------- Comment #25 from dominiq at lps dot ens dot fr 2010-03-20 10:45 ------- > We are executing the range [scat_1+1, T_10-2] before executing the > range [0, scat_1-1].
Do you understand why graphite does not detect that the loop for [scat_1+1, T_10-2] depends on the one for [0, scat_1-1]? Second question why does graphite exchange the order of the split loops? Note also that in the original loop handling the loop for [0, scat_1-1] is tricky when scat_1==1 (fctr = fctr1*fctr2 and fctr2 = -o*fctr2 must be handled correctly). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42181
