bors ffeeb20398 Auto merge of #77373 - jonas-schievink:rm-rf-copy-prop, r=oli-obk
Remove the old copy propagation pass

This pass was added a long time ago, and has not really seen much improvement since (apart from some great work in https://github.com/rust-lang/rust/pull/76569 that unfortunately ran into preexisting soundness issues). It is slow and unsound, and we now have a destination propagation pass that performs a related optimization and could be extended.

Closes https://github.com/rust-lang/rust/issues/36673
Closes https://github.com/rust-lang/rust/issues/73717
Closes https://github.com/rust-lang/rust/issues/76740
2020-10-17 16:57:21 +00:00
..