These options enable and disable the inlining of functions. Disabling the inlining of functions can help to improve the debug illusion.

When the option --inline is selected, the compiler considers inlining each function. Compiling your code with --inline does not guarantee that all functions are inlined. See Compiler decisions on function inlining in Using the ARM Compiler for more information about how the compiler decides to inline functions.

When the option --no_inline is selected, the compiler does not attempt to inline functions, other than functions qualified with __forceinline.