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From: Tobias Burnus <burnus@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-3377] libgomp.texi: Add OpenMP Implementation Status Date: Tue, 7 Sep 2021 09:02:02 +0000 (GMT) [thread overview] Message-ID: <20210907090202.C97323858415@sourceware.org> (raw) https://gcc.gnu.org/g:cff72ef4e2ff8d5775470a8a01a6d9760d2c70be commit r12-3377-gcff72ef4e2ff8d5775470a8a01a6d9760d2c70be Author: Tobias Burnus <tobias@codesourcery.com> Date: Tue Sep 7 11:01:38 2021 +0200 libgomp.texi: Add OpenMP Implementation Status libgomp/ * libgomp.texi (Enabling OpenMP): Refer to OMP spec in general not to 4.5; link to new section. (OpenMP Implementation Status): New. Diff: --- libgomp/libgomp.texi | 111 +++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 108 insertions(+), 3 deletions(-) diff --git a/libgomp/libgomp.texi b/libgomp/libgomp.texi index 1bfa26ea497..0ae9c3260ff 100644 --- a/libgomp/libgomp.texi +++ b/libgomp/libgomp.texi @@ -95,6 +95,7 @@ changed to GNU Offloading and Multi Processing Runtime Library. @comment @menu * Enabling OpenMP:: How to enable OpenMP for your applications. +* OpenMP Implementation Status:: List of implemented features by OpenMP version * OpenMP Runtime Library Routines: Runtime Library Routines. The OpenMP runtime application programming interface. @@ -141,9 +142,113 @@ flag @command{-fopenmp} must be specified. This enables the OpenMP directive arranges for automatic linking of the OpenMP runtime library (@ref{Runtime Library Routines}). -A complete description of all OpenMP directives accepted may be found in -the @uref{https://www.openmp.org, OpenMP Application Program Interface} manual, -version 4.5. +A complete description of all OpenMP directives may be found in the +@uref{https://www.openmp.org, OpenMP Application Program Interface} manuals. +See also @ref{OpenMP Implementation Status}. + + +@c --------------------------------------------------------------------- +@c OpenMP Implementation Status +@c --------------------------------------------------------------------- + +@node OpenMP Implementation Status +@chapter OpenMP Implementation Status + +@menu +* OpenMP 4.5:: Feature completion status to 4.5 specification +* OpenMP 5.0:: Feature completion status to 5.0 specification +* OpenMP 5.1:: Feature completion status to 5.1 specification +@end menu + +The @code{_OPENMP} preprocessor macro and Fortran's @code{openmp_version} +parameter, provided by @code{omp_lib.h} and the @code{omp_lib} module, have +the value @code{201511} (i.e. OpenMP 4.5). + +@node OpenMP 4.5 +@section OpenMP 4.5 + +The OpenMP 4.5 specification is fully supported. + +@node OpenMP 5.0 +@section OpenMP 5.0 + +Partial support of the OpenMP 5.0 specification. The OMPT and the OMPD +interfaces are unsupported. + +@node OpenMP 5.1 +@section OpenMP 5.1 + +@unnumberedsubsec New features listed in Appendix B of the OpenMP specification + +@multitable @columnfractions .60 .10 .25 +@headitem Description @tab Status @tab Comments +@item OpenMP directive as C++ attribute specifiers @tab Y @tab +@item @code{omp_all_memory} reserved locator @tab N @tab +@item @emph{target_device trait} in OpenMP Context @tab N @tab +@item @code{target_device} selector set in context selectors @tab N @tab +@item C/C++'s @code{declare variante} directive: elision support of + preprocessed code @tab N @tab +@item @code{declare variante}: new clauses @code{adjust_args} and + @code{append_args} @tab N @tab +@item @code{dispatch} construct @tab N @tab +@item device-specific ICV settings the environment variables @tab N @tab +@item assume directive @tab N @tab +@item @code{nothing} directive @tab Y @tab +@item @code{error} directive @tab Y @tab +@item @code{masked} construct @tab Y @tab +@item @code{scope} directive @tab Y @tab +@item Loop transformation constructs @tab N @tab +@item @code{strict} modifier in the @code{grainsize} and @code{num_tasks} + clauses of the taskloop construct @tab Y @tab +@item @code{align} clause/modifier in @code{allocate} directive/clause + and @code{allocator} directive @tab N @tab +@item @code{thread_limit} clause to @code{target} construct @tab N @tab +@item @code{has_device_addr} clause to @code{target} construct @tab N @tab +@item iterators in @code{target update} motion clauses and @code{map} + clauses @tab N @tab +@item indirect calls to the device version of a procedure or function in + @code{target} regions @tab N @tab +@item @code{interop} directive @tab N @tab +@item @code{omp_interop_t} object support in runtime routines @tab N @tab +@item @code{nowait} clause in @code{taskwait} directive @tab N @tab +@item Extensions to the @code{atomic} directive @tab N @tab +@item @code{seq_cst} clause on a @code{flush} construct @tab Y @tab +@item @code{inoutset} argument to the @code{depend} clause @tab N @tab +@item @code{private} and @code{firstprivate} argument to @code{default} + clause in C and C++ @tab N @tab +@item @code{present} argument to @code{defaultmap} clause @tab N @tab +@item @code{omp_set_num_teams}, @code{omp_set_teams_thread_limit}, + @code{omp_get_max_teams}, @code{omp_get_teams_thread_limit} runtime + routines @tab N @tab +@item @code{omp_target_is_accessible} runtime routine @tab N @tab +@item @code{omp_target_memcpy_async} and @code{omp_target_memcpy_rect_async} + runtime routines @tab N @tab +@item @code{omp_get_mapped_ptr} runtime routine @tab N @tab +@item @code{omp_calloc}, @code{omp_realloc}, @code{omp_aligned_alloc} and + @code{omp_aligned_calloc} runtime routines @tab N @tab +@item @code{omp_alloctrait_key_t} enum: @code{omp_atv_serialized} added, + @code{omp_atv_default} changed @tab Y @tab +@item @code{omp_display_env} runtime routine @tab P + @tab Not inside @code{target} regions +@item @code{ompt_scope_endpoint_t} enum: @code{ompt_scope_beginend} @tab N @tab +@item @code{ompt_sync_region_t} enum additions @tab N @tab +@item @code{ompt_state_t} enum: @code{ompt_state_wait_barrier_implementation} + and @code{ompt_state_wait_barrier_teams} @tab N @tab +@item @code{ompt_callback_target_data_op_emi_t}, + @code{ompt_callback_target_emi_t}, @code{ompt_callback_target_map_emi_t} + and @code{ompt_callback_target_submit_emi_t} @tab N @tab +@item @code{ompt_callback_error_t} type @tab N @tab +@item @code{OMP_PLACES} syntax was extension @tab N @tab +@item @code{OMP_NUM_TEAMS} and @code{OMP_TEAMS_THREAD_LIMIT} environment + variables @tab N @tab +@end multitable + +@unnumberedsubsec Other new OpenMP 5.1 features + +@multitable @columnfractions .60 .10 .25 +@headitem Description @tab Status @tab Comments +@item Suppport of strictly structured blocks in Fortran @tab N @tab +@end multitable @c ---------------------------------------------------------------------
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