`+` is checked for overflow by default (can be overridden with compiler flags), and `&+` is overflowing addition and does auto-vectorize equivalently to C++.
I'd be quite interested in seeing a benchmark comparing checked and unchecked addition that doesn't get auto-vectorized to understand the performance in practice for non-numerical computing.
I'd be quite interested in seeing a benchmark comparing checked and unchecked addition that doesn't get auto-vectorized to understand the performance in practice for non-numerical computing.