[Bug rtl-optimization/50904] Induct benchmark of polyhedron slows down when -fno-protect-parens is enabled by -Ofast.

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50904

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-30 09:40:38 UTC ---
I don't see why RTL invariant motion should move the one variant but not
the other.  Of course this also shows that we should, after loop unrolling
on the tree level, also perform loop invariant motion again ...