[llvm] r271408 - [codeview] Translate basic DITypes to CV type records
Reid Kleckner via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 1 10:05:54 PDT 2016
Author: rnk
Date: Wed Jun 1 12:05:51 2016
New Revision: 271408
URL: http://llvm.org/viewvc/llvm-project?rev=271408&view=rev
Log:
[codeview] Translate basic DITypes to CV type records
Summary:
This is meant to be the tiniest step towards DIType to CV type index
translation that I could come up with. Whenever translation fails, we use type
index zero, which is the unknown type.
Reviewers: aaboud, zturner
Subscribers: llvm-commits, amccarth
Differential Revision: http://reviews.llvm.org/D20840
Added:
llvm/trunk/test/DebugInfo/COFF/types-basic.ll
Modified:
llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h
llvm/trunk/test/DebugInfo/COFF/inlining.ll
Modified: llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp?rev=271408&r1=271407&r2=271408&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp Wed Jun 1 12:05:51 2016
@@ -230,8 +230,6 @@ void CodeViewDebug::endModule() {
if (FnDebugInfo.empty())
return;
- emitTypeInformation();
-
assert(Asm != nullptr);
// The COFF .debug$S section consists of several subsections, each starting
@@ -258,6 +256,10 @@ void CodeViewDebug::endModule() {
OS.AddComment("String table");
OS.EmitCVStringTableDirective();
+ // Emit type information last, so that any types we translate while emitting
+ // function info are included.
+ emitTypeInformation();
+
clear();
}
@@ -726,6 +728,214 @@ void CodeViewDebug::beginFunction(const
}
}
+TypeIndex CodeViewDebug::lowerType(const DIType *Ty) {
+ // Generic dispatch for lowering an unknown type.
+ switch (Ty->getTag()) {
+ case dwarf::DW_TAG_base_type:
+ return lowerTypeBasic(cast<DIBasicType>(Ty));
+ case dwarf::DW_TAG_pointer_type:
+ case dwarf::DW_TAG_reference_type:
+ case dwarf::DW_TAG_rvalue_reference_type:
+ return lowerTypePointer(cast<DIDerivedType>(Ty));
+ case dwarf::DW_TAG_ptr_to_member_type:
+ return lowerTypeMemberPointer(cast<DIDerivedType>(Ty));
+ case dwarf::DW_TAG_const_type:
+ case dwarf::DW_TAG_volatile_type:
+ return lowerTypeModifier(cast<DIDerivedType>(Ty));
+ default:
+ // Use the null type index.
+ return TypeIndex();
+ }
+}
+
+TypeIndex CodeViewDebug::lowerTypeBasic(const DIBasicType *Ty) {
+ TypeIndex Index;
+ dwarf::TypeKind Kind;
+ uint32_t ByteSize;
+
+ Kind = static_cast<dwarf::TypeKind>(Ty->getEncoding());
+ ByteSize = Ty->getSizeInBits() >> 3;
+
+ SimpleTypeKind STK = SimpleTypeKind::None;
+ switch (Kind) {
+ case dwarf::DW_ATE_address:
+ // FIXME: Translate
+ break;
+ case dwarf::DW_ATE_boolean:
+ switch (ByteSize) {
+ case 1: STK = SimpleTypeKind::Boolean8; break;
+ case 2: STK = SimpleTypeKind::Boolean16; break;
+ case 4: STK = SimpleTypeKind::Boolean32; break;
+ case 8: STK = SimpleTypeKind::Boolean64; break;
+ }
+ break;
+ case dwarf::DW_ATE_complex_float:
+ switch (ByteSize) {
+ case 4: STK = SimpleTypeKind::Complex32; break;
+ case 8: STK = SimpleTypeKind::Complex64; break;
+ case 10: STK = SimpleTypeKind::Complex80; break;
+ case 16: STK = SimpleTypeKind::Complex128; break;
+ }
+ break;
+ case dwarf::DW_ATE_float:
+ switch (ByteSize) {
+ case 4: STK = SimpleTypeKind::Float32; break;
+ case 6: STK = SimpleTypeKind::Float48; break;
+ case 8: STK = SimpleTypeKind::Float64; break;
