From: Jesper Dangaard Brouer
Date: Mon, 28 Sep 2015 12:47:14 +0200
> Noticed that the compiler (gcc version 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC))
> generated suboptimal assembler code in eth_get_headlen().
>
> This early return coding style is usually not an issue, on super scalar CPUs,
> but
Noticed that the compiler (gcc version 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC))
generated suboptimal assembler code in eth_get_headlen().
This early return coding style is usually not an issue, on super scalar CPUs,
but the compiler choose to put the return statement after this very unlikely
branch
