Re: Effect of SMS register move scheduling

Hi,

Thanks again for measuring this.

mjpegenc  before:  500000 runs take 7.31085s  after:   500000 runs take 3.04492s  speedup: x2.4

mjpegenc and aacsbr-2 contains simple accumulation without load/store dependence and thus SMS succeeds to improve them. aacsbr-1 also contains such accumulation however doloop fails on it. I will try to run it with the recent patch to avoid using doloop (http://gcc.gnu.org/ml/gcc-patches/2011-07/msg01807.html) and with -fira-algorithm=priority that you discovered avoids the spill issue.

Thanks, Revital