[llvm] [CodeGen][MISched] Handle empty sized resource usage. (PR #75951)

[Michael Maitland via llvm-commits]

michaelmaitland wrote:

> One more comment, either remove the "empty interval optimisation", or expand the comment to make clear it is an optimization and not a functional change.

Hi @fpetrogalli, I made a comment in the thread above explaining why it is more than just an optimization.

https://github.com/llvm/llvm-project/pull/75951