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