[llvm] [MISched] Use right boundary when trying latency heuristics (PR #116592)

[Min-Yih Hsu via llvm-commits]

https://github.com/mshockwave commented:

I suppose this doesn't cause a crash, do you have any example that shows inferior scheduling, which potentially can be a test case?

https://github.com/llvm/llvm-project/pull/116592