[llvm] AMDGPU/NewPM: Fill out passes in addCodeGenPrepare (PR #102867)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> I've been seeing a lot of these graphite fails recently. Is this an unavoidable outcome of using it, or is this due to some incorrect usage of the tool. If the latter, can correct usage be documented? 

What do you mean by graphite fails? 

> If the former, we should remove graphite from the LLVM org.

In that case I'd advocate for abandoning pull requests and going back to Phabricator 

https://github.com/llvm/llvm-project/pull/102867