[llvm] [SelectionDAG] Introducing a new ISD::POISON SDNode to represent the poison value in the IR. (PR #125883)

[zhijian lin via llvm-commits]

diggerlin wrote:

> > I will create a fix PR with your test case, after the fix PR approved, I revert your revert of this PR before I land the fix PR. iIs it OK ?
> 
> I don't understand... Do you want to revert this PR or not?

I think you have reverted  this PR  (https://github.com/llvm/llvm-project/commit/36cb81cced6c) . we need to revert your revert first, is it correct ?

https://github.com/llvm/llvm-project/pull/125883