clang/test/CodeGenCXX/tls-init-funcs.cpp

   1 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.8 -std=c++1y -S -emit-llvm %s -o - | FileCheck %s
   2 // RUN: %clang_cc1 -triple x86_64-windows-gnu -std=c++1y -S -emit-llvm %s -o - | FileCheck %s --check-prefix=MINGW
   3
   4 // CHECK: @a = internal thread_local global
   5 // CHECK: @_Z2vtIiE = linkonce_odr thread_local global i32 5
   6 // CHECK: @_ZZ3inlvE3loc = linkonce_odr thread_local global i32 0
   7 // CHECK: @_tlv_atexit({{.*}}@_ZN1AD1Ev
   8 // CHECK: call cxx_fast_tlscc i32* @_ZTW3ext()
   9 // CHECK: declare cxx_fast_tlscc noundef i32* @_ZTW3ext()
  10 // CHECK-DAG: define weak_odr hidden cxx_fast_tlscc noundef i32* @_ZTW2vtIiE()
  11 // CHECK-DAG: define weak_odr hidden cxx_fast_tlscc noundef i32* @_ZTW2vtIvE()
  12 // CHECK-DAG: define {{.*}} @_ZTW1a
  13
  14 // MINGW-DAG: define weak_odr hidden noundef i32* @_ZTW2vtIiE() {{.*}} comdat
  15 // MINGW-DAG: define weak_odr hidden noundef i32* @_ZTW2vtIvE() {{.*}} comdat
  16
  17 struct A {
  18   ~A();
  19 };
  20
  21 thread_local A a;
  22
  23 extern thread_local int ext;
  24 int &get_ext() { return ext; }
  25
  26 template <typename T>
  27 thread_local int vt = 5;
  28
  29 int get_vt() { return vt<int>; }
  30
  31 inline int &inl() {
  32   thread_local int loc;
  33   return loc;
  34 }
  35 int &use_inl() { return inl(); }
  36
  37 template int vt<void>;
  38 int &get_vt_void() { return vt<void>; }