[llvm] [PseudoProbe] Add PseudoProbeDescUpdatePass (PR #99839)

[Lei Wang via llvm-commits]

wlei-llvm wrote:

> Compiler generated functions are not unique to partial inline. Coroutine split is another example. How is that handled and how is partial inline different? cc @wlei-llvm

We use debug info symbol so that the different suffix function can be mapped to the original function, it seems also applicable to partial inlining. but maybe the debug info is only missing for that function:

```
  if (auto *SP = F.getSubprogram()) {
    FName = SP->getLinkageName();
    if (FName.empty())
      FName = SP->getName();
  }
```

https://github.com/llvm/llvm-project/pull/99839