[llvm] AMDGPU: Make s_wait_samplecnt(_bvhcnt) dependent on hasImageInsts, NFC (PR #83932)

[Jay Foad via llvm-commits]

https://github.com/jayfoad commented:

This is really stretching the definition of "image instruction", but I guess it's OK.

https://github.com/llvm/llvm-project/pull/83932