+ case 10: STK = SimpleTypeKind::Float80; break;
+ case 16: STK = SimpleTypeKind::Float128; break;
+ }
+ break;
+ case dwarf::DW_ATE_signed:
+ switch (ByteSize) {
+ case 1: STK = SimpleTypeKind::SByte; break;
+ case 2: STK = SimpleTypeKind::Int16Short; break;
+ case 4: STK = SimpleTypeKind::Int32; break;
+ case 8: STK = SimpleTypeKind::Int64; break;
+ }
+ break;
+ case dwarf::DW_ATE_unsigned:
+ switch (ByteSize) {
+ case 1: STK = SimpleTypeKind::Byte; break;
+ case 2: STK = SimpleTypeKind::UInt16Short; break;
+ case 4: STK = SimpleTypeKind::UInt32; break;
+ case 8: STK = SimpleTypeKind::UInt64; break;
+ }
+ break;
+ case dwarf::DW_ATE_UTF:
+ switch (ByteSize) {
+ case 2: STK = SimpleTypeKind::Character16; break;
+ case 4: STK = SimpleTypeKind::Character32; break;
+ }
+ break;
+ case dwarf::DW_ATE_signed_char:
+ if (ByteSize == 1)
+ STK = SimpleTypeKind::SignedCharacter;
+ break;
+ case dwarf::DW_ATE_unsigned_char:
+ if (ByteSize == 1)
+ STK = SimpleTypeKind::UnsignedCharacter;
+ break;
+ default:
+ break;
+ }
+
+ // Apply some fixups based on the source-level type name.
+ if (STK == SimpleTypeKind::Int32 && Ty->getName() == "long int")
+ STK = SimpleTypeKind::Int32Long;
+ if (STK == SimpleTypeKind::UInt32 && Ty->getName() == "long unsigned int")
+ STK = SimpleTypeKind::UInt32Long;
+ if ((STK == SimpleTypeKind::Int16Short ||
+ STK == SimpleTypeKind::UInt16Short) &&
+ Ty->getName() == "wchar_t")
+ STK = SimpleTypeKind::WideCharacter;
+ if ((STK == SimpleTypeKind::SignedCharacter ||
+ STK == SimpleTypeKind::UnsignedCharacter) &&
+ Ty->getName() == "char")
+ STK = SimpleTypeKind::NarrowCharacter;
+
+ return TypeIndex(STK);
+}
+
+TypeIndex CodeViewDebug::lowerTypePointer(const DIDerivedType *Ty) {
+ TypeIndex PointeeTI = getTypeIndex(Ty->getBaseType());
+
+ // Pointers to simple types can use SimpleTypeMode, rather than having a
+ // dedicated pointer type record.
+ if (PointeeTI.isSimple() &&
+ PointeeTI.getSimpleMode() == SimpleTypeMode::Direct &&
+ Ty->getTag() == dwarf::DW_TAG_pointer_type) {
+ SimpleTypeMode Mode = Ty->getSizeInBits() == 64
+ ? SimpleTypeMode::NearPointer64
+ : SimpleTypeMode::NearPointer32;
+ return TypeIndex(PointeeTI.getSimpleKind(), Mode);
+ }
+
+ PointerKind PK =
+ Ty->getSizeInBits() == 64 ? PointerKind::Near64 : PointerKind::Near32;
+ PointerMode PM = PointerMode::Pointer;
+ switch (Ty->getTag()) {
+ default: llvm_unreachable("not a pointer tag type");
+ case dwarf::DW_TAG_pointer_type:
+ PM = PointerMode::Pointer;
+ break;
+ case dwarf::DW_TAG_reference_type:
+ PM = PointerMode::LValueReference;
+ break;
+ case dwarf::DW_TAG_rvalue_reference_type:
+ 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.writePointer(PR);
+}
+
+TypeIndex CodeViewDebug::lowerTypeMemberPointer(const DIDerivedType *Ty) {
+ assert(Ty->getTag() == dwarf::DW_TAG_ptr_to_member_type);
+ TypeIndex ClassTI = getTypeIndex(Ty->getClassType());
+ TypeIndex PointeeTI = getTypeIndex(Ty->getBaseType());
+ PointerKind PK = Asm->MAI->getPointerSize() == 8 ? PointerKind::Near64
+ : PointerKind::Near32;
+ PointerMode PM = isa<DISubroutineType>(Ty->getBaseType())
+ ? PointerMode::PointerToMemberFunction
+ : PointerMode::PointerToDataMember;
+ PointerOptions PO = PointerOptions::None; // FIXME
+ // FIXME: Thread this ABI info through metadata.
+ PointerToMemberRepresentation PMR = PointerToMemberRepresentation::Unknown;
+ MemberPointerInfo MPI(ClassTI, PMR);
+ PointerRecord PR(PointeeTI, PK, PM, PO, Ty->getSizeInBits() / 8, MPI);
+ return TypeTable.writePointer(PR);
+}
+
+TypeIndex CodeViewDebug::lowerTypeModifier(const DIDerivedType *Ty) {
+ ModifierOptions Mods = ModifierOptions::None;
+ bool IsModifier = true;
+ const DIType *BaseTy = Ty;
+ while (IsModifier) {
+ assert(BaseTy);
+ // FIXME: Need to add DWARF tag for __unaligned.
+ switch (BaseTy->getTag()) {
+ case dwarf::DW_TAG_const_type:
+ Mods |= ModifierOptions::Const;
+ break;
+ case dwarf::DW_TAG_volatile_type:
+ Mods |= ModifierOptions::Volatile;
+ break;
+ default:
+ IsModifier = false;
+ break;
+ }
+ if (IsModifier)
+ BaseTy = cast<DIDerivedType>(BaseTy)->getBaseType().resolve();
+ }
+ TypeIndex ModifiedTI = getTypeIndex(BaseTy);
+ ModifierRecord MR(ModifiedTI, Mods);
+ return TypeTable.writeModifier(MR);
+}
+
+TypeIndex CodeViewDebug::getTypeIndex(DITypeRef TypeRef) {
+ const DIType *Ty = TypeRef.resolve();
+
+ // The null DIType is the void type. Don't try to hash it.
+ if (!Ty)
+ return TypeIndex::Void();
+
+ // Check if we've already translated this type.
+ auto I = TypeIndices.find(Ty);
+ if (I != TypeIndices.end())
+ return I->second;
+
+ TypeIndex TI = lowerType(Ty);
+
+ auto InsertResult = TypeIndices.insert({Ty, TI});
+ assert(InsertResult.second && "DIType lowered twice");
+ return TI;
+}
+
void CodeViewDebug::emitLocalVariable(const LocalVariable &Var) {
// LocalSym record, see SymbolRecord.h for more info.
MCSymbol *LocalBegin = MMI->getContext().createTempSymbol(),
@@ -744,7 +954,8 @@ void CodeViewDebug::emitLocalVariable(co
Flags |= LocalSymFlags::IsOptimizedOut;
OS.AddComment("TypeIndex");
- OS.EmitIntValue(TypeIndex::Int32().getIndex(), 4);
+ TypeIndex TI = getTypeIndex(Var.DIVar->getType());
+ OS.EmitIntValue(TI.getIndex(), 4);
OS.AddComment("Flags");
OS.EmitIntValue(static_cast<uint16_t>(Flags), 2);
// Truncate the name so we won't overflow the record length field.
Modified: llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h?rev=271408&r1=271407&r2=271408&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.h Wed Jun 1 12:05:51 2016
@@ -185,6 +185,16 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDe
void emitLocalVariable(const LocalVariable &Var);
+ /// Translates the DIType to codeview if necessary and returns a type index
+ /// for it.
