clang/test/CodeGenCXX/lambda-expressions-inside-auto-functions.cpp

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -fblocks -emit-llvm -o - %s -fexceptions -std=c++1y | FileCheck --check-prefix CHECK_ABI_LATEST %s
   2 // RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -fblocks -emit-llvm -o - %s -fexceptions -std=c++1y -fclang-abi-compat=6.0 | FileCheck --check-prefix CHECK_ABIV6 %s
   3
   4 // CHECK-LABEL: define void @_ZN19non_inline_function3fooEv
   5 // CHECK-LABEL: define internal void @"_ZZN19non_inline_function3fooEvENK3$_0clEi"(%class.anon
   6 // CHECK-LABEL: define internal signext i8 @"_ZZZN19non_inline_function3fooEvENK3$_0clEiENKUlcE_clEc"(%class.anon
   7 // CHECK-LABEL: define linkonce_odr void @_ZN19non_inline_function4foo2IiEEDav()
   8 namespace non_inline_function {
   9 auto foo() {
  10   auto L = [](int a) {
  11     return [](char b) {
  12      return b;
  13     };
  14   };
  15   L(3)('a');
  16   return L;
  17 }
  18
  19 template<typename T>
  20 auto foo2() {
  21   return [](const T&) { return 42; };
  22 }
  23
  24 auto use = foo2<int>();
  25
  26 }
  27 //CHECK-LABEL: define linkonce_odr void @_ZN22inline_member_function1X3fooEv(%"struct.inline_member_function::X"* %this)
  28 //CHECK-LABEL: define linkonce_odr void @_ZZN22inline_member_function1X3fooEvENKUliE_clEi(%class.anon
  29 //CHECK-LABEL: define linkonce_odr signext i8 @_ZZZN22inline_member_function1X3fooEvENKUliE_clEiENKUlcE_clEc(%class.anon
  30
  31 namespace inline_member_function {
  32 struct X {
  33 auto foo() {
  34   auto L = [](int a) {
  35     return [](char b) {
  36      return b;
  37     };
  38   };
  39   return L;
  40 }
  41 };
  42
  43 auto run1 = X{}.foo()(3)('a');
  44
  45 template<typename S>
  46 struct A {
  47   template<typename T> static auto default_lambda() {
  48     return [](const T&) { return 42; };
  49   }
  50
  51   template<class U = decltype(default_lambda<S>())>
  52     U func(U u = default_lambda<S>()) { return u; }
  53
  54   template<class T> auto foo() { return [](const T&) { return 42; }; }
  55 };
  56 //CHECK_ABIV6: define linkonce_odr noundef i32 @_ZZN22inline_member_function1AIdE14default_lambdaIdEEDavENKUlRKdE_clES5_(%class.anon
  57 //CHECK_ABI_LATEST: define linkonce_odr noundef i32 @_ZZN22inline_member_function1AIdE14default_lambdaIdEEDavENKUlRKdE_clES4_(%class.anon
  58 int run2 = A<double>{}.func()(3.14);
  59
  60 //CHECK_ABIV6: define linkonce_odr noundef i32 @_ZZN22inline_member_function1AIcE14default_lambdaIcEEDavENKUlRKcE_clES5_(%class.anon
  61 //CHECK_ABI_LATEST: define linkonce_odr noundef i32 @_ZZN22inline_member_function1AIcE14default_lambdaIcEEDavENKUlRKcE_clES4_(%class.anon
  62 int run3 = A<char>{}.func()('a');
  63 } // end inline_member_function
  64
  65
  66 // CHECK-LABEL: define linkonce_odr void @_ZN15inline_function3fooEv()
  67 // CHECK: define linkonce_odr void @_ZZN15inline_function3fooEvENKUliE_clEi(%class.anon
  68 // CHECK: define linkonce_odr signext i8 @_ZZZN15inline_function3fooEvENKUliE_clEiENKUlcE_clEc(%class.anon
  69 namespace inline_function {
  70 inline auto foo() {
  71   auto L = [](int a) {
  72     return [](char b) {
  73      return b;
  74     };
  75   };
  76   return L;
  77 }
  78 auto use = foo()(3)('a');
  79 }
  80