blob: 04a16603660bd29716912acb18d03e894f3a73f3 [file] [log] [blame]
C SB+rfionceonce-poonceonces
(*
* Result: Sometimes
*
* This litmus test demonstrates that LKMM is not fully multicopy atomic.
*)
{}
P0(int *x, int *y)
{
int r1;
int r2;
WRITE_ONCE(*x, 1);
r1 = READ_ONCE(*x);
r2 = READ_ONCE(*y);
}
P1(int *x, int *y)
{
int r3;
int r4;
WRITE_ONCE(*y, 1);
r3 = READ_ONCE(*y);
r4 = READ_ONCE(*x);
}
locations [0:r1; 1:r3; x; y] (* Debug aid: Print things not in "exists". *)
exists (0:r2=0 /\ 1:r4=0)