+ codeview::TypeIndex getTypeIndex(DITypeRef Ty);
+
+ codeview::TypeIndex lowerType(const DIType *Ty);
+ codeview::TypeIndex lowerTypeBasic(const DIBasicType *Ty);
+ codeview::TypeIndex lowerTypePointer(const DIDerivedType *Ty);
+ codeview::TypeIndex lowerTypeMemberPointer(const DIDerivedType *Ty);
+ codeview::TypeIndex lowerTypeModifier(const DIDerivedType *Ty);
+
public:
CodeViewDebug(AsmPrinter *Asm);
Modified: llvm/trunk/test/DebugInfo/COFF/inlining.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/COFF/inlining.ll?rev=271408&r1=271407&r2=271408&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/COFF/inlining.ll (original)
+++ llvm/trunk/test/DebugInfo/COFF/inlining.ll Wed Jun 1 12:05:51 2016
@@ -39,6 +39,36 @@
; ASM: addl $7, "?x@@3HC"
; ASM: .cv_loc 0 1 17 1 # t.cpp:17:1
+; ASM: .section .debug$S,"dr"
+; ASM: .long 246 # Inlinee lines subsection
+; ASM: .long [[inline_end:.*]]-[[inline_beg:.*]] #
+; ASM: [[inline_beg]]:
+; ASM: .long 0
+; ASM: # Inlined function bar starts at t.cpp:8
+; ASM: .long 4098 # Type index of inlined function
+; ASM: .long 0 # Offset into filechecksum table
+; ASM: .long 8 # Starting line number
+; ASM: # Inlined function foo starts at t.cpp:2
+; ASM: .long 4099
+; ASM: .long 0
+; ASM: .long 2
+; ASM: [[inline_end]]:
+
+; ASM: .long 241 # Symbol subsection for baz
+; ASM: .long {{.*}} # Subsection size
+; ASM: .short 4429
+; ASM: .long
+; ASM: .long
+; ASM: .long
+; ASM: .cv_inline_linetable 1 1 8 Lfunc_begin0 Lfunc_end0 contains 2
+; ASM: .short 4429
+; ASM: .long
+; ASM: .long
+; ASM: .long
+; ASM: .cv_inline_linetable 2 1 2 Lfunc_begin0 Lfunc_end0
+; ASM: .short 4430
+; ASM: .short 4430
+
; ASM: .section .debug$T,"dr"
; ASM: .long 4 # Debug section magic
; ASM: # ArgList (0x1000) {
@@ -83,39 +113,9 @@
; ASM: .byte 0x01, 0x10, 0x00, 0x00
; ASM: .byte 0x66, 0x6f, 0x6f, 0x00
-; ASM: .section .debug$S,"dr"
-; ASM: .long 246 # Inlinee lines subsection
-; ASM: .long [[inline_end:.*]]-[[inline_beg:.*]] #
-; ASM: [[inline_beg]]:
-; ASM: .long 0
-; ASM: # Inlined function bar starts at t.cpp:8
-; ASM: .long 4098 # Type index of inlined function
-; ASM: .long 0 # Offset into filechecksum table
-; ASM: .long 8 # Starting line number
-; ASM: # Inlined function foo starts at t.cpp:2
-; ASM: .long 4099
-; ASM: .long 0
-; ASM: .long 2
-; ASM: [[inline_end]]:
-
-; ASM: .long 241 # Symbol subsection for baz
-; ASM: .long {{.*}} # Subsection size
-; ASM: .short 4429
-; ASM: .long
-; ASM: .long
-; ASM: .long
-; ASM: .cv_inline_linetable 1 1 8 Lfunc_begin0 Lfunc_end0 contains 2
-; ASM: .short 4429
-; ASM: .long
-; ASM: .long
-; ASM: .long
-; ASM: .cv_inline_linetable 2 1 2 Lfunc_begin0 Lfunc_end0
-; ASM: .short 4430
-; ASM: .short 4430
-
; We should only the LF_FUNC_ID records that we needed to reference.
; OBJ: CodeViewTypes [
-; OBJ: Section: .debug$T (4)
+; OBJ: Section: .debug$T
; OBJ: ArgList (0x1000) {
; OBJ: TypeLeafKind: LF_ARGLIST (0x1201)
; OBJ: NumArgs: 0
Added: llvm/trunk/test/DebugInfo/COFF/types-basic.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/COFF/types-basic.ll?rev=271408&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/COFF/types-basic.ll (added)
+++ llvm/trunk/test/DebugInfo/COFF/types-basic.ll Wed Jun 1 12:05:51 2016
@@ -0,0 +1,400 @@
+; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s
+
+; C++ source to regenerate:
+; $ cat t.cpp
+; struct A {
+; int a;
+; void f();
+; };
+; void usevars(int, ...);
+; void f(float p1, double p2, long long p3) {
+; int v1 = p3;
+; int *v2 = &v1;
+; const int *v21 = &v1;
+; void *v3 = &v1;
+; int A::*v4 = &A::a;
+; void (A::*v5)() = &A::f;
+; long l1 = 0;
+; long int l2 = 0;
+; unsigned long l3 = 0;
+; unsigned long int l4 = 0;
+; usevars(v1, v2, v3, l1, l2, l3, l4);
+; }
+; void CharTypes() {
+; signed wchar_t w;
