You should see listed in the compiler toolchain window. Free Edition vs. PRO Edition Optimizations
The standout feature of the XC8 v2.0 series is OCG. Unlike older compilers that compile each file individually, OCG works by analyzing the entire program at once. This enables the compiler to: mplab xc8 compiler v2 05 download free
MPLAB XC8 Compiler v2.05 Download Free
It includes basic optimizations (O1) which are sufficient for most hobbyist and entry-level professional projects. You should see listed in the compiler toolchain window