[llvm] r273453 - [codeview] Add IntroducingVirtual debug info flag
Reid Kleckner via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 22 11:31:14 PDT 2016
Author: rnk
Date: Wed Jun 22 13:31:14 2016
New Revision: 273453
URL: http://llvm.org/viewvc/llvm-project?rev=273453&view=rev
Log:
[codeview] Add IntroducingVirtual debug info flag
CodeView needs to know if a virtual method was introduced in the current
class, and base classes may not have complete type information, so we
need to thread this bit through from the frontend.
Added:
llvm/trunk/test/DebugInfo/COFF/virtual-method-kinds.ll
Modified:
llvm/trunk/include/llvm/IR/DebugInfoFlags.def
llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
Modified: llvm/trunk/include/llvm/IR/DebugInfoFlags.def
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/DebugInfoFlags.def?rev=273453&r1=273452&r2=273453&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/DebugInfoFlags.def (original)
+++ llvm/trunk/include/llvm/IR/DebugInfoFlags.def Wed Jun 22 13:31:14 2016
@@ -36,6 +36,6 @@ HANDLE_DI_FLAG((1 << 15), ExternalTypeRe
HANDLE_DI_FLAG((1 << 16), SingleInheritance)
HANDLE_DI_FLAG((2 << 16), MultipleInheritance)
HANDLE_DI_FLAG((3 << 16), VirtualInheritance)
-// Next flag is 1 << 18
+HANDLE_DI_FLAG((1 << 18), IntroducedVirtual)
#undef HANDLE_DI_FLAG
Modified: llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp?rev=273453&r1=273452&r2=273453&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp Wed Jun 22 13:31:14 2016
@@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "CodeViewDebug.h"
+#include "llvm/ADT/TinyPtrVector.h"
#include "llvm/DebugInfo/CodeView/CodeView.h"
#include "llvm/DebugInfo/CodeView/FieldListRecordBuilder.h"
#include "llvm/DebugInfo/CodeView/Line.h"
@@ -1174,12 +1175,6 @@ TypeIndex CodeViewDebug::lowerTypeMember
// Lower the containing class type.
TypeIndex ClassType = getTypeIndex(ClassTy);
- // While processing the class type it is possible we already created this
- // member function. If so, we check here and return the existing one.
- auto I = TypeIndices.find({Ty, ClassTy});
- if (I != TypeIndices.end())
- return I->second;
-
SmallVector<TypeIndex, 8> ReturnAndArgTypeIndices;
for (DITypeRef ArgTypeRef : Ty->getTypeArray())
ReturnAndArgTypeIndices.push_back(getTypeIndex(ArgTypeRef));
@@ -1313,12 +1308,7 @@ struct llvm::ClassInfo {
// [MemberInfo]
typedef std::vector<MemberInfo> MemberList;
- struct MethodInfo {
- const DISubprogram *Method;
- bool Introduced;
- };
- // [MethodInfo]
- typedef std::vector<MethodInfo> MethodsList;
+ typedef TinyPtrVector<const DISubprogram *> MethodsList;
// MethodName -> MethodsList
typedef MapVector<MDString *, MethodsList> MethodsMap;
@@ -1367,10 +1357,7 @@ ClassInfo CodeViewDebug::collectClassInf
if (!Element)
continue;
if (auto *SP = dyn_cast<DISubprogram>(Element)) {
- // Non-virtual methods does not need the introduced marker.
- // Set it to false.
