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Re: [f-cpu] Re: Navier-Stokes



On Thu, Apr 18, 2002 at 10:25:32AM +0200, Juergen Goeritz wrote:
[...]
> >However, the LSU hints are not "portable" and not accessible from
> >portable C code. Intrinsics or macros are probably necessary,
> >but it's as ugly as using MMX intrinsics in C code, so go figure...
> >But if a compiler is "smart" (?) enough, it should do the job.
> >This goes along with the same process that is used to globally
> >allocate the registers, because program-wise statistics (and even
> >profiling) are necessary to set the good flags at the right place.
> 
> Jo, jo. But there ain't no PD compilers around that could
> do the job, are there? The gcc 2stage profiling optimization
> features are not thaaat convenient to use for global...

gcc (I suppose you mean 3.0.x) doesn't optimize globally, and the
profiling feature only has an effect on branch prediction.

-- 
 Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
 "All I wanna do is have a little fun before I die"
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