gcc/omp-general.h

   1 /* General types and functions that are uselful for processing of OpenMP,
   2    OpenACC and similar directivers at various stages of compilation.
   3
   4    Copyright (C) 2005-2020 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef GCC_OMP_GENERAL_H
  23 #define GCC_OMP_GENERAL_H
  24
  25 #include "gomp-constants.h"
  26
  27 /*  Flags for an OpenACC loop.  */
  28
  29 enum oacc_loop_flags {
  30   OLF_SEQ       = 1u << 0,  /* Explicitly sequential  */
  31   OLF_AUTO      = 1u << 1,      /* Compiler chooses axes.  */
  32   OLF_INDEPENDENT = 1u << 2,    /* Iterations are known independent.  */
  33   OLF_GANG_STATIC = 1u << 3,    /* Gang partitioning is static (has op). */
  34   OLF_TILE      = 1u << 4,      /* Tiled loop. */
  35
  36   /* Explicitly specified loop axes.  */
  37   OLF_DIM_BASE = 5,
  38   OLF_DIM_GANG   = 1u << (OLF_DIM_BASE + GOMP_DIM_GANG),
  39   OLF_DIM_WORKER = 1u << (OLF_DIM_BASE + GOMP_DIM_WORKER),
  40   OLF_DIM_VECTOR = 1u << (OLF_DIM_BASE + GOMP_DIM_VECTOR),
  41
  42   OLF_MAX = OLF_DIM_BASE + GOMP_DIM_MAX
  43 };
  44
  45 /* A structure holding the elements of:
  46    for (V = N1; V cond N2; V += STEP) [...] */
  47
  48 struct omp_for_data_loop
  49 {
  50   tree v, n1, n2, step;
  51   enum tree_code cond_code;
  52 };
  53
  54 /* A structure describing the main elements of a parallel loop.  */
  55
  56 struct omp_for_data
  57 {
  58   struct omp_for_data_loop loop;
  59   tree chunk_size;
  60   gomp_for *for_stmt;
  61   tree pre, iter_type;
  62   tree tiling;  /* Tiling values (if non null).  */
  63   int collapse;  /* Collapsed loops, 1 for a non-collapsed loop.  */
  64   int ordered;
  65   bool have_nowait, have_ordered, simd_schedule, have_reductemp;
  66   bool have_pointer_condtemp, have_scantemp, have_nonctrl_scantemp;
  67   int lastprivate_conditional;
  68   unsigned char sched_modifiers;
  69   enum omp_clause_schedule_kind sched_kind;
  70   struct omp_for_data_loop *loops;
  71 };
  72
  73 #define OACC_FN_ATTRIB "oacc function"
  74
  75 extern tree omp_find_clause (tree clauses, enum omp_clause_code kind);
  76 extern bool omp_is_allocatable_or_ptr (tree decl);
  77 extern tree omp_check_optional_argument (tree decl, bool for_present_check);
  78 extern bool omp_is_reference (tree decl);
  79 extern void omp_adjust_for_condition (location_t loc, enum tree_code *cond_code,
  80                                       tree *n2, tree v, tree step);
  81 extern tree omp_get_for_step_from_incr (location_t loc, tree incr);
  82 extern void omp_extract_for_data (gomp_for *for_stmt, struct omp_for_data *fd,
  83                                   struct omp_for_data_loop *loops);
  84 extern gimple *omp_build_barrier (tree lhs);
  85 extern poly_uint64 omp_max_vf (void);
  86 extern int omp_max_simt_vf (void);
  87 extern int omp_constructor_traits_to_codes (tree, enum tree_code *);
  88 extern int omp_context_selector_matches (tree);
  89 extern int omp_context_selector_set_compare (const char *, tree, tree);
  90 extern tree omp_get_context_selector (tree, const char *, const char *);
  91 extern tree omp_resolve_declare_variant (tree);
  92 extern tree oacc_launch_pack (unsigned code, tree device, unsigned op);
  93 extern tree oacc_replace_fn_attrib_attr (tree attribs, tree dims);
  94 extern void oacc_replace_fn_attrib (tree fn, tree dims);
  95 extern void oacc_set_fn_attrib (tree fn, tree clauses, vec<tree> *args);
  96 extern int oacc_verify_routine_clauses (tree, tree *, location_t,
  97                                         const char *);
  98 extern tree oacc_build_routine_dims (tree clauses);
  99 extern tree oacc_get_fn_attrib (tree fn);
 100 extern bool offloading_function_p (tree fn);
 101 extern int oacc_get_fn_dim_size (tree fn, int axis);
 102 extern int oacc_get_ifn_dim_arg (const gimple *stmt);
 103
 104 enum omp_requires {
 105   OMP_REQUIRES_ATOMIC_DEFAULT_MEM_ORDER = 0xf,
 106   OMP_REQUIRES_UNIFIED_ADDRESS = 0x10,
 107   OMP_REQUIRES_UNIFIED_SHARED_MEMORY = 0x20,
 108   OMP_REQUIRES_DYNAMIC_ALLOCATORS = 0x40,
 109   OMP_REQUIRES_REVERSE_OFFLOAD = 0x80,
 110   OMP_REQUIRES_ATOMIC_DEFAULT_MEM_ORDER_USED = 0x100,
 111   OMP_REQUIRES_TARGET_USED = 0x200
 112 };
 113
 114 extern GTY(()) enum omp_requires omp_requires_mask;
 115
 116 #endif /* GCC_OMP_GENERAL_H */