1 files changed, 46 insertions, 0 deletions
diff --git a/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff b/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
new file mode 100644
index 00000000000..bb1de59d4a7
--- /dev/null
+++ b/tests/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
@@ -0,0 +1,46 @@
+- // MIR for `change_loop_body` before ConstProp
++ // MIR for `change_loop_body` after ConstProp
+  
+  fn change_loop_body() -> () {
+      let mut _0: ();                      // return place in scope 0 at $DIR/while_let_loops.rs:+0:27: +0:27
+      let mut _1: i32;                     // in scope 0 at $DIR/while_let_loops.rs:+1:9: +1:15
+      let mut _2: std::option::Option<u32>; // in scope 0 at $DIR/while_let_loops.rs:+2:28: +2:32
+      let mut _3: isize;                   // in scope 0 at $DIR/while_let_loops.rs:+2:15: +2:25
+      scope 1 {
+          debug _x => _1;                  // in scope 1 at $DIR/while_let_loops.rs:+1:9: +1:15
+          scope 2 {
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);                 // scope 0 at $DIR/while_let_loops.rs:+1:9: +1:15
+          _1 = const 0_i32;                // scope 0 at $DIR/while_let_loops.rs:+1:18: +1:19
+          StorageLive(_2);                 // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+          Deinit(_2);                      // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+          discriminant(_2) = 0;            // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+-         _3 = discriminant(_2);           // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+-         switchInt(move _3) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
++         _3 = const 0_isize;              // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
++         switchInt(const 0_isize) -> [1: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+      }
+  
+      bb1: {
+          switchInt(((_2 as Some).0: u32)) -> [0: bb2, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+      }
+  
+      bb2: {
+          _1 = const 1_i32;                // scope 2 at $DIR/while_let_loops.rs:+3:9: +3:15
+          goto -> bb4;                     // scope 2 at $DIR/while_let_loops.rs:+4:9: +4:14
+      }
+  
+      bb3: {
+          goto -> bb4;                     // scope 1 at no-location
+      }
+  
+      bb4: {
+          StorageDead(_2);                 // scope 1 at $DIR/while_let_loops.rs:+5:5: +5:6
+          StorageDead(_1);                 // scope 0 at $DIR/while_let_loops.rs:+6:1: +6:2
+          return;                          // scope 0 at $DIR/while_let_loops.rs:+6:2: +6:2
+      }
+  }
+