1 ; RUN: llc < %s | FileCheck %s
5 ; unsigned char b0 : 1;
6 ; unsigned char b1 : 1;
8 ; const unsigned char *p_const;
10 ; In PR37492, there was an issue in global type hashing where we forgot to
11 ; consider the prefix portion of a type record when hashing it. This lead to a
12 ; collision between this LF_BITFIELD and LF_MODIFIER record, so we only emitted
13 ; one under the assumption that the other was redundant. Check that we emit both.
15 ; CHECK-LABEL: # BitField (0x1001)
16 ; CHECK-NEXT: .short 0xa # Record length
17 ; CHECK-NEXT: .short 0x1205 # Record kind: LF_BITFIELD
18 ; CHECK-NEXT: .long 0x20 # Type: unsigned char
19 ; CHECK-NEXT: .byte 0x1 # BitSize
20 ; CHECK-NEXT: .byte 0x0 # BitOffset
21 ; CHECK-NEXT: .byte 242
22 ; CHECK-NEXT: .byte 241
24 ; CHECK-LABEL: # Modifier (0x1007)
25 ; CHECK-NEXT: .short 0xa # Record length
26 ; CHECK-NEXT: .short 0x1001 # Record kind: LF_MODIFIER
27 ; CHECK-NEXT: .long 0x20 # ModifiedType: unsigned char
28 ; CHECK-NEXT: .short 0x1 # Modifiers ( Const (0x1) )
29 ; CHECK-NEXT: .byte 242
30 ; CHECK-NEXT: .byte 241
33 source_filename = "t.cpp"
34 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
35 target triple = "x86_64-pc-windows-msvc19.13.26131"
37 %struct.Bits = type { i8 }
39 @"?bits@@3UBits@@A" = dso_local global %struct.Bits zeroinitializer, align 1, !dbg !0
40 @"?p_const@@3PEBEEB" = dso_local global i8* null, align 8, !dbg !6
43 !llvm.module.flags = !{!15, !16, !17, !18}
46 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
47 !1 = distinct !DIGlobalVariable(name: "bits", linkageName: "?bits@@3UBits@@A", scope: !2, file: !3, line: 4, type: !11, isLocal: false, isDefinition: true)
48 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
49 !3 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "8910833bbe8b669a3787c8f44dff1313")
52 !6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
53 !7 = distinct !DIGlobalVariable(name: "p_const", linkageName: "?p_const@@3PEBEEB", scope: !2, file: !3, line: 5, type: !8, isLocal: false, isDefinition: true)
54 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
55 !9 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !10)
56 !10 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
57 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Bits", file: !3, line: 1, size: 8, flags: DIFlagTypePassByValue, elements: !12, identifier: ".?AUBits@@")
59 !13 = !DIDerivedType(tag: DW_TAG_member, name: "b0", scope: !11, file: !3, line: 2, baseType: !10, size: 1, flags: DIFlagBitField, extraData: i64 0)
60 !14 = !DIDerivedType(tag: DW_TAG_member, name: "b1", scope: !11, file: !3, line: 3, baseType: !10, size: 1, offset: 1, flags: DIFlagBitField, extraData: i64 0)
61 !15 = !{i32 2, !"CodeView", i32 1}
62 !16 = !{i32 2, !"Debug Info Version", i32 3}
63 !17 = !{i32 1, !"wchar_size", i32 2}
64 !18 = !{i32 7, !"PIC Level", i32 2}
65 !19 = !{!"clang version 7.0.0 "}