[llvm] [NewPM][CodeGen] add TargetPassConfig like API (PR #70906)

[via llvm-commits]

paperchalice wrote:

> Hi @paperchalice !
> 
> Do you plan on adding certain api's like `insertPass `and `disablePass `in a seperate PR ? I am building a basic backend pipeline for AMDGPU therefore I am in need of these.

Hi, thanks for your interest in this! Currently the migration work is still in early stage, building pipeline for a specific backend might too early. If you really need it, I will open another pull request to support it.

https://github.com/llvm/llvm-project/pull/70906