* Linus Torvalds <[email protected]> wrote:
> Your compiler generates
>
> movl -16(%ebp),%edx
> movl (%edx),%edi /* this is _totally_ bogus! */
> incl %edx
> movl %edx,-16(%ebp)
> movl %edi,%ecx
> testb %cl,%cl
> je ...
ah, ok.
> while I get (gcc version 4.1.2 20070925 (Red Hat 4.1.2-28)):
>
> movl -16(%ebp), %eax # p,
> movzbl (%eax), %edi #, c /* not bogus! */
> movl %edi, %edx # c,
> testb %dl, %dl #
> je .L64 #,
> incl %eax #
> movsbl %dl,%ebx #, D.12414
> movl %eax, -16(%ebp) #, p
>
> where the difference (apart from doing the increment differently and
> different register allocation) is that I have a "movzbl" (correct),
> while you have a "movl" (pure and utter crap).
i'll try with another compiler in a minute.
Ingo
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