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SubjectRe: Compilation problem in ndisc.c / 2.5.1-pre2 : possible gcc bug?
On 28 Nov 2001, Erik Hensema wrote:

>
> I've been looking into the compile problems of net/ipv6/ndisc.c in
> 2.5.1-pre2 and I found that the asm generated by gcc (2.95.3) is wrong:
>
> This is a small part of a diff betweem two asm files generated by gcc, note
> the missing \n's in the wrong code:
>
> -
> - addl 0(%ebp), %edx
> - adcl 4(%ebp), %edx
> - adcl 8(%ebp), %edx
> - adcl 12(%ebp), %edx
> - adcl 0(%ecx), %edx
> - adcl 4(%ecx), %edx
> - adcl 8(%ecx), %edx
> - adcl 12(%ecx), %edx
> - adcl %edi, %edx
> - adcl %eax, %edx
> - adcl $0, %edx
> -
> + addl 0(%ebp), %edxadcl 4(%ebp), %edxadcl 8(%ebp), %edxadcl 12(%ebp), %edxadcl 0(%ecx), %edxadcl 4(%ecx), %edxadcl 8(%ecx), %edxadcl 12(%ecx), %edxadcl %edi, %edxadcl %eax, %edxadcl $0, %edx


This is probably just some loop unrolling, not some as you say "wrong
code".


Cheers,
Dick Johnson

Penguin : Linux version 2.4.1 on an i686 machine (799.53 BogoMips).

I was going to compile a list of innovations that could be
attributed to Microsoft. Once I realized that Ctrl-Alt-Del
was handled in the BIOS, I found that there aren't any.


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