */
bool
GOMP_teams4 (unsigned int num_teams_lower, unsigned int num_teams_upper,
unsigned int thread_limit, bool first)

9
libgomp/target.c
View File

@@ -4352,6 +4352,8 @@ gomp_target_task_fn (void *data)
return false;
}
/* Implement OpenMP 'teams' construct, legacy entry point. */
void
GOMP_teams (unsigned int num_teams, unsigned int thread_limit)
{
@@ -4364,6 +4366,13 @@ GOMP_teams (unsigned int num_teams, unsigned int thread_limit)
(void) num_teams;
}
/* Implement OpenMP 'teams' construct.
Initialize upon FIRST call. Return whether this invocation is active.
Depending on whether NUM_TEAMS_LOW asks for more teams than are provided
in hardware, we may need to loop multiple times; in that case make sure to
update the team-level variable used by 'omp_get_team_num'. */
bool
GOMP_teams4 (unsigned int num_teams_low, unsigned int num_teams_high,
unsigned int thread_limit, bool first)