Re: [PATCH net-next] x86: bpf_jit: small optimization in emit_bpf_tail_call()

[David Miller]

From: Eric Dumazet <eric.duma...@gmail.com>
Date: Thu, 31 Aug 2017 04:53:42 -0700

> From: Eric Dumazet <eduma...@google.com>
> 
> 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 <eduma...@google.com>

Applied.