text: // RUN: not %clang_cc1 -verify -triple x86_64-apple-darwin -emit-llvm -o - %s -std=c++11 | FileCheck %s
  
  // FIXME: The padding in all these objects should be zero-initialized.
  namespace StructUnion {
    struct A {
      int n;
      double d;
      union U {
        constexpr U(int x) : x(x) {}
        constexpr U(const char *y) : y(y) {}
        int x;
        const char *y;
      } u;
  
      constexpr A(int n, double d, int x) : n(n), d(d), u(x) {}
      constexpr A(int n, double d, const char *y) : n(n), d(d), u(y) {}
    };
  
    // CHECK: @_ZN11StructUnion1aE = constant {{.*}} { i32 1, double 2.000000e+00, {{.*}} { i32 3, [4 x i8] undef } }
    extern constexpr A a(1, 2.0, 3);
  
    // CHECK: @_ZN11StructUnion1bE = constant {{.*}} { i32 4, double 5.000000e+00, {{.*}} { i8* getelementptr inbounds ([6 x i8]* @{{.*}}, i32 0, i32 0) } }
    extern constexpr A b(4, 5, "hello");
  
    struct B {
      int n;
    };
  
    // CHECK: @_ZN11StructUnion1cE = global {{.*}} zeroinitializer
    // CHECK: @_ZN11StructUnion2c2E = global {{.*}} zeroinitializer
    B c;
    B c2 = B();
  
    // CHECK: @_ZN11StructUnion1dE = global {{.*}} zeroinitializer
    B d[10];
  
    struct C {
      constexpr C() : c(0) {}
      int c;
    };
  
    // CHECK: @_ZN11StructUnion1eE = global {{.*}} zeroinitializer
    C e[10];
  
    struct D {
      constexpr D() : d(5) {}
      int d;
    };
  
    // CHECK: @_ZN11StructUnion1fE = global {{.*}} { i32 5 }
    D f;
  
    union E {
      int a;
      void *b = &f;
    };
  
    // CHECK: @_ZN11StructUnion1gE = global {{.*}} @_ZN11StructUnion1fE
    E g;
  
    // CHECK: @_ZN11StructUnion1hE = global {{.*}} @_ZN11StructUnion1fE
    E h = E();
  }
  
  namespace BaseClass {
    template<typename T, unsigned> struct X : T {};
    struct C { char c = 1; };
    template<unsigned... Ns> struct Cs : X<C,Ns>... {};
    struct N { int n = 3; };
    struct D { double d = 4.0; };
  
    template<typename ...Ts>
    struct Test : Ts... { constexpr Test() : Ts()..., n(5) {} int n; };
  
    using Test1 = Test<N, C, Cs<1,2>, D, X<C,1>>;
    // CHECK: @_ZN9BaseClass2t1E = constant {{.*}} { i32 3, i8 1, i8 1, i8 1, double 4.000000e+00, i8 1, i32 5 }, align 8
    extern constexpr Test1 t1 = Test1();
  
    struct DN : D, N {};
    struct DND : DN, X<D,0> {};
    struct DNN : DN, X<N,0> {};
    // CHECK: @_ZN9BaseClass3dndE = constant {{.*}} { double 4.000000e+00, i32 3, double 4.000000e+00 }
    extern constexpr DND dnd = DND();
    // Note, N subobject is laid out in DN subobject's tail padding.
    // CHECK: @_ZN9BaseClass3dnnE = constant {{.*}} { double 4.000000e+00, i32 3, i32 3 }
    extern constexpr DNN dnn = DNN();
  
    struct E {};
    struct Test2 : X<E,0>, X<E,1>, X<E,2>, X<E,3> {};
    // CHECK: @_ZN9BaseClass2t2E = constant {{.*}} undef
    extern constexpr Test2 t2 = Test2();
  
    struct __attribute((packed)) PackedD { double y = 2; };
    struct Test3 : C, PackedD { constexpr Test3() {} };
    // CHECK: @_ZN9BaseClass2t3E = constant <{ i8, double }> <{ i8 1, double 2.000000e+00 }>
    extern constexpr Test3 t3 = Test3();
  }
  
  namespace Array {
    // CHECK: @_ZN5Array3arrE = constant [2 x i32] [i32 4, i32 0]
    extern constexpr int arr[2] = { 4 };
  
