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Re: Incorrect bitfield aliasing with Tree SSA

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: "Daniel Berlin" <dberlin at dberlin dot org>
Cc: gcc at gcc dot gnu dot org, "Richard Kenner" <kenner at vlsi1 dot ultra dot nyu dot edu>, anemet at caviumnetworks dot com
Date: Mon, 18 Jun 2007 08:39:21 +0200
Subject: Re: Incorrect bitfield aliasing with Tree SSA
References: <18034.48960.772642.116034@localhost.localdomain> <200706171007.44239.ebotcazou@libertysurf.fr> <4aca3dc20706171231j623d4dd3x5b2d30f957390e41@mail.gmail.com>

> I'm completely unsurprised this is broken at the tree level given how
> it is implemented

Nice tautology. :-)  You have resisted implementing anything at the tree level 
to fix the problem and now you're complaining there is a problem...

Let's try and devise something plausible at the tree level.  If we eventually 
fail, we could indeed consider disabling the optimization at the RTL level.

-- 
Eric Botcazou

Follow-Ups:
- Re: Incorrect bitfield aliasing with Tree SSA
  - From: Daniel Berlin

References:
- Incorrect bitfield aliasing with Tree SSA
  - From: Adam Nemet
- Re: Incorrect bitfield aliasing with Tree SSA
  - From: Eric Botcazou
- Re: Incorrect bitfield aliasing with Tree SSA
  - From: Daniel Berlin

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