1; RUN: opt < %s -disable-output -passes="print<da>" 2>&1 | FileCheck %s
2; RUN: opt < %s -da -analyze -enable-new-pm=0 | FileCheck %s
3
4; Note: exact results can be achived even if
5; "-da-disable-delinearization-checks" is not used
6
7; CHECK-LABEL: t1
8; CHECK: da analyze - none!
9; CHECK: da analyze - consistent anti [1 -2]!
10; CHECK: da analyze - none!
11
12;; #define N 1024
13;; #define M 2048
14;; void t1(int a[N][M]) {
15;;   for (int i = 0; i < N-1; ++i)
16;;     for (int j = 2; j < M; ++j)
17;;       a[i][j] = a[i+1][j-2];
18;; }
19
20define void @t1([2048 x i32]* %a) {
21entry:
22  br label %for.body
23
24for.body:                                         ; preds = %entry, %for.inc11
25  %indvars.iv4 = phi i64 [ 0, %entry ], [ %indvars.iv.next5, %for.inc11 ]
26  br label %for.body4
27
28for.body4:                                        ; preds = %for.body, %for.body4
29  %indvars.iv = phi i64 [ 2, %for.body ], [ %indvars.iv.next, %for.body4 ]
30  %0 = add nuw nsw i64 %indvars.iv4, 1
31  %1 = add nsw i64 %indvars.iv, -2
32  %arrayidx6 = getelementptr inbounds [2048 x i32], [2048 x i32]* %a, i64 %0, i64 %1
33  %2 = load i32, i32* %arrayidx6, align 4
34  %arrayidx10 = getelementptr inbounds [2048 x i32], [2048 x i32]* %a, i64 %indvars.iv4, i64 %indvars.iv
35  store i32 %2, i32* %arrayidx10, align 4
36  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
37  %exitcond = icmp ne i64 %indvars.iv.next, 2048
38  br i1 %exitcond, label %for.body4, label %for.inc11
39
40for.inc11:                                        ; preds = %for.body4
41  %indvars.iv.next5 = add nuw nsw i64 %indvars.iv4, 1
42  %exitcond7 = icmp ne i64 %indvars.iv.next5, 1023
43  br i1 %exitcond7, label %for.body, label %for.end13
44
45for.end13:                                        ; preds = %for.inc11
46  ret void
47}
48
49
50; CHECK-LABEL: t2
51; CHECK: da analyze - none!
52; CHECK: da analyze - consistent anti [1 -2 0 -3 2]!
53; CHECK: da analyze - none!
54
55;; #define N 1024
56;; #define M 2048
57;; void t2(int a[][N][N][N][M]) {
58;;   for (int i1 = 0; i1 < N-1; ++i1)
59;;     for (int i2 = 2; i2 < N; ++i2)
60;;       for (int i3 = 0; i3 < N; ++i3)
61;;         for (int i4 = 3; i4 < N; ++i4)
62;;           for (int i5 = 0; i5 < M-2; ++i5)
63;;             a[i1][i2][i3][i4][i5] = a[i1+1][i2-2][i3][i4-3][i5+2];
64;; }
65
66define void @t2([1024 x [1024 x [1024 x [2048 x i32]]]]* %a) {
67entry:
68  br label %for.body
69
70for.body:                                         ; preds = %entry, %for.inc46
71  %indvars.iv18 = phi i64 [ 0, %entry ], [ %indvars.iv.next19, %for.inc46 ]
72  br label %for.body4
73
74for.body4:                                        ; preds = %for.body, %for.inc43
75  %indvars.iv14 = phi i64 [ 2, %for.body ], [ %indvars.iv.next15, %for.inc43 ]
76  br label %for.body8
77
78for.body8:                                        ; preds = %for.body4, %for.inc40
79  %indvars.iv11 = phi i64 [ 0, %for.body4 ], [ %indvars.iv.next12, %for.inc40 ]
80  br label %for.body12
81
82for.body12:                                       ; preds = %for.body8, %for.inc37
83  %indvars.iv7 = phi i64 [ 3, %for.body8 ], [ %indvars.iv.next8, %for.inc37 ]
84  br label %for.body16
85
86for.body16:                                       ; preds = %for.body12, %for.body16
87  %indvars.iv = phi i64 [ 0, %for.body12 ], [ %indvars.iv.next, %for.body16 ]
88  %0 = add nuw nsw i64 %indvars.iv18, 1
89  %1 = add nsw i64 %indvars.iv14, -2
90  %2 = add nsw i64 %indvars.iv7, -3
91  %3 = add nuw nsw i64 %indvars.iv, 2
92  %arrayidx26 = getelementptr inbounds [1024 x [1024 x [1024 x [2048 x i32]]]], [1024 x [1024 x [1024 x [2048 x i32]]]]* %a, i64 %0, i64 %1, i64 %indvars.iv11, i64 %2, i64 %3
93  %4 = load i32, i32* %arrayidx26, align 4
94  %arrayidx36 = getelementptr inbounds [1024 x [1024 x [1024 x [2048 x i32]]]], [1024 x [1024 x [1024 x [2048 x i32]]]]* %a, i64 %indvars.iv18, i64 %indvars.iv14, i64 %indvars.iv11, i64 %indvars.iv7, i64 %indvars.iv
95  store i32 %4, i32* %arrayidx36, align 4
96  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
97  %exitcond = icmp ne i64 %indvars.iv.next, 2046
98  br i1 %exitcond, label %for.body16, label %for.inc37
99
100for.inc37:                                        ; preds = %for.body16
101  %indvars.iv.next8 = add nuw nsw i64 %indvars.iv7, 1
102  %exitcond10 = icmp ne i64 %indvars.iv.next8, 1024
103  br i1 %exitcond10, label %for.body12, label %for.inc40
104
105for.inc40:                                        ; preds = %for.inc37
106  %indvars.iv.next12 = add nuw nsw i64 %indvars.iv11, 1
107  %exitcond13 = icmp ne i64 %indvars.iv.next12, 1024
108  br i1 %exitcond13, label %for.body8, label %for.inc43
109
110for.inc43:                                        ; preds = %for.inc40
111  %indvars.iv.next15 = add nuw nsw i64 %indvars.iv14, 1
112  %exitcond17 = icmp ne i64 %indvars.iv.next15, 1024
113  br i1 %exitcond17, label %for.body4, label %for.inc46
114
115for.inc46:                                        ; preds = %for.inc43
116  %indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
117  %exitcond21 = icmp ne i64 %indvars.iv.next19, 1023
118  br i1 %exitcond21, label %for.body, label %for.end48
119
120for.end48:                                        ; preds = %for.inc46
121  ret void
122}
123