1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S < %s -aa-pipeline=basic-aa -passes='require<loops>,jump-threading' | FileCheck %s
3
4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
5target triple = "x86_64-unknown-linux-gnu"
6
7@global = external global i8*
8
9define i32 @wibble() {
10; CHECK-LABEL: @wibble(
11; CHECK-NEXT:  bb19:
12; CHECK-NEXT:    [[TMP20:%.*]] = getelementptr i8, i8* undef, i64 16
13; CHECK-NEXT:    [[TMP21:%.*]] = load atomic i8*, i8** @global unordered, align 8
14; CHECK-NEXT:    [[TMP22:%.*]] = getelementptr inbounds i8, i8* [[TMP21]], i64 936
15; CHECK-NEXT:    br label [[BB3:%.*]]
16; CHECK:       bb2:
17; CHECK-NEXT:    br label [[BB3]]
18; CHECK:       bb3:
19; CHECK-NEXT:    [[TMP:%.*]] = phi i8* [ [[TMP22]], [[BB19:%.*]] ], [ undef, [[BB2:%.*]] ]
20; CHECK-NEXT:    [[TMP4:%.*]] = phi i8* [ [[TMP21]], [[BB19]] ], [ undef, [[BB2]] ]
21; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8* [[TMP]] to i64*
22; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[TMP4]], i64 848
23; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8* [[TMP6]] to i8**
24; CHECK-NEXT:    br label [[BB11:%.*]]
25; CHECK:       bb11:
26; CHECK-NEXT:    [[TMP12:%.*]] = load atomic i8*, i8** [[TMP7]] unordered, align 8
27; CHECK-NEXT:    [[TMP13:%.*]] = icmp eq i8* [[TMP12]], null
28; CHECK-NEXT:    br i1 [[TMP13]], label [[BB17:%.*]], label [[BB16:%.*]]
29; CHECK:       bb16:
30; CHECK-NEXT:    store atomic i64 undef, i64* [[TMP5]] unordered, align 8
31; CHECK-NEXT:    br label [[BB11]]
32; CHECK:       bb17:
33; CHECK-NEXT:    ret i32 undef
34;
35bb:
36  br label %bb1
37
38bb1:                                              ; preds = %bb
39  br label %bb18
40
41bb2:                                              ; No predecessors!
42  br label %bb3
43
44bb3:                                              ; preds = %bb19, %bb2
45  %tmp = phi i8* [ %tmp22, %bb19 ], [ undef, %bb2 ]
46  %tmp4 = phi i8* [ %tmp21, %bb19 ], [ undef, %bb2 ]
47  %tmp5 = bitcast i8* %tmp to i64*
48  %tmp6 = getelementptr inbounds i8, i8* %tmp4, i64 848
49  %tmp7 = bitcast i8* %tmp6 to i8**
50  br label %bb11
51
52bb11:                                             ; preds = %bb16, %bb3
53  %tmp12 = load atomic i8*, i8** %tmp7 unordered, align 8
54  %tmp13 = icmp eq i8* %tmp12, null
55  br i1 %tmp13, label %bb17, label %bb14
56
57bb14:                                             ; preds = %bb11
58  br label %bb15
59
60bb15:                                             ; preds = %bb14
61  br label %bb16
62
63bb16:                                             ; preds = %bb15
64  store atomic i64 undef, i64* %tmp5 unordered, align 8
65  br label %bb11
66
67bb17:                                             ; preds = %bb11
68  ret i32 undef
69
70bb18:                                             ; preds = %bb1
71  br label %bb19
72
73bb19:                                             ; preds = %bb18
74  %tmp20 = getelementptr i8, i8* undef, i64 16
75  %tmp21 = load atomic i8*, i8** @global unordered, align 8
76  %tmp22 = getelementptr inbounds i8, i8* %tmp21, i64 936
77  br label %bb3
78}
79
80define void @zot(i8* align 8 dereferenceable_or_null(16) %arg, i32 %arg1) {
81; CHECK-LABEL: @zot(
82; CHECK-NEXT:  bb:
83; CHECK-NEXT:    ret void
84;
85bb:
86  ret void
87}
88