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