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gcc/include/gomp-constants.h
Kwok Cheung Yeung a6d22fb21c openmp: Add support for the OpenMP 5.0 task detach clause 
2021-01-16  Kwok Cheung Yeung  <kcy@codesourcery.com>

	gcc/
	* builtin-types.def
	(BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT): Rename
	to...
	(BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR):
	...this.  Add extra argument.
	* gimplify.c (omp_default_clause): Ensure that event handle is
	firstprivate in a task region.
	(gimplify_scan_omp_clauses): Handle OMP_CLAUSE_DETACH.
	(gimplify_adjust_omp_clauses): Likewise.
	* omp-builtins.def (BUILT_IN_GOMP_TASK): Change function type to
	BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR.
	* omp-expand.c (expand_task_call): Add GOMP_TASK_FLAG_DETACH to flags
	if detach clause specified.  Add detach argument when generating
	call to	GOMP_task.
	* omp-low.c (scan_sharing_clauses): Setup data environment for detach
	clause.
	(finish_taskreg_scan): Move field for variable containing the event
	handle to the front of the struct.
	* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_DETACH.  Fix
	ordering.
	* tree-nested.c (convert_nonlocal_omp_clauses): Handle
	OMP_CLAUSE_DETACH clause.
	(convert_local_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
	* tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_DETACH.
	* tree.c (omp_clause_num_ops): Add entry for OMP_CLAUSE_DETACH.
	Fix ordering.
	(omp_clause_code_name): Add entry for OMP_CLAUSE_DETACH.  Fix
	ordering.
	(walk_tree_1): Handle OMP_CLAUSE_DETACH.

	gcc/c-family/
	* c-pragma.h (pragma_omp_clause): Add PRAGMA_OMP_CLAUSE_DETACH.
	Redefine PRAGMA_OACC_CLAUSE_DETACH.

	gcc/c/
	* c-parser.c (c_parser_omp_clause_detach): New.
	(c_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DETACH clause.
	(OMP_TASK_CLAUSE_MASK): Add mask for PRAGMA_OMP_CLAUSE_DETACH.
	* c-typeck.c (c_finish_omp_clauses): Handle PRAGMA_OMP_CLAUSE_DETACH
	clause.  Prevent use of detach with mergeable and overriding the
	data sharing mode of the event handle.

	gcc/cp/
	* parser.c (cp_parser_omp_clause_detach): New.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DETACH.
	(OMP_TASK_CLAUSE_MASK): Add mask for PRAGMA_OMP_CLAUSE_DETACH.
	* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
	* semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
	Prevent use of detach with mergeable and overriding the	data sharing
	mode of the event handle.

	gcc/fortran/
	* dump-parse-tree.c (show_omp_clauses): Handle detach clause.
	* frontend-passes.c (gfc_code_walker): Walk detach expression.
	* gfortran.h (struct gfc_omp_clauses): Add detach field.
	(gfc_c_intptr_kind): New.
	* openmp.c (gfc_free_omp_clauses): Free detach clause.
	(gfc_match_omp_detach): New.
	(enum omp_mask1): Add OMP_CLAUSE_DETACH.
	(enum omp_mask2): Remove OMP_CLAUSE_DETACH.
	(gfc_match_omp_clauses): Handle OMP_CLAUSE_DETACH for OpenMP.
	(OMP_TASK_CLAUSES): Add OMP_CLAUSE_DETACH.
	(resolve_omp_clauses): Prevent use of detach with mergeable and
	overriding the data sharing mode of the event handle.
	* trans-openmp.c (gfc_trans_omp_clauses): Handle detach clause.
	* trans-types.c (gfc_c_intptr_kind): New.
	(gfc_init_kinds): Initialize gfc_c_intptr_kind.
	* types.def
	(BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT): Rename
	to...
	(BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR):
	...this.  Add extra argument.

	gcc/testsuite/
	* c-c++-common/gomp/task-detach-1.c: New.
