[Bug other/83497] CPU2000 172.mgrid starts failing with r254730

[pthaugen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83497

--- Comment #3 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> 
> As far as I see the miscompare is -0.8 vs. 0.18 so it doesn't look like a
> precision issue to me.  Does it only happen for power6 / bigendian?
> 

Yes, the failure is only for -mcpu=power6. I don't have a copy of CPU2000 that
runs on powerpc64le, so can't say for sure if it's a big endian issue only.

I will do some further digging on the failure.