BPF_RSH
case BPF_ALU|BPF_RSH|BPF_X:
case BPF_ALU|BPF_RSH|BPF_K:
s1 = new_stmt(BPF_ALU|BPF_RSH|BPF_K);
| arth RSH arth { $$ = gen_arth(BPF_RSH, $1, $3); }
case BPF_RSH:
case BPF_ALU|BPF_RSH|BPF_K:
op == BPF_LSH || op == BPF_RSH ||
case BPF_ALU|BPF_RSH|BPF_X:
op == BPF_LSH || op == BPF_RSH || op == BPF_SUB) {
case BPF_ALU|BPF_RSH|BPF_X:
case BPF_ALU|BPF_RSH|BPF_K:
case BPF_RSH: