1- // MIR for `identity` before ConstProp
2+ // MIR for `identity` after ConstProp
3
4  fn identity(_1: Result<i32, i32>) -> Result<i32, i32> {
5      debug x => _1;                       // in scope 0 at $DIR/separate_const_switch.rs:28:13: 28:14
6      let mut _0: std::result::Result<i32, i32>; // return place in scope 0 at $DIR/separate_const_switch.rs:28:37: 28:53
7      let mut _2: i32;                     // in scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
8      let mut _3: std::ops::ControlFlow<std::result::Result<std::convert::Infallible, i32>, i32>; // in scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
9      let mut _4: std::result::Result<i32, i32>; // in scope 0 at $DIR/separate_const_switch.rs:29:8: 29:9
10      let mut _5: isize;                   // in scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
11      let _6: std::result::Result<std::convert::Infallible, i32>; // in scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
12      let mut _7: !;                       // in scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
13      let mut _8: std::result::Result<std::convert::Infallible, i32>; // in scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
14      let _9: i32;                         // in scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
15      scope 1 {
16          debug residual => _6;            // in scope 1 at $DIR/separate_const_switch.rs:29:9: 29:10
17          scope 2 {
18              scope 8 (inlined <Result<i32, i32> as FromResidual<Result<Infallible, i32>>>::from_residual) { // at $DIR/separate_const_switch.rs:29:8: 29:10
19                  debug residual => _8;    // in scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
20                  let _16: i32;            // in scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
21                  let mut _17: i32;        // in scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
22                  let mut _18: i32;        // in scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
23                  scope 9 {
24                      debug e => _16;      // in scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
25                      scope 10 (inlined <i32 as From<i32>>::from) { // at $DIR/separate_const_switch.rs:29:8: 29:10
26                          debug t => _18;  // in scope 10 at $DIR/separate_const_switch.rs:29:8: 29:10
27                      }
28                  }
29              }
30          }
31      }
32      scope 3 {
33          debug val => _9;                 // in scope 3 at $DIR/separate_const_switch.rs:29:8: 29:10
34          scope 4 {
35          }
36      }
37      scope 5 (inlined <Result<i32, i32> as Try>::branch) { // at $DIR/separate_const_switch.rs:29:8: 29:10
38          debug self => _4;                // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
39          let mut _10: isize;              // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
40          let _11: i32;                    // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
41          let mut _12: i32;                // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
42          let _13: i32;                    // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
43          let mut _14: std::result::Result<std::convert::Infallible, i32>; // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
44          let mut _15: i32;                // in scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
45          scope 6 {
46              debug v => _11;              // in scope 6 at $DIR/separate_const_switch.rs:29:8: 29:10
47          }
48          scope 7 {
49              debug e => _13;              // in scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
50          }
51      }
52
53      bb0: {
54          StorageLive(_2);                 // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
55          StorageLive(_3);                 // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
56          StorageLive(_4);                 // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:9
57          _4 = _1;                         // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:9
58          StorageLive(_10);                // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
59          _10 = discriminant(_4);          // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
60          switchInt(move _10) -> [0_isize: bb5, 1_isize: bb3, otherwise: bb4]; // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
61      }
62
63      bb1: {
64          StorageLive(_9);                 // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
65          _9 = ((_3 as Continue).0: i32);  // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
66          _2 = _9;                         // scope 4 at $DIR/separate_const_switch.rs:29:8: 29:10
67          StorageDead(_9);                 // scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
68          ((_0 as Ok).0: i32) = move _2;   // scope 0 at $DIR/separate_const_switch.rs:29:5: 29:11
69          discriminant(_0) = 0;            // scope 0 at $DIR/separate_const_switch.rs:29:5: 29:11
70          StorageDead(_2);                 // scope 0 at $DIR/separate_const_switch.rs:29:10: 29:11
71          StorageDead(_3);                 // scope 0 at $DIR/separate_const_switch.rs:30:1: 30:2
72          return;                          // scope 0 at $DIR/separate_const_switch.rs:30:2: 30:2
73      }
74
75      bb2: {
