Question about overloaded operators

[Iyer, Balaji V]

Hello Everyone,
        In C++, when a binary/unary operator is overloaded, then the 
build_x_[binary/unary]_op replaces it with a call expression. Is there  a way 
to know from the call expression (assume we are in the gimplification stage) 
what the operator is? I tried to look around but I didn't find any obvious way 
to figure this info out.

Thanks,

Balaji V. Iyer.