[OE-core] [PATCH] eglibc_2.13: Add support for handling sqrt & sqrtf on powerpc

[Mark Hatle]

On 8/1/11 9:26 AM, Kumar Gala wrote:
> Some of powerpc's dont support the fsqrt[s] instructions so we need an
> implementation of the library functions for those processors.
> 
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
> ---
>  .../recipes-core/eglibc/eglibc-2.13/ppc-sqrt.patch |  538 ++++++++++++++++++++
>  meta/recipes-core/eglibc/eglibc_2.13.bb            |    3 +-
>  2 files changed, 540 insertions(+), 1 deletions(-)
>  create mode 100644 meta/recipes-core/eglibc/eglibc-2.13/ppc-sqrt.patch

I'm a bit confused by this patch.  Why is gcc even generating (or trying to) the
fsqrt instructions on cores that don't have it?  Did someone optimize gcc so
that it always requires fsqrt on PPC?  (This is horribly broken behavior BTW...)

As for the patch, I don't object.. but this just looks like the wrong solution
to me..

--Mark