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Re: [patch] Fix non-standard Ada bootstrap failure on IA-64

From: Eric Botcazou <ebotcazou at adacore dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Wed, 7 Mar 2012 13:28:21 +0100
Subject: Re: [patch] Fix non-standard Ada bootstrap failure on IA-64
References: <201203062308.41696.ebotcazou@adacore.com> <CAFiYyc1ADSzjSrBbz8rq1ngzv1SCXA56x1YTQ929a0fJBiLUSg@mail.gmail.com>

> Hmm, but isn't the bug that we feed debug-insn mems to memrefs_conflict_p?

We don't.  The addresses come from regular insns, but cselib is able to 
equivalence one of them with an address that is already in its hashtable 
because of a debug insn (see cselib.c:promote_debug_loc).

> Or that we have non-legitimate address expressions in them?

My understanding is that this is by design.

-- 
Eric Botcazou

References:
- [patch] Fix non-standard Ada bootstrap failure on IA-64
  - From: Eric Botcazou
- Re: [patch] Fix non-standard Ada bootstrap failure on IA-64
  - From: Richard Guenther

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