[llvm] [CodeGen][ARM64EC] Use MCSymbolRefExpr::VK_None for function aliases. (PR #92100)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

Maybe consider pre-committing arm64ec-symbols.ll.

I'd like to see the tests show the effect on the emitted symbols using llvm-objdump, in addition to the asm... from what I recall, the weakref hack was necessary to make the emitted symbols have the right COFF attributes.  If it's not necessary, that's fine, I guess.

https://github.com/llvm/llvm-project/pull/92100