[Bug middle-end/111799] [14 Regression] Missed Dead Code Elimination since r14-2365-g2e406f0753e

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111799

--- Comment #6 from Jeffrey A. Law <law at gcc dot gnu.org> ---
I'd hazard a guess we need to first eliminate the ad = &c assignment.  That
should in turn allow us to realize ad is unchanging.