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Add unnamed_addr to vtables. 

llvm-svn: 123272
This commit is contained in:
Rafael Espindola 2011-01-11 21:10:26 +00:00
parent 50c59e9e9a
commit 5674c644cf
8 changed files with 40 additions and 37 deletions
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7
clang/lib/CodeGen/CGVTables.cpp
View File

@ -2979,8 +2979,11 @@ llvm::GlobalVariable *CodeGenVTables::GetAddrOfVTable(const CXXRecordDecl *RD) {
llvm::ArrayType *ArrayType =
llvm::ArrayType::get(Int8PtrTy, getNumVTableComponents(RD));
return GetGlobalVariable(CGM.getModule(), Name, ArrayType,
llvm::GlobalValue::ExternalLinkage);
llvm::GlobalVariable *GV =
GetGlobalVariable(CGM.getModule(), Name, ArrayType,
llvm::GlobalValue::ExternalLinkage);
GV->setUnnamedAddr(true);
return GV;
}
void

12
clang/test/CodeGenCXX/key-function-vtable.cpp
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@ -43,9 +43,9 @@ void use_X1(X1 *x1) { x1->f(); }
// FIXME: The checks are extremely difficult to get right when the globals
// aren't alphabetized
// CHECK: @_ZTV2X1 = weak_odr constant
// CHECK: @_ZTV5testa = constant [3 x i8*] [i8* null
// CHECK: @_ZTV5testc = weak_odr constant [3 x i8*] [i8* null
// CHECK: @_ZTVN12_GLOBAL__N_15testgE = internal constant [3 x i8*] [i8* null
// CHECK: @_ZTV5teste = weak_odr constant [3 x i8*] [i8* null
// CHECK: @_ZTV5testb = weak_odr constant [3 x i8*] [i8* null
// CHECK: @_ZTV2X1 = weak_odr unnamed_addr constant
// CHECK: @_ZTV5testa = unnamed_addr constant [3 x i8*] [i8* null
// CHECK: @_ZTV5testc = weak_odr unnamed_addr constant [3 x i8*] [i8* null
// CHECK: @_ZTVN12_GLOBAL__N_15testgE = internal unnamed_addr constant [3 x i8*] [i8* null
// CHECK: @_ZTV5teste = weak_odr unnamed_addr constant [3 x i8*] [i8* null
// CHECK: @_ZTV5testb = weak_odr unnamed_addr constant [3 x i8*] [i8* null

6
clang/test/CodeGenCXX/mangle-subst-std.cpp
View File

@ -3,13 +3,13 @@
// Check mangling of Vtables, VTTs, and construction vtables that
// involve standard substitutions.
// CHECK: @_ZTVSd = weak_odr constant
// CHECK: @_ZTVSd = weak_odr unnamed_addr constant
// CHECK: @_ZTCSd0_Si = internal constant
// CHECK: @_ZTCSd16_So = internal constant
// CHECK: @_ZTTSd = weak_odr constant
// CHECK: @_ZTVSo = weak_odr constant
// CHECK: @_ZTVSo = weak_odr unnamed_addr constant
// CHECK: @_ZTTSo = weak_odr constant
// CHECK: @_ZTVSi = weak_odr constant
// CHECK: @_ZTVSi = weak_odr unnamed_addr constant
// CHECK: @_ZTTSi = weak_odr constant
namespace std {
struct A { A(); };

2
clang/test/CodeGenCXX/template-instantiation.cpp
View File

@ -2,7 +2,7 @@
// CHECK-NOT: @_ZTVN5test118stdio_sync_filebufIwEE = constant
// CHECK-NOT: _ZTVN5test315basic_fstreamXXIcEE
// CHECK: @_ZTVN5test018stdio_sync_filebufIwEE = constant
// CHECK: @_ZTVN5test018stdio_sync_filebufIwEE = unnamed_addr constant
// CHECK-NOT: _ZTVN5test31SIiEE
// CHECK-NOT: _ZTSN5test31SIiEE

