alloc_fence
f = alloc_fence();
f = alloc_fence();
f = alloc_fence();
f = alloc_fence();
f = alloc_fence();
A = alloc_fence();
B = alloc_fence();
C = alloc_fence();
A = alloc_fence();
B = alloc_fence();
A = alloc_fence();
B = alloc_fence();
C = alloc_fence();
A = alloc_fence();
B = alloc_fence();
C = alloc_fence();
A = alloc_fence();
B = alloc_fence();
C = alloc_fence();
fences[i] = alloc_fence();
ipc.in = alloc_fence();
ipc.out = alloc_fence();
fence = alloc_fence();
fence = alloc_fence();