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

[jakub at gcc dot gnu.org via Gcc-bugs]

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We certainly can't reject the __builtin_shuffle, it is valid.
"The elements of the input vectors are numbered in memory ordering of
VEC0 beginning at 0 and VEC1 beginning at N.  The elements of MASK are
considered modulo N in the single-operand case and modulo 2*N in the
two-operand case."