    // CHECK: @_ZN5Array1cE = constant [6 x [4 x i8]] [{{.*}} c"foo\00", [4 x i8] c"a\00\00\00", [4 x i8] c"bar\00", [4 x i8] c"xyz\00", [4 x i8] c"b\00\00\00", [4 x i8] c"123\00"]
    extern constexpr char c[6][4] = { "foo", "a", { "bar" }, { 'x', 'y', 'z' }, { "b" }, '1', '2', '3' };
  
    // CHECK: @_ZN5Array2ucE = constant [4 x i8] c"foo\00"
    extern constexpr unsigned char uc[] = { "foo" };
  
    struct C { constexpr C() : n(5) {} int n, m = 3 * n + 1; };
    // CHECK: @_ZN5Array5ctorsE = constant [3 x {{.*}}] [{{.*}} { i32 5, i32 16 }, {{.*}} { i32 5, i32 16 }, {{.*}} { i32 5, i32 16 }]
    extern const C ctors[3];
    constexpr C ctors[3];
  
    // CHECK: @_ZN5Array1dE = constant {{.*}} { [2 x i32] [i32 1, i32 2], [3 x i32] [i32 3, i32 4, i32 5] }
    struct D { int n[2]; int m[3]; } extern constexpr d = { 1, 2, 3, 4, 5 };
  
    struct E {
      char c[4];
      char d[4];
      constexpr E() : c("foo"), d("x") {}
    };
    // CHECK: @_ZN5Array1eE = constant {{.*}} { [4 x i8] c"foo\00", [4 x i8] c"x\00\00\00" }
    extern constexpr E e = E();
  
    // PR13290
    struct F { constexpr F() : n(4) {} int n; };
    // CHECK: @_ZN5Array2f1E = global {{.*}} zeroinitializer
    F f1[1][1][0] = { };
    // CHECK: @_ZN5Array2f2E = global {{.* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4}}
    F f2[2][2][2] = { };
  }
  
  namespace MemberPtr {
    struct B1 {
      int a, b;
      virtual void f();
      void g();
    };
    struct B2 {
      int c, d;
      virtual void h();
      void i();
    };
    struct C : B1 {
      int e;
      virtual void j();
      void k();
    };
    struct D : C, B2 {
      int z;
      virtual void l();
      void m();
    };
  
    // CHECK: @_ZN9MemberPtr2daE = constant i64 8
    // CHECK: @_ZN9MemberPtr2dbE = constant i64 12
    // CHECK: @_ZN9MemberPtr2dcE = constant i64 32
    // CHECK: @_ZN9MemberPtr2ddE = constant i64 36
    // CHECK: @_ZN9MemberPtr2deE = constant i64 16
    // CHECK: @_ZN9MemberPtr2dzE = constant i64 40
    extern constexpr int (D::*da) = &B1::a;
    extern constexpr int (D::*db) = &C::b;
    extern constexpr int (D::*dc) = &B2::c;
    extern constexpr int (D::*dd) = &D::d;
    extern constexpr int (D::*de) = &C::e;
    extern constexpr int (D::*dz) = &D::z;
  
    // CHECK: @_ZN9MemberPtr2baE = constant i64 8
    // CHECK: @_ZN9MemberPtr2bbE = constant i64 12
    // CHECK: @_ZN9MemberPtr2bcE = constant i64 8
    // CHECK: @_ZN9MemberPtr2bdE = constant i64 12
    // CHECK: @_ZN9MemberPtr2beE = constant i64 16
    // CHECK: @_ZN9MemberPtr3b1zE = constant i64 40
    // CHECK: @_ZN9MemberPtr3b2zE = constant i64 16
    extern constexpr int (B1::*ba) = (int(B1::*))&B1::a;
    extern constexpr int (B1::*bb) = (int(B1::*))&C::b;
    extern constexpr int (B2::*bc) = (int(B2::*))&B2::c;
    extern constexpr int (B2::*bd) = (int(B2::*))&D::d;
    extern constexpr int (B1::*be) = (int(B1::*))&C::e;
    extern constexpr int (B1::*b1z) = (int(B1::*))&D::z;
    extern constexpr int (B2::*b2z) = (int(B2::*))&D::z;
  
