tests/mir-opt/pre-codegen/two_unwrap_unchecked.two_unwrap_unchecked.GVN.diff

- // MIR for `two_unwrap_unchecked` before GVN
+ // MIR for `two_unwrap_unchecked` after GVN
  
  fn two_unwrap_unchecked(_1: &Option<i32>) -> i32 {
      debug v => _1;
      let mut _0: i32;
      let _2: i32;
      let mut _3: std::option::Option<i32>;
      let mut _5: std::option::Option<i32>;
      let mut _6: i32;
      let mut _7: i32;
      scope 1 {
          debug v1 => _2;
          let _4: i32;
          scope 2 {
              debug v2 => _4;
          }
          scope 8 (inlined #[track_caller] Option::<i32>::unwrap_unchecked) {
              let mut _9: isize;
              scope 9 {
              }
              scope 10 (inlined #[track_caller] unreachable_unchecked) {
                  scope 11 (inlined core::ub_checks::check_language_ub) {
                      scope 12 (inlined core::ub_checks::check_language_ub::runtime) {
                      }
                  }
              }
          }
      }
      scope 3 (inlined #[track_caller] Option::<i32>::unwrap_unchecked) {
          let mut _8: isize;
          scope 4 {
          }
          scope 5 (inlined #[track_caller] unreachable_unchecked) {
              scope 6 (inlined core::ub_checks::check_language_ub) {
                  scope 7 (inlined core::ub_checks::check_language_ub::runtime) {
                  }
              }
          }
      }
  
      bb0: {
-         StorageLive(_2);
-         StorageLive(_3);
+         nop;
+         nop;
          _3 = copy (*_1);
-         StorageLive(_8);
+         nop;
          _8 = discriminant(_3);
-         switchInt(move _8) -> [0: bb2, 1: bb3, otherwise: bb1];
+         switchInt(copy _8) -> [0: bb2, 1: bb3, otherwise: bb1];
      }
  
      bb1: {
          unreachable;
      }
  
      bb2: {
          unreachable;
      }
  
      bb3: {
-         _2 = move ((_3 as Some).0: i32);
-         StorageDead(_8);
-         StorageDead(_3);
+         _2 = copy ((_3 as Some).0: i32);
+         nop;
+         nop;
          StorageLive(_4);
          StorageLive(_5);
-         _5 = copy (*_1);
+         _5 = copy _3;
          StorageLive(_9);
-         _9 = discriminant(_5);
-         switchInt(move _9) -> [0: bb4, 1: bb5, otherwise: bb1];
+         _9 = copy _8;
+         switchInt(copy _8) -> [0: bb4, 1: bb5, otherwise: bb1];
      }
  
      bb4: {
          unreachable;
      }
  
      bb5: {
-         _4 = move ((_5 as Some).0: i32);
+         _4 = copy _2;
          StorageDead(_9);
          StorageDead(_5);
          StorageLive(_6);
          _6 = copy _2;
          StorageLive(_7);
-         _7 = copy _4;
-         _0 = Add(move _6, move _7);
+         _7 = copy _2;
+         _0 = Add(copy _2, copy _2);
          StorageDead(_7);
          StorageDead(_6);
          StorageDead(_4);
-         StorageDead(_2);
+         nop;
          return;
      }
  }