[MIR trans] Add support for SwitchInt

src/test/run-pass/mir_trans_switchint.rs

@@ -0,0 +1,24 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(rustc_attrs)]
+
+#[rustc_mir]
+pub fn foo(x: i8) -> i32 {
+  match x {
+    1 => 0,
+    _ => 1,
+  }
+}
+
+fn main() {
+  assert_eq!(foo(0), 1);
+  assert_eq!(foo(1), 0);
+}