clang/test/CodeGenCXX/dllexport-ctor-closure.cpp

   1 // RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c++14 \
   2 // RUN:    -fno-threadsafe-statics -fms-extensions -O1 -mconstructor-aliases \
   3 // RUN:    -disable-llvm-passes -o - %s -w -fms-compatibility-version=19.00 | \
   4 // RUN:    FileCheck %s
   5
   6 struct CtorWithClosure {
   7   __declspec(dllexport) CtorWithClosure(...) {}
   8 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FCtorWithClosure@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
   9 // CHECK:   %[[this_addr:.*]] = alloca ptr, align 4
  10 // CHECK:   store ptr %this, ptr %[[this_addr]], align 4
  11 // CHECK:   %[[this:.*]] = load ptr, ptr %[[this_addr]]
  12 // CHECK:   call noundef ptr (ptr, ...) @"??0CtorWithClosure@@QAA@ZZ"(ptr {{[^,]*}} %[[this]])
  13 // CHECK:   ret void
  14 };
  15
  16 struct CtorWithClosureOutOfLine {
  17   __declspec(dllexport) CtorWithClosureOutOfLine(...);
  18 };
  19 CtorWithClosureOutOfLine::CtorWithClosureOutOfLine(...) {}
  20 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FCtorWithClosureOutOfLine@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  21
  22 #define DELETE_IMPLICIT_MEMBERS(ClassName) \
  23     ClassName(ClassName &&) = delete; \
  24     ClassName(ClassName &) = delete; \
  25     ~ClassName() = delete; \
  26     ClassName &operator=(ClassName &) = delete
  27
  28 struct __declspec(dllexport) ClassWithClosure {
  29   DELETE_IMPLICIT_MEMBERS(ClassWithClosure);
  30   ClassWithClosure(...) {}
  31 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FClassWithClosure@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  32 // CHECK:   %[[this_addr:.*]] = alloca ptr, align 4
  33 // CHECK:   store ptr %this, ptr %[[this_addr]], align 4
  34 // CHECK:   %[[this:.*]] = load ptr, ptr %[[this_addr]]
  35 // CHECK:   call noundef ptr (ptr, ...) @"??0ClassWithClosure@@QAA@ZZ"(ptr {{[^,]*}} %[[this]])
  36 // CHECK:   ret void
  37 };
  38
  39 template <typename T> struct TemplateWithClosure {
  40   TemplateWithClosure(int x = sizeof(T)) {}
  41 };
  42 extern template struct TemplateWithClosure<char>;
  43 template struct __declspec(dllexport) TemplateWithClosure<char>;
  44 extern template struct TemplateWithClosure<int>;
  45 template struct __declspec(dllexport) TemplateWithClosure<int>;
  46
  47 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_F?$TemplateWithClosure@D@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  48 // CHECK:   call {{.*}} @"??0?$TemplateWithClosure@D@@QAE@H@Z"({{.*}}, i32 noundef 1)
  49
  50 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_F?$TemplateWithClosure@H@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  51 // CHECK:   call {{.*}} @"??0?$TemplateWithClosure@H@@QAE@H@Z"({{.*}}, i32 noundef 4)
  52
  53 template <typename T> struct __declspec(dllexport) ExportedTemplateWithClosure {
  54   ExportedTemplateWithClosure(int x = sizeof(T)) {}
  55 };
  56 template <> ExportedTemplateWithClosure<int>::ExportedTemplateWithClosure(int); // Don't try to emit the closure for a declaration.
  57 template <> ExportedTemplateWithClosure<int>::ExportedTemplateWithClosure(int) {};
  58 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_F?$ExportedTemplateWithClosure@H@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  59 // CHECK:   call {{.*}} @"??0?$ExportedTemplateWithClosure@H@@QAE@H@Z"({{.*}}, i32 noundef 4)
  60
  61 struct __declspec(dllexport) NestedOuter {
  62   DELETE_IMPLICIT_MEMBERS(NestedOuter);
  63   NestedOuter(void *p = 0) {}
  64   struct __declspec(dllexport) NestedInner {
  65     DELETE_IMPLICIT_MEMBERS(NestedInner);
  66     NestedInner(void *p = 0) {}
  67   };
  68 };
  69
  70 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FNestedOuter@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  71 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FNestedInner@NestedOuter@@QAEXXZ"({{.*}}) {{#[0-9]+}} comdat
  72
  73 struct HasDtor {
  74   ~HasDtor();
  75   int o;
  76 };
  77 struct HasImplicitDtor1 { HasDtor o; };
  78 struct HasImplicitDtor2 { HasDtor o; };
  79 struct __declspec(dllexport) CtorClosureInline {
  80   CtorClosureInline(const HasImplicitDtor1 &v = {}) {}
  81 };
  82 struct __declspec(dllexport) CtorClosureOutOfLine {
  83   CtorClosureOutOfLine(const HasImplicitDtor2 &v = {});
  84 };
  85 CtorClosureOutOfLine::CtorClosureOutOfLine(const HasImplicitDtor2 &v) {}
  86
  87 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FCtorClosureInline@@QAEXXZ"
  88 // CHECK-LABEL: define linkonce_odr dso_local x86_thiscallcc void @"??1HasImplicitDtor1@@QAE@XZ"
  89 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FCtorClosureOutOfLine@@QAEXXZ"
  90 // CHECK-LABEL: define linkonce_odr dso_local x86_thiscallcc void @"??1HasImplicitDtor2@@QAE@XZ"
  91
  92 struct SomeStruct {};
  93 constexpr SomeStruct kConstexprStruct;
  94 struct __declspec(dllexport) ConstexprDefaultArg {
  95   ConstexprDefaultArg(SomeStruct = kConstexprStruct) {}
  96 };
  97 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc void @"??_FConstexprDefaultArg@@QAEXXZ"