Functions Excluded from Cache Aware Layout Tool

Brad Griffis

For c6000 CGT 7.0.x is there a list of functions that get excluded from the cache aware layout tool? For example I've seen cache thrashing due to the floating point division routine (_divf). Is this one of the excluded functions? In this case we are actually trying to use the fastrts version though I believe it's being excluded regardless. Is that correct? Is there any way to include it again (or to include the fastrts version)? What's the mechanism used to exclude functions?

over 14 years ago

0 George Mock over 14 years ago

TI__Guru**** 249390 points

Cache layout does not affect placement of the RTS functions, or any function not rebuilt from source during the instrumented build step that uses --gen_profile_info. To have a function such as divf be included, you need to extract the source from the RTS library and build it along side the application code.

Thanks and regards,

-George

0 Brad Griffis over 14 years ago in reply to George Mock

TI__Guru*** 125430 points

Thanks, George. That makes sense and shouldn't be a problem for the fastrts functions. I wish it was a little easier to "pull out" a function from the RTS library though! Hopefully those won't be too much of an issue with the revamped fastrts library that's coming out soon.

0 Brad Griffis over 14 years ago in reply to Brad Griffis

TI__Guru*** 125430 points

Is it possible to build an instrumented version of the libraries? Specifically:

Rebuild the RTS library with --gen_profile_info
Add the instrumented RTS library to project
Rebuild project with --gen_profile_info
Run executable to collect data.

0 George Mock over 14 years ago in reply to Brad Griffis

TI__Guru**** 249390 points

That should work. Though I've never tried.

-George

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Functions Excluded from Cache Aware Layout Tool