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add working code example

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Chris Midgley 2021-07-21 10:29:20 +01:00
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commit e09d782609
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10
compiler/rustc_error_codes/src/error_codes/E0722.md
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@ -19,6 +19,16 @@ The `#[optimize]` attribute should be used as follows:
- `#[optimize(speed)]` -- instructs the optimization pipeline to generate code - `#[optimize(speed)]` -- instructs the optimization pipeline to generate code
that's faster rather than smaller that's faster rather than smaller
For example:
```
#![feature(optimize_attribute)]
#[optimize(size)]
pub fn something() {}
fn main() {}
```
See [RFC 2412] for more details. See [RFC 2412] for more details.
[RFC 2412]: https://rust-lang.github.io/rfcs/2412-optimize-attr.html [RFC 2412]: https://rust-lang.github.io/rfcs/2412-optimize-attr.html