clang/test/CodeGenCXX/lambda-conversion-op-cc.cpp

   1 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,LIN64
   2 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-linux-gnu -DCC="__attribute__((vectorcall))" | FileCheck %s --check-prefixes=CHECK,VECCALL
   3 // RUN: %clang_cc1 -emit-llvm %s -o - -fms-compatibility -triple=i386-windows-pc -DWIN32 | FileCheck %s --check-prefixes=WIN32
   4
   5 #ifndef CC
   6 #define CC
   7 #endif
   8
   9 void usage() {
  10   auto lambda = [](int i, float f, double d) CC { return i + f + d; };
  11
  12   double (*CC fp)(int, float, double) = lambda;
  13 #ifdef WIN32
  14   double (*__attribute__((thiscall)) fp2)(int, float, double) = lambda;
  15   double (*__attribute__((stdcall)) fp3)(int, float, double) = lambda;
  16   double (*__attribute__((fastcall)) fp4)(int, float, double) = lambda;
  17   double (*__attribute__((vectorcall)) fp5)(int, float, double) = lambda;
  18 #endif // WIN32
  19   fp(0, 1.1, 2.2);
  20 #ifdef WIN32
  21   fp2(0, 1.1, 2.2);
  22   fp3(0, 1.1, 2.2);
  23   fp4(0, 1.1, 2.2);
  24   fp5(0, 1.1, 2.2);
  25 #endif // WIN32
  26
  27   auto x = +lambda;
  28 }
  29
  30 // void usage function, calls conversion operator.
  31 // LIN64: define{{.*}} void @_Z5usagev()
  32 // VECCALL: define{{.*}} void @_Z5usagev()
  33 // WIN32: define dso_local void @"?usage@@YAXXZ"()
  34 // CHECK: call noundef double (i32, float, double)* @"_ZZ5usagevENK3$_0cvPFdifdEEv"
  35 // WIN32: call x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6A?A?<auto>@@HMN@ZXZ"
  36 // WIN32: call x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6E?A?<auto>@@HMN@ZXZ"
  37 // WIN32: call x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6G?A?<auto>@@HMN@ZXZ"
  38 // WIN32: call x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6I?A?<auto>@@HMN@ZXZ"
  39 // WIN32: call x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6Q?A?<auto>@@HMN@ZXZ"
  40 // Operator+ calls 'default' calling convention.
  41 // CHECK: call noundef double (i32, float, double)* @"_ZZ5usagevENK3$_0cvPFdifdEEv"
  42 // WIN32: call x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6A?A?<auto>@@HMN@ZXZ"
  43 //
  44 // Conversion operator, returns __invoke.
  45 // CHECK: define internal noundef double (i32, float, double)* @"_ZZ5usagevENK3$_0cvPFdifdEEv"
  46 // CHECK: ret double (i32, float, double)* @"_ZZ5usagevEN3$_08__invokeEifd"
  47 // WIN32: define internal x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6A?A?<auto>@@HMN@ZXZ"
  48 // WIN32: ret double (i32, float, double)* @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CA?A?<auto>@@HMN@Z"
  49 // WIN32: define internal x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6E?A?<auto>@@HMN@ZXZ"
  50 // WIN32: ret double (i32, float, double)* @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CE?A?<auto>@@HMN@Z"
  51 // WIN32: define internal x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6G?A?<auto>@@HMN@ZXZ"
  52 // WIN32: ret double (i32, float, double)* @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CG?A?<auto>@@HMN@Z"
  53 // WIN32: define internal x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6I?A?<auto>@@HMN@ZXZ"
  54 // WIN32: ret double (i32, float, double)* @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CI?A?<auto>@@HMN@Z"
  55 // WIN32: define internal x86_thiscallcc noundef double (i32, float, double)* @"??B<lambda_0>@?0??usage@@YAXXZ@QBEP6Q?A?<auto>@@HMN@ZXZ"
  56 // WIN32: ret double (i32, float, double)* @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CQ?A?<auto>@@HMN@Z"
  57 //
  58 // __invoke function, calls operator(). Win32 should call both.
  59 // LIN64: define internal noundef double @"_ZZ5usagevEN3$_08__invokeEifd"
  60 // LIN64: call noundef double @"_ZZ5usagevENK3$_0clEifd"
  61 // VECCALL: define internal x86_vectorcallcc noundef double @"_ZZ5usagevEN3$_08__invokeEifd"
  62 // VECCALL: call x86_vectorcallcc noundef double @"_ZZ5usagevENK3$_0clEifd"
  63 // WIN32: define internal noundef double @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CA?A?<auto>@@HMN@Z"
  64 // WIN32: call x86_thiscallcc noundef double @"??R<lambda_0>@?0??usage@@YAXXZ@QBE?A?<auto>@@HMN@Z"
  65 // WIN32: define internal x86_thiscallcc noundef double @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CE?A?<auto>@@HMN@Z"
  66 // WIN32: call x86_thiscallcc noundef double @"??R<lambda_0>@?0??usage@@YAXXZ@QBE?A?<auto>@@HMN@Z"
  67 // WIN32: define internal x86_stdcallcc noundef double @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CG?A?<auto>@@HMN@Z"
  68 // WIN32: call x86_thiscallcc noundef double @"??R<lambda_0>@?0??usage@@YAXXZ@QBE?A?<auto>@@HMN@Z"
  69 // WIN32: define internal x86_fastcallcc noundef double @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CI?A?<auto>@@HMN@Z"
  70 // WIN32: call x86_thiscallcc noundef double @"??R<lambda_0>@?0??usage@@YAXXZ@QBE?A?<auto>@@HMN@Z"
  71 // WIN32: define internal x86_vectorcallcc noundef double @"?__invoke@<lambda_0>@?0??usage@@YAXXZ@CQ?A?<auto>@@HMN@Z"
  72 // WIN32: call x86_thiscallcc noundef double @"??R<lambda_0>@?0??usage@@YAXXZ@QBE?A?<auto>@@HMN@Z"