C6RUN performance on OMPL138

Im working on OMAPL138, the C6RUN tool is working well, but I found that the return time is too long, could anyone do me a favor to improve the performance? I modify the code to run a very simple operation as below:

the result is as below:

 

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The real code and performance is as below:

I do not know what the matter is.

thanks in advance!