C Z6.2+pooncerelease+pooncerelease+fencembacquireonce
Hash=2ecaca6a7a8d4001618b0a4b8ef2eb10
Cycle=FenceMbdRWAcquireOnce WseOnceOnce PodWWOnceRelease RfeReleaseOnce PodRWOnceRelease RfeReleaseAcquire
Relax=RfeReleaseAcquire RfeReleaseOnce
Safe=FenceMbdRW WseOnceOnce PodWWOnceRelease PodRWOnceRelease
Generator=diy7 (version 7.46+3)
Prefetch=0:x=F,0:y=W,1:y=F,1:z=W,2:z=F,2:x=W
Com=Rf Rf Ws
Orig=PodWWOnceRelease RfeReleaseOnce PodRWOnceRelease RfeReleaseAcquire FenceMbdRWAcquireOnce WseOnceOnce
{}
P0(int* x,int* y) {
WRITE_ONCE(*x,2);
smp_store_release(y,1);
}
P1(int* y,int* z) {
int r0 = READ_ONCE(*y);
smp_store_release(z,1);
}
P2(int* x,int* z) {
int r0 = smp_load_acquire(z);
smp_mb();
WRITE_ONCE(*x,1);
}
Observed
x=2; 2:r0=1; 1:r0=1;
C11 equivalent:
C Z6.2+pooncerelease+pooncerelease+fencembacquireonce
Hash=2ecaca6a7a8d4001618b0a4b8ef2eb10
Cycle=FenceMbdRWAcquireOnce WseOnceOnce PodWWOnceRelease RfeReleaseOnce PodRWOnceRelease RfeReleaseAcquire
Relax=RfeReleaseAcquire RfeReleaseOnce
Safe=FenceMbdRW WseOnceOnce PodWWOnceRelease PodRWOnceRelease
Generator=diy7 (version 7.46+3)
Prefetch=0:x=F,0:y=W,1:y=F,1:z=W,2:z=F,2:x=W
Com=Rf Rf Ws
Orig=PodWWOnceRelease RfeReleaseOnce PodRWOnceRelease RfeReleaseAcquire FenceMbdRWAcquireOnce WseOnceOnce
{}
P0(atomic_int* x,atomic_int* y) {
atomic_store_explicit(x,2,memory_order_relaxed);
atomic_store_explicit(y,1,memory_order_release);
}
P1(atomic_int* y,atomic_int* z) {
int r0 = atomic_load_explicit(y,memory_order_relaxed);
atomic_store_explicit(z,1,memory_order_release);
}
P2(atomic_int* x,atomic_int* z) {
int r0 = atomic_load_explicit(z,memory_order_acquire);
atomic_thread_fence(memory_order_seq_cst);
atomic_store_explicit(x,1,memory_order_relaxed);
}
exists (x=2 /\ 1:r0=1 /\ 2:r0=1)