1; RUN: opt < %s -basicaa -gvn  -S | FileCheck %s
2
3; PR15967
4; BasicAA claims no alias when there is (due to a problem when the MaxLookup
5; limit was reached).
6
7target datalayout = "e"
8
9%struct.foo = type { i32, i32 }
10
11define i32 @main() {
12  %t = alloca %struct.foo, align 4
13  %1 = getelementptr inbounds %struct.foo, %struct.foo* %t, i32 0, i32 0
14  store i32 1, i32* %1, align 4
15  %2 = getelementptr inbounds %struct.foo, %struct.foo* %t, i64 1
16  %3 = bitcast %struct.foo* %2 to i8*
17  %4 = getelementptr inbounds i8, i8* %3, i32 -1
18  store i8 0, i8* %4
19  %5 = getelementptr inbounds i8, i8* %4, i32 -1
20  store i8 0, i8* %5
21  %6 = getelementptr inbounds i8, i8* %5, i32 -1
22  store i8 0, i8* %6
23  %7 = getelementptr inbounds i8, i8* %6, i32 -1
24  store i8 0, i8* %7
25  %8 = getelementptr inbounds i8, i8* %7, i32 -1
26  store i8 0, i8* %8
27  %9 = getelementptr inbounds i8, i8* %8, i32 -1
28  store i8 0, i8* %9
29  %10 = getelementptr inbounds i8, i8* %9, i32 -1
30  store i8 0, i8* %10
31  %11 = getelementptr inbounds i8, i8* %10, i32 -1
32  store i8 0, i8* %11
33  %12 = load i32, i32* %1, align 4
34  ret i32 %12
35; CHECK: ret i32 %12
36}
37