+; unsigned short us;
+; char c;
+; unsigned char uc;
+; signed char sc;
+; char16_t c16;
+; char32_t c32;
+; }
+; $ clang t.cpp -S -emit-llvm -g -gcodeview -o t.ll
+
+; CHECK: CodeViewTypes [
+; CHECK: Modifier (0x1000) {
+; CHECK: TypeLeafKind: LF_MODIFIER (0x1001)
+; CHECK: ModifiedType: int (0x74)
+; CHECK: Modifiers [ (0x1)
+; CHECK: Const (0x1)
+; CHECK: ]
+; CHECK: }
+; CHECK: Pointer (0x1001) {
+; CHECK: TypeLeafKind: LF_POINTER (0x1002)
+; CHECK: PointeeType: const int (0x1000)
+; CHECK: PointerAttributes: 0x1000C
+; CHECK: PtrType: Near64 (0xC)
+; CHECK: PtrMode: Pointer (0x0)
+; CHECK: IsFlat: 0
+; CHECK: IsConst: 0
+; CHECK: IsVolatile: 0
+; CHECK: IsUnaligned: 0
+; CHECK: }
+; CHECK: Pointer (0x1002) {
+; CHECK: TypeLeafKind: LF_POINTER (0x1002)
+; CHECK: PointeeType: int (0x74)
+; CHECK: PointerAttributes: 0x804C
+; CHECK: PtrType: Near64 (0xC)
+; CHECK: PtrMode: PointerToDataMember (0x2)
+; CHECK: IsFlat: 0
+; CHECK: IsConst: 0
+; CHECK: IsVolatile: 0
+; CHECK: IsUnaligned: 0
+; CHECK: ClassType: 0x0
+; CHECK: Representation: Unknown (0x0)
+; CHECK: }
+; CHECK: Pointer (0x1003) {
+; CHECK: TypeLeafKind: LF_POINTER (0x1002)
+; CHECK: PointeeType: 0x0
+; CHECK: PointerAttributes: 0x1006C
+; CHECK: PtrType: Near64 (0xC)
+; CHECK: PtrMode: PointerToMemberFunction (0x3)
+; CHECK: IsFlat: 0
+; CHECK: IsConst: 0
+; CHECK: IsVolatile: 0
+; CHECK: IsUnaligned: 0
+; CHECK: ClassType: 0x0
+; CHECK: Representation: Unknown (0x0)
+; CHECK: }
+; CHECK: ]
+; CHECK: CodeViewDebugInfo [
+; CHECK: Subsection [
+; CHECK: SubSectionType: Symbols (0xF1)
+; CHECK: ProcStart {
+; CHECK: DbgStart: 0x0
+; CHECK: DbgEnd: 0x0
+; CHECK: FunctionType: 0x0
+; CHECK: CodeOffset: ?f@@YAXMN_J at Z+0x0
+; CHECK: Segment: 0x0
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: DisplayName: f
+; CHECK: LinkageName: ?f@@YAXMN_J at Z
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: __int64 (0x76)
+; CHECK: Flags [ (0x1)
+; CHECK: IsParameter (0x1)
+; CHECK: ]
+; CHECK: VarName: p3
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: double (0x41)
+; CHECK: Flags [ (0x1)
+; CHECK: IsParameter (0x1)
+; CHECK: ]
+; CHECK: VarName: p2
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: float (0x40)
+; CHECK: Flags [ (0x1)
+; CHECK: IsParameter (0x1)
+; CHECK: ]
+; CHECK: VarName: p1
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: int (0x74)
+; CHECK: VarName: v1
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: int* (0x674)
+; CHECK: VarName: v2
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: const int* (0x1001)
+; CHECK: VarName: v21
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: void* (0x603)
+; CHECK: VarName: v3
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: int <no type>::* (0x1002)
+; CHECK: VarName: v4
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: <no type> <no type>::* (0x1003)
+; CHECK: VarName: v5
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: long (0x12)
+; CHECK: VarName: l1
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: long (0x12)
+; CHECK: VarName: l2
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: unsigned long (0x22)
+; CHECK: VarName: l3
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: unsigned long (0x22)
+; CHECK: VarName: l4
+; CHECK: }
+; CHECK: ProcEnd {
+; CHECK: }
+; CHECK: ]
+; CHECK: Subsection [
+; CHECK: ProcStart {
+; CHECK: DisplayName: CharTypes
+; CHECK: LinkageName: ?CharTypes@@YAXXZ
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: wchar_t (0x71)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: w
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: unsigned short (0x21)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: us
