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Re: SSE arguments alignment
- From: Bernd Schmidt <bernds at redhat dot com>
- To: Richard Henderson <rth at redhat dot com>
- Cc: Jan Hubicka <jh at suse dot cz>, Ian Ollmann <iano at cco dot caltech dot edu>,<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>
- Date: Sun, 13 Oct 2002 01:11:35 +0100 (BST)
- 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?
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