[Bug middle-end/45423] New: #pragma omp atomic on bool has issues

["jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

bool b;
int i;
int
foo (void)
{
  #pragma omp atomic
    b ^= 1;
  #pragma omp barrier
  #pragma omp atomic
    b |= 1;
  #pragma omp barrier
  #pragma omp atomic
    b &= 1;
  #pragma omp barrier
  #pragma omp atomic
    b -= 1;
  #pragma omp barrier
  #pragma omp atomic
    i ^= 1;
  #pragma omp barrier
  #pragma omp atomic
    i |= 1;
  #pragma omp barrier
  #pragma omp atomic
    i &= 1;
  #pragma omp barrier
  #pragma omp atomic
    i -= 1;
  #pragma omp barrier
  #pragma omp atomic
    i &= -1;
  #pragma omp barrier
  #pragma omp atomic
    i |= -1;
  #pragma omp barrier
  return 0;
}

shows that b ^= 1 and b -= 1 isn't gimplified correctly - an expression reading
the variable before atomic_load is used in atomic_store instead of something
reading from the var in the atomic region.


-- 
           Summary: #pragma omp atomic on bool has issues
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: openmp
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45423