clang/test/CodeGenCXX/builtin_FUNCTION.cpp

   1 // RUN: %clang_cc1 -std=c++2a -fblocks %s -triple %itanium_abi_triple -emit-llvm -o %t.ll
   2 // RUN: FileCheck --input-file %t.ll %s
   3
   4 namespace test_func {
   5
   6 constexpr const char *test_default_arg(const char *f = __builtin_FUNCTION()) {
   7   return f;
   8 }
   9 // CHECK: @[[EMPTY_STR:.+]] = private unnamed_addr constant [1 x i8] zeroinitializer
  10
  11 // CHECK: @_ZN9test_func6globalE = {{(dso_local )?}}global ptr @[[EMPTY_STR]]
  12 const char *global = test_default_arg();
  13
  14 // CHECK: @_ZN9test_func10global_twoE = {{(dso_local )?}}global ptr @[[EMPTY_STR]]
  15 const char *global_two = __builtin_FUNCTION();
  16
  17 const char * const global_three = test_default_arg();
  18
  19 // CHECK: @[[STR_ONE:.+]] = private unnamed_addr constant [14 x i8] c"test_func_one\00"
  20 // CHECK: @[[STR_TWO:.+]] = private unnamed_addr constant [14 x i8] c"test_func_two\00"
  21 // CHECK: @[[STR_THREE:.+]] = private unnamed_addr constant [20 x i8] c"do_default_arg_test\00"
  22
  23 // CHECK: define {{(dso_local )?}}noundef ptr @_ZN9test_func13test_func_oneEv()
  24 // CHECK: ret ptr @[[STR_ONE]]
  25 const char *test_func_one() {
  26   return __builtin_FUNCTION();
  27 }
  28
  29 // CHECK: define {{(dso_local )?}}noundef ptr @_ZN9test_func13test_func_twoEv()
  30 // CHECK: ret ptr @[[STR_TWO]]
  31 const char *test_func_two() {
  32   return __builtin_FUNCTION();
  33 }
  34
  35 // CHECK: define {{(dso_local )?}}void @_ZN9test_func19do_default_arg_testEv()
  36 // CHECK: %call = call noundef ptr @_ZN9test_func16test_default_argEPKc(ptr noundef @[[STR_THREE]])
  37 void do_default_arg_test() {
  38   test_default_arg();
  39 }
  40
  41 } // namespace test_func