[lld] [LLD][COFF] Create EC alias symbols for entry points and exports (PR #114297)

[Martin Storsjö via llvm-commits]

https://github.com/mstorsjo approved this pull request.

LGTM, thanks! One minor nit, but otherwise this looks quite straightforward, implementation wise.

https://github.com/llvm/llvm-project/pull/114297