Merging upstream version 1.71.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 475 insertions, 0 deletions

diff --git a/tests/mir-opt/reference_prop.reference_propagation.ReferencePropagation.diff b/tests/mir-opt/reference_prop.reference_propagation.ReferencePropagation.diff
new file mode 100644
index 000000000..7b31ee695
--- /dev/null
+++ b/tests/mir-opt/reference_prop.reference_propagation.ReferencePropagation.diff
@@ -0,0 +1,475 @@
+- // MIR for `reference_propagation` before ReferencePropagation
++ // MIR for `reference_propagation` after ReferencePropagation
+  
+  fn reference_propagation(_1: &T, _2: &T) -> () {
+      debug single => _1;                  // in scope 0 at $DIR/reference_prop.rs:+0:39: +0:45
+      debug multiple => _2;                // in scope 0 at $DIR/reference_prop.rs:+0:54: +0:66
+      let mut _0: ();                      // return place in scope 0 at $DIR/reference_prop.rs:+0:75: +0:75
+      let _3: ();                          // in scope 0 at $DIR/reference_prop.rs:+2:5: +7:6
+      let _4: usize;                       // in scope 0 at $DIR/reference_prop.rs:+3:13: +3:14
+      let _7: ();                          // in scope 0 at $DIR/reference_prop.rs:+6:9: +6:19
+      let mut _8: ();                      // in scope 0 at $DIR/reference_prop.rs:+6:16: +6:18
+      let _9: ();                          // in scope 0 at $DIR/reference_prop.rs:+10:5: +18:6
+      let _10: usize;                      // in scope 0 at $DIR/reference_prop.rs:+11:13: +11:14
+      let mut _13: &usize;                 // in scope 0 at $DIR/reference_prop.rs:+14:13: +14:16
+      let _14: &usize;                     // in scope 0 at $DIR/reference_prop.rs:+14:13: +14:16
+      let _16: ();                         // in scope 0 at $DIR/reference_prop.rs:+17:9: +17:19
+      let mut _17: ();                     // in scope 0 at $DIR/reference_prop.rs:+17:16: +17:18
+      let _18: ();                         // in scope 0 at $DIR/reference_prop.rs:+21:5: +27:6
+      let _19: usize;                      // in scope 0 at $DIR/reference_prop.rs:+22:13: +22:14
+      let _23: ();                         // in scope 0 at $DIR/reference_prop.rs:+26:9: +26:18
+      let mut _24: &&usize;                // in scope 0 at $DIR/reference_prop.rs:+26:16: +26:17
+      let _25: ();                         // in scope 0 at $DIR/reference_prop.rs:+30:5: +36:6
+      let _26: usize;                      // in scope 0 at $DIR/reference_prop.rs:+31:13: +31:14
+      let _30: ();                         // in scope 0 at $DIR/reference_prop.rs:+35:9: +35:18
+      let mut _31: *mut &usize;            // in scope 0 at $DIR/reference_prop.rs:+35:16: +35:17
+      let _32: ();                         // in scope 0 at $DIR/reference_prop.rs:+39:5: +44:6
+      let _33: usize;                      // in scope 0 at $DIR/reference_prop.rs:+40:13: +40:14
+      let _36: ();                         // in scope 0 at $DIR/reference_prop.rs:+43:9: +43:18
+      let mut _37: &usize;                 // in scope 0 at $DIR/reference_prop.rs:+43:16: +43:17
+      let _38: ();                         // in scope 0 at $DIR/reference_prop.rs:+47:5: +57:6
+      let _39: usize;                      // in scope 0 at $DIR/reference_prop.rs:+48:13: +48:14
+      let _45: ();                         // in scope 0 at $DIR/reference_prop.rs:+56:9: +56:19
+      let mut _46: &usize;                 // in scope 0 at $DIR/reference_prop.rs:+56:16: +56:18
+      let _47: ();                         // in scope 0 at $DIR/reference_prop.rs:+60:5: +64:6
+      let _48: &T;                         // in scope 0 at $DIR/reference_prop.rs:+61:13: +61:14
+      let _50: ();                         // in scope 0 at $DIR/reference_prop.rs:+63:9: +63:19
+      let mut _51: ();                     // in scope 0 at $DIR/reference_prop.rs:+63:16: +63:18
+      let _52: ();                         // in scope 0 at $DIR/reference_prop.rs:+67:5: +72:6
+      let _53: &T;                         // in scope 0 at $DIR/reference_prop.rs:+68:13: +68:14
+      let mut _54: &T;                     // in scope 0 at $DIR/reference_prop.rs:+69:20: +69:28
+      let _55: &T;                         // in scope 0 at $DIR/reference_prop.rs:+69:20: +69:28
+      let _57: ();                         // in scope 0 at $DIR/reference_prop.rs:+71:9: +71:19
+      let mut _58: ();                     // in scope 0 at $DIR/reference_prop.rs:+71:16: +71:18
+      let _59: ();                         // in scope 0 at $DIR/reference_prop.rs:+75:5: +81:6
