1; RUN: llc -mtriple=x86_64-apple-darwin %s -o - -filetype=obj | llvm-dwarfdump - | FileCheck %s 2; CHECK: DW_TAG_subprogram 3; CHECK: DW_AT_name ("h") 4; CHECK: 0x00000[[VLAEXPR:.*]]: DW_TAG_variable 5; CHECK-NEXT: DW_AT_name ("vla_expr") 6; CHECK: DW_TAG_array_type 7; CHECK-NEXT: DW_AT_type {{.*}}"int" 8; CHECK-NOT: DW_TAG 9; CHECK: DW_TAG_subrange_type 10; CHECK-NEXT: DW_AT_type {{.*}}"__ARRAY_SIZE_TYPE__" 11; CHECK-NEXT: DW_AT_count (0x00000[[VLAEXPR]] 12; 13; 14; Generated from (and then modified): 15; 16; #define DECLARE_ARRAY(type, var_name, size) type var_name[size] 17; 18; void h(void); 19; void k(ptr); 20; 21; void g() { 22; h(); 23; } 24; 25; void h() { 26; int count = 2; 27; DECLARE_ARRAY(int, array, count); 28; k((ptr)array); 29; } 30source_filename = "/tmp/test.c" 31target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 32target triple = "x86_64-apple-macosx10.13.0" 33 34; Function Attrs: nounwind ssp uwtable 35define void @g() local_unnamed_addr #0 !dbg !10 { 36entry: 37 %vla2.i = alloca [2 x i32], align 16, !dbg !13 38 call void @llvm.dbg.declare(metadata ptr %vla2.i, metadata !20, metadata !DIExpression(DW_OP_stack_value)), !dbg !13 39 call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %vla2.i), !dbg !25 40 call void @llvm.dbg.value(metadata i32 2, metadata !16, metadata !DIExpression()) #3, !dbg !25 41 call void @llvm.dbg.value(metadata i64 2, metadata !18, metadata !DIExpression()) #3, !dbg !13 42 call void @llvm.dbg.value(metadata i32 2, metadata !16, metadata !DIExpression()) #3, !dbg !25 43 call void @llvm.dbg.value(metadata i64 2, metadata !18, metadata !DIExpression()) #3, !dbg !13 44 call void @k(ptr nonnull %vla2.i) #3, !dbg !26 45 call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %vla2.i), !dbg !27 46 ret void, !dbg !28 47} 48 49; Function Attrs: nounwind readnone speculatable 50declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 51 52declare void @k(ptr) local_unnamed_addr 53 54; Function Attrs: nounwind readnone speculatable 55declare void @llvm.dbg.value(metadata, metadata, metadata) #1 56 57; Function Attrs: argmemonly nounwind 58declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2 59 60; Function Attrs: argmemonly nounwind 61declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2 62 63attributes #0 = { nounwind ssp uwtable } 64attributes #1 = { nounwind readnone speculatable } 65attributes #2 = { argmemonly nounwind } 66attributes #3 = { nounwind } 67 68!llvm.dbg.cu = !{!0} 69!llvm.module.flags = !{!5, !6, !7, !8} 70!llvm.ident = !{!9} 71 72!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 324259) (llvm/trunk 324261)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3) 73!1 = !DIFile(filename: "/tmp/test.c", directory: "/") 74!2 = !{} 75!3 = !{!4} 76!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64) 77!5 = !{i32 2, !"Dwarf Version", i32 4} 78!6 = !{i32 2, !"Debug Info Version", i32 3} 79!7 = !{i32 1, !"wchar_size", i32 4} 80!8 = !{i32 7, !"PIC Level", i32 2} 81!9 = !{!"clang version 7.0.0 (trunk 324259) (llvm/trunk 324261)"} 82!10 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 6, type: !11, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !0, retainedNodes: !2) 83!11 = !DISubroutineType(types: !12) 84!12 = !{null} 85!13 = !DILocation(line: 12, column: 3, scope: !14, inlinedAt: !24) 86!14 = distinct !DISubprogram(name: "h", scope: !1, file: !1, line: 10, type: !11, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !15) 87!15 = !{!16, !18, !20} 88!16 = !DILocalVariable(name: "count", scope: !14, file: !1, line: 11, type: !17) 89!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 90!18 = !DILocalVariable(name: "vla_expr", scope: !14, file: !1, line: 12, type: !19) 91!19 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) 92!20 = !DILocalVariable(name: "array", scope: !14, file: !1, line: 12, type: !21) 93!21 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, elements: !22) 94!22 = !{!23} 95!23 = !DISubrange(count: !18) 96!24 = distinct !DILocation(line: 7, column: 3, scope: !10) 97!25 = !DILocation(line: 11, column: 7, scope: !14, inlinedAt: !24) 98!26 = !DILocation(line: 13, column: 3, scope: !14, inlinedAt: !24) 99!27 = !DILocation(line: 14, column: 1, scope: !14, inlinedAt: !24) 100!28 = !DILocation(line: 8, column: 1, scope: !10) 101