- bool Introduced = false;
- Info.Methods[SP->getRawName()].push_back({SP, Introduced});
+ Info.Methods[SP->getRawName()].push_back(SP);
} else if (auto *DDTy = dyn_cast<DIDerivedType>(Element)) {
if (DDTy->getTag() == dwarf::DW_TAG_member)
collectMemberInfo(Info, DDTy);
@@ -1491,11 +1478,9 @@ CodeViewDebug::lowerRecordFieldList(cons
StringRef Name = MethodItr.first->getString();
std::vector<OneMethodRecord> Methods;
- for (ClassInfo::MethodInfo &MethodInfo : MethodItr.second) {
- const DISubprogram *SP = MethodInfo.Method;
- bool Introduced = MethodInfo.Introduced;
-
- TypeIndex MethodType = getTypeIndex(SP->getType(), Ty);
+ for (const DISubprogram *SP : MethodItr.second) {
+ TypeIndex MethodType = getMemberFunctionType(SP, Ty);
+ bool Introduced = SP->getFlags() & DINode::FlagIntroducedVirtual;
unsigned VFTableOffset = -1;
if (Introduced)
Added: llvm/trunk/test/DebugInfo/COFF/virtual-method-kinds.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/COFF/virtual-method-kinds.ll?rev=273453&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/COFF/virtual-method-kinds.ll (added)
+++ llvm/trunk/test/DebugInfo/COFF/virtual-method-kinds.ll Wed Jun 22 13:31:14 2016
@@ -0,0 +1,294 @@
+; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s
+
+; Check for the appropriate MethodKind below.
+
+; C++ source used to generate IR:
+; $ cat t.cpp
+; struct A {
+; virtual void f(); // IntroducingVirtual
+; virtual void g() = 0; // PureIntroducingVirtual
+; };
+; struct B : A {
+; void f() override = 0; // PureVirtual
+; void g() override; // Virtual
+; };
+; struct C : B {
+; void f() override; // Virtual
+; void g() override; // Virtual
+; };
+; C *p = new C;
+; $ clang t.cpp -S -emit-llvm -g -gcodeview -o t.ll
+
+; CHECK: OneMethod {
+; CHECK-NEXT: AccessSpecifier: Public (0x3)
+; CHECK-NEXT: MethodKind: Virtual (0x1)
+; CHECK-NEXT: Type: void C::() ({{.*}})
+; CHECK-NEXT: Name: f
+; CHECK-NEXT: }
+; CHECK-NEXT: OneMethod {
+; CHECK-NEXT: AccessSpecifier: Public (0x3)
+; CHECK-NEXT: MethodKind: Virtual (0x1)
+; CHECK-NEXT: Type: void C::() ({{.*}})
+; CHECK-NEXT: Name: g
+; CHECK-NEXT: }
+
+; CHECK: OneMethod {
+; CHECK-NEXT: AccessSpecifier: Public (0x3)
+; CHECK-NEXT: MethodKind: PureVirtual (0x5)
+; CHECK-NEXT: Type: void B::() ({{.*}})
+; CHECK-NEXT: Name: f
+; CHECK-NEXT: }
+; CHECK-NEXT: OneMethod {
+; CHECK-NEXT: AccessSpecifier: Public (0x3)
+; CHECK-NEXT: MethodKind: Virtual (0x1)
+; CHECK-NEXT: Type: void B::() ({{.*}})
+; CHECK-NEXT: Name: g
+; CHECK-NEXT: }
+
+; CHECK: OneMethod {
+; CHECK-NEXT: AccessSpecifier: Public (0x3)
+; CHECK-NEXT: MethodKind: IntroducingVirtual (0x4)
+; CHECK-NEXT: Type: void A::() ({{.*}})
+; CHECK-NEXT: VFTableOffset: 0x0
+; CHECK-NEXT: Name: f
+; CHECK-NEXT: }
+; CHECK-NEXT: OneMethod {
+; CHECK-NEXT: AccessSpecifier: Public (0x3)
+; CHECK-NEXT: MethodKind: PureIntroducingVirtual (0x6)
+; CHECK-NEXT: Type: void A::() ({{.*}})
+; CHECK-NEXT: VFTableOffset: 0x8
+; CHECK-NEXT: Name: g
+; CHECK-NEXT: }
+
+; 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.C = type { %struct.B }
+%struct.B = type { %struct.A }
+%struct.A = type { i32 (...)** }
+%rtti.CompleteObjectLocator = type { i32, i32, i32, i32, i32, i32 }
+%rtti.TypeDescriptor7 = type { i8**, i8*, [8 x i8] }
+%rtti.ClassHierarchyDescriptor = type { i32, i32, i32, i32 }
+%rtti.BaseClassDescriptor = type { i32, i32, i32, i32, i32, i32, i32 }
+
+$"\01??0C@@QEAA at XZ" = comdat any
+
+$"\01??0B@@QEAA at XZ" = comdat any
+
+$"\01??0A@@QEAA at XZ" = comdat any
+
+$"\01??_7C@@6B@" = comdat largest
+
+$"\01??_R4C@@6B@" = comdat any
+
+$"\01??_R0?AUC@@@8" = comdat any
+
+$"\01??_R3C@@8" = comdat any
