1 //===- InstrProfilingRuntime.cpp - PGO runtime initialization -------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 extern "C" {
10 
11 #include "InstrProfiling.h"
12 
13 /* int __llvm_profile_runtime  */
14 COMPILER_RT_VISIBILITY int INSTR_PROF_PROFILE_RUNTIME_VAR;
15 }
16 
17 namespace {
18 
19 class RegisterRuntime {
20 public:
21   RegisterRuntime() {
22     __llvm_profile_initialize_file();
23     if (!__llvm_profile_is_continuous_mode_enabled())
24       __llvm_profile_register_write_file_atexit();
25   }
26 };
27 
28 RegisterRuntime Registration;
29 
30 }
31