1; RUN: opt < %s -analyze -basicaa -da | FileCheck %s
2
3; ModuleID = 'ZIV.bc'
4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
5target triple = "x86_64-apple-macosx10.6.0"
6
7
8;;  A[n + 1] = 0;
9;;  *B = A[1 + n];
10
11define void @z0(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
12entry:
13  %add = add i64 %n, 1
14  %arrayidx = getelementptr inbounds i32* %A, i64 %add
15  store i32 0, i32* %arrayidx, align 4
16
17; CHECK: da analyze - none!
18; CHECK: da analyze - consistent flow [|<]!
19; CHECK: da analyze - confused!
20; CHECK: da analyze - none!
21; CHECK: da analyze - confused!
22; CHECK: da analyze - none!
23
24  %add1 = add i64 %n, 1
25  %arrayidx2 = getelementptr inbounds i32* %A, i64 %add1
26  %0 = load i32* %arrayidx2, align 4
27  store i32 %0, i32* %B, align 4
28  ret void
29}
30
31
32;;  A[n] = 0;
33;;  *B = A[n + 1];
34
35define void @z1(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
36entry:
37  %arrayidx = getelementptr inbounds i32* %A, i64 %n
38  store i32 0, i32* %arrayidx, align 4
39
40; CHECK: da analyze - none!
41; CHECK: da analyze - none!
42; CHECK: da analyze - confused!
43; CHECK: da analyze - none!
44; CHECK: da analyze - confused!
45; CHECK: da analyze - none!
46
47  %add = add i64 %n, 1
48  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
49  %0 = load i32* %arrayidx1, align 4
50  store i32 %0, i32* %B, align 4
51  ret void
52}
53
54
55;;  A[n] = 0;
56;;  *B = A[m];
57
58define void @z2(i32* %A, i32* %B, i64 %n, i64 %m) nounwind uwtable ssp {
59entry:
60  %arrayidx = getelementptr inbounds i32* %A, i64 %n
61  store i32 0, i32* %arrayidx, align 4
62
63; CHECK: da analyze - none!
64; CHECK: da analyze - flow [|<]!
65; CHECK: da analyze - confused!
66; CHECK: da analyze - none!
67; CHECK: da analyze - confused!
68; CHECK: da analyze - none!
69
70  %arrayidx1 = getelementptr inbounds i32* %A, i64 %m
71  %0 = load i32* %arrayidx1, align 4
72  store i32 %0, i32* %B, align 4
73  ret void
74}
75