https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95775
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
Component|target |ipa
Severity|normal |enhancement
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
But it will blow up code-size considerably. Eventually with -flto and the
library constraining on what symbols it exports one could figure the
minimal set of functions with IFUNC relocations at least. Using
profile-feedback
might also able to concentrate on interesting functions.
So without some major work I don't think simply slapping target_clones on
each function is going to fly in practice.
Eventually it should be possible to do sth like target_clones(auto) where
with a new option, the target (or the user) can define "default" targets
to clone for but the user still figures which are the important functions
to optimize [and GCC may, via IPA "spread" the cloned cgraph portion a bit].
