[llvm] [AMDGPU] Check bundled instructions in canUsePressureDiffs (PR #227620)

[Pierre van Houtryve via llvm-commits]

Pierre-vh wrote:

> do you have any insight into why this check skips implicit operands in the first place?

I am not sure, it's been a while since I touched this code. I think it's the kind of patch where I focused a bit too much on one specific set of cases and forgot about the bigger picture. I don't see any reason why this should skip implicit operands.

https://github.com/llvm/llvm-project/pull/227620