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: char (0x70)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: c
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: unsigned char (0x20)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: uc
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: signed char (0x10)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: sc
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: char16_t (0x7A)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: c16
+; CHECK: }
+; CHECK: Local {
+; CHECK: Type: char32_t (0x7B)
+; CHECK: Flags [ (0x0)
+; CHECK: ]
+; CHECK: VarName: c32
+; CHECK: }
+; CHECK: ProcEnd {
+; CHECK: }
+; CHECK: ]
+; CHECK: ]
+
+; ModuleID = 't.cpp'
+source_filename = "t.cpp"
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc19.0.23918"
+
+%struct.A = type { i32 }
+
+; Function Attrs: uwtable
+define void @"\01?f@@YAXMN_J at Z"(float %p1, double %p2, i64 %p3) #0 !dbg !7 {
+entry:
+ %p3.addr = alloca i64, align 8
+ %p2.addr = alloca double, align 8
+ %p1.addr = alloca float, align 4
+ %v1 = alloca i32, align 4
+ %v2 = alloca i32*, align 8
+ %v21 = alloca i32*, align 8
+ %v3 = alloca i8*, align 8
+ %v4 = alloca i32, align 8
+ %v5 = alloca i8*, align 8
+ %l1 = alloca i32, align 4
+ %l2 = alloca i32, align 4
+ %l3 = alloca i32, align 4
+ %l4 = alloca i32, align 4
+ store i64 %p3, i64* %p3.addr, align 8
+ call void @llvm.dbg.declare(metadata i64* %p3.addr, metadata !13, metadata !14), !dbg !15
+ store double %p2, double* %p2.addr, align 8
+ call void @llvm.dbg.declare(metadata double* %p2.addr, metadata !16, metadata !14), !dbg !17
+ store float %p1, float* %p1.addr, align 4
+ call void @llvm.dbg.declare(metadata float* %p1.addr, metadata !18, metadata !14), !dbg !19
+ call void @llvm.dbg.declare(metadata i32* %v1, metadata !20, metadata !14), !dbg !22
+ %0 = load i64, i64* %p3.addr, align 8, !dbg !23
+ %conv = trunc i64 %0 to i32, !dbg !23
+ store i32 %conv, i32* %v1, align 4, !dbg !22
+ call void @llvm.dbg.declare(metadata i32** %v2, metadata !24, metadata !14), !dbg !26
+ store i32* %v1, i32** %v2, align 8, !dbg !26
+ call void @llvm.dbg.declare(metadata i32** %v21, metadata !27, metadata !14), !dbg !30
+ store i32* %v1, i32** %v21, align 8, !dbg !30
+ call void @llvm.dbg.declare(metadata i8** %v3, metadata !31, metadata !14), !dbg !33
+ %1 = bitcast i32* %v1 to i8*, !dbg !34
+ store i8* %1, i8** %v3, align 8, !dbg !33
+ call void @llvm.dbg.declare(metadata i32* %v4, metadata !35, metadata !14), !dbg !44
+ store i32 0, i32* %v4, align 8, !dbg !44
+ call void @llvm.dbg.declare(metadata i8** %v5, metadata !45, metadata !14), !dbg !47
+ store i8* bitcast (void (%struct.A*)* @"\01?f at A@@QEAAXXZ" to i8*), i8** %v5, align 8, !dbg !47
+ call void @llvm.dbg.declare(metadata i32* %l1, metadata !48, metadata !14), !dbg !50
+ store i32 0, i32* %l1, align 4, !dbg !50
+ call void @llvm.dbg.declare(metadata i32* %l2, metadata !51, metadata !14), !dbg !52
+ store i32 0, i32* %l2, align 4, !dbg !52
+ call void @llvm.dbg.declare(metadata i32* %l3, metadata !53, metadata !14), !dbg !55
+ store i32 0, i32* %l3, align 4, !dbg !55
+ call void @llvm.dbg.declare(metadata i32* %l4, metadata !56, metadata !14), !dbg !57
+ store i32 0, i32* %l4, align 4, !dbg !57
+ %2 = load i32, i32* %l4, align 4, !dbg !58
+ %3 = load i32, i32* %l3, align 4, !dbg !59
+ %4 = load i32, i32* %l2, align 4, !dbg !60
+ %5 = load i32, i32* %l1, align 4, !dbg !61
+ %6 = load i8*, i8** %v3, align 8, !dbg !62
+ %7 = load i32*, i32** %v2, align 8, !dbg !63
+ %8 = load i32, i32* %v1, align 4, !dbg !64
+ call void (i32, ...) @"\01?usevars@@YAXHZZ"(i32 %8, i32* %7, i8* %6, i32 %5, i32 %4, i32 %3, i32 %2), !dbg !65
+ ret void, !dbg !66
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+declare void @"\01?f at A@@QEAAXXZ"(%struct.A*) #2
