•Registers are inferred and reported during HDL synthesis.
•The number of Registers inferred during HDL synthesis might not precisely equal the number of Flip-Flop primitives in the Design Summary section.
•The number of Flip-Flop primitives depends on the following processes:
°Absorption of Registers into DSP blocks or block RAM components
°Register duplication
°Removal of constant or equivalent Flip-Flops