@Override
	default boolean canBeRemoved() {
		AddressSpace space = out().varnode().getAddress().getAddressSpace();
		return space.isUniqueSpace() || space.isRegisterSpace();
	}
A p-code operator use-def node with an output
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/emu/jit/op/JitDefOp.java