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To: Roger Sayle <roger@eyesopen.com>
Cc: <gcc@gcc.gnu.org>
Subject: Re: gcc bootstrap broken on i686-linux-gnu
References: <Pine.LNX.4.33.0207290913510.22645-100000@www.eyesopen.com>
From: Andreas Jaeger <aj@suse.de>
Date: Mon, 29 Jul 2002 20:45:00 -0000
In-Reply-To: <Pine.LNX.4.33.0207290913510.22645-100000@www.eyesopen.com> (Roger
 Sayle's message of "Mon, 29 Jul 2002 09:22:43 -0600 (MDT)")
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Roger Sayle <roger@eyesopen.com> writes:

>> /cvs/gcc/libjava/interpret.cc:3170: internal compiler error: RTL check:
>>    expected code `reg', have `subreg' in split_2, at insn-recog.c:61241
>> Please submit a full bug report,
>> with preprocessed source if appropriate.
>> See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>>
>> I nailed it down to this patch.  Bootstrapping with that patch
>> applied causes the ICE, without it everything seems to be fine.
>>
>> Roger, can you investigate, please?
>
> Certainly.  Sorry for any inconvenience.  The two possible
> changes in behaviour are that -1.0*x is now tranformed into
> -x by default (this previously only happened with -ffast-math),
> and that "==" and "!=" no longer trap with default options.
> One or both of these may be interacting badly with another
> part of the compiler.
>
> I'll keep you informed as I progress.  I should have a fix
> or a work-around by the end of the day.

That's fast - it gives you 6 more hours for my end of the day ;-)
(take your time to fix it properly, I can wait another day)

If you cannot reproduce it, ask me and I can try to send more details.

Thanks!
Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj