Multidimensional arrays don't generate correct code

[DontBelieveMe]

Given this source

void a()
{
    int a[10][10];
}

the following (incorrect) IR gets generated

function a(): void {
.0:
        stack_alloc [i32 x 10], %0:ptr
        ret
}

it should allocate 100 elements instead

[DontBelieveMe]

Testcase is f2007-multidimensonal-arrays

[DontBelieveMe]

Given the recently added ArrayType, this has solved itself.