d4b6d14792
This commit adds -fopenmp-allocators which enables support for 'omp allocators' and 'omp allocate' that are associated with a Fortran allocate-stmt. If such a construct is encountered, an error is shown, unless the -fopenmp-allocators flag is present. With -fopenmp -fopenmp-allocators, those constructs get turned into GOMP_alloc allocations, while -fopenmp-allocators (also without -fopenmp) ensures deallocation and reallocation (via intrinsic assignments) are properly directed to GOMP_free/omp_realloc - while normal Fortran allocations are processed by free/realloc. In order to distinguish a 'malloc'ed from a 'GOMP_alloc'ed memory, the version field of the Fortran array discriptor is (mis)used: 0 indicates the normal Fortran allocation while 1 denotes GOMP_alloc. For scalars, there is record keeping in libgomp: GOMP_add_alloc(ptr) will add the pointer address to a splay_tree while GOMP_is_alloc(ptr) will return true it was previously added but also removes it from the list. Besides Fortran FE work, BUILT_IN_GOMP_REALLOC is no part of omp-builtins.def and libgomp gains the mentioned two new function. gcc/ChangeLog: * builtin-types.def (BT_FN_PTR_PTR_SIZE_PTRMODE_PTRMODE): New. * omp-builtins.def (BUILT_IN_GOMP_REALLOC): New. * builtins.cc (builtin_fnspec): Handle it. * gimple-ssa-warn-access.cc (fndecl_alloc_p, matching_alloc_calls_p): Likewise. * gimple.cc (nonfreeing_call_p): Likewise. * predict.cc (expr_expected_value_1): Likewise. * tree-ssa-ccp.cc (evaluate_stmt): Likewise. * tree.cc (fndecl_dealloc_argno): Likewise. gcc/fortran/ChangeLog: * dump-parse-tree.cc (show_omp_node): Handle EXEC_OMP_ALLOCATE and EXEC_OMP_ALLOCATORS. * f95-lang.cc (ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LIST): Add 'ECF_LEAF | ECF_MALLOC' to existing 'ECF_NOTHROW'. (ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LEAF_LIST): Define. * gfortran.h (gfc_omp_clauses): Add contained_in_target_construct. * invoke.texi (-fopenacc, -fopenmp): Update based on C version. (-fopenmp-simd): New, based on C version. (-fopenmp-allocators): New. * lang.opt (fopenmp-allocators): Add. * openmp.cc (resolve_omp_clauses): For allocators/allocate directive, add target and no dynamic_allocators diagnostic and more invalid diagnostic. * parse.cc (decode_omp_directive): Set contains_teams_construct. * trans-array.h (gfc_array_allocate): Update prototype. (gfc_conv_descriptor_version): New prototype. * trans-decl.cc (gfc_init_default_dt): Fix comment. * trans-array.cc (gfc_conv_descriptor_version): New. (gfc_array_allocate): Support GOMP_alloc allocation. (gfc_alloc_allocatable_for_assignment, structure_alloc_comps): Handle GOMP_free/omp_realloc as needed. * trans-expr.cc (gfc_conv_procedure_call): Likewise. (alloc_scalar_allocatable_for_assignment): Likewise. * trans-intrinsic.cc (conv_intrinsic_move_alloc): Likewise. * trans-openmp.cc (gfc_trans_omp_allocators, gfc_trans_omp_directive): Handle allocators/allocate directive. (gfc_omp_call_add_alloc, gfc_omp_call_is_alloc): New. * trans-stmt.h (gfc_trans_allocate): Update prototype. * trans-stmt.cc (gfc_trans_allocate): Support GOMP_alloc. * trans-types.cc (gfc_get_dtype_rank_type): Set version field. * trans.cc (gfc_allocate_using_malloc, gfc_allocate_allocatable): Update to handle GOMP_alloc. (gfc_deallocate_with_status, gfc_deallocate_scalar_with_status): Handle GOMP_free. (trans_code): Update call. * trans.h (gfc_allocate_allocatable, gfc_allocate_using_malloc): Update prototype. (gfc_omp_call_add_alloc, gfc_omp_call_is_alloc): New prototype. * types.def (BT_FN_PTR_PTR_SIZE_PTRMODE_PTRMODE): New. libgomp/ChangeLog: * allocator.c (struct fort_alloc_splay_tree_key_s, fort_alloc_splay_compare, GOMP_add_alloc, GOMP_is_alloc): New. * libgomp.h: Define splay_tree_static for 'reverse' splay tree. * libgomp.map (GOMP_5.1.2): New; add GOMP_add_alloc and GOMP_is_alloc; move GOMP_target_map_indirect_ptr from ... (GOMP_5.1.1): ... here. * libgomp.texi (Impl. Status, Memory management): Update for allocators/allocate directives. * splay-tree.c: Handle splay_tree_static define to declare all functions as static. (splay_tree_lookup_node): New. * splay-tree.h: Handle splay_tree_decl_only define. (splay_tree_lookup_node): New prototype. * target.c: Define splay_tree_static for 'reverse'. * testsuite/libgomp.fortran/allocators-1.f90: New test. * testsuite/libgomp.fortran/allocators-2.f90: New test. * testsuite/libgomp.fortran/allocators-3.f90: New test. * testsuite/libgomp.fortran/allocators-4.f90: New test. * testsuite/libgomp.fortran/allocators-5.f90: New test. gcc/testsuite/ChangeLog: * gfortran.dg/gomp/allocate-14.f90: Add coarray and not-listed tests. * gfortran.dg/gomp/allocate-5.f90: Remove sorry dg-message. * gfortran.dg/bind_c_array_params_2.f90: Update expected dump for dtype '.version=0'. * gfortran.dg/gomp/allocate-16.f90: New test. * gfortran.dg/gomp/allocators-3.f90: New test. * gfortran.dg/gomp/allocators-4.f90: New test. |
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