1; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
2;
3; CHECK:      RAW dependences:
4; CHECK-NEXT:     { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 }
5; CHECK-NEXT: WAR dependences:
6; CHECK-NEXT:   { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 }
7; CHECK-NEXT: WAW dependences:
8; CHECK-NEXT:     { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 }
9; CHECK-NEXT: Reduction dependences:
10; CHECK-NEXT:     { Stmt_S2[i0, i1] -> Stmt_S2[1 + i0, i1] : 0 <= i0 <= 97 and i1 >= 0 and 2 - i0 <= i1 <= 98 - i0; Stmt_S2[0, 0] -> Stmt_S2[1, 0] }
11;
12;    void f(int *sum) {
13;      int i, j;
14;      for (i = 0; i < 99; i++) {
15; S1:    sum[i + 1] += 42;
16;        for (j = i; j < 100; j++)
17; S2:      sum[i - j] += i * j;
18; S3:    sum[i - 1] += 7;
19;      }
20;    }
21;
22target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
23
24define void @f(i32* %sum)  {
25entry:
26  br label %for.cond
27
28for.cond:                                         ; preds = %for.inc10, %entry
29  %i.0 = phi i32 [ 0, %entry ], [ %inc11, %for.inc10 ]
30  %exitcond1 = icmp ne i32 %i.0, 99
31  br i1 %exitcond1, label %for.body, label %for.end12
32
33for.body:                                         ; preds = %for.cond
34  br label %S1
35
36S1:                                               ; preds = %for.body
37  %add = add nsw i32 %i.0, 1
38  %arrayidx = getelementptr inbounds i32, i32* %sum, i32 %add
39  %tmp = load i32, i32* %arrayidx, align 4
40  %add1 = add nsw i32 %tmp, 42
41  store i32 %add1, i32* %arrayidx, align 4
42  br label %for.cond2
43
44for.cond2:                                        ; preds = %for.inc, %S1
45  %j.0 = phi i32 [ %i.0, %S1 ], [ %inc, %for.inc ]
46  %exitcond = icmp ne i32 %j.0, 100
47  br i1 %exitcond, label %for.body4, label %for.end
48
49for.body4:                                        ; preds = %for.cond2
50  br label %S2
51
52S2:                                               ; preds = %for.body4
53  %mul = mul nsw i32 %i.0, %j.0
54  %sub = sub nsw i32 %i.0, %j.0
55  %arrayidx5 = getelementptr inbounds i32, i32* %sum, i32 %sub
56  %tmp2 = load i32, i32* %arrayidx5, align 4
57  %add6 = add nsw i32 %tmp2, %mul
58  store i32 %add6, i32* %arrayidx5, align 4
59  br label %for.inc
60
61for.inc:                                          ; preds = %S2
62  %inc = add nsw i32 %j.0, 1
63  br label %for.cond2
64
65for.end:                                          ; preds = %for.cond2
66  br label %S3
67
68S3:                                               ; preds = %for.end
69  %sub7 = add nsw i32 %i.0, -1
70  %arrayidx8 = getelementptr inbounds i32, i32* %sum, i32 %sub7
71  %tmp3 = load i32, i32* %arrayidx8, align 4
72  %add9 = add nsw i32 %tmp3, 7
73  store i32 %add9, i32* %arrayidx8, align 4
74  br label %for.inc10
75
76for.inc10:                                        ; preds = %S3
77  %inc11 = add nsw i32 %i.0, 1
78  br label %for.cond
79
80for.end12:                                        ; preds = %for.cond
81  ret void
82}
83