[Bug tree-optimization/80613] [8 Regression] ICE in is_gimple_reg_type with -O2

[prathamesh3492 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80613

--- Comment #9 from prathamesh3492 at gcc dot gnu.org ---
As suggested by Richard, the commit partially reverts r247407 by removing the
hunk from propagate_necessity().

Thanks,
Prathamesh