+      let _60: usize;                      // in scope 0 at $DIR/reference_prop.rs:+76:13: +76:14
+      let _64: ();                         // in scope 0 at $DIR/reference_prop.rs:+80:9: +80:19
+      let mut _65: ();                     // in scope 0 at $DIR/reference_prop.rs:+80:16: +80:18
+      let _66: usize;                      // in scope 0 at $DIR/reference_prop.rs:+85:13: +85:14
+      let _70: ();                         // in scope 0 at $DIR/reference_prop.rs:+89:9: +89:19
+      let mut _71: ();                     // in scope 0 at $DIR/reference_prop.rs:+89:16: +89:18
+      scope 1 {
+          debug a => _4;                   // in scope 1 at $DIR/reference_prop.rs:+3:13: +3:14
+          let _5: &usize;                  // in scope 1 at $DIR/reference_prop.rs:+4:13: +4:14
+          scope 2 {
+-             debug b => _5;               // in scope 2 at $DIR/reference_prop.rs:+4:13: +4:14
++             debug b => &_4;              // in scope 2 at $DIR/reference_prop.rs:+4:13: +4:14
+              let _6: usize;               // in scope 2 at $DIR/reference_prop.rs:+5:13: +5:14
+              scope 3 {
+                  debug c => _6;           // in scope 3 at $DIR/reference_prop.rs:+5:13: +5:14
+              }
+          }
+      }
+      scope 4 {
+          debug a => _10;                  // in scope 4 at $DIR/reference_prop.rs:+11:13: +11:14
+          let _11: usize;                  // in scope 4 at $DIR/reference_prop.rs:+12:13: +12:15
+          scope 5 {
+              debug a2 => _11;             // in scope 5 at $DIR/reference_prop.rs:+12:13: +12:15
+              let mut _12: &usize;         // in scope 5 at $DIR/reference_prop.rs:+13:13: +13:18
+              scope 6 {
+                  debug b => _12;          // in scope 6 at $DIR/reference_prop.rs:+13:13: +13:18
+                  let _15: usize;          // in scope 6 at $DIR/reference_prop.rs:+16:13: +16:14
+                  scope 7 {
+                      debug c => _15;      // in scope 7 at $DIR/reference_prop.rs:+16:13: +16:14
+                  }
+              }
+          }
+      }
+      scope 8 {
+          debug a => _19;                  // in scope 8 at $DIR/reference_prop.rs:+22:13: +22:14
+          let _20: &usize;                 // in scope 8 at $DIR/reference_prop.rs:+23:13: +23:14
+          scope 9 {
+              debug b => _20;              // in scope 9 at $DIR/reference_prop.rs:+23:13: +23:14
+              let _21: &&usize;            // in scope 9 at $DIR/reference_prop.rs:+24:13: +24:14
+              scope 10 {
+                  debug d => _21;          // in scope 10 at $DIR/reference_prop.rs:+24:13: +24:14
+                  let _22: usize;          // in scope 10 at $DIR/reference_prop.rs:+25:13: +25:14
+                  scope 11 {
+                      debug c => _22;      // in scope 11 at $DIR/reference_prop.rs:+25:13: +25:14
+                  }
+              }
+          }
+      }
+      scope 12 {
+          debug a => _26;                  // in scope 12 at $DIR/reference_prop.rs:+31:13: +31:14
+          let mut _27: &usize;             // in scope 12 at $DIR/reference_prop.rs:+32:13: +32:18
+          scope 13 {
+              debug b => _27;              // in scope 13 at $DIR/reference_prop.rs:+32:13: +32:18
+              let _28: *mut &usize;        // in scope 13 at $DIR/reference_prop.rs:+33:13: +33:14
+              scope 14 {
+                  debug d => _28;          // in scope 14 at $DIR/reference_prop.rs:+33:13: +33:14
+                  let _29: usize;          // in scope 14 at $DIR/reference_prop.rs:+34:13: +34:14
+                  scope 15 {
+                      debug c => _29;      // in scope 15 at $DIR/reference_prop.rs:+34:13: +34:14
+                  }
+              }
+          }
+      }
+      scope 16 {
+          debug a => _33;                  // in scope 16 at $DIR/reference_prop.rs:+40:13: +40:14
+          let _34: &usize;                 // in scope 16 at $DIR/reference_prop.rs:+41:13: +41:14
+          scope 17 {
+              debug b => _34;              // in scope 17 at $DIR/reference_prop.rs:+41:13: +41:14
+              let _35: usize;              // in scope 17 at $DIR/reference_prop.rs:+42:13: +42:14
+              scope 18 {
+                  debug c => _35;          // in scope 18 at $DIR/reference_prop.rs:+42:13: +42:14
+              }
+          }
+      }
+      scope 19 {
+          debug a => _39;                  // in scope 19 at $DIR/reference_prop.rs:+48:13: +48:14
