clang/test/CodeGenCXX/vtt-layout.cpp

   1 // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -std=c++11 -emit-llvm -o - | FileCheck %s
   2
   3 // Test1::B should just have a single entry in its VTT, which points to the vtable.
   4 namespace Test1 {
   5 struct A { };
   6
   7 struct B : virtual A {
   8   virtual void f();
   9 };
  10
  11 void B::f() { }
  12 }
  13
  14 // Check that we don't add a secondary virtual pointer for Test2::A, since Test2::A doesn't have any virtual member functions or bases.
  15 namespace Test2 {
  16   struct A { };
  17
  18   struct B : A { virtual void f(); };
  19   struct C : virtual B { };
  20
  21   C c;
  22 }
  23
  24 // This is the sample from the C++ Itanium ABI, p2.6.2.
  25 namespace Test3 {
  26   class A1 { int i; };
  27   class A2 { int i; virtual void f(); };
  28   class V1 : public A1, public A2 { int i; };
  29   class B1 { int i; };
  30   class B2 { int i; };
  31   class V2 : public B1, public B2, public virtual V1 { int i; };
  32   class V3 {virtual void g(); };
  33   class C1 : public virtual V1 { int i; };
  34   class C2 : public virtual V3, virtual V2 { int i; };
  35   class X1 { int i; };
  36   class C3 : public X1 { int i; };
  37   class D : public C1, public C2, public C3 { int i;  };
  38
  39   D d;
  40 }
  41
  42 // This is the sample from the C++ Itanium ABI, p2.6.2, with the change suggested
  43 // (making A2 a virtual base of V1)
  44 namespace Test4 {
  45   class A1 { int i; };
  46   class A2 { int i; virtual void f(); };
  47   class V1 : public A1, public virtual A2 { int i; };
  48   class B1 { int i; };
  49   class B2 { int i; };
  50   class V2 : public B1, public B2, public virtual V1 { int i; };
  51   class V3 {virtual void g(); };
  52   class C1 : public virtual V1 { int i; };
  53   class C2 : public virtual V3, virtual V2 { int i; };
  54   class X1 { int i; };
  55   class C3 : public X1 { int i; };
  56   class D : public C1, public C2, public C3 { int i;  };
  57
  58   D d;
  59 }
  60
  61 namespace Test5 {
  62   struct A {
  63     virtual void f() = 0;
  64     virtual void anchor();
  65   };
  66
  67   void A::anchor() {
  68   }
  69 }
  70
  71 namespace Test6 {
  72   struct A {
  73     virtual void f() = delete;
  74     virtual void anchor();
  75   };
  76
  77   void A::anchor() {
  78   }
  79 }
  80
  81 // CHECK: @_ZTTN5Test11BE ={{.*}} unnamed_addr constant [1 x ptr] [ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTVN5Test11BE, i32 0, inrange i32 0, i32 3)]
  82 // CHECK: @_ZTVN5Test51AE ={{.*}} unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTIN5Test51AE, ptr @__cxa_pure_virtual, ptr @_ZN5Test51A6anchorEv] }
  83 // CHECK: @_ZTVN5Test61AE ={{.*}} unnamed_addr constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr @_ZTIN5Test61AE, ptr @__cxa_deleted_virtual, ptr @_ZN5Test61A6anchorEv] }
  84 // CHECK: @_ZTTN5Test21CE = linkonce_odr unnamed_addr constant [2 x ptr] [ptr getelementptr inbounds ({ [5 x ptr] }, ptr @_ZTVN5Test21CE, i32 0, inrange i32 0, i32 4), ptr getelementptr inbounds ({ [5 x ptr] }, ptr @_ZTVN5Test21CE, i32 0, inrange i32 0, i32 4)]
  85 // CHECK: @_ZTTN5Test31DE = linkonce_odr unnamed_addr constant [13 x ptr] [ptr getelementptr inbounds ({ [5 x ptr], [7 x ptr], [4 x ptr], [3 x ptr] }, ptr @_ZTVN5Test31DE, i32 0, inrange i32 0, i32 5), ptr getelementptr inbounds ({ [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE0_NS_2C1E, i32 0, inrange i32 0, i32 3), ptr getelementptr inbounds ({ [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE0_NS_2C1E, i32 0, inrange i32 1, i32 3), ptr getelementptr inbounds ({ [7 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE16_NS_2C2E, i32 0, inrange i32 0, i32 6), ptr getelementptr inbounds ({ [7 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE16_NS_2C2E, i32 0, inrange i32 0, i32 6), ptr getelementptr inbounds ({ [7 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE16_NS_2C2E, i32 0, inrange i32 1, i32 3), ptr getelementptr inbounds ({ [7 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE16_NS_2C2E, i32 0, inrange i32 2, i32 3), ptr getelementptr inbounds ({ [5 x ptr], [7 x ptr], [4 x ptr], [3 x ptr] }, ptr @_ZTVN5Test31DE, i32 