On Sun, Feb 21, 2010 at 12:27:34PM -0800, H.J. Lu wrote: > On Sun, Feb 21, 2010 at 12:22 PM, Erik Trulsson <ertr1...@student.uu.se> > wrote: > >> > >> I agreed that gcc for x86 should choose a sensible default for 95% of > >> current x86 processors in use. People with those old processors can > >> use older gcc or -march=. > >> > >> Default to SSE2 is a good first step. > > > > I think you vastly underestimate the number of older x86 processors in > > use. > > > > There is nothing which stops them from using -march=i386. It just may not > be the default.
That argument cuts both ways you know. There is nothing stopping people with the latest CPUs from using -march= to get code optimised for their hardware. It just may not be the default. -- <Insert your favourite quote here.> Erik Trulsson ertr1...@student.uu.se