8
clang/test/CodeGenCXX/virt-template-vtable.cpp
View File

@ -16,7 +16,7 @@ extern template class A<short>;
template class A<short>;
// CHECK: @_ZTV1B = weak_odr constant
// CHECK: @_ZTV1AIlE = weak_odr constant
// CHECK: @_ZTV1AIsE = weak_odr constant
// CHECK: @_ZTV1AIiE = weak_odr constant
// CHECK: @_ZTV1B = weak_odr unnamed_addr constant
// CHECK: @_ZTV1AIlE = weak_odr unnamed_addr constant
// CHECK: @_ZTV1AIsE = weak_odr unnamed_addr constant
// CHECK: @_ZTV1AIiE = weak_odr unnamed_addr constant

4
clang/test/CodeGenCXX/visibility.cpp
View File

@ -27,8 +27,8 @@
// CHECK-HIDDEN: @_ZZN6Test193fooIiEEvvE1a = linkonce_odr hidden global
// CHECK-HIDDEN: @_ZGVZN6Test193fooIiEEvvE1a = linkonce_odr hidden global i64
// CHECK-HIDDEN: @_ZTTN6Test161AIcEE = external constant
// CHECK-HIDDEN: @_ZTVN6Test161AIcEE = external constant
// CHECK: @_ZTVN5Test63fooE = weak_odr hidden constant
// CHECK-HIDDEN: @_ZTVN6Test161AIcEE = external unnamed_addr constant
// CHECK: @_ZTVN5Test63fooE = weak_odr hidden unnamed_addr constant
namespace Test1 {
// CHECK: define hidden void @_ZN5Test11fEv

2
clang/test/CodeGenCXX/vtable-key-function.cpp
View File

@ -9,7 +9,7 @@ struct A {
// A does not have a key function, so the first constructor we emit should
// cause the vtable to be defined (without assertions.)
// CHECK: @_ZTVN6PR56971AE = weak_odr constant
// CHECK: @_ZTVN6PR56971AE = weak_odr unnamed_addr constant
A::A() { }
A::A(int) { }
}

