[llvm] CFGPrinter: fix accidentally quadratic behavior (PR #125396)

[Christudasan Devadasan via llvm-commits]

cdevadas wrote:

> > Pass MST to printAsOperand.
> 
> I think you forgot to push the changes?

Looks like he pushed it https://github.com/llvm/llvm-project/commit/be99f44b0de2e83e1a6c2ea78b574fcdf8a893cd. But I don't see it either in the PR page. It still indicates "processing update" at the top of the page.

https://github.com/llvm/llvm-project/pull/125396