src/test/mir-opt/unreachable_asm_2.main.UnreachablePropagation.diff

   1 - // MIR for `main` before UnreachablePropagation
   2 + // MIR for `main` after UnreachablePropagation
   3
   4   fn main() -> () {
   5       let mut _0: ();                      // return place in scope 0 at $DIR/unreachable_asm_2.rs:10:11: 10:11
   6       let mut _1: std::option::Option<Empty>; // in scope 0 at $DIR/unreachable_asm_2.rs:11:23: 11:30
   7       let mut _2: isize;                   // in scope 0 at $DIR/unreachable_asm_2.rs:11:12: 11:20
   8       let _3: Empty;                       // in scope 0 at $DIR/unreachable_asm_2.rs:11:17: 11:19
   9       let _5: ();                          // in scope 0 at $DIR/unreachable_asm_2.rs:14:9: 22:10
  10       let mut _6: bool;                    // in scope 0 at $DIR/unreachable_asm_2.rs:14:12: 14:16
  11       let _7: ();                          // in scope 0 at $DIR/unreachable_asm_2.rs:16:13: 16:41
  12       let _8: ();                          // in scope 0 at $DIR/unreachable_asm_2.rs:20:13: 20:41
  13       let mut _9: !;                       // in scope 0 at $DIR/unreachable_asm_2.rs:24:9: 24:21
  14       scope 1 {
  15           debug _x => _3;                  // in scope 1 at $DIR/unreachable_asm_2.rs:11:17: 11:19
  16           let mut _4: i32;                 // in scope 1 at $DIR/unreachable_asm_2.rs:12:13: 12:19
  17           scope 2 {
  18               debug _y => _4;              // in scope 2 at $DIR/unreachable_asm_2.rs:12:13: 12:19
  19               scope 3 {
  20               }
  21               scope 4 {
  22               }
  23           }
  24       }
  25
  26       bb0: {
  27           StorageLive(_1);                 // scope 0 at $DIR/unreachable_asm_2.rs:11:23: 11:30
  28           _1 = const empty() -> bb1;       // scope 0 at $DIR/unreachable_asm_2.rs:11:23: 11:30
  29                                            // ty::Const
  30                                            // + ty: fn() -> std::option::Option<Empty> {empty}
  31                                            // + val: Value(Scalar(<ZST>))
  32                                            // mir::Constant
  33                                            // + span: $DIR/unreachable_asm_2.rs:11:23: 11:28
  34                                            // + literal: Const { ty: fn() -> std::option::Option<Empty> {empty}, val: Value(Scalar(<ZST>)) }
  35       }
  36
  37       bb1: {
  38           _2 = discriminant(_1);           // scope 0 at $DIR/unreachable_asm_2.rs:11:12: 11:20
  39           switchInt(move _2) -> [1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/unreachable_asm_2.rs:11:12: 11:20
  40       }
  41
  42       bb2: {
  43           _0 = const ();                   // scope 0 at $DIR/unreachable_asm_2.rs:11:5: 25:6
  44                                            // ty::Const
  45                                            // + ty: ()
  46                                            // + val: Value(Scalar(<ZST>))
  47                                            // mir::Constant
  48                                            // + span: $DIR/unreachable_asm_2.rs:11:5: 25:6
  49                                            // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  50           StorageDead(_1);                 // scope 0 at $DIR/unreachable_asm_2.rs:26:1: 26:2
  51           return;                          // scope 0 at $DIR/unreachable_asm_2.rs:26:2: 26:2
  52       }
  53
  54       bb3: {
  55           StorageLive(_3);                 // scope 0 at $DIR/unreachable_asm_2.rs:11:17: 11:19
  56           _3 = move ((_1 as Some).0: Empty); // scope 0 at $DIR/unreachable_asm_2.rs:11:17: 11:19
  57           StorageLive(_4);                 // scope 1 at $DIR/unreachable_asm_2.rs:12:13: 12:19
  58           StorageLive(_5);                 // scope 2 at $DIR/unreachable_asm_2.rs:14:9: 22:10
  59           StorageLive(_6);                 // scope 2 at $DIR/unreachable_asm_2.rs:14:12: 14:16
  60           _6 = const true;                 // scope 2 at $DIR/unreachable_asm_2.rs:14:12: 14:16
  61           switchInt(_6) -> [false: bb4, otherwise: bb5]; // scope 2 at $DIR/unreachable_asm_2.rs:14:9: 22:10
  62       }
  63
