My IDE is arm keil4 and keilv5. And I want to know what the compiler really do when the optimization is turn on(-o1 -o2 -o3 and cross module optimization).
I just found some brief descriptions. But is there any documentations that describe it in detailed?
Thanks a lot!
Does this application notes http://www.keil.com/appnotes/files/apnt202.pdf and http://www.keil.com/appnotes/files/apnt_298.pdf help?