[all-commits] [llvm/llvm-project] ef1088: Revert "[SelectionDAG] Introducing a new ISD::POIS...

[Jakub Kuderski via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ef1088f70356b18dd9af066ed6cea0c8b8d7800a
      https://github.com/llvm/llvm-project/commit/ef1088f70356b18dd9af066ed6cea0c8b8d7800a
  Author: Jakub Kuderski <jakub at nod-labs.com>
  Date:   2025-04-09 (Wed, 09 Apr 2025)

  Changed paths:
    M llvm/include/llvm/CodeGen/ISDOpcodes.h
    M llvm/include/llvm/CodeGen/SelectionDAG.h
    M llvm/include/llvm/CodeGen/SelectionDAGNodes.h
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
    M llvm/test/CodeGen/AArch64/vector-insert-dag-combines.ll
    M llvm/test/CodeGen/X86/half.ll
    M llvm/test/CodeGen/X86/pr119158.ll

  Log Message:
  -----------
  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



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