+
+$"\01??_R2C@@8" = comdat any
+
+$"\01??_R1A@?0A at EA@C@@8" = comdat any
+
+$"\01??_R1A@?0A at EA@B@@8" = comdat any
+
+$"\01??_R0?AUB@@@8" = comdat any
+
+$"\01??_R3B@@8" = comdat any
+
+$"\01??_R2B@@8" = comdat any
+
+$"\01??_R1A@?0A at EA@A@@8" = comdat any
+
+$"\01??_R0?AUA@@@8" = comdat any
+
+$"\01??_R3A@@8" = comdat any
+
+$"\01??_R2A@@8" = comdat any
+
+$"\01??_7B@@6B@" = comdat largest
+
+$"\01??_R4B@@6B@" = comdat any
+
+$"\01??_7A@@6B@" = comdat largest
+
+$"\01??_R4A@@6B@" = comdat any
+
+@"\01?p@@3PEAUC@@EA" = global %struct.C* null, align 8
+ at 0 = private unnamed_addr constant [3 x i8*] [i8* bitcast (%rtti.CompleteObjectLocator* @"\01??_R4C@@6B@" to i8*), i8* bitcast (void (%struct.C*)* @"\01?f at C@@UEAAXXZ" to i8*), i8* bitcast (void (%struct.C*)* @"\01?g at C@@UEAAXXZ" to i8*)], comdat($"\01??_7C@@6B@")
+@"\01??_R4C@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor7* @"\01??_R0?AUC@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3C@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.CompleteObjectLocator* @"\01??_R4C@@6B@" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_7type_info@@6B@" = external constant i8*
+@"\01??_R0?AUC@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"\01??_7type_info@@6B@", i8* null, [8 x i8] c".?AUC@@\00" }, comdat
+ at __ImageBase = external constant i8
+@"\01??_R3C@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 3, i32 trunc (i64 sub nuw nsw (i64 ptrtoint ([4 x i32]* @"\01??_R2C@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_R2C@@8" = linkonce_odr constant [4 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A at EA@C@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A at EA@B@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A at EA@A@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0], comdat
+@"\01??_R1A@?0A at EA@C@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor7* @"\01??_R0?AUC@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 2, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3C@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_R1A@?0A at EA@B@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor7* @"\01??_R0?AUB@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 1, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3B@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_R0?AUB@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"\01??_7type_info@@6B@", i8* null, [8 x i8] c".?AUB@@\00" }, comdat
+@"\01??_R3B@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 2, i32 trunc (i64 sub nuw nsw (i64 ptrtoint ([3 x i32]* @"\01??_R2B@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_R2B@@8" = linkonce_odr constant [3 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A at EA@B@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A at EA@A@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0], comdat
+@"\01??_R1A@?0A at EA@A@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor7* @"\01??_R0?AUA@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3A@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_R0?AUA@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"\01??_7type_info@@6B@", i8* null, [8 x i8] c".?AUA@@\00" }, comdat
+@"\01??_R3A@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint ([2 x i32]* @"\01??_R2A@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+@"\01??_R2A@@8" = linkonce_odr constant [2 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A at EA@A@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0], comdat
