1; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
2;
3;
4;    void foo(long n, float A[][n]) {
5;      for (long i = 0; i < 100; i++)
6;        for (long j = 0; j < n; j++)
7;          A[i][j] += A[i][n - j - 1];
8;    }
9;
10; Verify that the parameter in the subscript expression is correctly
11; recovered.
12;
13; CHECK: Assumed Context:
14; CHECK-NEXT: [n] -> {  :  }
15;
16; CHECK: ReadAccess :=       [Reduction Type: NONE] [Scalar: 0]
17; CHECK-NEXT:   [n] -> { Stmt_for_body3[i0, i1] -> MemRef_A[i0, -1 + n - i1] };
18;
19target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
20
21define void @foo(i64 %n, float* %A) {
22entry:
23  br label %for.cond
24
25for.cond:                                         ; preds = %for.inc8, %entry
26  %i.0 = phi i64 [ 0, %entry ], [ %inc9, %for.inc8 ]
27  %exitcond = icmp ne i64 %i.0, 100
28  br i1 %exitcond, label %for.body, label %for.end10
29
30for.body:                                         ; preds = %for.cond
31  br label %for.cond1
32
33for.cond1:                                        ; preds = %for.inc, %for.body
34  %j.0 = phi i64 [ 0, %for.body ], [ %inc, %for.inc ]
35  %cmp2 = icmp slt i64 %j.0, %n
36  br i1 %cmp2, label %for.body3, label %for.end
37
38for.body3:                                        ; preds = %for.cond1
39  %sub = sub nsw i64 %n, %j.0
40  %sub4 = add nsw i64 %sub, -1
41  %tmp = mul nsw i64 %i.0, %n
42  %arrayidx.sum = add i64 %tmp, %sub4
43  %arrayidx5 = getelementptr inbounds float, float* %A, i64 %arrayidx.sum
44  %tmp1 = load float, float* %arrayidx5, align 4
45  %tmp2 = mul nsw i64 %i.0, %n
46  %arrayidx6.sum = add i64 %tmp2, %j.0
47  %arrayidx7 = getelementptr inbounds float, float* %A, i64 %arrayidx6.sum
48  %tmp3 = load float, float* %arrayidx7, align 4
49  %add = fadd float %tmp3, %tmp1
50  store float %add, float* %arrayidx7, align 4
51  br label %for.inc
52
53for.inc:                                          ; preds = %for.body3
54  %inc = add nuw nsw i64 %j.0, 1
55  br label %for.cond1
56
57for.end:                                          ; preds = %for.cond1
58  br label %for.inc8
59
60for.inc8:                                         ; preds = %for.end
61  %inc9 = add nuw nsw i64 %i.0, 1
62  br label %for.cond
63
64for.end10:                                        ; preds = %for.cond
65  ret void
66}
67