llvm-project

ef1088f7 - Revert "[SelectionDAG] Introducing a new ISD::POISON SDNode to represent the poison value in the IR." (#135060)

Revert "[SelectionDAG] Introducing a new ISD::POISON SDNode to represent the poison value in the IR." (#135060) Reverts llvm/llvm-project#125883 This PR causes crashes in RISC-V codegen around f16/f64 poison values: https://github.com/llvm/llvm-project/pull/125883#issuecomment-2787048206