clang/test/CodeGenCXX/cxx0x-initializer-stdinitializerlist-pr12086.cpp

// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-STATIC-BL
// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -emit-llvm -o - %s -Dconstexpr= | FileCheck %s --check-prefix=CHECK-DYNAMIC-BL
// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -emit-llvm -o - %s -DUSE_END | FileCheck %s --check-prefix=CHECK-STATIC-BE
// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -emit-llvm -o - %s -DUSE_END -Dconstexpr= | FileCheck %s --check-prefix=CHECK-DYNAMIC-BE

namespace std {
  typedef decltype(sizeof(int)) size_t;

  template <class _E>
  class initializer_list
  {
    const _E* __begin_;
#ifdef USE_END
    const _E* __end_;
#else
    size_t    __size_;
#endif

    constexpr initializer_list(const _E* __b, size_t __s)
      : __begin_(__b),
#ifdef USE_END
        __end_(__b + __s)
#else
        __size_(__s)
#endif
    {}

  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;

#ifdef USE_END
    constexpr initializer_list() : __begin_(nullptr), __end_(nullptr) {}

    size_t    size()  const {return __end_ - __begin_;}
    const _E* begin() const {return __begin_;}
    const _E* end()   const {return __end_;}
#else
    constexpr 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_;}
#endif
  };
}

constexpr int a = 2, b = 4, c = 6;
std::initializer_list<std::initializer_list<int>> nested = {
  {1, a}, {3, b}, {5, c}
};

// CHECK-STATIC-BL: @_ZGR6nested0_ = internal constant [2 x i32] [i32 1, i32 2], align 4
// CHECK-STATIC-BL: @_ZGR6nested1_ = internal constant [2 x i32] [i32 3, i32 4], align 4
// CHECK-STATIC-BL: @_ZGR6nested2_ = internal constant [2 x i32] [i32 5, i32 6], align 4
// CHECK-STATIC-BL: @_ZGR6nested_ = internal constant [3 x {{.*}}] [
// CHECK-STATIC-BL:   {{.*}} { ptr @_ZGR6nested0_, i64 2 },
// CHECK-STATIC-BL:   {{.*}} { ptr @_ZGR6nested1_, i64 2 },
// CHECK-STATIC-BL:   {{.*}} { ptr @_ZGR6nested2_, i64 2 }
// CHECK-STATIC-BL: ], align 8
// CHECK-STATIC-BL: @nested ={{.*}} global {{.*}} { {{.*}} @_ZGR6nested_, i64 3 }, align 8

// CHECK-DYNAMIC-BL: @nested ={{.*}} global
// CHECK-DYNAMIC-BL: @_ZGR6nested_ = internal global [3 x
// CHECK-DYNAMIC-BL: @_ZGR6nested0_ = internal global [2 x i32] zeroinitializer
// CHECK-DYNAMIC-BL: @_ZGR6nested1_ = internal global [2 x i32] zeroinitializer
// CHECK-DYNAMIC-BL: @_ZGR6nested2_ = internal global [2 x i32] zeroinitializer
// CHECK-DYNAMIC-BL: store i32 1, ptr @_ZGR6nested0_
// CHECK-DYNAMIC-BL: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested0_, i64 4)
// CHECK-DYNAMIC-BL: store ptr @_ZGR6nested0_,
// CHECK-DYNAMIC-BL:       ptr @_ZGR6nested_, align 8
// CHECK-DYNAMIC-BL: store i64 2, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 8), align 8
// CHECK-DYNAMIC-BL: store i32 3, ptr @_ZGR6nested1_
// CHECK-DYNAMIC-BL: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested1_, i64 4)
// CHECK-DYNAMIC-BL: store ptr @_ZGR6nested1_,
// CHECK-DYNAMIC-BL:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 16), align 8
// CHECK-DYNAMIC-BL: store i64 2, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 24), align 8
// CHECK-DYNAMIC-BL: store i32 5, ptr @_ZGR6nested2_
// CHECK-DYNAMIC-BL: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested2_, i64 4)
// CHECK-DYNAMIC-BL: store ptr @_ZGR6nested2_,
// CHECK-DYNAMIC-BL:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 32), align 8
// CHECK-DYNAMIC-BL: store i64 2, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 40), align 8
// CHECK-DYNAMIC-BL: store ptr @_ZGR6nested_,
// CHECK-DYNAMIC-BL:       ptr @nested, align 8
// CHECK-DYNAMIC-BL: store i64 3, ptr getelementptr inbounds nuw (i8, ptr @nested, i64 8), align 8

