selectively optimize code by file or function

Hoi Wong

I want to tighten code space for some big functions using -ms3 switch while keeping the rest of my code intact because quite a few of them are time critical operations. I'm using an old version of CCS 3.3 with build tools v6.1.10, so #pragma FUNCTION_OPTIONS() is out of question (I tried, the compiler throws a not recognized pragma warning).

Any ideas how I can have finer control over which functions/file to optimize?

Thanks.

over 13 years ago

0 JohnS over 13 years ago

TI__Guru**** 162885 points

You can set file specific compiler options in CCSv3.3 by right clicking on the file in the project manager and selecting "File Specific Options...".

As far as function specific options I don't see a way to do that in the 6.1 compiler manual

http://www.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=spru187o

John

0 desouza over 13 years ago

TI__Guru**** 171309 points

Hi,

You can set compiler options for single files in CCSv3.3 by right-clicking of the file and selecting File Specific Options.

Apart from the pragma FUNC_CANNOT_INLINE or volatile (for variables), I am not aware of any additional pragmas or C keywords that disable optimization in functions, but you can trim the optimization options and check additional details about how the optimizer works on chapter 3 of the C/C++ Compiler User's Guide. Links to the guides are shown at the page below:

http://processors.wiki.ti.com/index.php/Before_asking_for_CGT_support

Hope this helps,

Rafael

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selectively optimize code by file or function