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Re: m68k bootstrapping broken
Bernardo Innocenti <email@example.com> writes:
> Richard Zidlicky wrote:
>> bootstrapping with "languages=c" just completed. The argpointer
>> elimination problem still remains - crosscompiler does it correctly,
>> bootstrapped compiler doesnt.
> I've seen this too, but it doesn't always seem to be
> related with argptr elimination.
> Look at this change between stage2/mkdeps.o and
> 00000000 <munge>:
> 0: 4e56 0000 linkw %fp,#0
> 4: 48e7 3020 moveml %d2-%d3/%a2,%sp@-
> - 8: 242e 0008 movel %fp@(8),%d2
> - c: 2442 moveal %d2,%a2
> + 8: 246e 0008 moveal %fp@(8),%a2
> + c: 240a movel %a2,%d2
> e: 91c8 subal %a0,%a0
> 10: 1012 moveb %a2@,%d0
> 12: 6718 beqs 2c <munge+0x2c>
> Both versions are fine, but I wonder why a different
> instruction pattern has been generated.
I see such spurious differences from time to time on ia64 as well. It
looks like a generic problem.
Andreas Schwab, SuSE Labs, firstname.lastname@example.org
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
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