Index: llvm/include/llvm/DebugInfo/CodeView/TypeRecord.h =================================================================== --- llvm/include/llvm/DebugInfo/CodeView/TypeRecord.h +++ llvm/include/llvm/DebugInfo/CodeView/TypeRecord.h @@ -330,6 +330,10 @@ return !!(Attrs & uint32_t(PointerOptions::Unaligned)); } + bool isRestrict() const { + return !!(Attrs & uint32_t(PointerOptions::Restrict)); + } + TypeIndex ReferentType; uint32_t Attrs; Optional MemberInfo; Index: llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h =================================================================== --- llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h +++ llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h @@ -283,8 +283,12 @@ codeview::TypeIndex lowerTypeAlias(const DIDerivedType *Ty); codeview::TypeIndex lowerTypeArray(const DICompositeType *Ty); codeview::TypeIndex lowerTypeBasic(const DIBasicType *Ty); - codeview::TypeIndex lowerTypePointer(const DIDerivedType *Ty); - codeview::TypeIndex lowerTypeMemberPointer(const DIDerivedType *Ty); + codeview::TypeIndex lowerTypePointer( + const DIDerivedType *Ty, + codeview::PointerOptions PO = codeview::PointerOptions::None); + codeview::TypeIndex lowerTypeMemberPointer( + const DIDerivedType *Ty, + codeview::PointerOptions PO = codeview::PointerOptions::None); codeview::TypeIndex lowerTypeModifier(const DIDerivedType *Ty); codeview::TypeIndex lowerTypeFunction(const DISubroutineType *Ty); codeview::TypeIndex lowerTypeVFTableShape(const DIDerivedType *Ty); Index: llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp =================================================================== --- llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp +++ llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp @@ -1268,6 +1268,7 @@ return lowerTypePointer(cast(Ty)); case dwarf::DW_TAG_ptr_to_member_type: return lowerTypeMemberPointer(cast(Ty)); + case dwarf::DW_TAG_restrict_type: case dwarf::DW_TAG_const_type: case dwarf::DW_TAG_volatile_type: // TODO: add support for DW_TAG_atomic_type here @@ -1452,12 +1453,13 @@ return TypeIndex(STK); } -TypeIndex CodeViewDebug::lowerTypePointer(const DIDerivedType *Ty) { +TypeIndex CodeViewDebug::lowerTypePointer(const DIDerivedType *Ty, + PointerOptions PO) { TypeIndex PointeeTI = getTypeIndex(Ty->getBaseType()); - // Pointers to simple types can use SimpleTypeMode, rather than having a - // dedicated pointer type record. - if (PointeeTI.isSimple() && + // Pointers to simple types without any options can use SimpleTypeMode, rather + // than having a dedicated pointer type record. + if (PointeeTI.isSimple() && PO == PointerOptions::None && PointeeTI.getSimpleMode() == SimpleTypeMode::Direct && Ty->getTag() == dwarf::DW_TAG_pointer_type) { SimpleTypeMode Mode = Ty->getSizeInBits() == 64 @@ -1481,10 +1483,7 @@ PM = PointerMode::RValueReference; break; } - // FIXME: MSVC folds qualifiers into PointerOptions in the context of a method - // 'this' pointer, but not normal contexts. Figure out what we're supposed to - // do. - PointerOptions PO = PointerOptions::None; + PointerRecord PR(PointeeTI, PK, PM, PO, Ty->getSizeInBits() / 8); return TypeTable.writeLeafType(PR); } @@ -1522,7 +1521,8 @@ llvm_unreachable("invalid ptr to member representation"); } -TypeIndex CodeViewDebug::lowerTypeMemberPointer(const DIDerivedType *Ty) { +TypeIndex CodeViewDebug::lowerTypeMemberPointer(const DIDerivedType *Ty, + PointerOptions PO) { assert(Ty->getTag() == dwarf::DW_TAG_ptr_to_member_type); TypeIndex ClassTI = getTypeIndex(Ty->getClassType()); TypeIndex PointeeTI = getTypeIndex(Ty->getBaseType(), Ty->getClassType()); @@ -1531,7 +1531,7 @@ bool IsPMF = isa(Ty->getBaseType()); PointerMode PM = IsPMF ? PointerMode::PointerToMemberFunction : PointerMode::PointerToDataMember; - PointerOptions PO = PointerOptions::None; // FIXME + assert(Ty->getSizeInBits() / 8 <= 0xff && "pointer size too big"); uint8_t SizeInBytes = Ty->getSizeInBits() / 8; MemberPointerInfo MPI( @@ -1556,6 +1556,7 @@ TypeIndex CodeViewDebug::lowerTypeModifier(const DIDerivedType *Ty) { ModifierOptions Mods = ModifierOptions::None; + PointerOptions PO = PointerOptions::None; bool IsModifier = true; const DIType *BaseTy = Ty; while (IsModifier && BaseTy) { @@ -1563,9 +1564,16 @@ switch (BaseTy->getTag()) { case dwarf::DW_TAG_const_type: Mods |= ModifierOptions::Const; + PO |= PointerOptions::Const; break; case dwarf::DW_TAG_volatile_type: Mods |= ModifierOptions::Volatile; + PO |= PointerOptions::Volatile; + break; + case dwarf::DW_TAG_restrict_type: + // Only pointer types be marked with __restrict. There is no known flag + // for __restrict in LF_MODIFIER records. + PO |= PointerOptions::Restrict; break; default: IsModifier = false; @@ -1574,7 +1582,31 @@ if (IsModifier) BaseTy = cast(BaseTy)->getBaseType().resolve(); } + + // Check if the inner type will use an LF_POINTER record. If so, the + // qualifiers will go in the LF_POINTER record. This comes up for types like + // 'int *const' and 'int *__restrict', not the more common cases like 'const + // char *'. + if (BaseTy) { + switch (BaseTy->getTag()) { + case dwarf::DW_TAG_pointer_type: + case dwarf::DW_TAG_reference_type: + case dwarf::DW_TAG_rvalue_reference_type: + return lowerTypePointer(cast(BaseTy), PO); + case dwarf::DW_TAG_ptr_to_member_type: + return lowerTypeMemberPointer(cast(BaseTy), PO); + default: + break; + } + } + TypeIndex ModifiedTI = getTypeIndex(BaseTy); + + // Return the base type index if there aren't any modifiers. For example, the + // metadata could contain restrict wrappers around non-pointer types. + if (Mods == ModifierOptions::None) + return ModifiedTI; + ModifierRecord MR(ModifiedTI, Mods); return TypeTable.writeLeafType(MR); } Index: llvm/lib/DebugInfo/CodeView/RecordName.cpp =================================================================== --- llvm/lib/DebugInfo/CodeView/RecordName.cpp +++ llvm/lib/DebugInfo/CodeView/RecordName.cpp @@ -167,13 +167,6 @@ StringRef Class = Types.getTypeName(MI.getContainingType()); Name = formatv("{0} {1}::*", Pointee, Class); } else { - if (Ptr.isConst()) - Name.append("const "); - if (Ptr.isVolatile()) - Name.append("volatile "); - if (Ptr.isUnaligned()) - Name.append("__unaligned "); - Name.append(Types.getTypeName(Ptr.getReferentType())); if (Ptr.getMode() == PointerMode::LValueReference) @@ -182,6 +175,17 @@ Name.append("&&"); else if (Ptr.getMode() == PointerMode::Pointer) Name.append("*"); + + // Qualifiers in pointer records apply to the pointer, not the pointee, so + // they go on the right. + if (Ptr.isConst()) + Name.append(" const"); + if (Ptr.isVolatile()) + Name.append(" volatile"); + if (Ptr.isUnaligned()) + Name.append(" __unaligned"); + if (Ptr.isRestrict()) + Name.append(" __restrict"); } return Error::success(); } @@ -189,7 +193,6 @@ Error TypeNameComputer::visitKnownRecord(CVType &CVR, ModifierRecord &Mod) { uint16_t Mods = static_cast(Mod.getModifiers()); - SmallString<256> TypeName; if (Mods & uint16_t(ModifierOptions::Const)) Name.append("const "); if (Mods & uint16_t(ModifierOptions::Volatile)) Index: llvm/lib/DebugInfo/CodeView/TypeDumpVisitor.cpp =================================================================== --- llvm/lib/DebugInfo/CodeView/TypeDumpVisitor.cpp +++ llvm/lib/DebugInfo/CodeView/TypeDumpVisitor.cpp @@ -370,6 +370,7 @@ W->printNumber("IsConst", Ptr.isConst()); W->printNumber("IsVolatile", Ptr.isVolatile()); W->printNumber("IsUnaligned", Ptr.isUnaligned()); + W->printNumber("IsRestrict", Ptr.isRestrict()); W->printNumber("SizeOf", Ptr.getSize()); if (Ptr.isPointerToMember()) { Index: llvm/test/DebugInfo/COFF/type-quals.ll =================================================================== --- /dev/null +++ llvm/test/DebugInfo/COFF/type-quals.ll @@ -0,0 +1,573 @@ +; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s + +; C++ source to regenerate: +; $ cat m.cpp +; union Union { +; int * __restrict x_member; +; float * __restrict y_member; +; int* volatile __restrict m_volatile; +; }; +; +; int f(const volatile int* __restrict arg_crv) { +; Union u; +; const int *p; +; const volatile int v = 0; +; return 1; +; } +; +; void g(int& __restrict arg_ref) { +; const int x = 10; +; const char str[] = "abc"; +; } +; +; void h() { +; struct Foo { +; int a; +; int func(int x) __restrict { return 1; } +; }; +; +; Foo s = { 10 }; +; +; int* __restrict p_object = &s.a; +; +; int Foo:: * __restrict p_data_member = &Foo::a; +; +; int (Foo::* p_member_func)(int) __restrict = &Foo::func; +; } +; +; $ clang++ m.cpp -S -emit-llvm -g -gcodeview -o m.ll + + +; CHECK: CodeViewTypes [ +; CHECK: Section: .debug$T (7) +; CHECK: Magic: 0x4 +; CHECK: Modifier (0x1000) { +; CHECK: TypeLeafKind: LF_MODIFIER (0x1001) +; CHECK: ModifiedType: int (0x74) +; CHECK: Modifiers [ (0x3) +; CHECK: Const (0x1) +; CHECK: Volatile (0x2) +; CHECK: ] +; CHECK: } +; CHECK: Pointer (0x1001) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: const volatile int (0x1000) +; CHECK: PointerAttributes: 0x1100C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: Pointer (0x0) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 1 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: ArgList (0x1002) { +; CHECK: TypeLeafKind: LF_ARGLIST (0x1201) +; CHECK: NumArgs: 1 +; CHECK: Arguments [ +; CHECK: ArgType: const volatile int* __restrict (0x1001) +; CHECK: ] +; CHECK: } +; CHECK: Procedure (0x1003) { +; CHECK: TypeLeafKind: LF_PROCEDURE (0x1008) +; CHECK: ReturnType: int (0x74) +; CHECK: CallingConvention: NearC (0x0) +; CHECK: FunctionOptions [ (0x0) +; CHECK: ] +; CHECK: NumParameters: 1 +; CHECK: ArgListType: (const volatile int* __restrict) (0x1002) +; CHECK: } +; CHECK: FuncId (0x1004) { +; CHECK: TypeLeafKind: LF_FUNC_ID (0x1601) +; CHECK: ParentScope: 0x0 +; CHECK: FunctionType: int (const volatile int* __restrict) (0x1003) +; CHECK: Name: f +; CHECK: } +; CHECK: Union (0x1005) { +; CHECK: TypeLeafKind: LF_UNION (0x1506) +; CHECK: MemberCount: 0 +; CHECK: Properties [ (0x280) +; CHECK: ForwardReference (0x80) +; CHECK: HasUniqueName (0x200) +; CHECK: ] +; CHECK: FieldList: 0x0 +; CHECK: SizeOf: 0 +; CHECK: Name: Union +; CHECK: LinkageName: .?ATUnion@@ +; CHECK: } +; CHECK: Pointer (0x1006) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: int (0x74) +; CHECK: PointerAttributes: 0x1100C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: Pointer (0x0) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 1 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: Pointer (0x1007) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: float (0x40) +; CHECK: PointerAttributes: 0x1100C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: Pointer (0x0) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 1 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: Pointer (0x1008) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: int (0x74) +; CHECK: PointerAttributes: 0x1120C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: Pointer (0x0) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 1 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 1 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: FieldList (0x1009) { +; CHECK: TypeLeafKind: LF_FIELDLIST (0x1203) +; CHECK: DataMember { +; CHECK: TypeLeafKind: LF_MEMBER (0x150D) +; CHECK: AccessSpecifier: Public (0x3) +; CHECK: Type: int* __restrict (0x1006) +; CHECK: FieldOffset: 0x0 +; CHECK: Name: x_member +; CHECK: } +; CHECK: DataMember { +; CHECK: TypeLeafKind: LF_MEMBER (0x150D) +; CHECK: AccessSpecifier: Public (0x3) +; CHECK: Type: float* __restrict (0x1007) +; CHECK: FieldOffset: 0x0 +; CHECK: Name: y_member +; CHECK: } +; CHECK: DataMember { +; CHECK: TypeLeafKind: LF_MEMBER (0x150D) +; CHECK: AccessSpecifier: Public (0x3) +; CHECK: Type: int* volatile __restrict (0x1008) +; CHECK: FieldOffset: 0x0 +; CHECK: Name: m_volatile +; CHECK: } +; CHECK: } + +; CHECK: Modifier (0x100D) { +; CHECK: TypeLeafKind: LF_MODIFIER (0x1001) +; CHECK: ModifiedType: int (0x74) +; CHECK: Modifiers [ (0x1) +; CHECK: Const (0x1) +; CHECK: ] +; CHECK: } +; CHECK: Pointer (0x100E) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: const int (0x100D) +; CHECK: PointerAttributes: 0x1000C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: Pointer (0x0) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 0 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: Pointer (0x100F) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: int (0x74) +; CHECK: PointerAttributes: 0x1102C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: LValueReference (0x1) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 1 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: ArgList (0x1010) { +; CHECK: TypeLeafKind: LF_ARGLIST (0x1201) +; CHECK: NumArgs: 1 +; CHECK: Arguments [ +; CHECK: ArgType: int& __restrict (0x100F) +; CHECK: ] +; CHECK: } +; CHECK: Procedure (0x1011) { +; CHECK: TypeLeafKind: LF_PROCEDURE (0x1008) +; CHECK: ReturnType: void (0x3) +; CHECK: CallingConvention: NearC (0x0) +; CHECK: FunctionOptions [ (0x0) +; CHECK: ] +; CHECK: NumParameters: 1 +; CHECK: ArgListType: (int& __restrict) (0x1010) +; CHECK: } +; CHECK: FuncId (0x1012) { +; CHECK: TypeLeafKind: LF_FUNC_ID (0x1601) +; CHECK: ParentScope: 0x0 +; CHECK: FunctionType: void (int& __restrict) (0x1011) +; CHECK: Name: g +; CHECK: } +; CHECK: ArgList (0x1013) { +; CHECK: TypeLeafKind: LF_ARGLIST (0x1201) +; CHECK: NumArgs: 0 +; CHECK: Arguments [ +; CHECK: ] +; CHECK: } +; CHECK: Procedure (0x1014) { +; CHECK: TypeLeafKind: LF_PROCEDURE (0x1008) +; CHECK: ReturnType: void (0x3) +; CHECK: CallingConvention: NearC (0x0) +; CHECK: FunctionOptions [ (0x0) +; CHECK: ] +; CHECK: NumParameters: 0 +; CHECK: ArgListType: () (0x1013) +; CHECK: } +; CHECK: FuncId (0x1015) { +; CHECK: TypeLeafKind: LF_FUNC_ID (0x1601) +; CHECK: ParentScope: 0x0 +; CHECK: FunctionType: void () (0x1014) +; CHECK: Name: h +; CHECK: } +; CHECK: Struct (0x1016) { +; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505) +; CHECK: MemberCount: 0 +; CHECK: Properties [ (0x180) +; CHECK: ForwardReference (0x80) +; CHECK: Scoped (0x100) +; CHECK: ] +; CHECK: FieldList: 0x0 +; CHECK: DerivedFrom: 0x0 +; CHECK: VShape: 0x0 +; CHECK: SizeOf: 0 +; CHECK: Name: h::Foo +; CHECK: } +; CHECK: Pointer (0x1017) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: h::Foo (0x1016) +; CHECK: PointerAttributes: 0x1000C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: Pointer (0x0) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 0 +; CHECK: SizeOf: 8 +; CHECK: } +; CHECK: ArgList (0x1018) { +; CHECK: TypeLeafKind: LF_ARGLIST (0x1201) +; CHECK: NumArgs: 1 +; CHECK: Arguments [ +; CHECK: ArgType: int (0x74) +; CHECK: ] +; CHECK: } +; CHECK: MemberFunction (0x1019) { +; CHECK: TypeLeafKind: LF_MFUNCTION (0x1009) +; CHECK: ReturnType: int (0x74) +; CHECK: ClassType: h::Foo (0x1016) +; CHECK: ThisType: h::Foo* (0x1017) +; CHECK: CallingConvention: NearC (0x0) +; CHECK: FunctionOptions [ (0x0) +; CHECK: ] +; CHECK: NumParameters: 1 +; CHECK: ArgListType: (int) (0x1018) +; CHECK: ThisAdjustment: 0 +; CHECK: } +; CHECK: FieldList (0x101A) { +; CHECK: TypeLeafKind: LF_FIELDLIST (0x1203) +; CHECK: DataMember { +; CHECK: TypeLeafKind: LF_MEMBER (0x150D) +; CHECK: AccessSpecifier: Public (0x3) +; CHECK: Type: int (0x74) +; CHECK: FieldOffset: 0x0 +; CHECK: Name: a +; CHECK: } +; CHECK: OneMethod { +; CHECK: TypeLeafKind: LF_ONEMETHOD (0x1511) +; CHECK: AccessSpecifier: Public (0x3) +; CHECK: Type: int h::Foo::(int) (0x1019) +; CHECK: Name: func +; CHECK: } +; CHECK: } +; CHECK: Struct (0x101B) { +; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505) +; CHECK: MemberCount: 2 +; CHECK: Properties [ (0x100) +; CHECK: Scoped (0x100) +; CHECK: ] +; CHECK: FieldList: (0x101A) +; CHECK: DerivedFrom: 0x0 +; CHECK: VShape: 0x0 +; CHECK: SizeOf: 4 +; CHECK: Name: h::Foo +; CHECK: } + +; CHECK: Pointer (0x101D) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: int (0x74) +; CHECK: PointerAttributes: 0x904C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: PointerToDataMember (0x2) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 1 +; CHECK: SizeOf: 4 +; CHECK: ClassType: h::Foo (0x1016) +; CHECK: Representation: SingleInheritanceData (0x1) +; CHECK: } +; CHECK: Pointer (0x101E) { +; CHECK: TypeLeafKind: LF_POINTER (0x1002) +; CHECK: PointeeType: int h::Foo::(int) (0x1019) +; CHECK: PointerAttributes: 0x1006C +; CHECK: PtrType: Near64 (0xC) +; CHECK: PtrMode: PointerToMemberFunction (0x3) +; CHECK: IsFlat: 0 +; CHECK: IsConst: 0 +; CHECK: IsVolatile: 0 +; CHECK: IsUnaligned: 0 +; CHECK: IsRestrict: 0 +; CHECK: SizeOf: 8 +; CHECK: ClassType: h::Foo (0x1016) +; CHECK: Representation: SingleInheritanceFunction (0x5) +; CHECK: } +; CHECK: MemberFuncId (0x101F) { +; CHECK: TypeLeafKind: LF_MFUNC_ID (0x1602) +; CHECK: ClassType: h::Foo (0x1016) +; CHECK: FunctionType: int h::Foo::(int) (0x1019) +; CHECK: Name: func +; CHECK: } +; CHECK: Modifier (0x1020) { +; CHECK: TypeLeafKind: LF_MODIFIER (0x1001) +; CHECK: ModifiedType: char (0x70) +; CHECK: Modifiers [ (0x1) +; CHECK: Const (0x1) +; CHECK: ] +; CHECK: } +; CHECK: Array (0x1021) { +; CHECK: TypeLeafKind: LF_ARRAY (0x1503) +; CHECK: ElementType: const char (0x1020) +; CHECK: IndexType: unsigned __int64 (0x23) +; CHECK: SizeOf: 4 +; CHECK: Name: +; CHECK: } +; CHECK: ] + +; CHECK-LABEL: CodeViewDebugInfo [ +; CHECK-NEXT: Section: .debug$S (6) +; CHECK: Subsection [ +; CHECK: SubSectionType: Symbols (0xF1) +; CHECK: GlobalProcIdSym { +; CHECK: Kind: S_GPROC32_ID (0x1147) +; CHECK: FunctionType: f ({{.