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0f1c1be196
We have a new policy in place making links to private resources something we try to avoid in source and test files. Normally, we'd organically switch to the new policy rather than make a sweeping change across a project. However, Clang is in a somewhat special circumstance currently: recently, I've had several new contributors run into rdar links around test code which their patch was changing the behavior of. This turns out to be a surprisingly bad experience, especially for newer folks, for a handful of reasons: not understanding what the link is and feeling intimidated by it, wondering whether their changes are actually breaking something important to a downstream in some way, having to hunt down strangers not involved with the patch to impose on them for help, accidental pressure from asking for potentially private IP to be made public, etc. Because folks run into these links entirely by chance (through fixing bugs or working on new features), there's not really a set of problematic links to focus on -- all of the links have basically the same potential for causing these problems. As a result, this is an omnibus patch to remove all such links. This was not a mechanical change; it was done by manually searching for rdar, radar, radr, and other variants to find all the various problematic links. From there, I tried to retain or reword the surrounding comments so that we would lose as little context as possible. However, because most links were just a plain link with no supporting context, the majority of the changes are simple removals. Differential Review: https://reviews.llvm.org/D158071
218 lines
6.7 KiB
C++
218 lines
6.7 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -o %t
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// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -std=c++03 -o %t.03
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// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -std=c++11 -o %t.11
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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -disable-llvm-passes -O3 -emit-llvm -o %t.opt
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// RUN: FileCheck %s < %t
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// RUN: FileCheck %s < %t.03
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// RUN: FileCheck %s < %t.11
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// RUN: FileCheck --check-prefix=CHECK-OPT %s < %t.opt
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namespace {
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struct A {
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virtual void f() { }
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};
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}
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void f() { A b; }
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struct B {
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B();
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virtual void f();
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};
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B::B() { }
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struct C : virtual B {
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C();
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virtual void f() { }
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};
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C::C() { }
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struct D {
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virtual void f();
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};
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void D::f() { }
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static struct : D { } e;
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// Force 'e' to be constructed and therefore have a vtable defined.
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void use_e() {
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e.f();
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}
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// The destructor is the key function.
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template<typename T>
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struct E {
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virtual ~E();
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};
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template<typename T> E<T>::~E() { }
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// Anchor is the key function
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template<>
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struct E<char> {
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virtual void anchor();
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};
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void E<char>::anchor() { }
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template struct E<short>;
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extern template struct E<int>;
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void use_E() {
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E<int> ei;
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(void)ei;
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E<long> el;
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(void)el;
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}
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// No key function
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template<typename T>
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struct F {
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virtual void foo() { }
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};
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// No key function
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template<>
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struct F<char> {
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virtual void foo() { }
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};
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template struct F<short>;
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extern template struct F<int>;
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void use_F() {
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F<char> fc;
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fc.foo();
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F<int> fi;
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fi.foo();
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F<long> fl;
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(void)fl;
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}
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// B has a key function that is not defined in this translation unit so its vtable
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// has external linkage.
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// CHECK-DAG: @_ZTV1B = external unnamed_addr constant
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// C has no key function, so its vtable should have weak_odr linkage
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// and hidden visibility.
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// CHECK-DAG: @_ZTV1C = linkonce_odr unnamed_addr constant {{.*}}, comdat, align 8{{$}}
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// CHECK-DAG: @_ZTS1C = linkonce_odr constant {{.*}}, comdat, align 1{{$}}
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// CHECK-DAG: @_ZTI1C = linkonce_odr constant {{.*}}, comdat, align 8{{$}}
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// CHECK-DAG: @_ZTT1C = linkonce_odr unnamed_addr constant {{.*}}, comdat, align 8{{$}}
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// D has a key function that is defined in this translation unit so its vtable is
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// defined in the translation unit.
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// CHECK-DAG: @_ZTV1D ={{.*}} unnamed_addr constant
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// CHECK-DAG: @_ZTS1D ={{.*}} constant
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// CHECK-DAG: @_ZTI1D ={{.*}} constant
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// E<char> is an explicit specialization with a key function defined
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// in this translation unit, so its vtable should have external
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// linkage.
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// CHECK-DAG: @_ZTV1EIcE ={{.*}} unnamed_addr constant
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// CHECK-DAG: @_ZTS1EIcE ={{.*}} constant
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// CHECK-DAG: @_ZTI1EIcE ={{.*}} constant
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// E<short> is an explicit template instantiation with a key function
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// defined in this translation unit, so its vtable should have
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// weak_odr linkage.
