[clang] [llvm] [RFC] Better devirtualization for non-virtual interface (PR #185087)

[Nikita Taranov via cfe-commits]

nickitat wrote:

> # 🐧 Linux x64 Test Results
> * 178339 tests passed
> * 4322 tests skipped
> * 1 test failed
> 
> ## Failed Tests
> (click on a test name to see its output)
> 
> ### XRay-x86_64-linux
> XRay-x86_64-linux.TestCases/Posix/basic-filtering.cpp
> If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at [llvm/llvm-project/issues](https://github.com/llvm/llvm-project/issues?q=sort%3Aupdated-desc+is%3Aissue+is%3Aopen) and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/186611

https://github.com/llvm/llvm-project/pull/185087