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