    // CHECK: @_ZN9MemberPtr2dfE = constant {{.*}} { i64 1, i64 0 }
    // CHECK: @_ZN9MemberPtr2dgE = constant {{.*}} { i64 {{.*}}2B11gEv{{.*}}, i64 0 }
    // CHECK: @_ZN9MemberPtr2dhE = constant {{.*}} { i64 1, i64 24 }
    // CHECK: @_ZN9MemberPtr2diE = constant {{.*}} { i64 {{.*}}2B21iEv{{.*}}, i64 24 }
    // CHECK: @_ZN9MemberPtr2djE = constant {{.*}} { i64 9, i64 0 }
    // CHECK: @_ZN9MemberPtr2dkE = constant {{.*}} { i64 {{.*}}1C1kEv{{.*}}, i64 0 }
    // CHECK: @_ZN9MemberPtr2dlE = constant {{.*}} { i64 17, i64 0 }
    // CHECK: @_ZN9MemberPtr2dmE = constant {{.*}} { i64 {{.*}}1D1mEv{{.*}}, i64 0 }
    extern constexpr void (D::*df)() = &C::f;
    extern constexpr void (D::*dg)() = &B1::g;
    extern constexpr void (D::*dh)() = &B2::h;
    extern constexpr void (D::*di)() = &D::i;
    extern constexpr void (D::*dj)() = &C::j;
    extern constexpr void (D::*dk)() = &C::k;
    extern constexpr void (D::*dl)() = &D::l;
    extern constexpr void (D::*dm)() = &D::m;
  
    // CHECK: @_ZN9MemberPtr2bfE = constant {{.*}} { i64 1, i64 0 }
    // CHECK: @_ZN9MemberPtr2bgE = constant {{.*}} { i64 {{.*}}2B11gEv{{.*}}, i64 0 }
    // CHECK: @_ZN9MemberPtr2bhE = constant {{.*}} { i64 1, i64 0 }
    // CHECK: @_ZN9MemberPtr2biE = constant {{.*}} { i64 {{.*}}2B21iEv{{.*}}, i64 0 }
    // CHECK: @_ZN9MemberPtr2bjE = constant {{.*}} { i64 9, i64 0 }
    // CHECK: @_ZN9MemberPtr2bkE = constant {{.*}} { i64 {{.*}}1C1kEv{{.*}}, i64 0 }
    // CHECK: @_ZN9MemberPtr3b1lE = constant {{.*}} { i64 17, i64 0 }
    // CHECK: @_ZN9MemberPtr3b1mE = constant {{.*}} { i64 {{.*}}1D1mEv{{.*}}, i64 0 }
    // CHECK: @_ZN9MemberPtr3b2lE = constant {{.*}} { i64 17, i64 -24 }
    // CHECK: @_ZN9MemberPtr3b2mE = constant {{.*}} { i64 {{.*}}1D1mEv{{.*}}, i64 -24 }
    extern constexpr void (B1::*bf)()  = (void(B1::*)())&C::f;
    extern constexpr void (B1::*bg)()  = (void(B1::*)())&B1::g;
    extern constexpr void (B2::*bh)()  = (void(B2::*)())&B2::h;
    extern constexpr void (B2::*bi)()  = (void(B2::*)())&D::i;
    extern constexpr void (B1::*bj)()  = (void(B1::*)())&C::j;
    extern constexpr void (B1::*bk)()  = (void(B1::*)())&C::k;
    extern constexpr void (B1::*b1l)() = (void(B1::*)())&D::l;
    extern constexpr void (B1::*b1m)() = (void(B1::*)())&D::m;
    extern constexpr void (B2::*b2l)() = (void(B2::*)())&D::l;
    extern constexpr void (B2::*b2m)() = (void(B2::*)())&D::m;
  }
  
  namespace LiteralReference {
    struct Lit {
      constexpr Lit() : n(5) {}
      int n;
    };
  
