On 09.06.2011 20:02, Paul Römer wrote:
> Hi,
>
> What happens if you compile only with -fomit-frame-pointer? I'm not sure
> if it will be activated without adding an -Ox option. Can you add an
> example code?
impulze@istari ~ $ gcc-4.4 -S -fomit-frame-pointer test.c && grep -m1
lea test.s
lea 12(%esp), %edi
impulze@istari ~ $ gcc-4.5 -S -fomit-frame-pointer test.c && grep -m1
lea test.s
lea 12(%esp), %edi
impulze@istari ~ $ gcc-4.6 -S -fomit-frame-pointer test.c && grep -m1
lea test.s
lea 12(%esp), %edi
impulze@istari ~ $ cat test.c
void f()
{
int i;
__asm__ __volatile__("lea %0, %%edi\n"::"m"(i):"%esp");
}
> What gcc you use?
4.4.5, 4.5.2, 4.6.0
--
Mierswa, Daniel
If you still don't like it, that's ok: that's why I'm boss. I simply
know better than you do.
--- Linus Torvalds, comp.os.linux.advocacy, 1996/07/22
