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_ = internal constant [3 x i32] [i32 1, i32 2, i32 3] 36 // CHECK: @globalInitList1 = global {{[^ ]+}} { i32* getelementptr inbounds ([3 x i32], [3 x i32]* @_ZGR15globalInitList1_, {{[^)]*}}), i32* 37 std::initializer_list<int> globalInitList1 = {1, 2, 3}; 38 39 void fn1(int i) { 40 // CHECK-LABEL: define void @_Z3fn1i 41 // temporary array 42 // CHECK: [[array:%[^ ]+]] = alloca [3 x i32] 43 // CHECK: getelementptr inbounds [3 x i32], [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], [3 x i32]* 53 // CHECK-NEXT: store i32* 54 // CHECK-NEXT: getelementptr 55 // CHECK-NEXT: getelementptr inbounds [3 x i32], [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-LABEL: 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-LABEL: 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
