6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie
and COFF, but not for Mach-O. This nuance causes unneeded binary format differences.
This patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `
if there is an explicit linkage.
* Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar.
* Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
114 lines
3.4 KiB
C++
114 lines
3.4 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: @_ZTVSd = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTTSd = 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: @_ZTVSi = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTTSi = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTVSo = linkonce_odr unnamed_addr constant
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// CHECK: @_ZTTSo = linkonce_odr unnamed_addr constant
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namespace std {
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struct A { A(); };
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// CHECK-LABEL: define{{.*}} void @_ZNSt1AC2Ev(%"struct.std::A"* {{[^,]*}} %this) unnamed_addr
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// CHECK-LABEL: define{{.*}} void @_ZNSt1AC1Ev(%"struct.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-LABEL: 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-LABEL: 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-LABEL: 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-LABEL: define{{.*}} void @_ZN1N3std1A1fEv
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void A::f() { }
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}
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}
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