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Re: Incorrect bitfield aliasing with Tree SSA

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: Adam Nemet <anemet at caviumnetworks dot com>
Cc: gcc at gcc dot gnu dot org, "Daniel Berlin" <dberlin at dberlin dot org>
Date: Mon, 18 Jun 2007 08:33:58 +0200
Subject: Re: Incorrect bitfield aliasing with Tree SSA
References: <18034.48960.772642.116034@localhost.localdomain> <200706170940.12456.ebotcazou@libertysurf.fr> <18037.31830.735892.570151@localhost.localdomain>

> I am trying now to prototype a new approach along the lines of
> returning true in component_uses_parent_alias_set for SFT's with
> DECL_NONADDRESSABLE_P.

Yes, the key problem is indeed SFTs, which is why we disable structure 
aliasing in the Ada compiler.

-- 
Eric Botcazou

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: Adam Nemet

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