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Re: gcc bootstrap broken on i686-linux-gnu

Roger Sayle <> writes:

>> /cvs/gcc/libjava/ 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:> 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.

 Andreas Jaeger
  SuSE Labs

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