mirror of https://github.com/rust-lang/rust.git
130 lines
3.5 KiB
Diff
130 lines
3.5 KiB
Diff
- // MIR for `identity` before JumpThreading
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+ // MIR for `identity` after JumpThreading
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fn identity(_1: Result<i32, i32>) -> Result<i32, i32> {
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debug x => _1;
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let mut _0: std::result::Result<i32, i32>;
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let mut _2: i32;
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let mut _3: std::ops::ControlFlow<std::result::Result<std::convert::Infallible, i32>, i32>;
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let mut _4: std::result::Result<i32, i32>;
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let mut _5: isize;
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let _6: std::result::Result<std::convert::Infallible, i32>;
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let mut _7: !;
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let mut _8: std::result::Result<std::convert::Infallible, i32>;
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let _9: i32;
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scope 1 {
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debug residual => _6;
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scope 2 {
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scope 8 (inlined #[track_caller] <Result<i32, i32> as FromResidual<Result<Infallible, i32>>>::from_residual) {
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let _14: i32;
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let mut _15: i32;
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scope 9 {
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scope 10 (inlined <i32 as From<i32>>::from) {
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}
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}
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}
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}
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}
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scope 3 {
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debug val => _9;
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scope 4 {
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}
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}
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scope 5 (inlined <Result<i32, i32> as Try>::branch) {
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let mut _10: isize;
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let _11: i32;
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let _12: i32;
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let mut _13: std::result::Result<std::convert::Infallible, i32>;
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scope 6 {
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}
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scope 7 {
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}
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}
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bb0: {
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StorageLive(_2);
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StorageLive(_3);
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StorageLive(_4);
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_4 = copy _1;
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StorageLive(_10);
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StorageLive(_11);
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StorageLive(_12);
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_10 = discriminant(_4);
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switchInt(move _10) -> [0: bb7, 1: bb6, otherwise: bb1];
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}
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bb1: {
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unreachable;
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}
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bb2: {
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StorageLive(_9);
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_9 = copy ((_3 as Continue).0: i32);
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_2 = copy _9;
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StorageDead(_9);
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_0 = Result::<i32, i32>::Ok(move _2);
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StorageDead(_2);
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StorageDead(_3);
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goto -> bb4;
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}
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bb3: {
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StorageLive(_6);
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_6 = copy ((_3 as Break).0: std::result::Result<std::convert::Infallible, i32>);
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StorageLive(_8);
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_8 = copy _6;
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StorageLive(_14);
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_14 = move ((_8 as Err).0: i32);
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StorageLive(_15);
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_15 = move _14;
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_0 = Result::<i32, i32>::Err(move _15);
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StorageDead(_15);
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StorageDead(_14);
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StorageDead(_8);
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StorageDead(_6);
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StorageDead(_2);
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StorageDead(_3);
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goto -> bb4;
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}
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bb4: {
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return;
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}
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bb5: {
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StorageDead(_12);
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StorageDead(_11);
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StorageDead(_10);
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StorageDead(_4);
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_5 = discriminant(_3);
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- switchInt(move _5) -> [0: bb2, 1: bb3, otherwise: bb1];
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+ goto -> bb2;
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}
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bb6: {
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_12 = move ((_4 as Err).0: i32);
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StorageLive(_13);
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_13 = Result::<Infallible, i32>::Err(copy _12);
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_3 = ControlFlow::<Result<Infallible, i32>, i32>::Break(move _13);
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StorageDead(_13);
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- goto -> bb5;
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+ goto -> bb8;
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}
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bb7: {
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_11 = move ((_4 as Ok).0: i32);
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_3 = ControlFlow::<Result<Infallible, i32>, i32>::Continue(copy _11);
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goto -> bb5;
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+ }
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+
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+ bb8: {
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+ StorageDead(_12);
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+ StorageDead(_11);
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+ StorageDead(_10);
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+ StorageDead(_4);
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+ _5 = discriminant(_3);
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+ goto -> bb3;
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}
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}
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