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gerrit-public.fairphone.software / toolchain / llvm-project / 153fe60079b0380dc8f3cd4ed107fbb859284956 / . / llvm / test / Analysis / MemoryDependenceAnalysis / invariant.group-bug.ll
blob: 00ed8d6ed78924b9421dbcbd180511f45ffdd463 [file] [log] [blame]
Piotr Padlewski153fe602018-05-18 22:40:34 +0000[diff] [blame^]1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -gvn -S < %s | FileCheck %s
3
4; Memdep had funny bug related to invariant.groups - because it did not
5; invalidated cache, in some very rare cases it was possible to show memory
6; dependence of the instruction that was deleted, but because other instruction
7; took it's place it resulted in call to vtable! Removing any of the branch
8; hides the bug.
9
10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
11target triple = "x86_64-grtev4-linux-gnu"
12
13%0 = type { i32 (...)**, %1 }
14%1 = type { %2 }
15%2 = type { %3 }
16%3 = type { %4, i64, %5 }
17%4 = type { i8* }
18%5 = type { i64, [8 x i8] }
19
20define void @fail(i1* noalias sret, %0*, %1*, i8*) local_unnamed_addr #0 {
21; CHECK-LABEL: @fail(
22; CHECK-NEXT: [[TMP5:%.*]] = bitcast %0* [[TMP1:%.*]] to i64 (%0*)***
23; CHECK-NEXT: [[TMP6:%.*]] = load i64 (%0*)**, i64 (%0*)*** [[TMP5]], align 8, !invariant.group !6
24; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i64 (%0*)*, i64 (%0*)** [[TMP6]], i64 6
25; CHECK-NEXT: [[TMP8:%.*]] = load i64 (%0*)*, i64 (%0*)** [[TMP7]], align 8, !invariant.load !6
26; CHECK-NEXT: [[TMP9:%.*]] = tail call i64 [[TMP8]](%0* [[TMP1]]) #1
27; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds [[TMP1]], %1* [[TMP2:%.*]], i64 0, i32 0, i32 0, i32 0, i32 0
28; CHECK-NEXT: [[TMP11:%.*]] = load i8*, i8** [[TMP10]], align 8
29; CHECK-NEXT: store i8 0, i8* [[TMP11]], align 1
30; CHECK-NEXT: [[TMP12:%.*]] = bitcast i64 (%0*)** [[TMP6]] to i64 (%0*, i8*, i64)**
31; CHECK-NEXT: br i1 undef
32; CHECK: [[TMP14:%.*]] = bitcast %0* [[TMP1]] to i64 (%0*, i8*, i64)***
33; CHECK-NEXT: [[DOTPHI_TRANS_INSERT:%.*]] = getelementptr inbounds i64 (%0*, i8*, i64)*, i64 (%0*, i8*, i64)** [[TMP12]], i64 22
34; CHECK-NEXT: [[DOTPRE:%.*]] = load i64 (%0*, i8*, i64)*, i64 (%0*, i8*, i64)** [[DOTPHI_TRANS_INSERT]], align 8, !invariant.load !6
35; CHECK-NEXT: br label [[TMP15:%.*]]
36; CHECK: [[TMP16:%.*]] = call i64 [[DOTPRE]](%0* nonnull [[TMP1]], i8* null, i64 0) #1
37
38 %5 = bitcast %0* %1 to i64 (%0*)***
39 %6 = load i64 (%0*)**, i64 (%0*)*** %5, align 8, !invariant.group !6
40 %7 = getelementptr inbounds i64 (%0*)*, i64 (%0*)** %6, i64 6
41 %8 = load i64 (%0*)*, i64 (%0*)** %7, align 8, !invariant.load !6
42 %9 = tail call i64 %8(%0* %1) #1
43 %10 = getelementptr inbounds %1, %1* %2, i64 0, i32 0, i32 0, i32 0, i32 0
44 %11 = load i8*, i8** %10, align 8
45 store i8 0, i8* %11, align 1
46 br i1 undef, label %12, label %31
47
48; <label>:12: ; preds = %4
49 %13 = bitcast %0* %1 to i64 (%0*, i8*, i64)***
50 br label %14
51
52; <label>:14: ; preds = %30, %12
53 %15 = load i64 (%0*, i8*, i64)**, i64 (%0*, i8*, i64)*** %13, align 8, !invariant.group !6
54 %16 = getelementptr inbounds i64 (%0*, i8*, i64)*, i64 (%0*, i8*, i64)** %15, i64 22
55 %17 = load i64 (%0*, i8*, i64)*, i64 (%0*, i8*, i64)** %16, align 8, !invariant.load !6
56 %18 = call i64 %17(%0* nonnull %1, i8* null, i64 0) #1
57 br i1 undef, label %30, label %19
58
59; <label>:19: ; preds = %14
60 br i1 undef, label %20, label %23
61
62; <label>:20: ; preds = %19
63 br label %21
64
65; <label>:21: ; preds = %20
66 br label %22
67
68; <label>:22: ; preds = %21
69 br label %30
70
71; <label>:23: ; preds = %19
72 br label %24
73
74; <label>:24: ; preds = %23
75 br label %25
76
77; <label>:25: ; preds = %24
78 br label %26
79
80; <label>:26: ; preds = %25
81 br i1 undef, label %27, label %28
82
83; <label>:27: ; preds = %26
84 br label %30
85
86; <label>:28: ; preds = %26
87 br label %29
88
89; <label>:29: ; preds = %28
90 br label %30
91
92; <label>:30: ; preds = %29, %27, %22, %14
93 br i1 undef, label %14, label %31
94
95; <label>:31: ; preds = %30, %4
96 ret void
97}
98
99attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
100attributes #1 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
101
102!llvm.linker.options = !{}
103!llvm.module.flags = !{!0, !1, !3, !4, !5}
104
105!0 = !{i32 1, !"StrictVTablePointers", i32 1}
106!1 = !{i32 3, !"StrictVTablePointersRequirement", !2}
107!2 = !{!"StrictVTablePointers", i32 1}
108!3 = !{i32 1, !"wchar_size", i32 4}
109!4 = !{i32 7, !"PIC Level", i32 2}
110!5 = !{i32 7, !"PIE Level", i32 2}
111!6 = !{}