gcc -mspe -misel
Thu Jan 26 14:04:00 GMT 2006
Kai Ruottu kirjoitti:
> Most probably your compiler was not targeted to the right variant of
> PowerPC CPU... There are the 'generic', 'spe' and 'altivec' variants
> for PPC.
> For instance the target name should be 'powerpc-eabispe' or
> 'powerpc-eabisimaltivec' instead of the generic 'powerpc-eabi', if
> wanting to produce
> any code for the 'SPE' or 'e500' variant or for one of the Altivec
> types, or just wanting this code generation being the default. Older
> GCCs before
> gcc-4.0 could require the target name being different for getting any
> code for the 'e500' type CPUs...
My guess was confirmed by the following clause from a year ago, seen on
the 'gcc' maillist :
"As another secondary issue, I consider it a bug in the PowerPC back
end that command-line options (like -misel) are silently ignored in the
written by Mark Mitchell, CodeSourcery, LLC, one of the GCC developers...
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