------- Additional Comments From dorit at il dot ibm dot com 2005-05-25 07:28 ------- > Actually, this is a bug in the vectorizer code to update PHIs in duplicate > loops. forwprop AFAICT is just exposing the latent vectorizer bug. > >From what I've been able to determine so far, the vectorizer code to > update PHIs doesn't properly handle the case where a PHI is dead. It > is likely someone with more experience in the vectorizer code is going > to need to fix this.
I'll take a look -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21734
