| 1 |
--- Richard Fish <bigfish@××××××××××.org> wrote: |
| 2 |
|
| 3 |
> maxim wexler wrote: |
| 4 |
> |
| 5 |
> >>CFLAGS="-O2 -march=pentium3 -pipe -mcpu=i686 |
| 6 |
> >>-fomit-frame-pointer" |
| 7 |
> >>CXXFLAGS="${CFLAGS}" |
| 8 |
> >> |
| 9 |
> >> |
| 10 |
> > |
| 11 |
> >there seems to be some controversy over the use of |
| 12 |
> >-fomit-frame-pointer. See the gentoo/doc, |
| 13 |
> > IIRC on USE flags. Just what does -fomit etc do? |
| 14 |
> > |
| 15 |
> > |
| 16 |
> |
| 17 |
> The "frame pointer" points to the variables used in |
| 18 |
> a "frame" (read: |
| 19 |
> function). It is useful to have a pointer to these |
| 20 |
> for debugging, but |
| 21 |
> not for much else. fomit-frame-pointer can (on some |
| 22 |
> platforms) allow |
| 23 |
> gcc to re-use that register for the function, and |
| 24 |
> maybe improve performance. |
| 25 |
> |
| 26 |
> There should not be any controversy over it. |
| 27 |
> According to the GCC |
| 28 |
> documentation, it is automatically enabled at all |
| 29 |
> optimization levels. |
| 30 |
|
| 31 |
automatically? So, you can leave it out of CFLAGS? |
| 32 |
|
| 33 |
> |
| 34 |
> -Richard |
| 35 |
> |
| 36 |
> -- |
| 37 |
> gentoo-user@g.o mailing list |
| 38 |
> |
| 39 |
> |
| 40 |
|
| 41 |
|
| 42 |
|
| 43 |
|
| 44 |
__________________________________ |
| 45 |
Start your day with Yahoo! - Make it your home page! |
| 46 |
http://www.yahoo.com/r/hs |
| 47 |
-- |
| 48 |
gentoo-user@g.o mailing list |
Archives