contrib/llvm-project/compiler-rt/lib/profile/InstrProfilingRuntime.cpp

   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 }