On Monday 20 August 2007 19:56, Jan Hubicka wrote:
> > > > The problem is with the optimization flags: passing -Os causes the
> > > > compiler to be stupid and not inline any memset/memcpy functions.
> > >
> > > you get what you ask for.. if you don't want that then don't ask for
> > > it ;)
>
> > > The problem is with the optimization flags: passing -Os causes the
> compiler
> > > to be stupid and not inline any memset/memcpy functions.
> >
> > you get what you ask for.. if you don't want that then don't ask for
> > it ;)
>
> Well, the compiler is really being dumb about -Os and
> so the code gets bigger and worse in every way.
I guess it would make sense to file this as a bug in the gcc
bugzilla
Another useful enhancement might be to have a -finline-string-functions
or similar that could be set with -Os. In general I've been wondering
for some time if the kernel really
> > The problem is with the optimization flags: passing -Os causes the compiler
> > to be stupid and not inline any memset/memcpy functions.
>
> you get what you ask for.. if you don't want that then don't ask for
> it ;)
Well, the compiler is really being dumb about -Os and in fact it's
giv
On Mon, 2007-08-20 at 08:52 -0700, Stephen Hemminger wrote:
> The problem is with the optimization flags: passing -Os causes the compiler
> to be stupid and not inline any memset/memcpy functions.
you get what you ask for.. if you don't want that then don't ask for
it ;)
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On Sun, 19 Aug 2007 20:24:24 +0200
Andi Kleen <[EMAIL PROTECTED]> wrote:
>
> > I am looking at current source, built with current (non-experimental) GCC
> > from Fedora Core 7. If I dissassemble ether_setup, which is
> >
> > void ether_setup(struct net_device *dev)
> > {
> > ...
> >
> > mem
> I am looking at current source, built with current (non-experimental) GCC
> from Fedora Core 7. If I dissassemble ether_setup, which is
>
> void ether_setup(struct net_device *dev)
> {
> ...
>
> memset(dev->broadcast, 0xFF, ETH_ALEN);
> }
>
> I see a tail recursion (jmp) to memset which
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