358d056c14
Emit them instead with the linkage of the VTT. I'm actually really ambivalent about this; it's what GCC does, but outside of improving code size (if the linkage is coalescing), I'm not sure it's at all relevant. Construction vtables are naturally referenced only by the VTT, which is itself only referenced by complete-object constructors and destructors; giving the construction vtables possibly-external linkage is important if you have an optimization that drills through the VTT to a reference to a particular construction vtable which it cannot just emit itself. llvm-svn: 128374
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s
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// Check mangling of Vtables, VTTs, and construction vtables that
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// involve standard substitutions.
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// CHECK: @_ZTTSd = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTVSd = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTCSd0_Si = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTCSd16_So = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTTSo = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTVSo = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTTSi = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTVSi = linkonce_odr unnamed_addr constant
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namespace std {
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struct A { A(); };
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// CHECK: define void @_ZNSt1AC1Ev(%"struct.N::std::A"* %this) unnamed_addr
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// CHECK: define void @_ZNSt1AC2Ev(%"struct.N::std::A"* %this) unnamed_addr
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A::A() { }
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};
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namespace std {
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template<typename> struct allocator { };
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}
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// CHECK: define void @_Z1fSaIcESaIiE
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void f(std::allocator<char>, std::allocator<int>) { }
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namespace std {
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template<typename, typename, typename> struct basic_string { };
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}
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// CHECK: define void @_Z1fSbIcciE
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void f(std::basic_string<char, char, int>) { }
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namespace std {
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template<typename> struct char_traits { };
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typedef std::basic_string<char, std::char_traits<char>, std::allocator<char> > string;
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}
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// CHECK: _Z1fSs
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void f(std::string) { }
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namespace std {
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template<typename, typename> struct basic_ios {
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basic_ios(int);
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virtual ~basic_ios();
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};
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template<typename charT, typename traits = char_traits<charT> >
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struct basic_istream : virtual public basic_ios<charT, traits> {
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basic_istream(int x) : basic_ios<charT, traits>(x), stored(x) { }
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int stored;
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};
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template<typename charT, typename traits = char_traits<charT> >
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struct basic_ostream : virtual public basic_ios<charT, traits> {
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basic_ostream(int x) : basic_ios<charT, traits>(x), stored(x) { }
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float stored;
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};
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template<typename charT, typename traits = char_traits<charT> >
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struct basic_iostream : public basic_istream<charT, traits>,
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public basic_ostream<charT, traits> {
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basic_iostream(int x) : basic_istream<charT, traits>(x),
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basic_ostream<charT, traits>(x),
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basic_ios<charT, traits>(x) { }
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};
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}
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// CHECK: _Z1fSi
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void f(std::basic_istream<char, std::char_traits<char> >) { }
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// CHECK: _Z1fSo
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void f(std::basic_ostream<char, std::char_traits<char> >) { }
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// CHECK: _Z1fSd
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void f(std::basic_iostream<char, std::char_traits<char> >) { }
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extern "C++" {
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namespace std
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{
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typedef void (*terminate_handler) ();
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// CHECK: _ZSt13set_terminatePFvvE
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terminate_handler set_terminate(terminate_handler) { return 0; }
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}
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}
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// Make sure we don't treat the following like std::string
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// CHECK: define void @_Z1f12basic_stringIcSt11char_traitsIcESaIcEE
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template<typename, typename, typename> struct basic_string { };
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typedef basic_string<char, std::char_traits<char>, std::allocator<char> > not_string;
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void f(not_string) { }
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// Manglings for instantiations caused by this function are at the
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// top of the test.
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void create_streams() {
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std::basic_iostream<char> bio(17);
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}
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// Make sure we don't mangle 'std' as 'St' here.
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namespace N {
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namespace std {
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struct A { void f(); };
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// CHECK: define void @_ZN1N3std1A1fEv
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void A::f() { }
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}
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}
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