Hello Matt, Am Sonntag, 14. September 2014, 21:12:57 schrieb Matt Turner: > On Fri, Sep 12, 2014 at 1:02 AM, Marc Dietrich <marvi...@gmx.de> wrote: > > Am Donnerstag, 11. September 2014, 08:52:39 schrieb Matt Turner: > >> On Thu, Sep 11, 2014 at 6:58 AM, Marc Dietrich <marvi...@gmx.de> wrote: > >> > File specific optimization as used for > >> > src/mesa/main/streaming-load-memcpy.c currently will cause problems with > >> > LTO in the future > >> > (see: https://bugs.freedesktop.org/show_bug.cgi?id=83669). Replace it > >> > with > >> > in-file target specification. > >> > >> This is only available in gcc-4.8 and later. > > > > no, it's there since 4.4 (4.8 has some runtime auto selection for c++ > > AFAIK). > > See https://gcc.gnu.org/gcc-4.4/changes.html (C family). > > Oh, interesting. This sounds like a good plan then. Looks to me like > gcc-4.3 is the only version that supports -msse4* and doesn't support > this attribute, and I think everyone would be okay with requiring > >=gcc-4.4 to compile i965_dri.so. > > Perhaps we could use this with our code using SSSE3 intrinsics as well. > > I'll investigate. Thanks for bringing this up and correcting me about > gcc's support! > > > I guess we need a fallback for compilers supporting -msse4.1 (icc only?) and > > not __attribute__ (target). > > Meh. Maybe it can inspire other compiler authors to maintain > compatibility with gcc. But I'm predicting dissent..
are you planing to commit this patch? Marc
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