    // This creates a non-const temporary and binds a reference to it.
    // CHECK: @[[TEMP:.*]] = private global {{.*}} { i32 5 }, align 4
    // CHECK: @_ZN16LiteralReference3litE = constant {{.*}} @[[TEMP]], align 8
    const Lit &lit = Lit();
  
    // This creates a const temporary as part of the reference initialization.
    // CHECK: @[[TEMP:.*]] = private constant {{.*}} { i32 5 }, align 4
    // CHECK: @_ZN16LiteralReference4lit2E = constant {{.*}} @[[TEMP]], align 8
    const Lit &lit2 = {};
  
    struct A { int &&r1; const int &&r2; };
    struct B { A &&a1; const A &&a2; };
    B b = { { 0, 1 }, { 2, 3 } };
    // CHECK: @[[TEMP0:.*]] = private global i32 0, align 4
    // CHECK: @[[TEMP1:.*]] = private constant i32 1, align 4
    // CHECK: @[[TEMPA1:.*]] = private global {{.*}} { i32* @[[TEMP0]], i32* @[[TEMP1]] }, align 8
    // CHECK: @[[TEMP2:.*]] = private global i32 2, align 4
    // CHECK: @[[TEMP3:.*]] = private constant i32 3, align 4
    // CHECK: @[[TEMPA2:.*]] = private constant {{.*}} { i32* @[[TEMP2]], i32* @[[TEMP3]] }, align 8
    // CHECK: @_ZN16LiteralReference1bE = global {{.*}} { {{.*}}* @[[TEMPA1]], {{.*}}* @[[TEMPA2]] }, align 8
  
    struct Subobj {
      int a, b, c;
    };
    // CHECK: @[[TEMP:.*]] = private global {{.*}} { i32 1, i32 2, i32 3 }, align 4
    // CHECK: @_ZN16LiteralReference2soE = constant {{.*}} (i8* getelementptr {{.*}} @[[TEMP]]{{.*}}, i64 4)
    constexpr int &&so = Subobj{ 1, 2, 3 }.b;
  
    struct Dummy { int padding; };
    struct Derived : Dummy, Subobj {
      constexpr Derived() : Dummy{200}, Subobj{4, 5, 6} {}
    };
    using ConstDerived = const Derived;
    // CHECK: @[[TEMPCOMMA:.*]] = private constant {{.*}} { i32 200, i32 4, i32 5, i32 6 }
    // CHECK: @_ZN16LiteralReference5commaE = constant {{.*}} getelementptr {{.*}} @[[TEMPCOMMA]]{{.*}}, i64 8)
    constexpr const int &comma = (1, (2, ConstDerived{}).b);
  
    // CHECK: @[[TEMPDERIVED:.*]] = private global {{.*}} { i32 200, i32 4, i32 5, i32 6 }
    // CHECK: @_ZN16LiteralReference4baseE = constant {{.*}} getelementptr {{.*}} @[[TEMPDERIVED]]{{.*}}, i64 4)
    constexpr Subobj &&base = Derived{};
  
    // CHECK: @_ZN16LiteralReference7derivedE = constant {{.*}} @[[TEMPDERIVED]]
    constexpr Derived &derived = static_cast<Derived&>(base);
  }
  
  namespace NonLiteralConstexpr {
    constexpr int factorial(int n) {
      return n ? factorial(n-1) * n : 1;
    }
    extern void f(int *p);
  
    struct NonTrivialDtor {
      constexpr NonTrivialDtor() : n(factorial(5)), p(&n) {}
      ~NonTrivialDtor() {
        f(p);
      }
  
      int n;
      int *p;
    };
    static_assert(!__is_literal(NonTrivialDtor), "");
    // CHECK: @_ZN19NonLiteralConstexpr3ntdE = global {{.*}} { i32 120, i32* getelementptr
    NonTrivialDtor ntd;
  
    struct VolatileMember {
      constexpr VolatileMember() : n(5) {}
      volatile int n;
    };
    static_assert(!__is_literal(VolatileMember), "");
    // CHECK: @_ZN19NonLiteralConstexpr2vmE = global {{.*}} { i32 5 }
    VolatileMember vm;
  
