[llvm] [SPIR-V] Disable Machine Sink pass in SPIR-V Backend (PR #116060)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

@michalpaszkowski @Keenuts This PR is a reminder that https://github.com/llvm/llvm-project/pull/110507 doesn't resolve _all_ issues related to OpPhi in SPIR-V.

https://github.com/llvm/llvm-project/pull/116060