To avoid issues shown in the previous figure (Function and Loop Pipelining), the
PIPELINE pragma has an optional command rewind. This command enables the overlap
of the execution of successive calls to the loop, when this loop
is the outermost construct of the top function or of a dataflow
process (and the dataflow region is executed multiple
times).
The following figure shows the operation when the rewind option is used when
pipelining a loop. At the end of the loop iteration count, the
loop starts to execute again. While it generally re-executes
immediately, a delay is possible and is shown and described in
the GUI.
