[llvm] [DAG] shouldReduceLoadWidth - hasOneUse should check just the loaded value - not the chain (PR #128167)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> @arsenm any preference for updating CMakeLists or making it inline?

I don't exactly follow how only this one case needs to be inline to fix the failures. It's an all or nothing problem?

https://github.com/llvm/llvm-project/pull/128167