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1; RUN: llc -mtriple x86_64-apple-macosx -O0 -filetype=obj -o %t_le.o %s2; RUN: llvm-dwarfdump -v -debug-info %t_le.o | FileCheck %s3 4; Produced at -O0 from:5; struct bitfield {6; int a : 2;7; int b : 32;8; int c : 1;9; int d : 28;10; };11; struct bitfield b;12 13; Note that DWARF 2 counts bit offsets backwards from the high end of14; the storage unit to the high end of the bit field.15 16; CHECK: DW_TAG_member17; CHECK-NEXT: DW_AT_name{{.*}}"a"18; CHECK-NOT: DW_TAG_member19; CHECK: DW_AT_byte_size {{.*}} (0x04)20; CHECK-NEXT: DW_AT_bit_size {{.*}} (0x02)21; CHECK-NEXT: DW_AT_bit_offset {{.*}} (0x1e)22; CHECK-NEXT: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x0)23 24; CHECK: DW_TAG_member25; CHECK-NEXT: DW_AT_name{{.*}}"b"26; CHECK-NOT: DW_TAG_member27; CHECK: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x4)28 29; CHECK: DW_TAG_member30; CHECK-NEXT: DW_AT_name{{.*}}"c"31; CHECK-NOT: DW_TAG_member32; CHECK: DW_AT_byte_size {{.*}} (0x04)33; CHECK-NEXT: DW_AT_bit_size {{.*}} (0x01)34; CHECK-NEXT: DW_AT_bit_offset {{.*}} (0x1f)35; CHECK: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x8)36 37; CHECK: DW_TAG_member38; CHECK-NEXT: DW_AT_name{{.*}}"d"39; CHECK-NOT: DW_TAG_member40; CHECK: DW_AT_byte_size {{.*}} (0x04)41; CHECK-NEXT: DW_AT_bit_size {{.*}} (0x1c)42; CHECK-NEXT: DW_AT_bit_offset {{.*}} (0x03)43; CHECK-NEXT: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x8)44 45; ModuleID = 'bitfields.c'46source_filename = "test/DebugInfo/X86/bitfields.ll"47target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"48target triple = "x86_64-apple-macosx"49 50%struct.bitfield = type <{ i8, [3 x i8], i64 }>51 52@b = common global %struct.bitfield zeroinitializer, align 4, !dbg !053 54!llvm.dbg.cu = !{!2}55!llvm.module.flags = !{!13, !14, !15}56!llvm.ident = !{!16}57 58!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())59!1 = !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true)60!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5, imports: !4)61!3 = !DIFile(filename: "bitfields.c", directory: "/")62!4 = !{}63!5 = !{!0}64!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "bitfield", file: !3, line: 1, size: 96, elements: !7)65!7 = !{!8, !10, !11, !12}66!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 2, flags: DIFlagBitField)67!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)68!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !9, size: 32, offset: 32, flags: DIFlagBitField)69!11 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !6, file: !3, line: 4, baseType: !9, size: 1, offset: 64, flags: DIFlagBitField)70!12 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !3, line: 5, baseType: !9, size: 28, offset: 65, flags: DIFlagBitField)71!13 = !{i32 2, !"Dwarf Version", i32 2}72!14 = !{i32 2, !"Debug Info Version", i32 3}73!15 = !{i32 1, !"PIC Level", i32 2}74!16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"}75 76