LCOV - code coverage report
Current view: top level - gcc - memmodel.h (source / functions) Hit Total Coverage
Test: gcc.info Lines: 18 18 100.0 %
Date: 2020-04-04 11:58:09 Functions: 0 0 -
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /* Prototypes of memory model helper functions.
       2                 :            :    Copyright (C) 2011-2020 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                 :            : /* Suppose that higher bits are target dependent. */
      24                 :            : #define MEMMODEL_MASK ((1<<16)-1)
      25                 :            : 
      26                 :            : /* Legacy sync operations set this upper flag in the memory model.  This allows
      27                 :            :    targets that need to do something stronger for sync operations to
      28                 :            :    differentiate with their target patterns and issue a more appropriate insn
      29                 :            :    sequence.  See bugzilla 65697 for background.  */
      30                 :            : #define MEMMODEL_SYNC (1<<15)
      31                 :            : 
      32                 :            : /* Memory model without SYNC bit for targets/operations that do not care.  */
      33                 :            : #define MEMMODEL_BASE_MASK (MEMMODEL_SYNC-1)
      34                 :            : 
      35                 :            : /* Memory model types for the __atomic* builtins.
      36                 :            :    This must match the order in libstdc++-v3/include/bits/atomic_base.h.  */
      37                 :            : enum memmodel
      38                 :            : {
      39                 :            :   MEMMODEL_RELAXED = 0,
      40                 :            :   MEMMODEL_CONSUME = 1,
      41                 :            :   MEMMODEL_ACQUIRE = 2,
      42                 :            :   MEMMODEL_RELEASE = 3,
      43                 :            :   MEMMODEL_ACQ_REL = 4,
      44                 :            :   MEMMODEL_SEQ_CST = 5,
      45                 :            :   MEMMODEL_LAST = 6,
      46                 :            :   MEMMODEL_SYNC_ACQUIRE = MEMMODEL_ACQUIRE | MEMMODEL_SYNC,
      47                 :            :   MEMMODEL_SYNC_RELEASE = MEMMODEL_RELEASE | MEMMODEL_SYNC,
      48                 :            :   MEMMODEL_SYNC_SEQ_CST = MEMMODEL_SEQ_CST | MEMMODEL_SYNC,
      49                 :            :   /* Say that all the higher bits are valid target extensions.  */
      50                 :            :   MEMMODEL_MAX = INTTYPE_MAXIMUM (int)
      51                 :            : };
      52                 :            : 
      53                 :            : /* Return the memory model from a host integer.  */
      54                 :            : static inline enum memmodel
      55                 :     139046 : memmodel_from_int (unsigned HOST_WIDE_INT val)
      56                 :            : {
      57                 :     139046 :   return (enum memmodel) (val & MEMMODEL_MASK);
      58                 :            : }
      59                 :            : 
      60                 :            : /* Return the base memory model from a host integer.  */
      61                 :            : static inline enum memmodel
      62                 :     197954 : memmodel_base (unsigned HOST_WIDE_INT val)
      63                 :            : {
      64                 :     197954 :   return (enum memmodel) (val & MEMMODEL_BASE_MASK);
      65                 :            : }
      66                 :            : 
      67                 :            : /* Return TRUE if the memory model is RELAXED.  */
      68                 :            : static inline bool
      69                 :      75890 : is_mm_relaxed (enum memmodel model)
      70                 :            : {
      71                 :      75890 :   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELAXED;
      72                 :            : }
      73                 :            : 
      74                 :            : /* Return TRUE if the memory model is CONSUME.  */
      75                 :            : static inline bool
      76                 :         51 : is_mm_consume (enum memmodel model)
      77                 :            : {
      78                 :         51 :   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_CONSUME;
      79                 :            : }
      80                 :            : 
      81                 :            : /* Return TRUE if the memory model is ACQUIRE.  */
      82                 :            : static inline bool
      83                 :         73 : is_mm_acquire (enum memmodel model)
      84                 :            : {
      85                 :         73 :   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQUIRE;
      86                 :            : }
      87                 :            : 
      88                 :            : /* Return TRUE if the memory model is RELEASE.  */
      89                 :            : static inline bool
      90                 :      67878 : is_mm_release (enum memmodel model)
      91                 :            : {
      92                 :      67878 :   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELEASE;
      93                 :            : }
      94                 :            : 
      95                 :            : /* Return TRUE if the memory model is ACQ_REL.  */
      96                 :            : static inline bool
      97                 :     192979 : is_mm_acq_rel (enum memmodel model)
      98                 :            : {
      99                 :     192979 :   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQ_REL;
     100                 :            : }
     101                 :            : 
     102                 :            : /* Return TRUE if the memory model is SEQ_CST.  */
     103                 :            : static inline bool
     104                 :     207302 : is_mm_seq_cst (enum memmodel model)
     105                 :            : {
     106                 :     207302 :   return (model & MEMMODEL_BASE_MASK) == MEMMODEL_SEQ_CST;
     107                 :            : }
     108                 :            : 
     109                 :            : /* Return TRUE if the memory model is a SYNC variant.  */
     110                 :            : static inline bool
     111                 :       3213 : is_mm_sync (enum memmodel model)
     112                 :            : {
     113                 :       3213 :   return (model & MEMMODEL_SYNC);
     114                 :            : }
     115                 :            : 
     116                 :            : #endif  /* GCC_MEMMODEL_H  */

Generated by: LCOV version 1.0

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto --enable-host-shared. GCC test suite is run with the built compiler.