+
+declare void @"\01?usevars@@YAXHZZ"(i32, ...) #2
+
+; Function Attrs: nounwind uwtable
+define void @"\01?CharTypes@@YAXXZ"() #3 !dbg !67 {
+entry:
+ %w = alloca i16, align 2
+ %us = alloca i16, align 2
+ %c = alloca i8, align 1
+ %uc = alloca i8, align 1
+ %sc = alloca i8, align 1
+ %c16 = alloca i16, align 2
+ %c32 = alloca i32, align 4
+ call void @llvm.dbg.declare(metadata i16* %w, metadata !70, metadata !14), !dbg !72
+ call void @llvm.dbg.declare(metadata i16* %us, metadata !73, metadata !14), !dbg !75
+ call void @llvm.dbg.declare(metadata i8* %c, metadata !76, metadata !14), !dbg !78
+ call void @llvm.dbg.declare(metadata i8* %uc, metadata !79, metadata !14), !dbg !81
+ call void @llvm.dbg.declare(metadata i8* %sc, metadata !82, metadata !14), !dbg !84
+ call void @llvm.dbg.declare(metadata i16* %c16, metadata !85, metadata !14), !dbg !87
+ call void @llvm.dbg.declare(metadata i32* %c32, metadata !88, metadata !14), !dbg !90
+ ret void, !dbg !91
+}
+
+attributes #0 = { 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" }
+attributes #1 = { nounwind readnone }
+attributes #2 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="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" }
+attributes #3 = { 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" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5}
+!llvm.ident = !{!6}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 271336) (llvm/trunk 271339)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
+!1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
+!2 = !{}
+!3 = !{i32 2, !"CodeView", i32 1}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"PIC Level", i32 2}
+!6 = !{!"clang version 3.9.0 (trunk 271336) (llvm/trunk 271339)"}
+!7 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YAXMN_J at Z", scope: !1, file: !1, line: 6, type: !8, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!8 = !DISubroutineType(types: !9)
+!9 = !{null, !10, !11, !12}
+!10 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
+!11 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
+!12 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
+!13 = !DILocalVariable(name: "p3", arg: 3, scope: !7, file: !1, line: 6, type: !12)
+!14 = !DIExpression()
+!15 = !DILocation(line: 6, column: 39, scope: !7)
+!16 = !DILocalVariable(name: "p2", arg: 2, scope: !7, file: !1, line: 6, type: !11)
+!17 = !DILocation(line: 6, column: 25, scope: !7)
+!18 = !DILocalVariable(name: "p1", arg: 1, scope: !7, file: !1, line: 6, type: !10)
+!19 = !DILocation(line: 6, column: 14, scope: !7)
+!20 = !DILocalVariable(name: "v1", scope: !7, file: !1, line: 7, type: !21)
+!21 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!22 = !DILocation(line: 7, column: 7, scope: !7)
+!23 = !DILocation(line: 7, column: 12, scope: !7)
+!24 = !DILocalVariable(name: "v2", scope: !7, file: !1, line: 8, type: !25)
+!25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64, align: 64)
+!26 = !DILocation(line: 8, column: 8, scope: !7)
+!27 = !DILocalVariable(name: "v21", scope: !7, file: !1, line: 9, type: !28)
+!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64, align: 64)
+!29 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !21)
+!30 = !DILocation(line: 9, column: 14, scope: !7)
+!31 = !DILocalVariable(name: "v3", scope: !7, file: !1, line: 10, type: !32)
+!32 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64, align: 64)
+!33 = !DILocation(line: 10, column: 9, scope: !7)
+!34 = !DILocation(line: 10, column: 14, scope: !7)
+!35 = !DILocalVariable(name: "v4", scope: !7, file: !1, line: 11, type: !36)
+!36 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !21, size: 32, extraData: !37)
+!37 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 32, align: 32, elements: !38)
