1; RUN: opt -passes='require<scalar-evolution>,require<aa>,loop(print-access-info)' -disable-output  < %s 2>&1 | FileCheck %s
2
3%s1 = type { [32000 x double], [32000 x double], [32000 x double] }
4
5define i32 @load_with_pointer_phi_no_runtime_checks(%s1* %data) {
6; CHECK-LABEL: load_with_pointer_phi_no_runtime_checks
7; CHECK-NEXT:  loop.header:
8; CHECK-NEXT:    Report: cannot identify array bounds
9;
10entry:
11  br label %loop.header
12
13loop.header:                                        ; preds = %loop.latch, %entry
14  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
15  %iv.next = add nuw nsw i64 %iv, 1
16  %cmp5 = icmp ult i64 %iv, 15999
17  %arrayidx = getelementptr inbounds %s1, %s1 * %data, i64 0, i32 0, i64 %iv
18  br i1 %cmp5, label %if.then, label %if.else
19
20if.then:                                          ; preds = %loop.header
21  %gep.1 = getelementptr inbounds %s1, %s1* %data, i64 0, i32 1, i64 %iv
22  br label %loop.latch
23
24if.else:                                          ; preds = %loop.header
25  %gep.2 = getelementptr inbounds %s1, %s1* %data, i64 0, i32 2, i64 %iv
26  br label %loop.latch
27
28loop.latch:                                          ; preds = %if.else, %if.then
29  %gep.2.sink = phi double* [ %gep.2, %if.else ], [ %gep.1, %if.then ]
30  %v8 = load double, double* %gep.2.sink, align 8
31  %mul16 = fmul double 3.0, %v8
32  store double %mul16, double* %arrayidx, align 8
33  %exitcond.not = icmp eq i64 %iv.next, 32000
34  br i1 %exitcond.not, label %exit, label %loop.header
35
36exit:                                             ; preds = %loop.latch
37  ret i32 10
38}
39
40define i32 @store_with_pointer_phi_no_runtime_checks(%s1* %data) {
41; CHECK-LABEL: 'store_with_pointer_phi_no_runtime_checks'
42; CHECK-NEXT:  loop.header:
43; CHECK-NEXT:    Report: cannot identify array bounds
44;
45entry:
46  br label %loop.header
47
48loop.header:                                        ; preds = %loop.latch, %entry
49  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
50  %iv.next = add nuw nsw i64 %iv, 1
51  %cmp5 = icmp ult i64 %iv, 15999
52  %arrayidx = getelementptr inbounds %s1, %s1 * %data, i64 0, i32 0, i64 %iv
53  br i1 %cmp5, label %if.then, label %if.else
54
55if.then:                                          ; preds = %loop.header
56  %gep.1 = getelementptr inbounds %s1, %s1* %data, i64 0, i32 1, i64 %iv
57  br label %loop.latch
58
59if.else:                                          ; preds = %loop.header
60  %gep.2 = getelementptr inbounds %s1, %s1* %data, i64 0, i32 2, i64 %iv
61  br label %loop.latch
62
63loop.latch:                                          ; preds = %if.else, %if.then
64  %gep.2.sink = phi double* [ %gep.2, %if.else ], [ %gep.1, %if.then ]
65  %v8 = load double, double* %arrayidx, align 8
66  %mul16 = fmul double 3.0, %v8
67  store double %mul16, double* %gep.2.sink, align 8
68  %exitcond.not = icmp eq i64 %iv.next, 32000
69  br i1 %exitcond.not, label %exit, label %loop.header
70
71exit:                                             ; preds = %loop.latch
72  ret i32 10
73}
74
75define i32 @store_with_pointer_phi_runtime_checks(double* %A, double* %B, double* %C) {
76; CHECK-LABEL: 'store_with_pointer_phi_runtime_checks'
77; CHECK-NEXT:  loop.header:
78; CHECK-NEXT:    Report: cannot identify array bounds
79;
80entry:
81  br label %loop.header
82
83loop.header:                                        ; preds = %loop.latch, %entry
84  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
85  %iv.next = add nuw nsw i64 %iv, 1
86  %cmp5 = icmp ult i64 %iv, 15999
87  %arrayidx = getelementptr inbounds double, double* %A, i64 %iv
