1 ; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s
3 ; This test checks that types which are used in expressions, but for which
4 ; there are no variables, known as retained types, get emitted.
6 ; C++ source to regenerate:
10 ; return static_cast<S*>(p)->x;
12 ; $ clang /tmp/a.cc -S -emit-llvm -g -gcodeview -target x86_64-windows-msvc -o t.ll
14 ; CHECK: Struct (0x{{[0-9A-F]+}}) {
15 ; CHEC-NEXT: TypeLeafKind: LF_STRUCTURE (0x1505)
16 ; CHEC-NEXT: MemberCount: 0
17 ; CHEC-NEXT: Properties [ (0x280)
18 ; CHEC-NEXT: ForwardReference (0x80)
19 ; CHEC-NEXT: HasUniqueName (0x200)
21 ; CHEC-NEXT: FieldList: 0x0
22 ; CHEC-NEXT: DerivedFrom: 0x0
23 ; CHEC-NEXT: VShape: 0x0
24 ; CHEC-NEXT: SizeOf: 0
26 ; CHEC-NEXT: LinkageName: .?AUS@@
29 ; CHECK: Struct (0x{{[0-9A-F]+}}) {
30 ; CHECK-NEXT: TypeLeafKind: LF_STRUCTURE (0x1505)
31 ; CHECK-NEXT: MemberCount: 1
32 ; CHECK-NEXT: Properties [ (0x200)
33 ; CHECK-NEXT: HasUniqueName (0x200)
35 ; CHECK-NEXT: FieldList: <field list> (0x{{[0-9A-F]+}})
36 ; CHECK-NEXT: DerivedFrom: 0x0
37 ; CHECK-NEXT: VShape: 0x0
38 ; CHECK-NEXT: SizeOf: 4
40 ; CHECK-NEXT: LinkageName: .?AUS@@
43 ; ModuleID = '/tmp/a.cc'
44 source_filename = "/tmp/a.cc"
45 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
46 target triple = "x86_64--windows-msvc18.0.0"
48 %struct.S = type { i32 }
50 ; Function Attrs: nounwind uwtable
51 define i32 @"\01?f@@YAHPEAX@Z"(i8* %p) #0 !dbg !13 {
53 %p.addr = alloca i8*, align 8
54 store i8* %p, i8** %p.addr, align 8
55 call void @llvm.dbg.declare(metadata i8** %p.addr, metadata !17, metadata !18), !dbg !19
56 %0 = load i8*, i8** %p.addr, align 8, !dbg !20
57 %1 = bitcast i8* %0 to %struct.S*, !dbg !21
58 %x = getelementptr inbounds %struct.S, %struct.S* %1, i32 0, i32 0, !dbg !22
59 %2 = load i32, i32* %x, align 4, !dbg !22
63 ; Function Attrs: nounwind readnone
64 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
66 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
67 attributes #1 = { nounwind readnone }
70 !llvm.module.flags = !{!9, !10, !11}
73 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 273441) (llvm/trunk 273449)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
74 !1 = !DIFile(filename: "/tmp/a.cc", directory: "/usr/local/google/work/llvm/build.release")
77 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64, align: 64)
78 !5 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !1, line: 1, size: 32, align: 32, elements: !6, identifier: ".?AUS@@")
80 !7 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !5, file: !1, line: 1, baseType: !8, size: 32, align: 32)
81 !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
82 !9 = !{i32 2, !"CodeView", i32 1}
83 !10 = !{i32 2, !"Debug Info Version", i32 3}
84 !11 = !{i32 1, !"PIC Level", i32 2}
85 !12 = !{!"clang version 3.9.0 (trunk 273441) (llvm/trunk 273449)"}
86 !13 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YAHPEAX@Z", scope: !1, file: !1, line: 2, type: !14, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
87 !14 = !DISubroutineType(types: !15)
89 !16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64, align: 64)
90 !17 = !DILocalVariable(name: "p", arg: 1, scope: !13, file: !1, line: 2, type: !16)
92 !19 = !DILocation(line: 2, column: 13, scope: !13)
93 !20 = !DILocation(line: 3, column: 26, scope: !13)
94 !21 = !DILocation(line: 3, column: 10, scope: !13)
95 !22 = !DILocation(line: 3, column: 30, scope: !13)
96 !23 = !DILocation(line: 3, column: 3, scope: !13)