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Move example code block to paragraph referencing it 

Noticed by Mario Carneiro.
This commit is contained in:
Noah Lev 2024-05-29 11:40:50 -07:00 committed by nora
parent cb22326fae
commit 23bf5eca80
1 changed files with 6 additions and 6 deletions
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src/mir/index.md
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@ -62,12 +62,6 @@ show you the MIR for your program. Try putting this program into play
button on the top: button on the top:
[sample-play]: https://play.rust-lang.org/?gist=30074856e62e74e91f06abd19bd72ece&version=stable [sample-play]: https://play.rust-lang.org/?gist=30074856e62e74e91f06abd19bd72ece&version=stable
MIR shown by above link is optimized.
Some statements like `StorageLive` are removed in optimization.
This happens because the compiler notices the value is never accessed in the code.
We can use `rustc [filename].rs -Z mir-opt-level=0 --emit mir` to view unoptimized MIR.
This requires the nightly toolchain.
```rust ```rust
fn main() { fn main() {
@ -88,6 +82,12 @@ fn main() -> () {
``` ```
This is the MIR format for the `main` function. This is the MIR format for the `main` function.
MIR shown by above link is optimized.
Some statements like `StorageLive` are removed in optimization.
This happens because the compiler notices the value is never accessed in the code.
We can use `rustc [filename].rs -Z mir-opt-level=0 --emit mir` to view unoptimized MIR.
This requires the nightly toolchain.
**Variable declarations.** If we drill in a bit, we'll see it begins **Variable declarations.** If we drill in a bit, we'll see it begins
with a bunch of variable declarations. They look like this: with a bunch of variable declarations. They look like this: