[llvm] Treat ';' and '\n' as assembly instruction separators in collectAsmInstrs (PR #149365)

[Rahman Lavaee via llvm-commits]

rlavaee wrote:

> This would break Mach-O, which uses `;` as a comment marker.
> 
> See `CommentString = ";";` in MCAsmInfo.cpp files. Unfortunately, IR cannot depend on MC..

Thank you. Removed the handling of ';' as instruction separator.

https://github.com/llvm/llvm-project/pull/149365