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) 2005-2017 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
  35   /* Explicitly specified loop axes.  */
  36   OLF_DIM_BASE = 4,
  37   OLF_DIM_GANG   = 1u << (OLF_DIM_BASE + GOMP_DIM_GANG),
  38   OLF_DIM_WORKER = 1u << (OLF_DIM_BASE + GOMP_DIM_WORKER),
  39   OLF_DIM_VECTOR = 1u << (OLF_DIM_BASE + GOMP_DIM_VECTOR),
  40
  41   OLF_MAX = OLF_DIM_BASE + GOMP_DIM_MAX
  42 };
  43
  44 /* A structure holding the elements of:
  45    for (V = N1; V cond N2; V += STEP) [...] */
  46
  47 struct omp_for_data_loop
  48 {
  49   tree v, n1, n2, step;
  50   enum tree_code cond_code;
  51 };
  52
  53 /* A structure describing the main elements of a parallel loop.  */
  54
  55 struct omp_for_data
  56 {
  57   struct omp_for_data_loop loop;
  58   tree chunk_size;
  59   gomp_for *for_stmt;
  60   tree pre, iter_type;
  61   int collapse;
  62   int ordered;
  63   bool have_nowait, have_ordered, simd_schedule;
  64   unsigned char sched_modifiers;
  65   enum omp_clause_schedule_kind sched_kind;
  66   struct omp_for_data_loop *loops;
  67 };
  68
  69 #define OACC_FN_ATTRIB "oacc function"
  70
  71 extern tree omp_find_clause (tree clauses, enum omp_clause_code kind);
  72 extern bool omp_is_reference (tree decl);
  73 extern void omp_adjust_for_condition (location_t loc, enum tree_code *cond_code,
  74                                       tree *n2);
  75 extern tree omp_get_for_step_from_incr (location_t loc, tree incr);
  76 extern void omp_extract_for_data (gomp_for *for_stmt, struct omp_for_data *fd,
  77                                   struct omp_for_data_loop *loops);
  78 extern gimple *omp_build_barrier (tree lhs);
  79 extern int omp_max_vf (void);
  80 extern int omp_max_simt_vf (void);
  81 extern tree oacc_launch_pack (unsigned code, tree device, unsigned op);
  82 extern void oacc_replace_fn_attrib (tree fn, tree dims);
  83 extern void oacc_set_fn_attrib (tree fn, tree clauses, bool is_kernel,
  84                                 vec<tree> *args);
  85 extern tree oacc_build_routine_dims (tree clauses);
  86 extern tree oacc_get_fn_attrib (tree fn);
  87 extern bool oacc_fn_attrib_kernels_p (tree attr);
  88 extern int oacc_get_fn_dim_size (tree fn, int axis);
  89 extern int oacc_get_ifn_dim_arg (const gimple *stmt);
  90
  91 #endif /* GCC_OMP_GENERAL_H */