+          let _40: &usize;                 // in scope 19 at $DIR/reference_prop.rs:+49:13: +49:15
+          scope 20 {
+              debug b1 => _40;             // in scope 20 at $DIR/reference_prop.rs:+49:13: +49:15
+              let _41: usize;              // in scope 20 at $DIR/reference_prop.rs:+50:13: +50:14
+              scope 21 {
+                  debug c => _41;          // in scope 21 at $DIR/reference_prop.rs:+50:13: +50:14
+                  let _42: &usize;         // in scope 21 at $DIR/reference_prop.rs:+51:13: +51:15
+                  scope 22 {
+                      debug b2 => _42;     // in scope 22 at $DIR/reference_prop.rs:+51:13: +51:15
+                      let _43: usize;      // in scope 22 at $DIR/reference_prop.rs:+52:13: +52:15
+                      scope 23 {
+                          debug c2 => _43; // in scope 23 at $DIR/reference_prop.rs:+52:13: +52:15
+                          let _44: &usize; // in scope 23 at $DIR/reference_prop.rs:+53:13: +53:15
+                          scope 24 {
+                              debug b3 => _44; // in scope 24 at $DIR/reference_prop.rs:+53:13: +53:15
+                          }
+                      }
+                  }
+              }
+          }
+      }
+      scope 25 {
+-         debug a => _48;                  // in scope 25 at $DIR/reference_prop.rs:+61:13: +61:14
++         debug a => _1;                   // in scope 25 at $DIR/reference_prop.rs:+61:13: +61:14
+          let _49: T;                      // in scope 25 at $DIR/reference_prop.rs:+62:13: +62:14
+          scope 26 {
+              debug b => _49;              // in scope 26 at $DIR/reference_prop.rs:+62:13: +62:14
+          }
+      }
+      scope 27 {
+          debug a => _53;                  // in scope 27 at $DIR/reference_prop.rs:+68:13: +68:14
+          let _56: T;                      // in scope 27 at $DIR/reference_prop.rs:+70:13: +70:14
+          scope 28 {
+              debug b => _56;              // in scope 28 at $DIR/reference_prop.rs:+70:13: +70:14
+          }
+      }
+      scope 29 {
+          debug a => _60;                  // in scope 29 at $DIR/reference_prop.rs:+76:13: +76:14
+          let _61: &usize;                 // in scope 29 at $DIR/reference_prop.rs:+77:13: +77:14
+          scope 30 {
+-             debug b => _61;              // in scope 30 at $DIR/reference_prop.rs:+77:13: +77:14
++             debug b => &_60;             // in scope 30 at $DIR/reference_prop.rs:+77:13: +77:14
+              let _62: &&usize;            // in scope 30 at $DIR/reference_prop.rs:+78:13: +78:14
+              scope 31 {
+-                 debug d => _62;          // in scope 31 at $DIR/reference_prop.rs:+78:13: +78:14
++                 debug d => &&_60;        // in scope 31 at $DIR/reference_prop.rs:+78:13: +78:14
+                  let _63: usize;          // in scope 31 at $DIR/reference_prop.rs:+79:13: +79:14
+                  scope 32 {
+                      debug c => _63;      // in scope 32 at $DIR/reference_prop.rs:+79:13: +79:14
+                  }
+              }
+          }
+      }
+      scope 33 {
+          debug a => _66;                  // in scope 33 at $DIR/reference_prop.rs:+85:13: +85:14
+          let mut _67: &usize;             // in scope 33 at $DIR/reference_prop.rs:+86:13: +86:18
+          scope 34 {
+-             debug b => _67;              // in scope 34 at $DIR/reference_prop.rs:+86:13: +86:18
++             debug b => &_66;             // in scope 34 at $DIR/reference_prop.rs:+86:13: +86:18
+              let _68: &mut &usize;        // in scope 34 at $DIR/reference_prop.rs:+87:13: +87:14
+              scope 35 {
+-                 debug d => _68;          // in scope 35 at $DIR/reference_prop.rs:+87:13: +87:14
++                 debug d => &&_66;        // in scope 35 at $DIR/reference_prop.rs:+87:13: +87:14
+                  let _69: usize;          // in scope 35 at $DIR/reference_prop.rs:+88:13: +88:14
+                  scope 36 {
+                      debug c => _69;      // in scope 36 at $DIR/reference_prop.rs:+88:13: +88:14
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+-         StorageLive(_3);                 // scope 0 at $DIR/reference_prop.rs:+2:5: +7:6
+          StorageLive(_4);                 // scope 0 at $DIR/reference_prop.rs:+3:13: +3:14
+          _4 = const 5_usize;              // scope 0 at $DIR/reference_prop.rs:+3:17: +3:24
+-         StorageLive(_5);                 // scope 1 at $DIR/reference_prop.rs:+4:13: +4:14
