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

   1 - // MIR for `id` before SimplifyArmIdentity
   2 + // MIR for `id` after SimplifyArmIdentity
   3
   4   fn id(_1: std::option::Option<u8>) -> std::option::Option<u8> {
   5       debug o => _1;                       // in scope 0 at $DIR/simplify-arm.rs:9:7: 9:8
   6       let mut _0: std::option::Option<u8>; // return place in scope 0 at $DIR/simplify-arm.rs:9:25: 9:35
   7       let mut _2: isize;                   // in scope 0 at $DIR/simplify-arm.rs:11:9: 11:16
   8       let _3: u8;                          // in scope 0 at $DIR/simplify-arm.rs:11:14: 11:15
   9       let mut _4: u8;                      // in scope 0 at $DIR/simplify-arm.rs:11:25: 11:26
  10       scope 1 {
  11 -         debug v => _3;                   // in scope 1 at $DIR/simplify-arm.rs:11:14: 11:15
  12 +         debug v => ((_0 as Some).0: u8); // in scope 1 at $DIR/simplify-arm.rs:11:14: 11:15
  13       }
  14
  15       bb0: {
  16           _2 = discriminant(_1);           // scope 0 at $DIR/simplify-arm.rs:11:9: 11:16
  17           switchInt(move _2) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/simplify-arm.rs:11:9: 11:16
  18       }
  19
  20       bb1: {
  21           discriminant(_0) = 0;            // scope 0 at $DIR/simplify-arm.rs:12:17: 12:21
  22           goto -> bb4;                     // scope 0 at $DIR/simplify-arm.rs:10:5: 13:6
  23       }
  24
  25       bb2: {
  26           unreachable;                     // scope 0 at $DIR/simplify-arm.rs:10:11: 10:12
  27       }
  28
  29       bb3: {
  30 -         StorageLive(_3);                 // scope 0 at $DIR/simplify-arm.rs:11:14: 11:15
  31 -         _3 = ((_1 as Some).0: u8);       // scope 0 at $DIR/simplify-arm.rs:11:14: 11:15
  32 -         StorageLive(_4);                 // scope 1 at $DIR/simplify-arm.rs:11:25: 11:26
  33 -         _4 = _3;                         // scope 1 at $DIR/simplify-arm.rs:11:25: 11:26
  34 -         ((_0 as Some).0: u8) = move _4;  // scope 1 at $DIR/simplify-arm.rs:11:20: 11:27
  35 -         discriminant(_0) = 1;            // scope 1 at $DIR/simplify-arm.rs:11:20: 11:27
  36 -         StorageDead(_4);                 // scope 1 at $DIR/simplify-arm.rs:11:26: 11:27
  37 -         StorageDead(_3);                 // scope 0 at $DIR/simplify-arm.rs:11:26: 11:27
  38 +         _0 = move _1;                    // scope 1 at $DIR/simplify-arm.rs:11:20: 11:27
  39           goto -> bb4;                     // scope 0 at $DIR/simplify-arm.rs:10:5: 13:6
  40       }
  41
  42       bb4: {
  43           return;                          // scope 0 at $DIR/simplify-arm.rs:14:2: 14:2
  44       }
  45   }
  46