	* g++.dg/gomp/task-detach-1.C: New.
	* gcc.dg/gomp/task-detach-1.c: New.
	* gfortran.dg/gomp/task-detach-1.f90: New.

	include/
	* gomp-constants.h (GOMP_TASK_FLAG_DETACH): New.

	libgomp/
	* fortran.c (omp_fulfill_event_): New.
	* libgomp.h (struct gomp_task): Add detach and completion_sem fields.
	(struct gomp_team): Add task_detach_queue and task_detach_count
	fields.
	* libgomp.map (OMP_5.0.1): Add omp_fulfill_event and omp_fulfill_event_.
	* libgomp_g.h (GOMP_task): Add extra argument.
	* omp.h.in (enum omp_event_handle_t): New.
	(omp_fulfill_event): New.
	* omp_lib.f90.in (omp_event_handle_kind): New.
	(omp_fulfill_event): New.
	* omp_lib.h.in (omp_event_handle_kind): New.
	(omp_fulfill_event): Declare.
	* priority_queue.c (priority_tree_find): New.
	(priority_list_find): New.
	(priority_queue_find): New.
	* priority_queue.h (priority_queue_predicate): New.
	(priority_queue_find): New.
	* task.c (gomp_init_task): Initialize detach field.
	(task_fulfilled_p): New.
	(GOMP_task): Add detach argument.  Ignore detach argument if
	GOMP_TASK_FLAG_DETACH not set in flags.  Initialize completion_sem
	field.	Copy address of completion_sem into detach argument and
	into the start of the data record.  Wait for detach event if task
	not deferred.
	(gomp_barrier_handle_tasks): Queue tasks with unfulfilled events.
	Remove completed tasks and requeue dependent tasks.
	(omp_fulfill_event): New.
	* team.c (gomp_new_team): Initialize task_detach_queue and
	task_detach_count fields.
	(free_team): Free task_detach_queue field.
	* testsuite/libgomp.c-c++-common/task-detach-1.c: New testcase.
	* testsuite/libgomp.c-c++-common/task-detach-2.c: New testcase.
	* testsuite/libgomp.c-c++-common/task-detach-3.c: New testcase.
	* testsuite/libgomp.c-c++-common/task-detach-4.c: New testcase.
	* testsuite/libgomp.c-c++-common/task-detach-5.c: New testcase.
	* testsuite/libgomp.c-c++-common/task-detach-6.c: New testcase.
	* testsuite/libgomp.fortran/task-detach-1.f90: New testcase.
	* testsuite/libgomp.fortran/task-detach-2.f90: New testcase.
	* testsuite/libgomp.fortran/task-detach-3.f90: New testcase.
	* testsuite/libgomp.fortran/task-detach-4.f90: New testcase.
	* testsuite/libgomp.fortran/task-detach-5.f90: New testcase.
	* testsuite/libgomp.fortran/task-detach-6.f90: New testcase.
2021-01-16 12:58:13 -08:00

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/* Communication between GCC and libgomp.
Copyright (C) 2014-2021 Free Software Foundation, Inc.
Contributed by Mentor Embedded.
This file is part of the GNU Offloading and Multi Processing Library
(libgomp).
