2 match { let x = false; x } {
3 true => println!("hello world!"),
9 // START rustc.main.SimplifyBranches-after-copy-prop.before.mir
12 // switchInt(const false) -> [false: bb3, otherwise: bb1];
15 // END rustc.main.SimplifyBranches-after-copy-prop.before.mir
16 // START rustc.main.SimplifyBranches-after-copy-prop.after.mir
22 // END rustc.main.SimplifyBranches-after-copy-prop.after.mir