src/test/mir-opt/basic_assignment.main.SimplifyCfg-initial.after.mir

   1 // MIR for `main` after SimplifyCfg-initial
   2
   3 | User Type Annotations
   4 | 0: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) } at $DIR/basic_assignment.rs:18:17: 18:33
   5 | 1: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) } at $DIR/basic_assignment.rs:18:17: 18:33
   6 |
   7 fn main() -> () {
   8     let mut _0: ();                      // return place in scope 0 at $DIR/basic_assignment.rs:10:11: 10:11
   9     let _1: bool;                        // in scope 0 at $DIR/basic_assignment.rs:11:9: 11:17
  10     let mut _3: bool;                    // in scope 0 at $DIR/basic_assignment.rs:16:16: 16:24
  11     let mut _6: std::option::Option<std::boxed::Box<u32>>; // in scope 0 at $DIR/basic_assignment.rs:23:14: 23:20
  12     scope 1 {
  13         debug nodrop_x => _1;            // in scope 1 at $DIR/basic_assignment.rs:11:9: 11:17
  14         let _2: bool;                    // in scope 1 at $DIR/basic_assignment.rs:12:9: 12:17
  15         scope 2 {
  16             debug nodrop_y => _2;        // in scope 2 at $DIR/basic_assignment.rs:12:9: 12:17
  17             let _4: std::option::Option<std::boxed::Box<u32>> as UserTypeProjection { base: UserType(0), projs: [] }; // in scope 2 at $DIR/basic_assignment.rs:18:9: 18:15
  18             scope 3 {
  19                 debug drop_x => _4;      // in scope 3 at $DIR/basic_assignment.rs:18:9: 18:15
  20                 let _5: std::option::Option<std::boxed::Box<u32>>; // in scope 3 at $DIR/basic_assignment.rs:19:9: 19:15
  21                 scope 4 {
  22                     debug drop_y => _5;  // in scope 4 at $DIR/basic_assignment.rs:19:9: 19:15
  23                 }
  24             }
  25         }
  26     }
  27
  28     bb0: {
  29         StorageLive(_1);                 // scope 0 at $DIR/basic_assignment.rs:11:9: 11:17
  30         _1 = const false;                // scope 0 at $DIR/basic_assignment.rs:11:20: 11:25
  31         FakeRead(ForLet, _1);            // scope 0 at $DIR/basic_assignment.rs:11:9: 11:17
  32         StorageLive(_2);                 // scope 1 at $DIR/basic_assignment.rs:12:9: 12:17
  33         StorageLive(_3);                 // scope 2 at $DIR/basic_assignment.rs:16:16: 16:24
  34         _3 = _1;                         // scope 2 at $DIR/basic_assignment.rs:16:16: 16:24
  35         _2 = move _3;                    // scope 2 at $DIR/basic_assignment.rs:16:5: 16:24
  36         StorageDead(_3);                 // scope 2 at $DIR/basic_assignment.rs:16:23: 16:24
  37         StorageLive(_4);                 // scope 2 at $DIR/basic_assignment.rs:18:9: 18:15
  38         _4 = Option::<Box<u32>>::None;   // scope 2 at $DIR/basic_assignment.rs:18:36: 18:40
  39         FakeRead(ForLet, _4);            // scope 2 at $DIR/basic_assignment.rs:18:9: 18:15
  40         AscribeUserType(_4, o, UserTypeProjection { base: UserType(1), projs: [] }); // scope 2 at $DIR/basic_assignment.rs:18:17: 18:33
  41         StorageLive(_5);                 // scope 3 at $DIR/basic_assignment.rs:19:9: 19:15
  42         StorageLive(_6);                 // scope 4 at $DIR/basic_assignment.rs:23:14: 23:20
  43         _6 = move _4;                    // scope 4 at $DIR/basic_assignment.rs:23:14: 23:20
  44         replace(_5 <- move _6) -> [return: bb1, unwind: bb5]; // scope 4 at $DIR/basic_assignment.rs:23:5: 23:11
  45     }
  46
  47     bb1: {
  48         drop(_6) -> [return: bb2, unwind: bb6]; // scope 4 at $DIR/basic_assignment.rs:23:19: 23:20
  49     }
  50
  51     bb2: {
  52         StorageDead(_6);                 // scope 4 at $DIR/basic_assignment.rs:23:19: 23:20
  53         _0 = const ();                   // scope 0 at $DIR/basic_assignment.rs:10:11: 24:2
  54         drop(_5) -> [return: bb3, unwind: bb7]; // scope 3 at $DIR/basic_assignment.rs:24:1: 24:2
  55     }
  56
  57     bb3: {
  58         StorageDead(_5);                 // scope 3 at $DIR/basic_assignment.rs:24:1: 24:2
  59         drop(_4) -> [return: bb4, unwind: bb8]; // scope 2 at $DIR/basic_assignment.rs:24:1: 24:2
  60     }
  61
  62     bb4: {
  63         StorageDead(_4);                 // scope 2 at $DIR/basic_assignment.rs:24:1: 24:2
  64         StorageDead(_2);                 // scope 1 at $DIR/basic_assignment.rs:24:1: 24:2
  65         StorageDead(_1);                 // scope 0 at $DIR/basic_assignment.rs:24:1: 24:2
  66         return;                          // scope 0 at $DIR/basic_assignment.rs:24:2: 24:2
  67     }
  68
  69     bb5 (cleanup): {
  70         drop(_6) -> bb6;                 // scope 4 at $DIR/basic_assignment.rs:23:19: 23:20
  71     }
  72
  73     bb6 (cleanup): {
  74         drop(_5) -> bb7;                 // scope 3 at $DIR/basic_assignment.rs:24:1: 24:2
  75     }
  76
  77     bb7 (cleanup): {
  78         drop(_4) -> bb8;                 // scope 2 at $DIR/basic_assignment.rs:24:1: 24:2
  79     }
  80
  81     bb8 (cleanup): {
  82         resume;                          // scope 0 at $DIR/basic_assignment.rs:10:1: 24:2
  83     }
  84 }