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1; Test CFG simplify removal of branch instructions.
2;
3; RUN: opt < %s -simplifycfg -S | FileCheck %s
4
5define void @test1() {
6        br label %1
7        ret void
8; CHECK: @test1
9; CHECK-NEXT: ret void
10}
11
12define void @test2() {
13        ret void
14        ret void
15; CHECK: @test2
16; CHECK-NEXT: ret void
17; CHECK-NEXT: }
18}
19
20define void @test3(i1 %T) {
21        br i1 %T, label %1, label %1
22        ret void
23; CHECK: @test3
24; CHECK-NEXT: ret void
25}
26
27
28; PR5795
29define void @test5(i32 %A) {
30  switch i32 %A, label %return [
31    i32 2, label %1
32    i32 10, label %2
33  ]
34
35  ret void
36
37  ret void
38
39return:                                           ; preds = %entry
40  ret void
41; CHECK: @test5
42; CHECK-NEXT: ret void
43}
44