When doing a simulation involving Nios® II, is there any way to reduce the time it takes for the main() function to start?

When using ModelSim^® from the Nios^® II Software Build Tools (SBT) for Eclipse to perform simulations that also include software, BSP Editor's enable_sim_optimize checkbox in the BSP Editor, some processing at startup will be omitted (*1), shortening the time until the main() function is executed.

1 Code built with this option checked cannot be used in the actual application.

[ BSP Editor ].

In a simple design example, enable_sim_optimize is unchecked, the time to main() function is 569.495 us, The time to main() function when enable_sim_optimize is checked, the time to main() function is 551.405 us.

The difference is about 18 us, but it is shorter.

[ enable_sim_optimize : OFF ]

[ enable_sim_optimize : ON ]

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Category: Nios^® II 
Tools: Nios^® II EDS / ModelSim^®-FPGA Edition 
Device: -