1 //===- InstrProfilingRuntime.cpp - PGO runtime initialization -------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 extern "C" {
11 
12 #include "InstrProfiling.h"
13 
14 __attribute__((visibility("hidden"))) int __llvm_profile_runtime;
15 
16 }
17 
18 namespace {
19 
20 class RegisterRuntime {
21 public:
RegisterRuntime()22   RegisterRuntime() {
23     __llvm_profile_register_write_file_atexit();
24     __llvm_profile_initialize_file();
25   }
26 };
27 
28 RegisterRuntime Registration;
29 
30 }
31