    struct Both {
      constexpr Both() : n(10) {}
      ~Both();
      volatile int n;
    };
    // CHECK: @_ZN19NonLiteralConstexpr1bE = global {{.*}} { i32 10 }
    Both b;
  
    void StaticVars() {
      // CHECK: @_ZZN19NonLiteralConstexpr10StaticVarsEvE3ntd = {{.*}} { i32 120, i32* getelementptr {{.*}}
      // CHECK: @_ZGVZN19NonLiteralConstexpr10StaticVarsEvE3ntd =
      static NonTrivialDtor ntd;
      // CHECK: @_ZZN19NonLiteralConstexpr10StaticVarsEvE2vm = {{.*}} { i32 5 }
      // CHECK-NOT: @_ZGVZN19NonLiteralConstexpr10StaticVarsEvE2vm =
      static VolatileMember vm;
      // CHECK: @_ZZN19NonLiteralConstexpr10StaticVarsEvE1b = {{.*}} { i32 10 }
      // CHECK: @_ZGVZN19NonLiteralConstexpr10StaticVarsEvE1b =
      static Both b;
    }
  }
  
  // PR12067
  namespace VirtualMembers {
    struct A {
      constexpr A(double d) : d(d) {}
      virtual void f();
      double d;
    };
    struct B : A {
      constexpr B() : A(2.0), c{'h', 'e', 'l', 'l', 'o'} {}
      constexpr B(int n) : A(n), c{'w', 'o', 'r', 'l', 'd'} {}
      virtual void g();
      char c[5];
    };
    struct C {
      constexpr C() : n(64) {}
      int n;
    };
    struct D : C, A, B {
      constexpr D() : A(1.0), B(), s(5) {}
      short s;
    };
    struct E : D, B {
      constexpr E() : B(3), c{'b','y','e'} {}
      char c[3];
    };
  
    // CHECK: @_ZN14VirtualMembers1eE = global { i8**, double, i32, i8**, double, [5 x i8], i16, i8**, double, [5 x i8], [3 x i8] } { i8** getelementptr inbounds ([11 x i8*]* @_ZTVN14VirtualMembers1EE, i64 0, i64 2), double 1.000000e+00, i32 64, i8** getelementptr inbounds ([11 x i8*]* @_ZTVN14VirtualMembers1EE, i64 0, i64 5), double 2.000000e+00, [5 x i8] c"hello", i16 5, i8** getelementptr inbounds ([11 x i8*]* @_ZTVN14VirtualMembers1EE, i64 0, i64 9), double 3.000000e+00, [5 x i8] c"world", [3 x i8] c"bye" }
    E e;
  
    struct nsMemoryImpl {
      virtual void f();
    };
    // CHECK: @_ZN14VirtualMembersL13sGlobalMemoryE = internal global { i8** } { i8** getelementptr inbounds ([3 x i8*]* @_ZTVN14VirtualMembers12nsMemoryImplE, i64 0, i64 2) }
    static nsMemoryImpl sGlobalMemory;
  }
  
  namespace PR13273 {
    struct U {
      int t;
      U() = default;
    };
  
    struct S : U {
      S() = default;
    };
  
    // CHECK: @_ZN7PR132731sE = {{.*}} zeroinitializer
    extern const S s {};
  }
  
  namespace ArrayTemporary {
    struct A { const int (&x)[3]; };
    struct B { const A (&x)[2]; };
    // CHECK: @[[A1:_ZGRN14ArrayTemporary1bE.*]] = private constant [3 x i32] [i32 1, i32 2, i32 3]
    // CHECK: @[[A2:_ZGRN14ArrayTemporary1bE.*]] = private constant [3 x i32] [i32 4, i32 5, i32 6]
    // CHECK: @[[ARR:_ZGRN14ArrayTemporary1bE.*]] = private constant [2 x {{.*}}] [{{.*}} { [3 x i32]* @[[A1]] }, {{.*}} { [3 x i32]* @[[A2]] }]
    // CHECK: @[[B:_ZGRN14ArrayTemporary1bE.*]] = private global {{.*}} { [2 x {{.*}}]* @[[ARR]] }
    // CHECK: @_ZN14ArrayTemporary1bE = constant {{.*}}* @[[B]]
    B &&b = { { { { 1, 2, 3 } }, { { 4, 5, 6 } } } };
  }
  
  namespace UnemittedTemporaryDecl {
    constexpr int &&ref = 0;
    extern constexpr int &ref2 = ref;
    // CHECK: @_ZGRN22UnemittedTemporaryDecl3refE = private global i32 0
  
