Dandandan commented on issue #15631:
URL: https://github.com/apache/datafusion/issues/15631#issuecomment-2786711757
Would be good to compare it with a boolean version of this as well, like
this, to see if it vectorizes better:
```
pub fn all_zero(&self) -> bool {
// platform specific
const LANES: usize = 8;
let mut chunks = self.chunks.chunks_exact(LANES);
let mut all_false = true;
chunks.borrow_mut().for_each(|chunk| {
let chunk: [u64; LANES] = chunk.try_into().unwrap();
for i in 0..LANES {
all_false &= chunk[i] == 0;
}
});
let remainder = chunks.remainder();
for chunk in remainder {
all_false &= *chunk == 0;
}
all_false
}
```
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