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 :
>
> * ling.ma.prog...@gmail.com wrote:
* ling.ma.prog...@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
From: Ma Ling
Currently we use O2 as compiler option for better performance,
although it will enlarge code size, in modern CPUs larger instructon
and unified cache, sophisticated instruction prefetch weaken instruction
cache miss, meanwhile flags such as -falign-functions, -falign-jumps,
-falig
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