Re: [PATCH] x86: Align jump targets to 1 byte boundaries

Linus Torvalds
2015-04-13T18:31:54Z

On Mon, Apr 13, 2015 at 10:26 AM, Markus Trippelsdorf
<markus@trippelsdorf.de> wrote:
>
> I must have made a measurement mistake above, because the actual code
> size savings are roughly 5%:

Can you check against the -fno-guess-branch-probability output?

Does lto (without pgo) perhaps end up undoing a lot of the random
"branch out and back" noise?

Linus