1; RUN: llc < %s | FileCheck %s --check-prefix=ASM 2; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s --check-prefix=OBJ 3 4; RUN: llc --try-experimental-debuginfo-iterators < %s | FileCheck %s --check-prefix=ASM 5; RUN: llc --try-experimental-debuginfo-iterators < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s --check-prefix=OBJ 6 7; C++ source to regenerate: 8; struct Foo { 9; Foo() = default; 10; Foo(Foo &&other) { x = other.x; } 11; int x; 12; }; 13; void some_function(int); 14; Foo getFoo() { 15; Foo foo; 16; foo.x = 41; 17; some_function(foo.x); 18; return foo; 19; } 20; 21; int main() { 22; Foo bar = getFoo(); 23; return bar.x; 24; } 25; $ clang t.cpp -S -emit-llvm -g -o t.ll 26 27; ASM-LABEL: .long 241 # Symbol subsection for GetFoo 28; ASM: .short 4414 # Record kind: S_LOCAL 29; ASM-NEXT: .long 4113 # TypeIndex 30; ASM-NEXT: .short 0 # Flags 31; ASM-NEXT: .asciz "foo" 32; ASM-NEXT: .p2align 2 33; ASM-NEXT: .Ltmp 34; ASM: .cv_def_range .Ltmp{{.*}} .Ltmp{{.*}}, frame_ptr_rel, 40 35 36; OBJ: Subsection [ 37; OBJ: SubSectionType: Symbols (0xF1) 38; OBJ: LocalSym { 39; OBJ: Kind: S_LOCAL (0x113E) 40; OBJ: Type: Foo& (0x1011) 41; OBJ: Flags [ (0x0) 42; OBJ: ] 43; OBJ: VarName: foo 44; OBJ: } 45; OBJ: DefRangeFramePointerRelSym { 46; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142) 47; OBJ: Offset: 40 48; OBJ: LocalVariableAddrRange { 49; OBJ: OffsetStart: .text+0x1D 50; OBJ: ISectStart: 0x0 51; OBJ: Range: 0x16 52; OBJ: } 53 54; ModuleID = 't.cpp' 55source_filename = "t.cpp" 56target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 57target triple = "x86_64-pc-windows-msvc19.16.27030" 58 59%struct.Foo = type { i32 } 60 61; Function Attrs: noinline nounwind optnone uwtable 62define dso_local void @"?some_function@@YAXH@Z"(i32) #0 !dbg !8 { 63entry: 64 %.addr = alloca i32, align 4 65 store i32 %0, ptr %.addr, align 4 66 call void @llvm.dbg.declare(metadata ptr %.addr, metadata !12, metadata !DIExpression()), !dbg !13 67 ret void, !dbg !13 68} 69 70; Function Attrs: nounwind readnone speculatable 71declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 72 73; Function Attrs: noinline nounwind optnone uwtable 74define dso_local void @"?GetFoo@@YA?AUFoo@@XZ"(ptr noalias sret(%struct.Foo) %agg.result) #0 !dbg !14 { 75entry: 76 %result.ptr = alloca ptr, align 8 77 %0 = bitcast ptr %agg.result to ptr 78 store ptr %0, ptr %result.ptr, align 8 79 call void @llvm.dbg.declare(metadata ptr %result.ptr, metadata !28, metadata !DIExpression(DW_OP_deref)), !dbg !29 80 %x = getelementptr inbounds %struct.Foo, ptr %agg.result, i32 0, i32 0, !dbg !30 81 store i32 41, ptr %x, align 4, !dbg !30 82 %x1 = getelementptr inbounds %struct.Foo, ptr %agg.result, i32 0, i32 0, !dbg !31 83 %1 = load i32, ptr %x1, align 4, !dbg !31 84 call void @"?some_function@@YAXH@Z"(i32 %1), !dbg !31 85 ret void, !dbg !32 86} 87 88; Function Attrs: noinline norecurse nounwind optnone uwtable 89define dso_local i32 @main() #2 !dbg !33 { 90entry: 91 %retval = alloca i32, align 4 92 %bar = alloca %struct.Foo, align 4 93 store i32 0, ptr %retval, align 4 94 call void @llvm.dbg.declare(metadata ptr %bar, metadata !36, metadata !DIExpression()), !dbg !37 95 call void @"?GetFoo@@YA?AUFoo@@XZ"(ptr sret(%struct.Foo) %bar), !dbg !37 96 %x = getelementptr inbounds %struct.Foo, ptr %bar, i32 0, i32 0, !dbg !38 97 %0 = load i32, ptr %x, align 4, !dbg !38 98 ret i32 %0, !dbg !38 99} 100 101attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 102attributes #1 = { nounwind readnone speculatable } 103attributes #2 = { noinline norecurse nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 104 105!llvm.dbg.cu = !