TMS320F280039: Compiler speed vs. size trade offs options

There might be some differences.  But it won't be much.  The option --opt_level (-O is a short equivalent) indicates how much of the code the compiler considers at one time when making optimization decisions.  Most optimizations improve both speed and size.  But a few optimizations trade-off speed and size. i.e. they improve one while degrading the other.  For those few optimizations, the --opt_for_speed setting is how you tell the compiler to balance that trade-off.  Therefore, you generally want --opt_level to be as high as possible, without regard to the setting of --opt_for_speed.

Thanks and regards,

-George