Libgomp is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef GOMP_CONSTANTS_H
#define GOMP_CONSTANTS_H 1
/* Memory mapping types. */
/* One byte. */
#define GOMP_MAP_LAST (1 << 8)
#define GOMP_MAP_FLAG_TO (1 << 0)
#define GOMP_MAP_FLAG_FROM (1 << 1)
/* Special map kinds, enumerated starting here. */
#define GOMP_MAP_FLAG_SPECIAL_0 (1 << 2)
#define GOMP_MAP_FLAG_SPECIAL_1 (1 << 3)
#define GOMP_MAP_FLAG_SPECIAL_2 (1 << 4)
#define GOMP_MAP_FLAG_SPECIAL_4 (1 << 6)
#define GOMP_MAP_FLAG_SPECIAL (GOMP_MAP_FLAG_SPECIAL_1 \
| GOMP_MAP_FLAG_SPECIAL_0)
#define GOMP_MAP_DEEP_COPY (GOMP_MAP_FLAG_SPECIAL_4 \
| GOMP_MAP_FLAG_SPECIAL_2)
/* Flag to force a specific behavior (or else, trigger a run-time error). */
#define GOMP_MAP_FLAG_FORCE (1 << 7)
enum gomp_map_kind
{
/* If not already present, allocate. */
GOMP_MAP_ALLOC = 0,
/* ..., and copy to device. */
GOMP_MAP_TO = (GOMP_MAP_ALLOC | GOMP_MAP_FLAG_TO),
/* ..., and copy from device. */
GOMP_MAP_FROM = (GOMP_MAP_ALLOC | GOMP_MAP_FLAG_FROM),
/* ..., and copy to and from device. */
GOMP_MAP_TOFROM = (GOMP_MAP_TO | GOMP_MAP_FROM),
/* The following kind is an internal only map kind, used for pointer based
array sections. OMP_CLAUSE_SIZE for these is not the pointer size,
which is implicitly POINTER_SIZE_UNITS, but the bias. */
GOMP_MAP_POINTER = (GOMP_MAP_FLAG_SPECIAL_0 | 0),
/* Also internal, behaves like GOMP_MAP_TO, but additionally any
GOMP_MAP_POINTER records consecutive after it which have addresses
falling into that range will not be ignored if GOMP_MAP_TO_PSET wasn't
mapped already.
For OpenACC attach operations (e.g. copyin of struct members),
GOMP_MAP_TO_PSET is followed by a single GOMP_MAP_ATTACH mapping
instead. */
GOMP_MAP_TO_PSET = (GOMP_MAP_FLAG_SPECIAL_0 | 1),
/* Must already be present. */
GOMP_MAP_FORCE_PRESENT = (GOMP_MAP_FLAG_SPECIAL_0 | 2),
/* Deallocate a mapping, without copying from device. */
GOMP_MAP_DELETE = (GOMP_MAP_FLAG_SPECIAL_0 | 3),
/* Is a device pointer. OMP_CLAUSE_SIZE for these is unused; is implicitly
POINTER_SIZE_UNITS. */
GOMP_MAP_FORCE_DEVICEPTR = (GOMP_MAP_FLAG_SPECIAL_1 | 0),
/* OpenACC device_resident. */
GOMP_MAP_DEVICE_RESIDENT = (GOMP_MAP_FLAG_SPECIAL_1 | 1),
/* OpenACC link. */
GOMP_MAP_LINK = (GOMP_MAP_FLAG_SPECIAL_1 | 2),
/* Use device data if present, fall back to host address otherwise. */
GOMP_MAP_IF_PRESENT = (GOMP_MAP_FLAG_SPECIAL_1 | 3),
/* Do not map, copy bits for firstprivate instead. */
GOMP_MAP_FIRSTPRIVATE = (GOMP_MAP_FLAG_SPECIAL | 0),
/* Similarly, but store the value in the pointer rather than
pointed by the pointer. */
GOMP_MAP_FIRSTPRIVATE_INT = (GOMP_MAP_FLAG_SPECIAL | 1),
/* Pointer translate host address into device address and copy that
back to host. */
