I've seen '' Would have + ed '' in the sense of have + ed or just ed. why ? for example :
Context : '' Z had no house because he's poor but now he has a house. A and B his friends are wondering how he did to buy it. ''
A to B: According to what C said V would have helped Z to buy his house. What do you think?
B to A: I don't think V (have) helped Z buy his house..