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' 31 source_filename = "t.cpp" 32 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 33 target 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
