gcc/memmodel.h

   1 /* Prototypes of memory model helper functions.
   2    Copyright (C) 2015-2016 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GCC_MEMMODEL_H
  21 #define GCC_MEMMODEL_H
  22
  23 /* Return the memory model from a host integer.  */
  24 static inline enum memmodel
  25 memmodel_from_int (unsigned HOST_WIDE_INT val)
  26 {
  27   return (enum memmodel) (val & MEMMODEL_MASK);
  28 }
  29
  30 /* Return the base memory model from a host integer.  */
  31 static inline enum memmodel
  32 memmodel_base (unsigned HOST_WIDE_INT val)
  33 {
  34   return (enum memmodel) (val & MEMMODEL_BASE_MASK);
  35 }
  36
  37 /* Return TRUE if the memory model is RELAXED.  */
  38 static inline bool
  39 is_mm_relaxed (enum memmodel model)
  40 {
  41   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELAXED;
  42 }
  43
  44 /* Return TRUE if the memory model is CONSUME.  */
  45 static inline bool
  46 is_mm_consume (enum memmodel model)
  47 {
  48   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_CONSUME;
  49 }
  50
  51 /* Return TRUE if the memory model is ACQUIRE.  */
  52 static inline bool
  53 is_mm_acquire (enum memmodel model)
  54 {
  55   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQUIRE;
  56 }
  57
  58 /* Return TRUE if the memory model is RELEASE.  */
  59 static inline bool
  60 is_mm_release (enum memmodel model)
  61 {
  62   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELEASE;
  63 }
  64
  65 /* Return TRUE if the memory model is ACQ_REL.  */
  66 static inline bool
  67 is_mm_acq_rel (enum memmodel model)
  68 {
  69   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQ_REL;
  70 }
  71
  72 /* Return TRUE if the memory model is SEQ_CST.  */
  73 static inline bool
  74 is_mm_seq_cst (enum memmodel model)
  75 {
  76   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_SEQ_CST;
  77 }
  78
  79 /* Return TRUE if the memory model is a SYNC variant.  */
  80 static inline bool
  81 is_mm_sync (enum memmodel model)
  82 {
  83   return (model & MEMMODEL_SYNC);
  84 }
  85
  86 #endif  /* GCC_MEMMODEL_H  */