How does coding style in RTL impact synthesis QoR?

From my experience, coding style makes a huge difference in synthesis QoR. If you write clean, structured RTL with proper use of non-blocking assignments and clear hierarchy, the tool can optimize better. For example, using case instead of a long chain of if-else often results in faster logic with less area.

RTL style is like giving hints to the synthesis tool. If you code with proper resource sharing, clock gating, and consistent resets, you usually get better power, area, and timing. I remember a case where rewriting a memory access block reduced area by 20% just because the coding was more tool-friendly.

I have noticed that poor coding style can really hurt QoR. For instance, mixing blocking and non-blocking assignments in the same block creates unpredictable timing and poor synthesis results. You may also see extra latches inferred by mistake. So, I always tell juniors: write RTL with synthesis in mind, not just simulation.