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      1 // RUN: %clang_cc1 -std=c++11 -S -triple x86_64-none-linux-gnu -emit-llvm -o - %s | FileCheck %s
      2 
      3 namespace std {
      4   typedef decltype(sizeof(int)) size_t;
      5 
      6   // libc++'s implementation with __size_ replaced by __end_
      7   template <class _E>
      8   class initializer_list
      9   {
     10     const _E* __begin_;
     11     const _E* __end_;
     12 
     13     initializer_list(const _E* __b, const _E* __e)
     14       : __begin_(__b),
     15         __end_(__e)
     16     {}
     17 
     18   public:
     19     typedef _E        value_type;
     20     typedef const _E& reference;
     21     typedef const _E& const_reference;
     22     typedef size_t    size_type;
     23 
     24     typedef const _E* iterator;
     25     typedef const _E* const_iterator;
     26 
     27     initializer_list() : __begin_(nullptr), __end_(nullptr) {}
     28 
     29     size_t    size()  const {return __end_ - __begin_;}
     30     const _E* begin() const {return __begin_;}
     31     const _E* end()   const {return __end_;}
     32   };
     33 }
     34 
     35 // CHECK: @_ZGR15globalInitList1 = private constant [3 x i32] [i32 1, i32 2, i32 3]
     36 // CHECK: @globalInitList1 = global {{[^ ]+}} { i32* getelementptr inbounds ([3 x i32]* @_ZGR15globalInitList1, {{[^)]*}}), i32*
     37 std::initializer_list<int> globalInitList1 = {1, 2, 3};
     38 
     39 void fn1(int i) {
     40   // CHECK: define void @_Z3fn1i
     41   // temporary array
     42   // CHECK: [[array:%[^ ]+]] = alloca [3 x i32]
     43   // CHECK: getelementptr inbounds [3 x i32]* [[array]], i{{32|64}} 0
     44   // CHECK-NEXT: store i32 1, i32*
     45   // CHECK-NEXT: getelementptr
     46   // CHECK-NEXT: store
     47   // CHECK-NEXT: getelementptr
     48   // CHECK-NEXT: load
     49   // CHECK-NEXT: store
     50   // init the list
     51   // CHECK-NEXT: getelementptr
     52   // CHECK-NEXT: getelementptr inbounds [3 x i32]*
     53   // CHECK-NEXT: store i32*
     54   // CHECK-NEXT: getelementptr
     55   // CHECK-NEXT: getelementptr inbounds [3 x i32]* [[array]], i{{32|64}} 0, i{{32|64}} 3
     56   // CHECK-NEXT: store i32*
     57   std::initializer_list<int> intlist{1, 2, i};
     58 }
     59 
     60 struct destroyme1 {
     61   ~destroyme1();
     62 };
     63 struct destroyme2 {
     64   ~destroyme2();
     65 };
     66 
     67 
     68 void fn2() {
     69   // CHECK: define void @_Z3fn2v
     70   void target(std::initializer_list<destroyme1>);
     71   // objects should be destroyed before dm2, after call returns
     72   target({ destroyme1(), destroyme1() });
     73   // CHECK: call void @_ZN10destroyme1D1Ev
     74   destroyme2 dm2;
     75   // CHECK: call void @_ZN10destroyme2D1Ev
     76 }
     77 
     78 void fn3() {
     79   // CHECK: define void @_Z3fn3v
     80   // objects should be destroyed after dm2
     81   auto list = { destroyme1(), destroyme1() };
     82   destroyme2 dm2;
     83   // CHECK: call void @_ZN10destroyme2D1Ev
     84   // CHECK: call void @_ZN10destroyme1D1Ev
     85 }
     86