[llvm] [MISched] Compare right next cluster node (PR #116584)

[Pengcheng Wang via llvm-commits]

wangpc-pp wrote:

> Is there any test case that would should this fixing a regression?

Yeah, like what I have written in the description, macro fusion and load/store clustering will be wrong if using bidirectional or bottom up postra scheduling. I found this issue when trying to enable postra scheduling.

https://github.com/llvm/llvm-project/pull/116584