GOMP_MAP_USE_DEVICE_PTR = (GOMP_MAP_FLAG_SPECIAL | 2),
/* Allocate a zero length array section. Prefer next non-zero length
mapping over previous non-zero length mapping over zero length mapping
at the address. If not already mapped, do nothing (and pointer translate
to NULL). */
GOMP_MAP_ZERO_LEN_ARRAY_SECTION = (GOMP_MAP_FLAG_SPECIAL | 3),
/* Allocate. */
GOMP_MAP_FORCE_ALLOC = (GOMP_MAP_FLAG_FORCE | GOMP_MAP_ALLOC),
/* ..., and copy to device. */
GOMP_MAP_FORCE_TO = (GOMP_MAP_FLAG_FORCE | GOMP_MAP_TO),
/* ..., and copy from device. */
GOMP_MAP_FORCE_FROM = (GOMP_MAP_FLAG_FORCE | GOMP_MAP_FROM),
/* ..., and copy to and from device. */
GOMP_MAP_FORCE_TOFROM = (GOMP_MAP_FLAG_FORCE | GOMP_MAP_TOFROM),
/* Like GOMP_MAP_USE_DEVICE_PTR above, translate a host to a device
address. If translation fails because the target is not mapped,
continue using the host address. */
GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT = (GOMP_MAP_FLAG_SPECIAL_2 | 0),
/* If not already present, allocate. And unconditionally copy to
device. */
GOMP_MAP_ALWAYS_TO = (GOMP_MAP_FLAG_SPECIAL_2 | GOMP_MAP_TO),
/* If not already present, allocate. And unconditionally copy from
device. */
GOMP_MAP_ALWAYS_FROM = (GOMP_MAP_FLAG_SPECIAL_2
| GOMP_MAP_FROM),
/* If not already present, allocate. And unconditionally copy to and from
device. */
GOMP_MAP_ALWAYS_TOFROM = (GOMP_MAP_FLAG_SPECIAL_2
| GOMP_MAP_TOFROM),
/* Map a sparse struct; the address is the base of the structure, alignment
it's required alignment, and size is the number of adjacent entries
that belong to the struct. The adjacent entries should be sorted by
increasing address, so it is easy to determine lowest needed address
(address of the first adjacent entry) and highest needed address
(address of the last adjacent entry plus its size). */
GOMP_MAP_STRUCT = (GOMP_MAP_FLAG_SPECIAL_2
| GOMP_MAP_FLAG_SPECIAL | 0),
/* On a location of a pointer/reference that is assumed to be already mapped
earlier, store the translated address of the preceeding mapping.
No refcount is bumped by this, and the store is done unconditionally. */
GOMP_MAP_ALWAYS_POINTER = (GOMP_MAP_FLAG_SPECIAL_2
| GOMP_MAP_FLAG_SPECIAL | 1),
/* Forced deallocation of zero length array section. */
GOMP_MAP_DELETE_ZERO_LEN_ARRAY_SECTION
= (GOMP_MAP_FLAG_SPECIAL_2
| GOMP_MAP_FLAG_SPECIAL | 3),
/* Decrement usage count and deallocate if zero. */
GOMP_MAP_RELEASE = (GOMP_MAP_FLAG_SPECIAL_2
| GOMP_MAP_DELETE),
/* The attach/detach mappings below use the OMP_CLAUSE_SIZE field as a
bias. This will typically be zero, except when mapping an array slice
with a non-zero base. In that case the bias will indicate the
(positive) difference between the start of the actual mapped data and
the "virtual" origin of the array.
