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

   1 - // MIR for `id_try` before SimplifyBranchSame
   2 + // MIR for `id_try` after SimplifyBranchSame
   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 => ((_0 as Ok).0: u8);   // in scope 1 at $DIR/simplify-arm.rs:24:9: 24:10
  19       }
  20       scope 2 {
  21           debug err => ((_0 as Err).0: i32); // in scope 2 at $DIR/simplify-arm.rs:24:14: 24:15
  22           scope 3 {
  23               scope 7 (inlined <i32 as From<i32>>::from) { // at $DIR/simplify-arm.rs:24:14: 24:15
  24                   debug t => ((_0 as Err).0: i32); // in scope 7 at $DIR/simplify-arm.rs:24:14: 24:15
  25               }
  26               scope 8 (inlined <Result<u8, i32> as Try>::from_error) { // at $DIR/simplify-arm.rs:24:13: 24:15
  27                   debug v => ((_0 as Err).0: i32); // in scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  28                   let mut _12: i32;        // in scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  29               }
  30           }
  31       }
  32       scope 4 {
  33           debug val => ((_0 as Ok).0: u8); // in scope 4 at $DIR/simplify-arm.rs:24:13: 24:15
  34           scope 5 {
  35           }
  36       }
  37       scope 6 (inlined <Result<u8, i32> as Try>::into_result) { // at $DIR/simplify-arm.rs:24:13: 24:15
  38           debug self => _4;                // in scope 6 at $DIR/simplify-arm.rs:24:13: 24:15
  39       }
  40
  41       bb0: {
  42           StorageLive(_2);                 // scope 0 at $DIR/simplify-arm.rs:24:9: 24:10
  43           StorageLive(_3);                 // scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  44           StorageLive(_4);                 // scope 0 at $DIR/simplify-arm.rs:24:13: 24:14
  45           _4 = _1;                         // scope 0 at $DIR/simplify-arm.rs:24:13: 24:14
  46           _3 = move _4;                    // scope 6 at $DIR/simplify-arm.rs:24:13: 24:15
  47           StorageDead(_4);                 // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  48           _5 = discriminant(_3);           // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  49 -         switchInt(move _5) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  50 +         goto -> bb1;                     // scope 0 at $DIR/simplify-arm.rs:24:14: 24:15
  51       }
  52
  53       bb1: {
  54           _0 = move _3;                    // scope 1 at $DIR/simplify-arm.rs:25:5: 25:10
  55           StorageDead(_3);                 // scope 0 at $DIR/simplify-arm.rs:24:15: 24:16
  56           StorageDead(_2);                 // scope 0 at $DIR/simplify-arm.rs:26:1: 26:2
  57 -         goto -> bb4;                     // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
  58 +         goto -> bb2;                     // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
  59       }
  60
  61       bb2: {
  62 -         unreachable;                     // scope 0 at $DIR/simplify-arm.rs:24:13: 24:15
  63 -     }
  64 -
  65 -     bb3: {
  66 -         _0 = move _3;                    // scope 8 at $DIR/simplify-arm.rs:24:13: 24:15
  67 -         StorageDead(_3);                 // scope 0 at $DIR/simplify-arm.rs:24:15: 24:16
  68 -         StorageDead(_2);                 // scope 0 at $DIR/simplify-arm.rs:26:1: 26:2
  69 -         goto -> bb4;                     // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
  70 -     }
  71 -
  72 -     bb4: {
  73           return;                          // scope 0 at $DIR/simplify-arm.rs:26:2: 26:2
  74       }
  75   }
  76