Looking at the channel table and sorting by name, we can focus on the top-level argument A.
Remember that, in contrary to the Dataflow Viewer available after synthesis, Code Analyzer presents you with a dataflow view of your design even if it cannot yet be synthesized in its dataflow form. The channel table contains all the properties required to determine if your design is a synthesizable dataflow design. For instance, you can use it to spot back edges, unsupported accesses to variables, or multiple producer/consumer violations.
The channels created by the variable A in our example lead to multiple producer/consumer violations because it is used 4 times. In the screenshot below, we have sorted the Channel table by name and selected (CTRL+LEFT_CLICK) the 4 channels “A” to get them also highlighted on the graph. We can further notice that only one row of the table has a volume of ~8 kbits which is matching the size of the whole arrays because it is int [16][16] type: 16*16*32=8192 bits; the other 3 lines with a lower volume might be source of potential issues because the whole volume is not consumed – in practice this would indicate partial reads so the user needs to investigate further if FIFO is possible or if an array is the only possible implementation.
We can notice:
loop1 updates F from A
F is not used
So loop1 is not necessary.
Only loop4 makes sense and the path is START -> loop4 -> END for A.
If you look more closely at what happens in loop4 you can see that A is incremented by the value 5 for 15 times – because inner j-loop iterates from 1 to 15. So, this could be further simplified as A[i][0] += 15 * 5 without using the “buffer” array.