[compiler-rt] [llvm] [ORC] Fix missing support of deinitialize on ELF platform and execution order by priority (PR #175981)

[Yaxing Cai via llvm-commits]

cyx-6 wrote:

Sure, I will add the testcase to `compiler-rt/test/orc/TestCases/Linux/Generic` @lhames. Btw, do we have a doc about the testcases workflow? I am not very clear how thos `lit*` files and comments in the source codes work.

https://github.com/llvm/llvm-project/pull/175981