[Bug target/83735] [8 Regression] generating unaligned store to stack with vmovaps

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83735

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
In main (), various RTL passes generate

(insn/f 461 460 462 2 (set (mem:DI (pre_dec:DI (reg/f:DI 7 sp)) [0  S8 A8]) 
        (reg:DI 3 bx)) "x.i":17 61 {*pushdi2_rex64}
     (expr_list:REG_DEAD (reg:DI 3 bx)
        (nil)))

It destroys stack alignment. It doesn't happen in non-main functions.