Altivec + 16 byte alignment

[Gabriel Paubert]

On Wed, Feb 12, 2003 at 11:26:48PM +0100, Franz Sirl wrote:
> On Wednesday 12 February 2003 22:46, Richard Henderson wrote:
> > On Wed, Feb 12, 2003 at 10:07:54PM +0100, Franz Sirl wrote:
> > > ... and the stack pointer is kept aligned (to 256 bits) by
> > > independent code as well
> >
> > Is this 256 bits ABI mandated?  I.e. will a non-gcc ppc
> > compiler maintain this alignment as well?
> 
> Yep, ABI mandated, 256 bits for SYSV, 128 bits for EABI.

I believe that they are actually half of this, at least on 32 bit
targets. Alignment constraints of 128 and 64 appear quite frequently 
in the config/rs6000 files.

	Regards,
	Gabriel