79 lines · plain
1; RUN: llc -mtriple aarch64_be-gnu-linux -O0 -filetype=obj -o %t_be.o %s2; RUN: llvm-dwarfdump -v -debug-info %t_be.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 {{.*}} (0x00)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_byte_size {{.*}} (0x04)28; CHECK-NEXT: DW_AT_bit_size {{.*}} (0x20)29; CHECK-NEXT: DW_AT_bit_offset {{.*}} (0x00)30; CHECK: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x4)31 32; CHECK: DW_TAG_member33; CHECK-NEXT: DW_AT_name{{.*}}"c"34; CHECK-NOT: DW_TAG_member35; CHECK: DW_AT_byte_size {{.*}} (0x04)36; CHECK-NEXT: DW_AT_bit_size {{.*}} (0x01)37; CHECK-NEXT: DW_AT_bit_offset {{.*}} (0x00)38; CHECK: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x8)39 40; CHECK: DW_TAG_member41; CHECK-NEXT: DW_AT_name{{.*}}"d"42; CHECK-NOT: DW_TAG_member43; CHECK: DW_AT_byte_size {{.*}} (0x04)44; CHECK-NEXT: DW_AT_bit_size {{.*}} (0x1c)45; CHECK-NEXT: DW_AT_bit_offset {{.*}} (0x01)46; CHECK-NEXT: DW_AT_data_member_location {{.*}} (DW_OP_plus_uconst 0x8)47 48; ModuleID = 'bitfields.c'49source_filename = "test/DebugInfo/AArch64/bitfields.ll"50target datalayout = "E-m:e-i64:64-i128:128-n32:64-S128"51target triple = "aarch64_be--linux-gnu"52 53%struct.bitfield = type <{ i8, [3 x i8], i64 }>54 55@b = common global %struct.bitfield zeroinitializer, align 4, !dbg !056 57!llvm.dbg.cu = !{!2}58!llvm.module.flags = !{!13, !14, !15}59!llvm.ident = !{!16}60 61!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())62!1 = !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true)63!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)64!3 = !DIFile(filename: "bitfields.c", directory: "/")65!4 = !{}66!5 = !{!0}67!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "bitfield", file: !3, line: 1, size: 96, elements: !7)68!7 = !{!8, !10, !11, !12}69!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 2, flags: DIFlagBitField)70!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)71!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !9, size: 32, offset: 32, flags: DIFlagBitField)72!11 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !6, file: !3, line: 4, baseType: !9, size: 1, offset: 64, flags: DIFlagBitField)73!12 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !3, line: 5, baseType: !9, size: 28, offset: 65, flags: DIFlagBitField)74!13 = !{i32 2, !"Dwarf Version", i32 2}75!14 = !{i32 2, !"Debug Info Version", i32 3}76!15 = !{i32 1, !"PIC Level", i32 2}77!16 = !{!"clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)"}78 79