In SelectionDAG, what's the difference between getConstant and
getTargetConstant? One creates a node with opcode Constant and the
other with TargetConstant. What's the semantic difference?
In X86ISelLowering I need to create a constant vector and put
it in memory so I can reference it as an operand. I don't see
any examples of doing this. Is it possible? If so, what's the