https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61121
Jim Michaels <jmichae3 at yahoo dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|-ftree-parallelize-loops=n |-O2 |(n as value) not accepted |-ftree-parallelize-loops=0 |in 4.9.0 |for maximum not accepted in | |4.9.0 --- Comment #6 from Jim Michaels <jmichae3 at yahoo dot com> --- changed title to something more appropriate since value is always numeric. so give 0 a special meaning. really, there is always a minimum of 1 thread. so the value 0 could be used for the max number of threads on the system or ther max number of threads on the system -1 (1 for the OS to use as a NICE factor).