[llvm] [BOLT] Add --clone-at-origin option (PR #181003)

[Paschalis Mpeis via llvm-commits]

https://github.com/paschalis-mpeis commented:

Hey Maksim,

Thanks for the patch. I haven't had a look at it yet, but I get the below failure:

```                  
Failed Tests (1):                                                                                                        
  BOLT :: runtime/exceptions-clone.cpp 
```

```
# .---command stderr------------                             
# | /home/pasmpe01/src/llvm-project-wktr/bolt-review/bolt/test/runtime/exceptions-clone.cpp:50:24: error: CHECK-SKIPPED-CA
LL: expected string not found in input                       
# | // CHECK-SKIPPED-CALL: jmp{{.*}}<catch_exception.clone.0>                                                             
# |                        ^                                 
# | <stdin>:6:35: note: scanning from here                                                                                
# | 0000000000210bac <caller_skipped>:                                                                                    
# |                                   ^                                                                                   
# | <stdin>:13:25: note: possible intended match here                                                                     
# |  210bc4: 17ffffe9 b 0x210b68 <catch_exception.clone.0>

```

https://github.com/llvm/llvm-project/pull/181003