    // FIXME: This declaration should not be emitted -- it isn't odr-used.
    // CHECK: @_ZN22UnemittedTemporaryDecl3refE
  
    // CHECK: @_ZN22UnemittedTemporaryDecl4ref2E = constant i32* @_ZGRN22UnemittedTemporaryDecl3refE
  }
  
  // CHECK: @_ZZN12LocalVarInit3aggEvE1a = internal constant {{.*}} i32 101
  // CHECK: @_ZZN12LocalVarInit4ctorEvE1a = internal constant {{.*}} i32 102
  // CHECK: @_ZZN12LocalVarInit8mutable_EvE1a = private unnamed_addr constant {{.*}} i32 103
  
  // Constant initialization tests go before this point,
  // dynamic initialization tests go after.
  
  // We must emit a constant initializer for NonLiteralConstexpr::ntd, but also
  // emit an initializer to register its destructor.
  // CHECK: define {{.*}}cxx_global_var_init{{.*}}
  // CHECK-NOT: NonLiteralConstexpr
  // CHECK: call {{.*}}cxa_atexit{{.*}} @_ZN19NonLiteralConstexpr14NonTrivialDtorD1Ev {{.*}} @_ZN19NonLiteralConstexpr3ntdE
  // CHECK-NEXT: ret void
  
  // We don't need to emit any dynamic initialization for NonLiteralConstexpr::vm.
  // CHECK-NOT: NonLiteralConstexpr2vm
  
  // We must emit a constant initializer for NonLiteralConstexpr::b, but also
  // emit an initializer to register its destructor.
  // CHECK: define {{.*}}cxx_global_var_init{{.*}}
  // CHECK-NOT: NonLiteralConstexpr
  // CHECK: call {{.*}}cxa_atexit{{.*}} @_ZN19NonLiteralConstexpr4BothD1Ev {{.*}} @_ZN19NonLiteralConstexpr1bE
  // CHECK-NEXT: ret void
  
  // CHECK: define {{.*}}NonLiteralConstexpr10StaticVars
  // CHECK-NOT: }
  // CHECK: call {{.*}}cxa_atexit{{.*}}@_ZN19NonLiteralConstexpr14NonTrivialDtorD1Ev
  // CHECK-NOT: }
  // CHECK: call {{.*}}cxa_atexit{{.*}}@_ZN19NonLiteralConstexpr4BothD1Ev
  
  // PR12848: Don't emit dynamic initializers for local constexpr variables.
  namespace LocalVarInit {
    constexpr int f(int n) { return n; }
    struct Agg { int k; };
    struct Ctor { constexpr Ctor(int n) : k(n) {} int k; };
    struct Mutable { constexpr Mutable(int n) : k(n) {} mutable int k; };
  
    // CHECK: define {{.*}} @_ZN12LocalVarInit6scalarEv
    // CHECK-NOT: call
    // CHECK: store i32 100,
    // CHECK-NOT: call
    // CHECK: ret i32 100
    int scalar() { constexpr int a = { f(100) }; return a; }
  
    // CHECK: define {{.*}} @_ZN12LocalVarInit3aggEv
    // CHECK-NOT: call
    // CHECK: ret i32 101
    int agg() { constexpr Agg a = { f(101) }; return a.k; }
  
    // CHECK: define {{.*}} @_ZN12LocalVarInit4ctorEv
    // CHECK-NOT: call
    // CHECK: ret i32 102
    int ctor() { constexpr Ctor a = { f(102) }; return a.k; }
  
