[Bug tree-optimization/71506] [5 Regression] ICE with libvpx with -floop-interchange: isl_constraint.c:627: expecting integer value

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71506

--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #2)
> Current trunk, as well as GCC 6.1.1 works fine.

This is a problem in loop-interchange.c, which was removed in the 6 release
(https://gcc.gnu.org/ml/gcc-patches/2015-08/msg01651.html).