+-         _5 = &_4;                        // scope 1 at $DIR/reference_prop.rs:+4:17: +4:19
+          StorageLive(_6);                 // scope 2 at $DIR/reference_prop.rs:+5:13: +5:14
+-         _6 = (*_5);                      // scope 2 at $DIR/reference_prop.rs:+5:17: +5:19
++         _6 = _4;                         // scope 2 at $DIR/reference_prop.rs:+5:17: +5:19
+          StorageLive(_7);                 // scope 3 at $DIR/reference_prop.rs:+6:9: +6:19
+          StorageLive(_8);                 // scope 3 at $DIR/reference_prop.rs:+6:16: +6:18
+          _8 = ();                         // scope 3 at $DIR/reference_prop.rs:+6:16: +6:18
+          _7 = opaque::<()>(move _8) -> bb1; // scope 3 at $DIR/reference_prop.rs:+6:9: +6:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:16:9: 16:15
+                                           // + literal: Const { ty: fn(()) {opaque::<()>}, val: Value(<ZST>) }
+      }
+  
+      bb1: {
+          StorageDead(_8);                 // scope 3 at $DIR/reference_prop.rs:+6:18: +6:19
+          StorageDead(_7);                 // scope 3 at $DIR/reference_prop.rs:+6:19: +6:20
+-         _3 = const ();                   // scope 0 at $DIR/reference_prop.rs:+2:5: +7:6
+          StorageDead(_6);                 // scope 2 at $DIR/reference_prop.rs:+7:5: +7:6
+-         StorageDead(_5);                 // scope 1 at $DIR/reference_prop.rs:+7:5: +7:6
+          StorageDead(_4);                 // scope 0 at $DIR/reference_prop.rs:+7:5: +7:6
+-         StorageDead(_3);                 // scope 0 at $DIR/reference_prop.rs:+7:5: +7:6
+-         StorageLive(_9);                 // scope 0 at $DIR/reference_prop.rs:+10:5: +18:6
+          StorageLive(_10);                // scope 0 at $DIR/reference_prop.rs:+11:13: +11:14
+          _10 = const 5_usize;             // scope 0 at $DIR/reference_prop.rs:+11:17: +11:24
+          StorageLive(_11);                // scope 4 at $DIR/reference_prop.rs:+12:13: +12:15
+          _11 = const 7_usize;             // scope 4 at $DIR/reference_prop.rs:+12:18: +12:25
+          StorageLive(_12);                // scope 5 at $DIR/reference_prop.rs:+13:13: +13:18
+          _12 = &_10;                      // scope 5 at $DIR/reference_prop.rs:+13:21: +13:23
+          StorageLive(_13);                // scope 6 at $DIR/reference_prop.rs:+14:13: +14:16
+-         StorageLive(_14);                // scope 6 at $DIR/reference_prop.rs:+14:13: +14:16
+-         _14 = &_11;                      // scope 6 at $DIR/reference_prop.rs:+14:13: +14:16
+-         _13 = &(*_14);                   // scope 6 at $DIR/reference_prop.rs:+14:13: +14:16
++         _13 = &_11;                      // scope 6 at $DIR/reference_prop.rs:+14:13: +14:16
+          _12 = move _13;                  // scope 6 at $DIR/reference_prop.rs:+14:9: +14:16
+          StorageDead(_13);                // scope 6 at $DIR/reference_prop.rs:+14:15: +14:16
+-         StorageDead(_14);                // scope 6 at $DIR/reference_prop.rs:+14:16: +14:17
+          StorageLive(_15);                // scope 6 at $DIR/reference_prop.rs:+16:13: +16:14
+          _15 = (*_12);                    // scope 6 at $DIR/reference_prop.rs:+16:17: +16:19
+          StorageLive(_16);                // scope 7 at $DIR/reference_prop.rs:+17:9: +17:19
+          StorageLive(_17);                // scope 7 at $DIR/reference_prop.rs:+17:16: +17:18
+          _17 = ();                        // scope 7 at $DIR/reference_prop.rs:+17:16: +17:18
+          _16 = opaque::<()>(move _17) -> bb2; // scope 7 at $DIR/reference_prop.rs:+17:9: +17:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:27:9: 27:15
+                                           // + literal: Const { ty: fn(()) {opaque::<()>}, val: Value(<ZST>) }
+      }
+  
+      bb2: {
+          StorageDead(_17);                // scope 7 at $DIR/reference_prop.rs:+17:18: +17:19
+          StorageDead(_16);                // scope 7 at $DIR/reference_prop.rs:+17:19: +17:20
+-         _9 = const ();                   // scope 0 at $DIR/reference_prop.rs:+10:5: +18:6
+          StorageDead(_15);                // scope 6 at $DIR/reference_prop.rs:+18:5: +18:6
+          StorageDead(_12);                // scope 5 at $DIR/reference_prop.rs:+18:5: +18:6
+          StorageDead(_11);                // scope 4 at $DIR/reference_prop.rs:+18:5: +18:6
+          StorageDead(_10);                // scope 0 at $DIR/reference_prop.rs:+18:5: +18:6
+-         StorageDead(_9);                 // scope 0 at $DIR/reference_prop.rs:+18:5: +18:6
