[llvm-branch-commits] [llvm] IR: Remove redundant UseList check in addUse (PR #138676)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

> CTMark: https://llvm-compile-time-tracker.com/compare.php?from=a861f50030a9dac28a35654506bb28d2bc239b56&to=a33632206ab5e08caf9e243009f5911400441d01&stat=instructions:u llvm-opt-benchmark: [dtcxzyw/llvm-opt-benchmark#2340 (comment)](https://github.com/dtcxzyw/llvm-opt-benchmark/pull/2340#issuecomment-2868839363)

Surprised it's slightly worse 


https://github.com/llvm/llvm-project/pull/138676