Hi, > I was wondering if it was possible to turn off the unrolling to > certain loops. Basically, I'd like the compiler not to consider > certain loops for unrolling but fail to see how exactly I can achieve > that. > > I've traced the unrolling code to multiple places in the code (I'm > working with the 4.3.2 version) and, for the moment, I'm trying to > figure out if I can add something in the loop such as a note that I > can later find in the FOR_EACH_LOOP loops in order to turn the > unrolling for that particular loop off. > > Have you got any ideas of what I could use like "note" or even a > better idea all together?
the normal way of doing this is using a #pragma. For instance, icc implements #pragma nounroll for this purpose. I have some prototype implementation for gcc, I can send it to you if you were interested in finishing it, Zdenek
