1; RUN: opt < %s -lowerswitch -S | FileCheck %s
2;
3; The switch is lowered with a single icmp.
4; CHECK: icmp
5; CHECK-NOT: icmp
6;
7;int foo(int a) {
8;
9;  switch (a) {
10;  case 0:
11;    return 10;
12;  case 1:
13;    return 3;
14;  default:
15;    __builtin_unreachable();
16;  }
17;
18;}
19
20define i32 @foo(i32 %a) {
21  %1 = alloca i32, align 4
22  %2 = alloca i32, align 4
23  store i32 %a, i32* %2, align 4
24  %3 = load i32, i32* %2, align 4
25  switch i32 %3, label %6 [
26    i32 0, label %4
27    i32 1, label %5
28  ]
29
30; <label>:4
31  store i32 10, i32* %1
32  br label %7
33
34; <label>:5
35  store i32 3, i32* %1
36  br label %7
37
38; <label>:6
39  unreachable
40
41; <label>:7
42  %8 = load i32, i32* %1
43  ret i32 %8
44}
45