[llvm] [InstCombine] Retain debug information on store to null instruction (PR #86105)

[Abinaya Saravanan via llvm-commits]

quic-asaravan wrote:

@OCHyams Thanks for the reduced test case. @dwblaikie Can you please let us know if this is enough coverage? If yes, can we merge it ?


https://github.com/llvm/llvm-project/pull/86105