Function IsSignext

FEXCore/Source/Interface/IR/Passes/RegisterAllocationPass.cpp:460–467

}

inline bool IsSignext(const IROp_Header* IROp, OrderedNodeWrapper Src, OpSize Size) {
  if (IROp->Op == OP_SBFE) {
    auto Sbfe = IROp->C<IR::IROp_Sbfe>();
    return Sbfe->Width == 1 && Sbfe->lsb == (IR::OpSizeAsBits(Size) - 1) && Sbfe->Src == Src;
  } else {
    return false;
  }
}

inline bool IsZero(const IROp_Header* IROp) {
  return IROp->Op == OP_CONSTANT && IROp->C<IROp_Constant>()->Constant == 0;