74 lines · plain
1; The use of llvm-dis here tests that round-tripping the IR works2; correctly for the expression case.3; RUN: llvm-as < %s | llvm-dis | llc -mtriple=x86_64 -O0 -filetype=obj -o - | llvm-dwarfdump -v -debug-info - | FileCheck %s4 5; A basic test of using a DIExpression for DW_AT_data_bit_offset and6; DW_AT_bit_size.7 8source_filename = "bitfield.c"9 10%struct.PackedBits = type <{ i8, i32 }>11 12@s = common global %struct.PackedBits zeroinitializer, align 1, !dbg !213@value = common global i32 zeroinitializer, align 4, !dbg !014 15!llvm.dbg.cu = !{!4}16!llvm.module.flags = !{!17, !18, !19}17!llvm.ident = !{!20}18 19!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())20!1 = !DIGlobalVariable(name: "value", scope: !4, file: !5, line: 8, type: !15, isLocal: false, isDefinition: true)21!2 = distinct !DIGlobalVariableExpression(var: !3, expr: !DIExpression())22!3 = !DIGlobalVariable(name: "s", scope: !4, file: !5, line: 8, type: !8, isLocal: false, isDefinition: true)23 24 25!4 = distinct !DICompileUnit(language: DW_LANG_C99, file: !5, producer: "clang version 3.9.0 (trunk 267633)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !6, globals: !7)26!5 = !DIFile(filename: "bitfield.c", directory: "/Volumes/Data/llvm")27!6 = !{}28!7 = !{!0, !2}29!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "PackedBits", file: !5, line: 3, size: 40, elements: !9)30!9 = !{!10, !12, !16, !21}31!10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !5, line: 5, baseType: !11, size: 8)32; CHECK: DW_TAG_member33; CHECK-NEXT: DW_AT_name{{.*}}"a"34; CHECK-NOT: DW_TAG35; CHECK-NOT: DW_AT_bit_offset36; CHECK-NOT: DW_AT_data_bit_offset37; CHECK: DW_AT_data_member_location [DW_FORM_data1] (0x00)38!11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)39!12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !5, line: 6, baseType: !13, size: !3, offset: !3, flags: DIFlagBitField)40!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !14, line: 183, baseType: !15)41!14 = !DIFile(filename: "/Volumes/Data/llvm/_build.ninja.release/bin/../lib/clang/3.9.0/include/stdint.h", directory: "/Volumes/Data/llvm")42!15 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)43; CHECK: DW_TAG_member44; CHECK-NEXT: DW_AT_name{{.*}}"b"45; CHECK-NOT: DW_TAG46; CHECK-NOT: DW_AT_bit_offset47; CHECK-NOT: DW_AT_byte_size48; CHECK: DW_AT_bit_size [DW_FORM_ref4] ({{.*}})49; CHECK-NEXT: DW_AT_data_bit_offset [DW_FORM_ref4] ({{.*}})50; CHECK-NOT: DW_AT_data_member_location51!16 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !8, file: !5, line: 7, baseType: !13, size: !DIExpression(DW_OP_constu, 27), offset: !DIExpression(DW_OP_constu, 13), flags: DIFlagBitField)52!17 = !{i32 2, !"Dwarf Version", i32 4}53!18 = !{i32 2, !"Debug Info Version", i32 3}54!19 = !{i32 1, !"PIC Level", i32 2}55; CHECK: DW_TAG_member56; CHECK-NEXT: DW_AT_name{{.*}}"c"57; CHECK-NOT: DW_TAG58; CHECK-NOT: DW_AT_bit_offset59; CHECK-NOT: DW_AT_byte_size60; CHECK: DW_AT_bit_size [DW_FORM_exprloc] (DW_OP_lit27)61; CHECK-NEXT: DW_AT_data_bit_offset [DW_FORM_exprloc] (DW_OP_lit13)62; CHECK-NOT: DW_AT_data_member_location63!20 = !{!"clang version 3.9.0 (trunk 267633)"}64!21 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !8, file: !5, line: 7, baseType: !13, offset: !DIExpression(DW_OP_constu, 15), flags: DIFlagBitField)65; CHECK: DW_TAG_member66; CHECK-NEXT: DW_AT_name{{.*}}"d"67; CHECK-NOT: DW_TAG68; CHECK-NOT: DW_AT_bit_offset69; CHECK-NOT: DW_AT_byte_size70; CHECK-NOT: DW_AT_bit_size71; CHECK: DW_AT_data_bit_offset [DW_FORM_exprloc] (DW_OP_lit15)72; CHECK-NOT: DW_AT_data_member_location73; CHECK: DW_TAG74