88  br i1 %cmp5, label %if.then, label %if.else
89
90if.then:                                          ; preds = %loop.header
91  %gep.1 = getelementptr inbounds double, double* %B, i64 %iv
92  br label %loop.latch
93
94if.else:                                          ; preds = %loop.header
95  %gep.2 = getelementptr inbounds double, double* %C, i64 %iv
96  br label %loop.latch
97
98loop.latch:                                          ; preds = %if.else, %if.then
99  %gep.2.sink = phi double* [ %gep.2, %if.else ], [ %gep.1, %if.then ]
100  %v8 = load double, double* %arrayidx, align 8
101  %mul16 = fmul double 3.0, %v8
102  store double %mul16, double* %gep.2.sink, align 8
103  %exitcond.not = icmp eq i64 %iv.next, 32000
104  br i1 %exitcond.not, label %exit, label %loop.header
105
106exit:                                             ; preds = %loop.latch
107  ret i32 10
108}
109
110define i32 @load_with_pointer_phi_outside_loop(double* %A, double* %B, double* %C, i1 %c.0, i1 %c.1) {
111; CHECK-LABEL: 'load_with_pointer_phi_outside_loop'
112; CHECK-NEXT:  loop.header:
113; CHECK-NEXT:    Report: unsafe dependent memory operations in loop
114; CHECK-NEXT:    Dependences:
115; CHECK-NEXT:      Unknown:
116; CHECK-NEXT:          %v8 = load double, double* %ptr, align 8 ->
117; CHECK-NEXT:          store double %mul16, double* %arrayidx, align 8
118;
119entry:
120  br i1 %c.0, label %if.then, label %if.else
121
122if.then:
123  br label %loop.ph
124
125if.else:
126  %ptr.select = select i1 %c.1, double* %C, double* %B
127  br label %loop.ph
128
129loop.ph:
130  %ptr = phi double* [ %A, %if.then ], [ %ptr.select, %if.else ]
131  br label %loop.header
132
133loop.header:                                        ; preds = %loop.latch, %entry
134  %iv = phi i64 [ 0, %loop.ph ], [ %iv.next, %loop.header ]
135  %iv.next = add nuw nsw i64 %iv, 1
136  %arrayidx = getelementptr inbounds double, double* %A, i64 %iv
137  %v8 = load double, double* %ptr, align 8
138  %mul16 = fmul double 3.0, %v8
139  store double %mul16, double* %arrayidx, align 8
140  %exitcond.not = icmp eq i64 %iv.next, 32000
141  br i1 %exitcond.not, label %exit, label %loop.header
142
143exit:                                             ; preds = %loop.latch
144  ret i32 10
145}
146
147define i32 @store_with_pointer_phi_outside_loop(double* %A, double* %B, double* %C, i1 %c.0, i1 %c.1) {
148; CHECK-LABEL: 'store_with_pointer_phi_outside_loop'
149; CHECK-NEXT:  loop.header:
150; CHECK-NEXT:    Report: unsafe dependent memory operations in loop.
151; CHECK-NEXT:    Dependences:
152; CHECK-NEXT:      Unknown:
153; CHECK-NEXT:          %v8 = load double, double* %arrayidx, align 8 ->
154; CHECK-NEXT:          store double %mul16, double* %ptr, align 8
155;
156entry:
157  br i1 %c.0, label %if.then, label %if.else
158
159if.then:
160  br label %loop.ph
161
162if.else:
163  %ptr.select = select i1 %c.1, double* %C, double* %B
164  br label %loop.ph
165
166loop.ph:
167  %ptr = phi double* [ %A, %if.then ], [ %ptr.select, %if.else ]
168  br label %loop.header
169
170loop.header:                                        ; preds = %loop.latch, %entry
171  %iv = phi i64 [ 0, %loop.ph ], [ %iv.next, %loop.header ]
172  %iv.next = add nuw nsw i64 %iv, 1
173  %arrayidx = getelementptr inbounds double, double* %A, i64 %iv
174  %v8 = load double, double* %arrayidx, align 8
175  %mul16 = fmul double 3.0, %v8
176  store double %mul16, double* %ptr, align 8
177  %exitcond.not = icmp eq i64 %iv.next, 32000
178  br i1 %exitcond.not, label %exit, label %loop.header
179
180exit:                                             ; preds = %loop.latch
181  ret i32 10
182}
183