1 ; RUN: opt < %s -basicaa -inline -instcombine -reassociate -dse -disable-output
4 @a = common global i32 0, align 4
5 @d = common global i32 0, align 4
7 define i32 @fn2() nounwind uwtable ssp {
9 %0 = load i32* @a, align 4, !tbaa !0
10 %dec = add nsw i32 %0, -1
11 store i32 %dec, i32* @a, align 4, !tbaa !0
12 %1 = load i32* @d, align 4, !tbaa !0
13 %sub = sub nsw i32 %dec, %1
14 store i32 %sub, i32* @d, align 4, !tbaa !0
15 %2 = load i32* @a, align 4, !tbaa !0
16 %dec1 = add nsw i32 %2, -1
17 store i32 %dec1, i32* @a, align 4, !tbaa !0
18 %3 = load i32* @d, align 4, !tbaa !0
19 %sub2 = sub nsw i32 %dec1, %3
20 store i32 %sub2, i32* @d, align 4, !tbaa !0
21 %4 = load i32* @a, align 4, !tbaa !0
22 %dec3 = add nsw i32 %4, -1
23 store i32 %dec3, i32* @a, align 4, !tbaa !0
24 %5 = load i32* @d, align 4, !tbaa !0
25 %sub4 = sub nsw i32 %dec3, %5
26 store i32 %sub4, i32* @d, align 4, !tbaa !0
27 %6 = load i32* @a, align 4, !tbaa !0
28 %dec5 = add nsw i32 %6, -1
29 store i32 %dec5, i32* @a, align 4, !tbaa !0
30 %7 = load i32* @d, align 4, !tbaa !0
31 %sub6 = sub nsw i32 %dec5, %7
32 store i32 %sub6, i32* @d, align 4, !tbaa !0
33 %8 = load i32* @a, align 4, !tbaa !0
34 %dec7 = add nsw i32 %8, -1
35 store i32 %dec7, i32* @a, align 4, !tbaa !0
36 %9 = load i32* @d, align 4, !tbaa !0
37 %sub8 = sub nsw i32 %dec7, %9
38 store i32 %sub8, i32* @d, align 4, !tbaa !0
42 define i32 @fn1() nounwind uwtable ssp {
44 %call = call i32 @fn2()
48 !0 = metadata !{metadata !"int", metadata !1}
49 !1 = metadata !{metadata !"omnipotent char", metadata !2}
50 !2 = metadata !{metadata !"Simple C/C++ TBAA"}