bors 9111b8ae97 Auto merge of #83770 - the8472:tra-extend, r=Mark-Simulacrum
Add `TrustedRandomAccess` specialization for `Vec::extend()`

This should do roughly the same as the `TrustedLen` specialization but result in less IR by using `__iterator_get_unchecked`
instead of `Iterator::for_each`

Conflicting specializations are manually prioritized by grouping them under yet another helper trait.
2021-05-26 19:22:31 +00:00
..