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Exact polyhedral model (PM) can be built in the general case if the onlycontrol structures are {\tt do}-loops and structured {\tt if}s, and if loopcounter bounds, array subscripts and {\tt if}-conditions are affine expressionsof enclosing loop counters and possibly some integer constants. In more generaldynamic control programs, where arbitrary {\tt if}s and {\tt while}s areallowed, in the general case the usual dataflow analysis can be only fuzzy.This is not a problem when PM is used just for guiding the parallelizingtransformations, but is insufficient for transforming source programs to othercomputation models (CM) relying on the PM, such as our version of dataflow CMor the well-known KPN.  The paper presents a novel way of building the exact polyhedral model and anextension of the concept of the exact PM, which allowed us to add in a naturalway all the processing related to the data dependent conditions. Currently, inour system, only arbirary {\tt if}s (not {\tt while}s) are allowed in inputprograms. The resulting polyhedral model can be easily put out as an equivalentprogram with the dataflow computation semantics.

Yet Another Way of Building Exact Polyhedral Model for Weakly Dynamic Affine Programs