# convolution and frequncy response

I have a sinusiodal signal x in time domain.I have done the convlotion as followings using matlab: y=conv(x,x) and y=conv(x,fliplr(x)). Observing the result by Matlab, both of the above signal giving the same result in frequency domain. Why do you think is that?

P.S: FLIPLR(X) returns X with row preserved and columns flipped in the left/right direction.

X = 1 2 3     becomes  3 2 1
4 5 6              6 5 4