clang/test/CodeGenCXX/lambda-expressions-nested-linkage.cpp

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -fblocks -emit-llvm -o - %s -fexceptions -std=c++11 | FileCheck %s
   2 // RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -fblocks -emit-llvm -o - %s -fexceptions -std=c++14 | FileCheck --check-prefixes=CHECK,CXX14 %s
   3
   4 // CHECK-LABEL: define{{.*}} void @_ZN19non_inline_function3fooEv()
   5 // CHECK-LABEL: define internal void @"_ZZN19non_inline_function3fooEvENK3$_0clEi"(%class.anon
   6 // CHECK-LABEL: define internal noundef signext i8 @"_ZZZN19non_inline_function3fooEvENK3$_0clEiENKUlcE_clEc"(%class.anon
   7 namespace non_inline_function {
   8 void foo() {
   9   auto L = [](int a) {
  10     return [](char b) {
  11      return b;
  12     };
  13   };
  14   L(3)('a');
  15 }
  16 }
  17
  18 namespace non_template {
  19   struct L {
  20     int t = ([](int a) { return [](int b) { return b; };})(2)(3);
  21   };
  22   L l;
  23 }
  24
  25 // It's important that this is not in a namespace; we're testing the mangling
  26 // of lambdas in top-level inline variables here.
  27 inline auto lambda_in_inline_variable = [] {};
  28 template<typename T> struct Wrap {};
  29 // CHECK-LABEL: define {{.*}} @_Z30test_lambda_in_inline_variable4WrapIN25lambda_in_inline_variableMUlvE_EE
  30 void test_lambda_in_inline_variable(Wrap<decltype(lambda_in_inline_variable)>) {}
  31
  32 namespace lambdas_in_NSDMIs_template_class {
  33 template<class T>
  34 struct L {
  35     T t2 = ([](int a) { return [](int b) { return b; };})(T{})(T{});
  36 };
  37 L<int> l;
  38 }
  39
  40 // CHECK-LABEL: define linkonce_odr noundef i32 @_ZN15inline_function3fooEv
  41
  42 // CHECK-LABEL: define linkonce_odr void @_ZNK12non_template1L1tMUliE_clEi(%class.anon
  43 // CHECK-LABEL: define linkonce_odr noundef i32 @_ZZNK12non_template1L1tMUliE_clEiENKUliE_clEi(%class.anon
  44
  45
  46 // CHECK-LABEL: define linkonce_odr void @_ZNK32lambdas_in_NSDMIs_template_class1LIiEUliE_clEi(%class.anon
  47 // CHECK-LABEL: define linkonce_odr noundef i32 @_ZZNK32lambdas_in_NSDMIs_template_class1LIiEUliE_clEiENKUliE_clEi(%class.anon
  48
  49 // CHECK-LABEL: define linkonce_odr void @_ZZN15inline_function3fooEvENKUliE_clEi
  50 // CHECK-LABEL: define linkonce_odr noundef signext i8 @_ZZZN15inline_function3fooEvENKUliE_clEiENKUlcE_clEc
  51 namespace inline_function {
  52 inline int foo() {
  53   auto L = [](int a) {
  54     return [](char b) {
  55      return b;
  56     };
  57   };
  58   L(3)('a');
  59 }
  60 int use = foo();
  61 }
  62
  63 #if __cplusplus >= 201402L
  64 // CXX14-LABEL: define internal void @"_ZZZN32lambda_capture_in_generic_lambda3fooIiEEDavENKUlT_E_clIZNS_L1fEvE3$_1EEDaS1_ENKUlvE_clEv"
  65 namespace lambda_capture_in_generic_lambda {
  66 template <typename T> auto foo() {
  67   return [](auto func) {
  68     [func] { func(); }();
  69   };
  70 }
  71 static void f() {
  72   foo<int>()([] { });
  73 }
  74 void f1() { f(); }
  75 }
  76 #endif