About the default march and optimizations

[Fai Wong]

Hi all,

I am still rebuilding the bits using loongson2f optimization, and
gnome will appear quite soon, I will do some brief test on it, if it
is ok, I can share the building environment like:
1. root tarball with yum
2. source rpms that changed
3. building instructions
so that every should be able to do the building first.

Changing the architecture should be as simple as changing one to two
lines in redhat-rpm-config package only, will do it after sharing
information. Hope I can have a basic environment of F12 this weekend.

Cheers,
Fai

2010/3/25 Genuine LoneStar - aka xinzhen <xinz.06 at gmail.com>:
> Buddies:
>        Hi, I'm here. Didn't catch you on IRC for days.
>
>        After have a discuss with Zhang Le, I believe the right thing is
> march=mips3, with -mfix-loongson2f-nop. This way the produced code can
> run on both Loongson 2, and even any other MIPS3 compatible hardware.
>
>        march=loongson2f utilized the 3 additional instructions. As Fai said,
> this gives little performance increase, but produces incompatible code.
> Not a good idea for now, I think.
>
>        Without -mfix-loongson2f-nop, LS2F may hung. Horrible. XD
>
>
> ---
> System Analyzing:
>
> Total: 1300
> FC6:    1        (0%)
> FC10:   6        (0%)
> FC11:   1216     (93%)
> Non-FC: 74       (5%)
>
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