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// CHECK-DAG: @_ZTV1EIsE = weak_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1EIsE = weak_odr constant {{.*}}, comdat, align 1{{$}}
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// CHECK-DAG: @_ZTI1EIsE = weak_odr constant {{.*}}, comdat, align 8{{$}}
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// F<short> is an explicit template instantiation without a key
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// function, so its vtable should have weak_odr linkage
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// CHECK-DAG: @_ZTV1FIsE = weak_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1FIsE = weak_odr constant {{.*}}, comdat, align 1{{$}}
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// CHECK-DAG: @_ZTI1FIsE = weak_odr constant {{.*}}, comdat, align 8{{$}}
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// E<long> is an implicit template instantiation with a key function
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// defined in this translation unit, so its vtable should have
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// linkonce_odr linkage.
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// CHECK-DAG: @_ZTV1EIlE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1EIlE = linkonce_odr constant {{.*}}, comdat, align 1{{$}}
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// CHECK-DAG: @_ZTI1EIlE = linkonce_odr constant {{.*}}, comdat, align 8{{$}}
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// F<long> is an implicit template instantiation with no key function,
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// so its vtable should have linkonce_odr linkage.
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// CHECK-DAG: @_ZTV1FIlE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1FIlE = linkonce_odr constant {{.*}}, comdat, align 1{{$}}
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// CHECK-DAG: @_ZTI1FIlE = linkonce_odr constant {{.*}}, comdat, align 8{{$}}
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// F<int> is an explicit template instantiation declaration without a
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// key function, so its vtable should have external linkage.
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// CHECK-DAG: @_ZTV1FIiE = external unnamed_addr constant
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// CHECK-OPT-DAG: @_ZTV1FIiE = available_externally unnamed_addr constant
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// E<int> is an explicit template instantiation declaration. It has a
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// key function is not instantiated, so we know that vtable definition
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// will be generated in TU where key function will be defined
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// so we can mark it as external (without optimizations) and
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// available_externally (with optimizations) because all of the inline
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// virtual functions have been emitted.
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// CHECK-DAG: @_ZTV1EIiE = external unnamed_addr constant
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// CHECK-OPT-DAG: @_ZTV1EIiE = available_externally unnamed_addr constant
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// The anonymous struct for e has no linkage, so the vtable should have
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// internal linkage.
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// CHECK-DAG: @"_ZTV3$_0" = internal unnamed_addr constant
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// CHECK-DAG: @"_ZTS3$_0" = internal constant
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// CHECK-DAG: @"_ZTI3$_0" = internal constant
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// The A vtable should have internal linkage since it is inside an anonymous
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// namespace.
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// CHECK-DAG: @_ZTVN12_GLOBAL__N_11AE = internal unnamed_addr constant
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// CHECK-DAG: @_ZTSN12_GLOBAL__N_11AE = internal constant
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// CHECK-DAG: @_ZTIN12_GLOBAL__N_11AE = internal constant
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// F<char> is an explicit specialization without a key function, so
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// its vtable should have linkonce_odr linkage.
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// CHECK-DAG: @_ZTV1FIcE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1FIcE = linkonce_odr constant {{.*}}, comdat, align 1{{$}}
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// CHECK-DAG: @_ZTI1FIcE = linkonce_odr constant {{.*}}, comdat, align 8{{$}}
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// CHECK-DAG: @_ZTV1GIiE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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template <typename T>
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class G {
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public:
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G() {}
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virtual void f0();
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virtual void f1();
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};
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template <>
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void G<int>::f1() {}
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template <typename T>
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void G<T>::f0() {}
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void G_f0() { new G<int>(); }
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// H<int> has a key function without a body but it's a template instantiation
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// so its VTable must be emitted.
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// CHECK-DAG: @_ZTV1HIiE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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template <typename T>
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class H {
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public:
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virtual ~H();
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};
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void use_H() {
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H<int> h;
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}
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// I<int> has an explicit instantiation declaration and needs a VTT and
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// construction vtables.
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// CHECK-DAG: @_ZTV1IIiE = external unnamed_addr constant
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// CHECK-DAG: @_ZTT1IIiE = external unnamed_addr constant
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// CHECK-NOT: @_ZTC1IIiE
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//
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// CHECK-OPT-DAG: @_ZTV1IIiE = available_externally unnamed_addr constant
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// CHECK-OPT-DAG: @_ZTT1IIiE = available_externally unnamed_addr constant
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struct VBase1 { virtual void f(); }; struct VBase2 : virtual VBase1 {};
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template<typename T>
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struct I : VBase2 {};
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extern template struct I<int>;
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I<int> i;
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