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1; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-info --name=data --name=d -c - \2; RUN: | FileCheck %s --implicit-check-not=DW_TAG3 4; Generated by clang -c -g -std=c11 -S -emit-llvm from the following C11 source5;6; // every object of type struct data will be aligned to 128-byte boundary7; struct data {8; char x;9; _Alignas(128) char arr[2];10; };11;12; _Alignas(2048) struct data d; // this instance of data is aligned even stricter13; int foo(void)14; {15; struct data local_data;16; return 0;17; }18 19; CHECK: DW_TAG_variable20; CHECK: DW_AT_name{{.*}}"d"21; CHECK: DW_AT_alignment{{.*}}204822 23; CHECK: DW_TAG_structure_type24; CHECK: DW_TAG_member25; CHECK: DW_TAG_member26; CHECK: DW_AT_name{{.*}}"arr"27; CHECK: DW_AT_alignment{{.*}}12828 29; ModuleID = 'test.c'30source_filename = "test.c"31target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"32target triple = "x86_64-unknown-linux-gnu"33 34%struct.data = type { i8, [127 x i8], [2 x i8], [126 x i8] }35 36@d = common global %struct.data zeroinitializer, align 2048, !dbg !037 38; Function Attrs: nounwind uwtable39define i32 @foo() #0 !dbg !17 {40entry:41 %local_data = alloca %struct.data, align 12842 call void @llvm.dbg.declare(metadata ptr %local_data, metadata !21, metadata !22), !dbg !2343 ret i32 0, !dbg !2444}45 46; Function Attrs: nounwind readnone47declare void @llvm.dbg.declare(metadata, metadata, metadata) #148 49attributes #0 = { nounwind uwtable }50attributes #1 = { nounwind readnone }51 52!llvm.dbg.cu = !{!2}53!llvm.module.flags = !{!14, !15}54!llvm.ident = !{!16}55 56!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())57!1 = !DIGlobalVariable(name: "d", scope: !2, file: !3, line: 7, type: !6, isLocal: false, isDefinition: true, align: 16384)58!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 4.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)59!3 = !DIFile(filename: "test.c", directory: "/tmp")60!4 = !{}61!5 = !{!0}62!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "data", file: !3, line: 2, size: 2048, elements: !7)63!7 = !{!8, !10}64!8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !3, line: 3, baseType: !9, size: 8)65!9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)66!10 = !DIDerivedType(tag: DW_TAG_member, name: "arr", scope: !6, file: !3, line: 4, baseType: !11, size: 16, align: 1024, offset: 1024)67!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 16, elements: !12)68!12 = !{!13}69!13 = !DISubrange(count: 2)70!14 = !{i32 2, !"Dwarf Version", i32 4}71!15 = !{i32 2, !"Debug Info Version", i32 3}72!16 = !{!"clang version 4.0.0"}73!17 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 8, type: !18, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)74!18 = !DISubroutineType(types: !19)75!19 = !{!20}76!20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)77!21 = !DILocalVariable(name: "local_data", scope: !17, file: !3, line: 10, type: !6)78!22 = !DIExpression()79!23 = !DILocation(line: 10, column: 17, scope: !17)80!24 = !DILocation(line: 11, column: 5, scope: !17)81 82