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