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Re: ultrasparc3 optimisation
- From: Jason dot Beech-Brandt at ed dot ac dot uk
- To: gcc at gcc dot gnu dot org
- Date: Wed, 16 Nov 2005 16:53:08 +0000 (GMT)
- Subject: Re: ultrasparc3 optimisation
> Hi,
>
> I'm using gcc-4.0.1 on both a UltraSparc3 and UltraSparc3cu systems.
When
> I compile code on the UltraSparc3 system using -mcpu=ultrasparc3 and run
> the file command on the executable I get
>
> hello: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+
> Required, UltraSPARC1 Extensions Required, dynamically linked, not
> stripped
First, this question is more suited to gcc-help mailinglist. Second, the
switch
you want to use is -march=ultrasparc3 which changes the used
instruction-set.
-mcpu only tunes for ultrasparc3 without using instructions that are
not available
for the default cpu used.
Richard.
---------------------
Will move discussion to gcc-help.
According to the documentation there is no -march flag for Sparc, so I
don't think it is that. g++ -march=ultrasparc3 gives an error
"invalid option 'arch=ultrasparc3'. Unless I'm missing something.
Jason