jhuber6 wrote:

> ...but I wonder when that's actually desired...?

I was more interested in closing a local bug than arguing about LLVM semantics. 
IMO I think that `optnone` should not prevent IPO from making optimizations 
through the function, but should prevent optimizations in the function itself. 
This is different from putting `noipa` on everything. E.g.

```c
i32 foo() optnone {
  return 1;
}

i32 bar() {
  return foo();
}
```
Should still be able to optimize bar() to just `return 1;` IMO.

https://github.com/llvm/llvm-project/pull/218782
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