1; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-simplify -analyze < %s | FileCheck -match-full-lines %s
2; RUN: opt %loadPolly -polly-stmt-granularity=bb "-passes=scop(print<polly-simplify>)" -disable-output -aa-pipeline=basic-aa < %s | FileCheck -match-full-lines %s
3;
4; Remove a store that is overwritten by another store in the same statement.
5; Check that even multiple stores are removed.
6;
7; for (int j = 0; j < n; j += 1) {
8;   A[0] = 10.5;
9;   A[0] = 21.0;
10;   A[0] = 42.0;
11; }
12;
13define void @overwritten_3store(i32 %n, double* noalias nonnull %A) {
14entry:
15  br label %for
16
17for:
18  %j = phi i32 [0, %entry], [%j.inc, %inc]
19  %j.cmp = icmp slt i32 %j, %n
20  br i1 %j.cmp, label %body, label %exit
21
22    body:
23      store double 10.5, double* %A
24      store double 21.0, double* %A
25      store double 42.0, double* %A
26      br label %inc
27
28inc:
29  %j.inc = add nuw nsw i32 %j, 1
30  br label %for
31
32exit:
33  br label %return
34
35return:
36  ret void
37}
38
39
40; CHECK: Statistics {
41; CHECK:     Overwrites removed: 2
42; CHECK: }
43
44; CHECK:      After accesses {
45; CHECK-NEXT:     Stmt_body
46; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
47; CHECK-NEXT:                 [n] -> { Stmt_body[i0] -> MemRef_A[0] };
48; CHECK-NEXT: }
49