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

[Matt Arsenault via llvm-commits]

================
@@ -14,6 +14,7 @@ set(LLVM_LINK_COMPONENTS
   MC
   MIRParser
   Passes
+  SelectionDAG
----------------
arsenm wrote:

This one seems suspicious, does it just get pulled in with the rest of codegen? 

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