Inlining class methods

d200guy

Intellectual 555 points

Other Parts Discussed in Thread: TMS320C28345

DSP: TMS320C28345

PC: Windows XP

IDE: Code Composer 4.1.2

BIOS: 5.41

I have a math-intensive application. I wrote a C++ class for a vector to simplify my code, but I want it to execute as fast as possible, so I tried making all the methods "inline" (in a header file). It doesn't appear that the inlining it working though.

I found a paragraph in SPRU514C, section 2.11.5. The first inline restriction is that a function cannot be inlined if it returns a struct or union. For example, my vector addition method returns a vector object. It's probably considering this a struct and disqualifying my inline attempt.

Questions:

- Am I understanding the issue correctly so far?

- Are there any other options I should investigate besides using preprocessor macros?

over 13 years ago

0 d200guy over 13 years ago

Intellectual 555 points

I just got an e-mail that my post was moved from the "Code Composer Forum" to the "Code Composer Forum" and now I can't find it in the listing of posts. Maybe this reply will get me put back in the list.

0 d200guy over 13 years ago

Intellectual 555 points

Maybe I don't have a problem afterall. I turned optimzation on and now the ASM looks like the function calls are inlined. I guess I thought the documentation was pretty clear that my classes would never get inlined.

0 George Mock over 13 years ago in reply to d200guy

TI__Guru**** 232750 points

As you have found, you have to compile with optimization level 2 or higher, i.e. options -o2 or -o3, for inlining to occur. C++ users will find additional helpful information on inlining here http://processors.wiki.ti.com/index.php/C%2B%2B_Inlining_Issues .

The documentation on "Inlining Limitations" is out of date. Functions which return structs may be inlined. I filed id SDSCM00037208 in the SDOWP system to have this fixed. Feel free to track that at the SDOWP link in my sig below.

Thanks and regards,

-George

0 d200guy over 13 years ago in reply to George Mock

Intellectual 555 points

Thank you very much for the info. Since the documentation is out-of-date, my experience now makes complete sense. Thanks again!

Code Composer Studio™︎

Code Composer Studio forum

Inlining class methods