1 ; RUN: llc -mtriple x86_64-apple-macosx -O0 -filetype=obj -o %t_le.o %s 2 ; RUN: llvm-dwarfdump -debug-dump=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 {{.*}} 00 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 {{.*}} 04 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-NEXT: DW_AT_data_member_location {{.*}} 08 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 {{.*}} 08 44 45 ; ModuleID = 'bitfields.c' 46 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 47 target triple = "x86_64-apple-macosx" 48 49 %struct.bitfield = type <{ i8, [3 x i8], i64 }> 50 51 @b = common global %struct.bitfield zeroinitializer, align 4 52 53 !llvm.dbg.cu = !{!0} 54 !llvm.module.flags = !{!13, !14, !15} 55 !llvm.ident = !{!16} 56 57 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2) 58 !1 = !DIFile(filename: "bitfields.c", directory: "/") 59 !2 = !{} 60 !3 = !{!4} 61 !4 = !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 8, type: !6, isLocal: false, isDefinition: true, variable: %struct.bitfield* @b) 62 !5 = !DIFile(filename: "bitfields.c", directory: "/") 63 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "bitfield", file: !5, line: 1, size: 96, align: 32, elements: !7) 64 !7 = !{!8, !10, !11, !12} 65 !8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !5, line: 2, baseType: !9, size: 2, align: 32) 66 !9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 67 !10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !5, line: 3, baseType: !9, size: 32, align: 32, offset: 32) 68 !11 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !6, file: !5, line: 4, baseType: !9, size: 1, align: 32, offset: 64) 69 !12 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !5, line: 5, baseType: !9, size: 28, align: 32, offset: 65) 70 !13 = !{i32 2, !"Dwarf Version", i32 2} 71 !14 = !{i32 2, !"Debug Info Version", i32 3} 72 !15 = !{i32 1, !"PIC Level", i32 2} 73 !16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"} 74
