diff --git a/compiler/rustc_mir/src/transform/inline.rs b/compiler/rustc_mir/src/transform/inline.rs
index 96df6023c71..947466c87fa 100644
--- a/compiler/rustc_mir/src/transform/inline.rs
+++ b/compiler/rustc_mir/src/transform/inline.rs
@@ -435,6 +435,11 @@ impl Inliner<'tcx> {
                 let mut scope_map = IndexVec::with_capacity(callee_body.source_scopes.len());
 
                 for mut scope in callee_body.source_scopes.iter().cloned() {
+                    // Map the callee scopes into the caller.
+                    // FIXME(eddyb) this may ICE if the scopes are out of order.
+                    scope.parent_scope = scope.parent_scope.map(|s| scope_map[s]);
+                    scope.inlined_parent_scope = scope.inlined_parent_scope.map(|s| scope_map[s]);
+
                     if scope.parent_scope.is_none() {
                         let callsite_scope = &caller_body.source_scopes[callsite.source_info.scope];
 
diff --git a/src/test/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir b/src/test/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir
index 390b2320ef6..cb2cd785b48 100644
--- a/src/test/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir
+++ b/src/test/mir-opt/inline/inline_closure_borrows_arg.foo.Inline.after.mir
@@ -17,11 +17,11 @@ fn foo(_1: T, _2: &i32) -> i32 {
             debug r => _9;               // in scope 2 at $DIR/inline-closure-borrows-arg.rs:12:14: 12:15
             debug _s => _10;             // in scope 2 at $DIR/inline-closure-borrows-arg.rs:12:23: 12:25
             let _8: &i32;                // in scope 2 at $DIR/inline-closure-borrows-arg.rs:16:5: 16:12
+            scope 3 {
+                debug variable => _8;    // in scope 3 at $DIR/inline-closure-borrows-arg.rs:13:13: 13:21
+            }
         }
     }
-    scope 3 {
-        debug variable => _8;            // in scope 3 at $DIR/inline-closure-borrows-arg.rs:13:13: 13:21
-    }
 
