src/test/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals.diff

   1 - // MIR for `foo` before SimplifyLocals
   2 + // MIR for `foo` after SimplifyLocals
   3
   4   fn foo() -> () {
   5       let mut _0: ();                      // return place in scope 0 at $DIR/simplify-locals-fixedpoint.rs:3:13: 3:13
   6       let mut _1: (std::option::Option<u8>, std::option::Option<T>); // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
   7       let mut _2: std::option::Option<u8>; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
   8       let mut _3: std::option::Option<T>;  // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
   9       let mut _4: isize;                   // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
  10       let mut _5: isize;                   // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
  11       let _6: u8;                          // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
  12 -     let mut _7: bool;                    // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
  13 -     let mut _8: u8;                      // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
  14       scope 1 {
  15           debug a => _6;                   // in scope 1 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
  16       }
  17
  18       bb0: {
  19           StorageLive(_1);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
  20           StorageLive(_2);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
  21           discriminant(_2) = 0;            // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
  22           StorageLive(_3);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
  23           discriminant(_3) = 0;            // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
  24           (_1.0: std::option::Option<u8>) = move _2; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
  25           (_1.1: std::option::Option<T>) = move _3; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
  26           StorageDead(_3);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
  27           StorageDead(_2);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
  28           _5 = discriminant((_1.0: std::option::Option<u8>)); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:12: 4:27
  29           switchInt(move _5) -> [1_isize: bb1, otherwise: bb3]; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:12: 4:27
  30       }
  31
  32       bb1: {
  33           _4 = discriminant((_1.1: std::option::Option<T>)); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:12: 4:27
  34           switchInt(move _4) -> [0_isize: bb2, otherwise: bb3]; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:12: 4:27
  35       }
  36
  37       bb2: {
  38           StorageLive(_6);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
  39           _6 = (((_1.0: std::option::Option<u8>) as Some).0: u8); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
  40 -         StorageLive(_7);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
  41 -         StorageLive(_8);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
  42 -         _8 = _6;                         // scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
  43 -         _7 = Gt(move _8, const 42_u8);   // scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
  44 -         StorageDead(_8);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:19: 5:20
  45 -         StorageDead(_7);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:7:9: 7:10
  46           goto -> bb3;                     // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
  47       }
  48
  49       bb3: {
  50           StorageDead(_6);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
  51           drop(_1) -> bb4;                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
  52       }
  53
  54       bb4: {
  55           StorageDead(_1);                 // scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
  56           return;                          // scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:2: 9:2
  57       }
  58   }
  59