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-rw-r--r--test/CodeGenCXX/apple-kext-indirect-call.cpp42
1 files changed, 42 insertions, 0 deletions
diff --git a/test/CodeGenCXX/apple-kext-indirect-call.cpp b/test/CodeGenCXX/apple-kext-indirect-call.cpp
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+++ b/test/CodeGenCXX/apple-kext-indirect-call.cpp
@@ -0,0 +1,42 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fapple-kext -emit-llvm -o - %s | FileCheck %s
+
+// CHECK: @_ZTV5TemplIiE = internal unnamed_addr constant [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]
+
+struct Base {
+ virtual void abc(void) const;
+};
+
+void Base::abc(void) const {}
+
+void FUNC(Base* p) {
+ p->Base::abc();
+}
+
+// CHECK: getelementptr inbounds (void (%struct.Base*)*, void (%struct.Base*)** bitcast ([4 x i8*]* @_ZTV4Base to void (%struct.Base*)**), i64 2)
+// CHECK-NOT: call void @_ZNK4Base3abcEv
+
+template<class T>
+struct Templ {
+ virtual void f() {}
+ virtual void g() {}
+};
+template<class T>
+struct SubTempl : public Templ<T> {
+ virtual void f() {} // override
+ virtual void g() {} // override
+};
+
+void f(SubTempl<int>* t) {
+ // Qualified calls go through the (qualified) vtable in apple-kext mode.
+ // Since t's this pointer points to SubTempl's vtable, the call needs
+ // to load Templ<int>'s vtable. Hence, Templ<int>::g needs to be
+ // instantiated in this TU, for it's referenced by the vtable.
+ // (This happens only in apple-kext mode; elsewhere virtual calls can always
+ // use the vtable pointer off this instead of having to load the vtable
+ // symbol.)
+ t->Templ::f();
+}
+
+// CHECK: getelementptr inbounds (void (%struct.Templ*)*, void (%struct.Templ*)** bitcast ([5 x i8*]* @_ZTV5TemplIiE to void (%struct.Templ*)**), i64 2)
+// CHECK: define internal void @_ZN5TemplIiE1fEv(%struct.Templ* %this)
+// CHECK: define internal void @_ZN5TemplIiE1gEv(%struct.Templ* %this)
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