On Friday 07 December 2007, Balbir Singh wrote:
> Balbir Singh wrote:
> > Geert Uytterhoeven wrote:
> >> On Sat, 8 Dec 2007, Balbir Singh wrote:
> >>> + if (strstr(p, "fake="))
> >>> + cmdline = p + 5; /* 5 is faster than strlen("fake=") */
> >> Really? My gcc is smart enough to replace the `strlen("fake=")' by 5, even
> >> without -O.
> >>
> >
> > Thanks for pointing that out, but I am surprised that a compiler would
> > interpret library routines like strlen.
> >
>
> I just tested it and it turns out that you are right. I'll go hunt to
> see where gcc gets its magic powers from.
>
Even if it wasn't: Why the heck would you want to optimize this? The function
is run _once_ at boot time and the object code gets thrown away afterwards!
Arnd <><
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