a0, 0(s1) (b) fence w, w (e) sw t1,0(s2) (f) lw a2,4(s1) xor a3,a2,a2 add s0,s0,a3 (f) sw t1, 0(s0) (b) fence.tso // vs. fence rw,w atomic_thread_fence(memory_order_acq_rel) fence.tso atomic_thread_fence(memory_order_seq_cst) fence rw,rw (e) amoswap.w.rl
electroscopes