1 files changed, 55 insertions, 0 deletions
diff --git a/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff b/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
new file mode 100644
index 00000000000..eef7011149d
--- /dev/null
+++ b/src/test/mir-opt/while_let_loops.change_loop_body.ConstProp.diff
@@ -0,0 +1,55 @@
+- // 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: ();                      // in scope 0 at $DIR/while_let_loops.rs:+0:1: +6:2
+      let mut _3: std::option::Option<u32>; // in scope 0 at $DIR/while_let_loops.rs:+2:28: +2:32
+      let mut _4: isize;                   // in scope 0 at $DIR/while_let_loops.rs:+2:15: +2:25
+      let mut _5: !;                       // in scope 0 at $DIR/while_let_loops.rs:+2:33: +5:6
+      let mut _6: !;                       // in scope 0 at $DIR/while_let_loops.rs:+2:5: +5:6
+      let _7: ();                          // in scope 0 at $DIR/while_let_loops.rs:+2:5: +5:6
+      let mut _8: !;                       // in scope 0 at $DIR/while_let_loops.rs:+2:5: +5:6
+      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(_3);                 // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+          Deinit(_3);                      // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+          discriminant(_3) = 0;            // scope 2 at $DIR/while_let_loops.rs:+2:28: +2:32
+-         _4 = discriminant(_3);           // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+-         switchInt(move _4) -> [1_isize: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
++         _4 = const 0_isize;              // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
++         switchInt(const 0_isize) -> [1_isize: bb1, otherwise: bb3]; // scope 2 at $DIR/while_let_loops.rs:+2:15: +2:25
+      }
+  
+      bb1: {
+          switchInt(((_3 as Some).0: u32)) -> [0_u32: 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
+          nop;                             // scope 2 at $DIR/while_let_loops.rs:+4:9: +4:14
+          goto -> bb4;                     // scope 2 at $DIR/while_let_loops.rs:+4:9: +4:14
+      }
+  
+      bb3: {
+          StorageLive(_7);                 // scope 1 at $DIR/while_let_loops.rs:+2:5: +5:6
+          nop;                             // scope 1 at $DIR/while_let_loops.rs:+2:5: +5:6
+          StorageDead(_7);                 // scope 1 at $DIR/while_let_loops.rs:+5:5: +5:6
+          goto -> bb4;                     // scope 1 at no-location
+      }
+  
+      bb4: {
+          StorageDead(_3);                 // 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
+      }
+  }
+