220.127.116.11. Guideline: Optimize Source Code
You can often improve logic significantly by making design-specific changes to your source code. This is typically the most effective technique for improving the quality of your results.
If your design does not fit into available logic elements (LEs) or ALMs, but you have unused memory or DSP blocks, check if you have code blocks in your design that describe memory or DSP functions that are not being inferred and placed in dedicated logic. You might be able to modify your source code to allow these functions to be placed into dedicated memory or DSP resources in the target device.
Ensure that your state machines are recognized as state machine logic and optimized appropriately in your synthesis tool. State machines that are recognized are generally optimized better than if the synthesis tool treats them as generic logic. In the Intel® Quartus® Prime software, you can check for the State Machine report under Analysis & Synthesis in the Compilation Report. This report provides details, including the state encoding for each state machine that was recognized during compilation. If your state machine is not being recognized, you might have to change your source code to enable it to be recognized.
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