a2347baaec
Because references must be initialized using some evaluated expression, they must point to something, and a callee can assume the reference parameter is dereferenceable. Taking advantage of a new attribute just added to LLVM, mark them as such. Because dereferenceability in addrspace(0) implies nonnull in the backend, we don't need both attributes. However, we need to know the size of the object to use the dereferenceable attribute, so for incomplete types we still emit only nonnull. llvm-svn: 213386
262 lines
8.2 KiB
C++
262 lines
8.2 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-macosx10.7.0 -emit-llvm -o - %s | FileCheck %s
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// CHECK: @_ZZNK7PR12917IJiiEE1nMUlvE_clEvE1n = linkonce_odr global i32 0
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// CHECK: @_ZZZN7PR12917IJicdEEC1EicdEd_NKUlvE_clEvE1n = linkonce_odr global i32 0
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// CHECK: @_ZZZN7PR12917IJicdEEC1EicdEd0_NKUlvE_clEvE1n = linkonce_odr global i32 0
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// CHECK: @_ZZZN7PR12917IJicdEEC1EicdEd1_NKUlvE_clEvE1n = linkonce_odr global i32 0
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// CHECK-LABEL: define linkonce_odr void @_Z11inline_funci
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inline void inline_func(int n) {
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// CHECK: call i32 @_ZZ11inline_funciENKUlvE_clEv
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int i = []{ return 1; }();
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// CHECK: call i32 @_ZZ11inline_funciENKUlvE0_clEv
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int j = [=] { return n + i; }();
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// CHECK: call double @_ZZ11inline_funciENKUlvE1_clEv
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int k = [=] () -> double { return n + i; }();
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// CHECK: call i32 @_ZZ11inline_funciENKUliE_clEi
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int l = [=] (int x) -> int { return x + i; }(n);
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int inner(int i = []{ return 17; }());
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// CHECK: call i32 @_ZZ11inline_funciENKUlvE2_clEv
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// CHECK-NEXT: call i32 @_Z5inneri
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inner();
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// CHECK-NEXT: ret void
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}
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void call_inline_func() {
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inline_func(17);
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}
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struct S {
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void f(int = []{return 1;}()
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+ []{return 2;}(),
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int = []{return 3;}());
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void g(int, int);
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};
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void S::g(int i = []{return 1;}(),
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int j = []{return 2; }()) {}
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// CHECK-LABEL: define void @_Z6test_S1S
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void test_S(S s) {
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// CHECK: call i32 @_ZZN1S1fEiiEd0_NKUlvE_clEv
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// CHECK-NEXT: call i32 @_ZZN1S1fEiiEd0_NKUlvE0_clEv
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// CHECK-NEXT: add nsw i32
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// CHECK-NEXT: call i32 @_ZZN1S1fEiiEd_NKUlvE_clEv
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// CHECK-NEXT: call void @_ZN1S1fEii
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s.f();
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// NOTE: These manglings don't actually matter that much, because
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// the lambdas in the default arguments of g() won't be seen by
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// multiple translation units. We check them mainly to ensure that they don't
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// get the special mangling for lambdas in in-class default arguments.
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// CHECK: call i32 @"_ZNK1S3$_0clEv"
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// CHECK-NEXT: call i32 @"_ZNK1S3$_1clEv"
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// CHECK-NEXT: call void @_ZN1S1gEi
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s.g();
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// CHECK-NEXT: ret void
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}
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// Check the linkage of the lambda call operators used in test_S.
