diff options
Diffstat (limited to '')
| -rw-r--r-- | src/doc/rustc-dev-guide/src/mir/visitor.md | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/src/doc/rustc-dev-guide/src/mir/visitor.md b/src/doc/rustc-dev-guide/src/mir/visitor.md index 5c21d5304..505b700b3 100644 --- a/src/doc/rustc-dev-guide/src/mir/visitor.md +++ b/src/doc/rustc-dev-guide/src/mir/visitor.md @@ -37,12 +37,10 @@ code that will execute whenever a `foo` is found. If you want to recursively walk the contents of the `foo`, you then invoke the `super_foo` method. (NB. You never want to override `super_foo`.) -A very simple example of a visitor can be found in [`NoLandingPads`]. -That visitor doesn't even require any state: it just visits all -terminators and removes their `unwind` successors. +A very simple example of a visitor can be found in [`LocalUseCounter`]. +By implementing `visit_local` method, this visitor counts how many times each local is used. -<!--- TODO: Change NoLandingPads. [#1232](https://github.com/rust-lang/rustc-dev-guide/issues/1232) --> -[`NoLandingPads`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_transform/no_landing_pads/struct.NoLandingPads.html +[`LocalUseCounter`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_transform/simplify_try/struct.LocalUseCounter.html ## Traversal |