On Wed, Mar 05, 2014 at 10:16:13AM -0500, Ryan Lortie wrote: > > 1) Use -fexcess-precision=standard and suffer the performance hit in > the name of correctness
I wouldn't be entirely against this option, if the performance hit is measurably not awful in general purpose usage. > 2) Bite the bullet and use -march=pentium4 -mfpmath=sse (which is what > happens for 64bit) This cuts out support for a lot of i686 processors we currently run on today, and I'm not sure that's something we want to do. That said, we also dropped support for non-PAE in our kernels, and the intersection of CPUs with PAE and no SSE2 is certainly a smaller set. I'd still like to see a comprehensive list (think outside of just Intel here, to other x86 kit) of which CPUs we'd be dropping support for before we even considered this. ... Adam -- ubuntu-devel mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel
