OS_TASK_OPT_SAVE_FP for NIOS?

when creating tasks using OSTaskCreateExt(), the last argument, "opt" can take this bit field:

OS_TASK_OPT_SAVE_FP

Is this something that should be set when using Nios II with floating point HW? The reason I ask is enabling this option seems to break my project. I'm not sure if the MicroCosII port for Nios uses this option or not? Any help with this option is greatly appreciated.:confused: