1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes='default<O2>' -S < %s | FileCheck %s
3@a = internal global i32 0, align 4
4@c = internal global i32** @b, align 8
5@b = internal global i32* null, align 8
6@e = internal global i32* @d, align 8
7@d = internal global i32 0, align 4
8
9define i32 @main() {
10; CHECK-LABEL: @main(
11; CHECK-NEXT:  entry:
12; CHECK-NEXT:    store i1 true, i1* @a, align 4
13; CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** @e, align 8
14; CHECK-NEXT:    store i32 0, i32* [[TMP0]], align 4
15; CHECK-NEXT:    store i32* null, i32** @e, align 8
16; CHECK-NEXT:    ret i32 0
17;
18entry:
19  %h = alloca i32*, align 8
20  %i = alloca i32*, align 8
21  %j = alloca i32*, align 8
22  %0 = bitcast i32** %h to i8*
23  store i32* @a, i32** %h, align 8
24  %1 = bitcast i32** %i to i8*
25  %2 = bitcast i32** %j to i8*
26  store i32* @a, i32** %j, align 8
27  %3 = load i32*, i32** %j, align 8
28  store i32 1, i32* %3, align 4
29  store i32* @a, i32** %i, align 8
30  %4 = load i32*, i32** %i, align 8
31  %5 = load i32**, i32*** @c, align 8
32  store i32* %4, i32** %5, align 8
33  %6 = load i32*, i32** %h, align 8
34  %call = call i32* @bar(i32* %6)
35  %7 = bitcast i32** %j to i8*
36  %8 = bitcast i32** %i to i8*
37  %9 = bitcast i32** %h to i8*
38  ret i32 0
39}
40
41define internal i32* @bar(i32* %g) {
42entry:
43  %g.addr = alloca i32*, align 8
44  store i32* %g, i32** %g.addr, align 8
45  %0 = load i32*, i32** @e, align 8
46  store i32 0, i32* %0, align 4
47  %1 = load i32*, i32** %g.addr, align 8
48  %2 = load i32, i32* %1, align 4
49  %tobool = icmp ne i32 %2, 0
50  br i1 %tobool, label %if.end, label %if.then
51
52if.then:                                          ; preds = %entry
53  call void @foo()
54  br label %if.end
55
56if.end:                                           ; preds = %if.then, %entry
57  store i32* null, i32** @e, align 8
58  %3 = load i32*, i32** @b, align 8
59  ret i32* %3
60}
61
62declare void @foo()
63
64