+-         StorageLive(_18);                // scope 0 at $DIR/reference_prop.rs:+21:5: +27:6
+          StorageLive(_19);                // scope 0 at $DIR/reference_prop.rs:+22:13: +22:14
+          _19 = const 5_usize;             // scope 0 at $DIR/reference_prop.rs:+22:17: +22:24
+          StorageLive(_20);                // scope 8 at $DIR/reference_prop.rs:+23:13: +23:14
+          _20 = &_19;                      // scope 8 at $DIR/reference_prop.rs:+23:17: +23:19
+          StorageLive(_21);                // scope 9 at $DIR/reference_prop.rs:+24:13: +24:14
+          _21 = &_20;                      // scope 9 at $DIR/reference_prop.rs:+24:17: +24:19
+          StorageLive(_22);                // scope 10 at $DIR/reference_prop.rs:+25:13: +25:14
+          _22 = (*_20);                    // scope 10 at $DIR/reference_prop.rs:+25:17: +25:19
+          StorageLive(_23);                // scope 11 at $DIR/reference_prop.rs:+26:9: +26:18
+          StorageLive(_24);                // scope 11 at $DIR/reference_prop.rs:+26:16: +26:17
+          _24 = _21;                       // scope 11 at $DIR/reference_prop.rs:+26:16: +26:17
+          _23 = opaque::<&&usize>(move _24) -> bb3; // scope 11 at $DIR/reference_prop.rs:+26:9: +26:18
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:36:9: 36:15
+                                           // + literal: Const { ty: fn(&&usize) {opaque::<&&usize>}, val: Value(<ZST>) }
+      }
+  
+      bb3: {
+          StorageDead(_24);                // scope 11 at $DIR/reference_prop.rs:+26:17: +26:18
+          StorageDead(_23);                // scope 11 at $DIR/reference_prop.rs:+26:18: +26:19
+-         _18 = const ();                  // scope 0 at $DIR/reference_prop.rs:+21:5: +27:6
+          StorageDead(_22);                // scope 10 at $DIR/reference_prop.rs:+27:5: +27:6
+          StorageDead(_21);                // scope 9 at $DIR/reference_prop.rs:+27:5: +27:6
+          StorageDead(_20);                // scope 8 at $DIR/reference_prop.rs:+27:5: +27:6
+          StorageDead(_19);                // scope 0 at $DIR/reference_prop.rs:+27:5: +27:6
+-         StorageDead(_18);                // scope 0 at $DIR/reference_prop.rs:+27:5: +27:6
+-         StorageLive(_25);                // scope 0 at $DIR/reference_prop.rs:+30:5: +36:6
+          StorageLive(_26);                // scope 0 at $DIR/reference_prop.rs:+31:13: +31:14
+          _26 = const 5_usize;             // scope 0 at $DIR/reference_prop.rs:+31:17: +31:24
+          StorageLive(_27);                // scope 12 at $DIR/reference_prop.rs:+32:13: +32:18
+          _27 = &_26;                      // scope 12 at $DIR/reference_prop.rs:+32:21: +32:23
+          StorageLive(_28);                // scope 13 at $DIR/reference_prop.rs:+33:13: +33:14
+          _28 = &raw mut _27;              // scope 13 at $DIR/reference_prop.rs:+33:17: +33:27
+          StorageLive(_29);                // scope 14 at $DIR/reference_prop.rs:+34:13: +34:14
+          _29 = (*_27);                    // scope 14 at $DIR/reference_prop.rs:+34:17: +34:19
+          StorageLive(_30);                // scope 15 at $DIR/reference_prop.rs:+35:9: +35:18
+          StorageLive(_31);                // scope 15 at $DIR/reference_prop.rs:+35:16: +35:17
+          _31 = _28;                       // scope 15 at $DIR/reference_prop.rs:+35:16: +35:17
+          _30 = opaque::<*mut &usize>(move _31) -> bb4; // scope 15 at $DIR/reference_prop.rs:+35:9: +35:18
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:45:9: 45:15
+                                           // + literal: Const { ty: fn(*mut &usize) {opaque::<*mut &usize>}, val: Value(<ZST>) }
+      }
+  
+      bb4: {
+          StorageDead(_31);                // scope 15 at $DIR/reference_prop.rs:+35:17: +35:18
+          StorageDead(_30);                // scope 15 at $DIR/reference_prop.rs:+35:18: +35:19
+-         _25 = const ();                  // scope 0 at $DIR/reference_prop.rs:+30:5: +36:6
+          StorageDead(_29);                // scope 14 at $DIR/reference_prop.rs:+36:5: +36:6
+          StorageDead(_28);                // scope 13 at $DIR/reference_prop.rs:+36:5: +36:6
+          StorageDead(_27);                // scope 12 at $DIR/reference_prop.rs:+36:5: +36:6
+          StorageDead(_26);                // scope 0 at $DIR/reference_prop.rs:+36:5: +36:6
+-         StorageDead(_25);                // scope 0 at $DIR/reference_prop.rs:+36:5: +36:6
+-         StorageLive(_32);                // scope 0 at $DIR/reference_prop.rs:+39:5: +44:6
