src/test/mir-opt/storage_ranges/rustc.main.nll.0.mir

   1 // MIR for `main` 0 nll
   2
   3 | Free Region Mapping
   4 | '_#0r | Global | ['_#0r, '_#1r]
   5 | '_#1r | Local | ['_#1r]
   6 |
   7 | Inferred Region Values
   8 | '_#0r | U0 | {bb0[0..=22], '_#0r, '_#1r}
   9 | '_#1r | U0 | {bb0[0..=22], '_#1r}
  10 | '_#2r | U0 | {}
  11 | '_#3r | U0 | {bb0[10..=11]}
  12 | '_#4r | U0 | {bb0[11]}
  13 |
  14 | Inference Constraints
  15 | '_#0r live at {bb0[0..=22]}
  16 | '_#1r live at {bb0[0..=22]}
  17 | '_#3r live at {bb0[10]}
  18 | '_#4r live at {bb0[11]}
  19 | '_#3r: '_#4r due to Assignment at Single(bb0[10])
  20 |
  21 fn main() -> () {
  22     let mut _0: ();                      // return place in scope 0 at $DIR/storage_ranges.rs:3:11: 3:11
  23     let _1: i32;                         // in scope 0 at $DIR/storage_ranges.rs:4:9: 4:10
  24     let _2: ();                          // in scope 0 at $DIR/storage_ranges.rs:5:5: 7:6
  25     let _4: std::option::Option<i32>;    // in scope 0 at $DIR/storage_ranges.rs:6:18: 6:25
  26     let mut _5: i32;                     // in scope 0 at $DIR/storage_ranges.rs:6:23: 6:24
  27     scope 1 {
  28         debug a => _1;                   // in scope 1 at $DIR/storage_ranges.rs:4:9: 4:10
  29         let _3: &std::option::Option<i32>; // in scope 1 at $DIR/storage_ranges.rs:6:13: 6:14
  30         let _6: i32;                     // in scope 1 at $DIR/storage_ranges.rs:8:9: 8:10
  31         scope 2 {
  32             debug b => _3;               // in scope 2 at $DIR/storage_ranges.rs:6:13: 6:14
  33         }
  34         scope 3 {
  35             debug c => _6;               // in scope 3 at $DIR/storage_ranges.rs:8:9: 8:10
  36         }
  37     }
  38
  39     bb0: {
  40         StorageLive(_1);                 // scope 0 at $DIR/storage_ranges.rs:4:9: 4:10
  41         _1 = const 0i32;                 // scope 0 at $DIR/storage_ranges.rs:4:13: 4:14
  42                                          // ty::Const
  43                                          // + ty: i32
  44                                          // + val: Value(Scalar(0x00000000))
  45                                          // mir::Constant
  46                                          // + span: $DIR/storage_ranges.rs:4:13: 4:14
  47                                          // + literal: Const { ty: i32, val: Value(Scalar(0x00000000)) }
  48         FakeRead(ForLet, _1);            // scope 0 at $DIR/storage_ranges.rs:4:9: 4:10
  49         StorageLive(_2);                 // scope 1 at $DIR/storage_ranges.rs:5:5: 7:6
  50         StorageLive(_3);                 // scope 1 at $DIR/storage_ranges.rs:6:13: 6:14
  51         StorageLive(_4);                 // scope 1 at $DIR/storage_ranges.rs:6:18: 6:25
  52         StorageLive(_5);                 // scope 1 at $DIR/storage_ranges.rs:6:23: 6:24
  53         _5 = _1;                         // scope 1 at $DIR/storage_ranges.rs:6:23: 6:24
  54         _4 = std::option::Option::<i32>::Some(move _5); // scope 1 at $DIR/storage_ranges.rs:6:18: 6:25
  55         StorageDead(_5);                 // scope 1 at $DIR/storage_ranges.rs:6:24: 6:25
  56         _3 = &_4;                        // scope 1 at $DIR/storage_ranges.rs:6:17: 6:25
  57         FakeRead(ForLet, _3);            // scope 1 at $DIR/storage_ranges.rs:6:13: 6:14
  58         _2 = const ();                   // scope 1 at $DIR/storage_ranges.rs:5:5: 7:6
  59                                          // ty::Const
  60                                          // + ty: ()
  61                                          // + val: Value(Scalar(<ZST>))
  62                                          // mir::Constant
  63                                          // + span: $DIR/storage_ranges.rs:5:5: 7:6
  64                                          // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  65         StorageDead(_4);                 // scope 1 at $DIR/storage_ranges.rs:7:5: 7:6
  66         StorageDead(_3);                 // scope 1 at $DIR/storage_ranges.rs:7:5: 7:6
  67         StorageDead(_2);                 // scope 1 at $DIR/storage_ranges.rs:7:5: 7:6
  68         StorageLive(_6);                 // scope 1 at $DIR/storage_ranges.rs:8:9: 8:10
  69         _6 = const 1i32;                 // scope 1 at $DIR/storage_ranges.rs:8:13: 8:14
  70                                          // ty::Const
  71                                          // + ty: i32
  72                                          // + val: Value(Scalar(0x00000001))
  73                                          // mir::Constant
  74                                          // + span: $DIR/storage_ranges.rs:8:13: 8:14
  75                                          // + literal: Const { ty: i32, val: Value(Scalar(0x00000001)) }
  76         FakeRead(ForLet, _6);            // scope 1 at $DIR/storage_ranges.rs:8:9: 8:10
  77         _0 = const ();                   // scope 0 at $DIR/storage_ranges.rs:3:11: 9:2
  78                                          // ty::Const
  79                                          // + ty: ()
  80                                          // + val: Value(Scalar(<ZST>))
  81                                          // mir::Constant
  82                                          // + span: $DIR/storage_ranges.rs:3:11: 9:2
  83                                          // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  84         StorageDead(_6);                 // scope 1 at $DIR/storage_ranges.rs:9:1: 9:2
  85         StorageDead(_1);                 // scope 0 at $DIR/storage_ranges.rs:9:1: 9:2
  86         return;                          // scope 0 at $DIR/storage_ranges.rs:9:2: 9:2
  87     }
  88 }