In OpenACC, attach a pointer to a mapped struct field. */
GOMP_MAP_ATTACH = (GOMP_MAP_DEEP_COPY | 0),
/* In OpenACC, detach a pointer to a mapped struct field. */
GOMP_MAP_DETACH = (GOMP_MAP_DEEP_COPY | 1),
/* In OpenACC, detach a pointer to a mapped struct field. */
GOMP_MAP_FORCE_DETACH = (GOMP_MAP_DEEP_COPY
| GOMP_MAP_FLAG_FORCE | 1),
/* Internal to GCC, not used in libgomp. */
/* Do not map, but pointer assign a pointer instead. */
GOMP_MAP_FIRSTPRIVATE_POINTER = (GOMP_MAP_LAST | 1),
/* Do not map, but pointer assign a reference instead. */
GOMP_MAP_FIRSTPRIVATE_REFERENCE = (GOMP_MAP_LAST | 2),
/* An attach or detach operation. Rewritten to the appropriate type during
gimplification, depending on directive (i.e. "enter data" or
parallel/kernels region vs. "exit data"). */
GOMP_MAP_ATTACH_DETACH = (GOMP_MAP_LAST | 3)
};
#define GOMP_MAP_COPY_TO_P(X) \
(!((X) & GOMP_MAP_FLAG_SPECIAL) \
&& ((X) & GOMP_MAP_FLAG_TO))
#define GOMP_MAP_COPY_FROM_P(X) \
(!((X) & GOMP_MAP_FLAG_SPECIAL) \
&& ((X) & GOMP_MAP_FLAG_FROM))
#define GOMP_MAP_ALWAYS_POINTER_P(X) \
((X) == GOMP_MAP_ALWAYS_POINTER)
#define GOMP_MAP_POINTER_P(X) \
((X) == GOMP_MAP_POINTER)
#define GOMP_MAP_ALWAYS_TO_P(X) \
(((X) == GOMP_MAP_ALWAYS_TO) || ((X) == GOMP_MAP_ALWAYS_TOFROM))
#define GOMP_MAP_ALWAYS_FROM_P(X) \
(((X) == GOMP_MAP_ALWAYS_FROM) || ((X) == GOMP_MAP_ALWAYS_TOFROM))
#define GOMP_MAP_ALWAYS_P(X) \
(GOMP_MAP_ALWAYS_TO_P (X) || ((X) == GOMP_MAP_ALWAYS_FROM))
/* Asynchronous behavior. Keep in sync with
libgomp/{openacc.h,openacc.f90,openacc_lib.h}:acc_async_t. */
#define GOMP_ASYNC_NOVAL -1
#define GOMP_ASYNC_SYNC -2
/* Device codes. Keep in sync with
libgomp/{openacc.h,openacc.f90,openacc_lib.h}:acc_device_t as well as
libgomp/libgomp-plugin.h. */
#define GOMP_DEVICE_NONE 0
#define GOMP_DEVICE_DEFAULT 1
#define GOMP_DEVICE_HOST 2
/* #define GOMP_DEVICE_HOST_NONSHM 3 removed. */
#define GOMP_DEVICE_NOT_HOST 4
#define GOMP_DEVICE_NVIDIA_PTX 5
#define GOMP_DEVICE_INTEL_MIC 6
#define GOMP_DEVICE_HSA 7
#define GOMP_DEVICE_GCN 8
#define GOMP_DEVICE_ICV -1
#define GOMP_DEVICE_HOST_FALLBACK -2
/* GOMP_task/GOMP_taskloop* flags argument. */
#define GOMP_TASK_FLAG_UNTIED (1 << 0)
#define GOMP_TASK_FLAG_FINAL (1 << 1)
#define GOMP_TASK_FLAG_MERGEABLE (1 << 2)
#define GOMP_TASK_FLAG_DEPEND (1 << 3)
#define GOMP_TASK_FLAG_PRIORITY (1 << 4)
#define GOMP_TASK_FLAG_UP (1 << 8)
#define GOMP_TASK_FLAG_GRAINSIZE (1 << 9)
#define GOMP_TASK_FLAG_IF (1 << 10)
#define GOMP_TASK_FLAG_NOGROUP (1 << 11)
#define GOMP_TASK_FLAG_REDUCTION (1 << 12)
#define GOMP_TASK_FLAG_DETACH (1 << 13)
/* GOMP_target{_ext,update_ext,enter_exit_data} flags argument. */
#define GOMP_TARGET_FLAG_NOWAIT (1 << 0)
#define GOMP_TARGET_FLAG_EXIT_DATA (1 << 1)
/* Internal to libgomp. */
#define GOMP_TARGET_FLAG_UPDATE (1U << 31)
/* OpenACC construct flags. */
