clang/test/CodeGenCXX/default_calling_conv.cpp

   1 // RUN: %clang_cc1 -triple i386-unknown-linux-gnu -fdefault-calling-conv=cdecl -emit-llvm -o - %s | FileCheck %s --check-prefix=CDECL --check-prefix=ALL
   2 // RUN: %clang_cc1 -triple i786-unknown-linux-gnu -target-feature +sse4.2 -fdefault-calling-conv=fastcall -emit-llvm -o - %s | FileCheck %s --check-prefix=FASTCALL --check-prefix=ALL
   3 // RUN: %clang_cc1 -triple i486-unknown-linux-gnu -fdefault-calling-conv=stdcall -emit-llvm -o - %s | FileCheck %s --check-prefix=STDCALL --check-prefix=ALL
   4 // RUN: %clang_cc1 -triple i486-unknown-linux-gnu -mrtd -emit-llvm -o - %s | FileCheck %s --check-prefix=STDCALL --check-prefix=ALL
   5 // RUN: %clang_cc1 -triple i986-unknown-linux-gnu -fdefault-calling-conv=vectorcall -emit-llvm -o - %s | FileCheck %s --check-prefix=VECTORCALL --check-prefix=ALL
   6 // RUN: %clang_cc1 -triple i986-unknown-linux-gnu -fdefault-calling-conv=regcall -emit-llvm -o - %s | FileCheck %s --check-prefix=REGCALL --check-prefix=ALL
   7 // RUN: %clang_cc1 -triple i686-pc-win32 -fdefault-calling-conv=vectorcall -emit-llvm -o - %s -DWINDOWS | FileCheck %s --check-prefix=WIN32
   8 // RUN: %clang_cc1 -triple x86_64-windows-msvc -fdefault-calling-conv=vectorcall -emit-llvm -o - %s -DWINDOWS | FileCheck %s --check-prefix=WIN64
   9 // RUN: %clang_cc1 -triple i686-pc-win32 -emit-llvm -o - %s -DEXPLICITCC | FileCheck %s --check-prefix=EXPLICITCC
  10
  11 // CDECL: define{{.*}} void @_Z5test1v
  12 // FASTCALL: define{{.*}} x86_fastcallcc void @_Z5test1v
  13 // STDCALL: define{{.*}} x86_stdcallcc void @_Z5test1v
  14 // VECTORCALL: define{{.*}} x86_vectorcallcc void @_Z5test1v
  15 // REGCALL: define{{.*}} x86_regcallcc void @_Z17__regcall3__test1v
  16 void test1() {}
  17
  18 // fastcall, stdcall, vectorcall and regcall do not support variadic functions.
  19 // CDECL: define{{.*}} void @_Z12testVariadicz
  20 // FASTCALL: define{{.*}} void @_Z12testVariadicz
  21 // STDCALL: define{{.*}} void @_Z12testVariadicz
  22 // VECTORCALL: define{{.*}} void @_Z12testVariadicz
  23 // REGCALL: define{{.*}} void @_Z12testVariadicz
  24 void testVariadic(...){}
  25
  26 // ALL: define{{.*}} void @_Z5test2v
  27 void __attribute__((cdecl)) test2() {}
  28
  29 // ALL: define{{.*}} x86_fastcallcc void @_Z5test3v
  30 void __attribute__((fastcall)) test3() {}
  31
  32 // ALL: define{{.*}} x86_stdcallcc void @_Z5test4v
  33 void __attribute__((stdcall)) test4() {}
  34
  35 // ALL: define{{.*}} x86_vectorcallcc void @_Z5test5v
  36 void __attribute__((vectorcall)) test5() {}
  37
  38 // ALL: define{{.*}} x86_regcallcc void @_Z17__regcall3__test6v
  39 void __attribute__((regcall)) test6() {}
  40
  41 // ALL: define linkonce_odr void @_ZN1A11test_memberEv
  42 class A {
  43 public:
  44   void test_member() {}
  45 };
  46
  47 void test() {
  48   A a;
  49   a.test_member();
  50 }
  51
  52 // ALL: define{{.*}} i32 @main
  53 int main() {
  54   return 1;
  55 }
  56
  57 #ifdef WINDOWS
  58 // WIN32: define dso_local noundef i32 @wmain
  59 // WIN64: define dso_local noundef i32 @wmain
  60 int wmain() {
  61   return 1;
  62 }
  63 // WIN32: define dso_local x86_stdcallcc noundef i32 @WinMain
  64 // WIN64: define dso_local noundef i32 @WinMain
  65 int WinMain() {
  66   return 1;
  67 }
  68 // WIN32: define dso_local x86_stdcallcc noundef i32 @wWinMain
  69 // WIN64: define dso_local noundef i32 @wWinMain
  70 int wWinMain() {
  71   return 1;
  72 }
  73 // WIN32: define dso_local x86_stdcallcc noundef i32 @DllMain
  74 // WIN64: define dso_local noundef i32 @DllMain
  75 int DllMain() {
  76   return 1;
  77 }
  78 #endif // Windows
  79
  80 #ifdef EXPLICITCC
  81 // EXPLICITCC: define dso_local x86_fastcallcc noundef i32 @wmain
  82 int __fastcall wmain() {
  83   return 1;
  84 }
  85 // EXPLICITCC: define dso_local x86_fastcallcc noundef i32 @WinMain
  86 int __fastcall WinMain() {
  87   return 1;
  88 }
  89 // EXPLICITCC: define dso_local x86_fastcallcc noundef i32 @wWinMain
  90 int __fastcall wWinMain() {
  91   return 1;
  92 }
  93 // EXPLICITCC: define dso_local x86_fastcallcc noundef i32 @DllMain
  94 int __fastcall DllMain() {
  95   return 1;
  96 }
  97 #endif // ExplicitCC