GCC 4.0 x86: How do I specify SSE2 registers in clobber list of inline assembly?

[Wyss, Felix]

Good afternoon,

 

We have some inline assembly that uses SSE2 registers.  I wrote that code originally for GCC 3.4 and we're now moving to GCC 4.0.  I specified the SSE2 registers in the clobber list as follows:

 

    : "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5");

 

GCC 4.0 flags this with the following error: 

 

error: unknown register name '%xmm5' in 'asm'

error: unknown register name '%xmm4' in 'asm'

error: unknown register name '%xmm3' in 'asm'

error: unknown register name '%xmm2' in 'asm'

error: unknown register name '%xmm1' in 'asm'

error: unknown register name '%xmm0' in 'asm'

 

This successfully compiled with GCC 3.4.  I also tried omitting the '%' sign with no luck.  How do I specify SSE2 registers in the clobber list?

 

Thanks,

--Felix