1 files changed, 193 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/mangle-exprs.cpp b/clang/test/CodeGenCXX/mangle-exprs.cpp
new file mode 100644
index 0000000..30da4fb
--- /dev/null
+++ b/clang/test/CodeGenCXX/mangle-exprs.cpp
@@ -0,0 +1,193 @@
+// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s
+
+namespace std {
+  typedef decltype(sizeof(int)) size_t;
+
+  // libc++'s implementation
+  template <class _E>
+  class initializer_list
+  {
+    const _E* __begin_;
+    size_t    __size_;
+
+    initializer_list(const _E* __b, size_t __s)
+      : __begin_(__b),
+        __size_(__s)
+    {}
+
+  public:
+    typedef _E        value_type;
+    typedef const _E& reference;
+    typedef const _E& const_reference;
+    typedef size_t    size_type;
+
+    typedef const _E* iterator;
+    typedef const _E* const_iterator;
+
+    initializer_list() : __begin_(nullptr), __size_(0) {}
+
+    size_t    size()  const {return __size_;}
+    const _E* begin() const {return __begin_;}
+    const _E* end()   const {return __begin_ + __size_;}
+  };
+}
+
+template < bool condition, typename T = void >
+struct enable_if { typedef T type; };
+
+template< typename T >
+struct enable_if< false, T > {};
+
+// PR5876
+namespace Casts {
+  template< unsigned O >
+  void implicit(typename enable_if< O <= 4 >::type* = 0) {
+  }
+  
+  template< unsigned O >
+  void cstyle(typename enable_if< O <= (unsigned)4 >::type* = 0) {
+  }
+
+  template< unsigned O >
+  void functional(typename enable_if< O <= unsigned(4) >::type* = 0) {
+  }
+  
+  template< unsigned O >
+  void static_(typename enable_if< O <= static_cast<unsigned>(4) >::type* = 0) {
+  }
+
+  template< typename T >
+  void auto_(decltype(new auto(T()))) {
+  }
+
+  template< typename T >
+  void scalar_(decltype(T(), int())) {
+  }
+
+  // FIXME: Test const_cast, reinterpret_cast, dynamic_cast, which are
+  // a bit harder to use in template arguments.
+  template <unsigned N> struct T {};
+
+  template <int N> T<N> f() { return T<N>(); }
+  
+  // CHECK: define weak_odr void @_ZN5Casts8implicitILj4EEEvPN9enable_ifIXleT_Li4EEvE4typeE
+  template void implicit<4>(void*);
+  // CHECK: define weak_odr void @_ZN5Casts6cstyleILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE
+  template void cstyle<4>(void*);
+  // CHECK: define weak_odr void @_ZN5Casts10functionalILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE
+  template void functional<4>(void*);
+  // CHECK: define weak_odr void @_ZN5Casts7static_ILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE
+  template void static_<4>(void*);
+
+  // CHECK: define weak_odr void @_ZN5Casts1fILi6EEENS_1TIXT_EEEv
+  template T<6> f<6>();
+
+  // CHECK: define weak_odr void @_ZN5Casts5auto_IiEEvDTnw_DapicvT__EEE(
+  template void auto_<int>(int*);
+
+  // CHECK: define weak_odr void @_ZN5Casts7scalar_IiEEvDTcmcvT__Ecvi_EE(
+  template void scalar_<int>(int);
+}
+
+namespace test1 {
+  short foo(short);
+  int foo(int);
+
+  // CHECK: define linkonce_odr signext i16 @_ZN5test11aIsEEDTcl3foocvT__EEES1_(
+  template <class T> auto a(T t) -> decltype(foo(T())) { return foo(t); }
+
+  // CHECK: define linkonce_odr signext i16 @_ZN5test11bIsEEDTcp3foocvT__EEES1_(
+  template <class T> auto b(T t) -> decltype((foo)(T())) { return (foo)(t); }
+
+  void test(short s) {
+    a(s);
+    b(s);
+  }
+}
+
+namespace test2 {
+  template <class T> void a(T x, decltype(x()) y) {}
+  template <class T> auto b(T x) -> decltype(x()) { return x(); }
+  template <class T> void c(T x, void (*p)(decltype(x()))) {}
+  template <class T> void d(T x, auto (*p)() -> decltype(x())) {}
+  template <class T> void e(auto (*p)(T y) -> decltype(y())) {}
+  template <class T> void f(void (*p)(T x, decltype(x()) y)) {}
+  template <class T> void g(T x, decltype(x()) y) {
+    static decltype(x()) variable;
+    variable = 0;
+  }
+  template <class T> void h(T x, decltype((decltype(x())(*)()) 0) y) {}
+  template <class T> void i(decltype((auto (*)(T x) -> decltype(x())) 0) y) {}
+
+  float foo();
+  void bar(float);
+  float baz(float(*)());
+  void fred(float(*)(), float);
+
+  // CHECK: define void @_ZN5test211instantiateEv
+  void instantiate() {
+    // CHECK: call void @_ZN5test21aIPFfvEEEvT_DTclfL0p_EE(
+    a(foo, 0.0f);
+    // CHECK: call float @_ZN5test21bIPFfvEEEDTclfp_EET_(
+    (void) b(foo);
+    // CHECK: call void @_ZN5test21cIPFfvEEEvT_PFvDTclfL1p_EEE(
+    c(foo, bar);
+    // CHECK: call void @_ZN5test21dIPFfvEEEvT_PFDTclfL0p_EEvE(
+    d(foo, foo);
+    // CHECK: call void @_ZN5test21eIPFfvEEEvPFDTclfp_EET_E(
+    e(baz);
+    // CHECK: call void @_ZN5test21fIPFfvEEEvPFvT_DTclfL0p_EEE(
+    f(fred);
+    // CHECK: call void @_ZN5test21gIPFfvEEEvT_DTclfL0p_EE(
+    g(foo, 0.0f);
+    // CHECK: call void @_ZN5test21hIPFfvEEEvT_DTcvPFDTclfL0p_EEvELi0EE(
+    h(foo, foo);
+    // CHECK: call void @_ZN5test21iIPFfvEEEvDTcvPFDTclfp_EET_ELi0EE(
+    i<float(*)()>(baz);
+  }
+
+  // CHECK: store float {{.*}}, float* @_ZZN5test21gIPFfvEEEvT_DTclfL0p_EEE8variable,
+}
+
+namespace test3 {
+  template <class T, class U> void a(T x, U y, decltype(x.*y) z) {}  
+
+  struct X {
+    int *member;
+  };
+
+  // CHECK: define void @_ZN5test311instantiateEv
+  void instantiate() {
+    X x;
+    int *ip;
+    // CHECK: call void @_ZN5test31aINS_1XEMS1_PiEEvT_T0_DTdsfL0p_fL0p0_E
+    a(x, &X::member, ip);
+  }
+}
+
+namespace test4 {
+  struct X {
+    X(int);
+  };
+
+  template <typename T>
+  void tf1(decltype(new T(1)) p)
+  {}
+
+  template <typename T>
+  void tf2(decltype(new T({1})) p)
+  {}
+
+  template <typename T>
+  void tf3(decltype(new T{1}) p)
+  {}
+
+  // CHECK: void @_ZN5test43tf1INS_1XEEEvDTnw_T_piLi1EEE
+  template void tf1<X>(X*);
+
+  // CHECK: void @_ZN5test43tf2INS_1XEEEvDTnw_T_piilLi1EEEE
+  template void tf2<X>(X*);
+
+  // CHECK: void @_ZN5test43tf3INS_1XEEEvDTnw_T_ilLi1EEE
+  template void tf3<X>(X*);
+}