1; RUN: opt %loadPolly -basic-aa -polly-stmt-granularity=bb -polly-scops -analyze -polly-allow-modref-calls \
2; RUN:  < %s | FileCheck %s
3; RUN: opt %loadPolly -basic-aa -polly-stmt-granularity=bb -polly-codegen -polly-allow-modref-calls \
4; RUN: -disable-output < %s
5;
6; Verify that we model the may-write access of the prefetch intrinsic
7; correctly, thus that A is accessed by it but B is not.
8;
9; CHECK:      Stmt_for_body
10; CHECK-NEXT:   Domain :=
11; CHECK-NEXT:       { Stmt_for_body[i0] : 0 <= i0 <= 1023 };
12; CHECK-NEXT:   Schedule :=
13; CHECK-NEXT:       { Stmt_for_body[i0] -> [i0] };
14; CHECK-NEXT:   MayWriteAccess := [Reduction Type: NONE]
15; CHECK-NEXT:       { Stmt_for_body[i0] -> MemRef_A[o0] };
16; CHECK-NEXT:   ReadAccess := [Reduction Type: NONE]
17; CHECK-NEXT:       { Stmt_for_body[i0] -> MemRef_B[i0] };
18; CHECK-NEXT:   MustWriteAccess :=  [Reduction Type: NONE]
19; CHECK-NEXT:       { Stmt_for_body[i0] -> MemRef_A[i0] };
20;
21;    void jd(int *restirct A, int *restrict B) {
22;      for (int i = 0; i < 1024; i++) {
23;        @llvm.prefetch(A);
24;        A[i] = B[i];
25;      }
26;    }
27;
28target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
29
30define void @jd(i32* noalias %A, i32* noalias %B) {
31entry:
32  br label %for.body
33
34for.body:                                         ; preds = %entry, %for.inc
35  %i = phi i64 [ 0, %entry ], [ %i.next, %for.inc ]
36  %arrayidx = getelementptr inbounds i32, i32* %A, i64 %i
37  %arrayidx1 = getelementptr inbounds i32, i32* %B, i64 %i
38  %bc = bitcast i32* %arrayidx to i8*
39  call void @f(i8* %bc, i32 1, i32 1, i32 1)
40  %tmp = load i32, i32* %arrayidx1
41  store i32 %tmp, i32* %arrayidx, align 4
42  br label %for.inc
43
44for.inc:                                          ; preds = %for.body
45  %i.next = add nuw nsw i64 %i, 1
46  %exitcond = icmp ne i64 %i.next, 1024
47  br i1 %exitcond, label %for.body, label %for.end
48
49for.end:                                          ; preds = %for.inc
50  ret void
51}
52
53declare void @f(i8*, i32, i32, i32) #0
54
55attributes #0 = { argmemonly nounwind }
56