llvm/llvm/unittests/CodeGen/MFCommon.inc

// Add a few Bogus backend classes so we can create MachineInstrs without
// depending on a real target.
class BogusTargetLowering : public TargetLowering { … };

class BogusFrameLowering : public TargetFrameLowering { … };

static TargetRegisterClass *const BogusRegisterClasses[] = …;

class BogusRegisterInfo : public TargetRegisterInfo { … };

class BogusSubtarget : public TargetSubtargetInfo { … };

static TargetOptions getTargetOptionsForBogusMachine() { … }

class BogusTargetMachine : public LLVMTargetMachine { … };

BogusTargetMachine *createTargetMachine() { … }

std::unique_ptr<MachineFunction> createMachineFunction(LLVMContext &Ctx,
                                                       Module &M) { … }