------- Comment #5 from jakub at gcc dot gnu dot org 2008-10-20 13:45 ------- Created an attachment (id=16516) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16516&action=view) gcc44-pr36038.patch
My bet is that adding a zero based alternative IV for a pointer is always a bug, the zero based IV will necessarily act as an offset to some other pointer (the original pointer). With this patch the ivopts dump looks much saner, the ivtmp is sizetype and so nothing is cast to and back from a pointer all the time, additionally vrp2 doesn't optimize it out and so the testcase succeeds. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36038
