1; RUN: %llc_dwarf -accel-tables=Dwarf -filetype=obj -o %t < %s
2; RUN: llvm-dwarfdump -debug-names %t | FileCheck %s
3; RUN: llvm-dwarfdump -debug-names -verify %t | FileCheck --check-prefix=VERIFY %s
4
5; Generated from the following C code using
6; clang -S -emit-llvm -g col.c
7;
8; These names were carefully chosen to cause hash collisions. Each type-variable
9; pair will hash to the same value. The also happen to demonstrate a flaw in the
10; DWARF v5 hash function: A copy constructor and an assignment operator for a
11; class will always hash to the same value.
12;
13; typedef void *_ZN4lldb7SBBlockaSERKS0_;
14; _ZN4lldb7SBBlockaSERKS0_ _ZN4lldb7SBBlockC1ERKS0_;
15; typedef void *_ZN4lldb7SBErroraSERKS0_;
16; _ZN4lldb7SBErroraSERKS0_ _ZN4lldb7SBErrorC1ERKS0_;
17; typedef void *_ZN4lldb7SBValueaSERKS0_;
18; _ZN4lldb7SBValueaSERKS0_ _ZN4lldb7SBValueC1ERKS0_;
19; typedef void *_ZL11numCommutes;
20; _ZL11numCommutes _ZL11NumCommutes;
21; typedef void *_ZL9NumRemats;
22; _ZL9NumRemats _ZL9NumReMats;
23
24; Check that we have the right amount of hashes and names.
25; CHECK: Bucket count: 5
26; CHECK: Name count: 10
27
28; Check that all the names are present in the output
29; CHECK: Bucket 0
30; CHECK:     Hash: 0xF8CF70D
31; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZN4lldb7SBBlockaSERKS0_"
32; CHECK:     Hash: 0xF8CF70D
33; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZN4lldb7SBBlockC1ERKS0_"
34; CHECK:     Hash: 0x135A482C
35; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZN4lldb7SBErroraSERKS0_"
36; CHECK:     Hash: 0x135A482C
37; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZN4lldb7SBErrorC1ERKS0_"
38; CHECK-NOT: String:
39; CHECK: Bucket 1
40; CHECK-NEXT: EMPTY
41; CHECK: Bucket 2
42; CHECK:     Hash: 0x2841B989
43; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZL11numCommutes"
44; CHECK:     Hash: 0x2841B989
45; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZL11NumCommutes"
46; CHECK:     Hash: 0x3E190F5F
47; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZL9NumRemats"
48; CHECK:     Hash: 0x3E190F5F
49; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZL9NumReMats"
50; CHECK-NOT: String:
51; CHECK: Bucket 3
52; CHECK:     Hash: 0x2642207F
53; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZN4lldb7SBValueaSERKS0_"
54; CHECK:     Hash: 0x2642207F
55; CHECK-NEXT:String: 0x{{[0-9a-f]*}} "_ZN4lldb7SBValueC1ERKS0_"
56; CHECK-NOT: String:
57; CHECK:  Bucket 4
58; CHECK-NEXT: EMPTY
59
60; VERIFY: No errors.
61
62@_ZN4lldb7SBBlockC1ERKS0_ = common dso_local global i8* null, align 8, !dbg !0
63@_ZN4lldb7SBErrorC1ERKS0_ = common dso_local global i8* null, align 8, !dbg !6
64@_ZN4lldb7SBValueC1ERKS0_ = common dso_local global i8* null, align 8, !dbg !10
65@_ZL11NumCommutes = common dso_local global i8* null, align 8, !dbg !13
66@_ZL9NumReMats = common dso_local global i8* null, align 8, !dbg !16
67
68!llvm.dbg.cu = !{!2}
69!llvm.module.flags = !{!20, !21, !22}
70!llvm.ident = !{!23}
71
72!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
73!1 = distinct !DIGlobalVariable(name: "_ZN4lldb7SBBlockC1ERKS0_", scope: !2, file: !3, line: 1, type: !19, isLocal: false, isDefinition: true)
74!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 325496) (llvm/trunk 325732)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
75!3 = !DIFile(filename: "/tmp/col.c", directory: "/tmp")
76!4 = !{}
77!5 = !{!0, !6, !10, !13, !16}
78!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
79!7 = distinct !DIGlobalVariable(name: "_ZN4lldb7SBErrorC1ERKS0_", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
80!8 = !DIDerivedType(tag: DW_TAG_typedef, name: "_ZN4lldb7SBErroraSERKS0_", file: !3, line: 2, baseType: !9)
81!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
82!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
83!11 = distinct !DIGlobalVariable(name: "_ZN4lldb7SBValueC1ERKS0_", scope: !2, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true)
84!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "_ZN4lldb7SBValueaSERKS0_", file: !3, line: 3, baseType: !9)
85!13 = !DIGlobalVariableExpression(var: !14, expr: !DIExpression())
86!14 = distinct !DIGlobalVariable(name: "_ZL11NumCommutes", scope: !2, file: !3, line: 4, type: !15, isLocal: false, isDefinition: true)
87!15 = !DIDerivedType(tag: DW_TAG_typedef, name: "_ZL11numCommutes", file: !3, line: 4, baseType: !9)
88!16 = !DIGlobalVariableExpression(var: !17, expr: !DIExpression())
89!17 = distinct !DIGlobalVariable(name: "_ZL9NumReMats", scope: !2, file: !3, line: 5, type: !18, isLocal: false, isDefinition: true)
90!18 = !DIDerivedType(tag: DW_TAG_typedef, name: "_ZL9NumRemats", file: !3, line: 5, baseType: !9)
91!19 = !DIDerivedType(tag: DW_TAG_typedef, name: "_ZN4lldb7SBBlockaSERKS0_", file: !3, line: 1, baseType: !9)
92!20 = !{i32 2, !"Dwarf Version", i32 4}
93!21 = !{i32 2, !"Debug Info Version", i32 3}
94!22 = !{i32 1, !"wchar_size", i32 4}
95!23 = !{!"clang version 7.0.0 (trunk 325496) (llvm/trunk 325732)"}
96