Re: building kernel with gcc-4.3.x

["Chris Steel" <chris.steel@xxxxxxxxxxx>]

OK, bug 36706 raised with gcc.

I don't think I'll be able to measure the performance loss caused by the
patch as I've only got qemu to play with. I'm guessing that this sort of
measurement is going to require real hardware?

2008/7/2 Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx>:
>
> Please also submit a bug report to GCC people.
>
> The problem with applying this patch is that it's going to cause gcc to
> generate more code.  What we need is a way to measure the performance
> loss caused by the additional code compared to omitting the prefetch
> instructions entirely - it may be that omitting them with GCC 4.3.x
> compilers turns out more profitable.
>

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