1 ; RUN: llc -mtriple x86_64-apple-macosx -O0 -filetype=obj -o %t_le.o %s 2 ; RUN: llvm-dwarfdump -v -debug-info %t_le.o | FileCheck %s 3 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 of 14 ; the storage unit to the high end of the bit field. 15 16 ; CHECK: DW_TAG_member 17 ; CHECK-NEXT: DW_AT_name{{.*}}"a" 18 ; CHECK-NOT: DW_TAG_member 19 ; 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_member 25 ; CHECK-NEXT: DW_AT_name{{.*}}"b" 26 ; CHECK-NOT: DW_TAG_member 27 ; CHECK: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x4) 28 29 ; CHECK: DW_TAG_member 30 ; CHECK-NEXT: DW_AT_name{{.*}}"c" 31 ; CHECK-NOT: DW_TAG_member 32 ; 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_member 38 ; CHECK-NEXT: DW_AT_name{{.*}}"d" 39 ; CHECK-NOT: DW_TAG_member 40 ; 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' 46 source_filename = "test/DebugInfo/X86/bitfields.ll" 47 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 48 target 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 !0 53 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) 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) 69 !11 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !6, file: !3, line: 4, baseType: !9, size: 1, offset: 64) 70 !12 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !3, line: 5, baseType: !9, size: 28, offset: 65) 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