+ at 1 = private unnamed_addr constant [3 x i8*] [i8* bitcast (%rtti.CompleteObjectLocator* @"\01??_R4B@@6B@" to i8*), i8* bitcast (void ()* @_purecall to i8*), i8* bitcast (void (%struct.B*)* @"\01?g at B@@UEAAXXZ" to i8*)], comdat($"\01??_7B@@6B@")
+@"\01??_R4B@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor7* @"\01??_R0?AUB@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3B@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.CompleteObjectLocator* @"\01??_R4B@@6B@" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+ at 2 = private unnamed_addr constant [3 x i8*] [i8* bitcast (%rtti.CompleteObjectLocator* @"\01??_R4A@@6B@" to i8*), i8* bitcast (void (%struct.A*)* @"\01?f at A@@UEAAXXZ" to i8*), i8* bitcast (void ()* @_purecall to i8*)], comdat($"\01??_7A@@6B@")
+@"\01??_R4A@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor7* @"\01??_R0?AUA@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3A@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.CompleteObjectLocator* @"\01??_R4A@@6B@" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
+ at llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_t.cpp, i8* null }]
+
+@"\01??_7C@@6B@" = unnamed_addr alias i8*, getelementptr inbounds ([3 x i8*], [3 x i8*]* @0, i32 0, i32 1)
+@"\01??_7B@@6B@" = unnamed_addr alias i8*, getelementptr inbounds ([3 x i8*], [3 x i8*]* @1, i32 0, i32 1)
+@"\01??_7A@@6B@" = unnamed_addr alias i8*, getelementptr inbounds ([3 x i8*], [3 x i8*]* @2, i32 0, i32 1)
+
+; Function Attrs: uwtable
+define internal void @"\01??__Ep@@YAXXZ"() #0 !dbg !39 {
+entry:
+ %call = call i8* @"\01??2 at YAPEAX_K@Z"(i64 8) #5, !dbg !42
+ %0 = bitcast i8* %call to %struct.C*, !dbg !42
+ %call1 = call %struct.C* @"\01??0C@@QEAA at XZ"(%struct.C* %0) #6, !dbg !43
+ store %struct.C* %0, %struct.C** @"\01?p@@3PEAUC@@EA", align 8, !dbg !42
+ ret void, !dbg !43
+}
+
+; Function Attrs: nobuiltin
+declare noalias i8* @"\01??2 at YAPEAX_K@Z"(i64) #1
+
+; Function Attrs: inlinehint nounwind uwtable
+define linkonce_odr %struct.C* @"\01??0C@@QEAA at XZ"(%struct.C* returned %this) unnamed_addr #2 comdat align 2 !dbg !44 {
+entry:
+ %this.addr = alloca %struct.C*, align 8
+ store %struct.C* %this, %struct.C** %this.addr, align 8
+ call void @llvm.dbg.declare(metadata %struct.C** %this.addr, metadata !46, metadata !47), !dbg !48
+ %this1 = load %struct.C*, %struct.C** %this.addr, align 8
+ %0 = bitcast %struct.C* %this1 to %struct.B*, !dbg !49
+ %call = call %struct.B* @"\01??0B@@QEAA at XZ"(%struct.B* %0) #6, !dbg !49
+ %1 = bitcast %struct.C* %this1 to i32 (...)***, !dbg !49
+ store i32 (...)** bitcast (i8** @"\01??_7C@@6B@" to i32 (...)**), i32 (...)*** %1, align 8, !dbg !49
+ ret %struct.C* %this1, !dbg !49
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #3
+
+; Function Attrs: inlinehint nounwind uwtable
+define linkonce_odr %struct.B* @"\01??0B@@QEAA at XZ"(%struct.B* returned %this) unnamed_addr #2 comdat align 2 !dbg !50 {
+entry:
+ %this.addr = alloca %struct.B*, align 8
+ store %struct.B* %this, %struct.B** %this.addr, align 8
+ call void @llvm.dbg.declare(metadata %struct.B** %this.addr, metadata !52, metadata !47), !dbg !54
+ %this1 = load %struct.B*, %struct.B** %this.addr, align 8
+ %0 = bitcast %struct.B* %this1 to %struct.A*, !dbg !55
+ %call = call %struct.A* @"\01??0A@@QEAA at XZ"(%struct.A* %0) #6, !dbg !55
+ %1 = bitcast %struct.B* %this1 to i32 (...)***, !dbg !55
+ store i32 (...)** bitcast (i8** @"\01??_7B@@6B@" to i32 (...)**), i32 (...)*** %1, align 8, !dbg !55
+ ret %struct.B* %this1, !dbg !55
+}
+
+declare void @"\01?f at C@@UEAAXXZ"(%struct.C*) unnamed_addr #4
+
+declare void @"\01?g at C@@UEAAXXZ"(%struct.C*) unnamed_addr #4
+
+; Function Attrs: inlinehint nounwind uwtable