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// CHECK-LABEL: define linkonce_odr i32 @_ZZN1S1fEiiEd0_NKUlvE_clEv
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// CHECK: ret i32 1
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// CHECK-LABEL: define linkonce_odr i32 @_ZZN1S1fEiiEd0_NKUlvE0_clEv
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// CHECK: ret i32 2
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// CHECK-LABEL: define linkonce_odr i32 @_ZZN1S1fEiiEd_NKUlvE_clEv
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// CHECK: ret i32 3
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// CHECK-LABEL: define internal i32 @"_ZNK1S3$_0clEv"
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// CHECK: ret i32 1
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// CHECK-LABEL: define internal i32 @"_ZNK1S3$_1clEv"
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// CHECK: ret i32 2
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template<typename T>
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struct ST {
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void f(T = []{return T() + 1;}()
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+ []{return T() + 2;}(),
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T = []{return T(3);}());
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};
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// CHECK-LABEL: define void @_Z7test_ST2STIdE
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void test_ST(ST<double> st) {
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// CHECK: call double @_ZZN2STIdE1fEddEd0_NKUlvE_clEv
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// CHECK-NEXT: call double @_ZZN2STIdE1fEddEd0_NKUlvE0_clEv
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// CHECK-NEXT: fadd double
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// CHECK-NEXT: call double @_ZZN2STIdE1fEddEd_NKUlvE_clEv
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// CHECK-NEXT: call void @_ZN2STIdE1fEdd
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st.f();
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// CHECK-NEXT: ret void
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}
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// Check the linkage of the lambda call operators used in test_ST.
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// CHECK-LABEL: define linkonce_odr double @_ZZN2STIdE1fEddEd0_NKUlvE_clEv
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// CHECK: ret double 1
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// CHECK-LABEL: define linkonce_odr double @_ZZN2STIdE1fEddEd0_NKUlvE0_clEv
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// CHECK: ret double 2
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// CHECK-LABEL: define linkonce_odr double @_ZZN2STIdE1fEddEd_NKUlvE_clEv
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// CHECK: ret double 3
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template<typename T>
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struct StaticMembers {
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static T x;
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static T y;
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static T z;
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static int (*f)();
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};
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template<typename T> int accept_lambda(T);
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template<typename T>
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T StaticMembers<T>::x = []{return 1;}() + []{return 2;}();
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template<typename T>
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T StaticMembers<T>::y = []{return 3;}();
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template<typename T>
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T StaticMembers<T>::z = accept_lambda([]{return 4;});
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template<typename T>
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int (*StaticMembers<T>::f)() = []{return 5;};
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// CHECK-LABEL: define internal void @__cxx_global_var_init()
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// CHECK: call i32 @_ZNK13StaticMembersIfE1xMUlvE_clEv
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// CHECK-NEXT: call i32 @_ZNK13StaticMembersIfE1xMUlvE0_clEv
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// CHECK-NEXT: add nsw
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// CHECK-LABEL: define linkonce_odr i32 @_ZNK13StaticMembersIfE1xMUlvE_clEv
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// CHECK: ret i32 1
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// CHECK-LABEL: define linkonce_odr i32 @_ZNK13StaticMembersIfE1xMUlvE0_clEv
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// CHECK: ret i32 2
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template float StaticMembers<float>::x;
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// CHECK-LABEL: define internal void @__cxx_global_var_init1()
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// CHECK: call i32 @_ZNK13StaticMembersIfE1yMUlvE_clEv
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// CHECK-LABEL: define linkonce_odr i32 @_ZNK13StaticMembersIfE1yMUlvE_clEv
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// CHECK: ret i32 3
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template float StaticMembers<float>::y;
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// CHECK-LABEL: define internal void @__cxx_global_var_init2()
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// CHECK: call i32 @_Z13accept_lambdaIN13StaticMembersIfE1zMUlvE_EEiT_
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// CHECK: declare i32 @_Z13accept_lambdaIN13StaticMembersIfE1zMUlvE_EEiT_()
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template float StaticMembers<float>::z;
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// CHECK-LABEL: define internal void @__cxx_global_var_init3()
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// CHECK: call {{.*}} @_ZNK13StaticMembersIfE1fMUlvE_cvPFivEEv
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// CHECK-LABEL: define linkonce_odr i32 ()* @_ZNK13StaticMembersIfE1fMUlvE_cvPFivEEv
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template int (*StaticMembers<float>::f)();
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// CHECK-LABEL: define internal void @__cxx_global_var_init4
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// CHECK: call i32 @"_ZNK13StaticMembersIdE3$_2clEv"
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// CHECK-LABEL: define internal i32 @"_ZNK13StaticMembersIdE3$_2clEv"
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// CHECK: ret i32 42
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template<> double StaticMembers<double>::z = []{return 42; }();
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template<typename T>
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void func_template(T = []{ return T(); }());
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// CHECK-LABEL: define void @_Z17use_func_templatev()
