Rob Jenkins (robj++at++quid.csd.sgi.com)
Fri, 20 Feb 1998 12:56:46 -0800
man cc says:
"
-mips4
Generate code using the full MIPS IV instruction set which is
supported on R10000, R5000 and R8000 systems, and search for mips4
libraries/objects at link-time. This is the default on R8000
systems. This defaults to -n32 if -64 has not been specified
(except on R8000-based systems it defaults to -64).
"
So if you have R10K Impact then mips4 implies n32 ( unless you specify n64 ) I
think.
Cheers
Rob
On Feb 20, 11:44am, Randy Fox wrote:
> Subject: Re: Performer 2.2 on High Impact
> Can you use -mips4 on a n32 bit PF2.2 app or does it have to be a n64
> compile?
>
> Randy
>
>
> Angus Dorbie wrote:
> >
> > On Jan 29, 9:09am, vectec.epe wrote:
> > > Subject: Performer 2.2 on High Impact
> > > Hi All,
> > >
> > > we upgraded our High Impact (Irix 6.2) to Performer 2.2 and have problems
> > > to execute Perfly under n32 (compile: OK, execute: coredumps).
> >
> > Works fine on my system.
> >
> > >
> > > Hence the question: what are the advantages to work under n32 versus o32
on
> > > a High Impact (R4400/250MHz) ?
> >
> > You get better instruction set support (use -mips3 flag also) and better
> > compiler optimizations (register count etc), you should really move to n32.
> >
> > Use -mips4 for R10k.
> >
> > Cheers,Angus.
> >
> > --
> > "The ultimate measure of a man is not where he stands
> > in moments of comfort and convenience, but where he
> > stands at times of challenge and controversy."
> > -Martin Luther King, Jr.
> > =======================================================================
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>-- End of excerpt from Randy Fox
--
________________________________________________________________
Rob Jenkins mailto:robj++at++sgi.com
Silicon Graphics, Mtn View, California, USA
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