Following paper makes case of Dependence Flow Graph and how it can be used to implement a transformation algorithm with example for constant propagation algorithm.  Actually, Dependence Flow Graph can be used in High Level Synthesis too to perform various optimizations and to calculate cost associated with various tradeoffs.

Paper has made an interesting observation (as an analogy) about Arabic-Hindu numeral representation. By using Arabic-Hindu system, it is much easier to perform  complex arithmatic operations as against Roman numeral system. How true!

Interesting read @ Dependence Flow Graph