clang/test/CodeGenCXX/visibility-dllstorageclass.cpp

   1 // REQUIRES: x86-registered-target
   2
   3 //// Test that -fvisibility-from-dllstorageclass maps DLL storage class to visibility
   4 //// and that it overrides the effect of visibility options and annotations.
   5
   6 // RUN: %clang_cc1 -triple x86_64-unknown-windows-itanium -fdeclspec \
   7 // RUN:     -fvisibility=hidden \
   8 // RUN:     -fapply-global-visibility-to-externs \
   9 // RUN:     -fvisibility-from-dllstorageclass \
  10 // RUN:     -x c++ %s -emit-llvm -o - | \
  11 // RUN:   FileCheck %s --check-prefixes=DEFAULTS
  12
  13 // RUN: %clang_cc1 -triple x86_64-unknown-windows-itanium -fdeclspec \
  14 // RUN:     -fvisibility=hidden \
  15 // RUN:     -fapply-global-visibility-to-externs \
  16 // RUN:     -fvisibility-from-dllstorageclass \
  17 // RUN:     -fvisibility-dllexport=hidden \
  18 // RUN:     -fvisibility-nodllstorageclass=protected \
  19 // RUN:     -fvisibility-externs-dllimport=hidden \
  20 // RUN:     -fvisibility-externs-nodllstorageclass=protected \
  21 // RUN:     -x c++  %s -emit-llvm -o - | \
  22 // RUN:   FileCheck %s --check-prefixes=EXPLICIT
  23
  24 // RUN: %clang_cc1 -triple x86_64-unknown-windows-itanium -fdeclspec \
  25 // RUN:     -fvisibility=hidden \
  26 // RUN:     -fapply-global-visibility-to-externs \
  27 // RUN:     -fvisibility-from-dllstorageclass \
  28 // RUN:     -fvisibility-dllexport=default \
  29 // RUN:     -fvisibility-nodllstorageclass=default \
  30 // RUN:     -fvisibility-externs-dllimport=default \
  31 // RUN:     -fvisibility-externs-nodllstorageclass=default \
  32 // RUN:     -x c++  %s -emit-llvm -o - | \
  33 // RUN:   FileCheck %s --check-prefixes=ALL_DEFAULT
  34
  35 // RUN: %clang_cc1 -triple x86_64-unknown-windows-itanium -fdeclspec \
  36 // RUN:     -fvisibility=hidden \
  37 // RUN:     -fapply-global-visibility-to-externs \
  38 // RUN:     -fvisibility-from-dllstorageclass \
  39 // RUN:     -fvisibility-dllexport=keep \
  40 // RUN:     -fvisibility-nodllstorageclass=keep \
  41 // RUN:     -fvisibility-externs-dllimport=keep \
  42 // RUN:     -fvisibility-externs-nodllstorageclass=keep \
  43 // RUN:     -x c++  %s -emit-llvm -o - | \
  44 // RUN:   FileCheck %s --check-prefixes=ALL_KEEP
  45
  46 // Local
  47 static void l() {}
  48 void use_locals(){l();}
  49 // DEFAULTS-DAG: define internal void @_ZL1lv()
  50 // EXPLICIT-DAG: define internal void @_ZL1lv()
  51 // ALL_DEFAULT-DAG: define internal void @_ZL1lv()
  52 // ALL_KEEP-DAG: define internal void @_ZL1lv()
  53
  54 // Function
  55 void f() {}
  56 void __declspec(dllexport) exported_f() {}
  57 // DEFAULTS-DAG: define hidden void @_Z1fv()
  58 // DEFAULTS-DAG: define void @_Z10exported_fv()
  59 // EXPLICIT-DAG: define protected void @_Z1fv()
  60 // EXPLICIT-DAG: define hidden void @_Z10exported_fv()
  61 // ALL_DEFAULT-DAG: define void @_Z1fv()
  62 // ALL_DEFAULT-DAG: define void @_Z10exported_fv()
  63 // ALL_KEEP-DAG: define hidden void @_Z1fv()