+          StorageLive(_33);                // scope 0 at $DIR/reference_prop.rs:+40:13: +40:14
+          _33 = const 7_usize;             // scope 0 at $DIR/reference_prop.rs:+40:17: +40:24
+          StorageLive(_34);                // scope 16 at $DIR/reference_prop.rs:+41:13: +41:14
+          _34 = &_33;                      // scope 16 at $DIR/reference_prop.rs:+41:17: +41:19
+          StorageLive(_35);                // scope 17 at $DIR/reference_prop.rs:+42:13: +42:14
+-         _35 = (*_34);                    // scope 17 at $DIR/reference_prop.rs:+42:17: +42:19
++         _35 = _33;                       // scope 17 at $DIR/reference_prop.rs:+42:17: +42:19
+          StorageLive(_36);                // scope 18 at $DIR/reference_prop.rs:+43:9: +43:18
+          StorageLive(_37);                // scope 18 at $DIR/reference_prop.rs:+43:16: +43:17
+          _37 = _34;                       // scope 18 at $DIR/reference_prop.rs:+43:16: +43:17
+          _36 = opaque::<&usize>(move _37) -> bb5; // scope 18 at $DIR/reference_prop.rs:+43:9: +43:18
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:53:9: 53:15
+                                           // + literal: Const { ty: fn(&usize) {opaque::<&usize>}, val: Value(<ZST>) }
+      }
+  
+      bb5: {
+          StorageDead(_37);                // scope 18 at $DIR/reference_prop.rs:+43:17: +43:18
+          StorageDead(_36);                // scope 18 at $DIR/reference_prop.rs:+43:18: +43:19
+-         _32 = const ();                  // scope 0 at $DIR/reference_prop.rs:+39:5: +44:6
+          StorageDead(_35);                // scope 17 at $DIR/reference_prop.rs:+44:5: +44:6
+          StorageDead(_34);                // scope 16 at $DIR/reference_prop.rs:+44:5: +44:6
+          StorageDead(_33);                // scope 0 at $DIR/reference_prop.rs:+44:5: +44:6
+-         StorageDead(_32);                // scope 0 at $DIR/reference_prop.rs:+44:5: +44:6
+-         StorageLive(_38);                // scope 0 at $DIR/reference_prop.rs:+47:5: +57:6
+          StorageLive(_39);                // scope 0 at $DIR/reference_prop.rs:+48:13: +48:14
+          _39 = const 7_usize;             // scope 0 at $DIR/reference_prop.rs:+48:17: +48:24
+          StorageLive(_40);                // scope 19 at $DIR/reference_prop.rs:+49:13: +49:15
+          _40 = &_39;                      // scope 19 at $DIR/reference_prop.rs:+49:18: +49:20
+          StorageLive(_41);                // scope 20 at $DIR/reference_prop.rs:+50:13: +50:14
+-         _41 = (*_40);                    // scope 20 at $DIR/reference_prop.rs:+50:17: +50:20
++         _41 = _39;                       // scope 20 at $DIR/reference_prop.rs:+50:17: +50:20
+          StorageLive(_42);                // scope 21 at $DIR/reference_prop.rs:+51:13: +51:15
+          _42 = _40;                       // scope 21 at $DIR/reference_prop.rs:+51:18: +51:20
+          StorageLive(_43);                // scope 22 at $DIR/reference_prop.rs:+52:13: +52:15
+-         _43 = (*_42);                    // scope 22 at $DIR/reference_prop.rs:+52:18: +52:21
++         _43 = _39;                       // scope 22 at $DIR/reference_prop.rs:+52:18: +52:21
+          StorageLive(_44);                // scope 23 at $DIR/reference_prop.rs:+53:13: +53:15
+          _44 = _42;                       // scope 23 at $DIR/reference_prop.rs:+53:18: +53:20
+          StorageLive(_45);                // scope 24 at $DIR/reference_prop.rs:+56:9: +56:19
+          StorageLive(_46);                // scope 24 at $DIR/reference_prop.rs:+56:16: +56:18
+          _46 = _44;                       // scope 24 at $DIR/reference_prop.rs:+56:16: +56:18
+          _45 = opaque::<&usize>(move _46) -> bb6; // scope 24 at $DIR/reference_prop.rs:+56:9: +56:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:66:9: 66:15
+                                           // + literal: Const { ty: fn(&usize) {opaque::<&usize>}, val: Value(<ZST>) }
+      }
+  
+      bb6: {
+          StorageDead(_46);                // scope 24 at $DIR/reference_prop.rs:+56:18: +56:19
+          StorageDead(_45);                // scope 24 at $DIR/reference_prop.rs:+56:19: +56:20
+-         _38 = const ();                  // scope 0 at $DIR/reference_prop.rs:+47:5: +57:6
+          StorageDead(_44);                // scope 23 at $DIR/reference_prop.rs:+57:5: +57:6
+          StorageDead(_43);                // scope 22 at $DIR/reference_prop.rs:+57:5: +57:6
+          StorageDead(_42);                // scope 21 at $DIR/reference_prop.rs:+57:5: +57:6
