[Bug tree-optimization/105591] [13 Regression] ICE: in tree_to_poly_uint64, at tree.cc:3250 with -O -mavx512f -mno-avx2 since r13-379

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105591

--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
Maybe we should add an canonicalization in match.pd to make sure index is in
range of 0 - 2*N, and the general code need't to do check idx % 2*N.