rust/tests/mir-opt/pre-codegen/clone_as_copy.clone_as_copy.PreCodegen.after.mir
DianQK c16c22cc9c
Simplify the canonical clone method to copy
The optimized clone method ends up as the following MIR:

```
_2 = copy ((*_1).0: i32);
_3 = copy ((*_1).1: u64);
_4 = copy ((*_1).2: [i8; 3]);
_0 = Foo { a: move _2, b: move _3, c: move _4 };
```

We can transform this to:

```
_0 = copy (*_1);
```
2024-09-14 13:30:35 +08:00

22 lines
484 B
Rust

// MIR for `clone_as_copy` after PreCodegen
fn clone_as_copy(_1: &NestCopy) -> NestCopy {
debug v => _1;
let mut _0: NestCopy;
scope 1 (inlined <NestCopy as Clone>::clone) {
debug self => _1;
let _2: &AllCopy;
scope 2 (inlined <AllCopy as Clone>::clone) {
debug self => _2;
}
}
bb0: {
StorageLive(_2);
_2 = &((*_1).1: AllCopy);
_0 = copy (*_1);
StorageDead(_2);
return;
}
}