+          StorageDead(_41);                // scope 20 at $DIR/reference_prop.rs:+57:5: +57:6
+          StorageDead(_40);                // scope 19 at $DIR/reference_prop.rs:+57:5: +57:6
+          StorageDead(_39);                // scope 0 at $DIR/reference_prop.rs:+57:5: +57:6
+-         StorageDead(_38);                // scope 0 at $DIR/reference_prop.rs:+57:5: +57:6
+-         StorageLive(_47);                // scope 0 at $DIR/reference_prop.rs:+60:5: +64:6
+-         StorageLive(_48);                // scope 0 at $DIR/reference_prop.rs:+61:13: +61:14
+-         _48 = &(*_1);                    // scope 0 at $DIR/reference_prop.rs:+61:17: +61:25
+          StorageLive(_49);                // scope 25 at $DIR/reference_prop.rs:+62:13: +62:14
+-         _49 = (*_48);                    // scope 25 at $DIR/reference_prop.rs:+62:17: +62:19
++         _49 = (*_1);                     // scope 25 at $DIR/reference_prop.rs:+62:17: +62:19
+          StorageLive(_50);                // scope 26 at $DIR/reference_prop.rs:+63:9: +63:19
+          StorageLive(_51);                // scope 26 at $DIR/reference_prop.rs:+63:16: +63:18
+          _51 = ();                        // scope 26 at $DIR/reference_prop.rs:+63:16: +63:18
+          _50 = opaque::<()>(move _51) -> bb7; // scope 26 at $DIR/reference_prop.rs:+63:9: +63:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:73:9: 73:15
+                                           // + literal: Const { ty: fn(()) {opaque::<()>}, val: Value(<ZST>) }
+      }
+  
+      bb7: {
+          StorageDead(_51);                // scope 26 at $DIR/reference_prop.rs:+63:18: +63:19
+          StorageDead(_50);                // scope 26 at $DIR/reference_prop.rs:+63:19: +63:20
+-         _47 = const ();                  // scope 0 at $DIR/reference_prop.rs:+60:5: +64:6
+          StorageDead(_49);                // scope 25 at $DIR/reference_prop.rs:+64:5: +64:6
+-         StorageDead(_48);                // scope 0 at $DIR/reference_prop.rs:+64:5: +64:6
+-         StorageDead(_47);                // scope 0 at $DIR/reference_prop.rs:+64:5: +64:6
+-         StorageLive(_52);                // scope 0 at $DIR/reference_prop.rs:+67:5: +72:6
+          StorageLive(_53);                // scope 0 at $DIR/reference_prop.rs:+68:13: +68:14
+          _53 = &(*_2);                    // scope 0 at $DIR/reference_prop.rs:+68:17: +68:27
+          StorageLive(_54);                // scope 27 at $DIR/reference_prop.rs:+69:20: +69:28
+-         StorageLive(_55);                // scope 27 at $DIR/reference_prop.rs:+69:20: +69:28
+-         _55 = &(*_1);                    // scope 27 at $DIR/reference_prop.rs:+69:20: +69:28
+-         _54 = &(*_55);                   // scope 27 at $DIR/reference_prop.rs:+69:20: +69:28
++         _54 = &(*_1);                    // scope 27 at $DIR/reference_prop.rs:+69:20: +69:28
+          _2 = move _54;                   // scope 27 at $DIR/reference_prop.rs:+69:9: +69:28
+          StorageDead(_54);                // scope 27 at $DIR/reference_prop.rs:+69:27: +69:28
+-         StorageDead(_55);                // scope 27 at $DIR/reference_prop.rs:+69:28: +69:29
+          StorageLive(_56);                // scope 27 at $DIR/reference_prop.rs:+70:13: +70:14
+          _56 = (*_53);                    // scope 27 at $DIR/reference_prop.rs:+70:17: +70:19
+          StorageLive(_57);                // scope 28 at $DIR/reference_prop.rs:+71:9: +71:19
+          StorageLive(_58);                // scope 28 at $DIR/reference_prop.rs:+71:16: +71:18
+          _58 = ();                        // scope 28 at $DIR/reference_prop.rs:+71:16: +71:18
+          _57 = opaque::<()>(move _58) -> bb8; // scope 28 at $DIR/reference_prop.rs:+71:9: +71:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:81:9: 81:15
+                                           // + literal: Const { ty: fn(()) {opaque::<()>}, val: Value(<ZST>) }
+      }
+  
+      bb8: {
+          StorageDead(_58);                // scope 28 at $DIR/reference_prop.rs:+71:18: +71:19
+          StorageDead(_57);                // scope 28 at $DIR/reference_prop.rs:+71:19: +71:20
+-         _52 = const ();                  // scope 0 at $DIR/reference_prop.rs:+67:5: +72:6
+          StorageDead(_56);                // scope 27 at $DIR/reference_prop.rs:+72:5: +72:6
+          StorageDead(_53);                // scope 0 at $DIR/reference_prop.rs:+72:5: +72:6
+-         StorageDead(_52);                // scope 0 at $DIR/reference_prop.rs:+72:5: +72:6
