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Cast vtable address points to i32 (...)** to enable more globalopt 

We currently use i32 (...)** as the type of the vptr field in the LLVM
struct type. LLVM's GlobalOpt prefers any bitcasts to be on the side of
the data being stored rather than on the pointer being stored to.

Reviewers: majnemer

Differential Revision: http://reviews.llvm.org/D5916

llvm-svn: 223267
This commit is contained in:
Reid Kleckner 2014-12-03 21:00:21 +00:00
parent 1780d82f35
commit 8d58513da4
11 changed files with 82 additions and 50 deletions
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12
clang/lib/CodeGen/CGClass.cpp
View File

@ -1982,10 +1982,14 @@ CodeGenFunction::InitializeVTablePointer(BaseSubobject Base,
NonVirtualOffset,
VirtualOffset);
// Finally, store the address point.
llvm::Type *AddressPointPtrTy =
VTableAddressPoint->getType()->getPointerTo();
VTableField = Builder.CreateBitCast(VTableField, AddressPointPtrTy);
// Finally, store the address point. Use the same LLVM types as the field to
// support optimization.
llvm::Type *VTablePtrTy =
llvm::FunctionType::get(CGM.Int32Ty, /*isVarArg=*/true)
->getPointerTo()
->getPointerTo();
VTableField = Builder.CreateBitCast(VTableField, VTablePtrTy->getPointerTo());
VTableAddressPoint = Builder.CreateBitCast(VTableAddressPoint, VTablePtrTy);
llvm::StoreInst *Store = Builder.CreateStore(VTableAddressPoint, VTableField);
CGM.DecorateInstruction(Store, CGM.getTBAAInfoForVTablePtr());
}

12
clang/test/CodeGenCXX/constructor-init.cpp
View File

@ -94,23 +94,23 @@ namespace InitVTable {
};
// CHECK-LABEL: define void @_ZN10InitVTable1BC2Ev(%"struct.InitVTable::B"* %this) unnamed_addr
// CHECK: [[T0:%.*]] = bitcast [[B:%.*]]* [[THIS:%.*]] to i8***
// CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]]
// CHECK: [[T0:%.*]] = bitcast [[B:%.*]]* [[THIS:%.*]] to i32 (...)***
// CHECK-NEXT: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2) to i32 (...)**), i32 (...)*** [[T0]]
// CHECK: [[VTBL:%.*]] = load i32 ([[B]]*)*** {{%.*}}
// CHECK-NEXT: [[FNP:%.*]] = getelementptr inbounds i32 ([[B]]*)** [[VTBL]], i64 0
// CHECK-NEXT: [[FN:%.*]] = load i32 ([[B]]*)** [[FNP]]
// CHECK-NEXT: [[ARG:%.*]] = call i32 [[FN]]([[B]]* [[THIS]])
// CHECK-NEXT: call void @_ZN10InitVTable1AC2Ei({{.*}}* {{%.*}}, i32 [[ARG]])
// CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* [[THIS]] to i8***
// CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]]
// CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* [[THIS]] to i32 (...)***
// CHECK-NEXT: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2) to i32 (...)**), i32 (...)*** [[T0]]
// CHECK-NEXT: ret void
B::B() : A(foo()) {}
// CHECK-LABEL: define void @_ZN10InitVTable1BC2Ei(%"struct.InitVTable::B"* %this, i32 %x) unnamed_addr
// CHECK: [[ARG:%.*]] = add nsw i32 {{%.*}}, 5
// CHECK-NEXT: call void @_ZN10InitVTable1AC2Ei({{.*}}* {{%.*}}, i32 [[ARG]])
// CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* {{%.*}} to i8***
// CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]]
// CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* {{%.*}} to i32 (...)***
// CHECK-NEXT: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2) to i32 (...)**), i32 (...)*** [[T0]]
// CHECK-NEXT: ret void
B::B(int x) : A(x + 5) {}
}

2
clang/test/CodeGenCXX/copy-constructor-synthesis-2.cpp
View File

@ -4,4 +4,4 @@ struct A { virtual void a(); };
A x(A& y) { return y; }
// CHECK: define linkonce_odr {{.*}} @_ZN1AC1ERKS_(%struct.A* {{.*}}%this, %struct.A* dereferenceable({{[0-9]+}})) unnamed_addr
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1A, i64 0, i64 2)
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1A, i64 0, i64 2) to i32 (...)**)