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void use_func_template() {
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// CHECK: call i32 @"_ZZ13func_templateIiEvT_ENK3$_3clEv"
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func_template<int>();
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}
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template<typename...T> struct PR12917 {
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PR12917(T ...t = []{ static int n = 0; return ++n; }());
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static int n[3];
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};
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template<typename...T> int PR12917<T...>::n[3] = {
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[]{ static int n = 0; return ++n; }()
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};
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// CHECK: call i32 @_ZZN7PR12917IJicdEEC1EicdEd1_NKUlvE_clEv(
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// CHECK: call i32 @_ZZN7PR12917IJicdEEC1EicdEd0_NKUlvE_clEv(
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// CHECK: call i32 @_ZZN7PR12917IJicdEEC1EicdEd_NKUlvE_clEv(
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// CHECK: call void @_ZN7PR12917IJicdEEC1Eicd(
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PR12917<int, char, double> pr12917;
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int *pr12917_p = PR12917<int, int>::n;
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namespace std {
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struct type_info;
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}
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namespace PR12123 {
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struct A { virtual ~A(); } g;
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struct B {
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void f(const std::type_info& x = typeid([]()->A& { return g; }()));
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void h();
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};
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void B::h() { f(); }
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}
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// CHECK-LABEL: define linkonce_odr dereferenceable({{[0-9]+}}) %"struct.PR12123::A"* @_ZZN7PR121231B1fERKSt9type_infoEd_NKUlvE_clEv
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namespace PR12808 {
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template <typename> struct B {
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int a;
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template <typename L> constexpr B(L&& x) : a(x()) { }
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};
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template <typename> void b(int) {
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[&]{ (void)B<int>([&]{ return 1; }); }();
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}
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void f() {
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b<int>(1);
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}
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// CHECK-LABEL: define linkonce_odr void @_ZZN7PR128081bIiEEviENKUlvE_clEv
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// CHECK-LABEL: define linkonce_odr i32 @_ZZZN7PR128081bIiEEviENKUlvE_clEvENKUlvE_clEv
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}
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// CHECK-LABEL: define linkonce_odr void @_Z1fIZZNK23TestNestedInstantiationclEvENKUlvE_clEvEUlvE_EvT_
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struct Members {
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int x = [] { return 1; }() + [] { return 2; }();
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int y = [] { return 3; }();
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};
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void test_Members() {
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// CHECK-LABEL: define linkonce_odr void @_ZN7MembersC2Ev
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// CHECK: call i32 @_ZNK7Members1xMUlvE_clEv
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// CHECK-NEXT: call i32 @_ZNK7Members1xMUlvE0_clE
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// CHECK-NEXT: add nsw i32
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// CHECK: call i32 @_ZNK7Members1yMUlvE_clEv
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Members members;
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// CHECK: ret void
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}
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template<typename P> void f(P) { }
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struct TestNestedInstantiation {
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void operator()() const {
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[]() -> void {
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return f([]{});
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}();
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}
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};
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void test_NestedInstantiation() {
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TestNestedInstantiation()();
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}
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// Check the linkage of the lambdas used in test_Members.
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// CHECK-LABEL: define linkonce_odr i32 @_ZNK7Members1xMUlvE_clEv
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// CHECK: ret i32 1
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// CHECK-LABEL: define linkonce_odr i32 @_ZNK7Members1xMUlvE0_clEv
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// CHECK: ret i32 2
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// CHECK-LABEL: define linkonce_odr i32 @_ZNK7Members1yMUlvE_clEv
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// CHECK: ret i32 3
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// Check linkage of the various lambdas.
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// CHECK-LABEL: define linkonce_odr i32 @_ZZ11inline_funciENKUlvE_clEv
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// CHECK: ret i32 1
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// CHECK-LABEL: define linkonce_odr i32 @_ZZ11inline_funciENKUlvE0_clEv
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// CHECK: ret i32
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// CHECK-LABEL: define linkonce_odr double @_ZZ11inline_funciENKUlvE1_clEv
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// CHECK: ret double
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// CHECK-LABEL: define linkonce_odr i32 @_ZZ11inline_funciENKUliE_clEi
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// CHECK: ret i32
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// CHECK-LABEL: define linkonce_odr i32 @_ZZ11inline_funciENKUlvE2_clEv
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// CHECK: ret i32 17
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