[llvm] [LTO] Handle GlobalIFunc in LTOModule::parseSymbols (PR #212515)

[Marina Taylor via llvm-commits]

citymarina wrote:

@w2yehia I'm curious why the AIX/XCOFF behavior is scoped only to that platform, did you run into any particular issues in the general case?

https://github.com/llvm/llvm-project/pull/212515