/* Force host fallback execution. */
#define GOACC_FLAG_HOST_FALLBACK (1 << 0)
/* For legacy reasons, in the ABI, the GOACC_FLAGs are encoded as an inverted
bitmask. */
#define GOACC_FLAGS_MARSHAL_OP BIT_NOT_EXPR
#define GOACC_FLAGS_UNMARSHAL(X) (~(X))
/* Versions of libgomp and device-specific plugins. GOMP_VERSION
should be incremented whenever an ABI-incompatible change is introduced
to the plugin interface defined in libgomp/libgomp.h. */
#define GOMP_VERSION 1
#define GOMP_VERSION_NVIDIA_PTX 1
#define GOMP_VERSION_INTEL_MIC 0
#define GOMP_VERSION_GCN 1
#define GOMP_VERSION_PACK(LIB, DEV) (((LIB) << 16) | (DEV))
#define GOMP_VERSION_LIB(PACK) (((PACK) >> 16) & 0xffff)
#define GOMP_VERSION_DEV(PACK) ((PACK) & 0xffff)
#define GOMP_DIM_GANG 0
#define GOMP_DIM_WORKER 1
#define GOMP_DIM_VECTOR 2
#define GOMP_DIM_MAX 3
#define GOMP_DIM_MASK(X) (1u << (X))
/* Varadic launch arguments. End of list is marked by a zero. */
#define GOMP_LAUNCH_DIM 1 /* Launch dimensions, op = mask */
#define GOMP_LAUNCH_ASYNC 2 /* Async, op = cst val if not MAX */
#define GOMP_LAUNCH_WAIT 3 /* Waits, op = num waits. */
#define GOMP_LAUNCH_CODE_SHIFT 28
#define GOMP_LAUNCH_DEVICE_SHIFT 16
#define GOMP_LAUNCH_OP_SHIFT 0
#define GOMP_LAUNCH_PACK(CODE,DEVICE,OP) \
(((CODE) << GOMP_LAUNCH_CODE_SHIFT) \
| ((DEVICE) << GOMP_LAUNCH_DEVICE_SHIFT) \
| ((OP) << GOMP_LAUNCH_OP_SHIFT))
#define GOMP_LAUNCH_CODE(X) (((X) >> GOMP_LAUNCH_CODE_SHIFT) & 0xf)
#define GOMP_LAUNCH_DEVICE(X) (((X) >> GOMP_LAUNCH_DEVICE_SHIFT) & 0xfff)
#define GOMP_LAUNCH_OP(X) (((X) >> GOMP_LAUNCH_OP_SHIFT) & 0xffff)
#define GOMP_LAUNCH_OP_MAX 0xffff
/* Bitmask to apply in order to find out the intended device of a target
argument. */
#define GOMP_TARGET_ARG_DEVICE_MASK ((1 << 7) - 1)
/* The target argument is significant for all devices. */
#define GOMP_TARGET_ARG_DEVICE_ALL 0
/* Flag set when the subsequent element in the device-specific argument
values. */
#define GOMP_TARGET_ARG_SUBSEQUENT_PARAM (1 << 7)
/* Bitmask to apply to a target argument to find out the value identifier. */
#define GOMP_TARGET_ARG_ID_MASK (((1 << 8) - 1) << 8)
/* Target argument index of NUM_TEAMS. */
#define GOMP_TARGET_ARG_NUM_TEAMS (1 << 8)
/* Target argument index of THREAD_LIMIT. */
#define GOMP_TARGET_ARG_THREAD_LIMIT (2 << 8)
/* If the value is directly embeded in target argument, it should be a 16-bit
at most and shifted by this many bits. */
#define GOMP_TARGET_ARG_VALUE_SHIFT 16
/* Dependence types in omp_depend_t objects. */
#define GOMP_DEPEND_IN 1
#define GOMP_DEPEND_OUT 2
#define GOMP_DEPEND_INOUT 3
#define GOMP_DEPEND_MUTEXINOUTSET 4
/* HSA specific data structures. */
/* Identifiers of device-specific target arguments. */
#define GOMP_TARGET_ARG_HSA_KERNEL_ATTRIBUTES (1 << 8)
#endif
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