43 lines
1.7 KiB
C++
43 lines
1.7 KiB
C++
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fapple-kext -emit-llvm -o - %s | FileCheck %s
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// CHECK: @_ZTV5TemplIiE = internal unnamed_addr constant { [5 x i8*] } { [5 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI5TemplIiE to i8*), i8* bitcast (void (%struct.Templ*)* @_ZN5TemplIiE1fEv to i8*), i8* bitcast (void (%struct.Templ*)* @_ZN5TemplIiE1gEv to i8*), i8* null] }
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struct Base {
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virtual void abc(void) const;
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};
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void Base::abc(void) const {}
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void FUNC(Base* p) {
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p->Base::abc();
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}
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// CHECK: getelementptr inbounds (void (%struct.Base*)*, void (%struct.Base*)** bitcast ({ [4 x i8*] }* @_ZTV4Base to void (%struct.Base*)**), i64 2)
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// CHECK-NOT: call void @_ZNK4Base3abcEv
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template<class T>
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struct Templ {
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virtual void f() {}
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virtual void g() {}
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};
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template<class T>
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struct SubTempl : public Templ<T> {
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virtual void f() {} // override
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virtual void g() {} // override
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};
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void f(SubTempl<int>* t) {
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// Qualified calls go through the (qualified) vtable in apple-kext mode.
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// Since t's this pointer points to SubTempl's vtable, the call needs
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// to load Templ<int>'s vtable. Hence, Templ<int>::g needs to be
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// instantiated in this TU, for it's referenced by the vtable.
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// (This happens only in apple-kext mode; elsewhere virtual calls can always
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// use the vtable pointer off this instead of having to load the vtable
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// symbol.)
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t->Templ::f();
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}
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// CHECK: getelementptr inbounds (void (%struct.Templ*)*, void (%struct.Templ*)** bitcast ({ [5 x i8*] }* @_ZTV5TemplIiE to void (%struct.Templ*)**), i64 2)
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// CHECK: define internal void @_ZN5TemplIiE1fEv(%struct.Templ* {{[^,]*}} %this)
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// CHECK: define internal void @_ZN5TemplIiE1gEv(%struct.Templ* {{[^,]*}} %this)
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