*}}) +; CHECK: CodeOffset: ?f@@YAHPEIDH@Z+0x0 +; CHECK: DisplayName: f +; CHECK: LinkageName: ?f@@YAHPEIDH@Z +; CHECK: } +; CHECK: LocalSym { +; CHECK: Kind: S_LOCAL (0x113E) +; CHECK: Type: const volatile int* __restrict (0x1001) +; CHECK: VarName: arg_crv +; CHECK: } +; CHECK: LocalSym { +; CHECK: Kind: S_LOCAL (0x113E) +; CHECK: Type: Union (0x100A) +; CHECK: VarName: u +; CHECK: } +; CHECK: LocalSym { +; CHECK: Kind: S_LOCAL (0x113E) +; CHECK: Type: const int* (0x100E) +; CHECK: VarName: p +; CHECK: } +; CHECK: LocalSym { +; CHECK: Kind: S_LOCAL (0x113E) +; CHECK: Type: const volatile int (0x1000) +; CHECK: VarName: v +; CHECK: } + +; ModuleID = 'm.cpp' +source_filename = "m.cpp" +target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-pc-windows-msvc19.11.25507" + +%struct.Foo = type { i32 } +%union.Union = type { i32* } + +@"\01?str@?1??g@@YAXAEIAH@Z@3QBDB" = internal constant [4 x i8] c"abc\00", align 1, !dbg !0 +@"\01?s@?1??h@@YAXXZ@3UFoo@?1??1@YAXXZ@A" = private unnamed_addr constant %struct.Foo { i32 10 }, align 4 + +; Function Attrs: noinline nounwind optnone uwtable +define i32 @"\01?f@@YAHPEIDH@Z"(i32* noalias %arg_crv) #0 !dbg !22 { +entry: + %arg_crv.addr = alloca i32*, align 8 + %u = alloca %union.Union, align 8 + %p = alloca i32*, align 8 + %v = alloca i32, align 4 + store i32* %arg_crv, i32** %arg_crv.addr, align 8 + call void @llvm.dbg.declare(metadata i32** %arg_crv.addr, metadata !29, metadata !DIExpression()), !dbg !30 + call void @llvm.dbg.declare(metadata %union.Union* %u, metadata !31, metadata !DIExpression()), !dbg !43 + call void @llvm.dbg.declare(metadata i32** %p, metadata !44, metadata !DIExpression()), !dbg !47 + call void @llvm.dbg.declare(metadata i32* %v, metadata !48, metadata !DIExpression()), !dbg !49 + store volatile i32 0, i32* %v, align 4, !dbg !49 + ret i32 1, !dbg !50 +} + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 + +; Function Attrs: noinline nounwind optnone uwtable +define void @"\01?g@@YAXAEIAH@Z"(i32* noalias dereferenceable(4) %arg_ref) #0 !dbg !2 { +entry: + %arg_ref.addr = alloca i32*, align 8 + %x = alloca i32, align 4 + store i32* %arg_ref, i32** %arg_ref.addr, align 8 + call void @llvm.dbg.declare(metadata i32** %arg_ref.addr, metadata !51, metadata !DIExpression()), !dbg !52 + call void @llvm.dbg.declare(metadata i32* %x, metadata !53, metadata !DIExpression()), !dbg !54 + store i32 10, i32* %x, align 4, !dbg !54 + ret void, !dbg !55 +} + +; Function Attrs: noinline nounwind optnone uwtable +define void @"\01?h@@YAXXZ"() #0 !dbg !56 { +entry: + %s = alloca %struct.Foo, align 4 + %p_object = alloca i32*, align 8 + %p_data_member = alloca i32, align 8 + %p_member_func = alloca i8*, align 8 + call void @llvm.dbg.declare(metadata %struct.Foo* %s, metadata !59, metadata !DIExpression()), !dbg !68 + %0 = bitcast %struct.Foo* %s to i8*, !dbg !68 + call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %0, i8* align 4 bitcast (%struct.Foo* @"\01?s@?1??h@@YAXXZ@3UFoo@?1??1@YAXXZ@A" to i8*), i64 4, i1 false), !dbg !68 + call void @llvm.dbg.declare(metadata i32** %p_object, metadata !69, metadata !DIExpression()), !dbg !70 + %a = getelementptr inbounds %struct.Foo, %struct.Foo* %s, i32 0, i32 0, !dbg !71 + store i32* %a, i32** %p_object, align 8, !dbg !70 + call void @llvm.dbg.declare(metadata i32* %p_data_member, metadata !72, metadata !DIExpression()), !dbg !75 + store i32 0, i32* %p_data_member, align 8, !dbg !75 + call void @llvm.dbg.declare(metadata i8** %p_member_func, metadata !76, metadata !DIExpression()), !dbg !78 + store i8* bitcast (i32 (%struct.Foo*, i32)* @"\01?func@Foo@?1??h@@YAXXZ@QEIAAHH@Z" to i8*), i8** %p_member_func, align 8, !dbg !78 + ret void, !dbg !79 +} + +; Function Attrs: argmemonly nounwind +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #2 + +; Function Attrs: noinline nounwind optnone uwtable +define internal i32 @"\01?func@Foo@?1??h@@YAXXZ@QEIAAHH@Z"(%struct.Foo* %this, i32 %x) #0 align 2 !dbg !80 { +entry: + %x.addr = alloca i32, align 4 + %this.addr = alloca %struct.Foo*, align 8 + store i32 %x, i32* %x.addr, align 4 + call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !81, metadata !DIExpression()), !dbg !82 + store %struct.Foo* %this, %struct.Foo** %this.addr, align 8 + call void @llvm.dbg.declare(metadata %struct.Foo** %this.addr, metadata !83, metadata !DIExpression()), !dbg !85 + %this1 = load %struct.Foo*, %struct.Foo** %this.addr, align 8 + ret i32 1, !dbg !86 +} + +attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "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" "no-signed-zeros-fp-math"="false" "no-trapping-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" } +attributes #1 = { nounwind readnone speculatable } +attributes #2 = { argmemonly nounwind } + +!llvm.dbg.cu = !{!9} +!llvm.module.flags = !{!17, !18, !19, !20} +!llvm.ident = !{!21} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "str", scope: !2, file: !3, line: 18, type: !12, isLocal: true, isDefinition: true) +!2 = distinct !DISubprogram(name: "g", linkageName: "\01?g@@YAXAEIAH@Z", scope: !3, file: !3, line: 16, type: !4, isLocal: false, isDefinition: true, scopeLine: 16, flags: DIFlagPrototyped, isOptimized: false, unit: !9, variables: !10) +!3 = !DIFile(filename: "m.cpp", directory: "C:\5CUsers\5CHui\5Ctmp\5Chui", checksumkind: CSK_MD5, checksum: "a8da0f4dca948db1ef1129c8728a881c") +!4 = !DISubroutineType(types: !5) +!5 = !{null, !6} +!6 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !7) +!7 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !8, size: 64) +!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !10, globals: !11) +!10 = !{} +!11 = !{!0} +!12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 32, elements: !15) +!13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !14) +!14 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) +!15 = !{!16} +!16 = !DISubrange(count: 4) +!17 = !{i32 2, !"CodeView", i32 1} +!18 = !{i32 2, !"Debug Info Version", i32 3} +!19 = !{i32 1, !"wchar_size", i32 2} +!20 = !{i32 7, !"PIC Level", i32 2} +!21 = !{!"clang version 7.0.0 "} +!22 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YAHPEIDH@Z", scope: !3, file: !3, line: 9, type: !23, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: false, unit: !9, variables: !10) +!23 = !DISubroutineType(types: !24) +!24 = !{!8, !25} +!25 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !26) +!26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !27, size: 64) +!27 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !28) +!28 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !8) +!29 = !DILocalVariable(name: "arg_crv", arg: 1, scope: !22, file: !3, line: 9, type: !25) +!30 = !DILocation(line: 9, column: 39, scope: !22) +!31 = !DILocalVariable(name: "u", scope: !22, file: !3, line: 10, type: !32) +!32 = distinct !DICompositeType(tag: DW_TAG_union_type, name: "Union", file: !3, line: 3, size: 64, flags: DIFlagTypePassByValue, elements: !33, identifier: ".?ATUnion@@") +!33 = !{!34, !37, !41} +!34 = !DIDerivedType(tag: DW_TAG_member, name: "x_member", scope: !32, file: !3, line: 4, baseType: !35, size: 64) +!35 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !36) +!36 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64) +!37 = !DIDerivedType(tag: DW_TAG_member, name: "y_member", scope: !32, file: !3, line: 5, baseType: !38, size: 64) +!38 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !39) +!39 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !40, size: 64) +!40 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) +!41 = !DIDerivedType(tag: DW_TAG_member, name: "m_volatile", scope: !32, file: !3, line: 6, baseType: !42, size: 64) +!42 