On Mon, Jun 15, 2009 at 08:15:32PM -0400, Bill Nottingham wrote: > Richard W.M. Jones (rjones@xxxxxxxxxx) said: > > On Mon, Jun 15, 2009 at 08:01:09PM +0100, Jeremy Sanders wrote: > > > Bill Nottingham wrote: > > > > > > > - Faster and more consistent FP math by using SSE2 registers > > > > - Allows for autovectorization by GCC where necessary > > > > - More clearly delineates our support set of targets, sticking true > > > > to forwards innovation, not necessarily legacy support > > > > > > Why not leave it be and suggest people move to the less brain dead x86-64 > > > instead? Innovation and legacy support. > > > > > > The slower x86 is, the more motivation there is to move to x86-64. > > > > +1 ... > > Well, then... let's build 32-bit x86 with -O0. Or add a few sleep()s > strategically in glibc. That'll teach them. > > Seriously, if there is a huge non-SSE2 (or, heck, non-SSE - that brings > back in Athlon-XP/MP and P3) userbase, that I can understand. But saying > 'let's not try and make it better when we can do so with trivial effort - let's > leave it slow/make it slower'... that's just silly. It's fairly sensible to suppose that, at this stage, people who want ix86 support aren't sitting around waiting for a 1% increase in performance. If they were then they'd be using the latest, hotest hardware, which is all x86-64. So compiling for baseline i386 isn't such a silly idea. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/ -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
