Re: [PATCH net-next] x86: bpf_jit: small optimization in emit_bpf_tail_call()
- From
- Daniel Borkmann <daniel@iogearbox.net>
- Date
- 2017-08-31 12:37:33
- Reply to
- Eric Dumazet, 2017-08-31
On 08/31/2017 01:53 PM, Eric Dumazet wrote:
From: Eric Dumazet <redacted> Saves 4 bytes replacing following instructions : lea rax, [rsi + rdx * 8 + offsetof(...)] mov rax, qword ptr [rax] cmp rax, 0 by : mov rax, [rsi + rdx * 8 + offsetof(...)] test rax, rax Signed-off-by: Eric Dumazet <redacted> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net>
LGTM, thanks Eric! Acked-by: Daniel Borkmann <daniel@iogearbox.net>