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !35) +!43 = !DILocation(line: 10, column: 10, scope: !22) +!44 = !DILocalVariable(name: "p", scope: !22, file: !3, line: 11, type: !45) +!45 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !46, size: 64) +!46 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8) +!47 = !DILocation(line: 11, column: 15, scope: !22) +!48 = !DILocalVariable(name: "v", scope: !22, file: !3, line: 12, type: !27) +!49 = !DILocation(line: 12, column: 23, scope: !22) +!50 = !DILocation(line: 13, column: 4, scope: !22) +!51 = !DILocalVariable(name: "arg_ref", arg: 1, scope: !2, file: !3, line: 16, type: !6) +!52 = !DILocation(line: 16, column: 25, scope: !2) +!53 = !DILocalVariable(name: "x", scope: !2, file: !3, line: 17, type: !46) +!54 = !DILocation(line: 17, column: 14, scope: !2) +!55 = !DILocation(line: 19, column: 2, scope: !2) +!56 = distinct !DISubprogram(name: "h", linkageName: "\01?h@@YAXXZ", scope: !3, file: !3, line: 21, type: !57, isLocal: false, isDefinition: true, scopeLine: 21, flags: DIFlagPrototyped, isOptimized: false, unit: !9, variables: !10) +!57 = !DISubroutineType(types: !58) +!58 = !{null} +!59 = !DILocalVariable(name: "s", scope: !56, file: !3, line: 27, type: !60) +!60 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", scope: !56, file: !3, line: 22, size: 32, flags: DIFlagTypePassByValue, elements: !61) +!61 = !{!62, !63} +!62 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !60, file: !3, line: 23, baseType: !8, size: 32) +!63 = !DISubprogram(name: "func", scope: !60, file: !3, line: 24, type: !64, isLocal: false, isDefinition: false, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false) +!64 = !DISubroutineType(types: !65) +!65 = !{!8, !66, !8} + +; FIXME: Clang emits wrong debug info here because of PR17747. We should +; regenerate this IR when it is fixed. +!66 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !67, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) +!67 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !60) + +!68 = !DILocation(line: 27, column: 8, scope: !56) +!69 = !DILocalVariable(name: "p_object", scope: !56, file: !3, line: 29, type: !35) +!70 = !DILocation(line: 29, column: 20, scope: !56) +!71 = !DILocation(line: 29, column: 34, scope: !56) +!72 = !DILocalVariable(name: "p_data_member", scope: !56, file: !3, line: 31, type: !73) +!73 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !74) +!74 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !8, size: 32, flags: DIFlagSingleInheritance, extraData: !60) +!75 = !DILocation(line: 31, column: 27, scope: !56) +!76 = !DILocalVariable(name: "p_member_func", scope: !56, file: !3, line: 33, type: !77) +!77 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !64, size: 64, flags: DIFlagSingleInheritance, extraData: !60) +!78 = !DILocation(line: 33, column: 16, scope: !56) +!79 = !DILocation(line: 34, column: 2, scope: !56) +!80 = distinct !DISubprogram(name: "func", linkageName: "\01?func@Foo@?1??h@@YAXXZ@QEIAAHH@Z", scope: !60, file: !3, line: 24, type: !64, isLocal: true, isDefinition: true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false, unit: !9, declaration: !63, variables: !10) +!81 = !DILocalVariable(name: "x", arg: 2, scope: !80, file: !3, line: 24, type: !8) +!82 = !DILocation(line: 24, column: 19, scope: !80) +!83 = !DILocalVariable(name: "this", arg: 1, scope: !80, type: !84, flags: DIFlagArtificial | DIFlagObjectPointer) +!84 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !67, size: 64) +!85 = !DILocation(line: 0, scope: !80) +!86 = !DILocation(line: 24, column: 35, scope: !80)