Altera Nios II C2H Compiler - Manual (Page 106)

4–12 9.1 Altera Corporation
Nios II C2H Compiler User Guide November 2009
Performance
Figure 4–4. CPLI Report
The report identifies two assignments containing critical path states. The
data dependency graph for these statements is shown in
Figure 4–5 . The
graph shows that data does not depend on any other statement in the
loop. However, variables crc , lut_addr and table are involved in a
mutually dependent chain of calculations in the critical path. crc ,
lut_addr and table are therefore the critical path variables. The C2H
Compiler displays one critical loop variable ( crc ) as a way of identifying
the critical path.