------- Additional Comments From dorit at il dot ibm dot com 2005-02-12 16:35 ------- We fail to vectorize with: wagi.cc:43: note: not vectorized: unhandled data ref: D.31081_39 = this_3->wagi wagi.cc:43: note: bad data references.
The loop in question looks like this: # i_1 = PHI <i_43(8), 0(7)>; <L3>:; D.31081_39 = this_3->wagi; D.31082_40 = i_1 * 8; D.31083_41 = (double *) D.31082_40; D.31084_42 = D.31081_39 + D.31083_41; *D.31084_42 = 0.0; i_43 = i_1 + 1; if (synapsy_2 > i_43) goto <L16>; else goto <L5>; <L16>:; goto <bb 3> (<L3>); If the invariant expr 'D.31081_39 = this_3->wagi;' was taken out of loop, I think we would have vectorized it. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19922
