LLVM is pretty neat: if you give it this:

```rust
pub fn sumf32(data1: &mut [f32; 8], data2: &[f32; 8]) {
    for idx in 0..8 {
        data1[idx] = data1[idx] + data2[idx];
    }
}

```

and tell if you have an M55 or an M85, you get:

```text
00000000 <samplelib::sumf32>:
   0:   ed90 1f00       ldc     15, cr1, [r0]
   4:   ed91 3f00       ldc     15, cr3, [r1]
   8:   ef00 0d42       vadd.f32        q0, q0, q1
   c:   ed90 3f04       ldc     15, cr3, [r0, #16]
  10:   ed80 1f00       stc     15, cr1, [r0]
  14:   ed91 1f04       ldc     15, cr1, [r1, #16]
  18:   ef02 0d40       vadd.f32        q0, q1, q0
  1c:   ed80 1f04       stc     15, cr1, [r0, #16]
  20:   4770            bx      lr
```