{!0} 106!llvm.module.flags = !{!3, !4, !5, !6} 107!llvm.ident = !{!7} 108 109!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git c19ebebac4bf853e77a69c74abe9f7fce98c1d17)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) 110!1 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Ctesting\5Cnrvo", checksumkind: CSK_MD5, checksum: "52a5a20c02c102dfd255d5615680a8bd") 111!2 = !{} 112!3 = !{i32 2, !"CodeView", i32 1} 113!4 = !{i32 2, !"Debug Info Version", i32 3} 114!5 = !{i32 1, !"wchar_size", i32 2} 115!6 = !{i32 7, !"PIC Level", i32 2} 116!7 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git c19ebebac4bf853e77a69c74abe9f7fce98c1d17)"} 117!8 = distinct !DISubprogram(name: "some_function", linkageName: "?some_function@@YAXH@Z", scope: !1, file: !1, line: 13, type: !9, scopeLine: 13, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 118!9 = !DISubroutineType(types: !10) 119!10 = !{null, !11} 120!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 121!12 = !DILocalVariable(arg: 1, scope: !8, file: !1, line: 13, type: !11) 122!13 = !DILocation(line: 13, scope: !8) 123!14 = distinct !DISubprogram(name: "GetFoo", linkageName: "?GetFoo@@YA?AUFoo@@XZ", scope: !1, file: !1, line: 15, type: !15, scopeLine: 15, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 124!15 = !DISubroutineType(types: !16) 125!16 = !{!17} 126!17 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !1, line: 1, size: 32, flags: DIFlagTypePassByReference | DIFlagNonTrivial, elements: !18, identifier: ".?AUFoo@@") 127!18 = !{!19, !20, !24} 128!19 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !17, file: !1, line: 4, baseType: !11, size: 32) 129!20 = !DISubprogram(name: "Foo", scope: !17, file: !1, line: 2, type: !21, scopeLine: 2, flags: DIFlagPrototyped, spFlags: 0) 130!21 = !DISubroutineType(types: !22) 131!22 = !{null, !23} 132!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 133!24 = !DISubprogram(name: "Foo", scope: !17, file: !1, line: 3, type: !25, scopeLine: 3, flags: DIFlagPrototyped, spFlags: 0) 134!25 = !DISubroutineType(types: !26) 135!26 = !{null, !23, !27} 136!27 = !DIDerivedType(tag: DW_TAG_rvalue_reference_type, baseType: !17, size: 64) 137!28 = !DILocalVariable(name: "foo", scope: !14, file: !1, line: 17, type: !17) 138!29 = !DILocation(line: 17, scope: !14) 139!30 = !DILocation(line: 18, scope: !14) 140!31 = !DILocation(line: 19, scope: !14) 141!32 = !DILocation(line: 21, scope: !14) 142!33 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 23, type: !34, scopeLine: 23, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 143!34 = !DISubroutineType(types: !35) 144!35 = !{!11} 145!36 = !DILocalVariable(name: "bar", scope: !33, file: !1, line: 24, type: !17) 146!37 = !DILocation(line: 24, scope: !33) 147!38 = !DILocation(line: 25, scope: !33) 148