// CHECK-STATIC-BE: @_ZGR6nested0_ = internal constant [2 x i32] [i32 1, i32 2], align 4
// CHECK-STATIC-BE: @_ZGR6nested1_ = internal constant [2 x i32] [i32 3, i32 4], align 4
// CHECK-STATIC-BE: @_ZGR6nested2_ = internal constant [2 x i32] [i32 5, i32 6], align 4
// CHECK-STATIC-BE: @_ZGR6nested_ = internal constant [3 x {{.*}}] [
// CHECK-STATIC-BE:   {{.*}} { ptr @_ZGR6nested0_,
// CHECK-STATIC-BE:            ptr getelementptr (i8, ptr @_ZGR6nested0_, i64 8) }
// CHECK-STATIC-BE:   {{.*}} { ptr @_ZGR6nested1_,
// CHECK-STATIC-BE:            ptr getelementptr (i8, ptr @_ZGR6nested1_, i64 8) }
// CHECK-STATIC-BE:   {{.*}} { ptr @_ZGR6nested2_,
// CHECK-STATIC-BE:            ptr getelementptr (i8, ptr @_ZGR6nested2_, i64 8) }
// CHECK-STATIC-BE: ], align 8
// CHECK-STATIC-BE: @nested ={{.*}} global {{.*}} { ptr @_ZGR6nested_,
// CHECK-STATIC-BE:                           {{.*}} getelementptr (i8, ptr @_ZGR6nested_, i64 48) }

// CHECK-DYNAMIC-BE: @nested ={{.*}} global
// CHECK-DYNAMIC-BE: @_ZGR6nested_ = internal global [3 x
// CHECK-DYNAMIC-BE: @_ZGR6nested0_ = internal global [2 x i32] zeroinitializer
// CHECK-DYNAMIC-BE: @_ZGR6nested1_ = internal global [2 x i32] zeroinitializer
// CHECK-DYNAMIC-BE: @_ZGR6nested2_ = internal global [2 x i32] zeroinitializer
// CHECK-DYNAMIC-BE: store i32 1, ptr @_ZGR6nested0_
// CHECK-DYNAMIC-BE: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested0_, i64 4)
// CHECK-DYNAMIC-BE: store ptr @_ZGR6nested0_,
// CHECK-DYNAMIC-BE:       ptr @_ZGR6nested_, align 8
// CHECK-DYNAMIC-BE: store ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested0_, i64 8),
// CHECK-DYNAMIC-BE:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 8), align 8
// CHECK-DYNAMIC-BE: store i32 3, ptr @_ZGR6nested1_
// CHECK-DYNAMIC-BE: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested1_, i64 4)
// CHECK-DYNAMIC-BE: store ptr @_ZGR6nested1_,
// CHECK-DYNAMIC-BE:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 16), align 8
// CHECK-DYNAMIC-BE: store ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested1_, i64 8),
// CHECK-DYNAMIC-BE:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 24), align 8
// CHECK-DYNAMIC-BE: store i32 5, ptr @_ZGR6nested2_
// CHECK-DYNAMIC-BE: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested2_, i64 4)
// CHECK-DYNAMIC-BE: store ptr @_ZGR6nested2_,
// CHECK-DYNAMIC-BE:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 32), align 8
// CHECK-DYNAMIC-BE: store ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested2_, i64 8),
// CHECK-DYNAMIC-BE:       ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 40), align 8
// CHECK-DYNAMIC-BE: store ptr @_ZGR6nested_,
// CHECK-DYNAMIC-BE:       ptr @nested, align 8
// CHECK-DYNAMIC-BE: store ptr getelementptr inbounds nuw (i8, ptr @_ZGR6nested_, i64 48),
// CHECK-DYNAMIC-BE:       ptr getelementptr inbounds nuw (i8, ptr @nested, i64 8), align 8