[clang] [lld] [flang] [llvm] [AMDGPU] Introduce GFX9/10.1/10.3/11 Generic Targets (PR #76955)

[Konstantin Zhuravlyov via cfe-commits]

kzhuravl wrote:

> @arsenm Hi, can you take a look - especially on the testing? I don't know if this is tested well enough

I have not looked at the tests thoroughly. Would adding tests that make sure trimmed features are not used in generics be beneficial? E.g. testing that generic-gfx9 does not have the dl-insts feature.

https://github.com/llvm/llvm-project/pull/76955