C LB+poacquireonces Hash=e00fbfee4b5a55484d2169a9d5590105 Cycle=PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce RfeOnceAcquire Relax=RfeOnceAcquire Safe=PodRWAcquireOnce Generator=diy7 (version 7.46+3) Prefetch=0:x=F,0:y=W,1:y=F,1:x=W Com=Rf Rf Orig=PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce RfeOnceAcquire {} P0(int* x,int* y) { int r0 = smp_load_acquire(x); WRITE_ONCE(*y,1); } P1(int* x,int* y) { int r0 = smp_load_acquire(y); WRITE_ONCE(*x,1); } Observed 1:r0=1; 0:r0=1;
C11 equivalent:
C LB+poacquireonces Hash=e00fbfee4b5a55484d2169a9d5590105 Cycle=PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce RfeOnceAcquire Relax=RfeOnceAcquire Safe=PodRWAcquireOnce Generator=diy7 (version 7.46+3) Prefetch=0:x=F,0:y=W,1:y=F,1:x=W Com=Rf Rf Orig=PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce RfeOnceAcquire {} P0(atomic_int* x,atomic_int* y) { int r0 = atomic_load_explicit(x,memory_order_acquire); atomic_store_explicit(y,1,memory_order_relaxed); } P1(atomic_int* x,atomic_int* y) { int r0 = atomic_load_explicit(y,memory_order_acquire); atomic_store_explicit(x,1,memory_order_relaxed); } exists (0:r0=1 /\ 1:r0=1)