[Bug tree-optimization/83518] [8/9 Regression] Missing optimization: useless instructions should be dropped

[wilco at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83518

--- Comment #15 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #14)
> Yeah.  It is
> 
>   <bb 2> [local count: 178992762]:
>   arr = *.LC0;
>   arr[0] = 5;
>   vect__56.15_75 = MEM <vector(2) int> [(int *)&arr];
> 
> I'll fix that (well, I'll try).

Right, it's fine with -fno-tree-vectorize on AArch64.