[Bug tree-optimization/49203] missed-optimization: useless expressions not moved out of loop

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49203

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-28 12:57:19 UTC ---
(In reply to comment #1)
> Looks like LIM is only able to hoist invariants rather than push down
> invariants.  It can push down invariant stores though.

Indeed.  code-sinking (in tree-ssa-sink.c) would be able to fix this
but it is run before loop store motion.