Re: Fedora development switch to GCC 4.1.0-RH prerelease

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On Thu, 2005-12-08 at 10:05 -0800, Jesse Barnes wrote:
> On Thursday, December 8, 2005 1:51 am, Jakub Jelinek wrote:
> > Hi!
> >
> > Some time between today and tomorrow we plan to switch Fedora
> > development primary compiler from GCC 4.0.2-RH to 4.1.0-RH prerelease.
> > We hope GCC 4.1.0 will be officially released in time for the
> > Fedora Core 5 release, but if we want to switch, we need to do it now
> > so that the compiler and packages built with it are sufficiently
> > tested.
> 
> Arjan mentioned the other day that the Fedora linker is capable of 
> loading CPU specific libraries, depending on which ISA extensions are 
> available.  Since gcc 4.1 has a much improved autovectorizer, maybe now 
> is the time to start making use of it?  It seems like codec libraries 
> are good candidates for autovectorization, maybe their spec files could 
> build SSE2, SSE3, and 3dnow variants along with the regular, non-SIMD 
> versions of the libraries?  

on x86-64 that's already there. on x86.. why ?


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