编译器优化问题

TMS320C28x Optimizing C++ Compiler v6.0 User Guide (Rev. D) .pdf中对于优化设置的位置没有详细说明，有没有更加详细的文档；还有就是*.nfo文件中的信息只能详细到这个程度吗，还是我设置的不对？

extern unsigned _FlashEraseCallBack() is called from 1 sites in this file.
It appears to be inlineable (size = 20 units)
It has 3 non-trivial scope blocks nested 3 deep.
It calls these functions:
F28x_usDelay() (1 times)