76          StorageLive(_6);                 // scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
77          _6 = ((_3 as Break).0: std::result::Result<std::convert::Infallible, i32>); // scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
78          StorageLive(_8);                 // scope 2 at $DIR/separate_const_switch.rs:29:9: 29:10
79          _8 = _6;                         // scope 2 at $DIR/separate_const_switch.rs:29:9: 29:10
80          StorageLive(_16);                // scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
81          _16 = move ((_8 as Err).0: i32); // scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
82          StorageLive(_17);                // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
83          StorageLive(_18);                // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
84          _18 = move _16;                  // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
85          _17 = move _18;                  // scope 10 at $DIR/separate_const_switch.rs:29:8: 29:10
86          StorageDead(_18);                // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
87          ((_0 as Err).0: i32) = move _17; // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
88          discriminant(_0) = 1;            // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
89          StorageDead(_17);                // scope 9 at $DIR/separate_const_switch.rs:29:8: 29:10
90          StorageDead(_16);                // scope 8 at $DIR/separate_const_switch.rs:29:8: 29:10
91          StorageDead(_8);                 // scope 2 at $DIR/separate_const_switch.rs:29:9: 29:10
92          StorageDead(_6);                 // scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
93          StorageDead(_2);                 // scope 0 at $DIR/separate_const_switch.rs:29:10: 29:11
94          StorageDead(_3);                 // scope 0 at $DIR/separate_const_switch.rs:30:1: 30:2
95          return;                          // scope 0 at $DIR/separate_const_switch.rs:30:2: 30:2
96      }
97
98      bb3: {
99          StorageLive(_13);                // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
100          _13 = move ((_4 as Err).0: i32); // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
101          StorageLive(_14);                // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
102          StorageLive(_15);                // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
103          _15 = move _13;                  // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
104          ((_14 as Err).0: i32) = move _15; // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
105          discriminant(_14) = 1;           // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
106          StorageDead(_15);                // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
107          ((_3 as Break).0: std::result::Result<std::convert::Infallible, i32>) = move _14; // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
108          discriminant(_3) = 1;            // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
109          StorageDead(_14);                // scope 7 at $DIR/separate_const_switch.rs:29:8: 29:10
110          StorageDead(_13);                // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
111          StorageDead(_10);                // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
112          StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
113-         _5 = discriminant(_3);           // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
114-         switchInt(move _5) -> [0_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
115+         _5 = const 1_isize;              // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
116+         switchInt(const 1_isize) -> [0_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
117      }
118
119      bb4: {
120          unreachable;                     // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
121      }
122
123      bb5: {
124          StorageLive(_11);                // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
125          _11 = move ((_4 as Ok).0: i32);  // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
126          StorageLive(_12);                // scope 6 at $DIR/separate_const_switch.rs:29:8: 29:10
127          _12 = move _11;                  // scope 6 at $DIR/separate_const_switch.rs:29:8: 29:10
128          ((_3 as Continue).0: i32) = move _12; // scope 6 at $DIR/separate_const_switch.rs:29:8: 29:10
129          discriminant(_3) = 0;            // scope 6 at $DIR/separate_const_switch.rs:29:8: 29:10
130          StorageDead(_12);                // scope 6 at $DIR/separate_const_switch.rs:29:8: 29:10
131          StorageDead(_11);                // scope 5 at $DIR/separate_const_switch.rs:29:8: 29:10
132          StorageDead(_10);                // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
133          StorageDead(_4);                 // scope 0 at $DIR/separate_const_switch.rs:29:9: 29:10
134-         _5 = discriminant(_3);           // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
135-         switchInt(move _5) -> [0_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
136+         _5 = const 0_isize;              // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
137+         switchInt(const 0_isize) -> [0_isize: bb1, otherwise: bb2]; // scope 0 at $DIR/separate_const_switch.rs:29:8: 29:10
138      }
139  }
140
141