    // CHECK: define {{.*}} @_ZN12LocalVarInit8mutable_Ev
    // CHECK-NOT: call
    // CHECK: call {{.*}}memcpy{{.*}} @_ZZN12LocalVarInit8mutable_EvE1a
    // CHECK-NOT: call
    // Can't fold return value due to 'mutable'.
    // CHECK-NOT: ret i32 103
    // CHECK: }
    int mutable_() { constexpr Mutable a = { f(103) }; return a.k; }
  }
  
  namespace CrossFuncLabelDiff {
    // Make sure we refuse to constant-fold the variable b.
    constexpr long a(bool x) { return x ? 0 : (long)&&lbl + (0 && ({lbl: 0;})); }
    void test() { static long b = (long)&&lbl - a(false); lbl: return; }
    // CHECK: sub nsw i64 ptrtoint (i8* blockaddress(@_ZN18CrossFuncLabelDiff4testEv, {{.*}}) to i64),
    // CHECK: store i64 {{.*}}, i64* @_ZZN18CrossFuncLabelDiff4testEvE1b, align 8
  }
  
  // PR12012
  namespace VirtualBase {
    struct B {};
    struct D : virtual B {};
    D d;
    // CHECK: call {{.*}}@_ZN11VirtualBase1DC1Ev
  
    template<typename T> struct X : T {
      constexpr X() : T() {}
    };
    X<D> x;
    // CHECK: call {{.*}}@_ZN11VirtualBase1XINS_1DEEC1Ev
  }
  
  // PR12145
  namespace Unreferenced {
    int n;
    constexpr int *p = &n;
    // We must not emit a load of 'p' here, since it's not odr-used.
    int q = *p;
    // CHECK-NOT: _ZN12Unreferenced1pE
    // CHECK: = load i32* @_ZN12Unreferenced1nE
    // CHECK-NEXT: store i32 {{.*}}, i32* @_ZN12Unreferenced1qE
    // CHECK-NOT: _ZN12Unreferenced1pE
  
    // Technically, we are not required to substitute variables of reference types
    // initialized by constant expressions, because the special case for odr-use
    // of variables in [basic.def.odr]p2 only applies to objects. But we do so
    // anyway.
  
    constexpr int &r = n;
    // CHECK-NOT: _ZN12Unreferenced1rE
    int s = r;
  
    const int t = 1;
    const int &rt = t;
    int f(int);
    int u = f(rt);
    // CHECK: call i32 @_ZN12Unreferenced1fEi(i32 1)
  }
  
  namespace InitFromConst {
    template<typename T> void consume(T);
  
    const bool b = true;
    const int n = 5;
    constexpr double d = 4.3;
  
    struct S { int n = 7; S *p = 0; };
    constexpr S s = S();
    const S &r = s;
    constexpr const S *p = &r;
    constexpr int S::*mp = &S::n;
    constexpr int a[3] = { 1, 4, 9 };
  
    void test() {
      // CHECK: call void @_ZN13InitFromConst7consumeIbEEvT_(i1 zeroext true)
      consume(b);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIiEEvT_(i32 5)
      consume(n);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIdEEvT_(double 4.300000e+00)
      consume(d);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIRKNS_1SEEEvT_(%"struct.InitFromConst::S"* @_ZN13InitFromConstL1sE)
      consume<const S&>(s);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIRKNS_1SEEEvT_(%"struct.InitFromConst::S"* @_ZN13InitFromConstL1sE)
      consume<const S&>(r);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIPKNS_1SEEEvT_(%"struct.InitFromConst::S"* @_ZN13InitFromConstL1sE)
      consume(p);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIMNS_1SEiEEvT_(i64 0)
      consume(mp);
  
      // CHECK: call void @_ZN13InitFromConst7consumeIPKiEEvT_(i32* getelementptr inbounds ([3 x i32]* @_ZN13InitFromConstL1aE, i32 0, i32 0))
      consume(a);
    }
  }
  
  namespace Null {
    decltype(nullptr) null();
    // CHECK: call {{.*}} @_ZN4Null4nullEv(
    int *p = null();
    struct S {};
    // CHECK: call {{.*}} @_ZN4Null4nullEv(
    int S::*q = null();
  }
  