Small vs Standard C++ Execution Speed

Hi Anand,

Thanks for the info.

I'm using the NIOS 2/f in both configurations. Actually, it's exactly the same .qsys and .sopcinfo in both configurations because I have two software projects in the Eclipse software sub folder.

I used WinMerge to compare the two settings.bsp XML files. Here's what I found:

For the last column, I modified the standard BSP setttings to make them the same as the small BSP settings as a control test. Considering that there is a 5x speed difference, more is going on than I am aware of.

The description in the BSP Editor doesn't fully describe what the options mean, e.g. no mention of -Os.

I tried searching the PDF you linked to for the above settings and identifiers, e.g. BSP_CFLAGS_OPTIMIZATION and -O2 but nothing pertinent showed up.

Do you know where I can find detailed descriptions of the above parameters?

I found some info here: https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#Optimize-Options

And sorry to bother you about such basic stuff, but I'm struggling to find the info.

Thanks,

Tim.