[llvm] [TargetVerifier][AMDGPU] Add TargetVerifier. (PR #123609)

[Shilei Tian via llvm-commits]

shiltian wrote:

> Main thing is it would be really nice for this to be a hook that the usual verifier calls into as opposed to a separate pass, as verify is already in the debugging flow for lots of people.

I agree with this. It could be just a new function in TTI.

> Adding the hook... Please let me know what you think.

It still looks like we have a dedicated pass.

https://github.com/llvm/llvm-project/pull/123609