[llvm] [InitUndef] Also handle inline asm (PR #108951)

[Nikita Popov via llvm-commits]

nikic wrote:

@Stylie777 I've added one for vcaddq. I confirmed that it previously allocated q0, q0, q0 and generated an "Qd register and Qm register can't be identical" error.

https://github.com/llvm/llvm-project/pull/108951