119 lines
2.8 KiB
Rust
119 lines
2.8 KiB
Rust
// MIR for `test` after ElaborateDrops
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fn test() -> Option<Vec<u32>> {
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let mut _0: std::option::Option<std::vec::Vec<u32>>;
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let mut _1: std::vec::Vec<u32>;
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let mut _2: std::boxed::Box<std::mem::MaybeUninit<[u32; 1]>>;
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let mut _3: std::boxed::Box<std::mem::MaybeUninit<[u32; 1]>>;
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let mut _4: u32;
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let mut _5: std::ops::ControlFlow<std::option::Option<std::convert::Infallible>, u32>;
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let mut _6: std::option::Option<u32>;
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let mut _7: isize;
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let _8: std::option::Option<std::convert::Infallible>;
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let mut _9: !;
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let mut _10: std::option::Option<std::convert::Infallible>;
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let _11: u32;
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scope 1 {
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debug residual => _8;
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scope 2 {
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}
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}
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scope 3 {
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debug val => _11;
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scope 4 {
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}
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}
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bb0: {
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StorageLive(_1);
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StorageLive(_2);
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StorageLive(_3);
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_3 = Box::<[u32; 1]>::new_uninit() -> [return: bb1, unwind: bb14];
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}
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bb1: {
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StorageLive(_4);
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StorageLive(_5);
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StorageLive(_6);
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_6 = Option::<u32>::None;
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_5 = <Option<u32> as Try>::branch(move _6) -> [return: bb2, unwind: bb13];
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}
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bb2: {
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StorageDead(_6);
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PlaceMention(_5);
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_7 = discriminant(_5);
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switchInt(move _7) -> [0: bb4, 1: bb5, otherwise: bb3];
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}
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bb3: {
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unreachable;
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}
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bb4: {
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StorageLive(_11);
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_11 = copy ((_5 as Continue).0: u32);
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_4 = copy _11;
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StorageDead(_11);
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((((*_3).1: std::mem::ManuallyDrop<[u32; 1]>).0: std::mem::MaybeDangling<[u32; 1]>).0: [u32; 1]) = [move _4];
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StorageDead(_4);
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_2 = move _3;
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goto -> bb7;
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}
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bb5: {
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StorageLive(_8);
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_8 = copy ((_5 as Break).0: std::option::Option<std::convert::Infallible>);
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StorageLive(_10);
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_10 = copy _8;
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_0 = <Option<Vec<u32>> as FromResidual<Option<Infallible>>>::from_residual(move _10) -> [return: bb6, unwind: bb13];
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}
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bb6: {
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StorageDead(_10);
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StorageDead(_8);
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StorageDead(_4);
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drop(_3) -> [return: bb10, unwind: bb14];
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}
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bb7: {
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StorageDead(_3);
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_1 = std::boxed::box_assume_init_into_vec_unsafe::<u32, 1>(move _2) -> [return: bb8, unwind: bb12];
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}
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bb8: {
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StorageDead(_2);
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_0 = Option::<Vec<u32>>::Some(move _1);
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goto -> bb9;
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}
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bb9: {
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StorageDead(_1);
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StorageDead(_5);
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goto -> bb11;
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}
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bb10: {
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StorageDead(_3);
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StorageDead(_2);
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StorageDead(_1);
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StorageDead(_5);
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goto -> bb11;
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}
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bb11: {
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return;
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}
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bb12 (cleanup): {
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goto -> bb14;
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}
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bb13 (cleanup): {
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drop(_3) -> [return: bb14, unwind terminate(cleanup)];
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}
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bb14 (cleanup): {
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resume;
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}
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}
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