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

[dominiq at lps dot ens.fr]

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

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-10-30 
11:24:57 UTC ---
> It would be nice if somebody could reduce this to a more managable testcase.

I have posted a reduced test in
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34265#c34 (pr34265).