[Bug rtl-optimization/115876] [15 regression] ext-dce.cc has ubsan issues; shifting negative values

[jamborm at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115876

--- Comment #20 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Indeed, the UBSAN failures I see now look like they are all PR 116370.  Thanks!