Compiler/MSP430F147: How do I turn the optimizer off for a specific function?

DaveG

Part Number: MSP430F147

Tool/software: TI C/C++ Compiler

I am converting a program from IAR to CCS. Being at the memory limit of my device, I must have the optimizer set to as high as possible for size. That makes debugging difficult. When using IAR, I simply added "#pragma optimize=none" just prior to the function I wanted to remove the optimization from. Does CCS have any equivalent?

over 9 years ago

0 Victor Kazmirenko over 9 years ago

Guru 13202 points

Hello,

I know, there is a

#pragma FUNCTION_OPTIONS ( func, "additional options" );

where you can define additional options for the function. The question what "additional" is? My quick check tells it not only add options, but overrides wider applied options. However, I would not bet for the latter, and you'd better check yourself.

0 George Mock over 9 years ago in reply to Victor Kazmirenko

TI__Guru**** 252440 points

The following line ...

#pragma FUNCTION_OPTIONS(function_name, "--opt_level=off")

disables optimization of that function. For this to have any effect, you must build the source file with some level optimization --opt_level=0 or higher.

Thanks and regards,

-George

0 DaveG over 9 years ago in reply to George Mock

Prodigy 210 points

Thank you. This works.

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Compiler/MSP430F147: How do I turn the optimizer off for a specific function?