llvm-project
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1; RUN: opt %loadNPMPolly '-passes=print<polly-ast>' -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
2;
3; The minimal dependence distance of the innermost loop should be 1 instead of 250.
4; CHECK: #pragma minimal dependence distance: 1
5; CHECK: for (int c0 = 0; c0 <= 499; c0 += 1)
6; CHECK: #pragma minimal dependence distance: 1
7; CHECK: for (int c1 = 0; c1 <= 998; c1 += 1) {
8; CHECK: Stmt_bb9(c0, c1);
9; CHECK: Stmt_bb9_b(c0, c1);
10;
11; void foo (int *A, int *B) {
12; for (int i=0; i < 500; i++) {
13; for (int j=0; j < 1000; j++) {
14; B[i] = B[i] + 1;
15; A[j] += A[j % 250];
16; }
17; }
18; }
19;
20target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
21
22define void @foo(ptr nocapture %arg, ptr nocapture %arg1) {
23bb:
24br label %bb2
25
26bb2: ; preds = %bb
27br label %bb4
28
29bb3: ; preds = %bb6
30ret void
31
32bb4: ; preds = %bb6, %bb2
33%tmp = phi i32 [ 0, %bb2 ], [ %tmp7, %bb6 ]
34%tmp5 = getelementptr inbounds i32, ptr %arg1, i32 %tmp
35br label %bb9
36
37bb6: ; preds = %bb9
38%tmp7 = add nuw nsw i32 %tmp, 1
39%tmp8 = icmp eq i32 %tmp7, 500
40br i1 %tmp8, label %bb3, label %bb4
41
42bb9: ; preds = %bb9, %bb4
43%tmp10 = phi i32 [ 1, %bb4 ], [ %tmp19, %bb9 ]
44%tmp11 = load i32, ptr %tmp5, align 4
45%tmp12 = add nsw i32 %tmp11, 1
46store i32 %tmp12, ptr %tmp5, align 4
47%tmp13 = urem i32 %tmp10, 250
48%tmp14 = getelementptr inbounds i32, ptr %arg, i32 %tmp13
49%tmp15 = load i32, ptr %tmp14, align 4
50%tmp16 = getelementptr inbounds i32, ptr %arg, i32 %tmp10
51%tmp17 = load i32, ptr %tmp16, align 4
52%tmp18 = add nsw i32 %tmp17, %tmp15
53store i32 %tmp18, ptr %tmp16, align 4
54%tmp19 = add nuw nsw i32 %tmp10, 1
55%tmp20 = icmp eq i32 %tmp19, 1000
56br i1 %tmp20, label %bb6, label %bb9
57}
58