1 files changed, 42 insertions, 0 deletions
diff --git a/tests/mir-opt/pre-codegen/deref_nested_borrows.src.GVN.panic-abort.diff b/tests/mir-opt/pre-codegen/deref_nested_borrows.src.GVN.panic-abort.diff
new file mode 100644
index 00000000000..993857f225a
--- /dev/null
+++ b/tests/mir-opt/pre-codegen/deref_nested_borrows.src.GVN.panic-abort.diff
@@ -0,0 +1,42 @@
+- // MIR for `src` before GVN
++ // MIR for `src` after GVN
+  
+  fn src(_1: &&u8) -> bool {
+      debug x => _1;
+      let mut _0: bool;
+      let _2: u8;
+      let _3: ();
+      let mut _4: u8;
+      let mut _5: u8;
+      let mut _6: &u8;
+      let mut _7: &u8;
+      scope 1 {
+          debug y => _2;
+      }
+  
+      bb0: {
+-         StorageLive(_2);
+-         _6 = deref_copy (*_1);
++         nop;
++         _6 = copy (*_1);
+          _2 = copy (*_6);
+          _3 = unknown() -> [return: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+          StorageLive(_4);
+-         _7 = deref_copy (*_1);
++         _7 = copy (*_1);
+          _4 = copy (*_7);
+          StorageLive(_5);
+          _5 = copy _2;
+-         _0 = Eq(move _4, move _5);
++         _0 = Eq(move _4, copy _2);
+          StorageDead(_5);
+          StorageDead(_4);
+-         StorageDead(_2);
++         nop;
+          return;
+      }
+  }
+