Messages in this thread | | | Date | Sun, 27 Jan 2013 21:38:13 +0800 | Subject | Re: [PATCH V2] [x86]: Compiler Option Os is better on latest x86 | From | Ling Ma <> |
| |
Hi Ingo
Thanks for your correcting. Because thinking of most of 32bit CPU belong to low-end CPUs(smaller cache), they should more emphasize i-cache miss, I chose Os for them. I will test it and send out result ASAP.
Regards Ling
2013/1/27, Ingo Molnar <mingo@kernel.org>: > > * ling.ma.program@gmail.com <ling.ma.program@gmail.com> wrote: > >> In this version we also append CONFIG_CC_OPTIMIZE_FOR_SIZE for i386. > > Were those measurements done on i386 as well? I'd be content > with keeping the current minimal - and mostly documentary - > patch that only does this on 64-bit. I just wanted to record the > current benchmark numbers mostly. > > Also see the discussion with Linus - this is by no far an > unconditionally good option and we'll probably have to wait for > more GCC action (-Ok or so) before being able to enable size > optimizations everywhere without unacceptable trade-offs. > > Thanks, > > Ingo >
| |