https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78731
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 40285
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40285&action=edit
patch
Ah, finally a testcase! (I have one I can't disclose and thus didn't post the
patch without a good testcase for Jeff to look at)
The issue is that jump threading across backedges may, when following the SSA
value chain, pick up values from a previous iteration.
