[llvm] [SimplifyCFG] Simplify switch instruction that has duplicate arms (PR #114262)

[Michael Maitland via llvm-commits]

michaelmaitland wrote:

> Just a note, you might be better off using llvm-testsuite as a benchmark while you iterate. Use the CTMark suite.

Thanks for the info. I emailed @dtcxzyw to see if there was a way to run llvm-opt-benchmarks offline, but hadn't heard back.

https://github.com/llvm/llvm-project/pull/114262