clang/test/CodeGenCXX/no_destroy.cpp

   1 // RUN: %clang_cc1 %s -emit-llvm -triple x86_64-apple-macosx10.13.0 -o - | FileCheck %s --check-prefixes=CHECK,NO_EXCEPTIONS
   2 // RUN: %clang_cc1 -fexceptions %s -emit-llvm -triple x86_64-apple-macosx10.13.0 -o - | FileCheck %s --check-prefixes=CHECK,EXCEPTIONS
   3
   4 struct NonTrivial {
   5   ~NonTrivial();
   6 };
   7
   8 // CHECK-NOT: __cxa_atexit{{.*}}_ZN10NonTrivialD1Ev
   9 [[clang::no_destroy]] NonTrivial nt1;
  10 // CHECK-NOT: _tlv_atexit{{.*}}_ZN10NonTrivialD1Ev
  11 [[clang::no_destroy]] thread_local NonTrivial nt2;
  12
  13 struct NonTrivial2 {
  14   ~NonTrivial2();
  15 };
  16
  17 // CHECK: __cxa_atexit{{.*}}_ZN11NonTrivial2D1Ev{{.*}}nt21
  18 NonTrivial2 nt21;
  19 // CHECK: _tlv_atexit{{.*}}_ZN11NonTrivial2D1Ev{{.*}}nt22
  20 thread_local NonTrivial2 nt22;
  21
  22 // CHECK-LABEL: define{{.*}} void @_Z1fv
  23 void f() {
  24   // CHECK: __cxa_atexit{{.*}}_ZN11NonTrivial2D1Ev
  25   static NonTrivial2 nt21;
  26   // CHECK: _tlv_atexit{{.*}}_ZN11NonTrivial2D1Ev
  27   thread_local NonTrivial2 nt22;
  28 }
  29
  30 // CHECK-LABEL: define{{.*}} void @_Z1gv
  31 void g() {
  32   // CHECK-NOT: __cxa_atexit
  33   [[clang::no_destroy]] static NonTrivial2 nt21;
  34   // CHECK-NOT: _tlv_atexit
  35   [[clang::no_destroy]] thread_local NonTrivial2 nt22;
  36 }
  37
  38 // CHECK-LABEL: define internal void @__cxx_global_var_init
  39 // CHECK: __cxa_atexit{{.*}}_ZN10NonTrivialD1Ev
  40 [[clang::always_destroy]] NonTrivial nt3;
  41 // CHECK-LABEL: define internal void @__cxx_global_var_init
  42 // CHECK: _tlv_atexit{{.*}}_ZN10NonTrivialD1Ev
  43 [[clang::always_destroy]] thread_local NonTrivial nt4;
  44
  45
  46 struct NonTrivial3 {
  47   NonTrivial3();
  48   ~NonTrivial3();
  49 };
  50
  51 [[clang::no_destroy]] NonTrivial3 arr[10];
  52
  53 // CHECK-LABEL: define internal void @__cxx_global_var_init
  54 // CHECK: {{invoke|call}} void @_ZN11NonTrivial3C1Ev
  55 // EXCEPTIONS: call void @_ZN11NonTrivial3D1Ev
  56 // NO_EXCEPTIONS-NOT: call void @_ZN11NonTrivial3D1Ev
  57 // CHECK-NOT: call i32 @__cxa_atexit
  58
  59 void h() {
  60   [[clang::no_destroy]] static NonTrivial3 slarr[10];
  61 }
  62
  63 // CHECK-LABEL: define{{.*}} void @_Z1hv
  64 // CHECK: {{invoke|call}} void @_ZN11NonTrivial3C1Ev
  65 // EXCEPTIONS: call void @_ZN11NonTrivial3D1Ev
  66 // NO_EXCEPTIONS-NOT: call void @_ZN11NonTrivial3D1Ev
  67 // CHECK-NOT: call i32 @__cxa_atexit
  68
  69 void i() {
  70   [[clang::no_destroy]] thread_local NonTrivial3 tlarr[10];
  71 }
  72
  73 // CHECK-LABEL: define{{.*}} void @_Z1iv
  74 // CHECK: {{invoke|call}} void @_ZN11NonTrivial3C1Ev
  75 // EXCEPTIONS: call void @_ZN11NonTrivial3D1Ev
  76 // NO_EXCEPTIONS-NOT: call void @_ZN11NonTrivial3D1Ev
  77 // CHECK-NOT: _tlv_atexit