[Bug middle-end/113907] [14 regression] ICU miscompiled since on x86 since r14-5109-ga291237b628f41

["rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113907

--- Comment #34 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 15 Feb 2024, jakub at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113907
> 
> --- Comment #32 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> (In reply to Jan Hubicka from comment #31)
[...]
> > Not streaming value ranges is an omission on my side (I mistakely assumed we
> > do stream them).  We ought to stream them, since otherwise we will lose
> > propagated return value ranges in partitioned programs, which is pity.
> 
> Not sure if it is a good idea to start streaming them now in stage4, but sure,

Please don't do that now ;)

(we've not had ranges early originally, and even nonzero bits were not
computed)

But yes, IPA CP jump functions with value-ranges might be a problem.
I think it does instantiate them as local ranges, does it?  We
have streaming support for ranges, we just don't stream the auxiliary
data for all SSA names (like also not points-to info).