gcc/libgomp
Jakub Jelinek e705b8533a openmp: Differentiate between order(concurrent) and order(reproducible:concurrent)
While OpenMP 5.1 implies order(concurrent) is the same thing as
order(reproducible:concurrent), this is going to change in OpenMP 5.2, where
essentially order(concurrent) means nothing is stated on whether it is
reproducible or unconstrained (and is determined by other means, e.g. for/do
with schedule static or runtime with static being selected is implicitly
reproducible, distribute with dist_schedule static is implicitly reproducible,
loop is implicitly reproducible) and when the modifier is specified explicitly,
it overrides the implicit behavior either way.
And, when order(reproducible:concurrent) is used with e.g. schedule(dynamic)
or some other schedule that is by definition not reproducible, it is
implementation's duty to ensure it is reproducible, either by remembering how
it scheduled some loop and then replaying the same schedule when seeing loops
with the same directive/schedule/number of iterations, or by overriding the
schedule to some reproducible one.

This patch doesn't implement the 5.2 wording just yet, but in the FEs
differentiates between the 3 states - no explicit modifier, explicit reproducible
or explicit unconstrainted, so that the middle-end can easily switch any time.
Instead it follows the 5.1 wording where both order(concurrent) (implicit or
explicit) or order(reproducible:concurrent) imply reproducibility.
And, it implements the easier method, when for/do should be reproducible, it
just chooses static schedule.  order(concurrent) implies no OpenMP APIs in the
loop body nor threadprivate vars, so the exact scheduling isn't (easily at least)
observable.

