src/test/mir-opt/simplify_arm.id_try.SimplifyArmIdentity.diff

   1 - // MIR for `id_try` before SimplifyArmIdentity
   2 + // MIR for `id_try` after SimplifyArmIdentity
   3
   4   fn id_try(_1: Result<u8, i32>) -> Result<u8, i32> {
   5       debug r => _1;                       // in scope 0 at $DIR/simplify-arm.rs:23:11: 23:12
   6       let mut _0: std::result::Result<u8, i32>; // return place in scope 0 at $DIR/simplify-arm.rs:23:34: 23:49
   7       let _2: u8;                          // in scope 0 at $DIR/simplify-arm.rs:24:9: 24:10
   8       let mut _3: std::result::Result<u8, i32>; // in scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
   9       let mut _4: std::result::Result<u8, i32>; // in scope 0 at $DIR/simplify-arm.rs:24:13: 24:14
  10       let mut _5: isize;                   // in scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  11       let _6: i32;                         // in scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  12       let mut _7: !;                       // in scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  13       let mut _8: i32;                     // in scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  14       let mut _9: i32;                     // in scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  15       let _10: u8;                         // in scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  16       let mut _11: u8;                     // in scope 0 at $DIR/simplify-arm.rs:25:8: 25:9
  17       scope 1 {
  18 -         debug x => _2;                   // in scope 1 at $DIR/simplify-arm.rs:24:9: 24:10
  19 +         debug x => ((_0 as Ok).0: u8);   // in scope 1 at $DIR/simplify-arm.rs:24:9: 24:10
  20       }
  21       scope 2 {
  22 -         debug err => _6;                 // in scope 2 at $DIR/simplify-arm.rs:24:14: 24:15
  23 +         debug err => ((_0 as Err).0: i32); // in scope 2 at $DIR/simplify-arm.rs:24:14: 24:15
  24           scope 3 {
  25               scope 7 (inlined <i32 as From<i32>>::from) { // at $DIR/simplify-arm.rs:24:14: 24:15
  26 -                 debug t => _9;           // in scope 7 at $DIR/simplify-arm.rs:24:14: 24:15
  27 +                 debug t => ((_0 as Err).0: i32); // in scope 7 at $DIR/simplify-arm.rs:24:14: 24:15
  28               }
  29               scope 8 (inlined <Result<u8, i32> as Try>::from_error) { // at $DIR/simplify-arm.rs:24:13: 24:15
  30 -                 debug v => _8;           // in scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  31 +                 debug v => ((_0 as Err).0: i32); // in scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  32                   let mut _12: i32;        // in scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  33               }
  34           }
  35       }
  36       scope 4 {
  37 -         debug val => _10;                // in scope 4 at $DIR/simplify-arm.rs:24:13: 24:15
  38 +         debug val => ((_0 as Ok).0: u8); // in scope 4 at $DIR/simplify-arm.rs:24:13: 24:15
  39           scope 5 {
  40           }
  41       }
  42       scope 6 (inlined <Result<u8, i32> as Try>::into_result) { // at $DIR/simplify-arm.rs:24:13: 24:15
  43           debug self => _4;                // in scope 6 at $DIR/simplify-arm.rs:24:13: 24:15
  44       }
  45
  46       bb0: {
  47           StorageLive(_2);                 // scope 0 at $DIR/simplify-arm.rs:24:9: 24:10
  48           StorageLive(_3);                 // scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  49           StorageLive(_4);                 // scope 0 at $DIR/simplify-arm.rs:24:13: 24:14
  50           _4 = _1;                         // scope 0 at $DIR/simplify-arm.rs:24:13: 24:14
  51           _3 = move _4;                    // scope 6 at $DIR/simplify-arm.rs:24:13: 24:15
  52           StorageDead(_4);                 // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  53           _5 = discriminant(_3);           // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  54           switchInt(move _5) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  55       }
  56
  57       bb1: {
  58 -         StorageLive(_10);                // scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  59 -         _10 = ((_3 as Ok).0: u8);        // scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  60 -         _2 = _10;                        // scope 5 at $DIR/simplify-arm.rs:24:13: 24:15
  61 -         StorageDead(_10);                // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  62 +         _0 = move _3;                    // scope 1 at $DIR/simplify-arm.rs:25:5: 25:10
  63           StorageDead(_3);                 // scope 0 at $DIR/simplify-arm.rs:24:15: 24:16
  64 -         StorageLive(_11);                // scope 1 at $DIR/simplify-arm.rs:25:8: 25:9
  65 -         _11 = _2;                        // scope 1 at $DIR/simplify-arm.rs:25:8: 25:9
  66 -         ((_0 as Ok).0: u8) = move _11;   // scope 1 at $DIR/simplify-arm.rs:25:5: 25:10
  67 -         discriminant(_0) = 0;            // scope 1 at $DIR/simplify-arm.rs:25:5: 25:10
  68 -         StorageDead(_11);                // scope 1 at $DIR/simplify-arm.rs:25:9: 25:10
  69           StorageDead(_2);                 // scope 0 at $DIR/simplify-arm.rs:26:1: 26:2
  70           goto -> bb4;                     // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
  71       }
  72
  73       bb2: {
  74           unreachable;                     // scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  75       }
  76
  77       bb3: {
  78 -         StorageLive(_6);                 // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  79 -         _6 = ((_3 as Err).0: i32);       // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  80 -         StorageLive(_8);                 // scope 3 at $DIR/simplify-arm.rs:24:14: 24:15
  81 -         StorageLive(_9);                 // scope 3 at $DIR/simplify-arm.rs:24:14: 24:15
  82 -         _9 = _6;                         // scope 3 at $DIR/simplify-arm.rs:24:14: 24:15
  83 -         _8 = move _9;                    // scope 7 at $DIR/simplify-arm.rs:24:14: 24:15
  84 -         StorageDead(_9);                 // scope 3 at $DIR/simplify-arm.rs:24:14: 24:15
  85 -         StorageLive(_12);                // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  86 -         _12 = move _8;                   // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  87 -         ((_0 as Err).0: i32) = move _12; // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  88 -         discriminant(_0) = 1;            // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  89 -         StorageDead(_12);                // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  90 -         StorageDead(_8);                 // scope 3 at $DIR/simplify-arm.rs:24:14: 24:15
  91 -         StorageDead(_6);                 // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  92 +         _0 = move _3;                    // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  93           StorageDead(_3);                 // scope 0 at $DIR/simplify-arm.rs:24:15: 24:16
  94           StorageDead(_2);                 // scope 0 at $DIR/simplify-arm.rs:26:1: 26:2
  95           goto -> bb4;                     // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
  96       }
  97
  98       bb4: {
  99           return;                          // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
 100       }
 101   }
 102