about CW11''s optimsize difference for O1 and O3

[teddywang]

hi all

   My client uses S9KEAZN64 with CW11,found that a operation for internal EEPROM,CW11 has 2 optimsize leve,one is O1 ,another is O3,my client found the function has some error,when use optimize -O3. my client wants to know the difference O1 and O3

[jorge_a_vazquez]

Hi Teddy Wang

Please check the following links:

https://www.nxp.com/docs/en/reference-manual/CWMCUGCCCMPREF.pdf#page=12 

https://www.nxp.com/docs/en/application-note/AN4808.pdf 

You can also find the MCU_Kinetis_GCC.pdf document under:

CW MCU v11.0_path\MCU\Help\PDF

Here you can find the difference between those optimization levels.

Hope this information could help you, please don't hesitate to contact me if you have any other question.

Best regards

Jorge Alcala