4
clang/test/CodeGenCXX/copy-constructor-synthesis.cpp
View File

@ -148,8 +148,8 @@ void f(B b1) {
// CHECK-LABEL: define linkonce_odr void @_ZN12rdar138169401AC2ERKS0_(
// CHECK: [[THIS:%.*]] = load [[A]]**
// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[THIS]] to i8***
// CHECK-NEXT: store i8** getelementptr inbounds ([4 x i8*]* @_ZTVN12rdar138169401AE, i64 0, i64 2), i8*** [[T0]]
// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[THIS]] to i32 (...)***
// CHECK-NEXT: store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*]* @_ZTVN12rdar138169401AE, i64 0, i64 2) to i32 (...)**), i32 (...)*** [[T0]]
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[A]]* [[THIS]], i32 0, i32 1
// CHECK-NEXT: [[OTHER:%.*]] = load [[A]]**
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds [[A]]* [[OTHER]], i32 0, i32 1

28
clang/test/CodeGenCXX/ctor-globalopt.cpp Normal file
View File

@ -0,0 +1,28 @@
// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm -o - %s -O1 | FileCheck %s --check-prefix=O1
// RUN: %clang_cc1 -triple %ms_abi_triple -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple %ms_abi_triple -emit-llvm -o - %s -O1 | FileCheck %s --check-prefix=O1
// Check that GlobalOpt can eliminate static constructors for simple implicit
// constructors. This is a targetted integration test to make sure that LLVM's
// optimizers are able to process Clang's IR. GlobalOpt in particular is
// sensitive to the casts we emit.
// CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }]
// CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_ctor_globalopt.cpp, i8* null }]
// CHECK-LABEL: define internal void @_GLOBAL__sub_I_ctor_globalopt.cpp()
// CHECK: call void @
// CHECK-NOT: call
// O1: @llvm.global_ctors = appending global [0 x { i32, void ()*, i8* }] zeroinitializer
struct A {
virtual void f();
int a;
};
struct B : virtual A {
virtual void g();
int b;
};
B b;

20
clang/test/CodeGenCXX/microsoft-abi-multiple-nonvirtual-inheritance.cpp
View File

@ -150,35 +150,35 @@ void emit_ctors() {
Left l;
// CHECK: define {{.*}} @"\01??0Left@@QAE@XZ"
// CHECK-NOT: getelementptr
// CHECK: store [1 x i8*]* @"\01??_7Left@@6B@"
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7Left@@6B@" to i32 (...)**)
// CHECK: ret
Right r;
// CHECK: define {{.*}} @"\01??0Right@@QAE@XZ"
// CHECK-NOT: getelementptr
// CHECK: store [1 x i8*]* @"\01??_7Right@@6B@"
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7Right@@6B@" to i32 (...)**)
// CHECK: ret
ChildOverride co;
// CHECK: define {{.*}} @"\01??0ChildOverride@@QAE@XZ"
// CHECK: %[[THIS:.*]] = load %struct.ChildOverride**
// CHECK: %[[VFPTR:.*]] = bitcast %struct.ChildOverride* %[[THIS]] to [1 x i8*]**
// CHECK: store [1 x i8*]* @"\01??_7ChildOverride@@6BLeft@@@", [1 x i8*]** %[[VFPTR]]
// CHECK: %[[VFPTR:.*]] = bitcast %struct.ChildOverride* %[[THIS]] to i32 (...)***
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7ChildOverride@@6BLeft@@@" to i32 (...)**), i32 (...)*** %[[VFPTR]]
// CHECK: %[[THIS_i8:.*]] = bitcast %struct.ChildOverride* %[[THIS]] to i8*
// CHECK: %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 4
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [1 x i8*]**
// CHECK: store [1 x i8*]* @"\01??_7ChildOverride@@6BRight@@@", [1 x i8*]** %[[VFPTR]]
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to i32 (...)***
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7ChildOverride@@6BRight@@@" to i32 (...)**), i32 (...)*** %[[VFPTR]]
// CHECK: ret
GrandchildOverride gc;
// CHECK: define {{.*}} @"\01??0GrandchildOverride@@QAE@XZ"
// CHECK: %[[THIS:.*]] = load %struct.GrandchildOverride**
// CHECK: %[[VFPTR:.*]] = bitcast %struct.GrandchildOverride* %[[THIS]] to [1 x i8*]**
// CHECK: store [1 x i8*]* @"\01??_7GrandchildOverride@@6BLeft@@@", [1 x i8*]** %[[VFPTR]]
// CHECK: %[[VFPTR:.*]] = bitcast %struct.GrandchildOverride* %[[THIS]] to i32 (...)***
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7GrandchildOverride@@6BLeft@@@" to i32 (...)**), i32 (...)*** %[[VFPTR]]
// CHECK: %[[THIS_i8:.*]] = bitcast %struct.GrandchildOverride* %[[THIS]] to i8*
// CHECK: %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 4
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [1 x i8*]**
// CHECK: store [1 x i8*]* @"\01??_7GrandchildOverride@@6BRight@@@", [1 x i8*]** %[[VFPTR]]
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to i32 (...)***
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7GrandchildOverride@@6BRight@@@" to i32 (...)**), i32 (...)*** %[[VFPTR]]
// CHECK: ret
}

