[llvm] [GlobalOpt] Handle operators separately when removing GV users (PR #84694)

[Eli Friedman via llvm-commits]

https://github.com/efriedma-quic commented:

I think the testcase is just running a program that stores the result of a malloc to an internal global variable under valgrind.  I don't have any specific examples handy; maybe someone else does.

https://github.com/llvm/llvm-project/pull/84694