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Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA

From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
To: ebotcazou at adacore dot com
Cc: dberlin at dberlin dot org, gcc-patches at gcc dot gnu dot org, iant at google dot com, rguenther at suse dot de
Date: Fri, 19 Oct 2007 18:02:36 EDT
Subject: Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA
References: <Pine.LNX.4.64.0710181535160.4202@zhemvz.fhfr.qr> <4aca3dc20710190857p7f89efcbj535b9f4bc29bbb4e@mail.gmail.com> <Pine.LNX.4.64.0710191811330.4086@zhemvz.fhfr.qr> <200710191838.52673.ebotcazou@adacore.com>

> If I'm not mistaken, we don't rely on TYPE_REF_CAN_ALIAS_ALL for the core 
> language, we only use it for corner cases or special features.  

I believe that's correct.  Indeed I think it's hard to construct test cases
that would be triggered by a breakage in that area, though I have seen some
such cases.

Follow-Ups:
- Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA
  - From: Eric Botcazou

References:
- [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA
  - From: Richard Guenther
- Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA
  - From: Daniel Berlin
- Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA
  - From: Richard Guenther
- Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA
  - From: Eric Botcazou

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