derek.holloway
7502bf64a4
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32 lines
1.5 KiB
C++
32 lines
1.5 KiB
C++
// Check the layout of the vtable for a normal class.
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// RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck %s
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// We should be emitting comdats for each of the virtual function RTTI proxies
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// CHECK: $_ZTI1A.rtti_proxy = comdat any
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// VTable contains offsets and references to the hidden symbols
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// The vtable definition itself is private so we can take relative references to
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// it. The vtable symbol will be exposed through a public alias.
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// CHECK: @_ZTV1A.local = internal constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1A.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
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// CHECK: @_ZTI1A ={{.*}}constant { ptr, ptr } { ptr getelementptr inbounds (i8, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i32 8), ptr @_ZTS1A }, align 8
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// CHECK: @_ZTVN10__cxxabiv117__class_type_infoE = external global [0 x ptr]
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// CHECK: @_ZTS1A ={{.*}} constant [3 x i8] c"1A\00", align 1
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// The rtti should be in a comdat
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// CHECK: @_ZTI1A.rtti_proxy = {{.*}}comdat
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// The vtable symbol is exposed through an alias.
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// @_ZTV1A = dso_local unnamed_addr alias { [3 x i32] }, ptr @_ZTV1A.local
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class A {
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public:
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virtual void foo();
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};
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void A::foo() {}
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void A_foo(A *a) {
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a->foo();
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}
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