+define linkonce_odr %struct.A* @"\01??0A@@QEAA at XZ"(%struct.A* returned %this) unnamed_addr #2 comdat align 2 !dbg !56 {
+entry:
+ %this.addr = alloca %struct.A*, align 8
+ store %struct.A* %this, %struct.A** %this.addr, align 8
+ call void @llvm.dbg.declare(metadata %struct.A** %this.addr, metadata !58, metadata !47), !dbg !60
+ %this1 = load %struct.A*, %struct.A** %this.addr, align 8
+ %0 = bitcast %struct.A* %this1 to i32 (...)***, !dbg !61
+ store i32 (...)** bitcast (i8** @"\01??_7A@@6B@" to i32 (...)**), i32 (...)*** %0, align 8, !dbg !61
+ ret %struct.A* %this1, !dbg !61
+}
+
+declare void @_purecall() unnamed_addr
+
+declare void @"\01?g at B@@UEAAXXZ"(%struct.B*) unnamed_addr #4
+
+declare void @"\01?f at A@@UEAAXXZ"(%struct.A*) unnamed_addr #4
+
+; Function Attrs: uwtable
+define internal void @_GLOBAL__sub_I_t.cpp() #0 !dbg !62 {
+entry:
+ call void @"\01??__Ep@@YAXXZ"(), !dbg !64
+ ret void
+}
+
+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 = { nobuiltin "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 #2 = { inlinehint 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" }
+attributes #3 = { nounwind readnone }
+attributes #4 = { "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 #5 = { builtin }
+attributes #6 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!35, !36, !37}
+!llvm.ident = !{!38}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
+!1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
+!2 = !{}
+!3 = !{!4}
+!4 = distinct !DIGlobalVariable(name: "p", linkageName: "\01?p@@3PEAUC@@EA", scope: !0, file: !1, line: 13, type: !5, isLocal: false, isDefinition: true, variable: %struct.C** @"\01?p@@3PEAUC@@EA")
+!5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64)
+!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C", file: !1, line: 9, size: 64, align: 64, elements: !7, vtableHolder: !12, identifier: ".?AUC@@")
+!7 = !{!8, !30, !34}
+!8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9)
+!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !1, line: 5, size: 64, align: 64, elements: !10, vtableHolder: !12, identifier: ".?AUB@@")
+!10 = !{!11, !25, !29}
+!11 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !9, baseType: !12)
+!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 64, align: 64, elements: !13, vtableHolder: !12, identifier: ".?AUA@@")
+!13 = !{!14, !20, !24}
+!14 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", scope: !1, file: !1, baseType: !15, size: 64, flags: DIFlagArtificial)
+!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
+!16 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: !17, size: 64)
+!17 = !DISubroutineType(types: !18)
+!18 = !{!19}
+!19 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!20 = !DISubprogram(name: "f", linkageName: "\01?f at A@@UEAAXXZ", scope: !12, file: !1, line: 2, type: !21, isLocal: false, isDefinition: false, scopeLine: 2, containingType: !12, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped | DIFlagIntroducedVirtual, isOptimized: false)
+!21 = !DISubroutineType(types: !22)
+!22 = !{null, !23}
+!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!24 = !DISubprogram(name: "g", linkageName: "\01?g at A@@UEAAXXZ", scope: !12, file: !1, line: 3, type: !21, isLocal: false, isDefinition: false, scopeLine: 3, containingType: !12, virtuality: DW_VIRTUALITY_pure_virtual, virtualIndex: 1, flags: DIFlagPrototyped | DIFlagIntroducedVirtual, isOptimized: false)
+!25 = !DISubprogram(name: "f", linkageName: "\01?f at B@@UEAAXXZ", scope: !9, file: !1, line: 6, type: !26, isLocal: false, isDefinition: false, scopeLine: 6, containingType: !9, virtuality: DW_VIRTUALITY_pure_virtual, virtualIndex: 0, flags: DIFlagPrototyped, isOptimized: false)
