src/test/codegen/match.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

// compile-flags: -C no-prepopulate-passes

#![crate_type = "lib"]

pub enum E {
    A,
    B,
}

// CHECK-LABEL: @exhaustive_match
#[no_mangle]
pub fn exhaustive_match(e: E, unit: ()) {
// CHECK: switch{{.*}}, label %[[OTHERWISE:[a-zA-Z0-9_]+]] [
// CHECK-NEXT: i[[TY:[0-9]+]] [[DISCR:[0-9]+]], label %[[A:[a-zA-Z0-9_]+]]
// CHECK-NEXT: i[[TY:[0-9]+]] [[DISCR:[0-9]+]], label %[[B:[a-zA-Z0-9_]+]]
// CHECK-NEXT: ]
// CHECK: [[B]]:
// CHECK-NEXT: br label %[[EXIT:[a-zA-Z0-9_]+]]
// CHECK: [[OTHERWISE]]:
// CHECK-NEXT: unreachable
// CHECK: [[A]]:
// CHECK-NEXT: br label %[[EXIT:[a-zA-Z0-9_]+]]
    match e {
        E::A => unit,
        E::B => unit,
    }
}