Re: [Mesa3d-dev] Current tinderbox regression (swrastg_dri, sparc64)

[George S. <gsa...@gm...>]

On Fri, Mar 26, 2010 at 4:11 AM, Luca Barbieri <luc...@gm...> wrote:
> Are you sure that swrastg and/or any Gallium driver actually load
> correctly and work on sparc64?
>

you are right, I forgot that gallium has its own sync primitives,
scratch my reply

> This seems to indicate that they use __sync_add_and_fetch_4 assuming
> it is a GCC builtin, but GCC does not implement it as a builtin on
> sparc64 and neither libgcc nor libc have an implementation of the
> function.
>
> I don't know anything about sparc64, but according to the linux
> kernel, I vaguely guess that specifying an high enough -march= to gcc
> could solve it by enabling use of atomic instructions that are
> otherwise are not used.
>
> The root cause is likely that we set PIPE_ATOMIC_GCC_INTRINSIC even
> though not all __sync builtins are actually supported: we should
> probably fix that.
>