+!26 = !DISubroutineType(types: !27)
+!27 = !{null, !28}
+!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!29 = !DISubprogram(name: "g", linkageName: "\01?g at B@@UEAAXXZ", scope: !9, file: !1, line: 7, type: !26, isLocal: false, isDefinition: false, scopeLine: 7, containingType: !9, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 1, flags: DIFlagPrototyped, isOptimized: false)
+!30 = !DISubprogram(name: "f", linkageName: "\01?f at C@@UEAAXXZ", scope: !6, file: !1, line: 10, type: !31, isLocal: false, isDefinition: false, scopeLine: 10, containingType: !6, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped, isOptimized: false)
+!31 = !DISubroutineType(types: !32)
+!32 = !{null, !33}
+!33 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
+!34 = !DISubprogram(name: "g", linkageName: "\01?g at C@@UEAAXXZ", scope: !6, file: !1, line: 11, type: !31, isLocal: false, isDefinition: false, scopeLine: 11, containingType: !6, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 1, flags: DIFlagPrototyped, isOptimized: false)
+!35 = !{i32 2, !"CodeView", i32 1}
+!36 = !{i32 2, !"Debug Info Version", i32 3}
+!37 = !{i32 1, !"PIC Level", i32 2}
+!38 = !{!"clang version 3.9.0 "}
+!39 = distinct !DISubprogram(name: "??__Ep@@YAXXZ", scope: !1, file: !1, line: 13, type: !40, isLocal: true, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!40 = !DISubroutineType(types: !41)
+!41 = !{null}
+!42 = !DILocation(line: 13, column: 8, scope: !39)
+!43 = !DILocation(line: 13, column: 12, scope: !39)
+!44 = distinct !DISubprogram(name: "C", linkageName: "\01??0C@@QEAA at XZ", scope: !6, file: !1, line: 9, type: !31, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !45, variables: !2)
+!45 = !DISubprogram(name: "C", scope: !6, type: !31, isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false)
+!46 = !DILocalVariable(name: "this", arg: 1, scope: !44, type: !5, flags: DIFlagArtificial | DIFlagObjectPointer)
+!47 = !DIExpression()
+!48 = !DILocation(line: 0, scope: !44)
+!49 = !DILocation(line: 9, column: 8, scope: !44)
+!50 = distinct !DISubprogram(name: "B", linkageName: "\01??0B@@QEAA at XZ", scope: !9, file: !1, line: 5, type: !26, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !51, variables: !2)
+!51 = !DISubprogram(name: "B", scope: !9, type: !26, isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false)
+!52 = !DILocalVariable(name: "this", arg: 1, scope: !50, type: !53, flags: DIFlagArtificial | DIFlagObjectPointer)
+!53 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
+!54 = !DILocation(line: 0, scope: !50)
+!55 = !DILocation(line: 5, column: 8, scope: !50)
+!56 = distinct !DISubprogram(name: "A", linkageName: "\01??0A@@QEAA at XZ", scope: !12, file: !1, line: 1, type: !21, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !57, variables: !2)
+!57 = !DISubprogram(name: "A", scope: !12, type: !21, isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false)
+!58 = !DILocalVariable(name: "this", arg: 1, scope: !56, type: !59, flags: DIFlagArtificial | DIFlagObjectPointer)
+!59 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, align: 64)
+!60 = !DILocation(line: 0, scope: !56)
+!61 = !DILocation(line: 1, column: 8, scope: !56)
+!62 = distinct !DISubprogram(linkageName: "_GLOBAL__sub_I_t.cpp", scope: !1, file: !1, type: !63, isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, variables: !2)
+!63 = !DISubroutineType(types: !2)
+!64 = !DILocation(line: 0, scope: !62)
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