[Bug middle-end/60546] [4.8/4.9] O2 & asan enable generates wrong insns

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60546

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Meanwhile -fno-tree-dse also "fixes" this but it only prevents mayhem
downstream
(Jakub bisected this to a revision that exposed the issue, r158047).  You have
to disable both tree DSE passes btw, thus it points to a pass running after
DSE2.  It's not -fhoist-adjacent-loads, not RTL PRE nor RTL loop invariant
motion
or the scheduler.