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Re: [vta,vta4.3,trunk?] introduce -fcompare-debug
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Alexandre Oliva <aoliva at redhat dot com>
- Cc: Richard Henderson <rth at redhat dot com>, gcc-patches at gcc dot gnu dot org
- Date: Sun, 20 Dec 2009 14:06:03 -0800
- Subject: Re: [vta,vta4.3,trunk?] introduce -fcompare-debug
- References: <orljxzhyyq.fsf@oliva.athome.lsd.ic.unicamp.br> <4A26BBA2.1000809@redhat.com> <orzlcpjeyg.fsf@free.oliva.athome.lsd.ic.unicamp.br> <4A26EBF6.40501@redhat.com> <ortz2wig31.fsf@free.oliva.athome.lsd.ic.unicamp.br>
On Thu, Jun 4, 2009 at 12:00 AM, Alexandre Oliva <aoliva@redhat.com> wrote:
> On Jun ?3, 2009, Richard Henderson <rth@redhat.com> wrote:
>
>> I wouldn't mention mmap if we didn't already have config tests for
>> it, for use with the garbage collector; we certainly have exec
>> via the spawn interface in libiberty.
>
> True. ?That said, the pex interface is a bit cumbersome to use, and it's
> probably not worth it to fork and exec cmp when we can easily do the
> work ourselves. ?I didn't realize we already realied on all of the mmap
> features needed for this, thanks for pointing it out.
>
> Here's a patch that merges the 3 other patches that built upon or fixed
> the initial -fcompare-debug into the one posted upthread, and that
> addresses all of your comments, except for the -fdump-final-insns
> bootstrap compare.
>
> Ok?
>
This patch caused:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42442
--
H.J.