[llvm] [VPlan] Refine the debug location passing for VPWidenIntrinsicRecipe (PR #113887)

[David Sherwood via llvm-commits]

https://github.com/david-arm approved this pull request.

LGTM! This seems like a sensible clean-up. The constructor variant taking the original instruction can use the debug location from that and the other variant was dropping the debug info, whereas now it's actually using it.

https://github.com/llvm/llvm-project/pull/113887