- // MIR for `main` before ConstDebugInfo
+ // MIR for `main` after ConstDebugInfo
  
  fn main() -> () {
      let mut _0: ();
      let _1: u8;
      let mut _5: u8;
      let mut _6: u8;
      let mut _7: u8;
      let mut _8: u8;
      let mut _12: u32;
      let mut _13: u32;
      scope 1 {
-         debug x => _1;
+         debug x => const 1_u8;
          let _2: u8;
          scope 2 {
-             debug y => _2;
+             debug y => const 2_u8;
              let _3: u8;
              scope 3 {
-                 debug z => _3;
+                 debug z => const 3_u8;
                  let _4: u8;
                  scope 4 {
-                     debug sum => _4;
+                     debug sum => const 6_u8;
                      let _9: &str;
                      scope 5 {
-                         debug s => _9;
+                         debug s => const "hello, world!";
                          let _14: bool;
                          let _15: bool;
                          let _16: u32;
                          scope 6 {
-                             debug ((f: (bool, bool, u32)).0: bool) => _14;
-                             debug ((f: (bool, bool, u32)).1: bool) => _15;
-                             debug ((f: (bool, bool, u32)).2: u32) => _16;
+                             debug ((f: (bool, bool, u32)).0: bool) => const true;
+                             debug ((f: (bool, bool, u32)).1: bool) => const false;
+                             debug ((f: (bool, bool, u32)).2: u32) => const 123_u32;
                              let _10: std::option::Option<u16>;
                              scope 7 {
-                                 debug o => _10;
+                                 debug o => const Option::<u16>::Some(99_u16);
                                  let _17: u32;
                                  let _18: u32;
                                  scope 8 {
-                                     debug ((p: Point).0: u32) => _17;
-                                     debug ((p: Point).1: u32) => _18;
+                                     debug ((p: Point).0: u32) => const 32_u32;
+                                     debug ((p: Point).1: u32) => const 32_u32;
                                      let _11: u32;
                                      scope 9 {
-                                         debug a => _11;
+                                         debug a => const 64_u32;
                                      }
                                  }
                              }
                          }
                      }
                  }
              }
          }
      }
  
      bb0: {
          _1 = const 1_u8;
          _2 = const 2_u8;
          _3 = const 3_u8;
          StorageLive(_4);
          StorageLive(_5);
          _5 = const 3_u8;
          _4 = const 6_u8;
          StorageDead(_5);
          StorageLive(_9);
          _9 = const "hello, world!";
          StorageLive(_14);
          StorageLive(_15);
          StorageLive(_16);
          _14 = const true;
          _15 = const false;
          _16 = const 123_u32;
          StorageLive(_10);
          _10 = const Option::<u16>::Some(99_u16);
          _17 = const 32_u32;
          _18 = const 32_u32;
          StorageLive(_11);
          _11 = const 64_u32;
          StorageDead(_11);
          StorageDead(_10);
          StorageDead(_14);
          StorageDead(_15);
          StorageDead(_16);
          StorageDead(_9);
          StorageDead(_4);
          return;
      }
  }
  
  ALLOC0 (size: 4, align: 2) {
      01 00 63 00                                     │ ..c.
  }