[llvm] [CodeGen] Fix PreISelLowering not reporting changes (PR #102184)

[Roger Ferrer Ibáñez via llvm-commits]

https://github.com/rofirrim approved this pull request.

Right, IIRC we may only change the mask/evl but leave the intrinsic in place.

LGTM. Thanks.

https://github.com/llvm/llvm-project/pull/102184