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C ISA2+poonceonces
(*
* Result: Sometimes
*
* Given a release-acquire chain ordering the first process's store
* against the last process's load, is ordering preserved if all of the
* smp_store_release() invocations are replaced by WRITE_ONCE() and all
* of the smp_load_acquire() invocations are replaced by READ_ONCE()?
*)
{}
P0(int *x, int *y)
{
WRITE_ONCE(*x, 1);
WRITE_ONCE(*y, 1);
}
P1(int *y, int *z)
{
int r0;
r0 = READ_ONCE(*y);
WRITE_ONCE(*z, 1);
}
P2(int *x, int *z)
{
int r0;
int r1;
r0 = READ_ONCE(*z);
r1 = READ_ONCE(*x);
}
exists (1:r0=1 /\ 2:r0=1 /\ 2:r1=0)
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