2021-10-01  Jakub Jelinek  <jakub@redhat.com>

gcc/
	* tree.h (OMP_CLAUSE_ORDER_REPRODUCIBLE): Define.
	* tree-pretty-print.c (dump_omp_clause) <case OMP_CLAUSE_ORDER>: Print
	reproducible: for OMP_CLAUSE_ORDER_REPRODUCIBLE.
	* omp-general.c (omp_extract_for_data): If OMP_CLAUSE_ORDER is seen
	without OMP_CLAUSE_ORDER_UNCONSTRAINED, overwrite sched_kind to
	OMP_CLAUSE_SCHEDULE_STATIC.
gcc/c-family/
	* c-omp.c (c_omp_split_clauses): Also copy
	OMP_CLAUSE_ORDER_REPRODUCIBLE.
gcc/c/
	* c-parser.c (c_parser_omp_clause_order): Set
	OMP_CLAUSE_ORDER_REPRODUCIBLE for explicit reproducible: modifier.
gcc/cp/
	* parser.c (cp_parser_omp_clause_order): Set
	OMP_CLAUSE_ORDER_REPRODUCIBLE for explicit reproducible: modifier.
gcc/fortran/
	* gfortran.h (gfc_omp_clauses): Add order_reproducible bitfield.
	* dump-parse-tree.c (show_omp_clauses): Print REPRODUCIBLE: for it.
	* openmp.c (gfc_match_omp_clauses): Set order_reproducible for
	explicit reproducible: modifier.
	* trans-openmp.c (gfc_trans_omp_clauses): Set
	OMP_CLAUSE_ORDER_REPRODUCIBLE for order_reproducible.
	(gfc_split_omp_clauses): Also copy order_reproducible.
gcc/testsuite/
	* gfortran.dg/gomp/order-5.f90: Adjust scan-tree-dump-times regexps.
libgomp/
	* testsuite/libgomp.c-c++-common/order-reproducible-1.c: New test.
	* testsuite/libgomp.c-c++-common/order-reproducible-2.c: New test.
2021-10-01 10:45:48 +02:00
..
config Make the OpenMP 'error' directive work for nvptx offloading 2021-08-22 11:08:26 +02:00
plugin amdgcn: Enable OpenACC worker partitioning for AMD GCN 2021-08-09 15:08:44 +02:00
testsuite openmp: Differentiate between order(concurrent) and order(reproducible:concurrent) 2021-10-01 10:45:48 +02:00
.gitattributes libgomp: Fixes + cleanup for OpenACC's Fortran module + openacc_lib.h 2020-02-19 09:13:44 +01:00
acc_prof.h Update copyright years. 2021-01-04 10:26:59 +01:00
acinclude.m4 re PR other/79543 (Inappropriate "ld --version" checking) 2019-09-03 14:10:26 +00:00
aclocal.m4 libgomp: Regenerate configure files with automake 1.15.1 2020-10-02 12:08:47 +02:00
affinity-fmt.c openmp: Avoid PLT relocations for omp_* symbols in libgomp 2021-10-01 10:42:07 +02:00
affinity.c Update copyright years. 2021-01-04 10:26:59 +01:00
alloc.c Update copyright years. 2021-01-04 10:26:59 +01:00
allocator.c openmp: Add omp_aligned_{,c}alloc and omp_{c,re}alloc 2021-09-30 09:30:18 +02:00
atomic.c Update copyright years. 2021-01-04 10:26:59 +01:00
barrier.c Update copyright years. 2021-01-04 10:26:59 +01:00
ChangeLog Daily bump. 2021-10-01 00:16:27 +00:00
ChangeLog.graphite
config.h.in offload-defaulted: Config option to silently ignore uninstalled offload compilers 2021-04-28 18:46:47 +02:00
configure libgomp: Only check for 2*sizeof(void*) int type with Fortran [PR96661] 2021-09-28 15:15:47 +02:00
configure.ac libgomp: Only check for 2*sizeof(void*) int type with Fortran [PR96661] 2021-09-28 15:15:47 +02:00
configure.tgt [gcn] Work-around libgomp 'error: array subscript 0 is outside array bounds of ‘__lds struct gomp_thread * __lds[0]’ [-Werror=array-bounds]' some more [PR101484] 2021-07-20 09:14:28 +02:00
critical.c Update copyright years. 2021-01-04 10:26:59 +01:00
env.c openmp: Avoid PLT relocations for omp_* symbols in libgomp 2021-10-01 10:42:07 +02:00
error.c openmp: Implement the error directive 2021-08-20 11:36:52 +02:00
fortran.c openmp: Avoid PLT relocations for omp_* symbols in libgomp 2021-10-01 10:42:07 +02:00
hashtab.h libgomp: Structure element mapping for OpenMP 5.0 2021-06-17 21:34:59 +08:00
icv-device.c openmp: Avoid PLT relocations for omp_* symbols in libgomp 2021-10-01 10:42:07 +02:00
icv.c openmp: Avoid PLT relocations for omp_* symbols in libgomp 2021-10-01 10:42:07 +02:00
iter.c Update copyright years. 2021-01-04 10:26:59 +01:00
iter_ull.c Update copyright years. 2021-01-04 10:26:59 +01:00
libgomp-plugin.c Update copyright years. 2021-01-04 10:26:59 +01:00
libgomp-plugin.h openmp: Implement omp_get_device_num routine 2021-08-05 23:29:03 +08:00
libgomp.h Fix OpenACC "ephemeral" asynchronous host-to-device copies 2021-07-27 11:16:27 +02:00
libgomp.map openmp: Add omp_aligned_{,c}alloc and omp_{c,re}alloc 2021-09-30 09:30:18 +02:00
libgomp.spec.in
libgomp.texi openmp: Add omp_aligned_{,c}alloc and omp_{c,re}alloc for Fortran 2021-09-30 14:26:46 +02:00
libgomp_f.h.in Update copyright years. 2021-01-04 10:26:59 +01:00
libgomp_g.h openmp: Implement the error directive 2021-08-20 11:36:52 +02:00
lock.c Update copyright years. 2021-01-04 10:26:59 +01:00
loop.c Update copyright years. 2021-01-04 10:26:59 +01:00
loop_ull.c Update copyright years. 2021-01-04 10:26:59 +01:00
Makefile.am openmp: Implement OpenMP 5.1 scope construct 2021-08-17 09:30:09 +02:00
Makefile.in openmp: Implement OpenMP 5.1 scope construct 2021-08-17 09:30:09 +02:00
oacc-async.c Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-cuda.c Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-host.c Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-init.c Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-int.h Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-mem.c Fix OpenACC "ephemeral" asynchronous host-to-device copies 2021-07-27 11:16:27 +02:00
oacc-parallel.c libgomp: Structure element mapping for OpenMP 5.0 2021-06-17 21:34:59 +08:00
oacc-plugin.c Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-plugin.h Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-profiling.c Update copyright years. 2021-01-04 10:26:59 +01:00
oacc-target.c GCN libgomp port 2019-11-13 12:38:04 +00:00
omp.h.in openmp: Add alloc_align attribute to omp_aligned_*alloc and testcase for omp_realloc 2021-10-01 10:32:10 +02:00
omp_lib.f90.in openmp: Add omp_aligned_{,c}alloc and omp_{c,re}alloc for Fortran 2021-09-30 14:26:46 +02:00
omp_lib.h.in openmp: Add omp_aligned_{,c}alloc and omp_{c,re}alloc for Fortran 2021-09-30 14:26:46 +02:00
openacc.f90 Update copyright years. 2021-01-04 10:26:59 +01:00
openacc.h Update copyright years. 2021-01-04 10:26:59 +01:00
openacc_lib.h Update copyright years. 2021-01-04 10:26:59 +01:00
ordered.c Update copyright years. 2021-01-04 10:26:59 +01:00
parallel.c Update copyright years. 2021-01-04 10:26:59 +01:00
priority_queue.c openmp: Add support for the OpenMP 5.0 task detach clause 2021-01-16 12:58:13 -08:00
priority_queue.h openmp: Add support for the OpenMP 5.0 task detach clause 2021-01-16 12:58:13 -08:00
scope.c openmp: Implement OpenMP 5.1 scope construct 2021-08-17 09:30:09 +02:00
sections.c Update copyright years. 2021-01-04 10:26:59 +01:00
secure_getenv.h Update copyright years. 2021-01-04 10:26:59 +01:00
single.c Update copyright years. 2021-01-04 10:26:59 +01:00
splay-tree.c Update copyright years. 2021-01-04 10:26:59 +01:00
splay-tree.h Update copyright years. 2021-01-04 10:26:59 +01:00
target.c openmp: Implement omp_get_device_num routine 2021-08-05 23:29:03 +08:00
task.c openmp: Notify team barrier of pending tasks in omp_fulfill_event 2021-05-17 13:15:08 -07:00
taskloop.c openmp: Add support for strict modifier on grainsize/num_tasks clauses 2021-08-23 10:16:24 +02:00
team.c Replace VRP threader with a hybrid forward threader. 2021-09-27 17:39:51 +02:00
teams.c Update copyright years. 2021-01-04 10:26:59 +01:00
work.c Update copyright years. 2021-01-04 10:26:59 +01:00