Test RWC+fencembacquireonce+fencembonceacquire+Once

C RWC+fencembacquireonce+fencembonceacquire+Once
Hash=ebb7d7c2a532f8a22a29abb1e08bd32c
Cycle=FreAcquireOnce RfeOnceAcquire FenceMbdRRAcquireOnce FreOnceOnce FenceMbdWROnceAcquire
Relax=FreAcquireOnce RfeOnceAcquire
Safe=FenceMbdWR FenceMbdRR FreOnceOnce
Generator=diy7 (version 7.46+3)
Prefetch=1:x=F,1:y=T,2:y=F,2:x=T
Com=Rf Fr Fr
Orig=RfeOnceAcquire FenceMbdRRAcquireOnce FreOnceOnce FenceMbdWROnceAcquire FreAcquireOnce

{}


P0(int* x) {
  WRITE_ONCE(*x,1);
}

P1(int* x,int* y) {
  int r0 = smp_load_acquire(x);
  smp_mb();
  int r1 = READ_ONCE(*y);
}

P2(int* x,int* y) {
  WRITE_ONCE(*y,1);
  smp_mb();
  int r0 = smp_load_acquire(x);
}

Observed
    2:r0=0; 1:r1=0; 1:r0=1;

C11 equivalent:

C RWC+fencembacquireonce+fencembonceacquire+Once
Hash=ebb7d7c2a532f8a22a29abb1e08bd32c
Cycle=FreAcquireOnce RfeOnceAcquire FenceMbdRRAcquireOnce FreOnceOnce FenceMbdWROnceAcquire
Relax=FreAcquireOnce RfeOnceAcquire
Safe=FenceMbdWR FenceMbdRR FreOnceOnce
Generator=diy7 (version 7.46+3)
Prefetch=1:x=F,1:y=T,2:y=F,2:x=T
Com=Rf Fr Fr
Orig=RfeOnceAcquire FenceMbdRRAcquireOnce FreOnceOnce FenceMbdWROnceAcquire FreAcquireOnce

{}


P0(atomic_int* x) {
  atomic_store_explicit(x,1,memory_order_relaxed);
}

P1(atomic_int* x,atomic_int* y) {
  int r0 = atomic_load_explicit(x,memory_order_acquire);
  atomic_thread_fence(memory_order_seq_cst);
  int r1 = atomic_load_explicit(y,memory_order_relaxed);
}

P2(atomic_int* x,atomic_int* y) {
  atomic_store_explicit(y,1,memory_order_relaxed);
  atomic_thread_fence(memory_order_seq_cst);
  int r0 = atomic_load_explicit(x,memory_order_acquire);
}

exists (1:r0=1 /\ 1:r1=0 /\ 2:r0=0)