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Re: SSE arguments alignment
- From: Ian Ollmann <iano at cco dot caltech dot edu>
- To: Richard Henderson <rth at redhat dot com>
- Cc: Jan Hubicka <jh at suse dot cz>, <hubicka at gcc dot gnu dot org>, <gcc-bugs at gcc dot gnu dot org>, <gcc-prs at gcc dot gnu dot org>, <gcc-gnats at gcc dot gnu dot org>, <bernds at redhat dot com>
- Date: Fri, 11 Oct 2002 11:37:03 -0700
- Subject: Re: SSE arguments alignment
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?
Great! What about support for MOVDQA, MOVDQU, PSRLDQ and PSLLDQ? As far as
I can tell, these seem to be missing from both the GCC __builtin_ia32_*
set of intrinsics and also xmmintrin.h.
Thanks!
Ian
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Ian Ollmann, Ph.D. iano@cco.caltech.edu
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