[llvm] [llvm-lib][Object] Add support for EC importlib symbols. (PR #81059)

[Jacek Caban via llvm-commits]

================
@@ -1362,6 +1362,47 @@ class SectionStrippedError
   SectionStrippedError() { setErrorCode(object_error::section_stripped); }
 };
 
+inline std::optional<std::string>
+getArm64ECMangledFunctionName(StringRef Name) {
----------------
cjacek wrote:

I added removing the copy in the new version (I will squash when pushing).

https://github.com/llvm/llvm-project/pull/81059