https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105923
--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> --- > .L3: > subl %r13d, %r12d > cmpl $1, %r12d > je .L6 > salq $4, %r13 > vmovapd a(%r13), %xmm0 > call _ZGVbN2v_foo > vmovapd %xmm0, b(%r13) hmm, xmm version should be abandoned since it's just 1 complex double.