Cleanup C frontend function deferring

[Geoff Keating]

Jan Hubicka <jh@suse.cz> writes:

> Hi,
> this patch removes function deffering mechanizm from C frontend and moves it to
> cgraph code only.  The cgraph code is also updated to deal with
> non-unit-at-a-time compilation.  This avoids code duplication in between the
> frontend and cgraphunit and moves all the rather complicated decisions about
> what to compile when into one place (in fact it has been surprisingly dificult
> to get it "right" so we pass all the checks in the testsuite).
> 
> I would like to update the other frontends the same way gradually even when it
> won't be easy at all for C++, but the code duplication in the compilation
> driving logic is unforutnate.
> 
> I also implemented incremental inlining decision heuristics sharing
> infrastructure with current unit-at-a-time inlining heuristics code that seems
> to be superrior to the current one in tree-inline.c, but I guess this should
> not go in before all frontends are moved to cgraph code as we don't want to
> have three different heuristics to tune at once, so this won't happen before
> 3.3 is out.
> 
> Honza
> 
> Sun Aug 31 22:00:39 CEST 2003  Jan Hubicka  <jh@suse.cz>
> 	* Makefile.in (c-objc-common.o): Kill gt-c-objc-common.h dependency.

You should probably also change the definition of GTFILES...

(I bet there's a way to do this with GNU make that doesn't require you
to change three places every time you add or remove the only GTY in
a file.)

-- 
- Geoffrey Keating <geoffk@geoffk.org>