Re: MVME5500 broken with gcc-4.0.2

[Kate Feng <feng1 at bnl dot gov>]

Till Straumann wrote:

> WARNING:
>
> rtems/gcc (implicitely) uses -maltivec on all 74xx CPUS and
> the MVME5500 calls for -mcpu=7450.

The 7455 CPU on the mvme5500 is a lot closer to 7450.

>
>
> Unfortunately, with -maltivec, gcc uses vector registers for
> some optimizations.
>
> --> until proper altivec support is implemented in RTEMS random
>      *data corruption* must be expected.
>
> Workaround:
>
> make/custom/mvme5500: use -mcpu=750

I can't remember what problems I had with 750.  Can
rtems/gcc-4.0.2  remove  -maltivec on all 74xx CPUS ?
I thought it's better to leave -maltive  as a BSP
option.   Which RTEMS version has implemented
altivec in 74xx CPUs ?

Thanks,
Kate

>
>
> -- Till