saying/having said

[impeccableman]

(A) I remember having said that to you before the accident happened.
(B) I remember saying that to you before the accident happened.

Is there any difference between the above two sentences semantically?

[Marius Hancu]

Yes, a slight one, the first stresses the act being completed, as in:

I remember I had said that to you before the accident happened.

while the 2nd focuses on what happened during the time of the saying.

[Bridget]

I remember having done that.
I remember doing that.