+!38 = !{!39, !40}
+!39 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !37, file: !1, line: 2, baseType: !21, size: 32, align: 32)
+!40 = !DISubprogram(name: "A::f", linkageName: "\01?f at A@@QEAAXXZ", scope: !37, file: !1, line: 3, type: !41, isLocal: false, isDefinition: false, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false)
+!41 = !DISubroutineType(types: !42)
+!42 = !{null, !43}
+!43 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !37, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!44 = !DILocation(line: 11, column: 11, scope: !7)
+!45 = !DILocalVariable(name: "v5", scope: !7, file: !1, line: 12, type: !46)
+!46 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !41, size: 64, extraData: !37)
+!47 = !DILocation(line: 12, column: 13, scope: !7)
+!48 = !DILocalVariable(name: "l1", scope: !7, file: !1, line: 13, type: !49)
+!49 = !DIBasicType(name: "long int", size: 32, align: 32, encoding: DW_ATE_signed)
+!50 = !DILocation(line: 13, column: 8, scope: !7)
+!51 = !DILocalVariable(name: "l2", scope: !7, file: !1, line: 14, type: !49)
+!52 = !DILocation(line: 14, column: 12, scope: !7)
+!53 = !DILocalVariable(name: "l3", scope: !7, file: !1, line: 15, type: !54)
+!54 = !DIBasicType(name: "long unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
+!55 = !DILocation(line: 15, column: 17, scope: !7)
+!56 = !DILocalVariable(name: "l4", scope: !7, file: !1, line: 16, type: !54)
+!57 = !DILocation(line: 16, column: 21, scope: !7)
+!58 = !DILocation(line: 17, column: 35, scope: !7)
+!59 = !DILocation(line: 17, column: 31, scope: !7)
+!60 = !DILocation(line: 17, column: 27, scope: !7)
+!61 = !DILocation(line: 17, column: 23, scope: !7)
+!62 = !DILocation(line: 17, column: 19, scope: !7)
+!63 = !DILocation(line: 17, column: 15, scope: !7)
+!64 = !DILocation(line: 17, column: 11, scope: !7)
+!65 = !DILocation(line: 17, column: 3, scope: !7)
+!66 = !DILocation(line: 18, column: 1, scope: !7)
+!67 = distinct !DISubprogram(name: "CharTypes", linkageName: "\01?CharTypes@@YAXXZ", scope: !1, file: !1, line: 19, type: !68, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!68 = !DISubroutineType(types: !69)
+!69 = !{null}
+!70 = !DILocalVariable(name: "w", scope: !67, file: !1, line: 20, type: !71)
+!71 = !DIBasicType(name: "wchar_t", size: 16, align: 16, encoding: DW_ATE_unsigned)
+!72 = !DILocation(line: 20, column: 18, scope: !67)
+!73 = !DILocalVariable(name: "us", scope: !67, file: !1, line: 21, type: !74)
+!74 = !DIBasicType(name: "unsigned short", size: 16, align: 16, encoding: DW_ATE_unsigned)
+!75 = !DILocation(line: 21, column: 18, scope: !67)
+!76 = !DILocalVariable(name: "c", scope: !67, file: !1, line: 22, type: !77)
+!77 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!78 = !DILocation(line: 22, column: 8, scope: !67)
+!79 = !DILocalVariable(name: "uc", scope: !67, file: !1, line: 23, type: !80)
+!80 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
+!81 = !DILocation(line: 23, column: 17, scope: !67)
+!82 = !DILocalVariable(name: "sc", scope: !67, file: !1, line: 24, type: !83)
+!83 = !DIBasicType(name: "signed char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!84 = !DILocation(line: 24, column: 15, scope: !67)
+!85 = !DILocalVariable(name: "c16", scope: !67, file: !1, line: 25, type: !86)
+!86 = !DIBasicType(name: "char16_t", size: 16, align: 16, encoding: DW_ATE_UTF)
+!87 = !DILocation(line: 25, column: 12, scope: !67)
+!88 = !DILocalVariable(name: "c32", scope: !67, file: !1, line: 26, type: !89)
+!89 = !DIBasicType(name: "char32_t", size: 32, align: 32, encoding: DW_ATE_UTF)
+!90 = !DILocation(line: 26, column: 12, scope: !67)
+!91 = !DILocation(line: 27, column: 1, scope: !67)
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