On 09/18/2012 01:33:11 PM, Marek Vasut wrote:
Dear Scott Wood,
> On 09/18/2012 01:03:17 PM, Marek Vasut wrote:
> > I'd say the GCC must optimize it out anyway.
>
> I think I got some wires crossed and was thinking about printf/puts.
> We want those to be optimized away at compile time (not pointed to a
> stub at link time) on an SPL that has no output support, but once
> that's done the low level serial functions shouldn't be referenced
> anymore, right?
But if you point them to stubs, that's OK. The compiler will GC these
useless
stubs anyway. But wait, we're getting to LTO here, right?
So the safest bet really is macro in serial.h ?
For printf/puts, we want something header-based. For the serial
functions it depends on whether we have call sites that do not get GCed.
-Scott
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
