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This patch partially enables use of the OpenMP interop construct by adding middle end support, mostly in the omplower pass, and in the target-independent part of the libgomp runtime. It follows up on previous patches for C, C++ and Fortran front ends support. The full interop feature requires another patch to enable foreign runtime support in libgomp plugins. gcc/ChangeLog: * builtin-types.def (BT_FN_VOID_INT_INT_PTR_PTR_PTR_INT_PTR_INT_PTR_UINT_PTR): New. * gimple-low.cc (lower_stmt): Handle GIMPLE_OMP_INTEROP. * gimple-pretty-print.cc (dump_gimple_omp_interop): New function. (pp_gimple_stmt_1): Handle GIMPLE_OMP_INTEROP. * gimple.cc (gimple_build_omp_interop): New function. (gimple_copy): Handle GIMPLE_OMP_INTEROP. * gimple.def (GIMPLE_OMP_INTEROP): Define. * gimple.h (gimple_build_omp_interop): Declare. (gimple_omp_interop_clauses): New function. (gimple_omp_interop_clauses_ptr): Likewise. (gimple_omp_interop_set_clauses): Likewise. (gimple_return_set_retval): Handle GIMPLE_OMP_INTEROP. * gimplify.cc (gimplify_scan_omp_clauses): Handle OMP_CLAUSE_INIT, OMP_CLAUSE_USE and OMP_CLAUSE_DESTROY. (gimplify_omp_interop): New function. (gimplify_expr): Replace sorry with call to gimplify_omp_interop. * omp-builtins.def (BUILT_IN_GOMP_INTEROP): Define. * omp-low.cc (scan_sharing_clauses): Handle OMP_CLAUSE_INIT, OMP_CLAUSE_USE and OMP_CLAUSE_DESTROY. (scan_omp_1_stmt): Handle GIMPLE_OMP_INTEROP. (lower_omp_interop_action_clauses): New function. (lower_omp_interop): Likewise. (lower_omp_1): Handle GIMPLE_OMP_INTEROP. gcc/c/ChangeLog: * c-parser.cc (c_parser_omp_clause_destroy): Make addressable. (c_parser_omp_clause_init): Make addressable. gcc/cp/ChangeLog: * parser.cc (cp_parser_omp_clause_init): Make addressable. gcc/fortran/ChangeLog: * trans-openmp.cc (gfc_trans_omp_clauses): Make OMP_CLAUSE_DESTROY and OMP_CLAUSE_INIT addressable. * types.def (BT_FN_VOID_INT_INT_PTR_PTR_PTR_INT_PTR_INT_PTR_UINT_PTR): New. include/ChangeLog: * gomp-constants.h (GOMP_DEVICE_DEFAULT_OMP_61, GOMP_INTEROP_TARGET, GOMP_INTEROP_TARGETSYNC, GOMP_INTEROP_FLAG_NOWAIT): Define. libgomp/ChangeLog: * icv-device.c (omp_set_default_device): Check GOMP_DEVICE_DEFAULT_OMP_61. * libgomp-plugin.h (struct interop_obj_t): New. (enum gomp_interop_flag): New. (GOMP_OFFLOAD_interop): Declare. (GOMP_OFFLOAD_get_interop_int): Declare. (GOMP_OFFLOAD_get_interop_ptr): Declare. (GOMP_OFFLOAD_get_interop_str): Declare. (GOMP_OFFLOAD_get_interop_type_desc): Declare. * libgomp.h (_LIBGOMP_OMP_LOCK_DEFINED): Define. (struct gomp_device_descr): Add interop_func, get_interop_int_func, get_interop_ptr_func, get_interop_str_func, get_interop_type_desc_func. * libgomp.map: Add GOMP_interop. * libgomp_g.h (GOMP_interop): Declare. * target.c (resolve_device): Handle GOMP_DEVICE_DEFAULT_OMP_61. (omp_get_interop_int): Replace stub with actual implementation. (omp_get_interop_ptr): Likewise. (omp_get_interop_str): Likewise. (omp_get_interop_type_desc): Likewise. (struct interop_data_t): Define. (gomp_interop_internal): New function. (GOMP_interop): Likewise. (gomp_load_plugin_for_device): Load symbols for get_interop_int, get_interop_ptr, get_interop_str and get_interop_type_desc. * testsuite/libgomp.c-c++-common/interop-1.c: New test. gcc/testsuite/ChangeLog: * c-c++-common/gomp/interop-1.c: Remove dg-prune-output "sorry". * c-c++-common/gomp/interop-2.c: Likewise. * c-c++-common/gomp/interop-3.c: Likewise. * c-c++-common/gomp/interop-4.c: Remove dg-message "not supported". * g++.dg/gomp/interop-5.C: Likewise. * gfortran.dg/gomp/interop-4.f90: Likewise. * c-c++-common/gomp/interop-5.c: New test. * gfortran.dg/gomp/interop-5.f90: New test. Co-authored-by: Tobias Burnus <tburnus@baylibre.com>
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