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) 2005-2018 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   unsigned char sched_modifiers;
  67   enum omp_clause_schedule_kind sched_kind;
  68   struct omp_for_data_loop *loops;
  69 };
  70
  71 #define OACC_FN_ATTRIB "oacc function"
  72
  73 extern tree omp_find_clause (tree clauses, enum omp_clause_code kind);
  74 extern bool omp_is_reference (tree decl);
  75 extern void omp_adjust_for_condition (location_t loc, enum tree_code *cond_code,
  76                                       tree *n2);
  77 extern tree omp_get_for_step_from_incr (location_t loc, tree incr);
  78 extern void omp_extract_for_data (gomp_for *for_stmt, struct omp_for_data *fd,
  79                                   struct omp_for_data_loop *loops);
  80 extern gimple *omp_build_barrier (tree lhs);
  81 extern poly_uint64 omp_max_vf (void);
  82 extern int omp_max_simt_vf (void);
  83 extern tree oacc_launch_pack (unsigned code, tree device, unsigned op);
  84 extern void oacc_replace_fn_attrib (tree fn, tree dims);
  85 extern void oacc_set_fn_attrib (tree fn, tree clauses, vec<tree> *args);
  86 extern tree oacc_build_routine_dims (tree clauses);
  87 extern tree oacc_get_fn_attrib (tree fn);
  88 extern bool offloading_function_p (tree fn);
  89 extern int oacc_get_fn_dim_size (tree fn, int axis);
  90 extern int oacc_get_ifn_dim_arg (const gimple *stmt);
  91
  92 enum omp_requires {
  93   OMP_REQUIRES_ATOMIC_DEFAULT_MEM_ORDER = 0xf,
  94   OMP_REQUIRES_UNIFIED_ADDRESS = 0x10,
  95   OMP_REQUIRES_UNIFIED_SHARED_MEMORY = 0x20,
  96   OMP_REQUIRES_DYNAMIC_ALLOCATORS = 0x40,
  97   OMP_REQUIRES_REVERSE_OFFLOAD = 0x80,
  98   OMP_REQUIRES_ATOMIC_DEFAULT_MEM_ORDER_USED = 0x100,
  99   OMP_REQUIRES_TARGET_USED = 0x200
 100 };
 101
 102 extern GTY(()) enum omp_requires omp_requires_mask;
 103
 104 #endif /* GCC_OMP_GENERAL_H */