SSE arguments alignment

Bernd Schmidt bernds@redhat.com
Sat Oct 12 17:11:00 GMT 2002


On Fri, 11 Oct 2002, Richard Henderson wrote:

> On Fri, Oct 11, 2002 at 02:48:15PM +0200, Jan Hubicka wrote:
> > Yes, that is the bug - outgoing operands are always aligned to 32bit
> > only as ia32 ABI mandates.  I am not quite sure how this should be
> > hanled, as we need to increase the alignment of only SSE operands
> > (probably structure containing SSE operand too, but structure containing
> > other 128bit or 64bit aligned field should not get aligned).
> 
> Err, this was already handled, I thought.  Apparently not.
> Bernd, did that stuff get left on a branch somewhere?

More likely it got broken in one of the many code rearrangements since this
stuff was written.  ix86_function_arg_boundary looks like it has a bogus
test for !TARGET_64BIT at the start.
Sigh.  I'll look into it, eventually.


Bernd



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