[Bug rtl-optimization/52170] [4.7 Regression] ICE in trunc_int_for_mode, at explow.c:57 during simplify_plus_minus

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52170

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-08 
11:46:35 UTC ---
There are some missed optimizations in simplify-rtx.c, obvious if you look
at uses of const*_rtx.