Optimization level selection problems

beaver

I found two problems in selecting the optimization level in the "build option" of CCS3.3.

Problem 1: For the same project (a median filter project on C6455 Simulator), the results produced by using option "-o1" and "-o0" are correct, but the results by "-o2" and "-o3" are totally wrong, how comes? How to avoid this problem?

Problem 2: The second problem is still on the optimization level in CCS3.3.When I select the "-o2" option, the compiler can quickly compile the file (less than 1 second) and the results are correct. However, when I select the "-o3" option on the same project, same file, the compiler stucks for ever. Any idea about this problem and any suggestions?

over 15 years ago

0 Brad Griffis over 15 years ago

TI__Guru*** 125430 points

What compiler version are you using (Help -> About)? Here's an article on updating your compiler:

http://tiexpressdsp.com/index.php/Compiler_Installation_and_Selection

I recommend getting the latest of whatever minor version you're using, i.e. 6.0.x or 6.1.x. It's quite possible that the issues you're experiencing have already been solved. If not, we'd like to have a reproducible test case to give to our compiler team so they can fix the problem.

Brad

0 beaver over 15 years ago in reply to Brad Griffis

Intellectual 575 points

I have tried to updated the compiler as you instructed. I used the version 6.1.13 (the most updated one) for both cases.

For the problem 1, the problem remains.

For the problem 2, the problem was resolved.

0 Brad Griffis over 15 years ago in reply to beaver

TI__Guru*** 125430 points

Please put together a simple test case demonstrating the issue. The compiler team can have a look.

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Optimization level selection problems