performance - What are the effects of code bloat in C++? -

i can't find other explanation other "it's unnecessarily longer binaries". mean? how having more executable code under hood of program bad? ignoring readability benefits is.

for example:

template<int a, int b, int c> void dosomething(){      if( == 1 ){         ...     }         if( b == 1 ){         ...     }     if( c == 1 ){         ...     } } 

in case there maximum of 3*3=9 possible combinations of way function can execute code, ignoring optimizations of course.

so what's big deal? saves me lots of readability headaches , compacts how write.