https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66142
--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> --- Created attachment 35541 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35541&action=edit test-case to reproduce Must be compiled with -Ofast -fopenmp -march=core-avx2 options.