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Re: BIGGEST_ALIGNMENT on AIX 32-bit

From: Perry Smith <pedz at easesoftware dot net>
To: Robert Dewar <dewar at adacore dot com>
Cc: Eric Botcazou <ebotcazou at adacore dot com>, David Edelsohn <dje at watson dot ibm dot com>, gcc at gcc dot gnu dot org
Date: Sat, 14 Jan 2006 11:45:08 -0600
Subject: Re: BIGGEST_ALIGNMENT on AIX 32-bit
References: <200601141431.09669.ebotcazou@adacore.com> <200601141521.25031.ebotcazou@adacore.com> <200601141425.k0EEPED28024@makai.watson.ibm.com> <200601141603.48244.ebotcazou@adacore.com> <3684F09D-C1EB-4ED3-BF6D-4D847E18998A@easesoftware.net> <43C92478.4010806@adacore.com>

On Jan 14, 2006, at 10:19 AM, Robert Dewar wrote:

Perry Smith wrote:

The conflict is actually 32bit, AIX, Altivec, and Ada (together). So, how about for now, just say that Ada can't support Altivec on 32bit AIX.

My point is that I'd like to keep Altivec support on 32bit AIX for other languages.

I am confused, how can Altivec be properly supported if the stack does not have sufficient alignment.

Couldn't (and shouldn't) the start sequence in crt0 align the stack? It seems someone somewhere has to do that eventually anyway. I would not assume the OS is going to cooperate.

Follow-Ups:
- Re: BIGGEST_ALIGNMENT on AIX 32-bit
  - From: Eric Botcazou

References:
- BIGGEST_ALIGNMENT on AIX 32-bit
  - From: Eric Botcazou
- Re: BIGGEST_ALIGNMENT on AIX 32-bit
  - From: Eric Botcazou
- Re: BIGGEST_ALIGNMENT on AIX 32-bit
  - From: David Edelsohn
- Re: BIGGEST_ALIGNMENT on AIX 32-bit
  - From: Eric Botcazou
- Re: BIGGEST_ALIGNMENT on AIX 32-bit
  - From: Perry Smith
- Re: BIGGEST_ALIGNMENT on AIX 32-bit
  - From: Robert Dewar

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