1; RUN: llc < %s | FileCheck %s 2 3; Original C++ source: 4; struct Bits { 5; unsigned char b0 : 1; 6; unsigned char b1 : 1; 7; } bits; 8; const unsigned char *p_const; 9 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. 14 15; CHECK-LABEL: # BitField ({{.*}}) { 16; CHECK-NEXT: # TypeLeafKind: LF_BITFIELD (0x1205) 17; CHECK-NEXT: # Type: unsigned char (0x20) 18; CHECK-NEXT: # BitSize: 1 19; CHECK-NEXT: # BitOffset: 0 20; CHECK-NEXT: # } 21 22; CHECK-LABEL: # Modifier ({{.*}}) { 23; CHECK-NEXT: # TypeLeafKind: LF_MODIFIER (0x1001) 24; CHECK-NEXT: # ModifiedType: unsigned char (0x20) 25; CHECK-NEXT: # Modifiers [ (0x1) 26; CHECK-NEXT: # Const (0x1) 27; CHECK-NEXT: # ] 28; CHECK-NEXT: # } 29 30; ModuleID = 't.cpp' 31source_filename = "t.cpp" 32target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 33target triple = "x86_64-pc-windows-msvc19.13.26131" 34 35%struct.Bits = type { i8 } 36 37@"?bits@@3UBits@@A" = dso_local global %struct.Bits zeroinitializer, align 1, !dbg !0 38@"?p_const@@3PEBEEB" = dso_local global i8* null, align 8, !dbg !6 39 40!llvm.dbg.cu = !{!2} 41!llvm.module.flags = !{!15, !16, !17, !18} 42!llvm.ident = !{!19} 43 44!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 45!1 = distinct !DIGlobalVariable(name: "bits", linkageName: "?bits@@3UBits@@A", scope: !2, file: !3, line: 4, type: !11, isLocal: false, isDefinition: true) 46!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) 47!3 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "8910833bbe8b669a3787c8f44dff1313") 48!4 = !{} 49!5 = !{!0, !6} 50!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression()) 51!7 = distinct !DIGlobalVariable(name: "p_const", linkageName: "?p_const@@3PEBEEB", scope: !2, file: !3, line: 5, type: !8, isLocal: false, isDefinition: true) 52!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64) 53!9 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !10) 54!10 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char) 55!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Bits", file: !3, line: 1, size: 8, flags: DIFlagTypePassByValue, elements: !12, identifier: ".?AUBits@@") 56!12 = !{!13, !14} 57!13 = !DIDerivedType(tag: DW_TAG_member, name: "b0", scope: !11, file: !3, line: 2, baseType: !10, size: 1, flags: DIFlagBitField, extraData: i64 0) 58!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) 59!15 = !{i32 2, !"CodeView", i32 1} 60!16 = !{i32 2, !"Debug Info Version", i32 3} 61!17 = !{i32 1, !"wchar_size", i32 2} 62!18 = !{i32 7, !"PIC Level", i32 2} 63!19 = !{!"clang version 7.0.0 "} 64