Re: [PATCH] Mark back edges in insert_backedge_copies

2011-11-18 Thread Richard Guenther
On Thu, Nov 17, 2011 at 10:55 PM, William J. Schmidt wrote: > Greetings, > > While investigating http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39976, I > found that tree-outof-ssa.c:insert_backedge_copies tests whether edges > are back edges, but the back edges haven't been marked to facilitate > th

[PATCH] Mark back edges in insert_backedge_copies

2011-11-17 Thread William J. Schmidt
Greetings, While investigating http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39976, I found that tree-outof-ssa.c:insert_backedge_copies tests whether edges are back edges, but the back edges haven't been marked to facilitate this. (This was the reason the failures started happening in r149206, alt