Implement JumpThreading pass.

1 files changed, 53 insertions, 0 deletions

diff --git a/tests/mir-opt/jump_threading.renumbered_bb.JumpThreading.panic-unwind.diff b/tests/mir-opt/jump_threading.renumbered_bb.JumpThreading.panic-unwind.diff
new file mode 100644
index 00000000000..20f6861e8db
--- /dev/null
+++ b/tests/mir-opt/jump_threading.renumbered_bb.JumpThreading.panic-unwind.diff
@@ -0,0 +1,53 @@
+- // MIR for `renumbered_bb` before JumpThreading
++ // MIR for `renumbered_bb` after JumpThreading
+  
+  fn renumbered_bb(_1: bool) -> u8 {
+      let mut _0: u8;
+      let mut _2: bool;
+      let mut _3: bool;
+  
+      bb0: {
+          _3 = const false;
+          switchInt(_1) -> [1: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          _2 = const false;
+-         goto -> bb3;
++         goto -> bb8;
+      }
+  
+      bb2: {
+          _2 = _1;
+          _3 = _1;
+          goto -> bb3;
+      }
+  
+      bb3: {
+          switchInt(_2) -> [0: bb4, otherwise: bb5];
+      }
+  
+      bb4: {
+          switchInt(_3) -> [0: bb6, otherwise: bb7];
+      }
+  
+      bb5: {
+          _0 = const 7_u8;
+          return;
+      }
+  
+      bb6: {
+          _0 = const 9_u8;
+          return;
+      }
+  
+      bb7: {
+          _0 = const 11_u8;
+          return;
++     }
++ 
++     bb8: {
++         goto -> bb4;
+      }
+  }
+