  64       bb4: {
  65           StorageLive(_8);                 // scope 2 at $DIR/unreachable_asm_2.rs:20:13: 20:41
  66           llvm_asm!(LlvmInlineAsmInner { asm: "NOP", asm_str_style: Cooked, outputs: [], inputs: [], clobbers: [], volatile: true, alignstack: false, dialect: Att } : [] : []); // scope 4 at $DIR/unreachable_asm_2.rs:20:22: 20:39
  67           _8 = const ();                   // scope 4 at $DIR/unreachable_asm_2.rs:20:13: 20:41
  68                                            // ty::Const
  69                                            // + ty: ()
  70                                            // + val: Value(Scalar(<ZST>))
  71                                            // mir::Constant
  72                                            // + span: $DIR/unreachable_asm_2.rs:20:13: 20:41
  73                                            // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  74           StorageDead(_8);                 // scope 2 at $DIR/unreachable_asm_2.rs:20:40: 20:41
  75           _4 = const 42_i32;               // scope 2 at $DIR/unreachable_asm_2.rs:21:13: 21:20
  76           _5 = const ();                   // scope 2 at $DIR/unreachable_asm_2.rs:18:16: 22:10
  77                                            // ty::Const
  78                                            // + ty: ()
  79                                            // + val: Value(Scalar(<ZST>))
  80                                            // mir::Constant
  81                                            // + span: $DIR/unreachable_asm_2.rs:18:16: 22:10
  82                                            // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  83 -         goto -> bb6;                     // scope 2 at $DIR/unreachable_asm_2.rs:14:9: 22:10
  84 +         unreachable;                     // scope 2 at $DIR/unreachable_asm_2.rs:14:9: 22:10
  85       }
  86
  87       bb5: {
  88           StorageLive(_7);                 // scope 2 at $DIR/unreachable_asm_2.rs:16:13: 16:41
  89           llvm_asm!(LlvmInlineAsmInner { asm: "NOP", asm_str_style: Cooked, outputs: [], inputs: [], clobbers: [], volatile: true, alignstack: false, dialect: Att } : [] : []); // scope 3 at $DIR/unreachable_asm_2.rs:16:22: 16:39
  90           _7 = const ();                   // scope 3 at $DIR/unreachable_asm_2.rs:16:13: 16:41
  91                                            // ty::Const
  92                                            // + ty: ()
  93                                            // + val: Value(Scalar(<ZST>))
  94                                            // mir::Constant
  95                                            // + span: $DIR/unreachable_asm_2.rs:16:13: 16:41
  96                                            // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  97           StorageDead(_7);                 // scope 2 at $DIR/unreachable_asm_2.rs:16:40: 16:41
  98           _4 = const 21_i32;               // scope 2 at $DIR/unreachable_asm_2.rs:17:13: 17:20
  99           _5 = const ();                   // scope 2 at $DIR/unreachable_asm_2.rs:14:17: 18:10
 100                                            // ty::Const
 101                                            // + ty: ()
 102                                            // + val: Value(Scalar(<ZST>))
 103                                            // mir::Constant
 104                                            // + span: $DIR/unreachable_asm_2.rs:14:17: 18:10
 105                                            // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
 106 -         goto -> bb6;                     // scope 2 at $DIR/unreachable_asm_2.rs:14:9: 22:10
 107 -     }
 108 -
 109 -     bb6: {
 110 -         StorageDead(_6);                 // scope 2 at $DIR/unreachable_asm_2.rs:22:9: 22:10
 111 -         StorageDead(_5);                 // scope 2 at $DIR/unreachable_asm_2.rs:22:9: 22:10
 112 -         StorageLive(_9);                 // scope 2 at $DIR/unreachable_asm_2.rs:24:9: 24:21
 113 -         unreachable;                     // scope 2 at $DIR/unreachable_asm_2.rs:24:15: 24:17
 114 +         unreachable;                     // scope 2 at $DIR/unreachable_asm_2.rs:14:9: 22:10
 115       }
 116   }
 117