     bb0: {
         StorageLive(_3);                 // scope 0 at $DIR/inline-closure-borrows-arg.rs:12:9: 12:10
diff --git a/src/test/mir-opt/inline/issue-76997-inline-scopes-parenting.rs b/src/test/mir-opt/inline/issue-76997-inline-scopes-parenting.rs
new file mode 100644
index 00000000000..76d806acc63
--- /dev/null
+++ b/src/test/mir-opt/inline/issue-76997-inline-scopes-parenting.rs
@@ -0,0 +1,7 @@
+// Tests that MIR inliner can handle `SourceScopeData` parenting correctly. (#76997)
+
+// EMIT_MIR issue_76997_inline_scopes_parenting.main.Inline.after.mir
+fn main() {
+    let f = |x| { let y = x; y };
+    f(())
+}
diff --git a/src/test/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir b/src/test/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir
new file mode 100644
index 00000000000..9d1e8aca408
--- /dev/null
+++ b/src/test/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir
@@ -0,0 +1,41 @@
+// MIR for `main` after Inline
+
+fn main() -> () {
+    let mut _0: ();                      // return place in scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:4:11: 4:11
+    let _1: [closure@$DIR/issue-76997-inline-scopes-parenting.rs:5:13: 5:33]; // in scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:5:9: 5:10
+    let mut _2: &[closure@$DIR/issue-76997-inline-scopes-parenting.rs:5:13: 5:33]; // in scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:6
+    let mut _3: ((),);                   // in scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+    let mut _4: ();                      // in scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:6:7: 6:9
+    let mut _6: ();                      // in scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+    scope 1 {
+        debug f => _1;                   // in scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:5:9: 5:10
+        scope 2 (inlined main::{closure#0}) { // at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+            debug x => _6;               // in scope 2 at $DIR/issue-76997-inline-scopes-parenting.rs:5:14: 5:15
+            let _5: ();                  // in scope 2 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+            scope 3 {
+                debug y => _5;           // in scope 3 at $DIR/issue-76997-inline-scopes-parenting.rs:5:23: 5:24
+            }
+        }
+    }
+
+    bb0: {
+        StorageLive(_1);                 // scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:5:9: 5:10
+        StorageLive(_2);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:6
+        _2 = &_1;                        // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:6
+        StorageLive(_3);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+        StorageLive(_4);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:7: 6:9
+        (_3.0: ()) = move _4;            // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+        StorageLive(_6);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+        _6 = move (_3.0: ());            // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+        StorageLive(_5);                 // scope 2 at $DIR/issue-76997-inline-scopes-parenting.rs:5:23: 5:24
+        _5 = const ();                   // scope 2 at $DIR/issue-76997-inline-scopes-parenting.rs:5:27: 5:28
+        _0 = const ();                   // scope 3 at $DIR/issue-76997-inline-scopes-parenting.rs:5:30: 5:31
+        StorageDead(_5);                 // scope 2 at $DIR/issue-76997-inline-scopes-parenting.rs:5:32: 5:33
+        StorageDead(_6);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:5: 6:10
+        StorageDead(_4);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:9: 6:10
+        StorageDead(_3);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:9: 6:10
+        StorageDead(_2);                 // scope 1 at $DIR/issue-76997-inline-scopes-parenting.rs:6:9: 6:10
+        StorageDead(_1);                 // scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:7:1: 7:2
+        return;                          // scope 0 at $DIR/issue-76997-inline-scopes-parenting.rs:7:2: 7:2
+    }
+}
diff --git a/src/test/mir-opt/issue_73223.main.PreCodegen.32bit.diff b/src/test/mir-opt/issue_73223.main.PreCodegen.32bit.diff
index ac08a4512d0..82d17488782 100644
--- a/src/test/mir-opt/issue_73223.main.PreCodegen.32bit.diff
+++ b/src/test/mir-opt/issue_73223.main.PreCodegen.32bit.diff
@@ -41,6 +41,8 @@
                           let mut _23: for<'r, 's, 't0> fn(&'r core::fmt::Opaque, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _24: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _25: &&i32; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 7 {
+                          }
                       }
                       scope 8 (inlined ArgumentV1::new::<&i32>) { // at $SRC_DIR/std/src/macros.rs:LL:COL
                           debug x => _28;  // in scope 8 at $SRC_DIR/core/src/fmt/mod.rs:LL:COL
@@ -48,6 +50,8 @@
                           let mut _26: for<'r, 's, 't0> fn(&'r core::fmt::Opaque, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _27: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _28: &&i32; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 9 {
+                          }
                       }
                   }
                   scope 10 (inlined Arguments::new_v1) { // at $SRC_DIR/std/src/macros.rs:LL:COL
@@ -63,10 +67,6 @@
       scope 2 {
           debug v => _3;                   // in scope 2 at $DIR/issue-73223.rs:3:14: 3:15
       }
-      scope 7 {
-      }
-      scope 9 {
-      }
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/issue-73223.rs:2:9: 2:14
diff --git a/src/test/mir-opt/issue_73223.main.PreCodegen.64bit.diff b/src/test/mir-opt/issue_73223.main.PreCodegen.64bit.diff
index ac08a4512d0..82d17488782 100644
--- a/src/test/mir-opt/issue_73223.main.PreCodegen.64bit.diff
+++ b/src/test/mir-opt/issue_73223.main.PreCodegen.64bit.diff
@@ -41,6 +41,8 @@
                           let mut _23: for<'r, 's, 't0> fn(&'r core::fmt::Opaque, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _24: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _25: &&i32; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 7 {
+                          }
                       }
                       scope 8 (inlined ArgumentV1::new::<&i32>) { // at $SRC_DIR/std/src/macros.rs:LL:COL
                           debug x => _28;  // in scope 8 at $SRC_DIR/core/src/fmt/mod.rs:LL:COL
@@ -48,6 +50,8 @@
                           let mut _26: for<'r, 's, 't0> fn(&'r core::fmt::Opaque, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _27: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _28: &&i32; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 9 {
+                          }
                       }
                   }
                   scope 10 (inlined Arguments::new_v1) { // at $SRC_DIR/std/src/macros.rs:LL:COL
@@ -63,10 +67,6 @@
       scope 2 {
           debug v => _3;                   // in scope 2 at $DIR/issue-73223.rs:3:14: 3:15
       }
-      scope 7 {
-      }
-      scope 9 {
-      }
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/issue-73223.rs:2:9: 2:14
diff --git a/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.32bit.diff b/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.32bit.diff
index b302114fa17..f4295b278e6 100644
--- a/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.32bit.diff
+++ b/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.32bit.diff
@@ -65,6 +65,8 @@
                           let mut _47: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _48: &core::fmt::Opaque; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _49: &&i32; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 7 {
+                          }
                       }
                       scope 8 (inlined ArgumentV1::new::<&i32>) { // at $SRC_DIR/std/src/macros.rs:LL:COL
                           debug x => _42;  // in scope 8 at $SRC_DIR/core/src/fmt/mod.rs:LL:COL
@@ -73,6 +75,8 @@
                           let mut _51: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _52: &core::fmt::Opaque; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _53: &&i32; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 9 {
+                          }
                       }
                   }
                   scope 10 (inlined Arguments::new_v1) { // at $SRC_DIR/std/src/macros.rs:LL:COL
@@ -88,10 +92,6 @@
       scope 2 {
           debug v => _4;                   // in scope 2 at $DIR/issue-73223.rs:3:14: 3:15
       }
-      scope 7 {
-      }
-      scope 9 {
-      }
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/issue-73223.rs:2:9: 2:14
diff --git a/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.64bit.diff b/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.64bit.diff
index b302114fa17..f4295b278e6 100644
--- a/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.64bit.diff
+++ b/src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.64bit.diff
@@ -65,6 +65,8 @@
                           let mut _47: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _48: &core::fmt::Opaque; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _49: &&i32; // in scope 6 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 7 {
+                          }
                       }
                       scope 8 (inlined ArgumentV1::new::<&i32>) { // at $SRC_DIR/std/src/macros.rs:LL:COL
                           debug x => _42;  // in scope 8 at $SRC_DIR/core/src/fmt/mod.rs:LL:COL
@@ -73,6 +75,8 @@
                           let mut _51: for<'r, 's, 't0> fn(&'r &i32, &'s mut std::fmt::Formatter<'t0>) -> std::result::Result<(), std::fmt::Error>; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _52: &core::fmt::Opaque; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
                           let mut _53: &&i32; // in scope 8 at $SRC_DIR/std/src/macros.rs:LL:COL
+                          scope 9 {
+                          }
                       }
                   }
                   scope 10 (inlined Arguments::new_v1) { // at $SRC_DIR/std/src/macros.rs:LL:COL
@@ -88,10 +92,6 @@
       scope 2 {
           debug v => _4;                   // in scope 2 at $DIR/issue-73223.rs:3:14: 3:15
       }
-      scope 7 {
-      }
-      scope 9 {
-      }
   
       bb0: {
           StorageLive(_1);                 // scope 0 at $DIR/issue-73223.rs:2:9: 2:14