1 ; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
3 ; We have privatization dependences from a textually later statement to a
4 ; textually earlier one, but the dependences still go forward in time.
6 ; CHECK: RAW dependences:
7 ; CHECK-NEXT: { Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : 0 <= i0 <= 97 and 0 <= o1 <= 99; Stmt_S1[i0] -> Stmt_S3[i0] : 0 <= i0 <= 98 }
8 ; CHECK-NEXT: WAR dependences:
9 ; CHECK-NEXT: { Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : 0 <= i0 <= 97 and 0 <= o1 <= 99; Stmt_S1[i0] -> Stmt_S3[i0] : 0 <= i0 <= 98 }
10 ; CHECK-NEXT: WAW dependences:
11 ; CHECK-NEXT: { Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : 0 <= i0 <= 97 and 0 <= o1 <= 99; Stmt_S1[i0] -> Stmt_S3[i0] : 0 <= i0 <= 98 }
12 ; CHECK-NEXT: Reduction dependences:
13 ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S2[i0, 1 + i1] : 0 <= i0 <= 98 and 0 <= i1 <= 98 }
17 ; for (i = 0; i < 99; i++) {
18 ; S1: sum[i + 1] += 42;
19 ; for (j = 0; j < 100; j++)
20 ; S2: sum[i] += i * j;
21 ; S3: sum[i + 1] += 7;
25 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
27 define void @f(i32* %sum) {
31 for.cond: ; preds = %for.inc10, %entry
32 %i.0 = phi i32 [ 0, %entry ], [ %inc11, %for.inc10 ]
33 %exitcond1 = icmp ne i32 %i.0, 99
34 br i1 %exitcond1, label %for.body, label %for.end12
36 for.body: ; preds = %for.cond
39 S1: ; preds = %for.body
40 %add = add nsw i32 %i.0, 1
41 %arrayidx = getelementptr inbounds i32, i32* %sum, i32 %add
42 %tmp = load i32, i32* %arrayidx, align 4
43 %add1 = add nsw i32 %tmp, 42
44 store i32 %add1, i32* %arrayidx, align 4
47 for.cond2: ; preds = %for.inc, %S1
48 %j.0 = phi i32 [ 0, %S1 ], [ %inc, %for.inc ]
49 %exitcond = icmp ne i32 %j.0, 100
50 br i1 %exitcond, label %for.body4, label %for.end
52 for.body4: ; preds = %for.cond2
55 S2: ; preds = %for.body4
56 %mul = mul nsw i32 %i.0, %j.0
57 %arrayidx5 = getelementptr inbounds i32, i32* %sum, i32 %i.0
58 %tmp2 = load i32, i32* %arrayidx5, align 4
59 %add6 = add nsw i32 %tmp2, %mul
60 store i32 %add6, i32* %arrayidx5, align 4
63 for.inc: ; preds = %S2
64 %inc = add nsw i32 %j.0, 1
67 for.end: ; preds = %for.cond2
70 S3: ; preds = %for.end
71 %add7 = add nsw i32 %i.0, 1
72 %arrayidx8 = getelementptr inbounds i32, i32* %sum, i32 %add7
73 %tmp3 = load i32, i32* %arrayidx8, align 4
74 %add9 = add nsw i32 %tmp3, 7
75 store i32 %add9, i32* %arrayidx8, align 4
78 for.inc10: ; preds = %S3
79 %inc11 = add nsw i32 %i.0, 1
82 for.end12: ; preds = %for.cond