RE: A proposal to align GCC stack

["Ye, Joey" <joey dot ye at intel dot com>]

Andrew,

My proposal is supposed not limited to i386/x86_64. Would do please
spend some time review it and see if it can really solve problem in PowerPC?
Your comments is welcome.

Thanks - Joey  

-----Original Message-----
From: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] On Behalf Of Andrew Pinski
Sent: 2007年12月19日 18:07
To: Ross Ridge
Cc: gcc@gcc.gnu.org
Subject: Re: A proposal to align GCC stack

On 12/18/07, Ross Ridge <rridge@csclub.uwaterloo.ca> wrote:
> Look at it another way.  Lets say you were compiling x86_64 code with
> -fpreferred-stack-boundary=3, an 8-byte PREFERRED alignment.

Can we stop talking about x86/x86_64 specifics issues here?  I have an
use case for the PowerPC side of the Cell BE for variables greater
than the normal stack boundary alignment of 16bytes.  They need to be
128byte aligned for DMA transfering to the SPUs.

I already proposed a patch [1] to fix this use case but I have not
seen many replies yet.


Thanks,
Andrew Pinski

[1] http://gcc.gnu.org/ml/gcc-patches/2007-05/msg01167.html