Index: llvm/trunk/include/llvm/DebugInfo/CodeView/TypeRecord.h
===================================================================
--- llvm/trunk/include/llvm/DebugInfo/CodeView/TypeRecord.h
+++ llvm/trunk/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<MemberPointerInfo> MemberInfo;
Index: llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h
===================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h
+++ llvm/trunk/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/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
===================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -1268,6 +1268,7 @@
return lowerTypePointer(cast<DIDerivedType>(Ty));
case dwarf::DW_TAG_ptr_to_member_type:
return lowerTypeMemberPointer(cast<DIDerivedType>(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<DISubroutineType>(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<DIDerivedType>(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<DIDerivedType>(BaseTy), PO);
+ case dwarf::DW_TAG_ptr_to_member_type:
+ return lowerTypeMemberPointer(cast<DIDerivedType>(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/trunk/lib/DebugInfo/CodeView/RecordName.cpp
===================================================================
--- llvm/trunk/lib/DebugInfo/CodeView/RecordName.cpp
+++ llvm/trunk/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();
}
Index: llvm/trunk/lib/DebugInfo/CodeView/TypeDumpVisitor.cpp
===================================================================
--- llvm/trunk/lib/DebugInfo/CodeView/TypeDumpVisitor.cpp
+++ llvm/trunk/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/trunk/test/DebugInfo/COFF/type-quals.ll
===================================================================
--- llvm/trunk/test/DebugInfo/COFF/type-quals.ll
+++ llvm/trunk/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: <field list> (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)