36
clang/test/CodeGenCXX/vtable-linkage.cpp
View File

@ -99,92 +99,92 @@ void use_F() {
// B has a key function that is not defined in this translation unit so its vtable
// has external linkage.
// CHECK-1: @_ZTV1B = external constant
// CHECK-1: @_ZTV1B = external unnamed_addr constant
// C has no key function, so its vtable should have weak_odr linkage
// and hidden visibility (rdar://problem/7523229).
// CHECK-2: @_ZTV1C = weak_odr constant
// CHECK-2: @_ZTV1C = weak_odr unnamed_addr constant
// CHECK-2: @_ZTS1C = weak_odr constant
// CHECK-2: @_ZTI1C = weak_odr constant
// CHECK-2-HIDDEN: @_ZTV1C = weak_odr hidden constant
// CHECK-2-HIDDEN: @_ZTV1C = weak_odr hidden unnamed_addr constant
// CHECK-2-HIDDEN: @_ZTS1C = weak_odr constant
// CHECK-2-HIDDEN: @_ZTI1C = weak_odr hidden constant
// D has a key function that is defined in this translation unit so its vtable is
// defined in the translation unit.
// CHECK-3: @_ZTV1D = constant
// CHECK-3: @_ZTV1D = unnamed_addr constant
// CHECK-3: @_ZTS1D = constant
// CHECK-3: @_ZTI1D = constant
// E<char> is an explicit specialization with a key function defined
// in this translation unit, so its vtable should have external
// linkage.
// CHECK-4: @_ZTV1EIcE = constant
// CHECK-4: @_ZTV1EIcE = unnamed_addr constant
// CHECK-4: @_ZTS1EIcE = constant
// CHECK-4: @_ZTI1EIcE = constant
// E<short> is an explicit template instantiation with a key function
// defined in this translation unit, so its vtable should have
// weak_odr linkage.
// CHECK-5: @_ZTV1EIsE = weak_odr constant
// CHECK-5: @_ZTV1EIsE = weak_odr unnamed_addr constant
// CHECK-5: @_ZTS1EIsE = weak_odr constant
// CHECK-5: @_ZTI1EIsE = weak_odr constant
// CHECK-5-HIDDEN: @_ZTV1EIsE = weak_odr constant
// CHECK-5-HIDDEN: @_ZTV1EIsE = weak_odr unnamed_addr constant
// CHECK-5-HIDDEN: @_ZTS1EIsE = weak_odr constant
// CHECK-5-HIDDEN: @_ZTI1EIsE = weak_odr constant
// F<short> is an explicit template instantiation without a key
// function, so its vtable should have weak_odr linkage
// CHECK-6: @_ZTV1FIsE = weak_odr constant
// CHECK-6: @_ZTV1FIsE = weak_odr unnamed_addr constant
// CHECK-6: @_ZTS1FIsE = weak_odr constant
// CHECK-6: @_ZTI1FIsE = weak_odr constant
// CHECK-6-HIDDEN: @_ZTV1FIsE = weak_odr constant
// CHECK-6-HIDDEN: @_ZTV1FIsE = weak_odr unnamed_addr constant
// CHECK-6-HIDDEN: @_ZTS1FIsE = weak_odr constant
// CHECK-6-HIDDEN: @_ZTI1FIsE = weak_odr constant
// E<long> is an implicit template instantiation with a key function
// defined in this translation unit, so its vtable should have
// weak_odr linkage.
// CHECK-7: @_ZTV1EIlE = weak_odr constant
// CHECK-7: @_ZTV1EIlE = weak_odr unnamed_addr constant
// CHECK-7: @_ZTS1EIlE = weak_odr constant
// CHECK-7: @_ZTI1EIlE = weak_odr constant
// F<long> is an implicit template instantiation with no key function,
// so its vtable should have weak_odr linkage.
// CHECK-8: @_ZTV1FIlE = weak_odr constant
// CHECK-8: @_ZTV1FIlE = weak_odr unnamed_addr constant
// CHECK-8: @_ZTS1FIlE = weak_odr constant
// CHECK-8: @_ZTI1FIlE = weak_odr constant
// F<int> is an explicit template instantiation declaration without a
// key function, so its vtable should have external linkage.
// CHECK-9: @_ZTV1FIiE = external constant
// CHECK-9: @_ZTV1FIiE = external unnamed_addr constant
// E<int> is an explicit template instantiation declaration. It has a
// key function that is not instantiated, so we should only reference
// its vtable, not define it.
// CHECK-10: @_ZTV1EIiE = external constant
// CHECK-10: @_ZTV1EIiE = external unnamed_addr constant
// The anonymous struct for e has no linkage, so the vtable should have
// internal linkage.
// CHECK-11: @"_ZTV3$_0" = internal constant
// CHECK-11: @"_ZTV3$_0" = internal unnamed_addr constant
// CHECK-11: @"_ZTS3$_0" = internal constant
// CHECK-11: @"_ZTI3$_0" = internal constant
// The A vtable should have internal linkage since it is inside an anonymous
// namespace.
// CHECK-12: @_ZTVN12_GLOBAL__N_11AE = internal constant
// CHECK-12: @_ZTVN12_GLOBAL__N_11AE = internal unnamed_addr constant
// CHECK-12: @_ZTSN12_GLOBAL__N_11AE = internal constant
// CHECK-12: @_ZTIN12_GLOBAL__N_11AE = internal constant
// F<char> is an explicit specialization without a key function, so
// its vtable should have weak_odr linkage.
// CHECK-13: @_ZTV1FIcE = weak_odr constant
// CHECK-13: @_ZTV1FIcE = weak_odr unnamed_addr constant
// CHECK-13: @_ZTS1FIcE = weak_odr constant
// CHECK-13: @_ZTI1FIcE = weak_odr constant
// RUN: FileCheck --check-prefix=CHECK-G %s < %t
//
// CHECK-G: @_ZTV1GIiE = weak_odr constant
// CHECK-G: @_ZTV1GIiE = weak_odr unnamed_addr constant
template <typename T>
class G {
public:
@ -202,7 +202,7 @@ void G_f0() { new G<int>(); }
// H<int> has a key function without a body but it's a template instantiation
// so its VTable must be emmitted.
// CHECK-H: @_ZTV1HIiE = weak_odr constant
// CHECK-H: @_ZTV1HIiE = weak_odr unnamed_addr constant
template <typename T>
class H {
public: