1; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-delicm-partial-writes=true -polly-delicm -analyze < %s | FileCheck -match-full-lines %s
2;
3; Map %add and %phi to A[j].
4; The non-analyzable store to C[0] is unrelated and can be ignored.
5;
6;    void func(double *A) {
7;      for (int j = 0; j < 2; j += 1) { /* outer */
8;        double phi = 0.0;
9;        for (int i = 0; i < 4; i += 1) { /* reduction */
10;          phi += 4.2;
11;          C[0] = 21.0;
12;          C[0] = 42.0;
13;        }
14;        A[j] = phi;
15;      }
16;    }
17;
18define void @func(double* noalias nonnull %A, double* noalias nonnull %C) {
19entry:
20  br label %outer.for
21
22outer.for:
23  %j = phi i32 [0, %entry], [%j.inc, %outer.inc]
24  %j.cmp = icmp slt i32 %j, 2
25  br i1 %j.cmp, label %reduction.for, label %outer.exit
26
27
28    reduction.for:
29      %i = phi i32 [0, %outer.for], [%i.inc, %reduction.inc]
30      %phi = phi double [0.0, %outer.for], [%add, %reduction.inc]
31      %i.cmp = icmp slt i32 %i, 4
32      br i1 %i.cmp, label %body, label %reduction.exit
33
34
35
36        body:
37          %add = fadd double %phi, 4.2
38          store double 21.0, double* %C
39          store double 41.0, double* %C
40          br label %reduction.inc
41
42
43
44    reduction.inc:
45      %i.inc = add nuw nsw i32 %i, 1
46      br label %reduction.for
47
48    reduction.exit:
49      %A_idx = getelementptr inbounds double, double* %A, i32 %j
50      store double %phi, double* %A_idx
51      br label %outer.inc
52
53
54
55outer.inc:
56  %j.inc = add nuw nsw i32 %j, 1
57  br label %outer.for
58
59outer.exit:
60  br label %return
61
62return:
63  ret void
64}
65
66
67; CHECK:      After accesses {
68; CHECK-NEXT:     Stmt_outer_for
69; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
70; CHECK-NEXT:                 { Stmt_outer_for[i0] -> MemRef_phi__phi[] };
71; CHECK-NEXT:            new: { Stmt_outer_for[i0] -> MemRef_A[i0] : i0 <= 1 };
72; CHECK-NEXT:     Stmt_reduction_for
73; CHECK-NEXT:             ReadAccess :=       [Reduction Type: NONE] [Scalar: 1]
74; CHECK-NEXT:                 { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };
75; CHECK-NEXT:            new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };
76; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
77; CHECK-NEXT:                 { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };
78; CHECK-NEXT:            new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };
79; CHECK-NEXT:     Stmt_body
80; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
81; CHECK-NEXT:                 { Stmt_body[i0, i1] -> MemRef_add[] };
82; CHECK-NEXT:            new: { Stmt_body[i0, i1] -> MemRef_A[i0] };
83; CHECK-NEXT:             ReadAccess :=       [Reduction Type: NONE] [Scalar: 1]
84; CHECK-NEXT:                 { Stmt_body[i0, i1] -> MemRef_phi[] };
85; CHECK-NEXT:            new: { Stmt_body[i0, i1] -> MemRef_A[i0] };
86; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
87; CHECK-NEXT:                 { Stmt_body[i0, i1] -> MemRef_C[0] };
88; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
89; CHECK-NEXT:                 { Stmt_body[i0, i1] -> MemRef_C[0] };
90; CHECK-NEXT:     Stmt_reduction_inc
91; CHECK-NEXT:             ReadAccess :=       [Reduction Type: NONE] [Scalar: 1]
92; CHECK-NEXT:                 { Stmt_reduction_inc[i0, i1] -> MemRef_add[] };
93; CHECK-NEXT:            new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };
94; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
95; CHECK-NEXT:                 { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };
96; CHECK-NEXT:            new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };
97; CHECK-NEXT:     Stmt_reduction_exit
98; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
99; CHECK-NEXT:                 { Stmt_reduction_exit[i0] -> MemRef_A[i0] };
100; CHECK-NEXT:             ReadAccess :=       [Reduction Type: NONE] [Scalar: 1]
101; CHECK-NEXT:                 { Stmt_reduction_exit[i0] -> MemRef_phi[] };
102; CHECK-NEXT:            new: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };
103; CHECK-NEXT: }
104