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Re: m68k bootstrapping broken


Bernardo Innocenti <bernie@develer.com> writes:

> Andreas Schwab wrote:
>
>>>Look at this change between stage2/mkdeps.o and
>>>stage3/mkdeps.o:
>>>
>>> 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.
>
> You mean with a simple crosscompiler?

No, native.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."


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