There are many siblings who have used XST and Synplify Pro, and there are always many siblings who are confused about the results. I just chat with you according to the actual situation.
Analysis of the difference between XST and Synplify comprehensive results
First, take the state machine as an example to explain the different results.
The use of latches in the design of synchronous state machines will also bring about many problems such as timing and stability. In addition, in the case of inconsistent comprehensive optimization parameters, the synthesis results of different synthesizers on the latch may be inconsistent. This article further elaborates this view by analyzing instances where the same state machine has different synthesis results under XST and Synplify.