0, inrange i32 2, i32 3), ptr getelementptr inbounds ({ [5 x ptr], [7 x ptr], [4 x ptr], [3 x ptr] }, ptr @_ZTVN5Test31DE, i32 0, inrange i32 1, i32 6), ptr getelementptr inbounds ({ [5 x ptr], [7 x ptr], [4 x ptr], [3 x ptr] }, ptr @_ZTVN5Test31DE, i32 0, inrange i32 1, i32 6), ptr getelementptr inbounds ({ [5 x ptr], [7 x ptr], [4 x ptr], [3 x ptr] }, ptr @_ZTVN5Test31DE, i32 0, inrange i32 3, i32 3), ptr getelementptr inbounds ({ [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE64_NS_2V2E, i32 0, inrange i32 0, i32 3), ptr getelementptr inbounds ({ [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test31DE64_NS_2V2E, i32 0, inrange i32 1, i32 3)]
  86 // CHECK: @_ZTVN5Test41DE = linkonce_odr unnamed_addr constant { [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] } { [6 x ptr] [ptr inttoptr (i64 72 to ptr), ptr inttoptr (i64 16 to ptr), ptr inttoptr (i64 56 to ptr), ptr inttoptr (i64 40 to ptr), ptr null, ptr @_ZTIN5Test41DE], [8 x ptr] [ptr inttoptr (i64 40 to ptr), ptr inttoptr (i64 24 to ptr), ptr inttoptr (i64 56 to ptr), ptr null, ptr null, ptr inttoptr (i64 -16 to ptr), ptr @_ZTIN5Test41DE, ptr @_ZN5Test42V31gEv], [3 x ptr] [ptr inttoptr (i64 16 to ptr), ptr inttoptr (i64 -40 to ptr), ptr @_ZTIN5Test41DE], [4 x ptr] [ptr null, ptr inttoptr (i64 -56 to ptr), ptr @_ZTIN5Test41DE, ptr @_ZN5Test42A21fEv], [4 x ptr] [ptr inttoptr (i64 -16 to ptr), ptr inttoptr (i64 -32 to ptr), ptr inttoptr (i64 -72 to ptr), ptr @_ZTIN5Test41DE] }
  87 // CHECK: @_ZTTN5Test41DE = linkonce_odr unnamed_addr constant [19 x ptr] [ptr getelementptr inbounds ({ [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] }, ptr @_ZTVN5Test41DE, i32 0, inrange i32 0, i32 6), ptr getelementptr inbounds ({ [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE0_NS_2C1E, i32 0, inrange i32 0, i32 4), ptr getelementptr inbounds ({ [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE0_NS_2C1E, i32 0, inrange i32 1, i32 3), ptr getelementptr inbounds ({ [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE0_NS_2C1E, i32 0, inrange i32 2, i32 3), ptr getelementptr inbounds ({ [8 x ptr], [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE16_NS_2C2E, i32 0, inrange i32 0, i32 7), ptr getelementptr inbounds ({ [8 x ptr], [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE16_NS_2C2E, i32 0, inrange i32 0, i32 7), ptr getelementptr inbounds ({ [8 x ptr], [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE16_NS_2C2E, i32 0, inrange i32 1, i32 4), ptr getelementptr inbounds ({ [8 x ptr], [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE16_NS_2C2E, i32 0, inrange i32 2, i32 3), ptr getelementptr inbounds ({ [8 x ptr], [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE16_NS_2C2E, i32 0, inrange i32 3, i32 3), ptr getelementptr inbounds ({ [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] }, ptr @_ZTVN5Test41DE, i32 0, inrange i32 2, i32 3), ptr getelementptr inbounds ({ [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] }, ptr @_ZTVN5Test41DE, i32 0, inrange i32 3, i32 3), ptr getelementptr inbounds ({ [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] }, ptr @_ZTVN5Test41DE, i32 0, inrange i32 1, i32 7), ptr getelementptr inbounds ({ [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] }, ptr @_ZTVN5Test41DE, i32 0, inrange i32 1, i32 7), ptr getelementptr inbounds ({ [6 x ptr], [8 x ptr], [3 x ptr], [4 x ptr], [4 x ptr] }, ptr @_ZTVN5Test41DE, i32 0, inrange i32 4, i32 4), ptr getelementptr inbounds ({ [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE40_NS_2V1E, i32 0, inrange i32 0, i32 3), ptr getelementptr inbounds ({ [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE40_NS_2V1E, i32 0, inrange i32 1, i32 3), ptr getelementptr inbounds ({ [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE72_NS_2V2E, i32 0, inrange i32 0, i32 4), ptr getelementptr inbounds ({ [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE72_NS_2V2E, i32 0, inrange i32 1, i32 3), ptr getelementptr inbounds ({ [4 x ptr], [3 x ptr], [4 x ptr] }, ptr @_ZTCN5Test41DE72_NS_2V2E, i32 0, inrange i32 2, i32 3)]
  88 // CHECK: declare void @__cxa_pure_virtual() unnamed_addr
  89 // CHECK: declare void @__cxa_deleted_virtual() unnamed_addr