4
clang/test/CodeGenCXX/microsoft-abi-structors.cpp
View File

@ -75,8 +75,8 @@ void C::foo() {}
void check_vftable_offset() {
C c;
// The vftable pointer should point at the beginning of the vftable.
// CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to [2 x i8*]**
// CHECK: store [2 x i8*]* @"\01??_7C@basic@@6B@", [2 x i8*]** [[THIS_PTR]]
// CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to i32 (...)***
// CHECK: store i32 (...)** bitcast ([2 x i8*]* @"\01??_7C@basic@@6B@" to i32 (...)**), i32 (...)*** [[THIS_PTR]]
}
void call_complete_dtor(C *obj_ptr) {

22
clang/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
View File

@ -32,8 +32,8 @@ B::B() {
// ...
// CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8*
// CHECK: %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 %{{.*}}
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [3 x i8*]**
// CHECK: store [3 x i8*]* @"\01??_7B@@6B@", [3 x i8*]** %[[VFPTR]]
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to i32 (...)***
// CHECK: store i32 (...)** bitcast ([3 x i8*]* @"\01??_7B@@6B@" to i32 (...)**), i32 (...)*** %[[VFPTR]]
// Initialize vtorDisp:
// CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8*
@ -65,8 +65,8 @@ B::~B() {
// ...
// CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8*
// CHECK: %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32 %{{.*}}
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [3 x i8*]**
// CHECK: store [3 x i8*]* @"\01??_7B@@6B@", [3 x i8*]** %[[VFPTR]]
// CHECK: %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to i32 (...)***
// CHECK: store i32 (...)** bitcast ([3 x i8*]* @"\01??_7B@@6B@" to i32 (...)**), i32 (...)*** %[[VFPTR]]
// Initialize vtorDisp:
// CHECK: %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8*
@ -245,9 +245,9 @@ struct D : virtual A, virtual B, virtual C {
D::D() {
// CHECK-LABEL: define x86_thiscallcc %"struct.multiple_vbases::D"* @"\01??0D@multiple_vbases@@QAE@XZ"
// Just make sure we emit 3 vtordisps after initializing vfptrs.
// CHECK: store [1 x i8*]* @"\01??_7D@multiple_vbases@@6BA@1@@", [1 x i8*]** %{{.*}}
// CHECK: store [1 x i8*]* @"\01??_7D@multiple_vbases@@6BB@1@@", [1 x i8*]** %{{.*}}
// CHECK: store [1 x i8*]* @"\01??_7D@multiple_vbases@@6BC@1@@", [1 x i8*]** %{{.*}}
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7D@multiple_vbases@@6BA@1@@" to i32 (...)**), i32 (...)*** %{{.*}}
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7D@multiple_vbases@@6BB@1@@" to i32 (...)**), i32 (...)*** %{{.*}}
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7D@multiple_vbases@@6BC@1@@" to i32 (...)**), i32 (...)*** %{{.*}}
// ...
// CHECK: store i32 %{{.*}}, i32* %{{.*}}
// CHECK: store i32 %{{.*}}, i32* %{{.*}}
@ -396,8 +396,8 @@ C::~C() {
// In this case "this" points to the most derived class, so no GEPs needed.
// CHECK-NOT: getelementptr
// CHECK-NOT: bitcast
// CHECK: %[[VFPTR_i8:.*]] = bitcast %"struct.test4::C"* %{{.*}} to [1 x i8*]**
// CHECK: store [1 x i8*]* @"\01??_7C@test4@@6BB@1@@", [1 x i8*]** %[[VFPTR_i8]]
// CHECK: %[[VFPTR_i8:.*]] = bitcast %"struct.test4::C"* %{{.*}} to i32 (...)***
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7C@test4@@6BB@1@@" to i32 (...)**), i32 (...)*** %[[VFPTR_i8]]
foo(this);
// CHECK: ret
@ -431,8 +431,8 @@ E::~E() {
// In this case "this" points to the most derived class, so no GEPs needed.
// CHECK-NOT: getelementptr
// CHECK-NOT: bitcast
// CHECK: %[[VFPTR_i8:.*]] = bitcast %"struct.test4::E"* %{{.*}} to [1 x i8*]**
// CHECK: store [1 x i8*]* @"\01??_7E@test4@@6BD@1@@", [1 x i8*]** %[[VFPTR_i8]]
// CHECK: %[[VFPTR_i8:.*]] = bitcast %"struct.test4::E"* %{{.*}} to i32 (...)***
// CHECK: store i32 (...)** bitcast ([1 x i8*]* @"\01??_7E@test4@@6BD@1@@" to i32 (...)**), i32 (...)*** %[[VFPTR_i8]]
foo(this);
}

