1; RUN: opt %loadPolly -basicaa -polly-scops -analyze < %s | FileCheck %s
2; RUN: opt %loadPolly -basicaa -polly-codegen -disable-output < %s
3;
4; Check that the call to func will "read" not only the A array but also the
5; B array. The reason is the readonly annotation of func.
6;
7; CHECK:      Stmt_for_body
8; CHECK-NEXT:  Domain :=
9; CHECK-NEXT:      { Stmt_for_body[i0] : 0 <= i0 <= 1023 };
10; CHECK-NEXT:  Schedule :=
11; CHECK-NEXT:      { Stmt_for_body[i0] -> [i0] };
12; CHECK-NEXT:  ReadAccess :=  [Reduction Type: NONE]
13; CHECK-NEXT:      { Stmt_for_body[i0] -> MemRef_B[i0] };
14; CHECK-NEXT:  MustWriteAccess :=  [Reduction Type: NONE]
15; CHECK-NEXT:      { Stmt_for_body[i0] -> MemRef_A[2 + i0] };
16; CHECK-DAG:   ReadAccess :=  [Reduction Type: NONE]
17; CHECK-DAG:       { Stmt_for_body[i0] -> MemRef_B[o0] };
18; CHECK-DAG:   ReadAccess :=  [Reduction Type: NONE]
19; CHECK-DAG:       { Stmt_for_body[i0] -> MemRef_A[o0] };
20;
21;    #pragma readonly
22;    int func(int *A);
23;
24;    void jd(int *restrict A, int *restrict B) {
25;      for (int i = 0; i < 1024; i++)
26;        A[i + 2] = func(A) + B[i];
27;    }
28;
29target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
30
31define void @jd(i32* noalias %A, i32* noalias %B) {
32entry:
33  br label %for.cond
34
35for.cond:                                         ; preds = %for.inc, %entry
36  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
37  %exitcond = icmp ne i64 %indvars.iv, 1024
38  br i1 %exitcond, label %for.body, label %for.end
39
40for.body:                                         ; preds = %for.cond
41  %call = call i32 @func(i32* %A)
42  %arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
43  %tmp = load i32, i32* %arrayidx, align 4
44  %add = add nsw i32 %call, %tmp
45  %tmp2 = add nsw i64 %indvars.iv, 2
46  %arrayidx3 = getelementptr inbounds i32, i32* %A, i64 %tmp2
47  store i32 %add, i32* %arrayidx3, align 4
48  br label %for.inc
49
50for.inc:                                          ; preds = %for.body
51  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
52  br label %for.cond
53
54for.end:                                          ; preds = %for.cond
55  ret void
56}
57
58declare i32 @func(i32*) #1
59
60attributes #1 = { nounwind readonly }
61