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RE: [RFC: Patch, PR 60102] [4.9/4.10 Regression] powerpc fp-bit ices at dwf_regno
- From: "rohitarulraj at freescale dot com" <rohitarulraj at freescale dot com>
- To: Ulrich Weigand <uweigand at de dot ibm dot com>, "Maciej W. Rozycki" <macro at codesourcery dot com>
- Cc: Edmar Wienskoski <edmar at freescale dot com>, David Edelsohn <dje dot gcc at gmail dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Alan Modra <amodra at gmail dot com>, Jakub Jelinek <jakub at redhat dot com>, "rohitarulraj at freescale dot com" <rohitarulraj at freescale dot com>
- Date: Mon, 29 Sep 2014 10:24:18 +0000
- Subject: RE: [RFC: Patch, PR 60102] [4.9/4.10 Regression] powerpc fp-bit ices at dwf_regno
- Authentication-results: sourceware.org; auth=none
- References: <alpine dot DEB dot 1 dot 10 dot 1409282316450 dot 4971 at tp dot orcam dot me dot uk> from "Maciej W. Rozycki" at Sep 28, 2014 11:23:18 PM <201409290943 dot s8T9hwpn030693 at d06av02 dot portsmouth dot uk dot ibm dot com>
> From: Ulrich Weigand [mailto:uweigand@de.ibm.com]
> Maciej W. Rozycki wrote:
> > On Mon, 4 Aug 2014, Edmar wrote:
> >
> > > Committed on trunk, revision 213596
> > > Committed on 4.9 branch, revision 213597
> >
> > This change regressed GDB for e500v2 multilibs, presumably because it
> > does not understand the new DWARF register numbers and does not know
> > how to map them to hardware registers.
>
> As I understand it, the change was supposed to only affect GCC internals, all
> externally generated debug info was supposed to remain unchanged.
>
> If there are changes in debug info, something must have gone wrong.
Let me check if I can track this down.
Regards,
Rohit