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Commit ffeeb20

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Auto merge of rust-lang#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 rust-lang#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 rust-lang#36673 Closes rust-lang#73717 Closes rust-lang#76740

2 parents 6af9846 + dc31777 commit ffeeb20Copy full SHA for ffeeb20

15 files changed

+74

-642

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compiler/rustc_mir/src
- transform
  - copy_prop.rs
  - mod.rs
- util
  - def_use.rs
  - mod.rs
src/test/mir-opt

15 files changed

+74

-642

lines changed

`‎compiler/rustc_mir/src/transform/copy_prop.rs`

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