+-         StorageLive(_59);                // scope 0 at $DIR/reference_prop.rs:+75:5: +81:6
+          StorageLive(_60);                // scope 0 at $DIR/reference_prop.rs:+76:13: +76:14
+          _60 = const 5_usize;             // scope 0 at $DIR/reference_prop.rs:+76:17: +76:24
+-         StorageLive(_61);                // scope 29 at $DIR/reference_prop.rs:+77:13: +77:14
+-         _61 = &_60;                      // scope 29 at $DIR/reference_prop.rs:+77:17: +77:19
+-         StorageLive(_62);                // scope 30 at $DIR/reference_prop.rs:+78:13: +78:14
+-         _62 = &_61;                      // scope 30 at $DIR/reference_prop.rs:+78:17: +78:19
+          StorageLive(_63);                // scope 31 at $DIR/reference_prop.rs:+79:13: +79:14
+-         _63 = (*_61);                    // scope 31 at $DIR/reference_prop.rs:+79:17: +79:19
++         _63 = _60;                       // scope 31 at $DIR/reference_prop.rs:+79:17: +79:19
+          StorageLive(_64);                // scope 32 at $DIR/reference_prop.rs:+80:9: +80:19
+          StorageLive(_65);                // scope 32 at $DIR/reference_prop.rs:+80:16: +80:18
+          _65 = ();                        // scope 32 at $DIR/reference_prop.rs:+80:16: +80:18
+          _64 = opaque::<()>(move _65) -> bb9; // scope 32 at $DIR/reference_prop.rs:+80:9: +80:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:90:9: 90:15
+                                           // + literal: Const { ty: fn(()) {opaque::<()>}, val: Value(<ZST>) }
+      }
+  
+      bb9: {
+          StorageDead(_65);                // scope 32 at $DIR/reference_prop.rs:+80:18: +80:19
+          StorageDead(_64);                // scope 32 at $DIR/reference_prop.rs:+80:19: +80:20
+-         _59 = const ();                  // scope 0 at $DIR/reference_prop.rs:+75:5: +81:6
+          StorageDead(_63);                // scope 31 at $DIR/reference_prop.rs:+81:5: +81:6
+-         StorageDead(_62);                // scope 30 at $DIR/reference_prop.rs:+81:5: +81:6
+-         StorageDead(_61);                // scope 29 at $DIR/reference_prop.rs:+81:5: +81:6
+          StorageDead(_60);                // scope 0 at $DIR/reference_prop.rs:+81:5: +81:6
+-         StorageDead(_59);                // scope 0 at $DIR/reference_prop.rs:+81:5: +81:6
+          StorageLive(_66);                // scope 0 at $DIR/reference_prop.rs:+85:13: +85:14
+          _66 = const 5_usize;             // scope 0 at $DIR/reference_prop.rs:+85:17: +85:24
+-         StorageLive(_67);                // scope 33 at $DIR/reference_prop.rs:+86:13: +86:18
+-         _67 = &_66;                      // scope 33 at $DIR/reference_prop.rs:+86:21: +86:23
+-         StorageLive(_68);                // scope 34 at $DIR/reference_prop.rs:+87:13: +87:14
+-         _68 = &mut _67;                  // scope 34 at $DIR/reference_prop.rs:+87:17: +87:23
+          StorageLive(_69);                // scope 35 at $DIR/reference_prop.rs:+88:13: +88:14
+-         _69 = (*_67);                    // scope 35 at $DIR/reference_prop.rs:+88:17: +88:19
++         _69 = _66;                       // scope 35 at $DIR/reference_prop.rs:+88:17: +88:19
+          StorageLive(_70);                // scope 36 at $DIR/reference_prop.rs:+89:9: +89:19
+          StorageLive(_71);                // scope 36 at $DIR/reference_prop.rs:+89:16: +89:18
+          _71 = ();                        // scope 36 at $DIR/reference_prop.rs:+89:16: +89:18
+          _70 = opaque::<()>(move _71) -> bb10; // scope 36 at $DIR/reference_prop.rs:+89:9: +89:19
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:99:9: 99:15
+                                           // + literal: Const { ty: fn(()) {opaque::<()>}, val: Value(<ZST>) }
+      }
+  
+      bb10: {
+          StorageDead(_71);                // scope 36 at $DIR/reference_prop.rs:+89:18: +89:19
+          StorageDead(_70);                // scope 36 at $DIR/reference_prop.rs:+89:19: +89:20
+          _0 = const ();                   // scope 0 at $DIR/reference_prop.rs:+84:5: +90:6
+          StorageDead(_69);                // scope 35 at $DIR/reference_prop.rs:+90:5: +90:6
+-         StorageDead(_68);                // scope 34 at $DIR/reference_prop.rs:+90:5: +90:6
+-         StorageDead(_67);                // scope 33 at $DIR/reference_prop.rs:+90:5: +90:6
+          StorageDead(_66);                // scope 0 at $DIR/reference_prop.rs:+90:5: +90:6
+          return;                          // scope 0 at $DIR/reference_prop.rs:+91:2: +91:2
+      }
+  }
+