b3d99ac2cd
Use the DataLayout-aware TargetFolder instead of ConstantFolder in Clang's CGBuilder. The primary impact of this change is that GEP constant expressions are now emitted in canonical `getelementptr i8` form. This is in preparation for the migration to ptradd, which requires this form. Part of the test updates were performed by Claude Code and reviewed by me.
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
// 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 ptr] } { [5 x ptr] [ptr null, ptr @_ZTI5TemplIiE, ptr @_ZN5TemplIiE1fEv, ptr @_ZN5TemplIiE1gEv, ptr 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 nuw (i8, ptr @_ZTV4Base, i64 16)
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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 nuw (i8, ptr @_ZTV5TemplIiE, i64 16)
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// CHECK: define internal void @_ZN5TemplIiE1fEv(ptr {{[^,]*}} %this)
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// CHECK: define internal void @_ZN5TemplIiE1gEv(ptr {{[^,]*}} %this)
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