[Bug target/124137] [16 Regression] build doesn't finish after 4h+

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124137

--- Comment #17 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #16)

> There's still a correctness (IMO) patch pending.  Possibly, as FLAGS_REG
> should not be live across edges and the relevant hardregs should only

IIRC, compare-elim.cc can make flags reg live across edges.