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Re: [PATCH] Speed up get_ref_base_and_extent

From: "Richard Guenther" <richard dot guenther at gmail dot com>
To: "Eric Botcazou" <ebotcazou at adacore dot com>
Cc: "Richard Guenther" <rguenther at suse dot de>, gcc-patches at gcc dot gnu dot org
Date: Wed, 28 Mar 2007 22:00:13 +0200
Subject: Re: [PATCH] Speed up get_ref_base_and_extent
References: <Pine.LNX.4.64.0703271625540.19680@zhemvz.fhfr.qr> <200703282147.25195.ebotcazou@adacore.com>

On 3/28/07, Eric Botcazou <ebotcazou@adacore.com> wrote:

> 2007-03-27  Richard Guenther  <rguenther@suse.de>
>
>       * tree-dfa.c (get_ref_base_and_extent): Replace bit_offset and
>       computations with it with a HOST_WIDE_INT variable.

A little problematic for Ada because offsets can be negative (see
ada/utils.c:shift_unc_components_for_thin_pointers).  Testcase attached.

OK to install?


A little bit weird, but you know ada, so - ok ;)  (negative offsets??? oh
well...)

Richard.

2007-03-28 Eric Botcazou <ebotcazou@adacore.com>
        * tree-dfa.c (get_ref_base_and_extent): Do not expect positive
        offsets for BIT_FIELD_REF and COMPONENT_REF.
2007-03-28 Eric Botcazou <ebotcazou@adacore.com>

* gnat.dg/thin_pointer.ad[sb]: New test.
--
Eric Botcazou

Follow-Ups:
- Re: [PATCH] Speed up get_ref_base_and_extent
  - From: Eric Botcazou

References:
- [PATCH] Speed up get_ref_base_and_extent
  - From: Richard Guenther
- Re: [PATCH] Speed up get_ref_base_and_extent
  - From: Eric Botcazou

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