func (e *ssafn) SplitSlot(parent *ssa.LocalSlot, suffix string, offset int64, t *types.Type) ssa.LocalSlot {
	node := parent.N

	if node.Class != ir.PAUTO || node.Addrtaken() {
		// addressed things and non-autos retain their parents (i.e., cannot truly be split)
		return ssa.LocalSlot{N: node, Type: t, Off: parent.Off + offset}
	}