  64 // ALL_KEEP-DAG: define hidden void @_Z10exported_fv()
  65
  66 // Variable
  67 int d = 123;
  68 __declspec(dllexport) int exported_d = 123;
  69 // DEFAULTS-DAG: @d = hidden global
  70 // DEFAULTS-DAG: @exported_d = global
  71 // EXPLICIT-DAG: @d = protected global
  72 // EXPLICIT-DAG: @exported_d = hidden global
  73 // ALL_DEFAULT-DAG: @d = global
  74 // ALL_DEFAULT-DAG: @exported_d = global
  75 // ALL_KEEP-DAG: @d = hidden global
  76 // ALL_KEEP-DAG: @exported_d = hidden global
  77
  78 // Alias
  79 extern "C" void aliased() {}
  80 void a() __attribute__((alias("aliased")));
  81 void __declspec(dllexport) a_exported() __attribute__((alias("aliased")));
  82 // DEFAULTS-DAG: @_Z1av = hidden alias
  83 // DEFAULTS-DAG: @_Z10a_exportedv = alias
  84 // EXPLICIT-DAG: @_Z1av = protected alias
  85 // EXPLICIT-DAG: @_Z10a_exportedv = hidden alias
  86 // ALL_DEFAULT-DAG: @_Z1av = alias
  87 // ALL_DEFAULT-DAG: @_Z10a_exportedv = alias
  88 // ALL_KEEP-DAG: @_Z1av = hidden alias
  89 // ALL_KEEP-DAG: @_Z10a_exportedv = dso_local alias
  90
  91 // Declaration
  92 extern void e();
  93 extern void __declspec(dllimport) imported_e();
  94 // DEFAULTS-DAG: declare hidden void @_Z1ev()
  95 // DEFAULTS-DAG: declare void @_Z10imported_ev()
  96 // EXPLICIT-DAG: declare protected void @_Z1ev()
  97 // EXPLICIT-DAG: declare hidden void @_Z10imported_ev()
  98 // ALL_DEFAULT-DAG: declare void @_Z1ev()
  99 // ALL_DEFAULT-DAG: declare void @_Z10imported_ev()
 100 // ALL_KEEP-DAG: declare hidden void @_Z1ev()
 101 // ALL_KEEP-DAG: declare void @_Z10imported_ev()
 102
 103 // Weak Declaration
 104 __attribute__((weak))
 105 extern void w();
 106 __attribute__((weak))
 107 extern void __declspec(dllimport) imported_w();
 108 // DEFAULTS-DAG: declare extern_weak hidden void @_Z1wv()
 109 // DEFAULTS-DAG: declare extern_weak void @_Z10imported_wv()
 110 // EXPLICIT-DAG: declare extern_weak protected void @_Z1wv()
 111 // EXPLICIT-DAG: declare extern_weak hidden void @_Z10imported_wv()
 112 // ALL_DEFAULT-DAG: declare extern_weak void @_Z1wv()
 113 // ALL_DEFAULT-DAG: declare extern_weak void @_Z10imported_wv()
 114 // ALL_KEEP-DAG: declare extern_weak hidden void @_Z1wv()
 115 // ALL_KEEP-DAG: declare extern_weak void @_Z10imported_wv()
 116
 117 void use_declarations(){e(); imported_e(); w(); imported_w();}
 118
 119 // Show that -fvisibility-from-dllstorageclass overrides the effect of visibility annotations.
 120
 121 struct __attribute__((type_visibility("protected"))) t {
 122   virtual void foo();
 123 };
 124 void t::foo() {}
 125 // DEFAULTS-DAG: @_ZTV1t = hidden unnamed_addr constant
 126 // ALL_KEEP-DAG: @_ZTV1t = protected unnamed_addr constant
 127
 128 int v __attribute__ ((__visibility__ ("protected"))) = 123;
 129 // DEFAULTS-DAG: @v = hidden global
 130 // ALL_KEEP-DAG: @v = protected global
 131
 132 #pragma GCC visibility push(protected)
 133 int p = 345;
 134 #pragma GCC visibility pop
 135 // DEFAULTS-DAG: @p = hidden global
 136 // ALL_KEEP-DAG: @p = protected global