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Re: PATCH [v3]: makes --gc-sections compatible with -r/-q

From: Alan Modra <amodra at bigpond dot net dot au>
To: Andreas Schwab <schwab at suse dot de>
Cc: Tristan Gingold <gingold at adacore dot com>, binutils at sources dot redhat dot com
Date: Thu, 24 Jan 2008 11:38:04 +1030
Subject: Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
References: <C075C281-D6DA-4BD6-AE08-4155258B5F86@adacore.com> <20080109000240.GC30641@bubble.grove.modra.org> <F4AE8B6D-EFD8-4466-911D-322F02BB9722@adacore.com> <20080110011220.GF30641@bubble.grove.modra.org> <5B000043-41E6-47DD-8CF8-4EE2B9432299@adacore.com> <jek5m0lnyv.fsf@sykes.suse.de> <E3E3184D-D624-42F1-86AD-265C3EDE6F21@adacore.com> <jed4rsljnl.fsf@sykes.suse.de> <D48C3C85-D90B-4922-A429-BE23CBC4753D@adacore.com> <je3asojxkf.fsf@sykes.suse.de>

On Wed, Jan 23, 2008 at 05:50:24PM +0100, Andreas Schwab wrote:
> The object file for ppc64 is attached.  That is the only remaining
> failure now.

ppc64 is failing because ppc64_elf_gc_mark_hook isn't smart enough to
allow unused variables to be dropped.  It needs to treat .toc like
.opd, ie. not mark .toc when a reloc references .toc, but instead
mark the section referenced by that .toc entry.

If you'd like, xfail them for ppc64 at the moment.  I don't think I'll
get around to fixing this problem in the near future.

-- 
Alan Modra
Australia Development Lab, IBM

Follow-Ups:
- Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Tristan Gingold

References:
- PATCH: makes --gc-sections compatible with -r/-q
  - From: Tristan Gingold
- Re: PATCH: makes --gc-sections compatible with -r/-q
  - From: Alan Modra
- PATCH [v2]: makes --gc-sections compatible with -r/-q
  - From: Tristan Gingold
- Re: PATCH [v2]: makes --gc-sections compatible with -r/-q
  - From: Alan Modra
- PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Tristan Gingold
- Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Andreas Schwab
- Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Tristan Gingold
- Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Andreas Schwab
- Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Tristan Gingold
- Re: PATCH [v3]: makes --gc-sections compatible with -r/-q
  - From: Andreas Schwab

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