Hello everybody,
looking through the sources I found several pieces like
lib/vsprintf.c, line 111:
const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
As tested with egcs-2.91.60 even with -O3 there is a difference
between
const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
and
const char digits[]="0123456789abcdefghijklmnopqrstuvwxyz";
in the resulting assembler code.
Usage of this pointer results in it being loaded in a register, and then
pushed on the stack (for subrouting using); if it's an array, the address
is pushed directly.
Furthermore, in the "char *"-case the pointer is stored in memory.
As I'm not at home I can't give a complete reference of all these cases.
(But it's trivial [at least for me :-)] using perl).
So if this changes are approved and I have the time I can post a diff in
the next few days.
BTW: For which size of patch is it possible to get included in the "Hall of
fame" (has helped with linux kernel)?
And, btw too, where can I find a maintainer of a specific file? eg., one of
these cases is in init/version.c which has "Copyright (C) 1992 Theodore
Ts'o" - but I have to guess it's tytso@valinux.com.
Is there something like Documentation/maintainers?
Regards,
Phil
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This archive was generated by hypermail 2b29 : Fri Feb 23 2001 - 21:00:27 EST