clang/test/CodeGenCXX/internal-linkage.cpp

   1 // RUN: %clang_cc1 -emit-llvm -triple %itanium_abi_triple -o - %s | FileCheck %s
   2
   3 struct Global { Global(); };
   4 template<typename T> struct X { X() {} };
   5
   6
   7 namespace {
   8   struct Anon { Anon() {} };
   9
  10   // CHECK: @_ZN12_GLOBAL__N_15anon0E = internal global
  11   Global anon0;
  12 }
  13
  14 // CHECK: @anon1 = internal global
  15 Anon anon1;
  16
  17 // CHECK: @anon2 = internal global
  18 X<Anon> anon2;
  19
  20 char const * const xyzzy = "Hello, world!";
  21 extern char const * const xyzzy;
  22
  23 char const * const *test1()
  24 {
  25    // CHECK: @_ZL5xyzzy = internal constant
  26     return &xyzzy;
  27 }
  28
  29 static char const * const static_xyzzy = "Hello, world!";
  30 extern char const * const static_xyzzy;
  31
  32 char const * const *test2()
  33 {
  34     // CHECK: @_ZL12static_xyzzy = internal constant
  35     return &static_xyzzy;
  36 }
  37
  38 static char const * static_nonconst_xyzzy = "Hello, world!";
  39 extern char const * static_nonconst_xyzzy;
  40
  41 char const * *test3()
  42 {
  43     // CHECK: @_ZL21static_nonconst_xyzzy = internal global
  44     return &static_nonconst_xyzzy;
  45 }
  46
  47
  48 char const * extern_nonconst_xyzzy = "Hello, world!";
  49 extern char const * extern_nonconst_xyzzy;
  50
  51 char const * *test4()
  52 {
  53     // CHECK: @extern_nonconst_xyzzy = {{(dso_local )?}}global
  54     return &extern_nonconst_xyzzy;
  55 }
  56
  57 // PR10120
  58 template <typename T> class klass {
  59     virtual void f();
  60 };
  61 namespace { struct S; }
  62 void foo () { klass<S> x; }
  63 // CHECK: @_ZTV5klassIN12_GLOBAL__N_11SEE = internal unnamed_addr constant