test/CodeGen/visibility.c

   1 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -fvisibility default -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-DEFAULT
   2 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -fvisibility protected -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-PROTECTED
   3 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -fvisibility hidden -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-HIDDEN
   4
   5 // CHECK-DEFAULT: @g_def = global i32 0
   6 // CHECK-DEFAULT: @g_com = common global i32 0
   7 // CHECK-DEFAULT: @g_ext = external global i32
   8 // CHECK-DEFAULT: @g_deferred = internal global
   9 // CHECK-PROTECTED: @g_def = protected global i32 0
  10 // CHECK-PROTECTED: @g_com = common protected global i32 0
  11 // CHECK-PROTECTED: @g_ext = external global i32
  12 // CHECK-PROTECTED: @g_deferred = internal global
  13 // CHECK-HIDDEN: @g_def = hidden global i32 0
  14 // CHECK-HIDDEN: @g_com = common hidden global i32 0
  15 // CHECK-HIDDEN: @g_ext = external global i32
  16 // CHECK-HIDDEN: @g_deferred = internal global
  17 int g_com;
  18 int g_def = 0;
  19 extern int g_ext;
  20 static char g_deferred[] = "hello";
  21
  22 // CHECK-DEFAULT: @test4 = hidden global i32 10
  23 // CHECK-PROTECTED: @test4 = hidden global i32 10
  24 // CHECK-HIDDEN: @test4 = hidden global i32 10
  25
  26 // CHECK-DEFAULT: define i32 @f_def()
  27 // CHECK-DEFAULT: declare void @f_ext()
  28 // CHECK-DEFAULT: define internal void @f_deferred()
  29 // CHECK-PROTECTED: define protected i32 @f_def()
  30 // CHECK-PROTECTED: declare void @f_ext()
  31 // CHECK-PROTECTED: define internal void @f_deferred()
  32 // CHECK-HIDDEN: define hidden i32 @f_def()
  33 // CHECK-HIDDEN: declare void @f_ext()
  34 // CHECK-HIDDEN: define internal void @f_deferred()
  35
  36 extern void f_ext(void);
  37
  38 static void f_deferred(void) {
  39 }
  40
  41 int f_def(void) {
  42   f_ext();
  43   f_deferred();
  44   return g_com + g_def + g_ext + g_deferred[0];
  45 }
  46
  47 // PR8457
  48 // CHECK-DEFAULT: define void @test1(
  49 // CHECK-PROTECTED: define void @test1(
  50 // CHECK-HIDDEN: define void @test1(
  51 struct Test1 { int field; };
  52 void  __attribute__((visibility("default"))) test1(struct Test1 *v) { }
  53
  54 // rdar://problem/8595231
  55 // CHECK-DEFAULT: define void @test2()
  56 // CHECK-PROTECTED: define void @test2()
  57 // CHECK-HIDDEN: define void @test2()
  58 void test2(void);
  59 void __attribute__((visibility("default"))) test2(void) {}
  60
  61 // CHECK-DEFAULT: define hidden void @test3()
  62 // CHECK-PROTECTED: define hidden void @test3()
  63 // CHECK-HIDDEN: define hidden void @test3()
  64 extern void test3(void);
  65 __private_extern__ void test3(void) {}
  66
  67 // Top of file.
  68 extern int test4;
  69 __private_extern__ int test4 = 10;