[Bug tree-optimization/71170] [7 Regression] ICE in rewrite_expr_tree, at tree-ssa-reassoc.c:3898

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71170

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Also seen on a tester:
https://gcc.gnu.org/ml/gcc-regression/2016-05/msg00248.html