4
clang/test/CodeGenCXX/microsoft-interface.cpp
View File

@ -34,7 +34,7 @@ int fn() {
// CHECK-LABEL: define linkonce_odr x86_thiscallcc void @_ZN1SC2Ev(%struct.S* %this)
// CHECK: call x86_thiscallcc void @_ZN1IC2Ev(%__interface.I* %{{[.0-9A-Z_a-z]+}})
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1S, i64 0, i64 2), i8*** %{{[.0-9A-Z_a-z]+}}
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1S, i64 0, i64 2) to i32 (...)**), i32 (...)*** %{{[.0-9A-Z_a-z]+}}
// CHECK-LABEL: define linkonce_odr x86_thiscallcc void @_ZN1IC2Ev(%__interface.I* %this)
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1I, i64 0, i64 2), i8*** %{{[.0-9A-Z_a-z]+}}
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1I, i64 0, i64 2) to i32 (...)**), i32 (...)*** %{{[.0-9A-Z_a-z]+}}

16
clang/test/CodeGenCXX/skip-vtable-pointer-initialization.cpp
View File

@ -11,7 +11,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test11AD2Ev
// CHECK-NOT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test11AE, i64 0, i64 2), i8***
// CHECK-NOT: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test11AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
@ -27,7 +27,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test21AD2Ev
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test21AE, i64 0, i64 2), i8***
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test21AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A() {
f();
}
@ -50,7 +50,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test31AD2Ev
// CHECK-NOT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test31AE, i64 0, i64 2), i8***
// CHECK-NOT: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test31AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A() {
}
@ -76,7 +76,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test41AD2Ev
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test41AE, i64 0, i64 2), i8***
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test41AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
@ -100,7 +100,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test51AD2Ev
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test51AE, i64 0, i64 2), i8***
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test51AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
@ -128,7 +128,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test61AD2Ev
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test61AE, i64 0, i64 2), i8***
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test61AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
@ -154,7 +154,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test71AD2Ev
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test71AE, i64 0, i64 2), i8***
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test71AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}
@ -180,7 +180,7 @@ struct A {
};
// CHECK-LABEL: define void @_ZN5Test81AD2Ev
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test81AE, i64 0, i64 2), i8***
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTVN5Test81AE, i64 0, i64 2) to i32 (...)**), i32 (...)***
A::~A()
{
}

8
clang/test/CodeGenCXX/vtable-pointer-initialization.cpp
View File

@ -21,13 +21,13 @@ struct A : Base {
// CHECK-LABEL: define void @_ZN1AC2Ev(%struct.A* %this) unnamed_addr
// CHECK: call void @_ZN4BaseC2Ev(
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1A, i64 0, i64 2)
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1A, i64 0, i64 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldC1Ev(
// CHECK: ret void
A::A() { }
// CHECK-LABEL: define void @_ZN1AD2Ev(%struct.A* %this) unnamed_addr
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1A, i64 0, i64 2)
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1A, i64 0, i64 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldD1Ev(
// CHECK: call void @_ZN4BaseD2Ev(
// CHECK: ret void
@ -45,13 +45,13 @@ void f() { B b; }
// CHECK: call void @_ZN1BC2Ev(
// CHECK-LABEL: define linkonce_odr void @_ZN1BD1Ev(%struct.B* %this) unnamed_addr
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1B, i64 0, i64 2)
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1B, i64 0, i64 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldD1Ev(
// CHECK: call void @_ZN4BaseD2Ev(
// CHECK: ret void
// CHECK-LABEL: define linkonce_odr void @_ZN1BC2Ev(%struct.B* %this) unnamed_addr
// CHECK: call void @_ZN4BaseC2Ev(
// CHECK: store i8** getelementptr inbounds ([3 x i8*]* @_ZTV1B, i64 0, i64 2)
// CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*]* @_ZTV1B, i64 0, i64 2) to i32 (...)**)
// CHECK: call void @_ZN5FieldC1Ev
// CHECK: ret void