1; Check that the DISubrange 'count' reference is correctly uniqued and restored, 2; since it can take the value of either a signed integer or a DIVariable. 3; RUN: llvm-as < %s | llvm-dis | FileCheck %s 4 5define void @foo(i32 %n) { 6entry: 7 %0 = zext i32 %n to i64 8 %vla = alloca i32, i64 %0, align 16 9 call void @llvm.dbg.declare(metadata i32* %vla, metadata !19, metadata !12), !dbg !18 10 ret void 11} 12 13declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 14 15!llvm.dbg.cu = !{!0} 16!llvm.module.flags = !{!3, !4, !5} 17!llvm.ident = !{!6} 18 19!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.1", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 20!1 = !DIFile(filename: "vla.c", directory: "/path/to") 21!2 = !{} 22!3 = !{i32 2, !"Dwarf Version", i32 4} 23!4 = !{i32 2, !"Debug Info Version", i32 3} 24!5 = !{i32 1, !"wchar_size", i32 4} 25!6 = !{!"clang version 5.0.1"} 26!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 20, type: !8, isLocal: false, isDefinition: true, scopeLine: 20, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !11) 27!8 = !DISubroutineType(types: !9) 28!9 = !{null, !10} 29!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 30!11 = !{!16, !19} 31!12 = !DIExpression() 32!16 = !DILocalVariable(name: "vla_expr", scope: !7, file: !1, line: 21, type: !17) 33!17 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) 34!18 = !DILocation(line: 21, column: 7, scope: !7) 35!19 = !DILocalVariable(name: "vla", scope: !7, file: !1, line: 21, type: !20) 36!20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, align: 32, elements: !21) 37!21 = !{!22, !23, !24, !25, !26, !27} 38 39; CHECK-DAG: ![[NODE:[0-9]+]] = !DILocalVariable(name: "vla_expr" 40; CHECK-DAG: ![[RANGE:[0-9]+]] = !DISubrange(count: ![[NODE]]) 41; CHECK-DAG: ![[CONST:[0-9]+]] = !DISubrange(count: 16) 42; CHECK-DAG: ![[MULTI:[0-9]+]] = !{![[RANGE]], ![[RANGE]], ![[CONST]], ![[CONST]], ![[CONST]], ![[CONST]]} 43; CHECK-DAG: elements: ![[MULTI]] 44!22 = !DISubrange(count: !16) 45!23 = !DISubrange(count: !16) 46!24 = !DISubrange(count: 16) 47!25 = !DISubrange(count: i16 16) 48!26 = !DISubrange(count: i32 16) 49!27 = !DISubrange(count: i64 16) 50